/* ==========================================================================
   STUDBUD - MAIN STYLESHEET
   ========================================================================== */

/* --- CSS VARIABLES & THEME SETUP --- */
:root {
    /* Fonts */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'Fira Code', 'Courier New', Courier, monospace;

    /* Sizing & Spacing */
    --sidebar-width: 256px;
    --header-height: 62px;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 20px;
    --spacing-xl: 26px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-Indexes */
    --z-base: 1;
    --z-header: 10;
    --z-sidebar: 20;
    --z-drawer: 30;
    --z-modal-overlay: 100;
    --z-modal: 101;
    --z-tooltip: 200;
}
.header-left { min-width: 0; }
.header-left h1 { overflow-wrap: anywhere; }

.daily-study-card { display: grid; gap: 12px; }
.daily-study-topline, .daily-study-footer, .study-leaderboard-heading { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.daily-study-topline h3 { margin-bottom: 4px; }
.daily-study-streak { flex: 0 0 auto; padding: 8px 12px; border: 1px solid color-mix(in srgb, var(--status-warning) 40%, transparent); border-radius: 999px; color: var(--status-warning); font-weight: 800; background: color-mix(in srgb, var(--status-warning) 10%, transparent); }
.daily-study-stats { display: flex; align-items: baseline; gap: 8px; color: var(--text-secondary); }
.daily-study-stats strong { color: var(--accent-primary); font-size: 1.5rem; font-variant-numeric: tabular-nums; }
.daily-study-progress { display: block; width: 100%; height: 14px; overflow: hidden; border: 0; border-radius: 999px; accent-color: var(--accent-primary); background: var(--bg-glass-hover); }
.daily-study-progress::-webkit-progress-bar { border-radius: 999px; background: var(--bg-glass-hover); }
.daily-study-progress::-webkit-progress-value { border-radius: 999px; background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary)); transition: width .3s ease; }
.daily-study-progress::-moz-progress-bar { border-radius: 999px; background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary)); }
.daily-study-footer p { color: var(--text-secondary); font-size: .9rem; }
.study-leaderboard-panel { margin-top: var(--spacing-lg); }
.study-leaderboard-tabs { display: flex; gap: 6px; }
.study-leaderboard-tabs .selected { border-color: var(--accent-primary); color: var(--accent-primary); }
.study-leaderboard-list { display: grid; gap: 8px; list-style: none; margin-top: var(--spacing-md); }
.study-leaderboard-row { display: grid; grid-template-columns: 40px 38px minmax(0, 1fr) auto auto; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass); transition: transform .15s ease, background .15s ease; }
.study-leaderboard-row:hover { transform: translateX(3px); background: var(--bg-glass-hover); }
.study-leaderboard-row.is-self { border-color: color-mix(in srgb, var(--accent-primary) 60%, var(--border-glass)); background: color-mix(in srgb, var(--accent-primary) 10%, var(--bg-glass)); box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent-primary) 25%, transparent); }
.study-leaderboard-row.podium-1 { border-color: #f5c542; background: linear-gradient(90deg, rgba(245,197,66,.16), var(--bg-glass)); }
.study-leaderboard-row.podium-2 { border-color: #b8c2cc; background: linear-gradient(90deg, rgba(184,194,204,.14), var(--bg-glass)); }
.study-leaderboard-row.podium-3 { border-color: #cd8a4b; background: linear-gradient(90deg, rgba(205,138,75,.14), var(--bg-glass)); }
.study-leaderboard-rank { color: var(--accent-primary); font-size: 1.15rem; font-weight: 800; text-align: center; }
.study-leaderboard-avatar { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; color: #fff; font-weight: 800; background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)); }
.study-leaderboard-row .study-leaderboard-avatar, .podium-spot .study-leaderboard-avatar { width: 36px; height: 36px; }
.study-leaderboard-main { display: grid; gap: 6px; min-width: 0; }
.study-leaderboard-main strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.you-badge { padding: 1px 7px; border-radius: 999px; color: var(--accent-on-primary); font-size: .68rem; font-style: normal; font-weight: 700; background: var(--accent-primary); vertical-align: middle; }
.account-tag { display: inline-flex; align-items: center; flex: 0 0 auto; gap: 3px; padding: 2px 7px; border: 1px solid var(--border-glass); border-radius: 999px; font-size: .65rem; font-weight: 750; line-height: 1.25; white-space: nowrap; vertical-align: middle; background: var(--bg-glass-hover); color: var(--text-primary); }
.account-tag-owner { border-color: var(--accent-primary); color: var(--accent-primary); }
.account-tag-co-owner { border-color: var(--text-secondary); color: var(--text-secondary); }
.announcement-history { display: grid; gap: 12px; list-style: none; padding: 0; margin: 12px 0 0; }
.announcement-history li { min-width: 0; padding: 12px; border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); }
.announcement-history time { color: var(--text-secondary); font-size: .8rem; }
.announcement-history li > small, .site-notice small { display: block; margin-top: 4px; color: var(--text-secondary); }
.announcement-history p { white-space: pre-wrap; overflow-wrap: anywhere; margin: 8px 0 0; }
#site-notice-status:empty { display: none; }
.study-leaderboard-bar { display: block; height: 6px; overflow: hidden; border-radius: 999px; background: var(--bg-glass-hover); }
.study-leaderboard-bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary)); }
.study-leaderboard-time { color: var(--text-secondary); font-weight: 700; font-variant-numeric: tabular-nums; }
.study-podium { display: flex; justify-content: center; align-items: flex-end; gap: 10px; padding: 8px 0 12px; }
.podium-spot { display: grid; justify-items: center; gap: 4px; flex: 1; max-width: 160px; min-width: 0; text-align: center; }
.podium-spot b { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.podium-spot small { color: var(--text-secondary); }
.podium-medal { font-size: 1.6rem; }
.podium-block { width: 100%; border-radius: 10px 10px 0 0; background: linear-gradient(180deg, var(--accent-primary), color-mix(in srgb, var(--accent-primary) 30%, transparent)); }
.podium-spot-1 .podium-block { height: 64px; background: linear-gradient(180deg, #f5c542, rgba(245,197,66,.2)); }
.podium-spot-2 .podium-block { height: 44px; background: linear-gradient(180deg, #b8c2cc, rgba(184,194,204,.2)); }
.podium-spot-3 .podium-block { height: 30px; background: linear-gradient(180deg, #cd8a4b, rgba(205,138,75,.2)); }

/* DARK THEME (Default) */
.dark-theme {
    color-scheme: dark;
    /* Colors */
    --bg-base: #101a17;
    --bg-glass: rgba(28, 43, 37, 0.88);
    --bg-glass-hover: rgba(44, 63, 55, 0.92);
    --border-glass: rgba(204, 245, 220, 0.11);
    
    --text-primary: #f0f7f2;
    --text-secondary: #afc3b7;
    --text-muted: #92a99c;
    
    --accent-primary: #55c995;
    --accent-primary-hover: #37af79;
    --accent-secondary: #b6a0ff;
    --accent-on-primary: #10271c;
    
    --status-success: #10b981; /* Emerald 500 */
    --status-warning: #f59e0b; /* Amber 500 */
    --status-danger: #ef4444; /* Red 500 */
    --status-info: #0ea5e9; /* Sky 500 */

    /* Eisenhower Matrix Colors (Dark) */
    --quad-1-bg: rgba(239, 68, 68, 0.15);
    --quad-1-border: rgba(239, 68, 68, 0.3);
    --quad-2-bg: rgba(16, 185, 129, 0.15);
    --quad-2-border: rgba(16, 185, 129, 0.3);
    --quad-3-bg: rgba(245, 158, 11, 0.15);
    --quad-3-border: rgba(245, 158, 11, 0.3);
    --quad-4-bg: rgba(100, 116, 139, 0.15);
    --quad-4-border: rgba(100, 116, 139, 0.3);
    --bg-glow-one: rgba(85, 201, 149, 0.10);
    --bg-glow-two: rgba(182, 160, 255, 0.08);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-glass: 0 4px 30px rgba(0, 0, 0, 0.3);
}
.view-header > *, .glass-card, .modal-header > *, .daily-study-topline > * { min-width: 0; }
.view-header > div, .glass-card h2, .glass-card h3, .modal-header h2 { overflow-wrap: anywhere; }
.actions, .modal-footer, .daily-study-topline, .daily-study-footer, .study-leaderboard-heading,
.community-heading, .hosted-room-heading, .transcript-heading { flex-wrap: wrap; }
.actions > button, .modal-footer > button { max-width: 100%; white-space: normal; }
body[data-color-scheme="aurora"].dark-theme {
    --bg-base: #111827;
    --bg-glass: rgba(29, 43, 61, 0.91);
    --bg-glass-hover: rgba(42, 60, 81, 0.97);
    --border-glass: rgba(166, 218, 224, 0.15);
    --text-primary: #f2f7ff;
    --text-secondary: #b9cbdf;
    --text-muted: #8da4bd;
    --accent-primary: #70e2c0;
    --accent-primary-hover: #4bc9a5;
    --accent-secondary: #a99bff;
    --accent-on-primary: #102b2b;
    --bg-glow-one: rgba(83, 219, 184, 0.15);
    --bg-glow-two: rgba(169, 155, 255, 0.13);
}
body[data-color-scheme="aurora"].light-theme {
    --bg-base: #eef8f7;
    --bg-glass: rgba(255, 255, 255, 0.92);
    --bg-glass-hover: rgba(222, 244, 240, 0.98);
    --border-glass: rgba(31, 112, 103, 0.16);
    --text-primary: #173a3b;
    --text-secondary: #4b706f;
    --text-muted: #718e8d;
    --accent-primary: #168b75;
    --accent-primary-hover: #0e725f;
    --accent-secondary: #725cc4;
    --accent-on-primary: #ffffff;
    --bg-glow-one: rgba(22, 139, 117, 0.12);
    --bg-glow-two: rgba(114, 92, 196, 0.08);
}
body[data-color-scheme="coral"].dark-theme {
    --bg-base: #211617;
    --bg-glass: rgba(55, 35, 38, 0.91);
    --bg-glass-hover: rgba(77, 49, 52, 0.97);
    --border-glass: rgba(255, 199, 184, 0.15);
    --text-primary: #fff4ef;
    --text-secondary: #e0c0b9;
    --text-muted: #b49994;
    --accent-primary: #ff907d;
    --accent-primary-hover: #ee7566;
    --accent-secondary: #ffd27a;
    --accent-on-primary: #391b1c;
    --bg-glow-one: rgba(255, 120, 102, 0.16);
    --bg-glow-two: rgba(255, 210, 122, 0.1);
}
body[data-color-scheme="coral"].light-theme {
    --bg-base: #fff3ef;
    --bg-glass: rgba(255, 255, 255, 0.93);
    --bg-glass-hover: rgba(255, 228, 218, 0.98);
    --border-glass: rgba(161, 69, 57, 0.16);
    --text-primary: #482622;
    --text-secondary: #80534c;
    --text-muted: #a27b73;
    --accent-primary: #ce5446;
    --accent-primary-hover: #ae4036;
    --accent-secondary: #a86d14;
    --accent-on-primary: #ffffff;
    --bg-glow-one: rgba(206, 84, 70, 0.12);
    --bg-glow-two: rgba(168, 109, 20, 0.08);
}
body[data-color-scheme="midnight"].dark-theme {
    --bg-base: #0b1020;
    --bg-glass: rgba(24, 31, 54, 0.93);
    --bg-glass-hover: rgba(36, 46, 75, 0.98);
    --border-glass: rgba(178, 194, 255, 0.15);
    --text-primary: #f1f3ff;
    --text-secondary: #c1c8e4;
    --text-muted: #929cbe;
    --accent-primary: #9aaeff;
    --accent-primary-hover: #7f96f1;
    --accent-secondary: #d09bff;
    --accent-on-primary: #151b32;
    --bg-glow-one: rgba(112, 137, 255, 0.16);
    --bg-glow-two: rgba(208, 155, 255, 0.11);
}
body[data-color-scheme="midnight"].light-theme {
    --bg-base: #f1f3ff;
    --bg-glass: rgba(255, 255, 255, 0.93);
    --bg-glass-hover: rgba(226, 231, 255, 0.99);
    --border-glass: rgba(69, 82, 150, 0.17);
    --text-primary: #202744;
    --text-secondary: #515d89;
    --text-muted: #7781a5;
    --accent-primary: #4d61b8;
    --accent-primary-hover: #394d9e;
    --accent-secondary: #7b4eaa;
    --accent-on-primary: #ffffff;
    --bg-glow-one: rgba(77, 97, 184, 0.12);
    --bg-glow-two: rgba(123, 78, 170, 0.08);
}

/* Generated shop palettes: --ph is the background hue, --pa the accent hue */
body[data-color-scheme="rose"] { --ph: 340; --pa: 350; }
body[data-color-scheme="lime"] { --ph: 90; --pa: 80; }
body[data-color-scheme="mint"] { --ph: 150; --pa: 160; }
body[data-color-scheme="mocha"] { --ph: 25; --pa: 35; }
body[data-color-scheme="teal"] { --ph: 175; --pa: 165; }
body[data-color-scheme="peach"] { --ph: 20; --pa: 30; }
body[data-color-scheme="lavender"] { --ph: 265; --pa: 275; }
body[data-color-scheme="gold"] { --ph: 40; --pa: 45; }
body[data-color-scheme="slate"] { --ph: 215; --pa: 205; }
body[data-color-scheme="jungle"] { --ph: 130; --pa: 100; }
body[data-color-scheme="crimson"] { --ph: 355; --pa: 10; }
body[data-color-scheme="glacier"] { --ph: 195; --pa: 210; }
body[data-color-scheme="sakura"] { --ph: 330; --pa: 340; }
body[data-color-scheme="ember"] { --ph: 15; --pa: 40; }
body[data-color-scheme="cyber"] { --ph: 320; --pa: 180; }
body[data-color-scheme="galaxy"] { --ph: 275; --pa: 320; }
body[data-color-scheme="prism"] { --ph: 300; --pa: 60; }
body[data-color-scheme="sunrise"] { --ph: 30; --pa: 350; }
body[data-color-scheme="arctic"] { --ph: 190; --pa: 230; }
body[data-color-scheme="toxic"] { --ph: 100; --pa: 140; }
body[data-color-scheme="royal"] { --ph: 250; --pa: 45; }
body:is([data-color-scheme="rose"], [data-color-scheme="lime"], [data-color-scheme="mint"], [data-color-scheme="mocha"], [data-color-scheme="teal"], [data-color-scheme="peach"], [data-color-scheme="lavender"], [data-color-scheme="gold"], [data-color-scheme="slate"], [data-color-scheme="jungle"], [data-color-scheme="crimson"], [data-color-scheme="glacier"], [data-color-scheme="sakura"], [data-color-scheme="ember"], [data-color-scheme="cyber"], [data-color-scheme="galaxy"], [data-color-scheme="prism"], [data-color-scheme="sunrise"], [data-color-scheme="arctic"], [data-color-scheme="toxic"], [data-color-scheme="royal"]).dark-theme {
    --bg-base: hsl(var(--ph) 35% 8%);
    --bg-glass: hsla(var(--ph) 30% 14% / 0.93);
    --bg-glass-hover: hsla(var(--ph) 32% 20% / 0.98);
    --border-glass: hsla(var(--ph) 60% 80% / 0.15);
    --text-primary: hsl(var(--ph) 60% 96%);
    --text-secondary: hsl(var(--ph) 25% 78%);
    --text-muted: hsl(var(--ph) 15% 62%);
    --accent-primary: hsl(var(--pa) 85% 70%);
    --accent-primary-hover: hsl(var(--pa) 70% 60%);
    --accent-secondary: hsl(var(--ph) 80% 72%);
    --accent-on-primary: hsl(var(--ph) 40% 10%);
    --bg-glow-one: hsla(var(--pa) 85% 60% / 0.16);
    --bg-glow-two: hsla(var(--ph) 80% 65% / 0.1);
}
body:is([data-color-scheme="rose"], [data-color-scheme="lime"], [data-color-scheme="mint"], [data-color-scheme="mocha"], [data-color-scheme="teal"], [data-color-scheme="peach"], [data-color-scheme="lavender"], [data-color-scheme="gold"], [data-color-scheme="slate"], [data-color-scheme="jungle"], [data-color-scheme="crimson"], [data-color-scheme="glacier"], [data-color-scheme="sakura"], [data-color-scheme="ember"], [data-color-scheme="cyber"], [data-color-scheme="galaxy"], [data-color-scheme="prism"], [data-color-scheme="sunrise"], [data-color-scheme="arctic"], [data-color-scheme="toxic"], [data-color-scheme="royal"]).light-theme {
    --bg-base: hsl(var(--ph) 80% 96%);
    --bg-glass: rgba(255, 255, 255, 0.93);
    --bg-glass-hover: hsla(var(--ph) 70% 92% / 0.99);
    --border-glass: hsla(var(--ph) 40% 35% / 0.17);
    --text-primary: hsl(var(--ph) 35% 16%);
    --text-secondary: hsl(var(--ph) 20% 36%);
    --text-muted: hsl(var(--ph) 12% 48%);
    --accent-primary: hsl(var(--pa) 60% 36%);
    --accent-primary-hover: hsl(var(--pa) 62% 28%);
    --accent-secondary: hsl(var(--ph) 50% 38%);
    --accent-on-primary: #ffffff;
    --bg-glow-one: hsla(var(--pa) 60% 45% / 0.12);
    --bg-glow-two: hsla(var(--ph) 50% 45% / 0.08);
}

body[data-shop-palette].dark-theme {
    --bg-base: hsl(var(--ph) 28% 8%);
    --bg-glass: hsla(var(--ph) 24% 14% / .96);
    --bg-glass-hover: hsla(var(--ph) 28% 20% / .98);
    --border-glass: hsla(var(--pa) 55% 78% / .22);
    --text-primary: hsl(var(--ph) 40% 97%);
    --text-secondary: hsl(var(--ph) 18% 80%);
    --text-muted: hsl(var(--ph) 12% 68%);
    --accent-primary: hsl(var(--pa) 78% 72%);
    --accent-primary-hover: hsl(var(--pa) 72% 68%);
    --accent-secondary: hsl(var(--ph) 72% 72%);
    --accent-on-primary: #101820;
    --bg-glow-one: hsla(var(--pa) 85% 60% / .16);
    --bg-glow-two: hsla(var(--ph) 80% 65% / .1);
}
body[data-shop-palette].light-theme {
    --bg-base: hsl(var(--ph) 50% 96%);
    --bg-glass: hsla(var(--ph) 30% 99% / .96);
    --bg-glass-hover: hsl(var(--ph) 38% 92%);
    --border-glass: hsla(var(--pa) 40% 30% / .24);
    --text-primary: hsl(var(--ph) 28% 14%);
    --text-secondary: hsl(var(--ph) 20% 30%);
    --text-muted: hsl(var(--ph) 12% 39%);
    --accent-primary: hsl(var(--pa) 65% 26%);
    --accent-primary-hover: hsl(var(--pa) 65% 23%);
    --accent-secondary: hsl(var(--ph) 55% 30%);
    --accent-on-primary: #ffffff;
    --bg-glow-one: hsla(var(--pa) 60% 45% / .12);
    --bg-glow-two: hsla(var(--ph) 50% 45% / .08);
}
body[data-color-scheme="prism"] .glass-card {
    border-color: var(--accent-primary);
    background-image: linear-gradient(135deg, #22d3ee0f, #f472b61c 45%, #fde04712);
}
body[data-color-scheme="eclipse"] .glass-card {
    border-color: var(--accent-primary);
    background-image: radial-gradient(ellipse at top right, #fb923c22, transparent 65%);
}
body[data-color-scheme="opal"] .glass-card {
    border-color: var(--accent-primary);
    background-image: linear-gradient(120deg, #67e8f924, #c4b5fd24, #f9a8d422, #a7f3d020);
}

/* LIGHT THEME */
.light-theme {
    /* Colors */
    --bg-base: #f3f7f2;
    --bg-glass: rgba(255, 255, 255, 0.88);
    --bg-glass-hover: rgba(232, 243, 235, 0.96);
    --border-glass: rgba(33, 77, 54, 0.13);
    
    --text-primary: #17281f;
    --text-secondary: #4c6556;
    --text-muted: #536b5d;
    
    --accent-primary: #137b53;
    --accent-primary-hover: #0f714c;
    --accent-secondary: #7258cc;
    --accent-on-primary: #ffffff;
    
    --status-success: #059669; /* Emerald 600 */
    --status-warning: #d97706; /* Amber 600 */
    --status-danger: #dc2626; /* Red 600 */
    --status-info: #0284c7; /* Sky 600 */

    /* Eisenhower Matrix Colors (Light) */
    --quad-1-bg: rgba(220, 38, 38, 0.1);
    --quad-1-border: rgba(220, 38, 38, 0.2);
    --quad-2-bg: rgba(5, 150, 105, 0.1);
    --quad-2-border: rgba(5, 150, 105, 0.2);
    --quad-3-bg: rgba(217, 119, 6, 0.1);
    --quad-3-border: rgba(217, 119, 6, 0.2);
    --quad-4-bg: rgba(148, 163, 184, 0.1);
    --quad-4-border: rgba(148, 163, 184, 0.2);
    --bg-glow-one: rgba(22, 134, 92, 0.08);
    --bg-glow-two: rgba(114, 88, 204, 0.06);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glass: 0 4px 30px rgba(0, 0, 0, 0.05);
}

.auth-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.auth-card {
    width: min(100%, 460px);
    padding: clamp(24px, 5vw, 40px);
}

.auth-card > .logo-container {
    justify-content: center;
    margin-bottom: 24px;
}

.auth-card h1,
.auth-card > p {
    text-align: center;
}

.auth-form {
    display: grid;
    gap: 16px;
    margin-top: 24px;
}

.auth-form label {
    display: grid;
    gap: 6px;
}

.auth-form input,
.analytics-controls select {
    width: 100%;
}

.auth-message {
    min-height: 1.4em;
    margin: 12px 0 0;
}

.auth-message.error {
    color: var(--status-danger);
}

.auth-switch {
    margin-top: 20px;
}

.text-btn {
    padding: 0;
    color: var(--accent-primary);
    background: none;
    border: 0;
    font: inherit;
    text-decoration: underline;
    cursor: pointer;
}

.analytics-controls {
    display: grid;
    grid-template-columns: auto minmax(150px, 1fr) auto minmax(160px, 1fr) auto minmax(110px, 0.6fr);
    align-items: center;
    gap: 12px;
    padding: 16px;
    margin-bottom: 16px;
}

.grade-progress-chart {
    margin-bottom: 20px;
}

.course-weight-label {
    display: block;
    max-height: 5em;
    overflow-y: auto;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.form-label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
}

.study-tips-widget ul {
    display: grid;
    gap: 10px;
    padding-left: 22px;
    color: var(--text-secondary);
}

@media (max-width: 760px) {
    .analytics-controls {
        grid-template-columns: 1fr;
    }
}

/* --- RESET & BASE STYLES --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    scrollbar-color: var(--accent-primary) transparent;
    scrollbar-width: thin;
}

*::-webkit-scrollbar { width: 9px; height: 9px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--accent-primary) 58%, transparent);
    border: 2px solid transparent;
    border-radius: 999px;
    background-clip: padding-box;
}
*::-webkit-scrollbar-thumb:hover { background: var(--accent-primary); background-clip: padding-box; }

body {
    font-family: var(--font-main);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    overflow-y: auto;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    
    /* Background Pattern */
    background-image: 
        radial-gradient(circle at 15% 50%, var(--bg-glow-one) 0%, transparent 50%),
        radial-gradient(circle at 85% 30%, var(--bg-glow-two) 0%, transparent 50%);
    background-attachment: fixed;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-primary-hover);
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    font-family: inherit;
    border: none;
    background: none;
    color: inherit;
    outline: none;
}

button:focus-visible, [role="button"]:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--accent-primary) 78%, transparent);
    outline-offset: 2px;
}

input, select, textarea {
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-primary);
    background-color: rgba(0,0,0,0.2);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-sm);
    padding: 10px 12px;
    width: 100%;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input::placeholder, textarea::placeholder { color: var(--text-muted); opacity: 1; }
input[type="checkbox"], input[type="radio"], input[type="range"], progress { accent-color: var(--accent-primary); }

input[type="checkbox"], input[type="radio"] {
    width: 18px;
    height: 18px;
    padding: 0;
    flex: 0 0 auto;
}

.light-theme input, .light-theme select, .light-theme textarea {
    background-color: rgba(255,255,255,0.8);
}

.light-theme { color-scheme: light; }
input:is([type="date"], [type="time"], [type="datetime-local"])::-webkit-calendar-picker-indicator {
    opacity: 1;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
}
body.dark-theme input:is([type="date"], [type="time"], [type="datetime-local"])::-webkit-calendar-picker-indicator { filter: brightness(0) invert(1); }
body.light-theme input:is([type="date"], [type="time"], [type="datetime-local"])::-webkit-calendar-picker-indicator { filter: brightness(0); }
.date-picker-hint { display: block; margin-top: 6px; color: var(--text-secondary); font-size: .75rem; }
.score-number-field { position: relative; min-width: 0; }
.score-number-field input { padding-right: 36px; appearance: textfield; -moz-appearance: textfield; }
.score-number-field input::-webkit-inner-spin-button, .score-number-field input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
.score-number-arrows { position: absolute; top: 1px; right: 1px; bottom: 1px; display: grid; width: 30px; }
.score-number-arrows button { padding: 0; border: 0; background: transparent; color: var(--text-secondary); cursor: pointer; border-radius: 4px; }
.score-number-arrows button:hover { background: var(--bg-glass); color: var(--text-primary); }
select option, select optgroup {
    background-color: var(--bg-base);
    color: var(--text-primary);
}
select option:disabled { color: var(--text-muted); }
button, select, summary, [role="button"], .flashcard-container { touch-action: manipulation; }

input:focus, select:focus, textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-primary) 24%, transparent);
    outline: none;
}

/* --- GLASSMORPHISM UTILITIES --- */
.glass-panel {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-glass);
}

.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 20px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.glass-card:hover {
    box-shadow: var(--shadow-lg);
}

/* --- LAYOUT SHELL --- */
#app-container {
    display: flex;
    min-height: 100vh;
    overflow: visible;
}

/* --- SIDEBAR --- */
#sidebar {
    position: sticky;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-glass);
    z-index: var(--z-sidebar);
    flex-shrink: 0;
    transition: width var(--transition-normal);
}

.sidebar-header {
    position: relative;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    min-width: 0;
    max-width: 100%;
}

.logo-mark {
    width: 40px;
    height: 40px;
    border-radius: 11px;
    flex-shrink: 0;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.logo-icon {
    font-size: 2rem;
    color: var(--accent-primary);
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.1;
}

.logo-text small {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
}

.sidebar-collapse-btn {
    position: absolute;
    z-index: 2;
    top: 50%;
    right: -15px;
    transform: translateY(-50%);
    flex: 0 0 auto;
    width: 32px;
    height: 32px;
    border: 1px solid var(--border-glass);
    background: var(--bg-base);
    color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

#main-nav {
    flex-grow: 1;
    overflow-y: auto;
    padding: var(--spacing-md) 0;
}

.nav-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: 0 var(--spacing-md);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
    font-weight: 500;
}

.nav-item:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: color-mix(in srgb, var(--accent-primary) 14%, transparent);
    color: var(--accent-primary);
    border-left: 3px solid var(--accent-primary);
}

.nav-item i {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}

@media (min-width: 769px) {
    .sidebar-collapsed #sidebar { width: 76px; }
    .sidebar-collapsed .sidebar-header { justify-content: center; padding: var(--spacing-md) var(--spacing-xs); }
    .sidebar-collapsed .logo-container { display: none; }
    .sidebar-collapsed .sidebar-collapse-btn { margin: 0 auto; }
    .sidebar-collapsed #main-nav { overflow-x: hidden; }
    .sidebar-collapsed .nav-links { padding: 0 var(--spacing-sm); }
    .sidebar-collapsed .nav-item { justify-content: center; padding: 12px 8px; }
    .sidebar-collapsed .nav-item span,
    .sidebar-collapsed .sidebar-coin-count,
    .sidebar-collapsed #quick-audio-deck { display: none; }
    .sidebar-collapsed .nav-item i { width: auto; }
}

/* Quick Audio Deck (Sidebar) */
#quick-audio-deck {
    margin: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
}

#quick-audio-deck h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 8px;
}

.audio-toggles {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.audio-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-glass-hover);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-glass);
}

.audio-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.audio-btn.active {
    background: var(--accent-primary);
    color: var(--accent-on-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 10px color-mix(in srgb, var(--accent-primary) 42%, transparent);
}

/* --- MAIN CONTENT AREA --- */
#main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    height: auto;
    position: relative;
    overflow: visible;
    min-width: 0;
}

/* --- TOP HEADER --- */
#top-header {
    min-height: var(--header-height);
    height: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-xl);
    gap: var(--spacing-sm) var(--spacing-md);
    flex-wrap: wrap;
    border-bottom: 1px solid var(--border-glass);
    z-index: var(--z-header);
    flex-shrink: 0;
}

.header-left h1 {
    font-size: 1.5rem;
    margin: 0;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.header-badge.warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--status-warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
    animation: pulseWarning 2s infinite;
}

@keyframes pulseWarning {
    0% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.4); }
    70% { box-shadow: 0 0 0 6px rgba(245, 158, 11, 0); }
    100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); }
}

.focus-timer-control {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 4px 12px;
    border-radius: 20px;
    background: color-mix(in srgb, var(--accent-primary) 8%, transparent);
}

.focus-time-display {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
}

.focus-play-btn {
    color: var(--accent-primary);
    background: color-mix(in srgb, var(--accent-primary) 12%, transparent);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.focus-play-btn:hover {
    background: color-mix(in srgb, var(--accent-primary) 22%, transparent);
}

.profile-info {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

#header-grade-level {
    font-weight: 600;
}

/* Tooltip System */
.tooltip-container {
    position: relative;
    cursor: help;
}

.tooltip-content {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    background: var(--bg-base);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    font-size: 0.85rem;
    white-space: nowrap;
    z-index: var(--z-tooltip);
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
    pointer-events: none;
}

.tooltip-content.bottom-left {
    top: 100%;
    right: 0;
    margin-top: 8px;
}

.tooltip-container:hover .tooltip-content {
    visibility: visible;
    opacity: 1;
}

/* Buttons */
.btn-base,
.primary-btn,
.secondary-btn,
.ghost-btn,
.danger-btn {
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all var(--transition-fast);
}

.primary-btn {
    background: var(--accent-primary);
    color: var(--accent-on-primary);
    border: none;
    box-shadow: 0 2px 4px color-mix(in srgb, var(--accent-primary) 28%, transparent);
}

.primary-btn:hover {
    background: var(--accent-primary-hover);
    box-shadow: 0 4px 8px color-mix(in srgb, var(--accent-primary) 34%, transparent);
    transform: translateY(-1px);
}

.secondary-btn {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
}

.secondary-btn:hover {
    background: color-mix(in srgb, var(--accent-primary) 12%, var(--bg-glass-hover));
}

.ghost-btn { color: var(--text-primary); border: 1px solid var(--border-glass); }
.ghost-btn:hover { background: var(--bg-glass-hover); }

.danger-btn {
    background: rgba(239, 68, 68, 0.1);
    color: var(--status-danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.danger-btn:hover {
    background: var(--status-danger);
    color: white;
}

.icon-btn {
    flex: none;
    background: transparent;
    border: 0;
    padding: 0;
    cursor: pointer;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.icon-btn:hover {
    color: var(--text-primary);
    background: var(--bg-glass-hover);
}

.mobile-mixer-toggle { display: none; }

.full-width {
    width: 100%;
}

/* --- VIEW CONTAINERS --- */
#view-container {
    container: workspace / inline-size;
    flex-grow: 1;
    overflow: visible;
    padding: var(--spacing-xl);
    position: relative;
}

.view {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.view.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

/* Utility Classes */
.hidden { display: none !important; }
.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-xl);
    font-style: italic;
}

.data-save-status {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    background: var(--bg-glass);
}

.data-save-status[data-state="error"] { color: var(--status-danger); border-color: var(--status-danger); }

/* --- 1. DASHBOARD SPECIFICS --- */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-lg);
}

.dashboard-grid > .full-width { grid-column: 1 / -1; }

.transcript-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--spacing-md); }
.transcript-heading h3 { margin: 0; }
.transcript-heading p { color: var(--text-secondary); font-size: 0.9rem; }
.transcript-list { display: grid; gap: var(--spacing-sm); }
.transcript-class { overflow: hidden; border: 1px solid var(--border-glass); border-radius: var(--border-radius-md); background: var(--bg-glass); }
.transcript-class-details > summary,
.transcript-category > summary { list-style: none; cursor: pointer; }
.transcript-class-details > summary::-webkit-details-marker,
.transcript-category > summary::-webkit-details-marker { display: none; }
.transcript-class-summary { display: grid; grid-template-columns: 24px minmax(180px, 1fr) minmax(74px, auto) minmax(82px, auto) minmax(60px, auto); gap: var(--spacing-md); align-items: center; padding: var(--spacing-md); }
.transcript-class-summary:hover, .transcript-category > summary:hover { background: var(--bg-glass-hover); }
.transcript-chevron { display: grid; place-items: center; color: var(--accent-primary); transition: transform var(--transition-fast); }
.transcript-class-details[open] > .transcript-class-summary > .transcript-chevron,
.transcript-category[open] > summary > .transcript-chevron { transform: rotate(90deg); }
.transcript-class-name, .transcript-grade, .transcript-class-target { display: grid; gap: 2px; }
.transcript-class-name strong { font-size: 1rem; }
.transcript-class-name small, .transcript-grade small, .transcript-class-target small { color: var(--text-secondary); font-size: 0.82rem; }
.transcript-grade { justify-items: end; }
.transcript-grade > strong { font-size: 1.1rem; color: var(--accent-primary); }
.transcript-class-target { justify-items: end; }
.transcript-item-count { justify-self: end; color: var(--text-secondary); font-size: 0.82rem; white-space: nowrap; }
.transcript-class-content { padding: 0 var(--spacing-md) var(--spacing-md) 56px; }
.transcript-category-heading { display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-sm); padding: var(--spacing-sm) 0; }
.transcript-category { margin-top: var(--spacing-xs); border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); overflow: hidden; }
.transcript-category > summary { display: grid; grid-template-columns: 20px minmax(120px, 1fr) minmax(96px, auto) minmax(72px, auto) minmax(48px, auto); gap: var(--spacing-sm); align-items: center; padding: 10px var(--spacing-sm); }
.transcript-category-name { font-weight: 600; }
.transcript-category-meta, .transcript-category-grade { color: var(--text-secondary); font-size: 0.85rem; }
.transcript-category-grade { color: var(--text-primary); text-align: right; }
.transcript-assignment-list { padding: 0 var(--spacing-sm) var(--spacing-sm) 30px; }
.transcript-assignment { display: grid; grid-template-columns: 10px minmax(150px, 1fr) minmax(80px, auto) auto; gap: var(--spacing-sm); align-items: center; padding: 10px; border-top: 1px solid var(--border-glass); }
.assignment-status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--status-warning); }
.transcript-assignment.is-complete .assignment-status-dot { background: var(--status-success); }
.transcript-assignment-main { display: grid; gap: 3px; min-width: 0; }
.transcript-assignment-main strong { overflow-wrap: anywhere; }
.transcript-assignment-main span, .transcript-assignment-score { color: var(--text-secondary); font-size: 0.82rem; }
.transcript-assignment-score { text-align: right; white-space: nowrap; }
.transcript-assignment-actions { display: flex; justify-content: flex-end; gap: 4px; }
.transcript-assignment-actions button { padding: 6px 9px; font-size: 0.78rem; }
.transcript-empty { padding: var(--spacing-sm); color: var(--text-muted); font-size: 0.88rem; }
.transcript-class-actions { display: flex; justify-content: flex-end; gap: var(--spacing-xs); padding: 0 var(--spacing-md) var(--spacing-sm); }

.scenario-toolbar {
    display: grid;
    grid-template-columns: auto minmax(140px, 1fr) auto minmax(170px, 1.2fr) auto auto auto;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}
.scenario-toolbar label { color: var(--text-secondary); font-size: 0.88rem; }
.scenario-toolbar input, .scenario-toolbar select { min-width: 0; }
.scenario-builder { margin-bottom: var(--spacing-lg); }
.scenario-builder > p, .view-header > div > p { color: var(--text-secondary); }
.scenario-assignment-form {
    display: grid;
    grid-template-columns: minmax(150px, 1.4fr) repeat(4, minmax(110px, 1fr)) auto;
    gap: var(--spacing-sm);
    align-items: end;
    margin-top: var(--spacing-md);
}
.scenario-assignment-form label { display: grid; gap: 6px; color: var(--text-secondary); font-size: 0.84rem; }
.scenario-assignment-form button { min-height: 43px; }
.scenario-score-tools { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding-top: 8px; border-top: 1px solid var(--border-glass); }
.scenario-score-tools > span { color: var(--text-secondary); font-size: .84rem; font-weight: 700; }
.scenario-score-tools > div { display: flex; flex-wrap: wrap; gap: 6px; }
.scenario-score-tools button { min-height: 36px; padding: 6px 10px; font-size: .82rem; }
.scenario-score-tools > small { margin-left: auto; color: var(--text-secondary); font-variant-numeric: tabular-nums; }
.scenario-results-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--spacing-lg); align-items: start; }
.scenario-item-list, .scenario-grade-list { display: grid; gap: var(--spacing-sm); }
.scenario-item, .scenario-grade-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: var(--spacing-md);
    align-items: center;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-sm);
    background: var(--bg-glass);
}
.scenario-item > div { display: grid; min-width: 0; gap: 3px; }
.scenario-item > div strong { overflow-wrap: anywhere; }
.scenario-item > div span, .scenario-grade-row small { color: var(--text-secondary); font-size: 0.82rem; }
.scenario-remove-btn { border: 1px solid var(--border-glass); }
.scenario-grade-row { grid-template-columns: minmax(0, 1fr) auto; }
.scenario-grade-row > span { white-space: nowrap; }
.scenario-grade-row > small { grid-column: 1 / -1; }
.scenario-grade-row .grade-change-positive { color: var(--status-success); }
.scenario-grade-row .grade-change-negative { color: var(--status-danger); }
.scenario-toolbar .danger-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.scenario-existing { margin-bottom: var(--spacing-lg); }
.importer-mode-tabs { display: inline-flex; gap: 6px; padding: 4px; border: 1px solid var(--border-glass); border-radius: 12px; margin-bottom: var(--spacing-md); }
.importer-mode-btn { border: 0; background: transparent; color: var(--text-secondary); padding: 8px 14px; border-radius: 8px; cursor: pointer; font: inherit; }
.importer-mode-btn.active { background: var(--accent-primary); color: var(--accent-on-primary); }
.manual-card-rows { display: grid; gap: 8px; margin-bottom: var(--spacing-md); }
.manual-card-row { display: grid; grid-template-columns: 28px 1fr 1.5fr auto; gap: 8px; align-items: center; }
.manual-card-number { color: var(--text-secondary); text-align: center; font-size: 0.85rem; }
.manual-card-actions { display: flex; gap: var(--spacing-sm); justify-content: space-between; align-items: center; flex-wrap: wrap; }
.manual-card-count { color: var(--text-secondary); font-size: 0.85rem; }
.manual-card-row textarea { resize: vertical; min-height: 44px; font: inherit; }
.manual-card-row.incomplete textarea:placeholder-shown, .manual-card-row.incomplete textarea { border-color: #f87171; }
@media (max-width: 600px) { .manual-card-row { grid-template-columns: 24px 1fr auto; } .manual-card-row .manual-card-back { grid-column: 2; } }
.scenario-existing-list { display: grid; gap: var(--spacing-md); max-height: 420px; overflow-y: auto; }
.scenario-existing-group h4 { margin: 0 0 var(--spacing-sm); color: var(--text-secondary); font-size: 0.9rem; }
.scenario-existing-row { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: var(--spacing-sm); align-items: center; padding: 10px 12px; border: 1px solid var(--border-glass); border-radius: 10px; margin-bottom: 6px; }
.scenario-existing-row.is-changed { border-color: var(--accent-primary, #6366f1); }
.scenario-existing-row > div { display: grid; min-width: 0; }
.scenario-existing-row small { color: var(--text-secondary); }
.scenario-existing-input { display: flex; align-items: center; gap: 6px; white-space: nowrap; }
.scenario-existing-input input { width: 90px; }
.practice-multiplayer-setup { margin-top: var(--spacing-lg); }
.practice-multiplayer-form { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 190px), 1fr)); align-items: end; gap: var(--spacing-md); }
.practice-multiplayer-form label { display: grid; gap: 6px; color: var(--text-secondary); font-size: .86rem; font-weight: 700; }
.practice-multiplayer-form select { min-width: 0; min-height: 42px; padding: 8px 10px; border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); color: var(--text-primary); background: var(--bg-base); font: inherit; }
.assignment-filters {
    display: grid;
    grid-template-columns: minmax(200px, 1.4fr) minmax(160px, 1fr) minmax(150px, 0.8fr) auto;
    gap: var(--spacing-sm);
    align-items: center;
    margin: var(--spacing-md) 0;
}
.assignment-search-field { position: relative; display: block; min-width: 0; }
.assignment-search-field > i { position: absolute; top: 50%; left: 12px; color: var(--text-muted); transform: translateY(-50%); pointer-events: none; }
.assignment-search-field input { padding-left: 36px; }
.assignment-result-count { color: var(--text-muted); font-size: 0.84rem; white-space: nowrap; }
.assignment-filters input, .assignment-filters select, .focus-sprint-controls input, .focus-sprint-controls select { width: 100%; min-width: 0; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.widget h3 {
    font-size: 1.1rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.empty-list {
    min-height: 100px;
}

.review-stats, .gpa-stats {
    display: flex;
    justify-content: space-around;
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* --- 2. GPA & TRANSCRIPT SPECIFICS --- */
table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th, td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-glass);
}

th {
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

tbody tr:hover {
    background-color: var(--bg-glass-hover);
}

.class-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.gpa-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.gpa-summary-grid article { display: grid; gap: 4px; }
.gpa-summary-label { color: var(--text-secondary); font-size: 0.9rem; }
.gpa-summary-grid strong { color: var(--accent-primary); font-size: 2rem; line-height: 1.1; }
.gpa-summary-grid small, .class-term { color: var(--text-muted); }
.class-term { font-size: 0.85rem; }

.class-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.class-card h3 { margin: 2px 0; }
.class-card p { color: var(--text-secondary); font-size: 0.92rem; }
.class-card .primary-btn { align-self: flex-start; margin-top: auto; }
.class-code { color: var(--text-muted); font: 0.8rem var(--font-mono); }

.class-grade-track {
    height: 8px;
    overflow: hidden;
    background: var(--border-glass);
    border-radius: 99px;
    margin: 0 0 var(--spacing-sm);
}

.class-grade-track span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent-primary), var(--status-success));
}

.class-detail-summary, .class-grade-metrics, .category-row, .calendar-event,
.study-priority-item, .inline-form, .category-add-form {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.class-detail-summary { justify-content: space-between; margin-bottom: var(--spacing-lg); }
.class-focus-panel { display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-md); margin-bottom: var(--spacing-lg); }
.class-focus-panel h3, .class-focus-panel p { margin: 0; }
.class-focus-panel p, .settings-hint { color: var(--text-secondary); font-size: 0.9rem; }
.class-detail-summary p, .class-detail-grid p, .study-guidance-intro { color: var(--text-secondary); }
.class-grade-metrics > div { min-width: 90px; text-align: center; }
.class-grade-metrics span { display: block; font-size: 1.7rem; font-weight: 700; color: var(--accent-primary); }
.class-grade-metrics small, .category-row span { display: block; color: var(--text-muted); }
.class-detail-grid { display: grid; grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.2fr); gap: var(--spacing-lg); margin-bottom: var(--spacing-lg); }
.class-detail-grid .glass-card { min-width: 0; }
.inline-form input { max-width: 150px; }
.category-list { display: grid; gap: var(--spacing-sm); }
.category-row { justify-content: space-between; border-bottom: 1px solid var(--border-glass); padding: var(--spacing-sm) 0; }
.category-row > div { flex: 1; min-width: 0; }
.category-add-form { margin-top: var(--spacing-md); }
.category-add-form input:first-child { flex: 1; min-width: 120px; }
.category-add-form input[type="number"] { max-width: 110px; }
.weight-note { margin-top: var(--spacing-sm); color: var(--status-warning) !important; font-size: 0.85rem; }
.weight-valid { margin-top: var(--spacing-sm); color: var(--status-success) !important; font-size: 0.85rem; }
.class-work-section { margin-bottom: var(--spacing-lg); }
.study-guidance-list { display: grid; gap: var(--spacing-sm); }
.study-guidance-list p { margin: 0; }
.study-priority-item { align-items: flex-start; padding: var(--spacing-sm) 0; border-bottom: 1px solid var(--border-glass); }
.study-priority-item > div { display: grid; gap: 2px; }
.study-priority-item span, .study-priority-item small { color: var(--text-secondary); }
.priority-rank { display: grid; place-items: center; min-width: 28px; height: 28px; border-radius: 50%; background: var(--accent-primary); color: var(--accent-on-primary) !important; font-weight: 700; }

.calendar-layout { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(260px, 0.8fr); gap: var(--spacing-lg); align-items: start; }
.calendar-toolbar { display: flex; align-items: center; gap: var(--spacing-sm); margin-bottom: var(--spacing-md); }
.calendar-toolbar h2 { flex: 1; margin: 0; text-align: center; }
.calendar-weekdays, .calendar-days { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 6px; }
.calendar-weekdays { margin-bottom: 6px; text-align: center; color: var(--text-muted); font-size: 0.8rem; font-weight: 700; }
.calendar-day { display: flex; min-height: 72px; flex-direction: column; align-items: flex-start; gap: 4px; padding: 8px; border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass); color: var(--text-primary); text-align: left; }
.calendar-day:hover, .calendar-day.selected { border-color: var(--accent-primary); background: var(--bg-glass-hover); }
.calendar-day.today > span { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--accent-primary); color: var(--accent-on-primary); }
.calendar-day small { color: var(--accent-primary); font-size: 0.7rem; }
.calendar-day-empty { min-height: 72px; }
.calendar-agenda .view-header { align-items: flex-start; gap: var(--spacing-sm); }
.calendar-agenda h3 { font-size: 1rem; }
.calendar-event { justify-content: space-between; align-items: flex-start; border-top: 1px solid var(--border-glass); padding: var(--spacing-md) 0; }
.calendar-event > div { display: grid; gap: 3px; }
.calendar-event span, .calendar-event small { color: var(--text-secondary); font-size: 0.85rem; }
.calendar-event button { flex-shrink: 0; }
.calendar-schedule { margin-bottom: var(--spacing-md); padding: var(--spacing-sm) var(--spacing-md); border-radius: var(--border-radius-sm); background: var(--bg-glass); }
.calendar-schedule h4, .calendar-agenda > h4 { margin: 0 0 var(--spacing-sm); }
.calendar-schedule p { display: flex; justify-content: space-between; gap: var(--spacing-sm); margin: 4px 0; font-size: 0.86rem; }
.calendar-schedule small { color: var(--text-muted); text-align: right; }
.schedule-day-type { margin: 0; color: var(--text-secondary); font-size: 0.85rem; }
.schedule-editor { padding: var(--spacing-lg); }
.schedule-pattern-headings, .schedule-course-row { display: grid; grid-template-columns: minmax(150px, 1.5fr) repeat(3, minmax(120px, 1fr)); gap: var(--spacing-md); align-items: center; }
.schedule-pattern-headings { padding: 0 0 var(--spacing-sm); color: var(--text-secondary); font-size: 0.86rem; font-weight: 700; }
.schedule-course-row { padding: var(--spacing-sm) 0; border-top: 1px solid var(--border-glass); }
.schedule-period-select select { width: 100%; }
.schedule-actions { display: flex; justify-content: space-between; align-items: center; gap: var(--spacing-md); margin-top: var(--spacing-lg); }
.schedule-actions p { color: var(--text-secondary); font-size: 0.9rem; }
.daily-period-row { display: flex; justify-content: space-between; gap: var(--spacing-sm); padding: 7px 0; border-bottom: 1px solid var(--border-glass); }
.daily-period-row > span { color: var(--text-secondary); }
.daily-period-row small { display: block; color: var(--text-muted); font-size: 0.72rem; }
.study-priority-item p { margin: 5px 0 0; color: var(--text-primary); font-size: 0.9rem; }
.study-priority-item p strong { color: var(--accent-primary); }

.arcade-game-content { width: min(100%, 800px); padding: var(--spacing-lg); text-align: center; }
.arcade-game-content h4 { font-size: 1.4rem; margin: var(--spacing-lg) 0; }
.arcade-answer-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--spacing-sm); }
.arcade-answer-options button { min-height: 54px; padding: var(--spacing-sm); border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); color: var(--text-primary); }
.arcade-answer-options button:hover:not(:disabled) { border-color: var(--accent-primary); background: var(--bg-glass-hover); }
.arcade-answer-options button.correct { border-color: var(--status-success); background: var(--status-success); color: white; }
#arcade-game-content > button { margin-top: var(--spacing-md); }
.memory-card-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--spacing-sm); }
.memory-card { min-height: 95px; padding: var(--spacing-sm); overflow-wrap: anywhere; border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass-hover); color: var(--text-primary); font-weight: 600; }
.memory-card.revealed { border-color: var(--accent-primary); background: color-mix(in srgb, var(--accent-primary) 12%, var(--bg-glass)); }
.memory-card.matched { border-color: var(--status-success); background: color-mix(in srgb, var(--status-success) 16%, var(--bg-glass)); }

.practice-test-setup { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--spacing-md); max-width: 760px; margin: 0 auto; }
.practice-test-setup > p, .practice-test-setup > fieldset, .practice-test-setup > button { grid-column: 1 / -1; }
.practice-test-setup > label, .practice-test-written { display: grid; gap: 6px; color: var(--text-secondary); font-size: 0.9rem; }
.practice-test-setup fieldset { display: flex; gap: var(--spacing-lg); flex-wrap: wrap; padding: var(--spacing-md); border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); }
.practice-test-setup fieldset label { display: flex; align-items: center; gap: var(--spacing-sm); }
.practice-test-setup fieldset input, .practice-test-choice input { width: auto; accent-color: var(--accent-primary); }
.practice-test-setup > button { justify-self: start; }
.practice-test-choice { display: flex; align-items: flex-start; gap: var(--spacing-sm); padding: var(--spacing-md); border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass); cursor: pointer; }
.practice-test-choice:has(input:checked) { border-color: var(--accent-primary); background: var(--bg-glass-hover); }
.practice-test-written textarea { min-height: 100px; }
.practice-test-feedback { margin: var(--spacing-md) 0; font-weight: 700; }
.practice-test-feedback.is-correct, .practice-test-review-item.is-correct { color: var(--status-success); }
.practice-test-feedback.is-incorrect, .practice-test-review-item.is-incorrect { color: var(--status-danger); }
.practice-test-results { display: grid; gap: var(--spacing-md); }
.practice-test-score { color: var(--accent-primary); font-size: 1.4rem; font-weight: 700; }
.practice-test-review { display: grid; gap: var(--spacing-sm); }
.practice-test-review-item { display: grid; gap: 4px; padding: var(--spacing-md); border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass); }
.practice-test-review-item span { color: var(--text-secondary); }

/* --- 3. PLANNER SPECIFICS --- */
.planner-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.eisenhower-matrix {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
    gap: var(--spacing-md);
    min-height: 0;
}

.matrix-quadrant {
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-md);
    border: 1px solid;
    display: flex;
    flex-direction: column;
}

.matrix-quadrant h4 {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.quadrant-1 { background: var(--quad-1-bg); border-color: var(--quad-1-border); }
.quadrant-2 { background: var(--quad-2-bg); border-color: var(--quad-2-border); }
.quadrant-3 { background: var(--quad-3-bg); border-color: var(--quad-3-border); }
.quadrant-4 { background: var(--quad-4-bg); border-color: var(--quad-4-border); }

.matrix-quadrant ul {
    flex-grow: 1;
    overflow-y: auto;
}

.matrix-quadrant li {
    background: var(--bg-base);
    padding: 8px;
    border-radius: 4px;
    margin-bottom: 8px;
    font-size: 0.85rem;
    border-left: 3px solid;
}

.quadrant-1 li { border-left-color: var(--status-danger); }
.quadrant-2 li { border-left-color: var(--status-success); }
.quadrant-3 li { border-left-color: var(--status-warning); }
.quadrant-4 li { border-left-color: var(--text-muted); }

/* Priority Badge Colors for Table */
.priority-high { color: var(--status-danger); font-weight: bold; }
.priority-med { color: var(--status-warning); font-weight: bold; }
.priority-low { color: var(--status-success); }

/* --- 4. FLASHCARD STUDIO SPECIFICS --- */
.deck-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(250px, 100%), 1fr));
    gap: var(--spacing-md);
}

.deck-card {
    cursor: pointer;
    text-align: center;
}

.deck-card i {
    font-size: 2rem;
    color: var(--accent-secondary);
    margin-bottom: var(--spacing-sm);
}

/* 3D Flashcard */
#active-study-area {
    width: min(100%, 760px);
    margin-inline: auto;
}
#active-study-area .flashcard-container, #active-study-area .study-controls {
    width: 100%;
    max-width: 600px;
    margin-inline: auto;
}
.study-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.flashcard-container {
    width: 100%;
    max-width: 600px;
    height: 350px;
    margin: 0 auto var(--spacing-lg);
    perspective: 1000px;
    -webkit-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.flashcard-inner {
    width: 100%;
    height: 100%;
    position: relative;
    cursor: pointer;
}

.flashcard-container .flashcard-back { display: none; }
.flashcard-container.is-flipped .flashcard-front { display: none; }
.flashcard-container.is-flipped .flashcard-back { display: flex; animation: cardReveal .3s ease; }
@keyframes cardReveal { from { opacity: 0; transform: scale(.96); } to { opacity: 1; transform: none; } }

.flashcard-front, .flashcard-back {
    width: 100%;
    height: 100%;
    position: absolute;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden; /* Safari */
    display: flex;
    align-items: safe center;
    justify-content: safe center;
    padding: var(--spacing-xl);
    text-align: center;
    font-size: 1.5rem;
    border-radius: var(--border-radius-lg);
    background: var(--bg-base);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-md);
    overflow-y: auto;
    overflow-wrap: anywhere;
    white-space: pre-wrap;
}

.flashcard-back {
    background: color-mix(in srgb, var(--accent-primary) 6%, var(--bg-base));
}

.study-controls {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

/* SM-2 Quality Buttons */
.quality-buttons {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.sm2-btn {
    flex: 1;
    padding: 10px 4px;
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    color: white;
    border: none;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.sm2-btn:hover { transform: scale(1.05); }
.sm2-btn:active { transform: scale(0.95); }

.q1 { background: #dc2626; } /* Again */
.q3 { background: #d97706; } /* Hard */
.q4 { background: #16a34a; } /* Good */
.q5 { background: #0284c7; } /* Easy */
.sm2-btn small { display: block; margin-top: 2px; font-size: 0.68rem; font-weight: 500; opacity: .85; }

/* --- 5. ANALYTICS SPECIFICS --- */
.analytics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

.analytics-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
}
.analytics-controls > div { display: grid; gap: 5px; min-width: 150px; flex: 1; }
.analytics-controls label { color: var(--text-secondary); font-size: 0.82rem; font-weight: 600; }
.analytics-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--spacing-sm); margin-bottom: var(--spacing-md); }
.analytics-summary article { display: grid; gap: 6px; padding: 16px 18px; border: 1px solid var(--border-glass); border-radius: 14px; background: linear-gradient(135deg, color-mix(in srgb, var(--accent-primary) 6%, var(--bg-base)), var(--bg-glass)); }
.analytics-summary span, .chart-range-label { color: var(--text-secondary); font-size: 0.8rem; }
.analytics-summary strong { font-size: 1.6rem; font-variant-numeric: tabular-nums; letter-spacing: -.03em; }
.grade-progress-chart { display: flex; flex-direction: column; gap: 20px; height: 430px; padding: clamp(16px, 3vw, 28px); border-radius: 18px; }
.chart-plot { position: relative; min-height: 0; flex: 1; width: 100%; }
.chart-plot canvas { width: 100%; height: 100%; }
.chart-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--spacing-md); }
.chart-heading h3, .chart-heading p { margin: 0; }
.chart-heading p { margin-top: 4px; }
.chart-range-label { white-space: nowrap; padding: 6px 10px; border: 1px solid var(--border-glass); border-radius: 999px; background: var(--bg-base); }
.chart-empty-message { margin: auto; color: var(--text-secondary); text-align: center; }

.focus-sprint-widget .view-header { align-items: center; margin-bottom: var(--spacing-sm); }
.focus-sprint-widget .view-header h3, .focus-sprint-widget .view-header p { margin: 0; }
.focus-sprint-clock { color: var(--accent-primary); font: 600 1.45rem var(--font-mono); font-variant-numeric: tabular-nums; }
.focus-sprint-controls { display: grid; grid-template-columns: auto minmax(150px, 1fr) auto minmax(90px, 0.5fr) auto auto; gap: var(--spacing-sm); align-items: center; }
.focus-sprint-controls label { color: var(--text-secondary); font-size: 0.84rem; }
.focus-sprint-widget > p { margin: var(--spacing-sm) 0 0; }
.course-autocomplete { position: relative; }
.course-suggestions { position: absolute; z-index: var(--z-tooltip); top: calc(100% + 4px); left: 0; right: 0; max-height: 260px; overflow-y: auto; padding: 4px; border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-base); box-shadow: var(--shadow-lg); }
.course-suggestion { display: flex; width: 100%; flex-direction: column; align-items: flex-start; gap: 2px; padding: 9px 10px; border: 0; border-radius: 6px; background: transparent; color: var(--text-primary); text-align: left; cursor: pointer; }
.course-suggestion:hover, .course-suggestion[aria-selected="true"] { background: var(--bg-glass-hover); }
.course-suggestion span, .course-suggestion-empty, .form-hint { color: var(--text-secondary); font-size: 0.8rem; }
.course-suggestion-empty { margin: 0; padding: 10px; }
.form-hint { display: block; margin-top: 5px; }
body.compact-ui { --spacing-md: 13px; --spacing-lg: 16px; --spacing-xl: 20px; }
body.compact-ui .glass-card { padding: 14px; }

.community-deck-browser, .hosted-games-panel { min-width: 0; margin-bottom: var(--spacing-lg); }
.sidebar-coin-count { margin-left: auto; padding: 2px 7px; border: 1px solid color-mix(in srgb, #fbbf24 38%, transparent); border-radius: 999px; color: #fbbf24; font-size: 0.7rem; line-height: 1.5; white-space: nowrap; }
.sidebar-coin-count i { margin-left: 2px; }
.multiplayer-profile-button { display: flex; align-items: center; gap: 8px; max-width: 210px; min-width: 0; padding: 5px 10px 5px 6px; border: 1px solid var(--border-glass); border-radius: 999px; background: var(--bg-glass); color: var(--text-primary); cursor: pointer; }
.multiplayer-profile-button:hover { border-color: var(--accent-primary); background: var(--bg-glass-hover); }
.multiplayer-profile-button > span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.82rem; font-weight: 650; }
.multiplayer-avatar, .multiplayer-large-avatar, .shop-avatar, .leaderboard-avatar { display: inline-grid; place-items: center; flex: 0 0 auto; border-radius: 50%; background: color-mix(in srgb, var(--accent-primary) 20%, var(--bg-base)); }
.multiplayer-avatar { width: 30px; height: 30px; font-size: 1rem; }
.multiplayer-topline { display: flex; justify-content: space-between; align-items: center; gap: var(--spacing-md); margin-bottom: var(--spacing-md); }
.multiplayer-topline h2, .multiplayer-topline p { margin: 0; }
.multiplayer-topline p { margin-top: 4px; color: var(--text-secondary); }
.multiplayer-wallet { display: flex; align-items: center; gap: 7px; flex: 0 0 auto; padding: 10px 14px; border: 1px solid color-mix(in srgb, #fbbf24 42%, transparent); border-radius: 14px; background: color-mix(in srgb, #fbbf24 9%, var(--bg-glass)); color: #fbbf24; }
.multiplayer-wallet strong { font-size: 1.1rem; }
.multiplayer-wallet span { font-size: 0.78rem; }
.multiplayer-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(250px, 330px); gap: var(--spacing-md); align-items: start; }
.multiplayer-main, .multiplayer-side { display: grid; gap: var(--spacing-md); min-width: 0; }
.multiplayer-mode-picker { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--spacing-sm); margin: var(--spacing-md) 0; }
.multiplayer-mode { display: grid; justify-items: start; gap: 4px; min-width: 0; padding: 12px; border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass); color: var(--text-primary); text-align: left; cursor: pointer; }
.multiplayer-mode:hover, .multiplayer-mode.selected { border-color: var(--accent-primary); background: color-mix(in srgb, var(--accent-primary) 12%, var(--bg-glass)); box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent-primary) 25%, transparent); }
.multiplayer-mode strong { font-size: 0.88rem; }
.multiplayer-mode small { color: var(--text-secondary); font-size: 0.75rem; line-height: 1.3; }
.multiplayer-goals { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--spacing-sm); }
.multiplayer-goals label { min-width: 0; }
.multiplayer-arena { overflow: hidden; min-width: 0; margin: var(--spacing-md) 0; padding: var(--spacing-md); border: 1px solid var(--border-glass); border-radius: 14px; background: radial-gradient(ellipse at top, color-mix(in srgb, var(--game-accent, #38bdf8) 17%, #172338), #101827 78%); color: #f8fafc; }
#multiplayer-view[data-game-palette="ocean"] { --game-accent: #38bdf8; }
#multiplayer-view[data-game-palette="sunset"] { --game-accent: #fb7185; }
#multiplayer-view[data-game-palette="violet"] { --game-accent: #a78bfa; }
#multiplayer-view[data-game-palette="default"] { --game-accent: #6ee7b7; }
.arena-heading { display: flex; justify-content: space-between; gap: var(--spacing-sm); margin-bottom: 9px; color: #dbeafe; font-size: 0.82rem; }
.arena-heading span { color: #aabbd1; text-align: right; }
.arena-lanes { display: grid; gap: 8px; }
.arena-lane { display: grid; grid-template-columns: minmax(84px, 150px) minmax(0, 1fr); align-items: center; gap: 8px; }
.arena-player { overflow: hidden; color: #e2e8f0; font-size: 0.78rem; text-overflow: ellipsis; white-space: nowrap; }
.arena-track { position: relative; height: 20px; border: 1px solid #51647d; border-radius: 999px; background: repeating-linear-gradient(90deg, #1e293b 0 38px, #334155 39px 41px); }
.arena-track::after { position: absolute; top: 2px; right: 17%; width: 4px; height: 12px; border-radius: 2px; background: #fb7185; box-shadow: -36px 3px 0 -1px #fbbf24, -74px 0 0 -1px #38bdf8; content: ""; opacity: 0.8; }
.arena-progress { position: absolute; inset: 0 auto 0 0; max-width: 100%; border-radius: inherit; background: linear-gradient(90deg, color-mix(in srgb, var(--game-accent, #6ee7b7) 52%, #334155), var(--game-accent, #6ee7b7)); transition: width 450ms ease; }
.arena-runner { position: absolute; z-index: 1; top: 50%; transform: translate(-50%, -55%); font-size: 1.12rem; transition: left 450ms ease; }
.arena-event { margin-top: 9px; color: #cbd5e1; font-size: 0.78rem; }
.hosted-leaderboard { margin-top: var(--spacing-sm); border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass); }
.hosted-leaderboard summary { display: flex; align-items: center; gap: 7px; padding: 10px 12px; cursor: pointer; font-weight: 650; list-style: none; }
.hosted-leaderboard summary::-webkit-details-marker { display: none; }
.hosted-leaderboard summary::after { content: "▾"; margin-left: auto; color: var(--text-secondary); }
.hosted-leaderboard:not([open]) summary::after { content: "▸"; }
.hosted-leaderboard summary span { margin-left: auto; color: var(--text-secondary); font-size: 0.78rem; font-weight: 400; }
.hosted-room-players { margin: 0; padding: 0 10px 10px; list-style: none; }
.leaderboard-player { display: grid; grid-template-columns: 28px minmax(0, 1fr) auto auto; align-items: center; gap: 7px; margin-top: 5px; padding: 7px 8px; border-radius: 8px; background: var(--bg-glass-hover); }
.leaderboard-player.is-self { outline: 1px solid color-mix(in srgb, var(--accent-primary) 55%, transparent); }
.leaderboard-avatar { width: 26px; height: 26px; }
.leaderboard-name { min-width: 0; overflow-wrap: anywhere; }
.leaderboard-player strong { color: var(--accent-primary); font-size: 0.8rem; white-space: nowrap; }
.host-kick-btn { padding: 4px 7px; border: 1px solid var(--border-glass); border-radius: 6px; background: transparent; color: var(--status-danger); font-size: 0.72rem; cursor: pointer; }
.hosted-podium { display: flex; align-items: end; justify-content: center; gap: 8px; margin: var(--spacing-md) 0; }
.podium-place { display: grid; justify-items: center; gap: 5px; width: min(33%, 200px); min-width: 0; padding: 11px 8px; border: 1px solid var(--border-glass); border-radius: 10px 10px 5px 5px; background: var(--bg-glass-hover); text-align: center; }
.podium-place span { font-size: 1.5rem; }
.podium-place strong, .podium-place small { overflow-wrap: anywhere; }
.podium-place small { color: var(--text-secondary); font-size: 0.72rem; }
.podium-place.place-1 { min-height: 124px; border-color: #fbbf24; background: color-mix(in srgb, #fbbf24 13%, var(--bg-glass)); }
.podium-place.place-2 { min-height: 100px; }
.podium-place.place-3 { min-height: 82px; }
.multiplayer-player-card { display: grid; justify-items: center; text-align: center; }
.multiplayer-player-card h3 { margin: 7px 0 0; overflow-wrap: anywhere; }
.multiplayer-player-card p { margin: 6px 0 0; color: var(--text-secondary); }
.multiplayer-player-card p strong { color: var(--text-primary); }
.multiplayer-large-avatar { width: 68px; height: 68px; font-size: 2rem; }
.multiplayer-shop .view-header { align-items: center; }
.multiplayer-shop .view-header h3, .multiplayer-shop .view-header p { margin: 0; }
.multiplayer-shop .view-header p { margin-top: 3px; color: var(--text-secondary); font-size: 0.78rem; }
.multiplayer-shop-items { display: grid; gap: 7px; }
.multiplayer-shop-item { display: grid; grid-template-columns: 32px minmax(0, 1fr) auto; align-items: center; gap: 8px; padding: 8px; border: 1px solid var(--border-glass); border-radius: 9px; background: var(--bg-glass); }
.multiplayer-shop-item > div { display: grid; min-width: 0; gap: 3px; }
.multiplayer-shop-item small { color: var(--text-secondary); font-size: 0.7rem; }
.multiplayer-shop-item .secondary-btn { min-height: 32px; padding: 5px 8px; font-size: 0.72rem; white-space: nowrap; }
.shop-avatar { width: 30px; height: 30px; font-size: 1.15rem; }
.shop-palette { width: 27px; height: 27px; border: 1px solid var(--border-glass); border-radius: 50%; background: #94a3b8; }
.shop-preview .shop-palette { position: relative; overflow: hidden; }
.shop-preview .shop-palette::before { content: ''; position: absolute; inset: 15% 12%; border: 1px solid #fff8; border-radius: 7px; background: #111827a6; }
.shop-preview .shop-palette::after { content: ''; position: absolute; left: 24%; right: 24%; top: 33%; height: 12%; border-radius: 3px; background: #fff9; box-shadow: 0 17px 0 -2px #fff5; }
.shop-palette.ocean { background: linear-gradient(135deg, #38bdf8, #075985); }
.shop-palette.sunset { background: linear-gradient(135deg, #fb7185, #c2410c); }
.shop-palette.violet { background: linear-gradient(135deg, #c4b5fd, #6d28d9); }
.waiting-arcade-card { display: grid; gap: var(--spacing-sm); min-width: 0; }
.waiting-arcade-card h3, .waiting-arcade-card p { margin: 0; }
.waiting-arcade-card p { margin-top: 3px; color: var(--text-secondary); font-size: 0.84rem; }
#waiting-runner-canvas { display: block; width: 100%; max-width: 100%; height: auto; border: 1px solid var(--border-glass); border-radius: 10px; cursor: pointer; touch-action: manipulation; }
.waiting-runner-meta { display: flex; justify-content: space-between; align-items: center; color: var(--text-secondary); font-size: 0.84rem; }
.waiting-runner-meta strong { color: var(--text-primary); }
.community-heading, .hosted-room-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--spacing-md); }
.community-heading h3, .community-heading p, .hosted-room-heading h4, .hosted-room-heading p { margin: 0; }
.community-heading p, .community-status, .hosted-room-meta, .hosted-room-status { color: var(--text-secondary); font-size: 0.88rem; }
.community-heading p { margin-top: 4px; }
.community-badge { flex: 0 0 auto; padding: 5px 9px; border: 1px solid var(--border-glass); border-radius: 999px; color: var(--accent-primary); font-size: 0.78rem; font-weight: 600; }
.community-search-form { display: flex; gap: var(--spacing-sm); margin-top: var(--spacing-md); }
.community-search-form input { flex: 1; min-width: 0; }
.community-status { min-height: 1.4em; margin: var(--spacing-sm) 0; }
.community-deck-results { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: var(--spacing-sm); }
.community-deck-card { display: flex; min-width: 0; justify-content: space-between; align-items: center; gap: var(--spacing-sm); padding: var(--spacing-sm) var(--spacing-md); border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass); }
.community-deck-card > div { min-width: 0; }
.community-deck-card strong, .community-deck-card p { overflow-wrap: anywhere; }
.community-deck-card p { margin: 2px 0; color: var(--text-secondary); font-size: 0.84rem; }
.community-deck-card small, .deck-sharing-hint { color: var(--text-muted); font-size: 0.76rem; }
.community-deck-card button { flex: 0 0 auto; }
.community-deck-added { display: inline-flex; align-items: center; gap: 6px; color: var(--text-secondary); font-size: 0.85rem; font-weight: 600; }
.deck-sharing-hint { display: block; width: 100%; order: 5; }
#deck-grid .actions { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); }
#deck-grid .actions button { flex: 1 1 auto; min-width: 0; white-space: nowrap; }
#deck-grid .glass-card { min-width: 0; overflow-wrap: anywhere; }
.hosted-game-setup { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--spacing-md); margin-top: var(--spacing-md); }
.hosted-game-form { display: grid; align-content: start; gap: var(--spacing-sm); min-width: 0; padding: var(--spacing-md); border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass); }
.hosted-game-form h4 { margin: 0; }
.hosted-game-form label { display: grid; gap: 5px; color: var(--text-secondary); font-size: 0.84rem; font-weight: 600; }
.hosted-game-form button { justify-self: start; }
.hosted-game-room { min-width: 0; padding: var(--spacing-md); border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass); }
.hosted-room-heading { align-items: center; }
.hosted-room-code { display: grid; gap: 2px; justify-items: end; }
.hosted-room-code span { color: var(--text-secondary); font-size: 0.75rem; }
.hosted-room-code strong { color: var(--accent-primary); font: 700 1.35rem var(--font-mono); letter-spacing: 0.12em; }
.hosted-room-players { display: grid; gap: 4px; margin: var(--spacing-sm) 0; padding-left: 28px; }
.hosted-room-players li { padding: 5px 8px; border-radius: 6px; background: var(--bg-glass-hover); }
.hosted-room-players li strong { float: right; color: var(--accent-primary); font-size: 0.82rem; }
.hosted-room-question { margin-top: var(--spacing-md); padding-top: var(--spacing-md); border-top: 1px solid var(--border-glass); }
.hosted-room-question > p:first-child { color: var(--text-secondary); font-size: 0.85rem; }
.hosted-room-question h4 { margin: var(--spacing-sm) 0; overflow-wrap: anywhere; }
.hosted-answer-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--spacing-sm); }
.hosted-answer-btn { min-width: 0; min-height: 48px; overflow-wrap: anywhere; }
.hosted-room-actions { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); margin-top: var(--spacing-md); }

@media (max-width: 768px) {
    html, body { width: 100%; max-width: 100%; overflow-x: clip; }
    #app-container, #main-content, #view-container, .view { width: 100%; max-width: 100%; min-width: 0; }
    #view-container { padding: var(--spacing-sm); }
    .view, .dashboard-grid > *, .planner-grid > *, .analytics-grid > *, .calendar-layout > *, .class-detail-grid > * { min-width: 0; }
    .eisenhower-matrix { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto; min-height: 0; }
    .matrix-quadrant ul { max-height: 240px; }
    .analytics-grid, .analytics-grid > .chart-container, .chart-container { min-width: 0; max-width: 100%; }
    .chart-container canvas { display: block; max-width: 100%; }
    .arcade-menu { grid-template-columns: minmax(0, 1fr); }
    .multiplayer-layout { grid-template-columns: minmax(0, 1fr); }
    .multiplayer-side { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
    .multiplayer-mode-picker { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .community-deck-card { align-items: flex-start; flex-direction: column; }
    .community-deck-card button { width: 100%; }
    .modal-overlay { width: 100%; max-width: 100%; }
    #sound-drawer { right: 0; left: 0; width: 100%; max-width: 100%; }
}

@media (max-width: 480px) {
    #top-header { width: 100%; min-width: 0; }
    .header-left, .header-right { min-width: 0; }
    .view-header h2 { overflow-wrap: anywhere; }
    .hosted-game-setup { grid-template-columns: minmax(0, 1fr); }
    .community-heading { flex-direction: column; }
    .community-search-form { align-items: stretch; flex-direction: column; }
    .community-search-form button { width: 100%; }
    .hosted-room-heading { align-items: flex-start; }
    .hosted-room-players li strong { float: none; display: block; }
    .hosted-answer-options { grid-template-columns: minmax(0, 1fr); }
    .multiplayer-topline { align-items: flex-start; flex-direction: column; }
    .multiplayer-wallet { align-self: flex-start; }
    .multiplayer-side { grid-template-columns: minmax(0, 1fr); }
    .multiplayer-mode { padding: 9px; }
    .multiplayer-goals { grid-template-columns: minmax(0, 1fr); }
    .leaderboard-player { grid-template-columns: 26px minmax(0, 1fr) auto; }
    .host-kick-btn { grid-column: 2 / -1; justify-self: end; }
    .multiplayer-profile-button { max-width: 150px; }
    .multiplayer-profile-button > span:last-child { max-width: 78px; }
}

@media (max-width: 640px) {
    .analytics-summary { grid-template-columns: 1fr; }
    .focus-sprint-controls { grid-template-columns: auto 1fr; }
    .focus-sprint-controls .primary-btn, .focus-sprint-controls .secondary-btn { grid-column: span 1; }
    .daily-study-topline, .daily-study-footer, .study-leaderboard-heading { align-items: flex-start; flex-direction: column; }
    .study-leaderboard-tabs { width: 100%; }
    .study-leaderboard-tabs button { flex: 1; }
    .study-leaderboard-row { grid-template-columns: 30px minmax(0, 1fr); }
    .study-leaderboard-row > span:last-child { grid-column: 2; }
    .chart-heading { flex-direction: column; }
    .chart-range-label { padding-top: 0; }
}

/* Multiplayer arcade */
.multiplayer-tabs { display: flex; gap: 6px; margin-bottom: var(--spacing-md); padding: 4px; border: 1px solid var(--border-glass); border-radius: 12px; background: var(--bg-base); }
.multiplayer-tab { flex: 1; min-width: 0; padding: 10px 12px; border: 0; border-radius: 9px; background: transparent; color: var(--text-secondary); font-weight: 700; cursor: pointer; }
.multiplayer-tab.selected { background: color-mix(in srgb, var(--accent-primary) 18%, var(--bg-glass)); color: var(--text-primary); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent-primary) 36%, transparent); }
.multiplayer-flow { min-width: 0; }
.multiplayer-mode-picker { grid-template-columns: repeat(auto-fit, minmax(min(145px, 100%), 1fr)); }
.multiplayer-mode { overflow: hidden; position: relative; }
.multiplayer-mode .mode-preview-canvas { display: block; width: 100%; height: 72px; margin-bottom: 5px; border-radius: 9px; background: #101a2e; object-fit: contain; }
.multiplayer-preview, .multiplayer-arena { overflow: hidden; min-width: 0; border: 1px solid var(--border-glass); border-radius: 14px; background: #101827; }
.multiplayer-preview { margin-top: var(--spacing-md); }
.preview-heading, .multiplayer-scene-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 11px 14px; color: #f8fafc; }
.preview-heading > div { display: grid; gap: 3px; }
#preview-practice-btn { flex: 0 0 auto; white-space: nowrap; padding: 8px 12px; font-size: .82rem; }
@media (max-width: 520px) { .preview-heading { flex-wrap: wrap; } #preview-practice-btn { width: 100%; justify-content: center; } }
.preview-heading span, .multiplayer-scene-head span { color: #b9c7d8; font-size: .78rem; }
#multiplayer-game-canvas, #multiplayer-room-canvas { display: block; width: 100%; height: auto; aspect-ratio: 2.5 / 1; }
.multiplayer-arena { padding: 0; }
.multiplayer-scene-head { padding-bottom: 8px; }
.multiplayer-scene-feed { min-height: 38px; padding: 10px 14px; background: rgba(255,255,255,.045); color: #cbd5e1; font-size: .84rem; }
.multiplayer-scene-feed.feed-correct { color: #94f4bd; }
.multiplayer-scene-feed.feed-miss { color: #ffaaa1; }
.player-avatar { display: inline-grid; place-items: center; flex: 0 0 auto; width: 32px; height: 32px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; background: radial-gradient(circle at 35% 25%, #fff8 0 7%, #6c80a4 8% 39%, #29334a 75%); color: #f8fafc; box-shadow: 0 2px 8px #0005; }
.player-avatar i { font-size: .9rem; }
.player-avatar-large { width: 76px; height: 76px; font-size: 1.6rem; }
.hosted-room-players li { grid-template-columns: 34px minmax(0, 1fr) auto auto; align-items: center; }
.leaderboard-name { min-width: 0; overflow-wrap: anywhere; }
.leaderboard-stat { display: grid; text-align: right; }
.leaderboard-stat strong { font-size: .85rem; }
.leaderboard-stat small { color: var(--text-secondary); font-size: .68rem; white-space: nowrap; }
.host-kick-btn { padding: 5px 8px; }
.waiting-arcade-card { min-width: 0; overflow: hidden; }
.waiting-arcade-card h3, .waiting-arcade-card p { margin-top: 0; }
#waiting-runner-canvas { display: block; width: 100%; max-width: 520px; height: auto; margin: 12px auto; border-radius: 12px; cursor: crosshair; touch-action: none; box-shadow: 0 12px 32px #0d1326aa; }
.waiting-runner-meta { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.waiting-runner-meta strong { color: var(--accent-primary); font-variant-numeric: tabular-nums; }
.waiting-practice { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; color: var(--text-secondary); font-size: 0.84rem; margin-top: 10px; }

.shop-category-title { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin: 14px 0 6px; font-size: 0.82rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-secondary); }
.char-avatar { position: relative; border: 2px solid color-mix(in srgb, var(--accent-primary) 55%, transparent); background: color-mix(in srgb, var(--accent-primary) 16%, var(--bg-base)); overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,.25); }
.char-avatar::after { content: none; }
/* Wrappers only hold the generated character avatar, so they must not draw a second circle */
#multiplayer-header-avatar, #multiplayer-large-avatar { background: none; border: 0; box-shadow: none; border-radius: 0; width: auto; height: auto; display: inline-flex; }
#multiplayer-header-avatar > .char-avatar { width: 32px; height: 32px; }
#multiplayer-large-avatar { margin: 0 auto 10px; }
#multiplayer-large-avatar > .char-avatar { width: 96px; height: 96px; }
.multiplayer-player-card { display: grid; justify-items: center; text-align: center; gap: 6px; }
.multiplayer-player-card h3, .multiplayer-player-card p { margin: 0; }
.char-avatar img, .char-avatar canvas { width: 100%; height: 100%; object-fit: contain; transform: none; image-rendering: auto; pointer-events: none; display: block; }
.char-avatar { border-radius: 30%; min-width: 32px; min-height: 32px; flex-shrink: 0; }
.char-avatar.player-avatar-large { width: 96px; height: 96px; border-radius: 22px; }
.multiplayer-shop-item .char-avatar, .multiplayer-shop-item .shop-palette { width: 46px; height: 46px; border-radius: 12px; }
.multiplayer-shop-item:has(.char-avatar), .multiplayer-shop-item:has(.shop-palette) { grid-template-columns: 46px minmax(0, 1fr) auto; }
.pet-locked b { font-size: 1.4rem; color: var(--text-secondary); }
.shop-tabs { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 8px; }
.shop-tab { padding: 6px 10px; border: 1px solid var(--border-glass); border-radius: 999px; background: var(--bg-glass); color: var(--text-secondary); font: inherit; font-size: 0.74rem; font-weight: 700; cursor: pointer; }
.shop-grid { display: grid; gap: 7px; max-height: 560px; overflow-y: auto; padding-right: 2px; }
.shop-grid .shop-category-title { margin: 4px 0; }
.rarity-label { text-transform: capitalize; font-weight: 800; }
.rarity-common { --rarity: #94a3b8; }
.rarity-uncommon { --rarity: #4ade80; }
.rarity-rare { --rarity: #38bdf8; }
.rarity-epic { --rarity: #c084fc; }
.rarity-legendary { --rarity: #fbbf24; }
.rarity-mythic { --rarity: #f43f5e; }
.multiplayer-shop-item.rarity-mythic { background: linear-gradient(110deg, rgba(244,63,94,.14), rgba(168,85,247,.14), rgba(34,211,238,.12)); box-shadow: 0 0 14px rgba(244,63,94,.25); }
.shop-rarity-title.rarity-mythic, .multiplayer-shop-item.rarity-mythic .rarity-label { background: linear-gradient(90deg, #f43f5e, #a855f7, #22d3ee); -webkit-background-clip: text; background-clip: text; color: transparent; }
.multiplayer-shop-item[class*="rarity-"] { border-left: 4px solid var(--rarity); }
.multiplayer-shop-item[class*="rarity-"] .rarity-label { color: var(--rarity); }
.multiplayer-shop-item.equipped { box-shadow: inset 0 0 0 1px var(--accent-primary); }
.box-card .box-details { display: grid; min-width: 0; gap: 4px; align-content: center; }
.box-card .box-details > small { color: var(--text-secondary); }
.box-chances { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 2px; }
.box-chances > span { display: inline-flex; align-items: center; gap: 3px; padding: 2px 5px; border: 1px solid color-mix(in srgb, var(--rarity) 32%, transparent); border-radius: 999px; background: color-mix(in srgb, var(--rarity) 10%, transparent); color: var(--rarity); font-size: .63rem; line-height: 1.35; text-transform: capitalize; white-space: nowrap; }
.box-chances b { font-variant-numeric: tabular-nums; }
.box-reveal { display: flex; align-items: center; gap: 12px; padding: 12px; border: 2px solid var(--rarity, #94a3b8); border-radius: 14px; background: var(--bg-glass); animation: boxPop .5s cubic-bezier(.2, 1.4, .4, 1); }
.box-reveal div { display: grid; gap: 2px; }
.box-reveal > div { min-width: 0; overflow-wrap: anywhere; }
.box-reveal small { text-transform: uppercase; letter-spacing: .08em; font-weight: 800; color: var(--rarity); }
.box-reveal span { font-size: 0.78rem; color: var(--text-secondary); }
@keyframes boxPop { from { transform: scale(.6) rotate(-4deg); opacity: 0; } to { transform: none; opacity: 1; } }
.shop-unequip { padding: 3px 9px; font-size: 0.7rem; text-transform: none; letter-spacing: 0; }

/* Full-screen multiplayer game */
body.mpg-active { overflow: hidden; }
.mpg-overlay { position: fixed; inset: 0; z-index: 100000; background: #05070f; color: #f8fafc; font-family: system-ui, sans-serif; user-select: none; -webkit-user-select: none; }
.mpg-overlay .hidden { display: none !important; }
.mpg-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; cursor: crosshair; touch-action: none; }
.mpg-top { position: absolute; top: 10px; left: 12px; right: 12px; display: flex; align-items: center; justify-content: space-between; gap: 10px; pointer-events: none; }
.mpg-top > * { pointer-events: auto; }
.mpg-chip { display: flex; flex-direction: column; gap: 2px; padding: 8px 14px; border-radius: 12px; background: rgba(8,12,24,.72); border: 1px solid rgba(255,255,255,.14); backdrop-filter: blur(6px); }
.mpg-chip strong { font-size: .95rem; }
.mpg-chip span { font-size: .78rem; color: #cbd5e1; }
.mpg-practice-indicator { color: #86efac; font-size: .66rem; font-weight: 700; line-height: 1.2; white-space: nowrap; }
.mpg-timer { padding: 8px 18px; border-radius: 999px; background: rgba(8,12,24,.72); border: 1px solid rgba(255,255,255,.14); font-weight: 800; font-variant-numeric: tabular-nums; font-size: 1.05rem; }
.mpg-actions { display: flex; gap: 8px; }
.mpg-actions button, .mpg-q-skip, .mpg-exit { cursor: pointer; border: 1px solid rgba(255,255,255,.25); border-radius: 10px; padding: 8px 14px; font-weight: 700; color: #fff; background: rgba(30,41,59,.85); }
.mpg-actions button:hover, .mpg-q-skip:hover, .mpg-exit:hover { background: rgba(71,85,105,.95); }
.mpg-end { background: rgba(185,28,28,.85) !important; }
.mpg-board { position: absolute; top: 70px; right: 12px; margin: 0; padding: 8px 10px; list-style: none; width: 210px; border-radius: 12px; background: rgba(8,12,24,.62); border: 1px solid rgba(255,255,255,.12); display: grid; gap: 4px; pointer-events: none; }
.mpg-board li { display: grid; grid-template-columns: 10px 1fr auto; gap: 8px; align-items: center; font-size: .8rem; }
.mpg-board li i { width: 10px; height: 10px; border-radius: 50%; }
.mpg-board li.me { color: #fde047; font-weight: 800; }
.mpg-score { position: absolute; left: 12px; bottom: 12px; padding: 8px 16px; border-radius: 12px; background: rgba(8,12,24,.72); border: 1px solid rgba(255,255,255,.14); display: flex; flex-direction: column; pointer-events: none; }
.mpg-score span { font-size: .68rem; text-transform: uppercase; letter-spacing: .08em; color: #94a3b8; }
.mpg-score strong { font-size: 1.5rem; color: #fde047; font-variant-numeric: tabular-nums; }
.mpg-meter { position: absolute; left: 12px; bottom: 82px; width: 220px; padding: 10px 12px; border-radius: 12px; background: rgba(8,12,24,.78); border: 1px solid rgba(255,255,255,.16); display: grid; gap: 6px; }
.mpg-meter-head { display: flex; justify-content: space-between; font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: #cbd5e1; }
@keyframes mpg-blink { 50% { opacity: .45; } }
.mpg-recharge { cursor: pointer; border: 1px solid rgba(99,102,241,.7); background: #4338ca; color: #fff; border-radius: 9px; padding: 7px 10px; font-weight: 700; font-size: .78rem; }
.mpg-recharge:hover { background: #4f46e5; }
.mpg-recharge kbd { background: rgba(255,255,255,.2); padding: 1px 6px; border-radius: 5px; margin-left: 4px; }
.mpg-hint { position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%); max-width: min(720px, 70vw); padding: 7px 16px; border-radius: 999px; background: rgba(8,12,24,.68); font-size: .8rem; color: #e2e8f0; text-align: center; pointer-events: none; }
.mpg-hint:empty { display: none; }
.mpg-toasts { position: absolute; top: 74px; left: 50%; transform: translateX(-50%); display: grid; gap: 6px; justify-items: center; pointer-events: none; }
.mpg-toasts div { padding: 7px 16px; border-radius: 999px; background: rgba(8,12,24,.88); border: 2px solid #e2e8f0; font-weight: 700; font-size: .85rem; animation: mpg-pop .25s ease-out; }
@keyframes mpg-pop { from { transform: translateY(-8px) scale(.9); opacity: 0; } to { transform: none; opacity: 1; } }
.mpg-countdown { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: clamp(5rem, 18vw, 10rem); font-weight: 900; color: #fff; text-shadow: 0 6px 40px rgba(99,102,241,.9); pointer-events: none; }
.mpg-question { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: rgba(2,6,16,.62); backdrop-filter: blur(3px); z-index: 5; }
.mpg-q-card { width: min(640px, 92vw); padding: 22px; border-radius: 18px; background: #101a33; border: 2px solid #6366f1; box-shadow: 0 20px 60px rgba(0,0,0,.6); display: grid; gap: 12px; }
.mpg-q-card small { text-transform: uppercase; letter-spacing: .1em; color: #a5b4fc; font-weight: 800; }
.mpg-q-prompt { margin: 0; font-size: 1.35rem; line-height: 1.3; }
.mpg-q-options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mpg-q-options button { display: flex; align-items: center; gap: 10px; text-align: left; padding: 12px; min-height: 56px; border-radius: 12px; border: 2px solid rgba(255,255,255,.18); background: #1b2747; color: #fff; font-weight: 600; cursor: pointer; }
.mpg-q-options button:hover { border-color: #818cf8; background: #25346a; }
.mpg-q-options kbd { flex: none; width: 24px; height: 24px; display: grid; place-items: center; border-radius: 6px; background: rgba(255,255,255,.14); font-size: .75rem; }
.mpg-q-options button.right { background: #166534; border-color: #4ade80; }
.mpg-q-options button.wrong { background: #7f1d1d; border-color: #f87171; }
.mpg-q-result { margin: 0; min-height: 1.3em; font-weight: 800; }
.mpg-q-skip { justify-self: start; font-size: .78rem; padding: 5px 12px; }
.mpg-results { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: rgba(2,6,16,.8); z-index: 6; }
.mpg-results-card { width: min(520px, 92vw); padding: 24px; border-radius: 20px; background: #101a33; border: 2px solid #fbbf24; display: grid; gap: 10px; text-align: center; }
.mpg-results-card small { text-transform: uppercase; letter-spacing: .12em; color: #fbbf24; font-weight: 800; }
.mpg-results-card h2 { margin: 0; font-size: 1.8rem; }
.mpg-results-card { max-height: 90dvh; overflow-y: auto; }
.mpg-summary { text-align: left; border-top: 1px solid #ffffff26; padding-top: 10px; }
.mpg-summary summary { cursor: pointer; padding: 10px 0; font-weight: 700; }
.game-answer-list { padding: 0; list-style: none; display: grid; gap: 8px; }
.game-answer-list > li { display: grid; grid-template-columns: 1fr; gap: 5px; padding: 8px 10px; overflow-wrap: anywhere; background: var(--bg-glass-hover); border-radius: 8px; }
.mpg-summary .game-answer-list > li { background: rgba(255,255,255,.06); }
.saved-game-summary { margin-top: 8px; }
.saved-game-summary summary { cursor: pointer; padding: 8px 0; font-weight: 600; }
.mpg-answer-right { border-left: 3px solid #4ade80; }
.mpg-answer-wrong { border-left: 3px solid #f87171; }
.mpg-answer-skip { border-left: 3px solid #94a3b8; }
.mpg-audio-settings { position: relative; }
.mpg-audio-settings summary { cursor: pointer; padding: 8px 10px; border: 1px solid #ffffff40; border-radius: 9px; background: #12221e; color: #f8fafc; }
.mpg-audio-panel { position: absolute; z-index: 8; top: 100%; right: 0; width: min(260px, 80vw); padding: 14px; display: grid; gap: 14px; border: 1px solid #ffffff40; border-radius: 12px; background: #12221e; box-shadow: 0 8px 24px #0008; }
.mpg-audio-panel label { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: .85rem; }
.mpg-audio-panel input[type="range"] { width: 100%; accent-color: #70e2c0; }
.mpg-results-card ol { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; text-align: left; }
.mpg-results-card li { display: grid; gap: 8px; align-items: center; padding: 8px 10px; border-radius: 10px; background: rgba(255,255,255,.06); }
.mpg-results-card ol > li { grid-template-columns: 24px 28px minmax(0, 1fr) auto auto; }
.mpg-results-card li.me { background: rgba(251,191,36,.18); }
.mpg-results-card li i { width: 10px; height: 10px; border-radius: 50%; }
.mpg-results-card li em { color: #fde047; font-style: normal; font-weight: 800; min-width: 74px; text-align: right; }
.mpg-results-card .rank { font-weight: 900; color: #94a3b8; }
.mpg-results-card p { margin: 0; color: #94a3b8; font-size: .85rem; }
@media (max-width: 700px) { .mpg-board { display: none; } .mpg-q-options { grid-template-columns: 1fr; } }
.scheme-option { position: relative; }
.scheme-option .scheme-lock-note { display: block; color: var(--text-secondary); font-size: .68rem; }
.scheme-option.scheme-locked { cursor: not-allowed; opacity: .58; }
.scheme-option.selected .scheme-lock-note { color: var(--accent-primary); }
.multiplayer-player-card { display: grid; justify-items: center; text-align: center; }
.multiplayer-player-card h3 { margin: 8px 0 0; }
.multiplayer-player-card p { margin: 4px 0 0; color: var(--text-secondary); }
.podium-rank { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 12px; background: color-mix(in srgb, var(--accent-primary) 20%, var(--bg-base)); font-weight: 800; font-variant-numeric: tabular-nums; }
.place-1 .podium-rank { background: linear-gradient(135deg, #ffe495, #d98c31); color: #412b15; }
.place-2 .podium-rank { background: linear-gradient(135deg, #e6edf8, #899ab3); color: #1f2c3c; }
.place-3 .podium-rank { background: linear-gradient(135deg, #e7ad7e, #9c593c); color: #fff4e6; }
.hosted-game-room.host-view .hosted-room-status { color: var(--accent-primary); }
.game-action-picker { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(150px, 100%), 1fr)); gap: 8px; margin: 10px 0 14px; }
.game-action-heading { grid-column: 1 / -1; color: var(--text-secondary); font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.game-action-option { display: grid; justify-items: start; gap: 4px; min-width: 0; padding: 10px 12px; border: 1px solid var(--border-glass); border-radius: 10px; background: var(--bg-base); color: var(--text-primary); text-align: left; cursor: pointer; }
.game-action-option:hover, .game-action-option.selected { border-color: var(--accent-primary); background: color-mix(in srgb, var(--accent-primary) 13%, var(--bg-glass)); }
.game-action-option:disabled { cursor: default; }
.game-action-option strong { font-size: .84rem; }
.game-action-option small { color: var(--text-secondary); font-size: .73rem; line-height: 1.35; }
.game-action-option.selected::before { content: "SELECTED MOVE"; color: var(--accent-primary); font-size: .62rem; font-weight: 800; letter-spacing: .06em; }
.game-action-option.selected strong { order: 1; }
.game-action-option.selected small { order: 2; }

@media (max-width: 680px) {
    .multiplayer-layout { grid-template-columns: minmax(0, 1fr); }
    .multiplayer-side { grid-template-columns: minmax(0, 1fr); }
    .multiplayer-mode-picker { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .hosted-room-players li { grid-template-columns: 30px minmax(0, 1fr) auto; }
    .leaderboard-stat { grid-column: 2 / -1; grid-row: 2; justify-self: start; display: flex; gap: 5px; text-align: left; }
    .leaderboard-stat small { white-space: normal; }
    .host-kick-btn { grid-column: 3; grid-row: 1; }
    .multiplayer-scene-head { align-items: flex-start; flex-direction: column; gap: 3px; }
    #multiplayer-game-canvas, #multiplayer-room-canvas { aspect-ratio: 1.55 / 1; }
}

/* --- 6. EXAM ARCADE SPECIFICS --- */
.arcade-menu {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
    gap: var(--spacing-lg);
}

.arcade-game-card {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.game-icon {
    font-size: 3rem;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-md);
}

.arcade-game-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

#arcade-canvas-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--bg-base);
    padding: var(--spacing-md);
}

.arcade-header {
    width: 100%;
    max-width: 800px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    color: var(--accent-primary);
    font-family: var(--font-mono);
}

.arcade-header h3 { color: inherit; margin: 0; }
.arcade-header .icon-btn { color: var(--accent-primary); }
.arcade-header .icon-btn:hover { background: color-mix(in srgb, var(--accent-primary) 16%, transparent); }

#game-canvas {
    background-color: #121a16;
    border: 2px solid var(--border-glass);
    border-radius: var(--border-radius-sm);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.8);
    max-width: 100%;
    height: auto;
}

/* --- FORMS & MODALS --- */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.row-group {
    display: flex;
    gap: var(--spacing-md);
}

.half-width {
    flex: 1;
}

/* Modal Overlay & Animations */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: var(--z-modal-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity var(--transition-fast);
}

.modal-overlay.hidden {
    display: none;
    opacity: 0;
}

.modal-content {
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    z-index: var(--z-modal);
    transform: scale(1);
    transition: transform var(--transition-fast);
}

.modal-overlay.hidden .modal-content {
    transform: scale(0.95);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: var(--spacing-sm);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--border-glass);
    padding-top: var(--spacing-md);
}

/* Specific Modals */
#deck-editor-modal { max-width: 760px; }
.deck-editor-toolbar { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.deck-editor-toolbar input { flex: 1 1 200px; min-width: 0; }
#deck-editor-count { color: var(--text-secondary); margin: 12px 0; }
#deck-editor-cards { display: grid; gap: 10px; max-height: 42vh; overflow-y: auto; }
.deck-editor-card { padding: 12px; border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); }
.deck-editor-card strong, .deck-editor-card p { display: block; white-space: pre-wrap; overflow-wrap: anywhere; }
.deck-editor-card p { color: var(--text-secondary); margin: 6px 0; }
.deck-editor-card .actions { display: flex; gap: 8px; justify-content: flex-end; }

.solver-results-box {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: color-mix(in srgb, var(--accent-primary) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent-primary) 35%, transparent);
    border-radius: var(--border-radius-sm);
    text-align: center;
}

.backup-section {
    margin-bottom: var(--spacing-lg);
}

.divider {
    border: 0;
    height: 1px;
    background: var(--border-glass);
    margin: var(--spacing-lg) 0;
}

.danger-zone {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--border-radius-sm);
    background: rgba(239, 68, 68, 0.05);
}

.danger-zone h4 { color: var(--status-danger); }

/* --- FOCUS & SOUND DRAWER --- */
#sound-drawer {
    position: fixed;
    bottom: 0;
    right: 24px;
    width: 300px;
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    border-bottom: none;
    z-index: var(--z-drawer);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

#sound-drawer.collapsed {
    transform: translateY(calc(100% - 50px)); /* Hide content, show header */
}

.drawer-header {
    padding: 12px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-glass);
    cursor: pointer;
}

.drawer-header h3 {
    margin: 0;
    font-size: 1rem;
}

.drawer-content {
    padding: var(--spacing-md);
}

.mixer-channel {
    margin-bottom: var(--spacing-md);
}

.mixer-channel:last-child {
    margin-bottom: 0;
}

.mixer-channel label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}
.mixer-channel label output { float: right; color: var(--accent-primary); font-variant-numeric: tabular-nums; }
#drawer-toggle-btn[aria-expanded="true"] { border-color: var(--accent-primary); }
#close-drawer-btn { border: 1px solid var(--border-glass); }

/* Custom Range Input (Slider) */
input[type=range] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    background: transparent;
    border: none;
    padding: 0;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    height: 16px;
    width: 16px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: pointer;
    margin-top: -6px; /* Offset to center thumb on track */
    box-shadow: 0 0 5px rgba(0,0,0,0.5);
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 4px;
    cursor: pointer;
    background: var(--bg-glass-hover);
    border-radius: 2px;
}

.true-false-statement {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    border-left: 3px solid var(--accent-primary);
    border-radius: var(--border-radius-sm);
    background: var(--bg-glass-hover);
    font-size: 1.1rem;
}

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 1024px) {
    .analytics-grid {
        grid-template-columns: 1fr;
    }

    .class-detail-grid, .calendar-layout { grid-template-columns: 1fr; }
    .schedule-pattern-headings, .schedule-course-row { grid-template-columns: minmax(100px, 1.1fr) repeat(3, minmax(90px, 1fr)); gap: var(--spacing-sm); }
    .calendar-day, .calendar-day-empty { min-height: 56px; padding: 5px; }
    .calendar-day small { font-size: 0.62rem; }
    .memory-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .category-add-form { flex-wrap: wrap; }
    .scenario-toolbar { grid-template-columns: auto minmax(120px, 1fr) auto minmax(150px, 1fr); }
    .scenario-toolbar #new-grade-scenario-btn, .scenario-toolbar #create-grade-scenario-btn, .scenario-toolbar #delete-grade-scenario-btn { grid-row: 2; }
    .scenario-assignment-form { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
    .schedule-pattern-headings, .schedule-course-row { grid-template-columns: minmax(100px, 1fr) repeat(3, minmax(76px, 0.8fr)); gap: 5px; }
    .schedule-pattern-headings { font-size: 0.7rem; }
    .schedule-course-row strong { font-size: 0.8rem; }
    .schedule-actions, .class-focus-panel { align-items: stretch; flex-direction: column; }
    .calendar-schedule p { flex-direction: column; gap: 0; }
    .calendar-schedule small { text-align: left; }
}

@media (max-width: 768px) {
    #app-container {
        flex-direction: column;
        height: auto;
        min-height: 100dvh;
        overflow: visible;
    }
    
    #sidebar {
        position: relative;
        top: auto;
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-glass);
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .sidebar-collapsed #sidebar { width: 100%; }
    
    .sidebar-header { padding: 0; border: none; min-height: 42px; }
    .sidebar-collapse-btn { top: 5px; right: 0; transform: none; }
    
    #main-nav {
        display: block;
        overflow-x: auto;
        overflow-y: hidden;
        padding: var(--spacing-xs) 0;
    }

    .sidebar-collapsed #main-nav { display: none; }

    .nav-links { width: max-content; flex-direction: row; gap: var(--spacing-xs); padding: 0; }
    .nav-item { min-height: 42px; padding: 8px 12px; white-space: nowrap; }
    .nav-item.active { border-left: 0; border-bottom: 2px solid var(--accent-primary); }
    
    #quick-audio-deck { display: none; } /* Hide heavy sidebar UI on mobile */
    
    #top-header {
        min-height: 62px;
        height: auto;
        gap: var(--spacing-sm);
        padding: 0 var(--spacing-md);
    }
    
    .header-right { gap: var(--spacing-xs); flex-wrap: wrap; justify-content: flex-end; }
    .mobile-mixer-toggle { display: flex; flex: 0 0 auto; }
    .header-badge { padding: 5px 8px; font-size: 0.76rem; }
    #pchs-profile-badge .profile-info { display: none; } /* Show icon only */
    #main-content { height: auto; min-height: 0; overflow: visible; }
    #view-container { overflow: visible; padding: var(--spacing-md); }
    .dashboard-grid { grid-template-columns: minmax(0, 1fr); }
    .view-header { align-items: flex-start; flex-wrap: wrap; }
    .view-header > * { min-width: 0; }
    .view-header .actions { flex-wrap: wrap; }
    .gpa-summary-grid, .class-card-grid, .deck-grid, .settings-grid, .appearance-grid { grid-template-columns: minmax(0, 1fr); }
    .study-priority-item { min-width: 0; }
    .study-priority-item > div { min-width: 0; overflow-wrap: anywhere; }
    .calendar-layout { min-width: 0; }
    .calendar-panel, .calendar-agenda { min-width: 0; padding: var(--spacing-sm); }
    .calendar-toolbar { flex-wrap: wrap; }
    .calendar-toolbar h2 { min-width: 120px; }
    .calendar-weekdays, .calendar-days { gap: 3px; }
    .calendar-day, .calendar-day-empty { min-width: 0; min-height: 48px; padding: 4px; overflow: hidden; }
    .calendar-day > span { font-size: 0.82rem; }
    .calendar-day small { max-width: 100%; overflow: hidden; white-space: nowrap; }
    .schedule-course-list, #schedule-course-list { overflow-x: auto; }
    .schedule-pattern-headings, .schedule-course-row { min-width: 430px; grid-template-columns: minmax(120px, 1.2fr) repeat(3, minmax(95px, 1fr)); }
    table { display: block; max-width: 100%; overflow-x: auto; }
    .transcript-class-summary { grid-template-columns: 20px minmax(110px, 1fr) auto auto; gap: var(--spacing-sm); }
    .transcript-class-summary > .transcript-item-count { display: none; }
    .transcript-class-content { padding-left: var(--spacing-md); }
    .transcript-assignment { grid-template-columns: 10px minmax(0, 1fr) auto; }
    .transcript-assignment-actions { grid-column: 2 / -1; justify-content: flex-start; flex-wrap: wrap; }
    .scenario-toolbar { grid-template-columns: minmax(0, 1fr); }
    .scenario-toolbar #new-grade-scenario-btn, .scenario-toolbar #create-grade-scenario-btn, .scenario-toolbar #delete-grade-scenario-btn { grid-row: auto; }
    .scenario-results-grid { grid-template-columns: minmax(0, 1fr); gap: var(--spacing-md); }
    .scenario-assignment-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .scenario-assignment-form label:first-child, .scenario-assignment-form button { grid-column: 1 / -1; }
    .practice-test-setup { grid-template-columns: minmax(0, 1fr); }
    .practice-test-setup > p, .practice-test-setup > fieldset, .practice-test-setup > button { grid-column: auto; }
    .practice-test-setup fieldset { gap: var(--spacing-sm) var(--spacing-md); }
    .assignment-filters { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
    .assignment-search-field { grid-column: 1 / -1; }
    .assignment-result-count { grid-column: 1 / -1; }
    .row-group { flex-direction: column; }
    .half-width { width: 100%; }
    
    .eisenhower-matrix {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }
    
    #sound-drawer {
        width: 100%;
        right: 0;
        border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    }
}

@media (max-width: 480px) {
    :root { --spacing-lg: 18px; --spacing-xl: 22px; }
    #top-header { align-items: flex-start; padding: var(--spacing-sm) var(--spacing-md); }
    .header-left h1 { font-size: 1.12rem; overflow-wrap: anywhere; }
    .header-right { margin-left: auto; max-width: 100%; }
    #student-class-badge i, #current-term-badge i { display: none; }
    .header-badge { padding: 4px 7px; font-size: 0.68rem; }
    .header-right { flex-wrap: wrap; align-items: center; gap: 6px; }
    #student-class-badge, #multiplayer-header-name { display: none; }
    #current-term-badge { white-space: nowrap; }
    .glass-card { padding: var(--spacing-md); }
    .primary-btn, .secondary-btn, .danger-btn { min-height: 42px; padding: 8px 11px; }
    .actions { flex-wrap: wrap; }
    .calendar-toolbar { justify-content: center; }
    .calendar-toolbar h2 { order: -1; flex-basis: 100%; }
    .calendar-weekdays { font-size: 0.68rem; }
    .calendar-day, .calendar-day-empty { min-height: 42px; padding: 3px; }
    .calendar-day small { font-size: 0.56rem; }
    .class-detail-summary, .class-focus-panel { align-items: flex-start; flex-direction: column; }
    .class-grade-metrics { width: 100%; justify-content: space-around; }
    .calendar-event { gap: var(--spacing-sm); }
    .calendar-event button { padding: 6px; }
    .arcade-answer-options { grid-template-columns: 1fr; }
    #sound-drawer { max-width: 100vw; }
    .drawer-content { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--spacing-sm); }
    .mixer-channel { min-width: 0; margin: 0; }
    .sidebar-header { min-height: 42px; }
    .transcript-class-summary { grid-template-columns: 18px minmax(0, 1fr) auto; padding: var(--spacing-sm); }
    .transcript-class-target { display: none; }
    .transcript-grade { font-size: 0.9rem; }
    .transcript-grade > strong { font-size: 0.95rem; }
    .transcript-class-name strong { font-size: 0.9rem; }
    .transcript-class-name small { font-size: 0.72rem; }
    .transcript-category > summary { grid-template-columns: 16px minmax(70px, 1fr) auto; gap: 5px; padding: 8px 5px; }
    .transcript-category-meta { grid-column: 2; grid-row: 2; font-size: 0.72rem; }
    .transcript-category-grade { grid-column: 3; grid-row: 1; }
    .transcript-item-count { grid-column: 3; grid-row: 2; font-size: 0.7rem; }
    .transcript-assignment-list { padding-left: 5px; padding-right: 5px; }
    .transcript-assignment { grid-template-columns: 8px minmax(0, 1fr); padding: 8px 3px; }
    .transcript-assignment-score { grid-column: 2; text-align: left; }
    .transcript-assignment-actions { grid-column: 2; }
    .transcript-assignment-actions button { min-height: 36px; padding: 5px 7px; }
    .scenario-item { grid-template-columns: minmax(0, 1fr) auto; gap: var(--spacing-sm); }
    .scenario-item > strong { grid-column: 1; font-size: 0.86rem; }
    .scenario-item .scenario-remove-btn { grid-column: 2; grid-row: 1 / span 2; }
    .scenario-grade-row { gap: 6px; }
    .scenario-grade-row > span { font-size: 0.86rem; }
}

body[data-color-scheme="forest"].dark-theme {
    --bg-glow-one: rgba(85, 201, 149, 0.10);
    --bg-glow-two: rgba(182, 160, 255, 0.08);
}
body[data-color-scheme="forest"].light-theme {
    --bg-glow-one: rgba(22, 134, 92, 0.08);
    --bg-glow-two: rgba(114, 88, 204, 0.06);
}
body[data-color-scheme="ocean"].dark-theme {
    --bg-base: #0c1725;
    --bg-glass: rgba(20, 39, 61, 0.9);
    --bg-glass-hover: rgba(31, 57, 84, 0.96);
    --border-glass: rgba(171, 213, 245, 0.14);
    --text-primary: #eff7ff;
    --text-secondary: #b5ccdf;
    --text-muted: #8ba6be;
    --accent-primary: #63b3ed;
    --accent-primary-hover: #4299e1;
    --accent-secondary: #81e6d9;
    --accent-on-primary: #10212e;
    --bg-glow-one: rgba(66, 153, 225, 0.16);
    --bg-glow-two: rgba(129, 230, 217, 0.09);
}
body[data-color-scheme="ocean"].light-theme {
    --bg-base: #eef6fc;
    --bg-glass: rgba(255, 255, 255, 0.9);
    --bg-glass-hover: rgba(222, 239, 252, 0.98);
    --border-glass: rgba(30, 91, 139, 0.16);
    --text-primary: #142b3d;
    --text-secondary: #45657e;
    --text-muted: #516d83;
    --accent-primary: #126fa9;
    --accent-primary-hover: #0f6397;
    --accent-secondary: #0f9f9a;
    --accent-on-primary: #ffffff;
    --bg-glow-one: rgba(20, 121, 184, 0.12);
    --bg-glow-two: rgba(15, 159, 154, 0.08);
}
body[data-color-scheme="violet"].dark-theme {
    --bg-base: #171222;
    --bg-glass: rgba(39, 29, 57, 0.9);
    --bg-glass-hover: rgba(57, 43, 79, 0.96);
    --border-glass: rgba(218, 198, 247, 0.14);
    --text-primary: #f7f1ff;
    --text-secondary: #c9bbdc;
    --text-muted: #a394b6;
    --accent-primary: #b49aff;
    --accent-primary-hover: #9a7bea;
    --accent-secondary: #f0abfc;
    --accent-on-primary: #211637;
    --bg-glow-one: rgba(154, 123, 234, 0.16);
    --bg-glow-two: rgba(240, 171, 252, 0.09);
}
body[data-color-scheme="violet"].light-theme {
    --bg-base: #f6f1fb;
    --bg-glass: rgba(255, 255, 255, 0.91);
    --bg-glass-hover: rgba(237, 226, 249, 0.98);
    --border-glass: rgba(105, 70, 150, 0.16);
    --text-primary: #2b1c3b;
    --text-secondary: #604d75;
    --text-muted: #6e5e7f;
    --accent-primary: #7653c7;
    --accent-primary-hover: #6040ad;
    --accent-secondary: #a03fb2;
    --accent-on-primary: #ffffff;
    --bg-glow-one: rgba(118, 83, 199, 0.12);
    --bg-glow-two: rgba(160, 63, 178, 0.08);
}
body[data-color-scheme="sunset"].dark-theme {
    --bg-base: #211510;
    --bg-glass: rgba(54, 34, 26, 0.9);
    --bg-glass-hover: rgba(78, 48, 35, 0.96);
    --border-glass: rgba(255, 220, 193, 0.14);
    --text-primary: #fff5ec;
    --text-secondary: #ddc1ad;
    --text-muted: #b49a88;
    --accent-primary: #ffad72;
    --accent-primary-hover: #f28b51;
    --accent-secondary: #f9a8d4;
    --accent-on-primary: #321b12;
    --bg-glow-one: rgba(242, 139, 81, 0.16);
    --bg-glow-two: rgba(249, 168, 212, 0.09);
}
body[data-color-scheme="sunset"].light-theme {
    --bg-base: #fff5ed;
    --bg-glass: rgba(255, 255, 255, 0.92);
    --bg-glass-hover: rgba(255, 232, 215, 0.98);
    --border-glass: rgba(151, 75, 40, 0.16);
    --text-primary: #392317;
    --text-secondary: #765542;
    --text-muted: #7e6250;
    --accent-primary: #bd4b21;
    --accent-primary-hover: #a94320;
    --accent-secondary: #b93b70;
    --accent-on-primary: #ffffff;
    --bg-glow-one: rgba(198, 83, 39, 0.12);
    --bg-glow-two: rgba(185, 59, 112, 0.08);
}
body[data-color-scheme="monochrome"].dark-theme {
    --bg-base: #050505;
    --bg-glass: rgba(24, 24, 24, 0.94);
    --bg-glass-hover: rgba(42, 42, 42, 0.98);
    --border-glass: rgba(255, 255, 255, 0.16);
    --text-primary: #ffffff;
    --text-secondary: #d1d1d1;
    --text-muted: #a0a0a0;
    --accent-primary: #ffffff;
    --accent-primary-hover: #d9d9d9;
    --accent-secondary: #c7c7c7;
    --accent-on-primary: #111111;
    --status-success: #dedede;
    --status-warning: #bdbdbd;
    --status-danger: #a0a0a0;
    --status-info: #c7c7c7;
    --bg-glow-one: rgba(255, 255, 255, 0.06);
    --bg-glow-two: rgba(190, 190, 190, 0.04);
}
body[data-color-scheme="monochrome"].light-theme {
    --bg-base: #ffffff;
    --bg-glass: rgba(248, 248, 248, 0.96);
    --bg-glass-hover: rgba(232, 232, 232, 0.98);
    --border-glass: rgba(0, 0, 0, 0.16);
    --text-primary: #101010;
    --text-secondary: #3f3f3f;
    --text-muted: #666666;
    --accent-primary: #111111;
    --accent-primary-hover: #333333;
    --accent-secondary: #555555;
    --accent-on-primary: #ffffff;
    --status-success: #303030;
    --status-warning: #555555;
    --status-danger: #111111;
    --status-info: #444444;
    --bg-glow-one: rgba(0, 0, 0, 0.04);
    --bg-glow-two: rgba(0, 0, 0, 0.025);
}

.scheme-picker { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(110px, 100%), 1fr)); gap: var(--spacing-sm); margin-top: var(--spacing-md); }
.scheme-option { min-height: 78px; display: grid; justify-items: center; align-content: center; gap: 6px; padding: var(--spacing-sm); border: 1px solid var(--border-glass); border-radius: var(--border-radius-md); color: var(--text-primary); background: var(--bg-glass); }
.scheme-option:hover, .scheme-option.selected { border-color: var(--accent-primary); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-primary) 28%, transparent); }
.scheme-swatch { width: 34px; height: 16px; border-radius: 20px; background: var(--swatch); }
.forest-swatch { --swatch: #55c995; }
.ocean-swatch { --swatch: #4299e1; }
.violet-swatch { --swatch: #9a7bea; }
.sunset-swatch { --swatch: #f28b51; }
.aurora-swatch { --swatch: linear-gradient(90deg, #70e2c0, #a99bff); }
.coral-swatch { --swatch: linear-gradient(90deg, #ff907d, #ffd27a); }
.midnight-swatch { --swatch: linear-gradient(90deg, #536ad2, #cf9bff); }
.monochrome-swatch { --swatch: linear-gradient(90deg, #111 0 50%, #fff 50% 100%); border: 1px solid var(--border-glass); }
.setting-toggle { display: flex; align-items: center; gap: var(--spacing-sm); margin: var(--spacing-md) 0; }
.setting-toggle input { width: 20px; height: 20px; accent-color: var(--accent-primary); }
.appearance-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: var(--spacing-lg); }
.study-progress-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(145px, 100%), 1fr)); gap: var(--spacing-sm); margin-bottom: var(--spacing-md); }
.study-progress-summary > div { display: grid; gap: 3px; padding: var(--spacing-md); border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass); }
.study-progress-summary strong { color: var(--accent-primary); font-size: 1.5rem; }
.study-progress-summary span, .study-history-item span, .study-history-item small { color: var(--text-secondary); font-size: 0.86rem; }
.study-history-list { display: grid; gap: var(--spacing-sm); }
.study-history-item { padding: var(--spacing-sm) 0; border-top: 1px solid var(--border-glass); }
.study-history-item > div { display: grid; gap: 3px; }

body.compact-ui { --spacing-lg: 18px; --spacing-xl: 24px; }
body.compact-ui .glass-card { padding: var(--spacing-md); }
body.compact-ui .nav-item { padding-top: 8px; padding-bottom: 8px; }

/* --- Settings tabs --- */
.settings-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: var(--spacing-md); padding: 5px; border: 1px solid var(--border-glass); border-radius: 999px; background: var(--bg-glass); width: fit-content; max-width: 100%; }
.settings-tab { display: inline-flex; align-items: center; gap: 7px; padding: 8px 16px; border: 0; border-radius: 999px; background: transparent; color: var(--text-secondary); font: inherit; font-weight: 700; font-size: 0.86rem; cursor: pointer; }
.settings-tab:hover { color: var(--text-primary); }
.settings-tab.active { background: var(--accent-primary); color: var(--accent-on-primary, #06130d); }

/* --- Study ambience (flashcards / solo study only) --- */
.study-ambience { position: relative; margin-left: auto; z-index: 40; display: flex; align-items: center; }
.study-ambience.hidden, .ambience-panel.hidden { display: none; }
.ambience-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 8px 12px; border-radius: var(--border-radius-sm); border: 1px solid var(--border-glass); background: var(--bg-glass); color: var(--text-secondary); font: inherit; font-size: .8rem; cursor: pointer; }
.ambience-toggle[aria-expanded="true"] { border-color: var(--accent-primary); color: var(--accent-primary); }
.ambience-panel { position: absolute; right: 0; top: calc(100% + 8px); width: min(280px, calc(100vw - 36px)); max-height: min(460px, 65dvh); overflow-y: auto; padding: 14px; border: 1px solid var(--border-glass); border-radius: 14px; background: var(--bg-base); box-shadow: var(--shadow-lg); display: grid; gap: 8px; }
.ambience-panel .audio-toggles { margin-bottom: 4px; }
@media (max-width: 680px) {
    #active-study-area { padding: 12px; }
    .study-header { gap: 6px; margin-bottom: 12px; }
    .study-header h3 { flex: 1 1 calc(100% - 48px); margin: 0; overflow-wrap: anywhere; }
    .study-header #exit-study-btn { order: 1; }
    .study-header #study-progress, .study-header .focus-timer-control { order: 2; }
    .study-header .focus-timer-control { margin-left: auto; }
    .flashcard-container { height: clamp(220px, 40dvh, 350px); }
}

/* --- Shop screen --- */
.multiplayer-shop { margin-top: var(--spacing-md); }
.solo-game-settings { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 190px), 1fr)); align-items: end; gap: 10px; margin: 10px 0 12px; padding: 12px; border: 1px solid var(--border-glass); border-radius: 12px; background: color-mix(in srgb, var(--accent-primary) 5%, var(--bg-glass)); }
.solo-game-settings label { display: grid; gap: 5px; color: var(--text-secondary); font-size: .8rem; font-weight: 700; }
.solo-game-settings select { width: 100%; min-height: 40px; padding: 7px 10px; border: 1px solid var(--border-glass); border-radius: 9px; background: var(--bg-base); color: var(--text-primary); font: inherit; }
.solo-game-settings small { grid-column: 1 / -1; color: var(--text-secondary); font-size: .75rem; }
.solo-game-settings.hidden { display: none; }
.shop-wallet { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; background: color-mix(in srgb, #fbbf24 18%, transparent); color: #fbbf24; font-size: 1.05rem; white-space: nowrap; }
.shop-tabs { gap: 8px; margin-bottom: 14px; }
.shop-tab { padding: 8px 16px; font-size: 0.82rem; }
.shop-tab.selected { background: var(--accent-primary); border-color: var(--accent-primary); color: var(--accent-on-primary); }
.multiplayer-shop .shop-grid { grid-template-columns: repeat(auto-fill, minmax(min(100%, 170px), 1fr)); gap: 12px; max-height: none; overflow: visible; }
.multiplayer-shop .shop-grid-boxes { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); align-items: start; }
.multiplayer-shop .shop-grid > .shop-category-title, .multiplayer-shop .shop-grid > .settings-hint, .multiplayer-shop .shop-grid > .box-reveal { grid-column: 1 / -1; }
.multiplayer-shop .multiplayer-shop-item { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto 1fr auto; align-items: start; justify-items: center; text-align: center; gap: 12px; padding: 16px 12px; border: 1px solid var(--border-glass); border-radius: var(--border-radius-md); background: var(--bg-glass); transition: box-shadow .15s, border-color .15s; }
.multiplayer-shop .multiplayer-shop-item:hover { border-color: color-mix(in srgb, var(--rarity, var(--accent-primary)) 45%, var(--border-glass)); box-shadow: var(--shadow-md); }
.multiplayer-shop .multiplayer-shop-item:has(.char-avatar), .multiplayer-shop .multiplayer-shop-item:has(.shop-palette) { grid-template-columns: minmax(0, 1fr); }
.shop-preview { display: grid; place-items: center; position: relative; width: 100%; min-width: 0; height: 112px; border-radius: 10px; background: radial-gradient(ellipse at 50% 75%, color-mix(in srgb, var(--rarity, var(--accent-primary)) 14%, transparent), transparent 72%); }
.multiplayer-shop .multiplayer-shop-item .char-avatar, .multiplayer-shop .multiplayer-shop-item .shop-palette { width: 88px; height: 88px; border-radius: 18px; }
.multiplayer-shop .multiplayer-shop-item .shop-palette { width: 72px; height: 72px; box-shadow: inset 0 0 0 5px var(--bg-glass), 0 0 0 1px var(--border-glass); }
.multiplayer-shop .multiplayer-shop-item > div { justify-items: center; }
.multiplayer-shop .multiplayer-shop-item > button { width: 100%; min-width: 0; min-height: 44px; white-space: normal; }
.multiplayer-shop .multiplayer-shop-item.equipped { box-shadow: 0 0 0 2px var(--accent-primary); }
.multiplayer-shop .box-card { --box-accent: var(--accent-primary); grid-template-rows: auto auto 1fr auto; }
.box-card.box-rare, .box-card.box-skin { --box-accent: #78bce8; }
.box-card.box-hat, .box-card.box-legendary { --box-accent: #e9ba68; }
.box-card.box-accessory, .box-card.box-mythic, .box-card.box-effect { --box-accent: var(--accent-secondary); }
.box-card.box-palette { --box-accent: #79cbbb; }
.multiplayer-shop .box-card .mystery-capsule { height: 140px; color: var(--box-accent); background: radial-gradient(ellipse at 50% 75%, color-mix(in srgb, var(--box-accent) 16%, transparent), transparent 72%); }
.mystery-capsule svg { display: block; width: 160px; max-width: 100%; height: 140px; }
.mystery-capsule > i { position: absolute; top: 60%; left: 35%; transform: translate(-50%, -50%) skewY(23deg); color: #f0f7f2; font-size: 1.25rem; }
.box-odds { width: 100%; min-width: 0; text-align: left; }
.box-odds summary { min-height: 44px; display: flex; align-items: center; justify-content: center; gap: 8px; list-style: none; cursor: pointer; color: var(--text-secondary); font-size: .78rem; border-radius: 8px; }
.box-odds summary::-webkit-details-marker { display: none; }
.box-odds summary::after { content: '+'; color: var(--accent-primary); font-size: 1rem; }
.box-odds[open] summary::after { content: '-'; }
.box-odds .box-chances { justify-content: center; margin-bottom: 8px; gap: 6px; }
.box-odds .box-chances > span { font-size: .72rem; padding: 4px 7px; }
.box-progress { font-size: .75rem; color: var(--text-secondary); margin-top: 6px; }
.question-reward-control { display: grid; gap: 8px; min-width: 0; padding: 12px; border: 1px solid var(--border-glass); border-radius: var(--border-radius-md); background: var(--bg-glass); }
.question-reward-inputs { display: grid; grid-template-columns: minmax(0, 1fr) 80px; align-items: center; gap: 12px; }
.question-reward-inputs input { width: 100%; min-width: 0; }
.question-reward-control small { color: var(--text-secondary); font-size: .75rem; }
.matrix-quadrant li { overflow-wrap: anywhere; }
.matrix-quadrant li small { display: block; color: var(--text-secondary); font-size: .75rem; margin-top: 4px; }
.study-analytics-decks { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); gap: 12px; margin-top: 12px; }
.study-analytics-decks article { display: grid; gap: 6px; padding: 12px; border: 1px solid var(--border-glass); border-radius: 10px; overflow-wrap: anywhere; }
.study-analytics-decks span, .study-analytics-decks small { color: var(--text-secondary); }
.my-deck-heading { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.my-deck-heading input { flex: 1 1 220px; min-width: 0; }
.table-scroll, .table-responsive { max-width: 100%; overflow-x: auto; }
.table-scroll:focus-visible, .table-responsive:focus-visible { outline: 2px solid var(--accent-primary); outline-offset: 4px; }
.community-deck-browser > summary { cursor: pointer; font-weight: 700; }
.community-deck-browser[open] > summary { margin-bottom: 16px; }
.multiplayer-shop .box-complete { display: flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 8px; color: var(--text-primary); background: color-mix(in srgb, var(--accent-primary) 14%, var(--bg-glass)); border: 1px solid var(--border-glass); border-radius: 8px; width: 100%; grid-row: 4; }
.multiplayer-shop .box-card.collection-complete { border-color: color-mix(in srgb, var(--accent-primary) 40%, var(--border-glass)); }
.multiplayer-shop .multiplayer-shop-item .aura-preview { width: 112px; height: 112px; border-radius: 12px; background: transparent; }
.aura-preview canvas { display: block; width: 100%; height: 100%; }
.multiplayer-shop-item.rarity-mythic .shop-preview { background: radial-gradient(ellipse, color-mix(in srgb, #f472b6 18%, transparent), transparent 75%); }
body.compact-ui .multiplayer-shop-item { padding: 12px 10px; gap: 8px; }
body.compact-ui .shop-preview { height: 88px; }
body.compact-ui .multiplayer-shop .multiplayer-shop-item .aura-preview { width: 88px; height: 88px; }
body.compact-ui .multiplayer-shop .box-card .mystery-capsule { height: 112px; }
body.compact-ui .mystery-capsule svg { height: 112px; width: 128px; }
@media (max-width: 560px) {
  .multiplayer-shop .shop-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .multiplayer-shop .shop-grid-boxes { grid-template-columns: minmax(0, 1fr); }
  .multiplayer-shop .multiplayer-shop-item { padding: 12px 8px; gap: 8px; }
  .shop-preview { height: 88px; }
  .multiplayer-shop .multiplayer-shop-item .aura-preview { width: 88px; height: 88px; }
  .multiplayer-shop .multiplayer-shop-item .char-avatar, .multiplayer-shop .multiplayer-shop-item .shop-palette { width: 68px; height: 68px; }
  .multiplayer-shop .shop-grid > .box-card { grid-template-columns: 96px minmax(0, 1fr); grid-template-rows: auto auto auto; justify-items: stretch; text-align: left; padding: 12px; gap: 4px 12px; }
  .multiplayer-shop .box-card .mystery-capsule { width: 96px; height: 96px; grid-row: 1 / 3; }
  .multiplayer-shop .box-card .mystery-capsule svg { width: 96px; height: 84px; }
  .mystery-capsule > i { font-size: .9rem; top: 59%; }
  .multiplayer-shop .box-card > .box-details { justify-items: start; align-self: end; }
  .box-odds summary { justify-content: flex-start; }
  .multiplayer-shop .box-card > button { grid-column: 1 / -1; margin-top: 6px; }
  .multiplayer-shop .box-card > .box-complete { grid-column: 1 / -1; grid-row: 3; }
  .multiplayer-shop .multiplayer-shop-item .aura-preview { width: 88px; height: 88px; }
  .shop-tabs { flex-wrap: wrap; gap: 6px; }
  .shop-tab { flex: 1 1 auto; min-height: 44px; padding: 6px 10px; white-space: normal; }
  .box-odds .box-chances { justify-content: flex-start; }
}

/* --- PRINT MEDIA QUERY (For Markdown/Cheat-Sheet Exports) --- */
@container workspace (max-width: 700px) {
    .focus-sprint-controls { grid-template-columns: auto minmax(0, 1fr); }
    .assignment-filters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .assignment-search-field, .assignment-result-count { grid-column: 1 / -1; }
}

@media print {
    /* Hide UI Elements */
    #sidebar, #top-header, #sound-drawer, .view-header, .actions, .modal-overlay, button, .chart-container, #arcade-canvas-container, .arcade-menu, .study-controls {
        display: none !important;
    }

    /* Reset Body & Containers */
    body {
        background: white !important;
        color: black !important;
        background-image: none !important;
    }

    #app-container, #main-content, #view-container, .view {
        height: auto !important;
        overflow: visible !important;
        padding: 0 !important;
        margin: 0 !important;
        display: block !important;
    }
    
    /* Only show active view (usually Flashcard View for cheat sheets) */
    .view.hidden {
        display: none !important;
    }

    /* Dense Multi-Column Layout for Flashcards */
    #deck-grid {
        display: block !important; /* Override grid */
        column-count: 2;
        column-gap: 20px;
    }

    .glass-card {
        border: 1px solid #ccc !important;
        background: none !important;
        box-shadow: none !important;
        backdrop-filter: none !important;
        page-break-inside: avoid;
        margin-bottom: 10px;
        padding: 10px !important;
        border-radius: 4px !important;
    }

    /* Table Printing */
    table {
        border-collapse: collapse !important;
        width: 100% !important;
    }

    th, td {
        border: 1px solid #000 !important;
        padding: 4px 8px !important;
        font-size: 10pt;
    }
    
    h1, h2, h3, th { color: black !important; }
    
    /* Ensure colors are printed */
    * {
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }
}

/* ---- Assignment adder, schedule, shop page and lobby ---- */
.assignment-state-toggle { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; border-radius: 10px; background: var(--bg-glass-hover); border: 1px solid var(--border-glass); }
.assignment-state-toggle label { position: relative; margin: 0; cursor: pointer; }
.assignment-state-toggle input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.assignment-state-toggle span { display: block; padding: 8px 10px; text-align: center; border-radius: 7px; font-weight: 600; color: var(--text-secondary); }
.assignment-state-toggle input:checked + span { background: var(--accent-primary); color: var(--accent-on-primary); }
.assignment-state-toggle input:focus-visible + span { outline: 2px solid var(--accent-primary); outline-offset: 2px; }
.assignment-more { border: 1px solid var(--border-glass); border-radius: 10px; padding: 8px 12px; }
.assignment-more summary { cursor: pointer; font-weight: 600; color: var(--text-secondary); }
.transcript-add-btn { margin-top: 6px; }
.schedule-pattern-headings, .schedule-course-row { grid-template-columns: minmax(150px, 1.5fr) minmax(140px, 1fr); }
@media (max-width: 640px) { .schedule-pattern-headings, .schedule-course-row { min-width: 0; grid-template-columns: minmax(0, 1fr) minmax(110px, 0.9fr); } }
.shop-top { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: var(--spacing-md); margin-bottom: var(--spacing-md); align-items: stretch; }
.shop-top .shop-wallet { margin-top: 10px; font-size: 1.1rem; }
.daily-reward-card { display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-md); flex-wrap: wrap; }
.daily-reward-card h3 { margin: 0 0 4px; }
.daily-reward-card p { margin: 0; color: var(--text-secondary); }
.daily-reward-card > div { flex: 1 1 240px; min-width: 0; overflow-wrap: anywhere; }
.daily-reward-card > button { max-width: 100%; white-space: normal; }
.multiplayer-layout { grid-template-columns: minmax(0, 1fr); }
.lobby-info { display: grid; gap: 8px; padding: 14px; border-radius: 12px; background: var(--bg-glass-hover); border: 1px solid var(--border-glass); }
.lobby-info p { margin: 0; color: var(--text-secondary); }
.lobby-mode { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; align-items: baseline; }
.lobby-mode strong { font-size: 1.15rem; }
.lobby-mode span { color: var(--text-secondary); font-size: 0.85rem; }
.lobby-controls { font-size: 0.88rem; }
.lobby-controls i { margin-right: 6px; color: var(--accent-primary); }
.hosted-room-players .lobby-player { grid-template-columns: 44px minmax(0, 1fr) auto auto; }
.lobby-tag { font-size: 0.75rem; padding: 3px 9px; border-radius: 999px; background: color-mix(in srgb, #34d399 22%, transparent); color: #34d399; font-weight: 700; }
.lobby-tag.is-host { background: color-mix(in srgb, #fbbf24 22%, transparent); color: #fbbf24; }
.practice-spread { display: grid; gap: 8px; }
.practice-spread label { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.practice-spread input { width: 80px; }
.practice-matching { display: grid; gap: 10px; margin-bottom: 12px; }
.practice-matching-row { display: grid; grid-template-columns: minmax(120px, 1fr) minmax(160px, 2fr); gap: 10px; align-items: center; }
@media (max-width: 700px) { .shop-top, .practice-matching-row { grid-template-columns: 1fr; } }

/* --- Touch controls for multiplayer games --- */
.mpg-touch { display: none; position: absolute; left: 0; right: 0; bottom: 0; padding: 0 14px 18px; justify-content: space-between; align-items: flex-end; pointer-events: none; z-index: 5; }
.mpg-overlay.has-touch .mpg-touch { display: flex; }
.mpg-overlay.has-touch .mpg-hint { display: block; top: auto; bottom: auto; left: 50%; transform: translateX(-50%); width: max-content; max-width: calc(100% - 24px); padding: 5px 10px; font-size: .68rem; z-index: 5; }
.mpg-overlay.has-touch .mpg-hint:empty { display: none; }
.mpg-overlay.has-touch .mpg-meter { bottom: 190px; width: 170px; }
.mpg-touch button { pointer-events: auto; touch-action: none; user-select: none; -webkit-user-select: none; border: 2px solid rgba(255,255,255,.28); background: rgba(15,23,42,.55); color: #f8fafc; font-weight: 800; font-size: 1rem; border-radius: 50%; width: 62px; height: 62px; backdrop-filter: blur(4px); }
.mpg-touch button.on { background: rgba(56,189,248,.65); transform: scale(.95); }
.mpg-stick { position: relative; width: 140px; height: 140px; border-radius: 50%; border: 2px solid rgba(255,255,255,.28); background: rgba(15,23,42,.45); pointer-events: auto; touch-action: none; user-select: none; -webkit-user-select: none; backdrop-filter: blur(4px); }
.mpg-knob { position: absolute; left: 50%; top: 50%; width: 60px; height: 60px; margin: -30px 0 0 -30px; border-radius: 50%; background: rgba(56,189,248,.65); border: 2px solid rgba(255,255,255,.5); pointer-events: none; }
.mpg-btns { display: grid; grid-template-columns: repeat(var(--cols, 2), 66px); gap: 8px; }
.mpg-btns .b-main { width: 76px; height: 76px; background: rgba(34,197,94,.5); grid-column: 1 / -1; justify-self: center; font-size: .9rem; }
.mpg-btns .b-buy { background: rgba(34,197,94,.5); }
.mpg-btns .b-sell { background: rgba(239,68,68,.5); }
.mpg-btns .b-max { background: rgba(99,102,241,.5); }
.mpg-touch.no-stick { justify-content: center; }
.mpg-touch.no-stick .mpg-stick { display: none; }
.mpg-touch.no-stick .mpg-btns { grid-template-columns: repeat(var(--cols, 2), 84px); }
.mpg-touch.no-stick .mpg-btns button { width: 84px; height: 84px; border-radius: 22px; }
.mpg-touch.no-stick .mpg-btns .b-main { width: 100%; max-width: 176px; }
@media (max-width: 520px) { .mpg-stick { width: 120px; height: 120px; } .mpg-btns button { width: 58px; height: 58px; } .mpg-btns { grid-template-columns: repeat(var(--cols, 2), 58px); } }
.mpg-btns .b-q { background: rgba(250,204,21,.45); }
.mpg-btns .b-e { background: rgba(168,85,247,.5); }
.mpg-touch .hidden { display: none; }
.mpg-btns button { width: 66px; height: 66px; font-size: .85rem; }
/* Admin page */
.admin-panel { display: grid; gap: 12px; }
.admin-tabs, .admin-search { display: flex; gap: 8px; flex-wrap: wrap; }
.admin-search input { flex: 1 1 140px; min-width: 0; }
.admin-tabs .selected { background: var(--accent-primary); color: var(--accent-on-primary); }
.admin-list { display: grid; gap: 8px; }
.admin-row { display: flex; justify-content: space-between; gap: 12px; align-items: center; flex-wrap: wrap; padding: 10px 12px; border-radius: 12px; background: rgba(148, 163, 184, .12); }
.admin-row small { display: block; opacity: .75; }
.admin-preview { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.admin-row > div:first-child { flex: 1 1 260px; min-width: 0; overflow-wrap: anywhere; }
.admin-panel, .admin-list, .admin-row { min-width: 0; max-width: 100%; }
.admin-row > .admin-tools { flex: 0 1 auto; max-width: 100%; }
.admin-row > .admin-deck-details { flex: 1 0 100%; min-width: 0; }

/* UI touch-ups */
html { scroll-behavior: smooth; }
:focus-visible { outline: 2px solid var(--accent-primary); outline-offset: 2px; border-radius: 6px; }
button, .glass-card, .nav-item, input, select, textarea { transition: transform .15s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease, color .2s ease; }
button:not(:disabled):active { transform: translateY(1px) scale(.98); }
.primary-btn:not(:disabled):hover, .secondary-btn:not(:disabled):hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(0, 0, 0, .18); }
.glass-card:hover { box-shadow: 0 8px 24px rgba(0, 0, 0, .14); }
input:focus, select:focus, textarea:focus { border-color: var(--accent-primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-primary) 22%, transparent); }
::selection { background: color-mix(in srgb, var(--accent-primary) 35%, transparent); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition-duration: .01ms !important; animation-duration: .01ms !important; } }
.admin-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.admin-badge { background: #ef4444; color: #fff; border-radius: 999px; padding: 1px 8px; font-size: .75em; }
.forced-username-modal { position: fixed; inset: 0; z-index: 10000; display: grid; place-items: center; background: rgba(5, 8, 20, .85); padding: 16px; }
.forced-username-card { max-width: 420px; width: 100%; display: grid; gap: 12px; }
.forced-username-card input { width: 100%; }

/* ---- Usability and touch polish ---- */
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
button, a, [role="button"], label, select, summary { -webkit-tap-highlight-color: transparent; }
button, [role="button"], .nav-item, select, input[type="checkbox"], input[type="radio"], input[type="range"] { touch-action: manipulation; }
:focus-visible { outline: 2px solid var(--accent-primary); outline-offset: 2px; border-radius: 6px; }
button:not(:disabled):active, .nav-item:active, .glass-card.clickable:active { transform: scale(.98); }
button:disabled, [aria-disabled="true"] { cursor: not-allowed; opacity: .55; }
.primary-btn, .secondary-btn, .danger-btn, .icon-btn { transition: transform .12s ease, filter .15s ease, background-color .15s ease; }
.secondary-btn:not(:disabled):hover { filter: brightness(1.08); }
textarea { resize: vertical; }

@media (pointer: coarse) {
    button, .nav-item, select, .icon-btn, summary { min-height: 44px; }
    .icon-btn { min-width: 44px; }
    input[type="checkbox"], input[type="radio"] { width: 22px; height: 22px; }
    input[type="range"] { min-height: 32px; }
    .transcript-assignment-actions button, .calendar-event button { min-height: 40px; min-width: 40px; }
}

@media (max-width: 768px) {
    /* 16px fields stop iOS from zooming the page when a field is focused */
    input, select, textarea { font-size: 16px; min-height: 44px; }
    #sidebar { position: sticky; top: 0; z-index: 40; padding-top: max(var(--spacing-sm), env(safe-area-inset-top)); }
    #main-nav { scroll-snap-type: x proximity; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
    #main-nav::-webkit-scrollbar { display: none; }
    .nav-item { scroll-snap-align: center; }
    #view-container { padding-bottom: calc(var(--spacing-lg) + env(safe-area-inset-bottom)); padding-left: max(var(--spacing-sm), env(safe-area-inset-left)); padding-right: max(var(--spacing-sm), env(safe-area-inset-right)); }
    .view-header .actions > button, .view-header .actions > .primary-btn, .view-header .actions > .secondary-btn { flex: 1 1 140px; }
    .modal-overlay, .modal-content { max-height: 100dvh; overflow-y: auto; -webkit-overflow-scrolling: touch; }
    .forced-username-modal { align-items: start; padding-top: 12vh; }
    #sound-drawer { padding-bottom: env(safe-area-inset-bottom); max-height: 80dvh; overflow-y: auto; }
    .manual-card-row input, .manual-card-row textarea { min-height: 44px; }
    .toast, #toast-container { max-width: calc(100vw - 24px); }
}

@media (max-width: 480px) {
    .glass-card h2 { font-size: 1.15rem; }
    .primary-btn, .secondary-btn, .danger-btn { width: auto; }
    .form-group input, .form-group select, .form-group textarea { width: 100%; }
}

/* Mobile game controls (after base button rules) */
.mpg-overlay { touch-action: none; overscroll-behavior: none; -webkit-touch-callout: none; }
/* Desktop recharge uses Q; the separate on-screen recharge pill is touch-only. */
.mpg-overlay .mpg-recharge { display: none; }
.mpg-overlay.has-touch .mpg-recharge { display: none; }
#game-canvas { touch-action: none; }
.mpg-stick-zone { display: none; position: absolute; left: 0; bottom: 0; width: 50%; top: 25%; z-index: 4; touch-action: none; }
.mpg-overlay.has-touch .mpg-stick-zone { display: block; }
.mpg-overlay.has-touch.touch-no-stick .mpg-stick-zone { display: none; }
.mpg-stick { transition: transform .12s ease, opacity .15s ease; opacity: .8; }
.mpg-stick.active { transition: none; opacity: 1; }
.mpg-btns { gap: 14px; }
.mpg-touch { padding: 0 max(14px, env(safe-area-inset-right)) max(18px, env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left)); }
.mpg-touch button { -webkit-tap-highlight-color: transparent; }
.mpg-touch button.on { box-shadow: 0 0 0 4px rgba(56,189,248,.35); }
.mpg-touch .mpg-qbtn { position: absolute; right: max(14px, env(safe-area-inset-right)); bottom: calc(max(18px, env(safe-area-inset-bottom)) + var(--btns-h, 170px) + 16px); width: auto; height: 40px; padding: 0 14px; border-radius: 999px; font-size: .82rem; display: inline-flex; align-items: center; gap: 6px; background: rgba(250,204,21,.4); border-color: rgba(250,204,21,.7); }
.mpg-touch .mpg-qbtn span { display: inline-grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: rgba(0,0,0,.35); font-size: .8rem; }
/* The joystick owns the bottom-left corner on touch; lift the score widget under the header. */
.mpg-overlay.has-touch .mpg-score { bottom: auto; top: 100px; left: 12px; padding: 5px 12px; }
.mpg-overlay.has-touch .mpg-score strong { font-size: 1.15rem; }
@media (max-width: 520px) {
    .mpg-stick { width: 128px; height: 128px; }
    .mpg-knob { width: 56px; height: 56px; margin: -28px 0 0 -28px; }
    .mpg-btns { grid-template-columns: repeat(var(--cols, 2), 62px); gap: 12px; }
    .mpg-btns button { width: 62px; height: 62px; }
    .mpg-btns .b-main { width: 74px; height: 74px; }
    .mpg-touch.no-stick .mpg-btns { grid-template-columns: repeat(var(--cols, 2), 78px); }
    .mpg-touch.no-stick .mpg-btns button { width: 78px; height: 78px; }
}
@media (max-height: 480px) and (orientation: landscape) {
    .mpg-stick { width: 112px; height: 112px; }
    .mpg-btns button { width: 56px; height: 56px; }
    .mpg-btns .b-main { width: 66px; height: 66px; }
    .mpg-btns { grid-template-columns: repeat(var(--cols, 2), 56px); gap: 10px; }
    .mpg-touch .mpg-qbtn { bottom: auto; top: 64px; }
    .mpg-overlay.has-touch .mpg-meter { bottom: auto; top: 64px; left: 12px; width: 150px; }
}

/* Multiplayer HUD lanes: reserve measured header/toast and control space for canvas HUDs. */
.mpg-hud { position: absolute; top: max(8px, env(safe-area-inset-top)); left: max(8px, env(safe-area-inset-left)); right: max(8px, env(safe-area-inset-right)); display: grid; grid-template-columns: minmax(0, 1fr) minmax(220px, 310px); align-items: start; gap: 6px; padding: 0; border: 0; background: transparent; box-sizing: border-box; z-index: 6; pointer-events: none; }
.mpg-hud .mpg-top { position: static; display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 6px; min-width: 0; }
.mpg-hud .mpg-chip { min-width: 0; width: fit-content; max-width: 100%; padding: 5px 10px; box-sizing: border-box; pointer-events: none; }
.mpg-hud .mpg-chip strong, .mpg-hud .mpg-chip span { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; line-height: 1.3; }
.mpg-hud .mpg-timer { padding: 6px 10px; font-size: .9rem; }
.mpg-hud .mpg-actions { gap: 4px; }
.mpg-hud .mpg-actions button { min-height: 0; padding: 7px 9px; font-size: .78rem; white-space: nowrap; }
.mpg-hud .mpg-top { grid-column: 1 / -1; }
.mpg-status { display: flex; flex-wrap: wrap; align-items: center; align-content: start; gap: 6px; min-width: 0; }
.mpg-overlay .mpg-hud .mpg-score { position: static; min-width: 0; min-height: 44px; box-sizing: border-box; padding: 6px 10px; flex: 0 1 150px; flex-direction: row; align-items: center; gap: 8px; justify-content: space-between; }
.mpg-hud .mpg-score span { font-size: .6rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mpg-hud .mpg-score strong { font-size: 1rem; line-height: 1.2; }
.mpg-overlay .mpg-hud .mpg-meter { position: static; width: auto; min-width: 0; min-height: 44px; padding: 6px 10px; align-content: center; box-sizing: border-box; flex: 0 1 150px; pointer-events: auto; }
.mpg-hud .mpg-meter-head { font-size: .65rem; gap: 6px; align-items: center; }
.mpg-hud .mpg-recharge { padding: 3px 6px; font-size: .68rem; }
.mpg-hud .mpg-board { position: static; margin-left: auto; width: 210px; max-height: 64px; overflow-y: auto; box-sizing: border-box; pointer-events: auto; }
.mpg-hud .mpg-board li { grid-template-columns: 10px minmax(0, 1fr) auto; }
.mpg-hud .mpg-board li span, .mpg-hud .mpg-board li b { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.mpg-hud .mpg-board li b { max-width: 110px; }
.mpg-status .mpg-qbtn { display: none; }
.mpg-overlay.has-touch .mpg-status .mpg-qbtn { display: inline-flex; align-items: center; justify-content: center; gap: 4px; align-self: stretch; min-height: 34px; padding: 4px 8px; border-radius: 12px; border: 1px solid rgba(250,204,21,.65); background: rgba(113,83,8,.85); color: #fff; font-size: .7rem; font-weight: 700; pointer-events: auto; touch-action: none; }
.mpg-overlay.has-touch .mpg-hud .mpg-board { display: none; }
.mpg-hud .mpg-toasts { grid-column: 1 / -1; position: static; transform: none; height: 50px; min-width: 0; display: flex; flex-direction: column; align-items: center; gap: 4px; overflow: hidden; }
.mpg-hud .mpg-toasts div { box-sizing: border-box; max-width: 100%; padding: 3px 10px; line-height: 16px; border-width: 1px; font-size: .72rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: none; animation: mpg-toast-fade 2.4s both; }
@keyframes mpg-toast-fade { 0% { opacity: 0; transform: translateY(-4px); } 10%, 75% { opacity: 1; transform: none; } 100% { opacity: 0; } }
.mpg-overlay .mpg-hint { box-sizing: border-box; max-width: calc(100vw - 24px); width: max-content; font-size: .7rem; }
.mpg-overlay .mpg-stick-zone { top: auto; height: 170px; width: 42%; }
.mpg-overlay.has-touch.touch-local-stick .mpg-stick-zone { display: none; }
.mpg-overlay .mpg-touch.no-stick .mpg-btns { display: flex; justify-content: center; gap: 10px; }
.mpg-overlay .mpg-touch.no-stick .mpg-btns button { width: 70px; height: 64px; }
.mpg-overlay .mpg-touch.no-stick .mpg-btns .b-main { width: 100px; }
.mpg-overlay .mpg-question { z-index: 8; }
.mpg-overlay .mpg-results { z-index: 9; }
.mpg-overlay .mpg-results-card ol > li { grid-template-columns: 20px 28px minmax(0, 1fr) auto; gap: 6px; }
.mpg-overlay .mpg-results-card ol > li strong, .mpg-overlay .mpg-results-card ol > li b { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mpg-overlay .mpg-results-card ol > li b { max-width: 40vw; }
.mpg-overlay .mpg-results-card ol > li em { grid-column: 3 / -1; min-width: 0; }
.mpg-overlay .mpg-results-card ol > li em:empty { display: none; }
.mpg-overlay .mpg-q-prompt, .mpg-overlay .mpg-q-options button span { min-width: 0; overflow-wrap: anywhere; }
.mpg-overlay .mpg-q-card, .mpg-overlay .mpg-results-card { max-height: calc(100dvh - 24px); overflow-y: auto; box-sizing: border-box; }
@media (max-width: 520px) {
    .mpg-hud .mpg-chip strong { font-size: .78rem; }
    .mpg-hud .mpg-chip span { font-size: .62rem; }
    .mpg-overlay .mpg-hud .mpg-score { flex: 1 1 85px; padding: 4px 6px; }
    .mpg-overlay .mpg-hud .mpg-meter { flex: 1 1 100px; padding: 4px 6px; }
    .mpg-overlay .mpg-stick { width: 112px; height: 112px; }
    .mpg-overlay .mpg-btns { grid-template-columns: repeat(var(--cols, 2), 52px); gap: 8px; }
    .mpg-overlay .mpg-btns button { width: 52px; height: 52px; font-size: .72rem; }
    .mpg-overlay .mpg-btns .b-main { width: 62px; height: 62px; }
}
@media (max-height: 480px) and (orientation: landscape) {
    .mpg-hud .mpg-chip { flex-direction: row; gap: 10px; align-items: center; }
    .mpg-hud .mpg-chip span { max-width: 40vw; }
    .mpg-hud .mpg-toasts { height: 24px; }
    .mpg-hud .mpg-toasts div:nth-child(n+2) { display: none; }
    .mpg-overlay .mpg-stick { width: 96px; height: 96px; }
    .mpg-overlay .mpg-btns { grid-template-columns: repeat(var(--cols, 2), 44px); gap: 6px; }
    .mpg-overlay .mpg-btns button { width: 44px; height: 44px; font-size: .65rem; }
    .mpg-overlay .mpg-btns .b-main { width: 52px; height: 52px; }
    .mpg-overlay .mpg-touch.no-stick .mpg-btns button { width: 70px; height: 52px; }
    .mpg-overlay .mpg-stick-zone { height: 130px; }
}

/* Tutorial */
#tutorial-banner { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; grid-column: 1 / -1; border: 1px solid var(--accent-primary); }
#tutorial-banner.hidden, #tutorial-card.hidden { display: none; }
.tutorial-banner-icon { font-size: 1.8rem; color: var(--accent-primary); }
.tutorial-banner-text { flex: 1 1 240px; }
.tutorial-banner-text h3, .tutorial-banner-text p { margin: 0 0 4px; }
.tutorial-banner-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.tutorial-spot { position: fixed; z-index: 20000; border-radius: 12px; pointer-events: none; box-shadow: 0 0 0 9999px rgba(5, 8, 20, .68); outline: 3px solid var(--accent-primary); }
.tutorial-spot[hidden] { display: none; }
#tutorial-root .tutorial-card { position: fixed; z-index: 20001; left: 12px; top: 12px; bottom: auto; transform: none; box-sizing: border-box; min-width: 0; width: min(500px, calc(100vw - 24px)); max-height: calc(100dvh - 24px); overflow-y: auto; padding: 16px; border-radius: 16px; background: var(--bg-secondary, #1e293b); color: var(--text-primary); border: 1px solid var(--accent-primary); box-shadow: 0 12px 40px rgba(0, 0, 0, .5); display: grid; gap: 8px; }
#tutorial-root .tutorial-card { overscroll-behavior: contain; overflow-wrap: anywhere; }
#tutorial-root [data-tour][hidden] { display: none; }
#tutorial-root .tutorial-buttons button { min-height: 44px; min-width: 64px; }
body.tutorial-active { overscroll-behavior: contain; }
@media (max-width: 600px) {
    #tutorial-root .tutorial-card { padding: 12px 14px; gap: 6px; border-radius: 14px; }
    #tutorial-root .tutorial-card h3 { font-size: 1.02rem; }
    #tutorial-root .tutorial-card p { font-size: .9rem; line-height: 1.4; }
}
#tutorial-root .tutorial-card h3, #tutorial-root .tutorial-card p { margin: 0; }
.tutorial-progress { height: 4px; border-radius: 4px; background: var(--border-glass); overflow: hidden; }
.tutorial-progress-bar { height: 100%; background: var(--accent-primary); transition: width .25s ease; }
.tutorial-count { font-size: .78rem; color: var(--text-secondary); }
.tutorial-buttons { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.tutorial-spacer { flex: 1; }
.empty-state-cta { display: grid; gap: 10px; justify-items: center; text-align: center; padding: 16px; }
.empty-state-cta p { margin: 0; }
.view-header { flex-wrap: wrap; gap: 8px; }
.about-card { display: grid; gap: 8px; margin-bottom: 14px; }
.about-card h3, .about-card p { margin: 0; }
.about-list { margin: 0; padding-left: 20px; display: grid; gap: 8px; }
.about-card a { color: var(--accent-primary); word-break: break-all; }
.friends-card { display: grid; gap: 10px; margin-bottom: 14px; }
.friends-card h3 { margin: 0; }
.friend-add-form { display: flex; gap: 8px; flex-wrap: wrap; }
.friend-add-form input { flex: 1 1 200px; min-width: 0; }
#friend-status.error { color: #f87171; }
.friend-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.friend-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 8px 10px; border-radius: 12px; background: var(--bg-glass-hover); border: 1px solid var(--border-glass); }
.friend-row strong { flex: 1 1 100px; min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.friend-initial { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; color: #fff; font-weight: 800; background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)); flex: 0 0 auto; }
.friend-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.friend-profile-head { display: flex; align-items: center; gap: 14px; }
.friend-profile-head > div { flex: 1; min-width: 0; }
.friend-profile-head h3 { margin: 0; overflow-wrap: anywhere; }
.profile-real-name { display: block; margin-top: 3px; font-size: .85rem; color: var(--text-secondary); overflow-wrap: anywhere; }
.flashcard-answer-image { display: block; max-width: 100%; max-height: 220px; object-fit: contain; margin: 12px auto 0; border-radius: 8px; }
.flashcard-back { overflow-y: auto; }
.review-study-set { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 12px; margin-top: 14px; border: 1px solid var(--border-glass); border-radius: 12px; }
.chess-panel { --chess-info-space: 134px; position: absolute; z-index: 2; top: var(--chess-top, 112px); bottom: 16px; left: 12px; right: 12px; display: flex; flex-direction: column; align-items: center; justify-content: safe center; gap: 10px; overflow-y: auto; color: #f1f1df; container-type: size; }
.chess-status { max-width: 620px; margin: 0; text-align: center; font-size: .9rem; line-height: 1.4; text-shadow: 0 1px 4px #14281d; }
.mpg-chess { background-color: #273c31; background-image: radial-gradient(ellipse at 12% 25%, #a8be6340 0, transparent 48%), radial-gradient(ellipse at 90% 80%, #81aaa138 0, transparent 45%), repeating-linear-gradient(45deg, #ffffff03 0 1px, transparent 1px 24px), linear-gradient(135deg, #344a3c, #1d2b27); }
.mpg-chess .mpg-canvas { display: none; }
.mpg-chess .mpg-toasts:empty { display: none; }
.chess-board { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); grid-template-rows: repeat(8, minmax(0, 1fr)); width: min(100%, 640px, calc(100dvh - var(--chess-top, 112px) - 160px)); width: min(100%, 640px, calc(100cqh - var(--chess-info-space))); aspect-ratio: 1; flex: 0 0 auto; border: 6px solid #43563a; border-radius: 6px; overflow: hidden; box-sizing: border-box; box-shadow: 0 18px 45px #0b1b1c66, 0 0 0 1px #c7d3a52b; }
.chess-square { position: relative; display: grid; place-items: center; padding: 0; border: 0; border-radius: 0; min-width: 0; min-height: 0; height: 100%; line-height: 1; color: #111827; touch-action: none; user-select: none; transition: background-color .12s; }
.chess-square.light { background: #ebecd0; }
.chess-square.dark { background: #779556; }
.chess-square.light.last-move { background: #f4f68c; }
.chess-square.dark.last-move { background: #bacb55; }
.chess-square.light.selected, .chess-square.dark.selected { background: #f1d66b; }
.chess-square.in-check { background-image: radial-gradient(ellipse, #e64736 0, #e6473677 40%, transparent 75%); }
.chess-square:hover { transform: none; box-shadow: inset 0 0 0 2px #fff5; }
.chess-square.legal::before { content: ''; width: 24%; aspect-ratio: 1; border-radius: 50%; background: #253b2c44; position: absolute; pointer-events: none; }
.chess-square.capture::before { content: ""; position: absolute; inset: 4%; border: 5px solid #253b2c66; border-radius: 50%; pointer-events: none; z-index: 1; }
.chess-piece { position: relative; width: 85%; height: 85%; pointer-events: none; filter: drop-shadow(0 2px 1px #18221a40); }
.white-piece { --piece-fill: #f8f4e7; --piece-stroke: #3c4038; --piece-shine: #ffffff; }
.black-piece { --piece-fill: #454943; --piece-stroke: #222820; --piece-shine: #798174; }
.chess-square::after { content: attr(data-file); position: absolute; right: 3px; bottom: 2px; font: 700 clamp(9px, 1.8cqw, 12px) system-ui; color: #496137; pointer-events: none; }
.chess-rank { position: absolute; left: 3px; top: 2px; font: 700 clamp(9px, 1.8cqw, 12px) system-ui; color: #496137; pointer-events: none; }
.chess-square.dark::after, .chess-square.dark .chess-rank { color: #f4f2d8; }
.chess-square.dragging .chess-piece { opacity: .25; }
.chess-drag-ghost { position: fixed; z-index: 20; left: -28px; top: -28px; width: 56px; height: 56px; pointer-events: none; }
.offline-notice { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 10px 0; padding: 10px 14px; background: var(--bg-glass); border: 1px solid var(--border-glass); border-radius: 12px; font-size: .85rem; }
.workspace-child, .settings-tabs { display: none !important; }
.workspace-tabs { display: flex; gap: 6px; overflow-x: auto; padding: 8px 0 12px; margin-bottom: 6px; }
.workspace-tab { flex: 0 0 auto; border: 1px solid var(--border-glass); background: var(--bg-glass); color: var(--text-secondary); padding: 9px 14px; border-radius: 10px; font: inherit; white-space: nowrap; cursor: pointer; }
.workspace-tab.selected { color: var(--text-primary); background: var(--bg-glass-hover); border-color: var(--accent-primary); }
.deck-editor-toolbar { flex-wrap: wrap; }
.deck-editor-bulk-panel textarea { width: 100%; margin: 8px 0; }
.deck-editor-card small { display: block; }
.deck-editor-card .actions { flex-wrap: wrap; gap: 6px; }
.page-guide { margin: 6px 0 0; max-width: 68ch; color: var(--text-secondary); line-height: 1.5; font-size: .95rem; }
#top-header .header-left { min-width: 0; }
#top-header { align-items: flex-start; gap: 16px; }
.workspace-tabs { flex-wrap: wrap; overflow: visible; gap: 8px; padding: 12px var(--spacing-xl); }
.workspace-tab { min-height: 44px; color: var(--text-primary); font-weight: 600; background: var(--bg-secondary); }
.workspace-tab.selected { border-width: 2px; padding: 8px 13px; text-decoration: underline; text-underline-offset: 5px; }
.view > .view-header { flex-wrap: wrap; gap: 12px; }
.settings-hint, .community-status, .practice-test-progress { line-height: 1.6; font-size: .95rem; }
.modal-content .form-group label { font-weight: 600; }
.modal-content textarea, .modal-content select, .practice-test-written textarea { font-size: 1rem; line-height: 1.5; }
.card-options { padding: 14px; border: 1px solid var(--border-glass); border-radius: 12px; margin-bottom: 16px; background: var(--bg-secondary); }
.card-options summary { font-weight: 700; cursor: pointer; min-height: 28px; }
.card-options[open] summary { margin-bottom: 14px; }
.card-attachment { display: grid; gap: 8px; padding: 10px; margin-top: 10px; border: 1px solid var(--border-glass); border-radius: 10px; overflow-wrap: anywhere; text-align: left; }
.card-attachment a { color: var(--text-primary); text-decoration: underline; }
.card-attachment audio { max-width: 100%; width: 100%; }
.tutorial-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.tutorial-jump { display: block; flex: 0 1 220px; min-width: 0; font-size: .85rem; }
.tutorial-jump select { width: 100%; min-height: 36px; font-size: 1rem; padding: 4px 8px; text-overflow: ellipsis; }
.guest-join { margin: 18px 0 0; padding: 14px; border: 1px solid var(--border-glass); border-radius: 12px; }
.guest-start-btn { margin-top: 18px; min-height: 48px; font-size: 1rem; }
.guest-start-hint { margin: 8px 0 0; text-align: center; }
.auth-divider { display: flex; align-items: center; gap: 10px; margin: 18px 0 10px; color: var(--text-secondary); font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; }
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: var(--border-glass); }
.guest-join summary { cursor: pointer; font-weight: 700; min-height: 30px; }
.guest-join[open] summary { margin-bottom: 12px; }
#guest-game-lobby { width: min(900px, calc(100vw - 24px)); margin: 24px auto; }
#guest-game-lobby [data-action="view-profile"] { display: none; }
.admin-notice-history { margin-top: 24px; }
.mpg-hint { white-space: normal; max-width: min(900px, 90vw); line-height: 1.5; }
#tutorial-root .tutorial-card { max-height: 58dvh; width: min(500px, calc(100vw - 24px)); }
#tutorial-root .tutorial-text { line-height: 1.6; }
@media (max-width: 600px), (max-height: 600px) {
    #tutorial-root .tutorial-card { padding: 12px 14px; gap: 6px; }
    #tutorial-root .tutorial-text { font-size: .88rem; line-height: 1.42; }
    #tutorial-root .tutorial-buttons button { min-height: 40px; }
}
@media (max-width: 768px) {
    .page-guide { font-size: .9rem; }
    #top-header { flex-wrap: wrap; }
    .workspace-tabs { padding-left: max(var(--spacing-sm), env(safe-area-inset-left)); padding-right: max(var(--spacing-sm), env(safe-area-inset-right)); }
    .workspace-tab { flex: 1 1 130px; white-space: normal; text-align: center; }
    .view .primary-btn, .view .secondary-btn { min-height: 44px; }
}
@media (max-width: 520px) { .offline-notice { flex-wrap: wrap; } }
.chess-square:focus-visible { outline: 3px solid #38bdf8; outline-offset: -3px; }
.chess-rules { max-width: 620px; margin: 0; font-size: .8rem; line-height: 1.5; text-align: center; padding: 0 8px; }
@media (max-width: 520px) and (min-height: 521px) { .chess-panel { --chess-info-space: 180px; } }
@media (max-height: 520px) {
    .chess-panel { top: var(--chess-top, 64px); bottom: 8px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(140px, .7fr); grid-template-rows: 1fr auto 1fr; justify-items: center; align-items: center; gap: 8px 18px; }
    .chess-board { grid-column: 1; grid-row: 1 / 4; width: min(100%, calc(100dvh - var(--chess-top, 64px) - 24px)); width: min(100%, calc(100cqh - 12px)); }
    .chess-status, .chess-question, .chess-rules { grid-column: 2; }
    .chess-status { align-self: end; font-size: .8rem; }
    .chess-rules { align-self: start; font-size: .7rem; }
    .chess-square { font-size: clamp(16px, 6dvh, 32px); }
}
.friend-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(120px, 100%), 1fr)); gap: 8px; }
.friend-stat { display: grid; gap: 2px; padding: 10px; border-radius: 12px; background: var(--bg-glass-hover); border: 1px solid var(--border-glass); text-align: center; }
.friend-stat small { color: var(--text-secondary); }
.friend-bio { margin: 0; overflow-wrap: anywhere; }
.friend-chips { display: flex; gap: 6px; flex-wrap: wrap; }
.friend-chip { padding: 4px 10px; border-radius: 999px; background: var(--bg-glass-hover); border: 1px solid var(--border-glass); font-size: .85rem; }
.settings-check { display: flex; gap: 8px; align-items: center; min-width: 0; overflow-wrap: anywhere; }
.link-btn { background: none; border: 0; padding: 0; color: var(--accent-primary); font: inherit; font-weight: 700; cursor: pointer; text-decoration: underline; }
.deck-author { display: block; margin-top: 2px; }
.study-leaderboard-row .secondary-btn { padding: 4px 10px; font-size: .8rem; }
.user-profile-overlay { position: fixed; inset: 0; z-index: 9000; display: grid; place-items: center; padding: 14px; background: rgba(0, 0, 0, .55); }
.user-profile-modal { width: min(560px, 100%); max-height: 90vh; max-height: 90dvh; overflow-y: auto; display: grid; gap: 12px; }
@media (max-width: 420px) { .scheme-picker { grid-template-columns: repeat(auto-fit, minmax(min(92px, 100%), 1fr)); } .scheme-option { min-height: 64px; font-size: .78rem; } }
.user-profile-modal .friend-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.own-profile-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.own-profile-actions button { flex: 1 1 180px; justify-content: center; }
@media (max-width: 520px) {
    .study-leaderboard-row { grid-template-columns: 28px 36px minmax(0, 1fr); gap: 8px; padding: 10px; }
    .study-leaderboard-time { grid-column: 2 / -1; font-size: .85rem; }
    .study-leaderboard-tabs { flex-wrap: wrap; }
    .friend-profile-head { flex-wrap: wrap; }
    .friend-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .admin-actions { width: 100%; }
}
.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr)); gap: var(--spacing-md); align-items: start; }
.settings-grid > .glass-card { display: flex; flex-direction: column; gap: var(--spacing-sm); }
.settings-grid > .glass-card > h2 { margin: 0 0 var(--spacing-xs, 4px); font-size: 1.15rem; }
.settings-grid > .glass-card p { margin: 0; }
.settings-grid .form-group { margin: 0; }
.settings-grid .primary-btn, .settings-grid .secondary-btn { align-self: flex-start; }
.settings-actions { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); }
.settings-grid .danger-zone { margin-top: var(--spacing-sm); }
.settings-grid .danger-zone h4 { margin: 0 0 var(--spacing-sm); }
.settings-grid .danger-btn { max-width: 100%; white-space: normal; }
#public-profile-card, .settings-grid > .glass-card { min-width: 0; }
#public-profile-card input, #public-profile-card select, #public-profile-card textarea { max-width: 100%; }
#public-bio { width: 100%; resize: vertical; }

/* Anki-style queue counters (new / learning / review) */
#study-progress .anki-count { display: inline-block; min-width: 1.6em; padding: 1px 6px; border-radius: 999px; font-weight: 700; font-variant-numeric: tabular-nums; text-align: center; }
#study-progress .anki-new { color: #60a5fa; background: rgba(96,165,250,.14); }
#study-progress .anki-learn { color: #f87171; background: rgba(248,113,113,.14); }
#study-progress .anki-review { color: #4ade80; background: rgba(74,222,128,.14); }

/* Clickable leaderboard entries + character avatars on friend rows */
button.podium-spot { background: none; border: 0; padding: 4px; color: inherit; font: inherit; cursor: pointer; border-radius: 14px; transition: transform .15s ease, background .15s ease; }
button.podium-spot:hover, button.podium-spot:focus-visible { background: var(--bg-glass-hover); transform: translateY(-2px); }
.study-leaderboard-name { color: inherit; text-decoration: none; text-align: left; }
.study-leaderboard-name:hover, .study-leaderboard-name:focus-visible { color: var(--accent-primary); text-decoration: underline; }
.friend-row .friend-avatar { width: 40px; height: 40px; flex: 0 0 auto; }

/* ===== Home widget, streak hero & leaderboard upgrades ===== */
.home-widget { display: grid; gap: 14px; min-width: 0; }
.home-widget-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.home-widget-head h3 { margin: 0; }
.home-widget-head-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.home-widget-head-actions .secondary-btn { padding: 6px 12px; font-size: .85rem; }
.home-widget-settings { display: grid; gap: 12px; padding: 12px; border: 1px dashed var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass); }
.home-widget-settings.hidden { display: none; }
.home-widget-options { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 190px), 1fr)); gap: 8px 14px; }
.home-widget-options select { padding: 4px 8px; border-radius: 8px; }
.home-widget-install { display: grid; gap: 6px; justify-items: start; }
.home-widget-install p { margin: 0; color: var(--text-secondary); font-size: .85rem; }
.home-widget-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 12px; align-items: stretch; }
.home-widget-section { display: grid; gap: 10px; align-content: start; min-width: 0; padding: 12px; border: 1px solid var(--border-glass); border-radius: var(--border-radius-md); background: var(--bg-glass); }
.home-widget-habit { grid-column: span 2; }
@media (max-width: 760px) { .home-widget-habit { grid-column: auto; } }
.home-widget-section-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.home-widget-section-head h4 { margin: 0; font-size: .95rem; }
.home-widget-section-head h4 i { color: var(--accent-primary); margin-right: 4px; }
.home-widget-section-head .link-btn { font-size: .82rem; text-decoration: none; }
.home-widget-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.home-widget-list li { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-width: 0; padding: 6px 8px; border-radius: 8px; background: var(--bg-glass-hover); }
.home-widget-list li > div { display: grid; min-width: 0; }
.home-widget-list strong, .home-widget-list a { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .9rem; }
.home-widget-list a { color: var(--text-primary); text-decoration: none; min-width: 0; }
.home-widget-list small { color: var(--text-muted); font-size: .75rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.home-widget-due { flex: 0 0 auto; padding: 2px 8px; border-radius: 999px; font-size: .75rem; font-weight: 700; color: var(--text-secondary); background: var(--bg-glass); }
.home-widget-due.is-soon { color: var(--status-warning); }
.home-widget-due.is-overdue { color: var(--status-danger, #ff6b6b); }
.home-widget-gpa { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.home-widget-gpa div { display: grid; padding: 6px 10px; border-radius: 8px; background: var(--bg-glass-hover); }
.home-widget-gpa b { font-size: 1.3rem; color: var(--accent-primary); font-variant-numeric: tabular-nums; }
.home-widget-gpa small { color: var(--text-muted); font-size: .75rem; }
.home-widget-grade { flex: 0 0 auto; font-weight: 800; font-size: .8rem; font-variant-numeric: tabular-nums; }
.home-widget-grade.grade-a { color: var(--status-success, #4caf50); }
.home-widget-grade.grade-b { color: var(--accent-primary); }
.home-widget-grade.grade-c { color: var(--status-warning); }
.home-widget-grade.grade-d, .home-widget-grade.grade-f { color: var(--status-danger, #ff6b6b); }
.home-widget-empty { margin: 0; color: var(--text-secondary); font-size: .9rem; }
.home-widget-goal { display: grid; gap: 6px; }

.streak-hero { display: flex; align-items: center; gap: 14px; min-width: 0; }
.streak-flame { position: relative; flex: 0 0 auto; display: grid; place-items: center; width: 64px; height: 64px; border-radius: 50%; background: radial-gradient(circle at 50% 65%, rgba(255,170,60,.28), transparent 70%); }
.streak-flame i { font-size: 2.6rem; color: #ff9b3d; filter: drop-shadow(0 2px 8px rgba(255,120,40,.45)); }
.streak-flame b { position: absolute; bottom: 8px; color: #fff; font-size: 1rem; font-weight: 900; text-shadow: 0 1px 3px rgba(0,0,0,.6); font-variant-numeric: tabular-nums; }
.streak-hero.is-safe .streak-flame i { animation: streak-flicker 1.8s ease-in-out infinite; }
.streak-hero.is-risk .streak-flame i { color: #ffbf66; opacity: .75; }
.streak-hero.is-cold .streak-flame i { color: var(--text-muted); filter: none; opacity: .55; }
@keyframes streak-flicker { 0%, 100% { transform: scale(1) rotate(-2deg); } 50% { transform: scale(1.07) rotate(2deg); } }
@media (prefers-reduced-motion: reduce) { .streak-hero.is-safe .streak-flame i { animation: none; } }
.streak-hero-text { display: grid; gap: 3px; min-width: 0; flex: 1; }
.streak-hero-text strong { font-size: 1.15rem; }
.streak-hero-text > span { color: var(--text-secondary); font-size: .88rem; }
.streak-hero.is-risk .streak-hero-text > span { color: var(--status-warning); font-weight: 600; }
.streak-milestone { display: grid; gap: 3px; margin-top: 4px; }
.streak-milestone-bar { display: block; height: 6px; border-radius: 999px; overflow: hidden; background: var(--bg-glass-hover); }
.streak-milestone-bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #ffb347, #ff6a3d); }
.streak-milestone small { color: var(--text-muted); font-size: .75rem; }
.streak-week { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 4px; }
.streak-week li { display: grid; justify-items: center; gap: 3px; padding: 6px 0; border-radius: 10px; background: var(--bg-glass-hover); font-size: .72rem; color: var(--text-muted); }
.streak-week li i { font-size: 1rem; }
.streak-week li.hit i { color: #ff8a3d; }
.streak-week li.part i { color: #ffbf66; }
.streak-week li.miss i { opacity: .35; }
.streak-week li.today { outline: 2px solid var(--accent-primary); outline-offset: -2px; color: var(--text-primary); font-weight: 700; }
.leaderboard-habit-card #leaderboard-streak-hero { display: grid; gap: 12px; }
.streak-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.streak-stat { display: grid; justify-items: center; gap: 2px; padding: 8px 6px; border-radius: 10px; background: var(--bg-glass-hover); text-align: center; min-width: 0; }
.streak-stat i { color: var(--accent-primary); }
.streak-stat b { font-size: 1rem; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.streak-stat small { color: var(--text-muted); font-size: .72rem; }

.study-leaderboard-heading .secondary-btn { flex: 0 0 auto; padding: 6px 12px; font-size: .85rem; }
.study-leaderboard-filters { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; margin-top: var(--spacing-md); }
.study-leaderboard-filters .study-leaderboard-tabs { flex-wrap: wrap; }
.study-leaderboard-filters .study-leaderboard-tabs button { padding: 6px 12px; font-size: .85rem; }
.study-leaderboard-me { display: flex; align-items: center; gap: 10px; margin-top: 10px; padding: 10px 12px; border-radius: var(--border-radius-sm); border: 1px solid color-mix(in srgb, var(--accent-primary) 45%, var(--border-glass)); background: color-mix(in srgb, var(--accent-primary) 9%, var(--bg-glass)); font-size: .9rem; }
.study-leaderboard-me.hidden { display: none; }
.study-leaderboard-me i { color: var(--accent-primary); }
.study-leaderboard-streak { display: inline-flex; align-items: center; gap: 3px; margin-left: 6px; padding: 0 7px; border-radius: 999px; color: #ff8a3d; font-size: .72rem; font-weight: 800; background: rgba(255,138,61,.13); vertical-align: middle; }
.study-leaderboard-profile-spacer { display: block; }
.study-leaderboard-row { grid-template-columns: 40px 38px minmax(0, 1fr) auto auto; }
@media (max-width: 640px) {
    .study-leaderboard-filters { flex-direction: column; }
    .study-leaderboard-filters .study-leaderboard-tabs { width: 100%; display: grid; grid-template-columns: repeat(auto-fit, minmax(0, 1fr)); }
    .study-leaderboard-heading { flex-direction: row; align-items: center; }
    .study-leaderboard-row { grid-template-columns: 28px 36px minmax(0, 1fr) auto; grid-template-areas: none; gap: 8px; padding: 10px; }
    .study-leaderboard-row > .study-leaderboard-time { grid-column: auto; font-size: .82rem; }
    .study-leaderboard-row > span:last-child { grid-column: auto; }
    .study-leaderboard-profile span, .study-leaderboard-profile-spacer { display: none; }
    .study-leaderboard-row .study-leaderboard-profile { grid-column: 4; grid-row: 1; display: none; }
}
@media (max-width: 520px) {
    .streak-flame { width: 52px; height: 52px; }
    .streak-flame i { font-size: 2.1rem; }
    .streak-flame b { bottom: 5px; font-size: .9rem; }
    .streak-hero-text strong { font-size: 1.02rem; }
    .home-widget-section { padding: 10px; }
    .home-widget-head-actions { width: 100%; }
    .home-widget-head-actions > * { flex: 1; }
}
body.compact-ui .home-widget { gap: 10px; }
body.compact-ui .home-widget-section { padding: 9px; gap: 8px; }
body.compact-ui .streak-flame { width: 48px; height: 48px; }
body.compact-ui .streak-flame i { font-size: 2rem; }
body.compact-ui .streak-flame b { bottom: 4px; font-size: .85rem; }
.study-leaderboard-main strong { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; min-width: 0; }
.study-leaderboard-main strong > .study-leaderboard-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-align: left; }
.study-leaderboard-main strong > .you-badge, .study-leaderboard-main strong > .study-leaderboard-streak { flex: 0 0 auto; margin-left: 0; }
.study-leaderboard-time { white-space: nowrap; }

/* Deck class / test tagging */
.deck-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 6px 0 2px; }
.deck-chip { display: inline-flex; align-items: center; gap: 5px; max-width: 100%; padding: 3px 9px; border-radius: 999px; font-size: 0.78rem; font-weight: 600; background: rgba(99, 102, 241, 0.14); color: var(--accent-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; vertical-align: middle; }
.deck-chip.private { background: rgba(148, 163, 184, 0.16); color: var(--text-secondary); }
.deck-link-edit { margin: 4px 0 10px; }
.deck-link-edit summary { cursor: pointer; font-size: 0.85rem; color: var(--text-secondary); padding: 6px 0; min-height: 32px; list-style: none; }
.deck-link-edit summary::-webkit-details-marker { display: none; }
.deck-link-edit[open] summary { color: var(--accent-primary); }
.deck-link-edit .deck-link-fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(150px, 100%), 1fr)); gap: 8px; }
.deck-link-edit label { display: grid; gap: 4px; font-size: 0.8rem; color: var(--text-secondary); min-width: 0; }
.deck-link-edit select { width: 100%; min-width: 0; font-size: 16px; }
#import-deck-course, #import-deck-assessment { width: 100%; min-width: 0; }
.deck-link-hint { margin: -6px 0 14px; font-size: 0.82rem; color: var(--text-secondary); }
@media (max-width: 560px) {
    .deck-link-fields.row-group { flex-direction: column; }
    .deck-link-fields.row-group .half-width { width: 100%; }
}
.deck-card .deck-tags { justify-content: center; }
.deck-chip i, .deck-link-edit summary i, .deck-link-hint i { font-size: 0.8em !important; width: auto !important; height: auto !important; margin: 0 !important; background: none !important; padding: 0 !important; box-shadow: none !important; display: inline !important; }

/* Flashcard recommendations for upcoming tests */
.deck-recommendations { margin: 0 0 1rem; }
.deck-recommendations h3 { margin: 0 0 .25rem; display: flex; gap: .5rem; align-items: center; }
.deck-recommendation-list { display: grid; gap: .6rem; margin-top: .6rem; }
.deck-recommendation { display: flex; align-items: center; justify-content: space-between; gap: .75rem; padding: .7rem .85rem; border-radius: 12px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08); }
.deck-recommendation > div { display: grid; gap: .15rem; min-width: 0; }
.deck-recommendation strong, .deck-recommendation span { overflow-wrap: anywhere; }
.deck-recommendation span, .deck-recommendation small { opacity: .8; font-size: .85rem; }
.deck-recommendation .primary-btn { flex-shrink: 0; }
.study-priority-actions { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .4rem; }
.study-time-logged { display: block; opacity: .85; }
.anki-count { white-space: nowrap; }
.solver-course-breakdown { list-style: none; padding: 0; margin: .75rem 0 0; display: grid; gap: .45rem; text-align: left; }
.solver-course-breakdown li { display: grid; gap: .1rem; padding: .5rem .65rem; border-radius: 10px; background: rgba(255,255,255,.05); }
.solver-course-breakdown span { font-size: .85rem; opacity: .85; }
#solver-output-percentage { font-size: 1.15rem; }
@media (max-width: 520px) {
    .deck-recommendation { flex-direction: column; align-items: stretch; }
}
.multiplayer-shop .shop-grid > .shop-rarity-title { justify-content: flex-start; margin-top: 10px; padding-bottom: 4px; color: var(--rarity, var(--text-secondary)); border-bottom: 1px solid color-mix(in srgb, var(--rarity, #94a3b8) 40%, transparent); }
.shop-search { grid-column: 1 / -1; display: flex; align-items: center; gap: 9px; min-width: 0; padding: 8px 11px; border: 1px solid var(--border-glass); border-radius: 11px; background: var(--bg-glass); color: var(--text-secondary); }
.shop-search:focus-within { border-color: var(--accent-primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-primary) 18%, transparent); }
.shop-search input { width: 100%; min-width: 0; padding: 4px 0; border: 0; outline: 0; background: transparent; color: var(--text-primary); box-shadow: none; }
.shop-search input:focus { border: 0; box-shadow: none; }
.shop-grid [hidden] { display: none !important; }
.shop-grid .shop-search-empty { grid-column: 1 / -1; margin: 0; padding: 20px; color: var(--text-secondary); text-align: center; }
.multiplayer-shop .shop-grid > .shop-search { grid-column: 1 / -1; }
.multiplayer-shop-item { min-width: 0; }
.multiplayer-shop-item > div strong { overflow-wrap: anywhere; }
.mpg-overlay .mpg-hud { width: auto; }
.mpg-overlay .mpg-status { flex-wrap: wrap; }
.mpg-overlay .mpg-board { max-width: 35vw; }
@media (max-width: 380px) {
    .mpg-hud .mpg-top { grid-template-columns: minmax(0, 1fr) auto auto; gap: 4px; }
    .mpg-hud .mpg-chip { padding: 4px 6px; }
    .mpg-hud .mpg-timer { padding: 5px 7px; font-size: .78rem; }
    .mpg-hud .mpg-actions button { padding: 6px; font-size: .68rem; }
    .mpg-hud .mpg-practice-indicator { font-size: .58rem; }
}
@media (max-height: 520px) and (orientation: landscape) {
    .mpg-overlay .mpg-hud { top: max(4px, env(safe-area-inset-top)); left: max(6px, env(safe-area-inset-left)); right: max(6px, env(safe-area-inset-right)); gap: 3px; }
    .mpg-hud .mpg-top { grid-template-columns: minmax(0, 1fr) auto auto; }
    .mpg-hud .mpg-chip { flex-direction: row; align-items: center; gap: 6px; padding: 3px 7px; }
    .mpg-hud .mpg-timer { padding: 4px 8px; }
    .mpg-hud .mpg-actions button { padding: 5px 7px; }
    .mpg-hud .mpg-toasts { height: 22px; }
    .mpg-overlay.has-touch .mpg-touch { padding-bottom: max(6px, env(safe-area-inset-bottom)); }
    .mpg-overlay .mpg-hint { display: none; }
}
@media (max-width: 680px) and (orientation: portrait) {
    .multiplayer-shop { padding: clamp(10px, 3vw, 18px); }
    .multiplayer-shop .view-header { align-items: flex-start; }
    .mpg-overlay .mpg-hud .mpg-status { gap: 4px; }
    .mpg-overlay .mpg-hud .mpg-score, .mpg-overlay .mpg-hud .mpg-meter { flex: 1 1 42%; }
    .mpg-overlay .mpg-hud .mpg-toasts { height: 36px; }
}
.mpg-overlay { min-height: 100dvh; overscroll-behavior: none; }
.mpg-overlay .mpg-canvas, .mpg-overlay .mpg-touch, .mpg-overlay .mpg-stick-zone { touch-action: none; }
.mpg-overlay [hidden] { display: none !important; }
.mpg-match-details { display: grid; gap: 2px; min-width: 0; }
.mpg-hud .mpg-top { align-items: start; }
.mpg-hud .mpg-actions { flex-wrap: wrap; justify-content: flex-end; min-width: 0; pointer-events: auto; }
.mpg-hud .mpg-actions > button { min-height: 44px; }
.mpg-hud .mpg-timer { align-self: start; min-height: 44px; display: grid; place-items: center; }
.mpg-overlay .mpg-hud .mpg-board { z-index: 3; }
.mpg-overlay.hud-collapsed .mpg-chip { align-self: center; border: 0; background: none; padding: 4px 0; backdrop-filter: none; }
.mpg-overlay.hud-collapsed .mpg-chip strong { font-size: .85rem; }
.mpg-overlay.hud-collapsed .mpg-hud .mpg-score,
.mpg-overlay.hud-collapsed .mpg-hud .mpg-meter { flex: 0 1 auto; width: auto; padding: 5px 9px; }
.mpg-overlay.hud-collapsed .mpg-hud .mpg-score { flex-direction: row; align-items: center; gap: 6px; }
.mpg-overlay.hud-collapsed .mpg-meter-head { flex-wrap: nowrap; }
@media (max-width: 680px) {
    .mpg-overlay .mpg-hud .mpg-top { grid-template-columns: minmax(0, 1fr) auto; }
    .mpg-overlay .mpg-hud .mpg-timer { grid-column: 1; grid-row: 2; justify-self: start; min-height: 32px; font-size: .8rem; }
    .mpg-overlay .mpg-hud .mpg-actions { grid-column: 2; grid-row: 1 / 3; align-self: start; max-width: 180px; }
    .mpg-overlay .mpg-hud .mpg-actions > button { padding: 6px 8px; font-size: .72rem; }
    .mpg-overlay .mpg-hud .mpg-status { flex-wrap: wrap; }
    .mpg-overlay .mpg-hud .mpg-score, .mpg-overlay .mpg-hud .mpg-meter { flex: 1 1 90px; }
    .mpg-overlay.hud-collapsed .mpg-hud .mpg-status { gap: 4px; }
    .mpg-overlay.hud-collapsed .mpg-hud .mpg-score, .mpg-overlay.hud-collapsed .mpg-hud .mpg-meter { flex: 1 1 65px; }
    .mpg-overlay .mpg-status .mpg-qbtn { flex: 1 1 110px; max-width: none; }
}
@media (max-height: 520px) and (orientation: landscape) {
    .mpg-overlay.hud-collapsed .mpg-hud .mpg-top { grid-template-columns: minmax(0, 1fr) auto auto; }
    .mpg-overlay.hud-collapsed .mpg-hud .mpg-actions { grid-column: auto; grid-row: auto; max-width: none; }
    .mpg-overlay.hud-collapsed .mpg-hud .mpg-timer { grid-column: auto; grid-row: auto; min-height: 44px; }
    .mpg-overlay.hud-collapsed .mpg-hud .mpg-status { justify-content: flex-end; }
    .mpg-overlay.hud-collapsed .mpg-hud .mpg-toasts { grid-column: 1 / -1; }
}
.mpg-overlay.has-touch .mpg-hint {
    white-space: normal;
    width: max-content;
    max-width: min(84vw, 560px);
    padding: 6px 10px;
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 12px;
    background: rgba(8,12,24,.9);
    line-height: 1.35;
}
.mpg-overlay.has-touch .mpg-status { flex-wrap: wrap; align-items: center; }
.mpg-overlay.has-touch .mpg-status .mpg-qbtn { max-width: 42vw; min-height: 38px; white-space: normal; line-height: 1.15; }
.mpg-overlay .mpg-touch { padding-left: max(12px, env(safe-area-inset-left)); padding-right: max(12px, env(safe-area-inset-right)); padding-bottom: max(12px, env(safe-area-inset-bottom)); }
.mpg-overlay.has-touch .mpg-stick { width: clamp(88px, 17vw, 132px); height: clamp(88px, 17vw, 132px); }
.mpg-overlay.has-touch .mpg-knob { width: clamp(40px, 8vw, 60px); height: clamp(40px, 8vw, 60px); margin: calc(clamp(40px, 8vw, 60px) / -2) 0 0 calc(clamp(40px, 8vw, 60px) / -2); }
.mpg-overlay.has-touch .mpg-btns { grid-template-columns: repeat(var(--cols, 2), minmax(44px, clamp(44px, 10vw, 66px))); }
.mpg-overlay.has-touch .mpg-btns button { width: clamp(44px, 10vw, 66px); height: clamp(44px, 10vw, 66px); min-width: 44px; min-height: 44px; }
.mpg-overlay.has-touch .mpg-btns .b-main { width: clamp(54px, 12vw, 76px); height: clamp(54px, 12vw, 76px); }
@media (max-width: 700px) {
    .multiplayer-mode-picker { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .multiplayer-mode { padding: 9px; }
    .multiplayer-mode .mode-preview-canvas { height: clamp(54px, 16vw, 82px); }
    .hosted-game-form, .solo-game-settings { min-width: 0; }
    .mpg-hud { gap: 4px; }
    .mpg-hud .mpg-top { grid-template-columns: minmax(0, 1fr) auto auto; align-items: start; }
    .mpg-hud .mpg-status { gap: 4px; }
    .mpg-overlay .mpg-hud .mpg-board { display: none; }
}
@media (max-height: 520px) and (orientation: landscape) {
    .mpg-overlay.has-touch .mpg-hint { display: block; font-size: .62rem; padding: 4px 8px; }
    .mpg-overlay.has-touch .mpg-touch { align-items: flex-end; padding-bottom: max(8px, env(safe-area-inset-bottom)); }
    .mpg-overlay.has-touch .mpg-stick { width: clamp(72px, 17vh, 96px); height: clamp(72px, 17vh, 96px); }
    .mpg-overlay.has-touch .mpg-knob { width: 40px; height: 40px; margin: -20px 0 0 -20px; }
    .mpg-overlay.has-touch .mpg-btns { grid-template-columns: repeat(var(--cols, 2), clamp(44px, 10vh, 56px)); gap: 5px; }
    .mpg-overlay.has-touch .mpg-btns button { width: clamp(44px, 10vh, 56px); height: clamp(44px, 10vh, 56px); font-size: .68rem; }
    .mpg-overlay.has-touch .mpg-btns .b-main { width: clamp(50px, 12vh, 64px); height: clamp(50px, 12vh, 64px); }
    .mpg-overlay .mpg-hud .mpg-toasts { height: 22px; }
}
@media (min-width: 1100px) {
    #multiplayer-host-flow { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: var(--spacing-md); align-items: start; }
    #multiplayer-host-flow > .community-heading, #multiplayer-host-flow > .multiplayer-mode-picker { grid-column: 1 / -1; }
    #multiplayer-host-flow > .multiplayer-mode-picker { margin-bottom: 0; }
    #multiplayer-host-flow > .hosted-game-setup { grid-column: 1; margin-top: 0; }
    #multiplayer-host-flow > #multiplayer-preview { grid-column: 2; margin-top: 0; }
    #multiplayer-game-canvas { aspect-ratio: 1.8 / 1; }
}
@media (max-width: 1099px) {
    #multiplayer-host-flow { display: grid; grid-template-columns: minmax(0, 1fr); }
    #multiplayer-host-flow > * { grid-column: 1; }
}

.mpg-player-avatar { width: 28px; height: 28px; object-fit: contain; flex: none; pointer-events: none; }
.profile-close { align-self: flex-start; margin-left: auto; }
.modal-header h2, .modal-header h3 { min-width: 0; overflow-wrap: anywhere; }
.daily-period-class { min-width: 0; flex: 1; text-align: right; overflow-wrap: anywhere; }
.schedule-due-work, .schedule-next-day ul { list-style: none; margin: 6px 0 0; padding: 0; }
.schedule-due-work li { display: flex; align-items: baseline; gap: 6px; justify-content: flex-end; }
.schedule-work-kind { color: var(--accent-primary); font-size: .72rem; text-transform: capitalize; flex: none; }
.schedule-work-link { padding: 3px 0; border: 0; background: transparent; color: var(--text-primary); font: inherit; font-size: .8rem; text-align: inherit; cursor: pointer; overflow-wrap: anywhere; }
.schedule-work-link:hover { text-decoration: underline; }
.schedule-extra-work { padding-top: 10px; }
.schedule-extra-work .schedule-due-work li { justify-content: flex-start; }
.schedule-next-day { margin-top: 10px; }
.schedule-next-day summary { color: var(--text-secondary); cursor: pointer; padding: 6px 0; }
.site-notice { display: flex; align-items: flex-start; gap: 12px; margin: 0 var(--spacing-lg) var(--spacing-md); padding: 12px 16px; border: 1px solid var(--accent-primary); border-radius: 12px; background: color-mix(in srgb, var(--accent-primary) 12%, var(--bg-primary)); color: var(--text-primary); }
.site-notice > div { flex: 1; min-width: 0; }
.site-notice p { margin: 4px 0 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.admin-tools { min-width: 0; }
.admin-tools summary, .admin-deck-details summary { cursor: pointer; color: var(--text-secondary); padding: 6px 0; }
.admin-tools .admin-actions { margin-top: 8px; }
.admin-deck-details { flex-basis: 100%; min-width: 0; }
.admin-deck-cards { max-height: 340px; overflow: auto; padding-left: 24px; overflow-wrap: anywhere; }
.admin-deck-cards li { margin-bottom: 10px; }
.admin-test-settings, .admin-notice-form { display: grid; gap: 12px; width: 100%; min-width: 0; }
.admin-test-settings { grid-template-columns: repeat(auto-fit, minmax(min(180px, 100%), 1fr)); }
.admin-test-settings label, .admin-notice-form label { display: grid; gap: 6px; min-width: 0; color: var(--text-secondary); }
.admin-test-settings select, .admin-notice-form textarea { width: 100%; min-width: 0; box-sizing: border-box; color: var(--text-primary); background: var(--bg-primary); border: 1px solid var(--border-glass); border-radius: 8px; padding: 10px; font: inherit; }
.mpg-hud .mpg-actions { position: relative; }
.mpg-test-tools { color: #f8fafc; }
.mpg-test-tools:not([open]) .mpg-test-panel { display: none; }
.mpg-test-tools summary { padding: 6px 8px; cursor: pointer; border: 1px solid rgba(255,255,255,.25); border-radius: 8px; background: rgba(15,23,42,.85); font-size: .75rem; }
.mpg-test-panel { position: absolute; top: calc(100% + 8px); right: 0; width: min(260px, 80vw); max-height: 50dvh; overflow: auto; padding: 12px; border-radius: 12px; background: #0f172a; border: 1px solid #475569; z-index: 10; box-sizing: border-box; }
.mpg-test-panel > div { display: flex; gap: 8px; }
.mpg-test-panel > label { display: flex; align-items: center; gap: 8px; margin-top: 10px; font-size: .78rem; }
.mpg-test-panel > .mpg-test-range { flex-wrap: wrap; justify-content: space-between; }
.mpg-test-range input { width: 100%; }
.mpg-test-range output { color: #7dd3fc; }
.mpg-test-panel select { min-width: 0; flex: 1; }
.mpg-test-panel > .mpg-test-teleport { margin-top: 10px; flex-wrap: wrap; }
.mpg-test-stats { white-space: pre-wrap; font-size: .75rem; line-height: 1.6; color: #e2e8f0; }
.mpg-overlay .mpg-hud .mpg-board { display: grid; position: static; grid-column: 2; grid-row: 2; width: 100%; max-height: min(150px, 24dvh); margin: 0; padding: 8px; background: rgba(15, 23, 42, .9); }
.mpg-overlay .mpg-hud .mpg-board li { grid-template-columns: 28px minmax(0, 1fr) auto; }
.mpg-overlay .mpg-hud .mpg-board li > span { min-width: 0; }
.mpg-overlay .mpg-hud .mpg-meter-value { color: #f8fafc; font-size: 1rem; font-variant-numeric: tabular-nums; }
.mpg-overlay .mpg-hud .mpg-meter-label { min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.mpg-overlay .mpg-hud .mpg-meter-value { flex: none; }
.mpg-overlay .mpg-hud .mpg-score, .mpg-overlay .mpg-hud .mpg-meter { align-self: start; border-radius: 10px; }
.mpg-overlay .mpg-hud .mpg-chip { padding: 5px 8px; background: rgba(8,12,24,.78); border: 0; backdrop-filter: none; }
.mpg-overlay .mpg-hud .mpg-status { padding: 0; gap: 4px; }
.mpg-overlay .mpg-hud .mpg-score, .mpg-overlay .mpg-hud .mpg-meter { flex: 0 1 140px; min-height: 44px; align-items: center; padding: 6px 8px; background: rgba(8,12,24,.78); border: 0; }
.mpg-overlay .mpg-hud .mpg-hint { position: static; transform: none; width: auto; max-width: 100%; padding: 0; margin: 0; border: 0; border-radius: 0; background: transparent; font-size: .75rem; line-height: 1.5; white-space: normal; text-align: left; overflow-wrap: anywhere; }
.mpg-hud .mpg-panels { grid-column: 1 / -1; justify-self: end; min-width: 0; max-width: 100%; pointer-events: auto; }
.mpg-hud .mpg-panels:has(> :not([hidden])) { width: min(480px, 100%); }
.mpg-hud .mpg-panels > div { position: static; width: 100%; max-width: 100%; max-height: min(240px, 30dvh); overflow: auto; padding: 12px; border: 1px solid #475569; border-radius: 10px; background: #0f172a; color: #f8fafc; box-sizing: border-box; }
.mpg-hud .mpg-panels > [hidden] { display: none; }
.mpg-controls-help summary { padding: 7px 9px; cursor: pointer; border: 1px solid rgba(255,255,255,.25); border-radius: 8px; background: rgba(15,23,42,.85); font-size: .78rem; white-space: nowrap; }
.mpg-overlay .mpg-hud .mpg-actions { flex-wrap: wrap; justify-content: flex-end; min-width: 0; max-width: 100%; }
@media (max-width: 760px) {
    .mpg-overlay .mpg-hud .mpg-top { grid-template-columns: minmax(0, 1fr) auto; }
    .mpg-overlay .mpg-hud .mpg-actions { grid-column: 1 / -1; grid-row: 2; }
    .mpg-overlay .mpg-hud .mpg-timer { grid-column: 2; grid-row: 1; }
}
@media (max-height: 480px) {
    .mpg-overlay .mpg-hud .mpg-board { max-height: 64px; }
    .mpg-overlay .mpg-hud .mpg-panels > div { max-height: 25dvh; padding: 8px; }
}
@media (max-width: 680px) {
    .mpg-overlay .mpg-hud { grid-template-columns: minmax(0, 1fr); }
    .mpg-overlay .mpg-hud .mpg-board { grid-column: 1; grid-row: auto; max-height: min(110px, 20dvh); }
    .mpg-overlay .mpg-hud .mpg-top { grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
    .mpg-overlay .mpg-hud .mpg-actions { grid-column: 1 / -1; grid-row: 2; align-self: center; }
    .mpg-overlay .mpg-hud .mpg-timer { grid-column: 2; grid-row: 1; align-self: center; }
    .mpg-overlay .mpg-hud .mpg-timer { padding: 4px 6px; min-height: 44px; }
    .mpg-overlay .mpg-hud .mpg-score, .mpg-overlay .mpg-hud .mpg-meter { flex: 1 1 65px; }
    .mpg-overlay .mpg-hud .mpg-status .mpg-qbtn { flex: 1 1 100px; max-width: none; font-size: .68rem; }
    .mpg-overlay .mpg-hud .mpg-meter-head { font-size: .6rem; }
    .mpg-overlay .mpg-hud .mpg-score strong, .mpg-overlay .mpg-hud .mpg-meter-value { font-size: .9rem; }
}
.mpg-overlay .mpg-results-card ol > li { grid-template-columns: 20px 28px minmax(0, 1fr) auto; }
.mpg-overlay .mpg-status .mpg-qbtn { display: inline-flex; align-items: center; justify-content: center; gap: 4px; align-self: start; min-height: 44px; padding: 6px 10px; border-radius: 10px; border: 1px solid rgba(250,204,21,.65); background: rgba(113,83,8,.85); color: #fff; font-size: .75rem; font-weight: 700; pointer-events: auto; touch-action: manipulation; }
.mpg-hud .mpg-toasts:empty { height: 0; }
.mpg-overlay .mpg-q-card { width: min(560px, 100%); }
.mpg-overlay .mpg-q-options button { min-height: 44px; text-align: left; }
.mpg-overlay .mpg-q-options button kbd { flex: none; }
.mpg-overlay .mpg-q-skip { min-height: 44px; }
.mpg-overlay .mpg-question, .mpg-overlay .mpg-results { padding: max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left)); }
@media (pointer: coarse) {
    .mpg-hud .mpg-actions button { min-height: 44px; }
}
@media (max-width: 380px) {
    .mpg-hud .mpg-top { grid-template-columns: minmax(0, 1fr) auto; }
    .mpg-hud .mpg-timer { grid-column: 1; grid-row: 2; justify-self: start; padding: 3px 8px; }
    .mpg-hud .mpg-actions { grid-column: 2; grid-row: 1 / 3; align-self: center; }
    .mpg-hud .mpg-status { gap: 4px; }
    .mpg-overlay .mpg-status .mpg-qbtn { padding: 4px 6px; font-size: .65rem; }
}
.grade-scale-editor { display: grid; gap: 6px; overflow-x: auto; }
.grade-scale-row { display: grid; grid-template-columns: 40px repeat(3, minmax(0, 1fr)); align-items: center; gap: 8px; }
.grade-scale-row > strong, .grade-scale-heading { font-size: .76rem; }
.grade-scale-row input { width: 100%; min-width: 0; padding: 7px 5px; }
.grade-scale-heading { color: var(--text-secondary, #aeb7c8); font-weight: 700; }
.admin-tag-options { align-items: center; }
.admin-tag-options label { display: inline-flex; align-items: center; gap: 5px; }
.admin-tag-options input { width: auto; }

/* Infinite Campus import */
#ic-import-modal { max-width: 860px; }
.ic-steps { display: grid; gap: 14px; margin: 12px 0; padding-left: 0; list-style: none; counter-reset: ic-step; }
.ic-steps > li { position: relative; padding-left: 2.2rem; counter-increment: ic-step; }
.ic-steps > li::before { content: counter(ic-step); position: absolute; left: 0; top: 0; width: 1.6rem; height: 1.6rem; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: .85rem; color: var(--accent-on-primary, #fff); background: var(--accent-primary); }
.ic-steps li { display: grid; gap: 6px; }
.ic-steps small, .ic-class-info small { color: var(--text-muted); }
.ic-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.ic-row input[type="url"] { flex: 1 1 260px; min-width: 0; }
.ic-bookmarklet { cursor: grab; text-decoration: none; }
.ic-drag-hint { display: inline-flex; align-items: center; gap: 6px; color: var(--text-muted); font-size: .9rem; }
.ic-drag-hint i { animation: ic-nudge 1.4s ease-in-out infinite; }
@keyframes ic-nudge { 50% { transform: translateY(-4px); } }
@media (prefers-reduced-motion: reduce) { .ic-drag-hint i { animation: none; } }
.ic-more { display: grid; gap: 6px; }
.ic-more summary { cursor: pointer; color: var(--text-muted); font-size: .9rem; width: fit-content; }
.ic-more[open] summary { margin-bottom: 6px; }
.ic-more input[type="url"], .ic-more textarea { width: 100%; }
.ic-steps kbd { padding: 0 5px; border: 1px solid var(--border-glass); border-radius: 4px; font: inherit; font-size: .85em; }
#ic-import-modal.ic-has-preview .ic-steps, #ic-import-modal.ic-has-preview > .modal-body > .settings-hint { display: none; }
#ic-import-preview .modal-footer { display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.ic-file-label { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
.ic-import-status:empty { display: none; }
.ic-import-status { padding: 10px 12px; border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass); }
.ic-import-status[data-tone="ok"] { border-color: color-mix(in srgb, #2ecc71 55%, var(--border-glass)); }
.ic-import-status[data-tone="warn"] { border-color: color-mix(in srgb, #f1c40f 60%, var(--border-glass)); }
.ic-import-status[data-tone="error"] { border-color: color-mix(in srgb, #e74c3c 60%, var(--border-glass)); }
.ic-import-preview { display: grid; gap: 12px; margin-top: 8px; }
.ic-class-list { display: grid; gap: 8px; max-height: 46vh; overflow-y: auto; padding-right: 4px; }
.ic-class-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(200px, 300px); align-items: center; gap: 12px; padding: 10px 12px; border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); background: var(--bg-glass); }
.ic-class-row.ic-skipped { opacity: .55; }
.ic-class-info { display: grid; gap: 3px; min-width: 0; }
.ic-class-row select { width: 100%; min-width: 0; }
.ic-badge { display: inline-block; margin-left: 6px; padding: 1px 8px; border-radius: 999px; font-size: .7rem; font-weight: 700; vertical-align: middle; }
.ic-badge.ok { color: #1e8449; background: color-mix(in srgb, #2ecc71 22%, transparent); }
.ic-badge.check { color: #9a7d0a; background: color-mix(in srgb, #f1c40f 24%, transparent); }
.ic-options { display: flex; flex-wrap: wrap; gap: 8px 18px; padding: 10px 12px; border: 1px solid var(--border-glass); border-radius: var(--border-radius-sm); }
.ic-options label { display: inline-flex; align-items: center; gap: 6px; }
.ic-schedule-status { margin-top: 12px; }
.calendar-day small.calendar-day-note { overflow: hidden; color: var(--accent-primary); text-overflow: ellipsis; white-space: nowrap; }
.calendar-day.calendar-day-off { opacity: .7; }
.calendar-day-note-text { color: var(--accent-primary); font-weight: 600; }
@media (max-width: 640px) {
    .ic-class-row { grid-template-columns: 1fr; }
    #ic-import-modal .ic-row > button, #ic-import-modal .ic-file-label { min-height: 44px; }
    #ic-import-modal input, #ic-import-modal textarea, #ic-import-modal select { font-size: 16px; }
    #ic-import-modal .ic-more { min-width: 0; }
    #ic-import-modal .ic-more small { overflow-wrap: anywhere; }
}

.guest-colors h4 { margin: 0 0 10px; }
.guest-color-row { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 8px; }
.guest-color { width: 42px; height: 42px; border-radius: 50%; border: 3px solid transparent; background: var(--swatch); cursor: pointer; box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25); }
.guest-color.active, .guest-color:focus-visible { border-color: var(--text-primary, #fff); outline: none; transform: scale(1.08); }
body.guest-mode #multiplayer-shop .view-header p { display: none; }
body.guest-mode .nav-item[data-target="friends-view"],
body.guest-mode .workspace-tab[data-target="friends-view"],
body.guest-mode #username-card,
body.guest-mode #public-profile-card,
body.guest-mode [data-study-leaderboard-scope="friends"] { display: none !important; }

/* Profile hub */
.profile-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); gap: 18px; margin-top: 18px; align-items: start; }
.card-title-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.card-title-row h2 { margin: 0; }

/* Seasonal boxes and sets */
.shop-set-tag { color: var(--box-accent, var(--accent-primary)); font-weight: 700; }
.multiplayer-shop .shop-grid > .box-featured { grid-column: 1 / -1; display: grid; grid-template-columns: 160px minmax(0, 1fr) auto; grid-template-rows: auto auto auto; gap: 10px 18px; align-items: center; text-align: left; padding: 18px;
    border: 2px solid color-mix(in srgb, var(--box-accent) 55%, transparent);
    background: linear-gradient(120deg, color-mix(in srgb, var(--box-accent) 16%, var(--bg-glass)), color-mix(in srgb, var(--box-accent-2, var(--box-accent)) 14%, var(--bg-glass))); }
.multiplayer-shop .box-featured .mystery-capsule { grid-row: 1 / 4; height: 150px; color: var(--box-accent); animation: seasonFloat 3.2s ease-in-out infinite; }
.multiplayer-shop .box-featured > .box-details { justify-items: start; }
.multiplayer-shop .box-featured > button { grid-column: 3; grid-row: 1; justify-self: end; min-width: 150px; }
.multiplayer-shop .box-featured > .season-set-preview { grid-column: 2 / 4; }
.multiplayer-shop .box-featured > .box-odds { grid-column: 2 / 4; }
.multiplayer-shop .box-featured > .season-set-preview, .multiplayer-shop .box-featured > .box-odds, .multiplayer-shop .box-featured > .box-details { justify-self: stretch; width: 100%; }
.multiplayer-shop .shop-grid > .shop-category-title { justify-content: flex-start; }
.multiplayer-shop .season-set-item .player-avatar, .multiplayer-shop .season-set-item .shop-palette, .multiplayer-shop .season-set-item .shop-preview { width: 64px; height: 64px; min-height: 0; margin: 0; }
.multiplayer-shop .box-featured > .box-odds { text-align: left; }
.multiplayer-shop .box-featured > .box-odds > summary { justify-content: flex-start; }
.season-badge { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px; background: color-mix(in srgb, var(--box-accent) 22%, transparent); color: var(--text-primary); font-size: .72rem; font-weight: 800; letter-spacing: .02em; }
.season-set-preview { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(92px, 100%), 1fr)); gap: 8px; }
.season-set-item { position: relative; display: grid; justify-items: center; gap: 4px; padding: 8px 6px; border-radius: 12px; border: 1px solid color-mix(in srgb, var(--rarity) 45%, transparent); background: color-mix(in srgb, var(--rarity) 8%, transparent); text-align: center; }
.season-set-item .player-avatar, .season-set-item .shop-palette { width: 56px; height: 56px; }
.season-set-item small { font-size: .68rem; line-height: 1.2; color: var(--text-secondary); }
.season-set-item:not(.owned) .player-avatar, .season-set-item:not(.owned) .shop-palette { filter: saturate(.25) brightness(.8); opacity: .7; }
.season-set-item.owned::after { content: '\f00c'; font-family: 'Font Awesome 6 Free'; font-weight: 900; position: absolute; top: 4px; right: 6px; font-size: .7rem; color: var(--rarity); }
.box-contents { list-style: none; margin: 8px 0 0; padding: 0; display: grid; gap: 6px; text-align: left; }
.box-contents li { display: flex; flex-wrap: wrap; gap: 4px 8px; font-size: .74rem; color: var(--text-secondary); }
.box-contents li b { color: var(--rarity); text-transform: capitalize; min-width: 76px; }
.box-contents li span.owned { color: var(--text-primary); }
.box-contents li span:not(:last-child)::after { content: ','; }
.shop-grid-sets { grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr)) !important; }
.season-set-card { display: grid; gap: 12px; padding: 14px; border-radius: 16px; border: 1px solid var(--border-glass); background: linear-gradient(135deg, color-mix(in srgb, var(--box-accent) 10%, var(--bg-glass)), var(--bg-glass)); }
.season-set-card.live { border: 2px solid var(--box-accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--box-accent) 14%, transparent); }
.season-set-card.complete header strong::after { content: ' \2713'; color: var(--accent-primary); }
.season-set-card header { display: flex; align-items: center; gap: 12px; }
.season-set-card header > i { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: color-mix(in srgb, var(--box-accent) 22%, transparent); color: var(--box-accent); font-size: 1.1rem; }
.season-set-card header > div { display: grid; flex: 1; min-width: 0; }
.season-set-card header small { color: var(--text-secondary); }
@keyframes seasonFloat { 50% { transform: translateY(-6px) rotate(-2deg); } }
@media (max-width: 760px) {
    .multiplayer-shop .shop-grid > .box-featured { grid-template-columns: 96px minmax(0, 1fr); }
    .multiplayer-shop .box-featured .mystery-capsule { grid-row: 1 / 2; height: 96px; }
    .multiplayer-shop .box-featured > button, .multiplayer-shop .box-featured > .season-set-preview, .multiplayer-shop .box-featured > .box-odds { grid-column: 1 / -1; grid-row: auto; justify-self: stretch; }
}

/* Unboxing */
.unbox-overlay { position: fixed; inset: 0; z-index: 4000; display: grid; place-items: center; --box-accent: var(--accent-primary); --box-accent-2: var(--accent-secondary); --rarity: var(--box-accent); color: #f8fafc; }
.unbox-backdrop { position: absolute; inset: 0; background: radial-gradient(circle at 50% 45%, color-mix(in srgb, var(--box-accent) 30%, #0b1020) 0%, #05070d 70%); animation: unboxFade .35s ease-out; }
.unbox-stage { position: relative; display: grid; justify-items: center; gap: 18px; width: min(920px, 96vw); padding: 24px; }
.unbox-title { margin: 0; font-size: 1.1rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; opacity: .85; }
.unbox-rays { position: absolute; top: 50%; left: 50%; width: 900px; height: 900px; margin: -450px 0 0 -450px; border-radius: 50%; opacity: 0; pointer-events: none;
    background: repeating-conic-gradient(from 0deg, color-mix(in srgb, var(--rarity) 55%, transparent) 0deg 8deg, transparent 8deg 22deg);
    -webkit-mask: radial-gradient(circle, #000 0 20%, transparent 62%); mask: radial-gradient(circle, #000 0 20%, transparent 62%); }
.unbox-box { position: relative; width: 150px; height: 150px; display: grid; place-items: center; }
.unbox-box .unbox-body { display: grid; place-items: center; width: 130px; height: 100px; margin-top: 40px; border-radius: 14px; background: linear-gradient(160deg, var(--box-accent), var(--box-accent-2)); box-shadow: 0 18px 50px color-mix(in srgb, var(--box-accent) 50%, transparent), inset 0 -10px 0 rgba(0,0,0,.18); font-size: 2.4rem; color: rgba(255,255,255,.9); }
.unbox-box .unbox-lid { position: absolute; top: 18px; left: 2px; width: 146px; height: 34px; border-radius: 10px; background: linear-gradient(160deg, var(--box-accent-2), var(--box-accent)); box-shadow: inset 0 -6px 0 rgba(0,0,0,.15); z-index: 1; }
.unbox-box .unbox-lid::after { content: ''; position: absolute; left: 50%; top: -2px; width: 22px; height: 138px; margin-left: -11px; background: rgba(255,255,255,.55); border-radius: 4px; }
.phase-shake .unbox-box { animation: unboxShake .5s ease-in-out infinite; }
.phase-shake .unbox-box .unbox-lid { animation: unboxLidRattle .25s ease-in-out infinite alternate; }
.phase-spin .unbox-box, .phase-reveal .unbox-box { display: none; }
.unbox-reel { position: relative; display: none; width: 100%; height: 170px; overflow: hidden; border-radius: 18px; background: rgba(15, 23, 42, .65); border: 1px solid rgba(255,255,255,.12);
    -webkit-mask: linear-gradient(90deg, transparent, #000 14%, #000 86%, transparent); mask: linear-gradient(90deg, transparent, #000 14%, #000 86%, transparent); }
.phase-spin .unbox-reel { display: block; animation: unboxPop .35s cubic-bezier(.2, 1.3, .4, 1); }
.phase-reveal .unbox-reel { display: block; opacity: .35; transform: scale(.94); transition: opacity .4s, transform .4s; }
.unbox-strip { display: flex; gap: 10px; padding: 15px 0; will-change: transform; }
.unbox-tile { flex: 0 0 120px; height: 140px; display: grid; justify-items: center; align-content: center; gap: 6px; padding: 6px; border-radius: 14px; background: linear-gradient(180deg, color-mix(in srgb, var(--rarity) 28%, #111827), #0f172a); border-bottom: 4px solid var(--rarity); text-align: center; }
.unbox-tile .player-avatar, .unbox-tile .shop-palette { width: 74px; height: 74px; }
.unbox-tile small { font-size: .7rem; line-height: 1.2; color: #e2e8f0; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.unbox-marker { position: absolute; top: 0; bottom: 0; left: 50%; width: 4px; margin-left: -2px; background: #fde047; box-shadow: 0 0 14px #fde047; }
.unbox-marker::before, .unbox-marker::after { content: ''; position: absolute; left: 50%; margin-left: -9px; border: 9px solid transparent; }
.unbox-marker::before { top: 0; border-top-color: #fde047; }
.unbox-marker::after { bottom: 0; border-bottom-color: #fde047; }
.unbox-result { display: none; }
.phase-reveal .unbox-result { display: grid; place-items: center; position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.phase-reveal .unbox-result > * { pointer-events: auto; }
.phase-reveal .unbox-rays { opacity: .9; animation: unboxRays 14s linear infinite, unboxFade .5s ease-out; }
.unbox-card { display: grid; justify-items: center; gap: 6px; width: min(360px, 88vw); padding: 22px 22px 18px; border-radius: 22px; text-align: center; background: linear-gradient(180deg, color-mix(in srgb, var(--rarity) 30%, #111827), #0b1120); border: 2px solid var(--rarity); box-shadow: 0 0 60px color-mix(in srgb, var(--rarity) 55%, transparent), 0 30px 60px rgba(0,0,0,.5); animation: unboxCard .6s cubic-bezier(.2, 1.5, .4, 1); }
.unbox-card-preview .player-avatar, .unbox-card-preview .shop-palette { width: 150px; height: 150px; }
.unbox-card .rarity-label { color: var(--rarity); font-weight: 900; letter-spacing: .16em; text-transform: uppercase; font-size: .78rem; }
.unbox-card strong { font-size: 1.5rem; line-height: 1.15; }
.unbox-card > span:not(.unbox-card-preview) { color: #cbd5e1; font-size: .86rem; }
.unbox-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 10px; }
.unbox-overlay .ghost-btn { color: #e2e8f0; border-color: rgba(255,255,255,.25); }
.unbox-skip { position: absolute; right: 20px; bottom: 20px; }
.unbox-confetti { position: absolute; top: 50%; left: 50%; width: 0; height: 0; pointer-events: none; z-index: 3; }
.unbox-confetti i { position: absolute; width: 9px; height: 14px; border-radius: 2px; background: hsl(var(--h) 90% 62%); animation: unboxConfetti 1.6s cubic-bezier(.15, .7, .3, 1) var(--d) forwards; opacity: 0; }
.rarity-legendary .unbox-confetti i, .rarity-mythic .unbox-confetti i { animation-duration: 2.2s; }
.unbox-reel { box-shadow: inset 0 0 0 1px rgba(255,255,255,.04), inset 0 18px 30px -18px rgba(0,0,0,.7), inset 0 -18px 30px -18px rgba(0,0,0,.7), 0 0 40px color-mix(in srgb, var(--box-accent) 25%, transparent); background: linear-gradient(180deg, rgba(15,23,42,.85), rgba(30,27,75,.7) 50%, rgba(15,23,42,.85)); }
.unbox-tile { position: relative; box-shadow: inset 0 1px 0 rgba(255,255,255,.08); }
.unbox-tile::after { content: ''; position: absolute; inset: 0; border-radius: inherit; background: radial-gradient(circle at 50% 35%, color-mix(in srgb, var(--rarity) 30%, transparent), transparent 65%); pointer-events: none; }
.unbox-tile.is-winner { outline: 3px solid var(--rarity); outline-offset: -3px; box-shadow: 0 0 26px color-mix(in srgb, var(--rarity) 70%, transparent); }
.phase-spin .unbox-marker { animation: unboxMarker .6s ease-in-out infinite alternate; }
.unbox-card { position: relative; max-height: calc(100dvh - 32px); overflow-y: auto; overscroll-behavior: contain; }
.unbox-badge { position: absolute; top: 12px; right: 12px; padding: 3px 10px; border-radius: 999px; background: var(--rarity); color: #0b1120; font-size: .7rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; box-shadow: 0 4px 14px color-mix(in srgb, var(--rarity) 50%, transparent); }
.unbox-card.is-duplicate .unbox-badge { background: rgba(148, 163, 184, .9); box-shadow: none; }
.unbox-card-preview { display: grid; place-items: center; padding: 6px; border-radius: 20px; background: radial-gradient(circle, color-mix(in srgb, var(--rarity) 35%, transparent), transparent 70%); }
.unbox-actions > .btn, .unbox-actions > button { min-height: 40px; }
.unbox-skip { right: max(20px, env(safe-area-inset-right)); bottom: max(20px, env(safe-area-inset-bottom)); }
@media (max-width: 560px), (max-height: 560px) {
    .unbox-stage { gap: 12px; padding: 16px 8px; }
    .unbox-rays { width: 140vmin; height: 140vmin; margin: -70vmin 0 0 -70vmin; }
    .unbox-reel { height: 136px; border-radius: 14px; }
    .unbox-strip { gap: 8px; padding: 12px 0; }
    .unbox-tile { flex-basis: 92px; height: 112px; border-radius: 12px; }
    .unbox-tile .player-avatar, .unbox-tile .shop-palette { width: 56px; height: 56px; }
    .unbox-tile small { font-size: .64rem; }
    .open-box-lg { --ob-w: 150px; }
    .unbox-card { padding: 18px 14px 14px; }
    .unbox-card-preview .player-avatar, .unbox-card-preview .shop-palette { width: 108px; height: 108px; }
    .unbox-card strong { font-size: 1.25rem; }
    .unbox-actions { display: grid; grid-template-columns: 1fr; width: 100%; }
    .unbox-skip { right: 50%; transform: translateX(50%); }
}
@keyframes unboxMarker { to { box-shadow: 0 0 26px #fde047, 0 0 4px #fff; } }
@keyframes unboxFade { from { opacity: 0; } }
@keyframes unboxShake { 0%, 100% { transform: rotate(0) scale(1); } 25% { transform: rotate(-6deg) scale(1.03); } 75% { transform: rotate(6deg) scale(1.03); } }
@keyframes unboxLidRattle { to { transform: translateY(-6px) rotate(-3deg); } }
@keyframes unboxPop { from { transform: scale(.7); opacity: 0; } }
@keyframes unboxRays { to { transform: rotate(360deg); } }
@keyframes unboxCard { from { transform: scale(.4) rotate(-6deg); opacity: 0; } }
@keyframes unboxConfetti { 0% { opacity: 1; transform: translate(0, 0) rotate(0); } 100% { opacity: 0; transform: translate(calc(var(--x) * 46vw), calc(var(--y) * -10vh + 45vh)) rotate(var(--r)); } }
@media (prefers-reduced-motion: reduce) {
    .phase-shake .unbox-box, .phase-shake .unbox-box .unbox-lid, .phase-reveal .unbox-rays, .unbox-card, .multiplayer-shop .box-featured .mystery-capsule { animation: none; }
}

.mpg-answer-mixed { border-left: 3px solid #fbbf24; }
.answer-tally { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.answer-meter { flex: 0 0 80px; height: 6px; border-radius: 999px; background: linear-gradient(90deg, #4ade80 var(--acc), rgba(248, 113, 113, .55) var(--acc)); }
.offline-notice-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* Content reports */
.community-deck-actions { display: flex; flex-direction: column; align-items: flex-end; gap: .35rem; }
.report-btn { font-size: .8rem; opacity: .75; color: var(--text-secondary); }
.report-btn:hover, .report-btn:focus-visible { opacity: 1; color: var(--danger-color, #ef4444); }
.profile-report-row { display: flex; justify-content: flex-end; margin-top: .75rem; }
.report-modal { display: grid; gap: .75rem; max-width: 460px; }
.report-modal h3 { margin: 0; display: flex; gap: .5rem; align-items: center; }
.report-reasons { border: 0; padding: 0; margin: 0; display: grid; gap: .35rem; }
.report-reasons legend { font-weight: 700; margin-bottom: .35rem; }
.report-reasons label { display: flex; gap: .5rem; align-items: center; padding: .45rem .6rem; border-radius: 10px; border: 1px solid var(--border-glass); cursor: pointer; }
.report-reasons label:has(input:checked) { border-color: var(--danger-color, #ef4444); background: color-mix(in srgb, var(--danger-color, #ef4444) 10%, transparent); }
.report-modal textarea { width: 100%; }
.report-status:empty { display: none; }
.report-details { list-style: none; padding: 0; margin: .4rem 0 0; display: grid; gap: .3rem; }
.report-details p { margin: .1rem 0 0; }

/* Assignment status tracking */
.assignment-status-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(130px, 100%), 1fr)); gap: .5rem; margin: .25rem 0 .9rem; }
.status-summary-chip { display: flex; align-items: center; gap: .5rem; padding: .6rem .8rem; border-radius: 12px; border: 1px solid var(--border-glass); background: var(--bg-glass-hover); color: inherit; cursor: pointer; text-align: left; font: inherit; }
.status-summary-chip strong { font-size: 1.25rem; }
.status-summary-chip span { font-size: .82rem; opacity: .8; }
.status-summary-chip.selected { outline: 2px solid var(--accent-primary); outline-offset: 1px; }
.status-summary-chip.is-overdue i, .status-pill.is-overdue { color: #ef4444; }
.status-summary-chip.is-awaiting i, .status-pill.is-awaiting { color: #f59e0b; }
.status-summary-chip.is-graded i, .status-pill.is-graded { color: #22c55e; }
.status-summary-chip.is-todo i, .status-pill.is-todo { color: var(--accent-primary); }
.assignment-status-cell { display: flex; flex-wrap: wrap; align-items: center; gap: .35rem .5rem; }
.status-pill { display: inline-flex; align-items: center; gap: .3rem; padding: .18rem .55rem; border-radius: 999px; font-size: .78rem; font-weight: 700; white-space: nowrap; background: color-mix(in srgb, currentColor 12%, transparent); }
.compact-btn { padding: .3rem .65rem; font-size: .8rem; }
.assignment-row.is-graded td, .transcript-assignment.is-graded { opacity: .92; }
.assignment-state-toggle { grid-template-columns: repeat(3, 1fr); }
.assignment-state-toggle span { font-size: .86rem; padding: 8px 6px; }

/* =====================================================================
   STUDBUD DESIGN LAYER — "Chunky & friendly"
   Rounded type, solid cards with a pressable bottom edge, colourful nav.
   Everything here is solid colour (no backdrop blur) so cheap Chromebooks
   repaint quickly.
   ===================================================================== */
@font-face {
    font-family: 'Nunito';
    font-style: normal;
    font-weight: 400 900;
    font-display: swap;
    src: url('./assets/fonts/nunito-latin.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
    --font-main: 'Nunito', 'Segoe UI Rounded', ui-rounded, 'Segoe UI', Roboto, system-ui, sans-serif;
    --border-radius-sm: 12px;
    --border-radius-md: 18px;
    --border-radius-lg: 24px;
    --edge: 4px;
    --ease-bounce: cubic-bezier(.34, 1.56, .64, 1);
    --c-home: #ff9f1c;
    --c-school: #4cc9f0;
    --c-plan: #ff6b9a;
    --c-study: #7c6cff;
    --c-play: #2fd18b;
    --c-teach: #ffbf3c;
    --c-profile: #b388ff;
    --c-settings: #8d99ae;
}

/* Default palette: a violet primary with a mint secondary. */
body[data-color-scheme="studbud"].dark-theme {
    --bg-base: #12142a;
    --bg-surface: #1a1d38;
    --bg-glass: #1b1e3a;
    --bg-glass-hover: #252a4d;
    --border-glass: #2d3260;
    --text-primary: #f5f6ff;
    --text-secondary: #b8bce0;
    --text-muted: #8e93bf;
    --accent-primary: #8b7bff;
    --accent-primary-hover: #7a68ff;
    --accent-secondary: #2fd6a3;
    --accent-on-primary: #ffffff;
    --status-success: #2fd18b;
    --status-warning: #ffb020;
    --status-danger: #ff5a6e;
    --status-info: #4cc9f0;
    --bg-glow-one: rgba(139, 123, 255, 0.12);
    --bg-glow-two: rgba(47, 214, 163, 0.07);
}
body[data-color-scheme="studbud"].light-theme {
    --bg-base: #f4f3ff;
    --bg-surface: #ffffff;
    --bg-glass: #ffffff;
    --bg-glass-hover: #efedff;
    --border-glass: #dcd9f5;
    --text-primary: #1f1c45;
    --text-secondary: #4d4a78;
    --text-muted: #67648f;
    --accent-primary: #5b47f0;
    --accent-primary-hover: #4a36de;
    --accent-secondary: #0b9a70;
    --accent-on-primary: #ffffff;
    --status-success: #0e9f63;
    --status-warning: #c27400;
    --status-danger: #dc2f45;
    --status-info: #0b84c6;
    --bg-glow-one: rgba(91, 71, 240, 0.07);
    --bg-glow-two: rgba(11, 154, 112, 0.05);
}
.studbud-swatch { --swatch: linear-gradient(90deg, #8b7bff 0 60%, #2fd6a3 60% 100%); }

body {
    font-family: var(--font-main);
    font-weight: 600;
    letter-spacing: .005em;
    /* A static (non-fixed) background avoids a full repaint on every scroll frame. */
    background-attachment: scroll;
    background-image: radial-gradient(ellipse 900px 520px at 100% -10%, var(--bg-glow-one), transparent 70%);
    background-repeat: no-repeat;
}
h1, h2, h3, h4, h5, h6 { font-weight: 900; letter-spacing: -.01em; }
p, li, small, label, td { font-weight: 600; }
strong, b { font-weight: 800; }

/* Solid surfaces: no blur, a soft bottom edge like a physical card. */
.glass-panel, .glass-card, .mpg-hud {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}
.glass-card {
    background: var(--bg-glass);
    border: 2px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    box-shadow: 0 var(--edge) 0 var(--border-glass);
}
.glass-card:hover { box-shadow: 0 var(--edge) 0 var(--border-glass); }
.glass-panel { background: var(--bg-glass); }

/* Buttons: chunky, pressable, with a darker bottom lip. */
.btn-base, .primary-btn, .secondary-btn, .ghost-btn, .danger-btn {
    border-radius: 14px;
    font-weight: 800;
    letter-spacing: .01em;
    padding: 10px 18px;
    min-height: 42px;
    transition: transform .08s ease, box-shadow .08s ease, filter .15s ease, background-color .15s ease;
}
.primary-btn {
    background: var(--accent-primary);
    color: var(--accent-on-primary);
    box-shadow: 0 var(--edge) 0 color-mix(in srgb, var(--accent-primary) 62%, #000);
}
.primary-btn:hover { background: var(--accent-primary); filter: brightness(1.07); transform: none; box-shadow: 0 var(--edge) 0 color-mix(in srgb, var(--accent-primary) 62%, #000); }
.secondary-btn, .ghost-btn {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 2px solid var(--border-glass);
    box-shadow: 0 var(--edge) 0 var(--border-glass);
}
.secondary-btn:hover, .ghost-btn:hover { background: var(--bg-glass-hover); }
.ghost-btn { box-shadow: none; }
.danger-btn {
    background: var(--status-danger);
    color: #fff;
    border: 0;
    box-shadow: 0 var(--edge) 0 color-mix(in srgb, var(--status-danger) 60%, #000);
}
.compact-btn { min-height: 34px; padding: 6px 12px; font-size: .8rem; border-radius: 11px; --edge: 3px; }
:is(.primary-btn, .secondary-btn, .danger-btn):not(:disabled):active {
    transform: translateY(var(--edge));
    box-shadow: 0 0 0 transparent;
}
:is(.primary-btn, .secondary-btn, .danger-btn):disabled { box-shadow: none; filter: grayscale(.4); }
.icon-btn { border-radius: 12px; }
.icon-btn:hover { background: var(--bg-glass-hover); }

/* Inputs: roomy and rounded with a clear focus ring. */
input:not([type="checkbox"]):not([type="radio"]):not([type="range"]), select, textarea {
    border: 2px solid var(--border-glass);
    border-radius: 12px;
    background-color: color-mix(in srgb, var(--bg-base) 70%, var(--bg-glass));
    font-weight: 600;
}
.light-theme input:not([type="checkbox"]):not([type="radio"]):not([type="range"]), .light-theme select, .light-theme textarea { background-color: #fff; }
input:focus, select:focus, textarea:focus { border-color: var(--accent-primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-primary) 20%, transparent); }

/* Sidebar & navigation */
#sidebar { background: var(--bg-surface, var(--bg-glass)); border-right: 2px solid var(--border-glass); }
.sidebar-header { border-bottom: 0; }
.logo-text { font-weight: 900; font-size: 1.4rem; letter-spacing: -.02em; }
.logo-mark { box-shadow: 0 4px 0 color-mix(in srgb, var(--accent-primary) 55%, #000); border-radius: 12px; }
.nav-links { gap: 4px; }
.nav-item {
    --nav-c: var(--accent-primary);
    border: 2px solid transparent;
    border-radius: 14px;
    font-weight: 800;
    letter-spacing: .02em;
    color: var(--text-secondary);
    padding: 10px 14px;
}
.nav-item i { color: var(--nav-c); font-size: 1.2rem; width: 26px; transition: transform .2s var(--ease-bounce); }
.nav-item:hover { background: var(--bg-glass-hover); }
.nav-item:hover i { transform: scale(1.12) rotate(-6deg); }
.nav-item.active {
    border: 2px solid color-mix(in srgb, var(--nav-c) 70%, transparent);
    border-left-width: 2px;
    background: color-mix(in srgb, var(--nav-c) 14%, transparent);
    color: var(--text-primary);
}
.nav-item[data-target="dashboard-view"] { --nav-c: var(--c-home); }
.nav-item[data-target="gpa-view"], .nav-item[data-target="grade-scenarios-view"] { --nav-c: var(--c-school); }
.nav-item[data-target="planner-view"], .nav-item[data-target="calendar-view"], .nav-item[data-target="schedule-view"] { --nav-c: var(--c-plan); }
.nav-item[data-target="flashcard-view"], .nav-item[data-target="analytics-view"], .nav-item[data-target="exam-arcade-view"] { --nav-c: var(--c-study); }
.nav-item[data-target="multiplayer-view"], .nav-item[data-target="leaderboard-view"], .nav-item[data-target="friends-view"] { --nav-c: var(--c-play); }
.nav-item[data-target="classes-view"] { --nav-c: var(--c-teach); }
.nav-item[data-target="profile-view"], .nav-item[data-target="shop-view"], .nav-item[data-target="inventory-view"] { --nav-c: var(--c-profile); }
.nav-item[data-target="settings-view"], .nav-item[data-target="about-view"], .nav-item[data-target="admin-view"] { --nav-c: var(--c-settings); }
body[data-color-scheme="monochrome"] .nav-item { --nav-c: var(--accent-primary); }
.sidebar-coin-count { font-weight: 900; }

/* Header */
#top-header { border-bottom: 2px solid var(--border-glass); background: var(--bg-base); }
.header-left h1 { font-weight: 900; font-size: 1.6rem; letter-spacing: -.02em; }
.header-badge { border-radius: 999px; border: 2px solid var(--border-glass); background: var(--bg-glass); font-weight: 800; }

/* Section headings, tabs and pills */
.view-header h2 { font-weight: 900; letter-spacing: -.02em; }
.view-header h2 i, .glass-card > h2 > i:first-child, .glass-card > h3 > i:first-child { color: var(--accent-primary); }
.shop-tab, .segmented > button, .study-mode-tabs button {
    border-radius: 999px;
    font-weight: 800;
}
.segmented {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 4px;
    border-radius: 16px;
    background: color-mix(in srgb, var(--bg-base) 60%, var(--bg-glass));
    border: 2px solid var(--border-glass);
}
.segmented > button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 40px;
    padding: 8px 16px;
    border-radius: 12px;
    color: var(--text-secondary);
    font-weight: 800;
}
.segmented > button:hover { color: var(--text-primary); background: var(--bg-glass-hover); }
.segmented > button.selected { background: var(--accent-primary); color: var(--accent-on-primary); box-shadow: 0 3px 0 color-mix(in srgb, var(--accent-primary) 60%, #000); }
.modal-content { border-radius: var(--border-radius-lg); border: 2px solid var(--border-glass); box-shadow: 0 8px 0 var(--border-glass), 0 30px 60px rgba(0,0,0,.35); }
.empty-state { border: 2px dashed color-mix(in srgb, var(--border-glass) 80%, transparent) !important; box-shadow: none !important; color: var(--text-secondary); text-align: center; border-radius: var(--border-radius-md); }
.empty-state > i:first-child { display: block; margin: 0 auto 8px; font-size: 1.8rem; color: var(--accent-primary); }
.course-weighted-pill { display: inline-block; margin-left: 6px; padding: 1px 8px; border-radius: 999px; background: color-mix(in srgb, var(--accent-secondary) 22%, transparent); color: var(--accent-secondary); font-style: normal; font-size: .7rem; font-weight: 900; vertical-align: middle; }
progress { height: 12px; border-radius: 999px; overflow: hidden; }
progress::-webkit-progress-bar { background: var(--bg-glass-hover); border-radius: 999px; }
progress::-webkit-progress-value { background: var(--accent-primary); border-radius: 999px; }

/* Friendly entrance for views (only when motion is welcome). */
@media (prefers-reduced-motion: no-preference) {
    .view:not(.hidden) { animation: sbViewIn .22s ease-out; }
}
@keyframes sbViewIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

@media (max-width: 768px) {
    #sidebar { border-right: 0; border-bottom: 2px solid var(--border-glass); }
    .nav-item.active { border-bottom-width: 2px; }
    .header-left h1 { font-size: 1.3rem; }
}

/* =====================================================================
   SHOP: flat open box with the best reward peeking over the rim
   ===================================================================== */
.open-box {
    --ob-w: 132px;
    --box-accent-2: var(--box-accent);
    position: relative;
    display: block;
    width: var(--ob-w);
    height: calc(var(--ob-w) * 1.06);
    margin: 0 auto;
    background: none;
    border-radius: 0;
    overflow: visible;
    isolation: isolate;
}
.open-box > span { position: absolute; display: block; }
.open-box .ob-glow {
    left: 2%; right: 2%; top: 4%; height: 70%;
    border-radius: 50%;
    background: radial-gradient(circle, color-mix(in srgb, var(--rarity, var(--box-accent)) 45%, transparent), transparent 68%);
    z-index: 0;
}
.open-box.peek-rare { --rarity: #4cc9f0; }
.open-box.peek-epic { --rarity: #b388ff; }
.open-box.peek-legendary { --rarity: #ffbf3c; }
.open-box.peek-mythic { --rarity: #ff6bcb; }
/* Dark inside of the box: the back rim visible above the front face. */
.open-box .ob-back {
    left: 10%; right: 10%; top: 44%; height: 14%;
    border-radius: 10px 10px 0 0;
    background: color-mix(in srgb, var(--box-accent) 38%, #0b0d1c);
    z-index: 1;
}
.open-box .ob-peek {
    left: 50%; top: 6%;
    width: 64%; height: 58%;
    transform: translateX(-50%);
    display: grid; place-items: end center;
    z-index: 2;
}
.open-box .ob-peek .player-avatar,
.open-box .ob-peek .shop-palette,
.open-box .ob-peek .aura-preview {
    width: 100% !important;
    height: 100% !important;
    border-radius: 16px;
    margin: 0;
    background: color-mix(in srgb, var(--rarity, var(--box-accent)) 16%, var(--bg-glass));
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--rarity, var(--box-accent)) 55%, transparent);
}
.open-box .ob-peek > i { font-size: 2.2rem; color: var(--box-accent); }
.open-box .ob-front {
    left: 4%; right: 4%; bottom: 4%; height: 44%;
    border-radius: 6px 6px 16px 16px;
    background: linear-gradient(180deg, var(--box-accent), color-mix(in srgb, var(--box-accent-2) 78%, #000));
    box-shadow: 0 6px 0 color-mix(in srgb, var(--box-accent) 45%, #000), inset 0 4px 0 rgba(255,255,255,.28);
    z-index: 3;
    display: grid; place-items: center;
}
.open-box .ob-band {
    position: absolute; top: 0; bottom: 0; left: 50%;
    width: 18%; margin-left: -9%;
    background: rgba(255,255,255,.32);
}
.open-box .ob-emblem {
    position: relative;
    display: grid; place-items: center;
    width: 38%; aspect-ratio: 1;
    border-radius: 50%;
    background: #fff;
    color: color-mix(in srgb, var(--box-accent) 70%, #000);
    font-size: calc(var(--ob-w) * .13);
    box-shadow: 0 3px 0 rgba(0,0,0,.18);
}
/* The lid has been knocked off to the right, resting at an angle. */
.open-box .ob-lid {
    right: -10%; top: 26%;
    width: 58%; height: 16%;
    border-radius: 8px;
    background: linear-gradient(180deg, color-mix(in srgb, var(--box-accent-2) 90%, #fff), var(--box-accent-2));
    box-shadow: 0 4px 0 color-mix(in srgb, var(--box-accent-2) 45%, #000);
    transform: rotate(24deg);
    transform-origin: 0 100%;
    z-index: 4;
    overflow: hidden;
}
.open-box .ob-lid .ob-band { width: 22%; margin-left: -11%; }
.open-box .ob-spark {
    width: 10px; height: 10px;
    background: #fff;
    clip-path: polygon(50% 0, 62% 38%, 100% 50%, 62% 62%, 50% 100%, 38% 62%, 0 50%, 38% 38%);
    z-index: 5;
    opacity: .9;
}
.open-box .ob-spark.s1 { left: 6%; top: 18%; }
.open-box .ob-spark.s2 { left: 78%; top: 4%; width: 14px; height: 14px; background: var(--rarity, #fff); }
.open-box .ob-spark.s3 { left: 20%; top: 2%; width: 7px; height: 7px; }
@media (prefers-reduced-motion: no-preference) {
    .box-card:hover .open-box .ob-peek,
    .box-featured .open-box .ob-peek,
    .open-box-lg .ob-peek { animation: obPeek 2.4s ease-in-out infinite; }
    .box-card:hover .open-box .ob-spark,
    .box-featured .open-box .ob-spark,
    .open-box-lg .ob-spark { animation: obTwinkle 1.6s ease-in-out infinite; }
    .open-box .ob-spark.s2 { animation-delay: .5s; }
    .open-box .ob-spark.s3 { animation-delay: 1s; }
}
@keyframes obPeek { 50% { transform: translate(-50%, -7%) rotate(-3deg); } }
@keyframes obTwinkle { 0%, 100% { transform: scale(.6); opacity: .4; } 50% { transform: scale(1.15) rotate(20deg); opacity: 1; } }

/* Cards in the shop grid */
.multiplayer-shop .box-card .open-box.shop-preview { height: calc(var(--ob-w) * 1.06); width: var(--ob-w); background: none; }
.multiplayer-shop .box-card .open-box .player-avatar { width: 100%; height: 100%; }
.multiplayer-shop .box-featured .open-box { --ob-w: 150px; grid-row: 1 / 4; animation: none; }
.multiplayer-shop .multiplayer-shop-item { border-width: 2px; border-radius: var(--border-radius-md); box-shadow: 0 var(--edge) 0 var(--border-glass); }
.multiplayer-shop .multiplayer-shop-item:hover { transform: translateY(-2px); box-shadow: 0 calc(var(--edge) + 2px) 0 color-mix(in srgb, var(--rarity, var(--accent-primary)) 50%, var(--border-glass)); }
body.compact-ui .open-box { --ob-w: 110px; }
@media (max-width: 760px) {
    .multiplayer-shop .box-featured .open-box { --ob-w: 96px; grid-row: 1 / 2; }
}
@media (max-width: 560px) {
    .multiplayer-shop .shop-grid > .box-card .open-box { --ob-w: 92px; grid-row: 1 / 3; }
}

/* Unboxing overlay: the open box with a silhouette until the reel lands. */
.unbox-box { width: auto; height: auto; }
.open-box-lg { --ob-w: 210px; }
.mystery-peek .ob-peek .player-avatar,
.mystery-peek .ob-peek .shop-palette,
.mystery-peek .ob-peek .aura-preview { filter: brightness(0) drop-shadow(0 0 10px color-mix(in srgb, var(--box-accent) 80%, #fff)); background: transparent; box-shadow: none; }
.mystery-peek .ob-peek::after {
    content: '?';
    position: absolute; inset: 0;
    display: grid; place-items: center;
    color: #fff; font-size: 3rem; font-weight: 900;
    text-shadow: 0 3px 0 rgba(0,0,0,.35);
}
.phase-shake .unbox-box .ob-lid { animation: obLidRattle .22s ease-in-out infinite alternate; }
.phase-shake .unbox-box .ob-peek { animation: obPeekHop .5s ease-in-out infinite; }
@keyframes obLidRattle { from { transform: rotate(18deg) translateY(0); } to { transform: rotate(30deg) translateY(-6px); } }
@keyframes obPeekHop { 50% { transform: translate(-50%, -12%); } }
@media (prefers-reduced-motion: reduce) {
    .open-box *, .phase-shake .unbox-box .ob-lid, .phase-shake .unbox-box .ob-peek { animation: none !important; }
}

/* =====================================================================
   CLASSES (students) & TEACH (teachers)
   ===================================================================== */
.classes-root { display: grid; gap: 18px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--c-teach); font-size: .78rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.teacher-hero { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px 24px; align-items: center;
    background: linear-gradient(135deg, color-mix(in srgb, var(--c-teach) 14%, var(--bg-glass)), var(--bg-glass) 60%); }
.teacher-hero h2 { margin: 6px 0; font-size: 1.7rem; }
.teacher-hero p { color: var(--text-secondary); max-width: 62ch; }
.teacher-hero-stats, .teacher-class-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(84px, 100%), 1fr)); gap: 8px; }
.teacher-hero-stats { min-width: min(100%, 360px); }
.teacher-hero-stats > div, .teacher-class-stats > div { display: grid; justify-items: center; gap: 2px; padding: 10px 8px; border-radius: 14px; background: var(--bg-glass); border: 2px solid var(--border-glass); text-align: center; }
.teacher-hero-stats strong { font-size: 1.5rem; font-weight: 900; }
.teacher-class-stats strong { font-size: 1.1rem; font-weight: 900; }
.teacher-hero-stats small, .teacher-class-stats small { color: var(--text-muted); font-size: .72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.teacher-hero-stats .warn strong, .teacher-class-stats .warn strong, .roster-missing.warn { color: var(--status-danger); }
.teacher-new-class > summary, .community-deck-browser > summary { list-style: none; display: flex; align-items: center; gap: 10px; cursor: pointer; font-weight: 900; font-size: 1.05rem; }
.teacher-new-class > summary::-webkit-details-marker { display: none; }
.teacher-new-class > summary i { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 10px; background: var(--accent-primary); color: var(--accent-on-primary); }
.teacher-class-form { display: grid; gap: 12px; margin-top: 14px; }
.teacher-class-form label, .teacher-deck-form label, .teacher-from-mine { display: grid; gap: 6px; color: var(--text-secondary); font-size: .88rem; font-weight: 800; }
.teacher-class-form .actions, .teacher-deck-form .actions { display: flex; flex-wrap: wrap; gap: 10px; }
.teacher-course-results { display: grid; gap: 6px; max-height: 280px; overflow-y: auto; }
.teacher-course-results:empty { display: none; }
.teacher-course-option { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 2px 12px; text-align: left; padding: 10px 12px; border-radius: 12px; border: 2px solid var(--border-glass); background: var(--bg-glass); }
.teacher-course-option:hover, .teacher-course-option.selected { border-color: var(--accent-primary); background: color-mix(in srgb, var(--accent-primary) 10%, var(--bg-glass)); }
.teacher-course-option small { color: var(--text-muted); }
.teacher-class-grid, .student-class-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 16px; }
.teacher-class-grid > .full-width, .student-class-grid > .full-width { grid-column: 1 / -1; }
.teacher-class-card { display: grid; gap: 12px; align-content: start; border-top: 6px solid var(--c-teach); }
.teacher-class-card header, .student-class-card header { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.teacher-class-card h3 { margin: 0; font-size: 1.2rem; }
.class-code-chip { display: inline-block; padding: 2px 10px; border-radius: 999px; background: color-mix(in srgb, var(--c-school) 20%, transparent); color: var(--text-primary); font-size: .74rem; font-weight: 900; letter-spacing: .04em; }
.class-section { color: var(--text-secondary); font-size: .82rem; font-weight: 800; }
.classes-back { justify-self: start; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.classes-tabs { justify-self: start; }
.tab-badge { display: inline-grid; place-items: center; min-width: 22px; height: 22px; padding: 0 6px; border-radius: 999px; background: var(--status-danger); color: #fff; font-size: .72rem; }
.tab-badge.muted { background: color-mix(in srgb, var(--text-muted) 30%, transparent); color: inherit; }
.classes-status { min-height: 1.2em; margin: 0; font-weight: 800; }
.classes-status:empty { display: none; }
.classes-status.success { color: var(--status-success); }
.classes-status.error { color: var(--status-danger); }
.roster-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 10px; }
.roster-toolbar input { flex: 1 1 200px; width: auto; }
.roster-toolbar label { display: inline-flex; align-items: center; gap: 8px; font-weight: 800; color: var(--text-secondary); }
.roster-toolbar select { width: auto; }
.roster-head, .roster-row > summary { display: grid; grid-template-columns: minmax(170px, 2fr) minmax(90px, 1fr) 80px 100px 64px minmax(90px, 1fr); align-items: center; gap: 10px; }
.roster-head { padding: 4px 16px; color: var(--text-muted); font-size: .72rem; font-weight: 900; text-transform: uppercase; letter-spacing: .06em; }
.roster-list { display: grid; gap: 8px; }
.roster-row { border: 2px solid var(--border-glass); border-radius: 14px; background: var(--bg-glass); }
.roster-row.needs-help { border-left: 6px solid var(--status-danger); }
.roster-row > summary { list-style: none; cursor: pointer; padding: 10px 14px; }
.roster-row > summary::-webkit-details-marker { display: none; }
.roster-row[open] { border-color: var(--accent-primary); }
.roster-name { display: flex; align-items: center; gap: 10px; min-width: 0; }
.roster-name > span:last-child { display: grid; min-width: 0; }
.roster-name strong, .roster-name small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.roster-name small, .roster-row small { color: var(--text-muted); font-size: .75rem; }
.roster-avatar { display: grid; place-items: center; flex: 0 0 auto; width: 36px; height: 36px; border-radius: 12px; background: color-mix(in srgb, var(--accent-primary) 22%, transparent); color: var(--text-primary); font-weight: 900; }
.roster-grade { font-weight: 800; }
.roster-grade.good strong { color: var(--status-success); }
.roster-grade.ok strong { color: var(--c-school); }
.roster-grade.meh strong { color: var(--status-warning); }
.roster-grade.bad strong { color: var(--status-danger); }
.roster-streak i { color: #ff8a3d; }
.roster-active { color: var(--text-secondary); font-size: .85rem; }
.roster-detail { display: grid; gap: 10px; padding: 0 14px 14px; border-top: 2px dashed var(--border-glass); padding-top: 12px; }
.roster-facts { display: flex; flex-wrap: wrap; gap: 6px 16px; color: var(--text-secondary); font-size: .85rem; }
.roster-facts i { color: var(--accent-primary); margin-right: 4px; }
.roster-due { display: grid; gap: 6px; }
.roster-due li { display: flex; justify-content: space-between; gap: 10px; padding: 8px 10px; border-radius: 10px; background: color-mix(in srgb, var(--bg-base) 50%, var(--bg-glass)); }
.roster-actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; }
.roster-note { margin-top: 8px; font-size: .8rem; }
.teacher-sets-toolbar { display: grid; gap: 12px; margin-bottom: 14px; justify-items: start; }
.teacher-sets-toolbar > form { justify-self: stretch; }
.teacher-deck-form { display: grid; gap: 12px; }
.teacher-deck-form h3 { margin: 0; }
.teacher-deck-form textarea { font-family: var(--font-mono); font-size: .92rem; min-height: 200px; }
.teacher-deck-form code { padding: 1px 6px; border-radius: 6px; background: var(--bg-glass-hover); font-size: .8rem; }
.teacher-deck-list { display: grid; gap: 10px; }
.teacher-deck-card { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.teacher-deck-card h4 { margin: 0 0 2px; }
.teacher-deck-card small, .teacher-deck-card p { color: var(--text-secondary); }
.teacher-deck-card .actions { display: flex; flex-wrap: wrap; gap: 8px; }
.student-join { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 16px; align-items: center;
    background: linear-gradient(135deg, color-mix(in srgb, var(--accent-primary) 14%, var(--bg-glass)), var(--bg-glass) 65%); }
.student-join h2 { margin: 0 0 4px; }
.student-join p { color: var(--text-secondary); max-width: 60ch; font-size: .9rem; }
.class-suggestions { display: grid; gap: 10px; }
.class-suggestions h3 { margin: 0; }
.class-suggestion { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px; border-radius: 14px; border: 2px solid var(--border-glass); }
.class-suggestion > span, .class-deck-list li > span:nth-child(2) { display: grid; min-width: 0; }
.class-suggestion small, .student-class-card small, .class-deck-list small { color: var(--text-secondary); }
.student-class-card { display: grid; gap: 12px; align-content: start; border-top: 6px solid var(--accent-primary); }
.student-class-card h3 { margin: 6px 0 2px; }
.class-deck-list { display: grid; gap: 8px; }
.class-deck-list li { display: grid; grid-template-columns: auto minmax(0, 1fr) auto auto; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 12px; background: color-mix(in srgb, var(--bg-base) 50%, var(--bg-glass)); }
.class-deck-list b { color: var(--status-warning); }
.class-deck-icon { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; background: color-mix(in srgb, var(--c-study) 22%, transparent); color: var(--c-study); }
.deck-author.teacher-set { color: var(--c-teach); font-weight: 800; }
.muted { color: var(--text-muted); }
.classes-skeleton { display: grid; gap: 14px; }
.classes-skeleton span { display: block; height: 120px; border-radius: var(--border-radius-md); background: linear-gradient(90deg, var(--bg-glass), var(--bg-glass-hover), var(--bg-glass)); background-size: 200% 100%; animation: sbShimmer 1.2s linear infinite; }
@keyframes sbShimmer { to { background-position: -200% 0; } }
@media (max-width: 860px) {
    .teacher-hero, .student-join { grid-template-columns: minmax(0, 1fr); }
    .roster-head { display: none; }
    .roster-row > summary { grid-template-columns: minmax(0, 1fr) auto; }
    .roster-row > summary > :nth-child(n+4) { display: none; }
    .roster-row > summary > .roster-missing { grid-column: 2; }
    .class-deck-list li { grid-template-columns: auto minmax(0, 1fr); }
    .class-deck-list li > button { grid-column: span 1; }
}

/* =====================================================================
   PERFORMANCE: cheap Chromebooks
   ===================================================================== */
/* Hidden views skip layout/paint entirely; offscreen big lists render lazily. */
.view.hidden { content-visibility: hidden; }
.deck-grid > *, .roster-row, .multiplayer-shop-item, .community-deck-card { content-visibility: auto; contain-intrinsic-size: auto 220px; }
.roster-row { contain-intrinsic-size: auto 64px; }
/* Low-power devices keep quick one-shot feedback but drop looping animations. */

/* Workspace sub-tabs: a pill bar under the header. */
.workspace-tabs { gap: 6px; padding: 14px var(--spacing-xl) 6px; }
.workspace-tab { min-height: 40px; padding: 8px 16px; border: 2px solid var(--border-glass); border-radius: 999px; background: var(--bg-glass); color: var(--text-secondary); font-weight: 800; }
.workspace-tab:hover { color: var(--text-primary); background: var(--bg-glass-hover); }
.workspace-tab.selected { padding: 8px 16px; border-width: 2px; text-decoration: none; color: var(--accent-on-primary); background: var(--accent-primary); border-color: var(--accent-primary); box-shadow: 0 3px 0 color-mix(in srgb, var(--accent-primary) 60%, #000); }
@media (max-width: 768px) { .workspace-tabs { flex-wrap: nowrap; overflow-x: auto; padding: 10px var(--spacing-md) 4px; scrollbar-width: none; } }

/* ===== Flashcard study: focus mode ===== */
#active-study-area:not(.hidden) {
    position: fixed; inset: 0; z-index: 60; width: auto; max-width: none; margin: 0;
    border: 0; border-radius: 0; box-shadow: none; overflow-y: auto;
    padding: max(16px, env(safe-area-inset-top)) clamp(14px, 4vw, 40px) calc(24px + env(safe-area-inset-bottom));
    background: var(--bg-base); display: flex; flex-direction: column; align-items: center; gap: 10px;
}
body.studying { overflow: hidden; }
#active-study-area > * { width: 100%; max-width: 680px; }
#active-study-area .study-header { margin-bottom: 0; }
#active-study-area.is-cram .study-progress-track span { background: linear-gradient(90deg, #f59e0b, #f97316); }
.study-progress-track { height: 14px; border-radius: 999px; background: var(--bg-glass); border: 2px solid var(--border-glass); overflow: hidden; }
.study-progress-track span { display: block; height: 100%; width: 100%; transform-origin: left; transform: scaleX(0); border-radius: inherit; background: linear-gradient(90deg, var(--accent-secondary), var(--accent-primary)); transition: transform .35s ease; }
.study-toolbar { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.chip-btn, .chip-toggle { display: inline-flex; align-items: center; gap: 6px; min-height: 36px; padding: 6px 12px; border-radius: 999px; border: 2px solid var(--border-glass); background: var(--bg-glass); color: var(--text-secondary); font: inherit; font-weight: 800; font-size: .85rem; cursor: pointer; box-shadow: none; }
.chip-btn:hover, .chip-toggle:hover { color: var(--text-primary); }
.chip-btn.is-on { color: #f59e0b; border-color: #f59e0b; background: color-mix(in srgb, #f59e0b 14%, transparent); }
.chip-toggle input { width: 16px; height: 16px; margin: 0; accent-color: var(--accent-primary); }
.chip-toggle:has(input:checked) { color: var(--accent-primary); border-color: var(--accent-primary); }
.study-combo { font-weight: 900; color: #f97316; animation: sbPop .3s ease; }
.study-keys { margin-left: auto; font-size: .75rem; color: var(--text-secondary); }
.study-keys kbd { font: inherit; font-weight: 800; padding: 1px 6px; border-radius: 6px; border: 1px solid var(--border-glass); border-bottom-width: 3px; background: var(--bg-glass); }
@media (hover: none), (max-width: 640px) { .study-keys { display: none; } }
#active-study-area .flashcard-container { height: clamp(220px, 46dvh, 380px); margin-bottom: 4px; max-width: 680px; }
#active-study-area .flashcard-front, #active-study-area .flashcard-back { border: 2px solid var(--border-glass); border-bottom-width: 6px; font-weight: 800; font-size: clamp(1.15rem, 3.2vw, 1.7rem); box-shadow: none; }
#active-study-area .flashcard-back { border-color: color-mix(in srgb, var(--accent-primary) 45%, var(--border-glass)); }
#active-study-area .study-controls { max-width: 680px; }
.sm2-btn { border-radius: 14px; padding: 12px 4px; font-size: .95rem; font-weight: 900; box-shadow: 0 4px 0 rgba(0, 0, 0, .28); }
.sm2-btn:hover { transform: translateY(-1px); }
.sm2-btn:active { transform: translateY(3px); box-shadow: 0 1px 0 rgba(0, 0, 0, .28); }
.sm2-btn.suggested { outline: 3px solid #fff; outline-offset: 2px; }
.study-type-form { display: flex; gap: 8px; }
.study-type-form input { flex: 1; min-width: 0; font-size: 1.05rem; }
.study-type-result { margin: 0; padding: 10px 14px; border-radius: 12px; font-weight: 800; }
.study-type-result.is-right { background: color-mix(in srgb, #16a34a 18%, transparent); color: #22c55e; }
.study-type-result.is-wrong { background: color-mix(in srgb, #dc2626 16%, transparent); color: #f87171; }
#active-study-area.show-summary > :not(.study-header):not(.study-progress-track):not(.study-summary) { display: none !important; }
#active-study-area.show-summary .focus-timer-control, #active-study-area.show-summary #study-progress { visibility: hidden; }
.study-summary { text-align: center; display: grid; gap: 12px; justify-items: center; padding: 18px 0; animation: sbViewIn .35s ease; }
.study-summary h3 { font-size: clamp(1.5rem, 5vw, 2.2rem); margin: 0; }
.study-summary > p { margin: 0; color: var(--text-secondary); }
.study-summary-burst { width: 96px; height: 96px; border-radius: 50%; display: grid; place-items: center; font-size: 2.6rem; color: #fff; background: radial-gradient(circle at 35% 30%, #fde047, #f59e0b 60%, #d97706); box-shadow: 0 6px 0 #b45309, 0 0 0 10px color-mix(in srgb, #f59e0b 18%, transparent); animation: sbPop .5s cubic-bezier(.3, 1.6, .5, 1); }
.study-summary-stats { width: 100%; display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.study-summary-stats div { padding: 12px 6px; border-radius: 14px; border: 2px solid var(--border-glass); background: var(--bg-glass); display: grid; }
.study-summary-stats strong { font-size: 1.35rem; font-weight: 900; }
.study-summary-stats span { font-size: .78rem; color: var(--text-secondary); font-weight: 700; }
.study-summary-bars { width: 100%; display: grid; gap: 6px; }
.ssb { display: grid; grid-template-columns: 56px 1fr 28px; align-items: center; gap: 8px; font-size: .85rem; font-weight: 800; text-align: left; }
.ssb i { height: 10px; border-radius: 99px; background: var(--bg-glass); position: relative; overflow: hidden; }
.ssb i::after { content: ""; position: absolute; inset: 0; width: var(--w); border-radius: inherit; background: currentColor; }
.ssb.ssb-q1 { color: #ef4444; } .ssb.ssb-q3 { color: #f59e0b; } .ssb.ssb-q4 { color: #22c55e; } .ssb.ssb-q5 { color: #0ea5e9; }
.ssb span, .ssb b { color: var(--text-primary); }
.study-summary .actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
@keyframes sbPop { from { transform: scale(.4); opacity: 0; } to { transform: none; opacity: 1; } }
@media (max-width: 520px) { .study-summary-stats { grid-template-columns: repeat(2, 1fr); } }

/* ===== Deck cards ===== */
.deck-card { cursor: default; text-align: left; display: flex; flex-direction: column; gap: 10px; }
.deck-card i { font-size: inherit; color: inherit; margin: 0; }
.deck-card-top { display: flex; gap: 12px; align-items: center; }
.deck-card-title { min-width: 0; display: grid; gap: 2px; }
.deck-card-title h3 { margin: 0; font-size: 1.1rem; overflow-wrap: anywhere; }
.deck-ring { --p: 0; flex: 0 0 auto; width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; background: conic-gradient(var(--accent-secondary) calc(var(--p) * 1%), var(--bg-glass-hover) 0); }
.deck-ring span { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; background: var(--bg-secondary); font-size: .72rem; font-weight: 900; }
.deck-stats { display: flex; flex-wrap: wrap; gap: 6px; }
.deck-stats span { display: inline-flex; gap: 5px; align-items: center; padding: 3px 9px; border-radius: 999px; background: var(--bg-glass); border: 1px solid var(--border-glass); font-size: .78rem; font-weight: 800; color: var(--text-secondary); }
.deck-stats .is-due { color: var(--accent-primary); border-color: color-mix(in srgb, var(--accent-primary) 50%, transparent); }
.deck-stats .is-star { color: #f59e0b; }
.deck-stats .is-weak { color: #f87171; }
.deck-main-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.deck-main-actions .primary-btn { flex: 1 1 auto; }
.deck-main-actions .secondary-btn { min-width: 44px; padding-inline: 12px; }
.deck-more summary { cursor: pointer; font-weight: 800; font-size: .85rem; color: var(--text-secondary); list-style: none; }
.deck-more summary::-webkit-details-marker { display: none; }
.deck-more[open] { display: grid; gap: 8px; }
.deck-more .actions { display: flex; flex-wrap: wrap; gap: 6px; }
.star-toggle.is-on { color: #f59e0b; border-color: #f59e0b; }
.deck-quick-add { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 10px; margin: 10px 0; border-radius: 14px; border: 2px dashed color-mix(in srgb, var(--accent-primary) 45%, var(--border-glass)); background: color-mix(in srgb, var(--accent-primary) 6%, transparent); }
.deck-quick-add input { flex: 1 1 180px; min-width: 0; }
.deck-quick-add-label { font-weight: 900; color: var(--accent-primary); font-size: .85rem; }

/* Open-box tuning: the reward floats free above the rim, lid leans against the side. */
.open-box .ob-peek { top: -2%; width: 74%; height: 62%; }
.open-box .ob-peek .player-avatar,
.open-box .ob-peek .aura-preview { background: transparent; box-shadow: none; filter: drop-shadow(0 0 calc(var(--ob-w) * .06) color-mix(in srgb, var(--rarity, var(--box-accent)) 70%, transparent)) drop-shadow(0 3px 0 rgba(0, 0, 0, .25)); }
.open-box .ob-peek .shop-palette { width: 70% !important; height: 70% !important; margin-bottom: 6%; transform: rotate(-8deg); }
.open-box .ob-lid { right: -14%; top: 42%; width: 50%; transform: rotate(38deg); }
.open-box .ob-peek .player-avatar, .open-box .ob-peek .aura-preview { border: 0 !important; }

/* ==========================================================================
   Quick-play arcade: chunky answer tiles, HUD chips, results card
   ========================================================================== */
.arcade-play { display: grid; gap: 14px; text-align: left; }
.arcade-hud { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.arcade-count { margin-right: auto; font-weight: 800; color: var(--text-secondary); letter-spacing: .02em; }
.arcade-chip {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 5px 12px; border-radius: 999px;
    background: var(--bg-glass-hover); border: 1px solid var(--border-glass);
    font-weight: 800; font-size: .9rem; font-variant-numeric: tabular-nums;
}
.arcade-chip .fa-bolt { color: #facc15; }
.arcade-chip.streak { color: #fb923c; border-color: color-mix(in srgb, #fb923c 50%, transparent); }
.arcade-chip.streak.hot { background: linear-gradient(90deg, #f97316, #ef4444); color: #fff; border-color: transparent; }
.arcade-chip.lives { color: #f43f5e; gap: 3px; }
.arcade-chip.lives .lost { color: var(--text-muted, #64748b); opacity: .45; }
.arcade-chip.timer.low { color: #fff; background: #ef4444; border-color: transparent; }
.arcade-track { height: 10px; border-radius: 999px; background: var(--bg-glass-hover); overflow: hidden; }
.arcade-track > span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary, var(--accent-primary))); transition: width .35s ease; }
.arcade-track.lightning > span { background: linear-gradient(90deg, #facc15, #f97316); transition: width 1s linear; }
.arcade-question-card {
    padding: 22px 22px 18px; border-radius: 20px;
    background: var(--bg-glass); border: 2px solid var(--border-glass);
    box-shadow: 0 4px 0 var(--border-glass);
    text-align: center;
}
.arcade-question-label { font-size: .75rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; color: var(--text-secondary); }
.arcade-game-content .arcade-question-card h4 { margin: 8px 0 4px; font-size: clamp(1.25rem, 3vw, 1.7rem); overflow-wrap: anywhere; }
.arcade-question-card .true-false-statement { margin: 12px 0 0; }
.arcade-question-card img { max-height: 160px; margin: 10px auto 0; border-radius: 12px; }
.arcade-answer-options { gap: 10px; }
.arcade-answer-options .arcade-option {
    display: flex; align-items: center; gap: 12px;
    min-height: 64px; padding: 12px 14px;
    border: 2px solid var(--border-glass); border-radius: 16px;
    background: var(--bg-glass); color: var(--text-primary);
    box-shadow: 0 4px 0 var(--border-glass);
    font: inherit; font-weight: 700; text-align: left; cursor: pointer;
    transition: transform .08s ease, box-shadow .08s ease, border-color .15s, background .15s;
}
.arcade-option span { flex: 1; overflow-wrap: anywhere; }
.arcade-option kbd {
    flex: none; display: grid; place-items: center;
    min-width: 30px; height: 30px; border-radius: 9px;
    background: var(--bg-glass-hover); border: 1px solid var(--border-glass);
    font-family: inherit; font-weight: 800; font-size: .85rem; line-height: 1; color: var(--text-secondary);
}
.arcade-answer-options .arcade-option:hover:not(:disabled) { border-color: var(--accent-primary); background: var(--bg-glass-hover); }
.arcade-answer-options .arcade-option:active:not(:disabled) { transform: translateY(3px); box-shadow: 0 1px 0 var(--border-glass); }
.arcade-answer-options .arcade-option:disabled { cursor: default; opacity: .6; }
.arcade-answer-options .arcade-option.correct { opacity: 1; border-color: #16a34a; background: #22c55e; color: #fff; box-shadow: 0 4px 0 #15803d; }
.arcade-answer-options .arcade-option.wrong { opacity: 1; border-color: #dc2626; background: #ef4444; color: #fff; box-shadow: 0 4px 0 #b91c1c; }
.arcade-option.correct kbd, .arcade-option.wrong kbd { background: rgba(255,255,255,.22); border-color: transparent; color: #fff; }
.arcade-answer-options.tf .arcade-option { justify-content: center; font-size: 1.15rem; min-height: 72px; }
.arcade-answer-options.tf .arcade-option span { flex: none; }
.arcade-answer-options.tf .tf-true:not(:disabled) { border-color: color-mix(in srgb, #22c55e 55%, var(--border-glass)); }
.arcade-answer-options.tf .tf-false:not(:disabled) { border-color: color-mix(in srgb, #ef4444 55%, var(--border-glass)); }
.arcade-feedback:empty { display: none; }
.arcade-feedback { display: grid; gap: 10px; padding: 14px 16px; border-radius: 16px; border: 2px solid transparent; }
.arcade-feedback.good { background: color-mix(in srgb, #22c55e 14%, var(--bg-glass)); border-color: color-mix(in srgb, #22c55e 45%, transparent); }
.arcade-feedback.bad { background: color-mix(in srgb, #ef4444 12%, var(--bg-glass)); border-color: color-mix(in srgb, #ef4444 45%, transparent); }
.arcade-feedback-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 1.15rem; }
.arcade-feedback.good strong { color: #16a34a; }
.arcade-feedback.bad strong { color: #ef4444; }
.arcade-gain { font-weight: 900; color: #ca8a04; }
.arcade-feedback-answer span { font-weight: 700; color: var(--text-secondary); }
.arcade-feedback .primary-btn { justify-self: end; }
.arcade-feedback kbd, .arcade-feedback .primary-btn kbd { margin-left: 6px; padding: 1px 6px; border-radius: 6px; background: rgba(255,255,255,.2); font-family: inherit; font-weight: 700; font-size: .7rem; line-height: 1.4; }

.arcade-results { display: grid; justify-items: center; gap: 10px; padding: 10px 0; }
.arcade-results h4 { margin: 0; font-size: 1.6rem; }
.arcade-results-line { margin: 0; color: var(--text-secondary); }
.arcade-stars { display: flex; gap: 8px; font-size: 2.6rem; color: var(--bg-glass-hover); }
.arcade-stars .fa-star:nth-child(2) { transform: translateY(-10px); font-size: 3.1rem; }
.arcade-stars .earned { color: #facc15; filter: drop-shadow(0 3px 0 #ca8a04); }
.arcade-results-stats { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 6px 0; }
.arcade-results-stats > div { display: grid; min-width: 92px; padding: 10px 12px; border-radius: 14px; background: var(--bg-glass); border: 2px solid var(--border-glass); text-align: center; }
.arcade-results-stats strong { font-size: 1.35rem; font-variant-numeric: tabular-nums; }
.arcade-results-stats span { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--text-secondary); }
.arcade-results-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.memory-card { border-width: 2px; border-radius: 14px; box-shadow: 0 4px 0 var(--border-glass); font-family: inherit; }
.memory-card:not(.revealed):not(.matched) { color: var(--accent-primary); font-size: 1.5rem; font-weight: 900; }
@media (prefers-reduced-motion: no-preference) {
    .arcade-option.wrong { animation: arcadeShake .35s ease; }
    .arcade-option.correct, .arcade-results .earned { animation: arcadePop .4s ease both; }
    .arcade-results .earned { animation-delay: calc(var(--i) * .15s); }
    .arcade-chip.streak.hot .fa-fire { animation: arcadeFlicker .6s ease-in-out infinite alternate; }
}
@keyframes arcadeShake { 25% { transform: translateX(-6px); } 50% { transform: translateX(5px); } 75% { transform: translateX(-3px); } }
@keyframes arcadePop { 0% { transform: scale(.85); } 60% { transform: scale(1.08); } 100% { transform: scale(1); } }
@keyframes arcadeFlicker { to { transform: scale(1.2) rotate(-6deg); } }
@media (max-width: 640px) {
    .arcade-answer-options .arcade-option { min-height: 56px; }
    .arcade-answer-options.tf { grid-template-columns: 1fr 1fr; }
    .arcade-option kbd { display: none; }
}
#arcade-game-title, .arcade-header { font-family: var(--font-main); font-weight: 900; letter-spacing: 0; }

/* Classes: automatic access (no join codes) */
.teacher-new-class h3 { display: flex; align-items: center; gap: 10px; margin: 0; font-size: 1.05rem; font-weight: 900; }
.glass-card.teacher-new-class > h3 > i { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 10px; background: var(--accent-primary); color: var(--accent-on-primary); }
.teacher-class-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.teacher-class-stats > div { padding: 8px 4px; min-width: 0; }
.teacher-class-stats small { overflow-wrap: anywhere; }
.teacher-course-option span { display: grid; gap: 2px; min-width: 0; }
.teacher-course-option > i { font-size: 1.3rem; color: var(--accent-primary); }
.teacher-course-option.added { opacity: .75; cursor: default; border-style: dashed; }
.teacher-course-option.added > i { color: var(--status-success, #2bb673); }
.teacher-new-class { position: relative; z-index: 5; overflow: visible; }
.teacher-class-form .teacher-course-search-label { margin: 0; }
.teacher-course-combobox { position: relative; }
.teacher-course-combobox > i { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-muted); pointer-events: none; }
.teacher-course-combobox input { width: 100%; padding-left: 40px; }
.teacher-course-combobox .teacher-course-results { position: absolute; z-index: var(--z-tooltip, 50); top: calc(100% + 6px); left: 0; right: 0; max-height: min(320px, 55vh); overflow-y: auto; overscroll-behavior: contain; padding: 6px; border: 2px solid var(--border-glass); border-radius: 14px; background: var(--bg-base); box-shadow: var(--shadow-lg, 0 18px 40px rgba(0,0,0,.3)); }
.teacher-course-combobox .teacher-course-option { width: 100%; cursor: pointer; color: var(--text-primary); }
.teacher-course-combobox .teacher-course-option.active, .teacher-course-combobox .teacher-course-option:focus-visible { border-color: var(--accent-primary); background: color-mix(in srgb, var(--accent-primary) 14%, var(--bg-glass)); outline: none; }
.teacher-course-option strong { overflow-wrap: anywhere; }
.teacher-course-empty { margin: 0; padding: 10px; }
.teacher-course-results[aria-busy="true"] { opacity: .6; pointer-events: none; }
.class-auto-note { display: flex; align-items: center; gap: 8px; margin: 8px 0 0; color: var(--text-secondary); font-size: .88rem; font-weight: 700; }
.class-auto-note i { color: var(--accent-primary); }
.roster-removed { margin-top: 14px; }
.roster-removed summary { cursor: pointer; font-weight: 800; color: var(--text-secondary); }
.roster-removed ul { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 8px; }
.roster-removed li { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.roster-removed small, .class-waiting { color: var(--text-muted); }
.class-waiting { margin-top: 12px; font-size: .85rem; }

/* Optional banners occupy ordinary footer space, never navigation or overlays. */
.ad-slot[hidden], .ad-slot:has(ins.adsbygoogle[data-ad-status="unfilled"]) { display: none !important; }
.ad-slot { display: block; box-sizing: border-box; width: 100%; min-width: 0; max-width: min(970px, 100%); min-height: 116px; margin: 28px auto 8px; padding: 12px 0 0; border-top: 1px solid var(--glass-border, rgba(128,128,128,.2)); text-align: center; overflow: hidden; contain: inline-size; grid-column: 1 / -1; flex: 0 0 auto; align-self: stretch; }
.ad-slot-label { display: block; margin-bottom: 6px; font-size: .65rem; color: var(--text-secondary); letter-spacing: .06em; }
.ad-slot .adsbygoogle { display: block; width: 100%; min-width: 0; max-width: 100%; height: 90px; overflow: hidden; }
body.tutorial-active .ad-slot, body.studying .ad-slot { display: none !important; }