/* ============================================================
   GRINDLY · STUDENT MODE · studentmode.css
   Poppins headers · Inter body · JetBrains Mono numbers
   Fiery ember · generous space · notebook paper
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Poppins:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* ============================================================
   01 · TOKENS
   ============================================================ */
:root {
  color-scheme: light;

  /* Paper */
  --paper-base: #fef9e8;
  --paper-line: rgba(255, 69, 0, 0.11);
  --paper-margin: rgba(255, 69, 0, 0.28);
  --paper-ruling: 32px;
  --paper-margin-x: 76px;

  /* Ink scale (paper / cards) */
  --ink-0: #fef9e8;
  --ink-1: #ffffff;
  --ink-2: #faf5e8;
  --ink-3: #f2ecdc;
  --ink-4: #e2d9c2;
  --ink-5: #c9beab;

  --bg: var(--ink-0);
  --card: var(--ink-1);
  --border: rgba(60, 42, 15, 0.10);

  --text: #1a1a2e;
  --text-muted: #5a5a7a;
  --text-faint: #8a8aa8;

  /* Fiery ember */
  --ember: #ff4714;
  --ember-hot: #d61f00;
  --ember-warm: #ffaa33;
  --ember-soft: rgba(255, 71, 20, 0.12);
  --ember-glow: rgba(255, 71, 20, 0.38);

  --accent: var(--ember);
  --accent-dark: var(--ember-hot);
  --accent-light: var(--ember-soft);
  --accent-soft: var(--ember-soft);
  --accent-glow: var(--ember-glow);

  /* Signals */
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  --purple: #8b5cf6;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #ffaa33 0%, #ff6b35 40%, #ff2200 100%);
  --gradient-success: linear-gradient(135deg, #10b981, #059669);
  --gradient-warning: linear-gradient(135deg, #f59e0b, #d97706);
  --gradient-danger: linear-gradient(135deg, #ef4444, #dc2626);
  --gradient-info: linear-gradient(135deg, #3b82f6, #2563eb);
  --gradient-info-dark: linear-gradient(135deg, #2563eb, #1d4ed8);
  --gradient-purple: linear-gradient(135deg, #8b5cf6, #7c3aed);
  --gradient-flame: linear-gradient(135deg, #ffaa33 0%, #ff4714 50%, #d61f00 100%);

  /* Spacing */
  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 40px;
  --space-8: 56px;
  --space-10: 72px;
  --space-12: 96px;
  --space-16: 128px;

  --spacing-xs: var(--space-2);
  --spacing-sm: var(--space-3);
  --spacing-md: var(--space-4);
  --spacing-lg: var(--space-6);
  --spacing-xl: var(--space-8);
  --spacing-2xl: var(--space-12);

  --card-pad: var(--space-6);
  --section-gap: var(--space-10);
  --element-gap: var(--space-5);

  /* Radius */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;
  --radius-2xl: 36px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(60, 42, 15, 0.06);
  --shadow: 0 4px 12px rgba(60, 42, 15, 0.08);
  --shadow-md: 0 8px 24px rgba(60, 42, 15, 0.10);
  --shadow-lg: 0 16px 40px rgba(60, 42, 15, 0.14);
  --shadow-xl: 0 28px 60px rgba(60, 42, 15, 0.18);
  --shadow-2xl: 0 40px 90px rgba(60, 42, 15, 0.20);

  /* Type */
  --font-display: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  /* Motion */
  --transition-fast: 0.15s cubic-bezier(.2, .8, .2, 1);
  --transition: 0.24s cubic-bezier(.2, .8, .2, 1);
  --transition-slow: 0.42s cubic-bezier(.2, .8, .2, 1);

  /* Heatmap */
  --heat-0: rgba(60, 42, 15, 0.06);
  --heat-1: rgba(255, 71, 20, 0.20);
  --heat-2: rgba(255, 71, 20, 0.42);
  --heat-3: rgba(255, 71, 20, 0.66);
  --heat-4: rgba(255, 71, 20, 0.94);

  /* Poll */
  --poll-bg: #ffffff;
  --poll-text: #202124;
  --poll-muted: #5f6368;
  --poll-border: #dadce0;
  --poll-divider: #e0e0e0;
  --poll-input-bg: #ffffff;
  --poll-button-bg: #f1f3f4;
  --poll-button-hover: #e8eaed;
  --poll-radio: #5f6368;
}

/* ============================================================
   02 · THEMES
   ============================================================ */

/* LIGHT — alias for default ember/cream (no overrides) */
body.light { color-scheme: light; }

/* DARK */
body.dark {
  color-scheme: dark;
  --paper-base: #0f1014;
  --paper-line: rgba(255, 255, 255, 0.03);
  --paper-margin: rgba(255, 71, 20, 0.20);
  --ink-0: #0f1014;
  --ink-1: #17181e;
  --ink-2: #1e2028;
  --ink-3: #262933;
  --ink-4: #33363f;
  --ink-5: #4a4e5a;
  --bg: var(--ink-0);
  --card: var(--ink-1);
  --border: rgba(255, 255, 255, 0.06);
  --text: #eceef4;
  --text-muted: #9aa0b0;
  --text-faint: #5a6070;
  --ember: #ff5722;
  --ember-hot: #ff2200;
  --ember-warm: #ffb070;
  --ember-soft: rgba(255, 87, 34, 0.16);
  --ember-glow: rgba(255, 87, 34, 0.45);
  --accent: var(--ember);
  --accent-dark: var(--ember-hot);
  --accent-light: var(--ember-soft);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.40);
  --shadow: 0 4px 12px rgba(0,0,0,0.45);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.55);
  --shadow-lg: 0 16px 40px rgba(0,0,0,0.65);
  --shadow-xl: 0 28px 60px rgba(0,0,0,0.72);
  --heat-0: rgba(255, 255, 255, 0.05);
  --poll-bg: #111827;
  --poll-text: #e5e7eb;
  --poll-muted: #9ca3af;
  --poll-border: #374151;
  --poll-divider: #1f2937;
  --poll-input-bg: #0b1220;
  --poll-button-bg: #1f2937;
  --poll-button-hover: #374151;
  --poll-radio: #9ca3af;
}

/* OCEAN */
body.ocean {
  --paper-base: #eaf6fc;
  --paper-line: rgba(2, 132, 199, 0.10);
  --paper-margin: rgba(2, 132, 199, 0.26);
  --ink-0: #eaf6fc;
  --ink-1: #ffffff;
  --ink-2: #dbedf7;
  --ink-3: #c6e2f2;
  --ink-4: #8fc3e1;
  --ink-5: #5aa1c8;
  --bg: var(--ink-0);
  --card: var(--ink-1);
  --border: rgba(2, 132, 199, 0.15);
  --text: #062d3d;
  --text-muted: #3a7a95;
  --text-faint: #7aa8be;
  --ember: #0284c7;
  --ember-hot: #0369a1;
  --ember-warm: #38bdf8;
  --ember-soft: rgba(2, 132, 199, 0.14);
  --ember-glow: rgba(2, 132, 199, 0.32);
  --accent: #0284c7;
  --accent-dark: #0369a1;
  --accent-light: rgba(2, 132, 199, 0.12);
  --gradient-flame: linear-gradient(135deg, #7dd3fc, #0284c7, #075985);
  --gradient-primary: linear-gradient(135deg, #0ea5e9, #0369a1);
  --heat-1: rgba(2, 132, 199, 0.20);
  --heat-2: rgba(2, 132, 199, 0.42);
  --heat-3: rgba(2, 132, 199, 0.66);
  --heat-4: rgba(2, 132, 199, 0.92);
}

/* FOREST */
body.forest {
  --paper-base: #f0f7f0;
  --paper-line: rgba(5, 150, 105, 0.10);
  --paper-margin: rgba(5, 150, 105, 0.26);
  --ink-0: #f0f7f0;
  --ink-1: #ffffff;
  --ink-2: #e2efe2;
  --ink-3: #cde3cd;
  --ink-4: #a3cca3;
  --ink-5: #7aad7a;
  --bg: var(--ink-0);
  --card: var(--ink-1);
  --border: rgba(5, 150, 105, 0.15);
  --text: #0a2e1a;
  --text-muted: #3f7a55;
  --text-faint: #7fa88d;
  --ember: #059669;
  --ember-hot: #047857;
  --ember-warm: #34d399;
  --ember-soft: rgba(5, 150, 105, 0.14);
  --ember-glow: rgba(5, 150, 105, 0.32);
  --accent: #059669;
  --accent-dark: #047857;
  --accent-light: rgba(5, 150, 105, 0.12);
  --gradient-flame: linear-gradient(135deg, #6ee7b7, #059669, #065f46);
  --gradient-primary: linear-gradient(135deg, #10b981, #047857);
  --heat-1: rgba(5, 150, 105, 0.20);
  --heat-2: rgba(5, 150, 105, 0.42);
  --heat-3: rgba(5, 150, 105, 0.66);
  --heat-4: rgba(5, 150, 105, 0.92);
}

/* SUNSET */
body.sunset {
  --paper-base: #fff4ec;
  --paper-line: rgba(234, 88, 12, 0.10);
  --paper-margin: rgba(234, 88, 12, 0.26);
  --ink-0: #fff4ec;
  --ink-1: #ffffff;
  --ink-2: #fde8d8;
  --ink-3: #fbd6bb;
  --ink-4: #f5b48a;
  --ink-5: #e08a5a;
  --bg: var(--ink-0);
  --card: var(--ink-1);
  --border: rgba(234, 88, 12, 0.15);
  --text: #401a08;
  --text-muted: #9c5a2e;
  --text-faint: #c99368;
  --ember: #ea580c;
  --ember-hot: #c2410c;
  --ember-warm: #fb923c;
  --ember-soft: rgba(234, 88, 12, 0.14);
  --ember-glow: rgba(234, 88, 12, 0.32);
  --accent: #ea580c;
  --accent-dark: #c2410c;
  --accent-light: rgba(234, 88, 12, 0.12);
  --gradient-flame: linear-gradient(135deg, #fcd34d, #ea580c, #9a3412);
  --gradient-primary: linear-gradient(135deg, #fb923c, #c2410c);
  --heat-1: rgba(234, 88, 12, 0.20);
  --heat-2: rgba(234, 88, 12, 0.42);
  --heat-3: rgba(234, 88, 12, 0.66);
  --heat-4: rgba(234, 88, 12, 0.92);
}

/* PURPLE */
body.purple {
  color-scheme: dark;
  --paper-base: #140a26;
  --paper-line: rgba(179, 136, 255, 0.05);
  --paper-margin: rgba(179, 136, 255, 0.22);
  --ink-0: #140a26;
  --ink-1: #1d1038;
  --ink-2: #24144a;
  --ink-3: #2d1a5c;
  --ink-4: #3a2a5a;
  --ink-5: #5a4480;
  --bg: var(--ink-0);
  --card: var(--ink-1);
  --border: rgba(179, 136, 255, 0.15);
  --text: #f3eefe;
  --text-muted: #b9a8de;
  --text-faint: #7a6ba8;
  --ember: #b388ff;
  --ember-hot: #9b5cff;
  --ember-warm: #d6bcff;
  --ember-soft: rgba(179, 136, 255, 0.16);
  --ember-glow: rgba(179, 136, 255, 0.38);
  --accent: #b388ff;
  --accent-dark: #9b5cff;
  --accent-light: rgba(179, 136, 255, 0.14);
  --gradient-flame: linear-gradient(135deg, #e9d5ff, #b388ff, #7c3aed);
  --gradient-primary: linear-gradient(135deg, #c4b5fd, #9b5cff);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.35);
  --shadow: 0 4px 12px rgba(0,0,0,0.42);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.52);
  --shadow-lg: 0 16px 40px rgba(0,0,0,0.62);
  --shadow-xl: 0 28px 60px rgba(0,0,0,0.72);
  --heat-0: rgba(255, 255, 255, 0.05);
  --heat-1: rgba(179, 136, 255, 0.20);
  --heat-2: rgba(179, 136, 255, 0.42);
  --heat-3: rgba(179, 136, 255, 0.66);
  --heat-4: rgba(179, 136, 255, 0.92);
  --poll-bg: #1f1b5c;
  --poll-text: #ede9fe;
  --poll-muted: #c7d2fe;
  --poll-border: rgba(167, 139, 250, 0.4);
  --poll-divider: rgba(167, 139, 250, 0.25);
  --poll-input-bg: rgba(30, 27, 75, 0.55);
  --poll-button-bg: rgba(167, 139, 250, 0.2);
  --poll-button-hover: rgba(167, 139, 250, 0.3);
  --poll-radio: #c4b5fd;
}

/* RAINBOW — keep the party theme */
body.rainbow {
  color-scheme: dark;
  --paper-base: #0b1020;
  --paper-line: rgba(255, 122, 217, 0.05);
  --paper-margin: rgba(255, 122, 217, 0.22);
  --ink-0: #0b1020;
  --ink-1: #141a33;
  --ink-2: #1a2244;
  --ink-3: #222c5a;
  --ink-4: #384168;
  --ink-5: #505b88;
  --bg: #0b1020;
  --card: var(--ink-1);
  --border: rgba(255, 255, 255, 0.18);
  --text: #ffffff;
  --text-muted: #c9cff0;
  --text-faint: #7a7fa8;
  --ember: #ff7ad9;
  --ember-hot: #c026d3;
  --ember-warm: #7c3aed;
  --ember-soft: rgba(255, 122, 217, 0.18);
  --ember-glow: rgba(255, 122, 217, 0.40);
  --accent: #ff7ad9;
  --accent-dark: #c026d3;
  --accent-light: rgba(255, 122, 217, 0.2);
  --gradient-primary: linear-gradient(135deg, #ff7ad9, #7c3aed, #3b82f6, #22c55e, #f59e0b, #ef4444);
  --gradient-flame: linear-gradient(135deg, #ff7ad9, #a855f7, #3b82f6);
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.55);
  --shadow-lg: 0 16px 40px rgba(0,0,0,0.65);
  --shadow-xl: 0 28px 60px rgba(0,0,0,0.72);
  background:
    radial-gradient(800px 420px at 10% -5%, rgba(255, 122, 217, 0.25), transparent 60%),
    radial-gradient(900px 420px at 90% 0%, rgba(59, 130, 246, 0.22), transparent 60%),
    radial-gradient(700px 380px at 50% 10%, rgba(34, 197, 94, 0.20), transparent 70%),
    linear-gradient(135deg, #0b1020 0%, #111b3a 55%, #0b1020 100%);
  background-attachment: fixed;
}

/* PREMIUM */
body.premium {
  color-scheme: dark;
  --paper-base: #0a1219;
  --paper-line: rgba(64, 201, 255, 0.05);
  --paper-margin: rgba(64, 201, 255, 0.24);
  --ink-0: #0a1219;
  --ink-1: rgba(18, 28, 40, 0.98);
  --ink-2: rgba(30, 41, 59, 0.72);
  --ink-3: rgba(48, 62, 82, 0.72);
  --ink-4: rgba(70, 90, 118, 0.55);
  --ink-5: rgba(100, 120, 150, 0.50);
  --bg: #0a1219;
  --card: var(--ink-1);
  --border: rgba(64, 156, 255, 0.3);
  --text: #f0f8ff;
  --text-muted: #a6c1e0;
  --text-faint: #6a8bb0;
  --ember: #40c9ff;
  --ember-hot: #2d9cdb;
  --ember-warm: #c084fc;
  --ember-soft: rgba(64, 201, 255, 0.15);
  --ember-glow: rgba(64, 201, 255, 0.40);
  --accent: #40c9ff;
  --accent-dark: #2d9cdb;
  --accent-light: rgba(64, 201, 255, 0.15);
  --gradient-primary: linear-gradient(135deg, #40c9ff 0%, #497fff 50%, #c084fc 100%);
  --gradient-flame: linear-gradient(135deg, #40c9ff, #6a93ff, #c084fc);
  --success: #00e6a9;
  --warning: #ffb347;
  --danger: #ff6b8b;
  --info: #6a93ff;
  --purple: #c084fc;
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.4);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 15px 40px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 25px 60px rgba(0, 0, 0, 0.7);
  background:
    radial-gradient(ellipse at 20% 20%, rgba(64, 201, 255, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(192, 132, 252, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 40% 80%, rgba(0, 230, 169, 0.10) 0%, transparent 60%),
    linear-gradient(135deg, #0a1219 0%, #0f1a2a 50%, #0a1219 100%);
  background-attachment: fixed;
  min-height: 100vh;
}
body.premium h1, body.premium h2, body.premium h3,
body.premium h4, body.premium h5, body.premium h6 {
  background: linear-gradient(135deg, #40c9ff, #6a93ff, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: textShimmer 8s ease-in-out infinite;
}
@keyframes textShimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* ============================================================
   03 · RESET & BASE — notebook paper background
   ============================================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}
html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Ruled paper — default light only (not on dark themes with their own bg) */
body:not([class*="theme-"]):not(.dark):not(.ocean):not(.forest):not(.sunset):not(.purple):not(.rainbow):not(.premium)::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-color: var(--paper-base);
  background-image:
    linear-gradient(to bottom,
      transparent 0,
      transparent calc(var(--paper-ruling) - 1px),
      var(--paper-line) calc(var(--paper-ruling) - 1px),
      var(--paper-line) var(--paper-ruling));
  background-size: 100% var(--paper-ruling);
  background-repeat: repeat-y;
  transition: background-color var(--transition);
}
body:not([class*="theme-"]):not(.dark):not(.ocean):not(.forest):not(.sunset):not(.purple):not(.rainbow):not(.premium)::after {
  content: '';
  position: fixed;
  top: 0;
  left: var(--paper-margin-x);
  bottom: 0;
  width: 2px;
  background: var(--paper-margin);
  pointer-events: none;
  z-index: 0;
  transition: background var(--transition);
}
body.dark::before, body.ocean::before, body.forest::before,
body.sunset::before, body.purple::before, body.rainbow::before, body.premium::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: var(--paper-base);
  transition: background var(--transition);
}
body.dark::after, body.ocean::after, body.forest::after,
body.sunset::after, body.purple::after {
  content: '';
  position: fixed;
  top: 0;
  left: var(--paper-margin-x);
  bottom: 0;
  width: 2px;
  background: var(--paper-margin);
  pointer-events: none;
  z-index: 0;
}
.app-layout, .top-nav, .mobile-overlay { position: relative; z-index: 1; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--text);
}
h1 { font-size: 2.25rem; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }

code, kbd, samp, pre { font-family: var(--font-mono); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
::selection { background: var(--ember-soft); color: var(--ember-hot); }
img { max-width: 100%; height: auto; }

/* Mono numbers everywhere they matter */
.stat-value, .stat-number, .metric-value, .stats-overview-number,
.leaderboard-score, .leaderboard-rank, .class-card-code,
.class-code-display .code, .streak-number, .goal-stats,
.focus-timer-display, .wb-session-code, .date, .item-date,
.badge-count, .toast-time, .sync-status, .heatmap-value,
.focus-metrics strong, .timer {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

/* ============================================================
   04 · LAYOUT — fixed sidebar
   ============================================================ */
.app-layout {
  display: block;
  min-height: 100vh;
  transition: all var(--transition);
}
.main-content {
  margin-left: 280px;
  padding: var(--space-10) var(--space-8) var(--space-16);
  min-height: 100vh;
  transition: margin-left var(--transition);
  position: relative;
  z-index: 2;
}
.main-content > * { max-width: 1160px; margin-left: auto; margin-right: auto; }

/* ============================================================
   05 · SIDEBAR
   ============================================================ */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--card);
  border-right: 1px solid var(--border);
  padding: var(--space-8) var(--space-5);
  z-index: 100;
  transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  -webkit-overflow-scrolling: touch;
  box-shadow: 6px 0 30px rgba(60, 42, 15, 0.04);
}
.sidebar > * + * { margin-top: var(--space-6); }

.sidebar-header {
  text-align: center;
  padding-bottom: var(--space-5);
  border-bottom: 2px dashed var(--border);
}
.student-emoji {
  font-size: 3rem;
  margin-bottom: var(--space-3);
  display: block;
  animation: float 5s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%      { transform: translateY(-5px) rotate(2deg); }
}
.sidebar h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.15;
  background: var(--gradient-flame);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.sidebar-subtitle {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.4;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.class-switcher {
  background: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  overflow: hidden;
}
.class-switcher select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--text);
  font-size: 0.9375rem;
  font-family: var(--font-ui);
  font-weight: 600;
  cursor: pointer;
  text-overflow: ellipsis;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 420px;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 4px;
}
.sidebar-nav::-webkit-scrollbar { width: 6px; }
.sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--ink-4);
  border-radius: 3px;
}
.sidebar-nav::-webkit-scrollbar-thumb:hover { background: var(--ember); }
.sidebar-nav { scrollbar-width: thin; scrollbar-color: var(--ink-4) transparent; }

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 12px 16px;
  border-radius: var(--radius);
  color: var(--text);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  cursor: pointer;
  user-select: none;
  touch-action: manipulation;
  position: relative;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nav-item:hover {
  background: var(--ink-2);
  border-color: var(--border);
  transform: translateX(4px);
}
.nav-item.active {
  background: var(--gradient-flame);
  color: #fff;
  font-weight: 700;
  border-color: transparent;
  box-shadow: 0 6px 18px var(--ember-glow);
}
.nav-item.active:hover { transform: translateX(0); filter: brightness(1.05); }

.sidebar-stats {
  background: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  overflow: hidden;
}
.sidebar-stats > * + * { margin-top: var(--space-3); }
.sidebar-stats h3 {
  font-family: var(--font-ui);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  font-weight: 700;
}
.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.875rem;
  min-width: 0;
  gap: 8px;
}
.stat-row:last-child { border-bottom: none; }
.stat-row > span:first-child {
  color: var(--text-muted);
  font-weight: 500;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.stat-value {
  font-size: 1rem;
  color: var(--ember);
  flex-shrink: 0;
}

/* Stories */
.stories-section {
  background: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  max-height: 300px;
  overflow-y: auto;
}
.stories-section h3 {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: 6px;
}
.story-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-3);
  margin-bottom: var(--space-2);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.story-item:hover {
  background: var(--ember-soft);
  border-color: var(--ember);
  transform: translateY(-2px);
}
.story-name {
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
}
.story-quote {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.4;
}

/* Sidebar heatmap */
.heatmap-section {
  background: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.heatmap-section h3 {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: 6px;
}
.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 3px;
}
.heatmap-cell {
  width: 100%;
  padding-top: 100%;
  border-radius: 3px;
  background: var(--heat-0);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast);
}
.heatmap-cell .heatmap-value {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 0.6rem;
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
}
.heatmap-cell.level-0 { background: var(--heat-0); }
.heatmap-cell.level-1 { background: var(--heat-1); }
.heatmap-cell.level-2 { background: var(--heat-2); }
.heatmap-cell.level-3 { background: var(--heat-3); }
.heatmap-cell.level-4 { background: var(--heat-4); }
.heatmap-cell:hover { transform: translateY(-2px); }
.heatmap-legend {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-3);
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* Sidebar theme selector */
.theme-selector {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--ink-2);
  color: var(--text);
  font-size: 0.9375rem;
  font-family: var(--font-ui);
  font-weight: 600;
  cursor: pointer;
  text-overflow: ellipsis;
}

/* Sidebar toggle */
.sidebar-toggle {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 101;
  background: var(--gradient-flame);
  color: #fff;
  border: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 6px 20px var(--ember-glow);
  transition: all var(--transition);
  touch-action: manipulation;
}
.sidebar-toggle:hover { transform: scale(1.08); filter: brightness(1.06); }

/* Custom sidebar scrollbar */
.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb {
  background: var(--ink-4);
  border-radius: 3px;
}
.sidebar::-webkit-scrollbar-thumb:hover { background: var(--ember); }

/* ============================================================
   06 · TOP NAV (mobile)
   ============================================================ */
.top-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  padding: var(--space-2) var(--space-4);
  box-shadow: var(--shadow-sm);
  min-height: 60px;
}
.top-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  width: 100%;
  min-height: 44px;
}
.top-nav-header h2 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 130px;
  flex-shrink: 0;
}

.mobile-nav-controls {
  display: flex;
  flex: 1;
  justify-content: space-between;
  gap: 4px;
  margin: 0 6px;
  min-width: 0;
}
.mobile-nav-controls .btn {
  flex: 1;
  min-width: 0;
  padding: 6px 8px;
  font-size: 11px;
  height: 34px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  white-space: nowrap;
  overflow: hidden;
}
.mobile-nav-controls .btn span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mobile-menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-flame);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  width: 40px;
  height: 40px;
  font-size: 1.1rem;
  cursor: pointer;
  flex-shrink: 0;
  box-shadow: 0 4px 12px var(--ember-glow);
}

.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(60, 42, 15, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 99;
}
.mobile-overlay.active { display: block; }

/* ============================================================
   07 · DASHBOARD HEADER & CONTROLS
   ============================================================ */
.dashboard-header {
  margin-bottom: var(--space-10);
}
.dashboard-header h1 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: var(--space-4);
  color: var(--text);
  background: var(--gradient-flame);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.time-greeting {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: var(--space-2);
  letter-spacing: 0.3px;
  font-weight: 500;
}
.dashboard-subtitle {
  color: var(--text-muted);
  font-size: 1.0625rem;
  font-weight: 500;
  margin-bottom: var(--space-8);
  max-width: 660px;
}
.controls-bar {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  flex-wrap: wrap;
  padding: var(--space-4);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

/* ============================================================
   08 · PRO TIPS — sticky note personality
   ============================================================ */
.pro-tip {
  position: relative;
  background: #fef3c7;
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0.4) 0%, transparent 40%),
    repeating-linear-gradient(0deg, transparent 0, transparent 27px, rgba(0,0,0,0.04) 27px, rgba(0,0,0,0.04) 28px);
  border: none;
  border-radius: 3px 3px 12px 3px;
  padding: var(--space-5) var(--space-6);
  margin: var(--space-5) 0;
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  line-height: 1.65;
  color: #422006;
  box-shadow:
    0 1px 3px rgba(0,0,0,0.08),
    0 8px 24px rgba(60, 42, 15, 0.10),
    inset 0 0 60px rgba(255, 200, 100, 0.15);
  transform: rotate(-0.4deg);
  transition: all var(--transition);
  overflow: hidden;
}
.pro-tip::before {
  content: '📌';
  position: absolute;
  top: -10px;
  left: 20px;
  font-size: 1.1rem;
  transform: rotate(-12deg);
  filter: drop-shadow(0 2px 3px rgba(0,0,0,0.25));
  opacity: 0.85;
}
.pro-tip::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, transparent 50%, rgba(60, 42, 15, 0.10) 50%);
  border-radius: 0 0 12px 0;
  pointer-events: none;
}
.pro-tip:hover {
  transform: rotate(0deg) translateY(-3px);
  box-shadow:
    0 2px 6px rgba(0,0,0,0.10),
    0 16px 40px rgba(60, 42, 15, 0.16);
}
.pro-tip strong {
  color: #b45309;
  display: block;
  margin-bottom: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.pro-tip:nth-of-type(even) {
  background: #d1fae5;
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0.4) 0%, transparent 40%),
    repeating-linear-gradient(0deg, transparent 0, transparent 27px, rgba(0,0,0,0.03) 27px, rgba(0,0,0,0.03) 28px);
  color: #064e3b;
  transform: rotate(0.35deg);
}
.pro-tip:nth-of-type(even)::before { content: '📎'; }
.pro-tip:nth-of-type(even) strong { color: #047857; }

/* Sidebar pro-tips stay clean (no rotation) */
.sidebar .pro-tip {
  background: var(--ember-soft);
  background-image: none;
  border-left: 3px solid var(--ember);
  border-radius: 10px;
  padding: 12px 14px;
  margin: 0 0 12px;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text);
  transform: none;
  box-shadow: none;
  word-break: break-word;
  overflow-wrap: anywhere;
}
.sidebar .pro-tip::before,
.sidebar .pro-tip::after { display: none; }
.sidebar .pro-tip strong {
  color: var(--ember-hot);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

/* ============================================================
   09 · QUICK STATS
   ============================================================ */
.quick-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-5);
  min-height: 120px;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-flame);
  opacity: 0;
  transition: opacity var(--transition);
}
.stat-card:hover {
  border-color: var(--ember);
  box-shadow: 0 16px 40px rgba(255, 71, 20, 0.10);
  transform: translateY(-4px) scale(1.005);
}
.stat-card:hover::before { opacity: 1; }
.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  background: var(--ember-soft);
  color: var(--ember);
  flex-shrink: 0;
}
.stat-card:nth-child(2) .stat-icon { background: rgba(16, 185, 129, 0.12); color: var(--success); }
.stat-card:nth-child(3) .stat-icon { background: rgba(245, 158, 11, 0.12); color: var(--warning); }
.stat-card:nth-child(4) .stat-icon { background: rgba(59, 130, 246, 0.12); color: var(--info); }
.stat-content { flex: 1; min-width: 0; }
.stat-number {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ============================================================
   10 · CARDS
   ============================================================ */
.content-card,
.form-card,
.assignment-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  position: relative;
  overflow: hidden;
  background-image:
    radial-gradient(circle, rgba(60, 42, 15, 0.045) 1px, transparent 1px);
  background-size: 20px 20px;
  background-position: 0 0;
}
.content-card > *,
.form-card > * { position: relative; z-index: 1; }
.content-card:hover,
.form-card:hover,
.assignment-card:hover {
  border-color: var(--ember);
  box-shadow: 0 16px 40px rgba(255, 71, 20, 0.10);
  transform: translateY(-3px);
}
.content-card { padding: 0; }
.content-header {
  padding: var(--space-6) var(--space-8);
  border-bottom: 2px dashed var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  min-width: 0;
}
.content-header h2,
.form-card h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.content-header h2::before,
.form-card h2::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gradient-flame);
  margin-right: 4px;
  box-shadow: 0 0 10px var(--ember-glow);
  vertical-align: middle;
  flex-shrink: 0;
}
.content-body {
  padding: var(--space-8);
  max-height: 480px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.form-card { padding: var(--card-pad); }
.form-card > * + * { margin-top: var(--space-5); }

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-10);
}
.forms-section,
.content-section {
  grid-column: span 6;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* ============================================================
   11 · FORMS
   ============================================================ */
.form-group { margin-bottom: var(--space-5); }
.form-group:last-child { margin-bottom: 0; }
.form-group label {
  display: block;
  margin-bottom: var(--space-3);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text);
  white-space: nowrap;
}
input,
textarea,
select {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--ink-2);
  color: var(--text);
  font-size: 0.9375rem;
  font-family: var(--font-ui);
  font-weight: 500;
  transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
  max-width: 100%;
}
input::placeholder,
textarea::placeholder { color: var(--text-faint); font-weight: 400; }
input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--ember);
  background: var(--card);
  box-shadow: 0 0 0 4px var(--ember-soft), 0 0 20px var(--ember-soft);
}
textarea {
  min-height: 120px;
  resize: vertical;
  line-height: 1.6;
}

/* ============================================================
   12 · PRIORITY SELECTOR (task form)
   ============================================================ */
.priority-badge {
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}
.priority-urgent      { background: rgba(239, 68, 68, 0.10); color: var(--danger); border: 1px solid var(--danger); }
.priority-not-urgent  { background: rgba(245, 158, 11, 0.10); color: var(--warning); border: 1px solid var(--warning); }
.priority-optional    { background: rgba(156, 163, 175, 0.10); color: var(--text-muted); border: 1px solid var(--text-muted); }

.priority-selector {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.priority-option {
  flex: 1;
  padding: 10px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  user-select: none;
}
.priority-option:hover { transform: translateY(-2px); }
.priority-option.active { background: var(--ember-soft); border-color: var(--ember); color: var(--ember); }
.priority-option[data-priority="urgent"].active      { background: rgba(239, 68, 68, 0.10); border-color: var(--danger); color: var(--danger); }
.priority-option[data-priority="not-urgent"].active  { background: rgba(245, 158, 11, 0.10); border-color: var(--warning); color: var(--warning); }

/* ============================================================
   13 · TASKS
   ============================================================ */
.task-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.task-item {
  background: var(--ink-2);
  border: 1px solid var(--border);
  border-left: 4px solid var(--ember);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap;
  gap: var(--space-4);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  max-width: 100%;
}
.task-item:hover {
  border-color: var(--ember);
  transform: translateX(4px);
  box-shadow: 0 8px 20px var(--ember-soft);
  background: var(--card);
}
.task-item.completed {
  opacity: 0.65;
  border-left-color: var(--success);
}
.task-item.completed .task-text {
  text-decoration: line-through;
  color: var(--text-muted);
}
.task-item.urgent     { border-left-color: var(--danger); }
.task-item.not-urgent { border-left-color: var(--warning); }
.task-item.optional   { border-left-color: var(--text-muted); }

.task-text {
  flex: 1;
  min-width: 0;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition-fast);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text);
}
.task-text:hover { color: var(--ember); }
.task-actions {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  flex-shrink: 0;
}

/* ============================================================
   14 · ASSIGNMENTS
   ============================================================ */
.assignment-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.assignment-item {
  background: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: all var(--transition-fast);
  max-width: 100%;
  overflow: hidden;
}
.assignment-item:hover {
  transform: translateX(4px);
  border-color: var(--ember);
  box-shadow: 0 8px 20px var(--ember-soft);
}
.assignment-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
  gap: var(--space-3);
  min-width: 0;
}
.assignment-title {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text);
  font-size: 1.125rem;
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
}
.assignment-date {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--card);
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  white-space: nowrap;
  flex-shrink: 0;
  font-family: var(--font-mono);
}
.assignment-content {
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.7;
  font-size: 0.9375rem;
  font-weight: 500;
}
.assignment-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* ============================================================
   15 · CLASSROOM ITEMS
   ============================================================ */
.classroom-item {
  background: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-4);
  transition: all var(--transition-fast);
  max-width: 100%;
  overflow: hidden;
}
.classroom-item:hover {
  transform: translateX(4px);
  border-color: var(--ember);
  box-shadow: 0 8px 20px var(--ember-soft);
}
.classroom-item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
  gap: var(--space-3);
  min-width: 0;
}
.classroom-item-title {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text);
  font-size: 1.125rem;
  line-height: 1.2;
}
.classroom-item-date {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--card);
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  white-space: nowrap;
  flex-shrink: 0;
  font-family: var(--font-mono);
}
.classroom-item-content {
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.7;
  font-size: 0.9375rem;
  font-weight: 500;
}
.classroom-item-link {
  color: var(--ember);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
}
.classroom-item-link:hover { text-decoration: underline; }

/* ============================================================
   16 · POLLS (Google Forms look)
   ============================================================ */
.classroom-item.poll-card {
  background: var(--poll-bg) !important;
  border: 1px solid var(--poll-border) !important;
  border-radius: 8px !important;
  padding: 1rem 1.25rem !important;
  box-shadow: none !important;
  color: var(--poll-text) !important;
  font-family: Arial, Helvetica, sans-serif !important;
  transform: none !important;
  margin-bottom: var(--space-4) !important;
}
.classroom-item.poll-card:hover {
  transform: none !important;
  background: var(--poll-bg) !important;
  border-color: var(--poll-border) !important;
  box-shadow: none !important;
}
.classroom-item.poll-card .classroom-item-title {
  font-family: Arial, Helvetica, sans-serif !important;
  font-size: 1rem !important;
  font-weight: 500 !important;
  color: var(--poll-text) !important;
  white-space: normal !important;
}
.classroom-item.poll-card .classroom-item-date { display: none !important; }
.classroom-item.poll-card .poll-divider {
  height: 1px;
  background: var(--poll-divider);
  margin: 0.75rem 0 1rem;
}
.classroom-item.poll-card .poll-options { display: grid; gap: 0.5rem; }
.classroom-item.poll-card .poll-option {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.9rem;
  color: var(--poll-text);
}
.classroom-item.poll-card .poll-radio {
  width: 16px;
  height: 16px;
  accent-color: var(--poll-radio);
}
.classroom-item.poll-card .poll-other-input {
  width: 100%;
  border: 1px solid var(--poll-border);
  border-radius: 4px;
  padding: 6px 8px;
  font-size: 0.85rem;
  color: var(--poll-text);
  background: var(--poll-input-bg);
  margin-left: 8px;
}
.classroom-item.poll-card .poll-other-input:disabled {
  background: var(--poll-button-bg);
  color: var(--poll-muted);
}
.classroom-item.poll-card .poll-submit {
  margin-top: 0.75rem;
  background: var(--poll-button-bg) !important;
  color: var(--poll-text) !important;
  border: 1px solid var(--poll-border) !important;
  border-radius: 999px;
  padding: 6px 20px;
  font-weight: 600;
  font-size: 0.875rem;
  min-width: 72px;
  cursor: pointer;
}
.classroom-item.poll-card .poll-submit:hover { background: var(--poll-button-hover) !important; }
.classroom-item.poll-card .poll-actions {
  display: flex;
  gap: 1.25rem;
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--poll-muted);
  justify-content: center;
}
.classroom-item.poll-card .poll-action-link {
  cursor: pointer;
  text-decoration: underline;
  color: var(--poll-muted) !important;
}
.classroom-item.poll-card .poll-results { margin-top: 0.75rem; display: none; }
.classroom-item.poll-card .poll-result-row { margin-bottom: 0.5rem; }
.classroom-item.poll-card .poll-result-head {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--poll-muted);
  margin-bottom: 0.25rem;
}
.classroom-item.poll-card .poll-bar {
  height: 6px;
  background: var(--poll-button-bg);
  border-radius: 999px;
  overflow: hidden;
}
.classroom-item.poll-card .poll-bar-fill {
  height: 100%;
  background: var(--poll-text);
  width: 0%;
  transition: width 0.3s ease;
}
.classroom-item.poll-card .poll-status {
  margin-top: 0.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--poll-text);
}
.classroom-item.poll-card .poll-status.closed { color: #b45309; }
.classroom-item.poll-card .poll-status.voted  { color: #065f46; }
.classroom-item.poll-card .classroom-item-content { color: var(--poll-text) !important; }
.classroom-item.poll-card .poll-option span,
.classroom-item.poll-card .poll-result-head span,
.classroom-item.poll-card .poll-status { color: var(--poll-text) !important; }

/* ============================================================
   17 · TOOLS GRID (Study Tools / AI Help)
   ============================================================ */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-5);
}
.tool-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
  color: var(--text);
  display: block;
  max-width: 100%;
  overflow: hidden;
}
.tool-item:hover {
  border-color: var(--ember);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px var(--ember-soft);
  background: var(--ember-soft);
}
.tool-icon {
  font-size: 2.75rem;
  margin-bottom: var(--space-4);
  display: inline-block;
  animation: iconBounce 2.4s ease-in-out infinite;
}
@keyframes iconBounce {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}
.tool-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--ember);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tool-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

/* ============================================================
   18 · BUTTONS
   ============================================================ */
.btn,
.btn-submit,
.btn-challenge,
.whiteboard-btn {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  text-decoration: none;
  touch-action: manipulation;
  user-select: none;
  white-space: nowrap;
  padding: 11px 20px;
  position: relative;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--gradient-flame);
  color: #fff;
  box-shadow: 0 6px 18px var(--ember-glow);
  text-shadow: 0 1px 2px rgba(0,0,0,0.15);
}
.btn-primary:hover {
  box-shadow: 0 10px 28px var(--ember-glow);
  filter: brightness(1.05);
}
.btn-secondary {
  background: var(--card);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover {
  background: var(--ink-2);
  border-color: var(--ember);
  color: var(--ember);
}
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(1.08); }
.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover { filter: brightness(1.08); }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-danger:hover  { filter: brightness(1.08); }

.btn-submit {
  width: 100%;
  padding: 15px 22px;
  background: var(--gradient-flame);
  color: #fff;
  font-size: 1rem;
  letter-spacing: 0.01em;
  box-shadow: 0 8px 22px var(--ember-glow);
  margin-top: var(--space-4);
  text-shadow: 0 1px 2px rgba(0,0,0,0.15);
}
.btn-submit:hover {
  box-shadow: 0 12px 32px var(--ember-glow);
  filter: brightness(1.06);
}
.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

/* ============================================================
   19 · TOASTS
   ============================================================ */
.toast-container,
#toastContainer {
  position: fixed;
  top: var(--space-5);
  right: var(--space-5);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  max-width: calc(100vw - 40px);
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  border-radius: var(--radius-lg);
  padding: 14px 18px;
  min-width: 280px;
  max-width: 360px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.9375rem;
  font-weight: 600;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-left: 4px solid var(--ember);
  box-shadow: var(--shadow-lg);
  animation: toastIn var(--transition) both;
}
@keyframes toastIn {
  from { opacity: 0; transform: translateX(24px) scale(0.96); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}
.toast > span:first-child { font-size: 1.15rem; flex-shrink: 0; }
.toast > div { flex: 1; min-width: 0; }
.toast > div > div:first-child { font-weight: 600; line-height: 1.35; }
.toast > div > div:last-child {
  font-size: 0.6875rem;
  color: var(--text-muted);
  margin-top: 3px;
  font-family: var(--font-mono);
  font-weight: 500;
}
.toast.success { border-left-color: var(--success); }
.toast.error   { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }
.toast.info    { border-left-color: var(--info); }

/* ============================================================
   20 · SYNC STATUS
   ============================================================ */
.sync-status {
  position: fixed;
  top: 96px;
  right: var(--space-5);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 18px;
  font-size: 0.875rem;
  z-index: 999;
  display: none;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-md);
  max-width: 320px;
  font-family: var(--font-mono);
  font-weight: 500;
}
.sync-status.syncing { color: var(--warning); border-left: 4px solid var(--warning); }
.sync-status.success { color: var(--success); border-left: 4px solid var(--success); }
.sync-status.error   { color: var(--danger);  border-left: 4px solid var(--danger);  }
.sync-status.info    { color: var(--info);    border-left: 4px solid var(--info);    }

/* ============================================================
   21 · STREAK CARD
   ============================================================ */
.streak-card {
  background: var(--gradient-flame);
  color: #fff;
  text-align: center;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  border: none !important;
}
.streak-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, rgba(255,255,255,0.10) 0%, rgba(255,255,255,0) 50%, rgba(255,255,255,0.10) 100%);
  animation: shimmer 3s infinite;
}
@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}
.streak-number {
  font-size: 4rem;
  font-weight: 700;
  line-height: 1;
  margin: var(--space-4) 0;
  text-shadow: 0 4px 20px rgba(0,0,0,0.30);
  position: relative;
  z-index: 1;
}
.streak-label {
  font-size: 1.125rem;
  opacity: 0.95;
  margin-bottom: var(--space-5);
  position: relative;
  z-index: 1;
  white-space: nowrap;
  font-family: var(--font-display);
  font-weight: 600;
}
.streak-milestones {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: var(--space-4) 0;
  position: relative;
  z-index: 1;
  flex-wrap: wrap;
}
.milestone {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.30);
}
.milestone.active {
  background: #fff;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.9);
}
.streak-btn {
  background: rgba(255, 255, 255, 0.20);
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.35);
  padding: 15px 28px;
  border-radius: var(--radius);
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  position: relative;
  z-index: 1;
  font-family: var(--font-ui);
}
.streak-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.30);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.30);
}
.streak-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.streak-progress {
  height: 6px;
  background: rgba(255, 255, 255, 0.20);
  border-radius: 3px;
  margin: var(--space-4) 0;
  position: relative;
  z-index: 1;
  overflow: hidden;
}
.streak-progress-fill {
  height: 100%;
  background: #fff;
  border-radius: 3px;
  transition: width 0.5s ease;
}
.streak-share {
  margin-top: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.streak-share-msg {
  font-size: 0.8125rem;
  opacity: 0.9;
  min-height: 18px;
}

/* ============================================================
   22 · DAILY GOAL
   ============================================================ */
.goal-card {
  background: var(--card);
  border: 1px solid var(--border);
}
.goal-text {
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--text);
  font-size: 1rem;
}
.goal-progress {
  height: 14px;
  background: var(--ink-2);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: var(--space-3);
}
.goal-progress-fill {
  height: 100%;
  background: var(--gradient-flame);
  width: 0%;
  transition: width 0.4s ease;
  box-shadow: 0 0 12px var(--ember-glow);
}
.goal-stats {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
  font-family: var(--font-mono);
}
.goal-message {
  font-weight: 600;
  color: var(--success);
  min-height: 20px;
}
.goal-input { margin-top: var(--space-4); }
.goal-input label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 600;
}

/* ============================================================
   23 · MOTIVATION CARD
   ============================================================ */
.motivation-card {
  background: var(--gradient-purple);
  color: #fff;
  position: relative;
  overflow: hidden;
  border: none !important;
}
.motivation-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.10) 0%, rgba(255,255,255,0) 70%);
  pointer-events: none;
}
.motivation-card h2 { color: #fff !important; position: relative; z-index: 1; }
.quote-text {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-style: italic;
  line-height: 1.6;
  margin-bottom: var(--space-4);
  position: relative;
  z-index: 1;
  text-shadow: 0 2px 4px rgba(0,0,0,0.30);
}
.quote-author {
  font-size: 1rem;
  opacity: 0.9;
  position: relative;
  z-index: 1;
  text-shadow: 0 1px 2px rgba(0,0,0,0.30);
}

/* ============================================================
   24 · CLASS CODE DISPLAY
   ============================================================ */
.class-code-display {
  background: var(--card);
  border: 3px dashed var(--ember);
  color: var(--text);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  margin: var(--space-6) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 12px 40px var(--ember-soft), 0 0 0 4px rgba(255, 71, 20, 0.08);
}
.class-code-display h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: var(--space-3);
  color: var(--text);
}
.class-code-display .code {
  font-family: var(--font-mono);
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  margin: var(--space-5) 0;
  background: var(--gradient-flame);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  word-break: break-all;
}
.class-code-display .btn {
  background: var(--card);
  color: var(--text);
  border: 2px solid var(--border);
}
.class-code-display .btn:hover {
  background: var(--gradient-flame);
  color: #fff;
  border-color: transparent;
}
.class-code-display .btn-danger {
  background: var(--card);
  color: var(--danger);
  border-color: var(--danger);
}
.class-code-display .btn-danger:hover {
  background: var(--danger);
  color: #fff;
}

/* ============================================================
   25 · MY CLASSES GRID
   ============================================================ */
.classes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-5);
}
.class-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  max-width: 100%;
}
.class-card:hover {
  border-color: var(--ember);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px var(--ember-soft);
}
.class-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
  gap: var(--space-3);
  min-width: 0;
}
.class-card-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.class-card-code {
  background: var(--ember);
  color: #fff;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  white-space: nowrap;
  flex-shrink: 0;
}
.class-card-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.class-card-stat {
  text-align: center;
  padding: var(--space-4);
  background: var(--ink-2);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.class-card-stat .value {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ember);
  margin-bottom: 4px;
}
.class-card-stat .label {
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}
.class-card-actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.class-card-actions .btn { flex: 1; min-width: 0; }

/* ============================================================
   26 · LEADERBOARD
   ============================================================ */
.leaderboard-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.leaderboard-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}
.leaderboard-stat {
  text-align: center;
  padding: var(--space-4);
  background: var(--ink-2);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.leaderboard-stat .value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ember);
  margin-bottom: 4px;
}
.leaderboard-stat .label {
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}
.leaderboard-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.leaderboard-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--ink-2);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
  max-width: 100%;
  overflow: hidden;
}
.leaderboard-item:hover {
  transform: translateX(4px);
  border-color: var(--ember);
  background: var(--card);
}
.leaderboard-item.you {
  background: var(--gradient-flame);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 8px 24px var(--ember-glow);
}
.leaderboard-item.you .leaderboard-name,
.leaderboard-item.you .leaderboard-score,
.leaderboard-item.you .leaderboard-rank,
.leaderboard-item.you .leaderboard-subtitle { color: #fff; }
.leaderboard-rank {
  font-size: 1.35rem;
  font-weight: 700;
  width: 40px;
  text-align: center;
  color: var(--ember);
  flex-shrink: 0;
}
.leaderboard-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-flame);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 1.05rem;
  flex-shrink: 0;
}
.leaderboard-info { flex: 1; min-width: 0; }
.leaderboard-name {
  font-weight: 700;
  font-size: 1rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.leaderboard-subtitle {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.leaderboard-score {
  font-size: 1.15rem;
  color: var(--ember);
  text-align: right;
  min-width: 80px;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-weight: 700;
}
.leaderboard-stats-row {
  display: flex;
  gap: 6px;
  margin-top: 6px;
  flex-wrap: wrap;
}
.stats-badge {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  font-size: 0.6875rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-weight: 600;
}
.leaderboard-item.you .stats-badge {
  background: rgba(255, 255, 255, 0.20);
  border-color: rgba(255, 255, 255, 0.30);
  color: #fff;
}
.stats-badge.fire   { color: var(--warning); }
.stats-badge.time   { color: var(--info); }
.stats-badge.points { color: var(--success); }
.leaderboard-empty {
  text-align: center;
  padding: var(--space-12) var(--space-5);
  color: var(--text-muted);
}

/* ============================================================
   27 · BADGES
   ============================================================ */
.badges-card .content-body { max-height: none; }
.badges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-4);
}
.badge-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: var(--space-4);
  align-items: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.badge-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 20%, rgba(255,255,255,0.25), transparent 80%);
  opacity: 0;
  transition: opacity var(--transition);
}
.badge-item:hover::after { opacity: 1; }
.badge-item:hover { transform: translateY(-2px); border-color: var(--ember); }
.badge-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: var(--ember-soft);
  color: var(--ember);
  flex-shrink: 0;
}
.badge-title {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
  line-height: 1.2;
}
.badge-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.4;
}
.badge-tag {
  margin-top: 6px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--ember-soft);
  color: var(--ember);
}
.badge-item[data-tone="sunrise"]   { background: linear-gradient(135deg, rgba(251,146,60,0.10), rgba(253,186,116,0.20)); border-color: rgba(251,146,60,0.4); }
.badge-item[data-tone="weekend"]   { background: linear-gradient(135deg, rgba(59,130,246,0.10), rgba(147,197,253,0.20)); border-color: rgba(59,130,246,0.4); }
.badge-item[data-tone="focus"]     { background: linear-gradient(135deg, rgba(16,185,129,0.10), rgba(110,231,183,0.20)); border-color: rgba(16,185,129,0.4); }
.badge-item[data-tone="time"]      { background: linear-gradient(135deg, rgba(234,88,12,0.10), rgba(253,186,116,0.20));  border-color: rgba(234,88,12,0.4); }
.badge-item[data-tone="streak"]    { background: linear-gradient(135deg, rgba(139,92,246,0.10), rgba(216,180,254,0.20)); border-color: rgba(139,92,246,0.4); }
.badge-item[data-tone="tasks"]     { background: linear-gradient(135deg, rgba(244,63,94,0.10), rgba(251,113,133,0.20));  border-color: rgba(244,63,94,0.4); }
.badge-item[data-tone="assign"]    { background: linear-gradient(135deg, rgba(20,184,166,0.10), rgba(125,211,252,0.20)); border-color: rgba(20,184,166,0.4); }
.badge-item[data-tone="consistency"] { background: linear-gradient(135deg, rgba(245,158,11,0.10), rgba(253,230,138,0.20)); border-color: rgba(245,158,11,0.4); }
.badge-item[data-tone="goal"]      { background: linear-gradient(135deg, rgba(14,165,233,0.10), rgba(186,230,253,0.20)); border-color: rgba(14,165,233,0.4); }

/* ============================================================
   28 · STATISTICS
   ============================================================ */
.statistics-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-6);
}
.statistics-header {
  grid-column: span 12;
  background: var(--card);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--border);
  margin-bottom: var(--space-5);
}
.statistics-header h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--text);
}
.statistics-subtitle {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: var(--space-6);
  font-weight: 500;
}
.stats-controls {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border);
}
.stats-overview-cards {
  grid-column: span 12;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}
.stats-overview-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  border: 1px solid var(--border);
  transition: var(--transition);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.stats-overview-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px var(--ember-soft);
  border-color: var(--ember);
}
.stats-overview-icon { font-size: 2rem; margin-bottom: var(--space-3); display: block; }
.stats-overview-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--ember);
  margin-bottom: 6px;
  line-height: 1;
}
.stats-overview-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
  font-weight: 700;
}
.stats-overview-trend {
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-weight: 600;
}
.stats-overview-trend.up      { color: var(--success); }
.stats-overview-trend.down    { color: var(--danger); }
.stats-overview-trend.neutral { color: var(--text-muted); }

.charts-container {
  grid-column: span 12;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}
.chart-card {
  background: var(--card);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.chart-card:hover {
  box-shadow: 0 12px 28px var(--ember-soft);
  border-color: var(--ember);
}
.chart-header { margin-bottom: var(--space-5); }
.chart-header h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.chart-description {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 6px;
  line-height: 1.4;
  font-weight: 500;
}
.chart-wrapper {
  position: relative;
  height: 260px;
  width: 100%;
  flex: 1;
  min-height: 200px;
}
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
}
.legend-color { width: 12px; height: 12px; border-radius: 2px; }

.stats-detailed-container {
  grid-column: span 12;
  background: var(--card);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--border);
  margin-top: var(--space-5);
}
.stats-detailed-container h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-5);
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.stats-detailed-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
}
.stats-detailed-section {
  padding: var(--space-5);
  background: var(--ink-2);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
.stats-detailed-section h4 {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.stats-detailed-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
}
.stats-detailed-row:last-child { border-bottom: none; }
.stats-detailed-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}
.stats-detailed-value {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ember);
}
.performance-metrics {
  grid-column: span 12;
  background: var(--card);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--border);
  margin-top: var(--space-5);
}
.performance-metrics h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-5);
  color: var(--text);
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-5);
}
.metric-card {
  background: var(--ink-2);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  border: 1px solid var(--border);
  text-align: center;
  transition: var(--transition);
}
.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--ember-soft);
  border-color: var(--ember);
}
.metric-icon { font-size: 1.5rem; margin-bottom: var(--space-3); display: block; }
.metric-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--ember);
  margin-bottom: 6px;
  line-height: 1;
}
.metric-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 4px;
  font-weight: 600;
}
.metric-details { font-size: 0.75rem; color: var(--text-faint); font-weight: 500; }

/* ============================================================
   29 · FOOTER
   ============================================================ */
.footer {
  grid-column: span 12;
  text-align: center;
  padding: var(--space-8);
  margin-top: var(--space-10);
  color: var(--text-muted);
  font-size: 0.875rem;
  border-top: 2px dashed var(--border);
}
.footer a { color: var(--ember); }
.footer a:hover { text-decoration: underline; }

/* ============================================================
   30 · LOADING & EMPTY STATES
   ============================================================ */
.loading {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  color: var(--text-muted);
  font-size: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  font-weight: 500;
}
.loading::after {
  content: '';
  width: 36px;
  height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--ember);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}
.empty-state-icon {
  font-size: 3.5rem;
  opacity: 0.6;
  animation: float 6s ease-in-out infinite;
  filter: drop-shadow(0 8px 16px var(--ember-soft));
}
.empty-state-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
}
.empty-state-description {
  font-size: 0.9375rem;
  line-height: 1.6;
  max-width: 420px;
  font-weight: 500;
}

/* ============================================================
   31 · FOCUS MODE / TOOLKIT
   ============================================================ */
.focus-mode-panel { display: none; }
body.focus-mode .focus-mode-panel { display: block; }
.focus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
}
.focus-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}
.focus-card:hover { border-color: var(--ember); box-shadow: 0 12px 28px var(--ember-soft); }
.focus-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--text);
}
.focus-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}
.focus-tree { font-size: 2.8rem; line-height: 1; }
.ritual-list { display: grid; gap: var(--space-3); }
.ritual-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--ink-2);
  cursor: pointer;
  font-weight: 500;
}
.energy-scale { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.energy-scale button { min-width: 44px; }
.focus-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-3);
}
.focus-timer-display {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin: var(--space-3) 0;
  color: var(--ember);
}
.focus-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.focus-lock-banner {
  background: var(--ember-soft);
  border: 1px dashed var(--ember);
  border-radius: var(--radius);
  padding: var(--space-3);
  margin-bottom: var(--space-4);
  font-size: 0.9rem;
  color: var(--text);
}
.brain-dump-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 220px;
  overflow-y: auto;
}
.brain-dump-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: var(--space-3);
  border-radius: var(--radius);
  background: var(--ink-2);
  border: 1px solid var(--border);
  font-size: 0.9rem;
}
.sound-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
.sound-chip {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  background: var(--ink-2);
  transition: var(--transition-fast);
  color: var(--text);
  font-weight: 600;
  font-family: var(--font-ui);
}
.sound-chip.active,
.sound-chip:hover {
  border-color: var(--ember);
  background: var(--ember-soft);
  color: var(--ember-hot);
}
.blocker-list {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.blocker-list span {
  background: var(--ink-2);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-weight: 500;
}

/* ============================================================
   32 · CONFETTI + CELEBRATE
   ============================================================ */
#confettiLayer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2000;
  overflow: hidden;
}
.confetti {
  position: absolute;
  top: -10px;
  width: 10px;
  height: 14px;
  opacity: 0.95;
  border-radius: 2px;
  animation: confettiFall 5.5s linear forwards;
}
.confetti.burst {
  top: 50%;
  left: 50%;
  animation: confettiBurst 1.8s ease-out forwards;
}
.confetti.sparkle { border-radius: 50%; }
@keyframes confettiFall {
  0%   { transform: translateY(0) rotate(0deg); opacity: 1; }
  80%  { transform: translateY(95vh) rotate(620deg); opacity: 1; }
  95%  { transform: translateY(105vh) rotate(700deg); opacity: 1; }
  100% { transform: translateY(105vh) rotate(720deg); opacity: 0; }
}
@keyframes confettiBurst {
  0%   { transform: translate(-50%, -50%) translate(0, 0) rotate(0deg) scale(1); opacity: 1; }
  100% { transform: translate(-50%, -50%) translate(var(--x), var(--y)) rotate(720deg) scale(0.9); opacity: 0; }
}
.celebrate-btn {
  margin-top: var(--space-4);
  width: 100%;
  background: var(--gradient-flame);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 14px 20px;
  font-weight: 700;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  letter-spacing: 0.02em;
  box-shadow: 0 6px 18px var(--ember-glow);
  font-family: var(--font-ui);
}
.celebrate-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px var(--ember-glow);
  filter: brightness(1.05);
}
.celebrate-btn.pulse { animation: celebratePulse 1.6s ease-in-out infinite; }
@keyframes celebratePulse {
  0%, 100% { box-shadow: 0 6px 18px var(--ember-glow); }
  50%      { box-shadow: 0 8px 28px var(--ember-glow), 0 0 40px rgba(255, 71, 20, 0.25); }
}

/* ============================================================
   33 · MEMORY WALL / STICKY NOTES
   ============================================================ */
.memory-whiteboard,
#studentMemoryWhiteboard {
  position: relative;
  width: 100%;
  height: 600px;
  background:
    linear-gradient(45deg, var(--card) 25%, transparent 25%, transparent 75%, var(--card) 75%, var(--card) 100%),
    linear-gradient(45deg, var(--card) 25%, var(--bg) 25%, var(--bg) 75%, var(--card) 75%, var(--card) 100%);
  background-size: 40px 40px;
  background-position: 0 0, 20px 20px;
  border: 2px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin: var(--space-4) 0;
}
.whiteboard-background {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(0,0,0,0.03) 1px, transparent 1px),
    linear-gradient(rgba(0,0,0,0.03) 1px, transparent 1px);
  background-size: 20px 20px;
}
.sticky-notes-container,
#studentStickyNotesContainer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.student-sticky-note,
.sticky-note {
  position: absolute;
  width: 250px;
  min-height: 200px;
  padding: var(--space-4);
  border-radius: 3px;
  box-shadow: 0 4px 12px rgba(60, 42, 15, 0.20), 0 0 0 1px rgba(60, 42, 15, 0.08);
  cursor: move;
  pointer-events: auto;
  transition: box-shadow 0.2s, transform 0.2s;
  overflow: hidden;
  z-index: 2;
  color: #333;
}
.student-sticky-note:hover,
.sticky-note:hover {
  box-shadow: 0 12px 32px rgba(60, 42, 15, 0.28);
  transform: translateY(-2px) rotate(0deg) !important;
}
.student-sticky-note.dragging,
.sticky-note.dragging {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.30);
  transform: scale(1.05) rotate(0deg) !important;
  z-index: 1000 !important;
}
.student-note-content {
  height: 100%;
  display: flex;
  flex-direction: column;
}
.student-note-text {
  flex: 1;
  font-family: 'Comic Sans MS', 'Chalkboard SE', cursive, var(--font-ui);
  font-size: 16px;
  line-height: 1.5;
  overflow-wrap: break-word;
  margin-bottom: var(--space-4);
  max-height: 130px;
  overflow-y: auto;
  color: #333;
}
.student-note-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: rgba(0, 0, 0, 0.7);
  margin-top: auto;
  padding-top: 6px;
  border-top: 1px dashed rgba(0,0,0,0.12);
  font-weight: 600;
}
.student-note-author { font-weight: 700; }
.student-note-date { opacity: 0.7; font-family: var(--font-mono); }
.student-note-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-2);
}
.student-note-likes {
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 700;
  font-family: var(--font-mono);
}
.btn-student-note {
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: background-color 0.2s;
}
.btn-student-note:hover { background-color: rgba(0, 0, 0, 0.08); }
.btn-like { color: #e63946; }
.btn-delete { color: #666; }
.student-welcome-note {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-1deg);
  width: 300px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  padding: var(--space-6);
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.20);
  z-index: 1;
}

/* Force dark text on light sticky notes */
.student-sticky-note .student-note-text,
.student-sticky-note .student-note-meta,
.student-sticky-note .student-note-author,
.student-sticky-note .student-note-date,
.student-sticky-note .student-note-likes { color: #333 !important; }
.student-sticky-note .btn-student-note { color: inherit; }
.student-sticky-note .btn-like { color: #e63946 !important; }

/* Add-memory page */
.sticky-note-preview {
  width: 100%;
  min-height: 140px;
  padding: var(--space-4);
  border-radius: 8px;
  box-shadow: 0 6px 16px rgba(60, 42, 15, 0.16);
  margin-top: var(--space-3);
  color: #333;
}
.preview-content { height: 100%; display: flex; flex-direction: column; }
.preview-text {
  flex: 1;
  font-family: 'Comic Sans MS', 'Chalkboard SE', cursive, var(--font-ui);
  font-size: 14px;
  line-height: 1.55;
  color: #1A1815;
  margin-bottom: 6px;
  font-weight: 500;
}
.preview-meta {
  font-size: 11px;
  color: rgba(0,0,0,0.55);
  margin-top: auto;
  font-weight: 600;
}
.preview-author { font-weight: 700; }

.color-picker {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-3);
  flex-wrap: wrap;
}
.color-option {
  position: relative;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  cursor: pointer;
  border: 3px solid transparent;
  transition: all var(--transition-fast);
}
.color-option:hover { transform: scale(1.10); }
.color-option.selected {
  border-color: var(--ember);
  transform: scale(1.10);
  box-shadow: 0 0 0 3px var(--card), 0 0 0 6px var(--ember);
}
.whiteboard-controls {
  position: absolute;
  bottom: var(--space-4);
  right: var(--space-4);
  display: flex;
  gap: 8px;
  z-index: 10;
}
.whiteboard-btn {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 16px;
  font-size: 0.875rem;
  box-shadow: var(--shadow-sm);
}
.whiteboard-btn:hover {
  background: var(--ember);
  color: #fff;
  border-color: var(--ember);
}

/* ============================================================
   34 · JOIN WHITEBOARD
   ============================================================ */
.join-wb {
  background: var(--card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  margin: var(--space-6) 0;
  overflow: hidden;
}
.join-wb-header {
  padding: var(--space-6);
  background: var(--gradient-flame);
  color: #fff;
  text-align: center;
}
.join-wb-header h3 {
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.join-wb-input {
  font-size: 2rem;
  text-align: center;
  letter-spacing: 0.6em;
  font-family: var(--font-mono);
  font-weight: 700;
  padding: 15px;
  width: 260px;
  max-width: 100%;
  margin: 20px auto;
  display: block;
  border: 2px solid rgba(255,255,255,0.35);
  border-radius: 12px;
  background: rgba(255,255,255,0.15);
  color: #fff;
  text-transform: uppercase;
}
.join-wb-input::placeholder { color: rgba(255,255,255,0.55); }
.join-wb-input:focus {
  outline: none;
  border-color: #fff;
  background: rgba(255,255,255,0.22);
}
.active-wb-session { display: none; }
.active-wb-session.show { display: block; }
.wb-session-status {
  padding: var(--space-4);
  background: var(--ember-soft);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-weight: 600;
}
.wb-drawing-area {
  min-height: 500px;
  overflow: auto;
  background: #fff;
}
#studentWbCanvas {
  display: block;
  background: #fff;
  width: 100%;
  height: auto;
  cursor: crosshair;
  touch-action: none;
}
.student-wb-tools {
  padding: var(--space-4);
  background: var(--ink-2);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  justify-content: center;
  align-items: center;
}
.student-wb-tool {
  padding: 8px 16px;
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  font-family: var(--font-ui);
}
.student-wb-tool.active {
  background: var(--ember);
  color: #fff;
  border-color: var(--ember);
}
.student-wb-color {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  border: 3px solid transparent;
  transition: all var(--transition-fast);
}
.student-wb-color:hover { transform: scale(1.10); }
.student-wb-color.active {
  border-color: var(--ember);
  transform: scale(1.15);
  box-shadow: 0 0 14px var(--ember-glow);
}
#studentWbPenSize {
  padding: 8px 12px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  width: auto;
}

/* ============================================================
   35 · STUDENT CLASSROOM ENHANCEMENTS
   ============================================================ */
.student-classroom-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  margin-bottom: var(--space-4);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.student-classroom-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-flame);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.student-classroom-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px var(--ember-soft);
  border-color: var(--ember);
}
.student-classroom-card:hover::before { opacity: 1; }
.student-classroom-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
  gap: 10px;
}
.student-classroom-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.student-classroom-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--ink-2);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-weight: 600;
}
.student-classroom-content {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: var(--space-4);
}
.student-classroom-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  flex-wrap: wrap;
}
.student-preview-btn {
  background: var(--gradient-flame);
  color: #fff;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 12px var(--ember-glow);
  font-family: var(--font-ui);
}
.student-preview-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--ember-glow);
  filter: brightness(1.05);
}

/* Resource popup modal */
.student-popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(60, 42, 15, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
  padding: var(--space-4);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.student-popup {
  background: var(--card);
  border-radius: var(--radius-2xl);
  width: 100%;
  max-width: 600px;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  border: 1px solid var(--border);
  animation: slideUp 0.3s cubic-bezier(0.34, 1.2, 0.64, 1);
}
.student-popup-header {
  background: var(--gradient-flame);
  padding: var(--space-5) var(--space-6);
  color: #fff;
  position: relative;
}
.student-popup-header h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.3rem;
  padding-right: 40px;
  color: #fff;
  font-weight: 700;
}
.student-popup-close {
  position: absolute;
  top: 14px;
  right: 18px;
  background: rgba(255, 255, 255, 0.20);
  border: none;
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.student-popup-close:hover {
  background: rgba(255, 255, 255, 0.35);
  transform: scale(1.10);
}
.student-popup-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-6);
}
.file-preview-container {
  background: var(--ink-2);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  margin: var(--space-4) 0;
  text-align: center;
}
.file-preview-container img {
  max-width: 100%;
  max-height: 320px;
  border-radius: 12px;
}
.file-preview-container iframe {
  width: 100%;
  height: 420px;
  border: none;
  border-radius: 12px;
}
.download-btn {
  background: var(--gradient-flame);
  color: #fff;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  margin-top: var(--space-4);
  transition: all var(--transition-fast);
  box-shadow: 0 4px 12px var(--ember-glow);
  font-family: var(--font-ui);
}
.download-btn:hover { transform: translateY(-2px); filter: brightness(1.05); }
.link-btn {
  background: var(--gradient-flame);
  color: #fff;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  margin-top: var(--space-4);
  transition: all var(--transition-fast);
  box-shadow: 0 4px 12px var(--ember-glow);
  font-family: var(--font-ui);
}
.link-btn:hover { transform: translateY(-2px); filter: brightness(1.05); }

/* ============================================================
   36 · BOTTOM FEATURES (dashboard widget row)
   ============================================================ */
.bottom-features {
  margin-top: var(--space-10);
  border-top: 2px dashed var(--border);
  padding-top: var(--space-8);
}
.bottom-features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}
.bottom-feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  transition: all var(--transition-fast);
}
.bottom-feature-card:hover {
  border-color: var(--ember);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px var(--ember-soft);
}
.bottom-feature-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border);
}
.bottom-feature-header i { color: var(--ember); font-size: 1rem; }
.bottom-feature-header span {
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.bottom-feature-content { font-size: 0.8125rem; }
.quick-notes-bottom { display: flex; flex-direction: column; gap: 8px; }
.quick-notes-bottom textarea {
  width: 100%;
  height: 90px;
  padding: 10px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--ink-2);
  color: var(--text);
  font-size: 0.8125rem;
  resize: vertical;
  font-family: var(--font-ui);
}
.quick-notes-bottom .notes-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}
.notes-actions button { padding: 5px 14px; font-size: 0.75rem; }
.stats-compare-bottom { display: flex; flex-direction: column; gap: 8px; }
.stat-compare-item {
  background: var(--ink-2);
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}
.stat-compare-item i { color: var(--success); font-size: 0.75rem; }
.teach-bottom { display: flex; flex-direction: column; gap: 10px; }
.teach-bottom input {
  padding: 8px 10px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--ink-2);
  color: var(--text);
  font-size: 0.75rem;
}
.teach-bullets-bottom { display: flex; flex-direction: column; gap: 6px; }
.teach-bullet-row { display: flex; align-items: center; gap: 8px; }
.teach-bullet-check {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--ink-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
  color: transparent;
}
.teach-bullet-check.filled {
  background: var(--ember);
  color: #fff;
  border-color: var(--ember);
}
.teach-bullet-input {
  flex: 1;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--ink-2);
  color: var(--text);
  font-size: 0.7rem;
}
.teach-bullet-input:focus { outline: none; border-color: var(--ember); }
.teach-bottom .teach-actions {
  display: flex;
  gap: 8px;
  justify-content: space-between;
  margin-top: 4px;
}
.teach-actions button { padding: 6px 12px; font-size: 0.7rem; flex: 1; }
.challenge-bottom { display: flex; flex-direction: column; gap: 12px; }
.challenge-text {
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--ember-soft);
  padding: 12px;
  border-radius: var(--radius);
  text-align: center;
  color: var(--ember-hot);
}
.challenge-bottom button { width: 100%; padding: 10px; font-size: 0.75rem; }
.challenge-tip {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-align: center;
  font-weight: 500;
}

/* ============================================================
   37 · MODALS (referral / rainbow / forest / story)
   ============================================================ */
.referral-modal,
.rainbow-modal,
.forest-modal,
.story-modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1600;
  padding: var(--space-4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background: rgba(60, 42, 15, 0.55);
  overflow-y: auto;
}
.referral-modal.show,
.rainbow-modal.show,
.forest-modal.show,
.story-modal.show { display: flex; }
.referral-modal-card,
.story-modal-content {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-2xl);
  padding: var(--space-8);
  text-align: center;
  animation: modalIn var(--transition) both;
}
.rainbow-modal-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(15, 18, 35, 0.95));
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-2xl);
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-2xl);
  padding: var(--space-8);
  text-align: center;
  color: #fff;
}
.forest-modal-card {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.18), rgba(4, 54, 35, 0.95));
  border: 1px solid rgba(16, 185, 129, 0.4);
  border-radius: var(--radius-2xl);
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-2xl);
  padding: var(--space-8);
  text-align: center;
  color: #ecfdf5;
}
.referral-modal-title,
.story-modal-header h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--text);
}
.rainbow-modal-card .referral-modal-title,
.forest-modal-card .referral-modal-title { color: #fff; }
.referral-modal-text {
  color: var(--text-muted);
  margin-bottom: var(--space-5);
  font-size: 0.9375rem;
  line-height: 1.6;
}
.referral-modal-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-4);
}
.story-modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border);
  background: var(--gradient-flame);
  color: #fff;
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}
.story-modal-header h2 { color: #fff; margin: 0; }
.story-modal-body { padding: var(--space-6); text-align: left; }
.story-modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: rgba(255, 255, 255, 0.20);
  border: none;
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  z-index: 1002;
}
.story-modal-close:hover { background: rgba(255, 255, 255, 0.35); }
.story-modal-content {
  padding: 0;
  position: relative;
  max-height: 88vh;
  overflow-y: auto;
  text-align: left;
  border: 2px solid var(--ember);
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(-10px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ============================================================
   38 · CHATBOT + FEEDBACK
   ============================================================ */
.chatbot-fab {
  position: fixed;
  right: 18px;
  bottom: 96px;
  z-index: 900;
  display: flex;
  align-items: flex-end;
  gap: 10px;
  flex-direction: column;
}
.chatbot-bubble {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 10px 14px;
  max-width: 260px;
  font-size: 0.9rem;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition);
  pointer-events: none;
  position: absolute;
  right: 0;
  bottom: calc(100% + 12px);
  box-shadow: var(--shadow-md);
  font-weight: 500;
}
.chatbot-bubble.show { opacity: 1; transform: translateY(0); }
.chatbot-bubble.challenge {
  background: var(--ember-soft);
  border-color: var(--ember);
  color: var(--ember-hot);
  font-weight: 700;
}
.chatbot-btn {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: transform var(--transition);
  animation: botFloat 3s ease-in-out infinite;
}
.chatbot-btn:hover { transform: translateY(-6px) scale(1.02); }
.chatbot-img {
  width: 110px;
  height: 110px;
  object-fit: contain;
  animation: botLook 5.5s ease-in-out infinite, botNod 4.2s ease-in-out infinite;
}
@keyframes botFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}
@keyframes botLook {
  0%   { transform: translate(0, 0) rotate(0deg); }
  20%  { transform: translate(-3px, -1px) rotate(-1deg); }
  40%  { transform: translate(3px, -2px) rotate(1deg); }
  60%  { transform: translate(2px, 2px) rotate(0.5deg); }
  80%  { transform: translate(-2px, 1px) rotate(-0.5deg); }
  100% { transform: translate(0, 0) rotate(0deg); }
}
@keyframes botNod {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(2px); }
}
.feedback-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--gradient-flame);
  color: #fff;
  border: none;
  border-radius: var(--radius-pill);
  padding: 14px 24px;
  font-weight: 700;
  font-size: 0.9375rem;
  cursor: pointer;
  box-shadow: 0 10px 28px var(--ember-glow);
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
  font-family: var(--font-ui);
}
.feedback-btn:hover { transform: translateY(-3px); box-shadow: 0 14px 36px var(--ember-glow); }

/* Clap overlay */
.clap-overlay {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2400;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.clap-overlay.show { opacity: 1; }
.clap-video { display: none; }
.clap-canvas {
  width: 50vw;
  height: 50vh;
  object-fit: contain;
  background: transparent;
  opacity: 0.65;
}

/* ============================================================
   39 · SCROLLBAR & ACCESSIBILITY
   ============================================================ */
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--ink-4);
  border-radius: 6px;
  border: 3px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--ember);
  background-clip: padding-box;
  border: 3px solid transparent;
}
:focus-visible {
  outline: 3px solid var(--ember);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (hover: none) and (pointer: coarse) {
  .btn:hover, .btn-submit:hover, .nav-item:hover,
  .student-item:hover, .item:hover, .stat-card:hover,
  .content-card:hover, .form-card:hover, .assignment-card:hover,
  .challenge-card:hover, .memory-card:hover,
  .student-classroom-card:hover, .class-card:hover,
  .tool-item:hover, .bottom-feature-card:hover { transform: none !important; }
  .btn:active, .btn-submit:active, .nav-item:active { transform: scale(0.98); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .student-emoji, .empty-state-icon, .chatbot-btn, .chatbot-img { animation: none; }
}

/* ============================================================
   40 · RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
  .bottom-features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 1020px) {
  .sidebar {
    transform: translateX(-100%);
    opacity: 0;
    visibility: hidden;
    box-shadow: var(--shadow-xl);
  }
  .sidebar.active {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }
  .main-content {
    margin-left: 0;
    padding-top: 96px;
    padding-left: var(--space-5);
    padding-right: var(--space-5);
  }
  .top-nav { display: block; }
  .mobile-menu-toggle { display: flex; }
  .quick-stats { grid-template-columns: repeat(2, 1fr); }
  body::after { left: 28px; }
  :root { --paper-margin-x: 28px; }
}
@media (max-width: 768px) {
  html { font-size: 15px; }
  input, textarea, select, button { font-size: 16px !important; }
  .btn, .nav-item, .btn-submit, .mobile-menu-toggle,
  .sidebar-toggle, .modal-close, .student-preview-btn { min-height: 44px; }

  :root {
    --card-pad: var(--space-5);
    --section-gap: var(--space-6);
    --element-gap: var(--space-4);
    --paper-ruling: 28px;
    --paper-margin-x: 20px;
  }
  .quick-stats { grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
  .dashboard-header { margin-top: var(--space-2); text-align: center; }
  .dashboard-header h1 { font-size: 1.75rem; }
  .dashboard-subtitle { font-size: 1rem; text-align: center; }
  .controls-bar { display: none; }
  .content-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-5);
  }
  .content-header h2 { font-size: 1.2rem; }
  .content-body { padding: var(--space-5); max-height: 420px; }
  .forms-section, .content-section { grid-column: span 12; }
  .stat-card { flex-direction: row; text-align: left; gap: var(--space-4); min-height: 100px; }
  .stat-number { font-size: 1.75rem; }
  .stat-icon { width: 48px; height: 48px; font-size: 1.35rem; }
  .classes-grid { grid-template-columns: 1fr; }
  .leaderboard-stats { grid-template-columns: repeat(2, 1fr); }
  .leaderboard-item { flex-direction: column; align-items: flex-start; }
  .leaderboard-score { align-self: flex-end; margin-top: 6px; }
  .class-code-display { padding: var(--space-6); }
  .class-code-display .code { font-size: 2rem; letter-spacing: 0.2em; }
  .class-card-stats { grid-template-columns: repeat(2, 1fr); }
  .modal-content,
  .student-popup { border-radius: var(--radius-xl); }
  .memory-whiteboard,
  #studentMemoryWhiteboard { height: 420px; }
  .student-sticky-note,
  .sticky-note { width: 180px; min-height: 160px; padding: var(--space-3); }
  .student-note-text { font-size: 13px; }
  .bottom-features-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: 1fr; }
  .wb-session-code { font-size: 1.25rem; letter-spacing: 0.18em; }
  .student-wb-tool { padding: 6px 12px; font-size: 0.8125rem; }
  .join-wb-input { font-size: 1.4rem; letter-spacing: 0.4em; width: 220px; }
  #toastContainer, .toast-container {
    top: 10px;
    right: 10px;
    left: 10px;
    align-items: stretch;
    max-width: none;
  }
  .toast { max-width: 100%; min-width: auto; padding: 14px 16px; }
  .sync-status { top: 76px; left: 10px; right: 10px; max-width: none; }
  .feedback-btn { bottom: 24px; right: 14px; padding: 12px 18px; font-size: 0.875rem; }
  .chatbot-fab { right: 12px; bottom: 130px; }
  .chatbot-btn, .chatbot-img { width: 90px; height: 90px; }
  .chatbot-bubble { max-width: 220px; font-size: 0.85rem; }
  .focus-metrics { grid-template-columns: 1fr 1fr; }
  .streak-number { font-size: 3rem; }
  .goal-stats { font-size: 0.85rem; }
  .student-popup-body { padding: var(--space-5); }
  .file-preview-container iframe { height: 300px; }
  .persona-header,
  .persona-stats { grid-template-columns: 1fr; }
  .pulse-widget { padding: var(--space-6); gap: var(--space-6); }
}
@media (max-width: 480px) {
  .quick-stats { grid-template-columns: 1fr; }
  .stat-card { flex-direction: column; text-align: center; }
  .stat-number { font-size: 1.5rem; }
  .leaderboard-stats { grid-template-columns: 1fr; }
  .class-code-display .code { font-size: 1.5rem; letter-spacing: 0.14em; }
  .dashboard-header h1 { font-size: 1.5rem; }
  .content-header h2 { font-size: 1.05rem; }
  .content-body { padding: var(--space-4); }
  .focus-timer-display { font-size: 2rem; }
  .streak-number { font-size: 2.5rem; }
  .tools-grid { gap: var(--space-3); }
  .tool-item { padding: var(--space-5); }
  .tool-icon { font-size: 2rem; }
  .tool-name { font-size: 1rem; }
  .student-popup-body { padding: var(--space-4); }
  .btn, .btn-submit { padding: 12px 16px; font-size: 0.875rem; }
  .btn-submit { padding: 15px 20px; font-size: 0.9375rem; }
  .mobile-nav-controls .btn { font-size: 10px; padding: 5px 4px; height: 32px; }
  .mobile-menu-toggle { width: 34px; height: 34px; font-size: 1rem; }
  .top-nav-header h2 { font-size: 0.875rem; max-width: 100px; }
  .main-content { margin-top: 58px; }
}
@media (max-width: 359px) {
  html { font-size: 14px; }
  .class-code-display .code { font-size: 1.25rem; letter-spacing: 0.10em; }
  .mobile-nav-controls .btn span { display: none; }
  .mobile-nav-controls .btn::before { font-size: 13px; }
  .mobile-nav-controls .btn:nth-child(1)::before { content: '🏠'; }
  .mobile-nav-controls .btn:nth-child(2)::before { content: '🎓'; }
  .mobile-nav-controls .btn:nth-child(3)::before { content: '🔄'; }
  .mobile-nav-controls .btn:nth-child(4)::before { content: '📤'; }
}
@media (max-height: 600px) and (orientation: landscape) {
  .top-nav { min-height: 52px; padding: 4px 12px; }
  .main-content { padding-top: 66px; }
  .sidebar { padding-top: var(--space-5); }
}
@media print {
  .sidebar, .top-nav, .sidebar-toggle, .controls-bar,
  .btn, .mobile-menu-toggle, .modal, .toast-container,
  .sync-status, .feedback-btn, .chatbot-fab,
  .mobile-nav-controls, .tour-overlay, .tour-tooltip,
  .tour-arrow, .tour-sparkle { display: none !important; }
  .main-content { margin-left: 0; padding: 0; }
  .content-body { max-height: none; overflow: visible; }
  body { background: #fff; color: #000; }
  body::before, body::after { display: none; }
  .task-item, .assignment-item, .classroom-item { break-inside: avoid; }
  .chart-wrapper { height: 220px !important; }
}

/* Safe areas */
@supports (padding: max(0px)) {
  .top-nav { padding-left: max(var(--space-4), env(safe-area-inset-left)); padding-right: max(var(--space-4), env(safe-area-inset-right)); }
  .main-content {
    padding-left: max(var(--space-8), env(safe-area-inset-left));
    padding-right: max(var(--space-8), env(safe-area-inset-right));
    padding-bottom: max(var(--space-16), env(safe-area-inset-bottom));
  }
  @media (max-width: 768px) {
    .main-content {
      padding-left: max(var(--space-5), env(safe-area-inset-left));
      padding-right: max(var(--space-5), env(safe-area-inset-right));
    }
  }
}



/* ---------- 1 · JOIN WHITEBOARD · modal overlay ---------- */
/* Kept display:flex ALWAYS — visibility controlled by opacity / pointer-events
   so the inline style.display="block" from the feature script never fights us. */
#joinWbContainer {
  display: flex !important;
  position: fixed !important;
  inset: 0 !important;
  z-index: 9999 !important;
  background: rgba(60, 42, 15, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, visibility 0.2s ease;
  margin: 0 !important;
  border: none !important;
  border-radius: 0 !important;
  overflow: visible !important;
}
#joinWbContainer.wb-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
#joinWbContainer .join-wb-header {
  border-radius: var(--radius-xl, 26px);
  width: 100%;
  max-width: 460px;
  padding: 40px 32px 32px;
  position: relative;
  box-shadow: 0 40px 90px rgba(60, 42, 15, 0.30);
  transform: translateY(12px) scale(0.98);
  transition: transform 0.24s cubic-bezier(0.34, 1.2, 0.64, 1);
}
#joinWbContainer.wb-visible .join-wb-header {
  transform: translateY(0) scale(1);
}
.wb-close-btn {
  position: absolute;
  top: 12px;
  right: 14px;
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
  border: none;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  transition: background 0.15s ease;
  font-family: inherit;
}
.wb-close-btn:hover { background: rgba(255, 255, 255, 0.38); }

/* Active drawing session — feature script sets style.display="block" inline.
   We detect that via attribute selector so it goes full-screen automatically. */
#activeWbSession[style*="display: block"],
#activeWbSession[style*="display:block"],
#activeWbSession.show {
  display: block !important;
  position: fixed !important;
  inset: 0 !important;
  z-index: 9999 !important;
  background: var(--bg, #fef9e8);
  overflow-y: auto;
  padding: 24px;
  padding-top: 80px;
}
#activeWbSession .wb-session-status {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10000;
  border-radius: 0;
  box-shadow: 0 4px 20px rgba(60, 42, 15, 0.12);
}

/* ---------- 2 · SIDEBAR NAV · bigger rectangles ---------- */
.sidebar .sidebar-nav {
  gap: 8px !important;
}
.sidebar .sidebar-nav .nav-item,
.sidebar .sidebar-nav .sidebar-btn {
  padding: 14px 18px !important;
  border-radius: 10px !important;
  font-size: 1rem !important;
  font-weight: 600 !important;
  min-height: 48px;
  line-height: 1.2;
  letter-spacing: 0.005em;
}
.sidebar .sidebar-nav .nav-item:hover {
  transform: translateX(4px) !important;
  box-shadow: 0 4px 12px rgba(60, 42, 15, 0.06);
}
.sidebar .sidebar-nav .nav-item.active {
  box-shadow: 0 8px 22px var(--ember-glow, rgba(255,71,20,0.38)) !important;
}

/* ---------- 3 · ENGAGEMENT HEATMAP · every theme ---------- */
body.dark {
  --heat-0: rgba(255, 255, 255, 0.06);
  --heat-1: rgba(255, 87, 34, 0.28);
  --heat-2: rgba(255, 87, 34, 0.50);
  --heat-3: rgba(255, 87, 34, 0.72);
  --heat-4: rgba(255, 87, 34, 0.95);
}
body.ocean {
  --heat-0: rgba(2, 132, 199, 0.08);
  --heat-1: rgba(2, 132, 199, 0.28);
  --heat-2: rgba(2, 132, 199, 0.50);
  --heat-3: rgba(2, 132, 199, 0.72);
  --heat-4: rgba(2, 132, 199, 0.95);
}
body.forest {
  --heat-0: rgba(5, 150, 105, 0.08);
  --heat-1: rgba(5, 150, 105, 0.28);
  --heat-2: rgba(5, 150, 105, 0.50);
  --heat-3: rgba(5, 150, 105, 0.72);
  --heat-4: rgba(5, 150, 105, 0.95);
}
body.sunset {
  --heat-0: rgba(234, 88, 12, 0.08);
  --heat-1: rgba(234, 88, 12, 0.28);
  --heat-2: rgba(234, 88, 12, 0.50);
  --heat-3: rgba(234, 88, 12, 0.72);
  --heat-4: rgba(234, 88, 12, 0.95);
}
body.purple {
  --heat-0: rgba(179, 136, 255, 0.08);
  --heat-1: rgba(179, 136, 255, 0.28);
  --heat-2: rgba(179, 136, 255, 0.50);
  --heat-3: rgba(179, 136, 255, 0.72);
  --heat-4: rgba(179, 136, 255, 0.95);
}
body.rainbow {
  --heat-0: rgba(255, 122, 217, 0.08);
  --heat-1: rgba(255, 122, 217, 0.30);
  --heat-2: rgba(168, 85, 247, 0.55);
  --heat-3: rgba(59, 130, 246, 0.75);
  --heat-4: rgba(34, 197, 94, 0.95);
}
body.premium {
  --heat-0: rgba(64, 201, 255, 0.08);
  --heat-1: rgba(64, 201, 255, 0.30);
  --heat-2: rgba(64, 201, 255, 0.55);
  --heat-3: rgba(108, 92, 231, 0.75);
  --heat-4: rgba(192, 132, 252, 0.95);
}
.aggregate-heatmap-cell {
  background: var(--heat-0);
  min-height: 26px;
  border: 1px solid var(--border);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.aggregate-heatmap-cell.level-0 { background: var(--heat-0); }
.aggregate-heatmap-cell.level-1 { background: var(--heat-1); }
.aggregate-heatmap-cell.level-2 { background: var(--heat-2); }
.aggregate-heatmap-cell.level-3 { background: var(--heat-3); }
.aggregate-heatmap-cell.level-4 { background: var(--heat-4); }
.aggregate-heatmap-cell:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px var(--ember-soft, rgba(255,71,20,0.12));
}
.heatmap-cell.level-0, .calendar-day.level-0 { background: var(--heat-0); }
.heatmap-cell.level-1, .calendar-day.level-1 { background: var(--heat-1); }
.heatmap-cell.level-2, .calendar-day.level-2 { background: var(--heat-2); }
.heatmap-cell.level-3, .calendar-day.level-3 { background: var(--heat-3); }
.heatmap-cell.level-4, .calendar-day.level-4 { background: var(--heat-4); }

/* ---------- 4 · CLASSROOM SECTIONS · spacing ---------- */
#inClassView > * + * {
  margin-top: var(--space-10, 72px) !important;
}
#inClassView .content-card {
  margin-bottom: 0 !important;
}
#inClassView .content-card + .content-card,
#inClassView .content-card + .pro-tip,
#inClassView .pro-tip + .content-card {
  margin-top: var(--space-10, 72px) !important;
}
#classroom.dashboard-content > * + * {
  margin-top: var(--space-8, 56px);
}
#teacherAnnouncements > * + *,
#teacherResources > * + *,
#teacherPolls > * + * {
  margin-top: var(--space-5, 32px) !important;
}

@media (max-width: 768px) {
  #inClassView > * + *,
  #inClassView .content-card + .content-card,
  #inClassView .content-card + .pro-tip,
  #inClassView .pro-tip + .content-card {
    margin-top: var(--space-6, 40px) !important;
  }
  #classroom.dashboard-content > * + * {
    margin-top: var(--space-5, 32px);
  }
  #activeWbSession[style*="display: block"],
  #activeWbSession[style*="display:block"],
  #activeWbSession.show { padding: 16px; padding-top: 72px; }
}



/* ============================================================
   MOBILE LAYOUT · ≤900px
   ============================================================ */
@media (max-width: 900px) {

  /* ---------- TOP NAV · hamburger + title only ---------- */
  .top-nav {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    height: 56px !important;
    min-height: 56px !important;
    padding: 0 12px !important;
    background: var(--card) !important;
    border-bottom: 1px solid var(--border) !important;
    box-shadow: 0 2px 12px rgba(60, 42, 15, 0.06) !important;
    z-index: 1000 !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
  }
  .top-nav-header {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    width: 100% !important;
    height: 56px !important;
    padding: 0 !important;
    gap: 12px !important;
  }
  .top-nav-header h2 {
    flex: 1 !important;
    font-size: 1rem !important;
    font-weight: 700 !important;
    text-align: left !important;
    max-width: none !important;
    margin: 0 !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
    padding-left: 8px !important;
  }

  /* Kill the cramped row of buttons that was here */
  .mobile-nav-controls {
    display: none !important;
  }

  .mobile-menu-toggle {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 42px !important;
    height: 42px !important;
    min-height: 42px !important;
    font-size: 1.15rem !important;
    border-radius: 10px !important;
    background: var(--gradient-flame) !important;
    color: #fff !important;
    box-shadow: 0 4px 12px var(--ember-glow) !important;
    border: none !important;
    flex-shrink: 0 !important;
    cursor: pointer !important;
  }

  /* ---------- SIDEBAR · slide-out drawer ---------- */
  .sidebar {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 84vw !important;
    max-width: 320px !important;
    height: 100vh !important;
    transform: translateX(-105%) !important;
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1) !important;
    z-index: 1050 !important;
    padding: 20px 16px 100px !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch !important;
    border-right: 1px solid var(--border) !important;
    box-shadow: 4px 0 30px rgba(60, 42, 15, 0.18) !important;
    opacity: 1 !important;
    visibility: visible !important;
  }
  .sidebar.active {
    transform: translateX(0) !important;
  }

  .mobile-overlay {
    display: none;
    position: fixed !important;
    inset: 0 !important;
    background: rgba(60, 42, 15, 0.5) !important;
    backdrop-filter: blur(4px) !important;
    -webkit-backdrop-filter: blur(4px) !important;
    z-index: 1040 !important;
  }
  .mobile-overlay.active {
    display: block !important;
  }

  /* Sidebar internals · tighter on phone */
  .sidebar .sidebar-header {
    margin-bottom: 16px !important;
    padding-bottom: 16px !important;
  }
  .sidebar .student-emoji {
    font-size: 2.2rem !important;
    margin-bottom: 4px !important;
  }
  .sidebar h2 {
    font-size: 1.15rem !important;
  }
  .sidebar .sidebar-subtitle {
    font-size: 0.75rem !important;
  }
  .sidebar .class-switcher {
    padding: 12px !important;
    margin-bottom: 14px !important;
  }
  .sidebar .sidebar-nav {
    gap: 6px !important;
    max-height: none !important;
  }
  .sidebar .sidebar-nav .nav-item,
  .sidebar .sidebar-nav .sidebar-btn {
    padding: 12px 14px !important;
    font-size: 0.9rem !important;
    min-height: 44px !important;
  }
  .sidebar .sidebar-stats,
  .sidebar .stories-section,
  .sidebar .heatmap-section {
    padding: 14px !important;
  }
  .sidebar .sidebar-stats h3,
  .sidebar .stories-section h3,
  .sidebar .heatmap-section h3 {
    font-size: 0.65rem !important;
    margin-bottom: 8px !important;
  }

  /* ---------- MAIN CONTENT ---------- */
  .app-layout {
    display: block !important;
  }
  .main-content {
    margin-left: 0 !important;
    margin-top: 56px !important;
    padding: 16px 14px 96px !important;
    max-width: 100% !important;
    width: 100% !important;
    overflow-x: hidden !important;
  }
  .main-content > * {
    max-width: 100% !important;
  }

  /* ---------- DASHBOARD HEADER ---------- */
  .dashboard-header {
    margin-bottom: 18px !important;
    text-align: left !important;
  }
  .dashboard-header h1 {
    font-size: 1.45rem !important;
    line-height: 1.2 !important;
    margin-bottom: 6px !important;
    text-align: left !important;
  }
  .time-greeting {
    font-size: 0.8rem !important;
    margin-bottom: 4px !important;
  }
  .dashboard-subtitle {
    font-size: 0.825rem !important;
    margin-bottom: 12px !important;
    text-align: left !important;
  }
  .controls-bar {
    display: none !important;
  }

  /* ---------- QUICK STATS · 2 columns ---------- */
  .quick-stats {
    display: grid !important;
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    gap: 10px !important;
    margin-bottom: 18px !important;
  }
  .stat-card {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    padding: 12px 12px !important;
    gap: 10px !important;
    min-height: auto !important;
    height: auto !important;
    text-align: left !important;
    border-radius: 14px !important;
    overflow: hidden !important;
  }
  .stat-card:hover {
    transform: none !important;
  }
  .stat-icon {
    width: 38px !important;
    height: 38px !important;
    font-size: 1.1rem !important;
    flex-shrink: 0 !important;
  }
  .stat-content {
    min-width: 0 !important;
    flex: 1 !important;
  }
  .stat-number {
    font-size: 1.25rem !important;
    font-weight: 700 !important;
    margin-bottom: 2px !important;
    line-height: 1 !important;
  }
  .stat-label {
    font-size: 0.625rem !important;
    letter-spacing: 0.06em !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
  }

  /* ---------- CARDS ---------- */
  .content-card,
  .form-card,
  .assignment-card,
  .content-section > *,
  .forms-section > * {
    border-radius: 16px !important;
    margin-bottom: 14px !important;
    max-width: 100% !important;
  }
  .content-card {
    padding: 0 !important;
  }
  .form-card {
    padding: 16px 16px !important;
  }
  .content-header {
    padding: 14px 16px !important;
    flex-direction: row !important;
    align-items: center !important;
    flex-wrap: wrap !important;
    gap: 10px !important;
  }
  .content-header h2,
  .form-card h2 {
    font-size: 1.05rem !important;
    font-weight: 700 !important;
    white-space: normal !important;
    overflow: visible !important;
    text-overflow: unset !important;
    line-height: 1.25 !important;
  }
  .content-header h2::before,
  .form-card h2::before {
    width: 5px !important;
    height: 5px !important;
  }
  .content-body {
    padding: 14px 16px !important;
    max-height: none !important;
    overflow: visible !important;
  }

  /* ---------- PRO TIPS ---------- */
  .pro-tip {
    padding: 14px 16px 14px 16px !important;
    margin: 12px 0 !important;
    font-size: 0.825rem !important;
    transform: none !important;
    border-radius: 12px !important;
    line-height: 1.5 !important;
  }
  .pro-tip::before {
    display: none !important;
  }
  .pro-tip::after {
    display: none !important;
  }
  .pro-tip strong {
    font-size: 0.7rem !important;
    margin-bottom: 5px !important;
    letter-spacing: 0.06em !important;
  }

  /* ---------- DASHBOARD GRID · single column stack ---------- */
  .dashboard-grid {
    display: block !important;
    gap: 14px !important;
  }
  .forms-section,
  .content-section {
    display: block !important;
    gap: 0 !important;
  }
  .forms-section > * + *,
  .content-section > * + * {
    margin-top: 14px !important;
  }

  /* ---------- TASK / ASSIGNMENT / CLASSROOM ITEMS ---------- */
  .task-item,
  .assignment-item,
  .classroom-item {
    padding: 14px !important;
    border-radius: 12px !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 10px !important;
    max-width: 100% !important;
  }
  .task-text {
    font-size: 0.9rem !important;
    white-space: normal !important;
    overflow: visible !important;
    text-overflow: unset !important;
    line-height: 1.4 !important;
  }
  .task-actions {
    width: 100% !important;
    justify-content: flex-end !important;
  }
  .task-actions .btn {
    flex: 1 !important;
    font-size: 0.75rem !important;
    padding: 8px 10px !important;
  }
  .assignment-header,
  .classroom-item-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 8px !important;
  }
  .assignment-title,
  .classroom-item-title {
    font-size: 0.95rem !important;
    white-space: normal !important;
    overflow: visible !important;
    text-overflow: unset !important;
    line-height: 1.3 !important;
  }
  .assignment-date,
  .classroom-item-date {
    font-size: 0.65rem !important;
    padding: 3px 10px !important;
  }
  .assignment-actions {
    justify-content: flex-start !important;
    flex-wrap: wrap !important;
  }
  .assignment-actions .btn {
    font-size: 0.75rem !important;
    padding: 8px 12px !important;
  }

  /* ---------- PRIORITY SELECTOR ---------- */
  .priority-selector {
    flex-direction: column !important;
    gap: 8px !important;
  }
  .priority-option {
    padding: 12px !important;
    font-size: 0.85rem !important;
  }

  /* ---------- INPUTS ---------- */
  input,
  textarea,
  select {
    padding: 12px 14px !important;
    font-size: 16px !important; /* prevents iOS auto-zoom */
    border-radius: 12px !important;
  }
  .form-group {
    margin-bottom: 14px !important;
  }
  .form-group label {
    font-size: 0.8rem !important;
    margin-bottom: 6px !important;
    white-space: normal !important;
  }

  /* ---------- BUTTONS · touch-friendly ---------- */
  .btn {
    padding: 10px 16px !important;
    font-size: 0.85rem !important;
    min-height: 42px !important;
    border-radius: 10px !important;
  }
  .btn-submit {
    padding: 14px 18px !important;
    font-size: 0.95rem !important;
    min-height: 48px !important;
  }

  /* ---------- STREAK CARD ---------- */
  .streak-card {
    padding: 24px 18px !important;
  }
  .streak-number {
    font-size: 3rem !important;
    margin: 12px 0 !important;
  }
  .streak-label {
    font-size: 0.95rem !important;
    margin-bottom: 16px !important;
  }
  .streak-btn {
    padding: 14px 18px !important;
    font-size: 0.95rem !important;
  }

  /* ---------- GOAL CARD ---------- */
  .goal-text {
    font-size: 0.9rem !important;
    margin-bottom: 10px !important;
  }
  .goal-stats {
    font-size: 0.825rem !important;
  }

  /* ---------- MOTIVATION ---------- */
  .quote-text {
    font-size: 1.05rem !important;
    line-height: 1.5 !important;
  }
  .quote-author {
    font-size: 0.85rem !important;
  }

  /* ---------- CLASSES GRID ---------- */
  .classes-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  .class-card {
    padding: 16px !important;
  }
  .class-card-title {
    font-size: 1rem !important;
  }
  .class-card-code {
    font-size: 0.7rem !important;
    padding: 4px 10px !important;
  }

  /* ---------- LEADERBOARD ---------- */
  .leaderboard-stats {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 8px !important;
  }
  .leaderboard-stat {
    padding: 10px !important;
  }
  .leaderboard-stat .value {
    font-size: 1.15rem !important;
  }
  .leaderboard-stat .label {
    font-size: 0.6rem !important;
  }
  .leaderboard-item {
    flex-direction: row !important;
    flex-wrap: wrap !important;
    gap: 10px !important;
    padding: 12px !important;
  }
  .leaderboard-rank {
    font-size: 1.1rem !important;
    width: 32px !important;
  }
  .leaderboard-avatar {
    width: 36px !important;
    height: 36px !important;
    font-size: 0.9rem !important;
  }
  .leaderboard-info {
    flex: 1 1 60% !important;
  }
  .leaderboard-name {
    font-size: 0.9rem !important;
  }
  .leaderboard-subtitle {
    font-size: 0.7rem !important;
  }
  .leaderboard-score {
    font-size: 1rem !important;
    min-width: auto !important;
    margin-left: auto !important;
  }
  .leaderboard-stats-row {
    flex-wrap: wrap !important;
    gap: 4px !important;
  }
  .stats-badge {
    font-size: 0.625rem !important;
    padding: 2px 8px !important;
  }

  /* ---------- BADGES ---------- */
  .badges-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 10px !important;
  }
  .badge-item {
    grid-template-columns: 36px 1fr !important;
    padding: 10px !important;
    gap: 10px !important;
  }
  .badge-icon {
    width: 36px !important;
    height: 36px !important;
    font-size: 1.1rem !important;
  }
  .badge-title {
    font-size: 0.8rem !important;
  }
  .badge-desc {
    font-size: 0.7rem !important;
  }

  /* ---------- STATISTICS ---------- */
  .statistics-grid {
    display: block !important;
    gap: 14px !important;
  }
  .statistics-header {
    padding: 16px !important;
    margin-bottom: 14px !important;
  }
  .statistics-header h2 {
    font-size: 1.15rem !important;
  }
  .statistics-subtitle {
    font-size: 0.825rem !important;
    margin-bottom: 12px !important;
  }
  .stats-controls {
    flex-direction: column !important;
    gap: 8px !important;
    margin-top: 12px !important;
    padding-top: 12px !important;
  }
  .stats-controls .btn {
    width: 100% !important;
  }
  .stats-overview-cards {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 10px !important;
    margin-bottom: 16px !important;
  }
  .stats-overview-card {
    padding: 14px 12px !important;
  }
  .stats-overview-icon {
    font-size: 1.5rem !important;
    margin-bottom: 6px !important;
  }
  .stats-overview-number {
    font-size: 1.4rem !important;
  }
  .stats-overview-label {
    font-size: 0.65rem !important;
    margin-bottom: 6px !important;
  }
  .stats-overview-trend {
    font-size: 0.65rem !important;
  }
  .charts-container {
    display: block !important;
    gap: 12px !important;
  }
  .chart-card {
    padding: 16px !important;
    margin-bottom: 12px !important;
  }
  .chart-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 6px !important;
    margin-bottom: 12px !important;
  }
  .chart-header h3 {
    font-size: 1rem !important;
  }
  .chart-description {
    font-size: 0.75rem !important;
  }
  .chart-wrapper {
    height: 200px !important;
    min-height: 180px !important;
  }
  .stats-detailed-container,
  .performance-metrics {
    padding: 16px !important;
    margin-top: 12px !important;
  }
  .stats-detailed-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 10px !important;
  }
  .metric-card {
    padding: 12px !important;
  }
  .metric-value {
    font-size: 1.35rem !important;
  }
  .metric-label {
    font-size: 0.75rem !important;
  }
  .metric-details {
    font-size: 0.65rem !important;
  }

  /* ---------- TOOLS GRID ---------- */
  .tools-grid {
    grid-template-columns: 1fr !important;
    gap: 10px !important;
  }
  .tool-item {
    padding: 16px !important;
    display: flex !important;
    align-items: center !important;
    gap: 14px !important;
    text-align: left !important;
  }
  .tool-icon {
    font-size: 1.8rem !important;
    margin-bottom: 0 !important;
    animation: none !important;
  }
  .tool-name {
    font-size: 0.95rem !important;
    margin-bottom: 2px !important;
    text-align: left !important;
  }
  .tool-desc {
    font-size: 0.75rem !important;
    text-align: left !important;
    -webkit-line-clamp: 2 !important;
  }

  /* ---------- FOCUS PORTAL ---------- */
  .focus-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  .focus-card {
    padding: 16px !important;
  }
  .focus-card h3 {
    font-size: 1rem !important;
  }
  .focus-timer-display {
    font-size: 2rem !important;
  }
  .focus-metrics {
    grid-template-columns: repeat(2, 1fr) !important;
    font-size: 0.75rem !important;
  }
  .sound-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  /* ---------- CLASSROOM ---------- */
  #inClassView > * + * {
    margin-top: 20px !important;
  }
  .class-code-display {
    padding: 20px 16px !important;
    border-radius: 18px !important;
  }
  .class-code-display h2 {
    font-size: 1.15rem !important;
  }
  .class-code-display .code {
    font-size: 1.6rem !important;
    letter-spacing: 0.15em !important;
  }
  .aggregate-heatmap-cell {
    min-height: 22px !important;
  }

  /* ---------- MEMORY WALL ---------- */
  .memory-whiteboard,
  #studentMemoryWhiteboard {
    height: 420px !important;
  }
  .student-sticky-note,
  .sticky-note {
    width: 180px !important;
    min-height: 160px !important;
    padding: 12px !important;
  }
  .student-note-text {
    font-size: 13px !important;
  }

  /* ---------- BOTTOM FEATURES (dashboard row) ---------- */
  .bottom-features {
    margin-top: 20px !important;
    padding-top: 16px !important;
  }
  .bottom-features-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  .bottom-feature-card {
    padding: 14px !important;
  }

  /* ---------- MODALS ---------- */
  .student-popup,
  .referral-modal-card,
  .story-modal-content,
  .rainbow-modal-card,
  .forest-modal-card {
    max-width: 100% !important;
    margin: 0 8px !important;
    border-radius: 20px !important;
  }
  .student-popup-body,
  .story-modal-body,
  .referral-modal-card,
  .rainbow-modal-card,
  .forest-modal-card {
    padding: 16px !important;
  }
  .student-popup-header {
    padding: 16px 18px !important;
  }
  .student-popup-header h3 {
    font-size: 1.05rem !important;
    padding-right: 34px !important;
  }

  /* ---------- TOASTS ---------- */
  .toast-container,
  #toastContainer {
    top: 66px !important;
    right: 10px !important;
    left: 10px !important;
    max-width: none !important;
    align-items: stretch !important;
  }
  .toast {
    min-width: auto !important;
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 14px !important;
    font-size: 0.825rem !important;
  }
  .toast > span:first-child {
    font-size: 1rem !important;
  }

  /* ---------- SYNC STATUS ---------- */
  .sync-status {
    top: 66px !important;
    left: 10px !important;
    right: 10px !important;
    max-width: none !important;
    font-size: 0.75rem !important;
  }

  /* ---------- FLOATING BUTTONS ---------- */
  .feedback-btn {
    bottom: 78px !important;
    right: 12px !important;
    padding: 10px 14px !important;
    font-size: 0.7rem !important;
    z-index: 1005 !important;
    min-height: 40px !important;
  }
  .chatbot-fab {
    right: 12px !important;
    bottom: 132px !important;
    z-index: 1005 !important;
  }
  .chatbot-btn,
  .chatbot-img {
    width: 64px !important;
    height: 64px !important;
  }
  .chatbot-bubble {
    max-width: 200px !important;
    font-size: 0.75rem !important;
    padding: 8px 12px !important;
  }

  /* ---------- GLOBAL SPACE TOKENS · tighter ---------- */
  :root {
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 56px;
    --card-pad: 16px;
    --section-gap: 20px;
  }

  /* ---------- FORCE NO HORIZONTAL SCROLL ---------- */
  html, body {
    overflow-x: hidden !important;
    max-width: 100vw !important;
  }
  .app-layout,
  .dashboard-grid,
  .content-section,
  .forms-section {
    overflow-x: hidden !important;
  }

  /* ---------- BOTTOM NAV BAR ---------- */
  body { padding-bottom: 68px !important; }

  .student-bottom-nav {
    display: flex !important;
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 64px !important;
    background: var(--card) !important;
    border-top: 1px solid var(--border) !important;
    z-index: 1010 !important;
    padding: 6px 8px !important;
    padding-bottom: max(6px, env(safe-area-inset-bottom)) !important;
    box-shadow: 0 -4px 20px rgba(60, 42, 15, 0.10) !important;
    justify-content: space-around !important;
    align-items: stretch !important;
    gap: 2px !important;
  }
  .student-bottom-nav button {
    flex: 1 !important;
    min-width: 0 !important;
    background: transparent !important;
    border: none !important;
    color: var(--text-muted) !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 2px !important;
    font-family: var(--font-ui) !important;
    font-size: 0.625rem !important;
    font-weight: 700 !important;
    cursor: pointer !important;
    border-radius: 12px !important;
    padding: 4px 2px !important;
    transition: all 0.15s ease !important;
    -webkit-tap-highlight-color: transparent !important;
    letter-spacing: 0.02em;
  }
  .student-bottom-nav button .bn-icon {
    font-size: 1.35rem !important;
    line-height: 1 !important;
    display: block !important;
    margin-bottom: 1px !important;
  }
  .student-bottom-nav button.active {
    background: var(--ember-soft) !important;
    color: var(--ember) !important;
  }
  .student-bottom-nav button:active {
    transform: scale(0.94) !important;
  }

  /* Hide tour tooltips at bottom on very small screens to avoid overlap */
  @media (max-width: 500px) {
    .tour-tooltip { max-width: 240px !important; font-size: 0.75rem !important; }
  }
}

/* ============================================================
   SMALL PHONES · ≤400px
   ============================================================ */
@media (max-width: 400px) {
  .main-content {
    padding: 12px 12px 92px !important;
  }
  .dashboard-header h1 {
    font-size: 1.3rem !important;
  }
  .stat-card {
    padding: 10px 10px !important;
  }
  .stat-icon {
    width: 34px !important;
    height: 34px !important;
    font-size: 1rem !important;
  }
  .stat-number {
    font-size: 1.1rem !important;
  }
  .student-bottom-nav button {
    font-size: 0.55rem !important;
  }
  .student-bottom-nav button .bn-icon {
    font-size: 1.2rem !important;
  }
  .class-code-display .code {
    font-size: 1.35rem !important;
    letter-spacing: 0.1em !important;
  }
  .bottom-features-grid { gap: 10px !important; }
  .badges-grid { grid-template-columns: 1fr !important; }
}

/* ============================================================
   TABLET · 901–1020px · keep sidebar hidden but larger
   ============================================================ */
@media (min-width: 901px) and (max-width: 1020px) {
  .sidebar {
    width: 260px !important;
    transform: translateX(-100%) !important;
    opacity: 0 !important;
    visibility: hidden !important;
  }
  .sidebar.active {
    transform: translateX(0) !important;
    opacity: 1 !important;
    visibility: visible !important;
  }
  .main-content {
    margin-left: 0 !important;
    padding-top: 56px !important;
  }
  .top-nav { display: flex !important; align-items: center !important; }
  .mobile-menu-toggle { display: flex !important; }
  .mobile-nav-controls { display: none !important; }
}

@media (max-width: 900px) {
  /* 1 · Break the stacking context on .app-layout so the sidebar
        can stack directly against the overlay at body level. */
  .app-layout {
    position: static !important;
    z-index: auto !important;
    transform: none !important;
    filter: none !important;
    perspective: none !important;
    contain: none !important;
  }

  /* 2 · Overlay sits BELOW the sidebar, no blur at all (the blur was
        both the visible artifact and the click-stealer). */
  .mobile-overlay,
  #mobileOverlay {
    display: none;
    position: fixed !important;
    inset: 0 !important;
    z-index: 1100 !important;
    background: rgba(60, 42, 15, 0.45) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    pointer-events: none !important;
    transition: opacity 0.22s ease !important;
    opacity: 0 !important;
  }
  .mobile-overlay.active,
  #mobileOverlay.active {
    display: block !important;
    pointer-events: auto !important;
    opacity: 1 !important;
  }

  /* 3 · Sidebar sits ABOVE the overlay */
  .sidebar,
  #sidebar {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 84vw !important;
    max-width: 320px !important;
    height: 100vh !important;
    transform: translateX(-105%) !important;
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1) !important;
    z-index: 1200 !important;
    padding: 20px 16px 100px !important;
    margin: 0 !important;

    /* Scrollability */
    overflow-y: auto !important;
    overflow-x: hidden !important;
    -webkit-overflow-scrolling: touch !important;
    overscroll-behavior: contain !important;
    touch-action: pan-y !important;

    /* Must be interactive when active */
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;

    border-right: 1px solid var(--border) !important;
    box-shadow: 8px 0 40px rgba(60, 42, 15, 0.22) !important;
  }
  .sidebar.active,
  #sidebar.active {
    transform: translateX(0) !important;
  }

  /* 4 · Sidebar's own children must be clickable */
  .sidebar *,
  #sidebar * {
    pointer-events: auto;
  }

  /* 5 · Make sure the drawer never gets clipped by an ancestor */
  body {
    overflow-x: hidden !important;
  }

  /* 6 · Hamburger always above everything so it stays tappable */
  .mobile-menu-toggle {
    position: relative !important;
    z-index: 1201 !important;
  }
}