/* ═══════════════════════════════════════════════════════════
   PORTAL.CSS — Adhrit's Learning World
   Complete stylesheet for the SPA
   ═══════════════════════════════════════════════════════════ */

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-dark: #0f0c29;
  --bg-mid: #302b63;
  --bg-light: #24243e;
  --accent: #6c5ce7;
  --accent-light: #a29bfe;
  --gold: #feca57;
  --gold-dark: #f0932b;
  --red: #ff6b6b;
  --green: #55efc4;
  --blue: #48dbfb;
  --pink: #ff9ff3;
  --orange: #fdcb6e;
  --white: #ffffff;
  --text: #e8e8f0;
  --text-dim: #a0a0b8;
  --card-bg: rgba(255,255,255,0.06);
  --card-border: rgba(255,255,255,0.10);
  --card-hover: rgba(255,255,255,0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --header-h: 60px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-mid) 50%, var(--bg-dark) 100%);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
  padding-top: var(--header-h);
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ══════════════════════════════════════════════════
   HEADER
   ══════════════════════════════════════════════════ */

#app-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: rgba(15, 12, 41, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--card-border);
  z-index: 1000;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.header-title {
  font-size: clamp(0.9rem, 3vw, 1.15rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold), var(--accent-light), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header-icon-btn {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 50%;
  color: var(--text);
  font-size: 1.15rem;
  cursor: pointer;
  transition: var(--transition);
}

.header-icon-btn:hover { background: var(--card-hover); transform: scale(1.08); }
.header-icon-btn:active { transform: scale(0.95); }

.header-stars {
  display: flex; align-items: center; gap: 4px;
  background: linear-gradient(135deg, rgba(254,202,87,0.15), rgba(254,202,87,0.05));
  border: 1px solid rgba(254,202,87,0.25);
  border-radius: 20px;
  padding: 4px 12px 4px 8px;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--gold);
}

.star-icon { font-size: 1.1rem; }

.header-level {
  display: flex; align-items: center;
}

.level-badge {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.level-badge.tier-bronze { background: linear-gradient(135deg, #cd7f32, #e8a54b); }
.level-badge.tier-silver { background: linear-gradient(135deg, #a0a0a0, #d0d0d0); color: #333; }
.level-badge.tier-gold { background: linear-gradient(135deg, #ffd700, #ffed4a); color: #333; }
.level-badge.tier-diamond { background: linear-gradient(135deg, #b9f2ff, #48dbfb, #a29bfe); color: #1a1a2e; }

.hidden { display: none !important; }

/* ══════════════════════════════════════════════════
   MAIN CONTAINER
   ══════════════════════════════════════════════════ */

#app-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 16px 100px;
  min-height: calc(100vh - var(--header-h));
  min-height: calc(100dvh - var(--header-h));
}

/* ══════════════════════════════════════════════════
   DASHBOARD VIEW
   ══════════════════════════════════════════════════ */

/* Greeting Section */
.greeting-section {
  text-align: center;
  padding: 30px 0 20px;
}

.greeting-text {
  font-size: clamp(1.3rem, 5vw, 2rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--gold), var(--pink), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.3;
}

.greeting-sub {
  margin-top: 6px;
  color: var(--text-dim);
  font-size: clamp(0.85rem, 2.5vw, 1rem);
}

/* Stats Row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin: 20px 0;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 14px 10px;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover { background: var(--card-hover); transform: translateY(-2px); }

.stat-icon { font-size: 1.5rem; margin-bottom: 4px; }
.stat-value { font-size: 1.4rem; font-weight: 800; color: var(--white); }
.stat-label { font-size: 0.7rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.5px; margin-top: 2px; }

/* XP Bar */
.xp-bar-section {
  margin: 16px 0;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}

.xp-bar-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 8px;
}

.xp-bar-label { font-size: 0.85rem; color: var(--text-dim); }
.xp-bar-value { font-size: 0.85rem; font-weight: 700; color: var(--accent-light); }

.xp-bar-track {
  height: 10px;
  background: rgba(255,255,255,0.08);
  border-radius: 5px;
  overflow: hidden;
}

.xp-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  border-radius: 5px;
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.xp-bar-fill::after {
  content: '';
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 30px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3));
  border-radius: 5px;
}

/* Daily Challenge Card */
.challenge-card {
  background: linear-gradient(135deg, rgba(108,92,231,0.2), rgba(162,155,254,0.1));
  border: 1px solid rgba(108,92,231,0.3);
  border-radius: var(--radius);
  padding: 18px;
  margin: 16px 0;
  position: relative;
  overflow: hidden;
}

.challenge-card::before {
  content: '';
  position: absolute;
  top: -30px; right: -30px;
  width: 80px; height: 80px;
  background: radial-gradient(circle, rgba(108,92,231,0.3), transparent 70%);
  border-radius: 50%;
}

.challenge-header {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 10px;
}

.challenge-icon { font-size: 1.5rem; }
.challenge-title { font-weight: 700; font-size: 1rem; }
.challenge-desc { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 12px; }

.challenge-progress-track {
  height: 8px;
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  overflow: hidden;
}

.challenge-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green), var(--blue));
  border-radius: 4px;
  transition: width 0.5s ease;
}

.challenge-footer {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 8px;
  font-size: 0.8rem; color: var(--text-dim);
}

/* Section Headers */
.section-header {
  display: flex; align-items: center; gap: 10px;
  margin: 28px 0 14px;
}

.section-icon { font-size: 1.4rem; }
.section-title { font-size: 1.1rem; font-weight: 700; color: var(--white); }
.section-line { flex: 1; height: 1px; background: var(--card-border); }

/* Game Cards Grid */
.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}

.game-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 18px 14px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.game-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--card-accent, var(--accent));
  opacity: 0;
  transition: var(--transition);
}

.game-card:hover {
  background: var(--card-hover);
  transform: translateY(-4px);
  border-color: var(--card-accent, var(--accent));
}

.game-card:hover::before { opacity: 1; }
.game-card:active { transform: translateY(-1px) scale(0.98); }

.game-card-icon { font-size: 2.2rem; margin-bottom: 8px; }
.game-card-name { font-size: 0.85rem; font-weight: 600; color: var(--white); line-height: 1.3; }

.game-card-stars {
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--gold);
}

.game-card-best {
  margin-top: 4px;
  font-size: 0.7rem;
  color: var(--text-dim);
}

.game-card-locked {
  opacity: 0.4;
  pointer-events: none;
}

.game-card-locked::after {
  content: '\\1F512';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2rem;
  opacity: 0.5;
}

/* Category color accents */
.game-card[data-cat="math"]     { --card-accent: var(--red); }
.game-card[data-cat="reading"]  { --card-accent: var(--blue); }
.game-card[data-cat="science"]  { --card-accent: var(--green); }
.game-card[data-cat="art"]      { --card-accent: var(--pink); }
.game-card[data-cat="social"]   { --card-accent: var(--orange); }
.game-card[data-cat="hindi"]    { --card-accent: #ff7675; }

/* Progress Bars */
.progress-section {
  margin: 24px 0;
}

.progress-row {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 12px;
}

.progress-label {
  width: 100px;
  font-size: 0.8rem;
  color: var(--text-dim);
  flex-shrink: 0;
}

.progress-track {
  flex: 1;
  height: 8px;
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.8s ease;
}

.progress-fill[data-cat="math"]     { background: linear-gradient(90deg, var(--red), #ff8787); }
.progress-fill[data-cat="reading"]  { background: linear-gradient(90deg, var(--blue), #74d4f5); }
.progress-fill[data-cat="science"]  { background: linear-gradient(90deg, var(--green), #81ecb0); }
.progress-fill[data-cat="art"]      { background: linear-gradient(90deg, var(--pink), #ffb8f0); }
.progress-fill[data-cat="social"]   { background: linear-gradient(90deg, var(--orange), #ffe066); }
.progress-fill[data-cat="hindi"]    { background: linear-gradient(90deg, #ff7675, #fab1a0); }
.progress-fill[data-cat="overall"]  { background: linear-gradient(90deg, var(--accent), var(--accent-light)); }

.progress-pct {
  width: 36px;
  text-align: right;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text);
}

/* ══════════════════════════════════════════════════
   SUBJECT SELECTION VIEW
   ══════════════════════════════════════════════════ */

.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.subject-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px 14px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.subject-card:hover { background: var(--card-hover); transform: translateY(-4px); }
.subject-card:active { transform: scale(0.97); }
.subject-icon { font-size: 2.8rem; margin-bottom: 10px; }
.subject-name { font-size: 1rem; font-weight: 700; color: var(--white); }
.subject-count { font-size: 0.75rem; color: var(--text-dim); margin-top: 4px; }

/* ══════════════════════════════════════════════════
   GAME VIEW
   ══════════════════════════════════════════════════ */

.game-container {
  position: relative;
  width: 100%;
  min-height: calc(100vh - var(--header-h) - 40px);
  min-height: calc(100dvh - var(--header-h) - 40px);
}

/* Game HUD */
.game-hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--card-border);
}

.hud-item {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.9rem;
}

.hud-icon { font-size: 1.1rem; }
.hud-value { font-weight: 700; color: var(--white); }

/* Game Area */
.game-area {
  width: 100%;
  position: relative;
}

/* Answer Bubbles */
.answer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.answer-btn {
  background: var(--card-bg);
  border: 2px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}

.answer-btn:hover { border-color: var(--accent); background: rgba(108,92,231,0.15); }
.answer-btn:active { transform: scale(0.95); }

.answer-btn.correct {
  border-color: var(--green);
  background: rgba(85,239,196,0.2);
  animation: pulse-correct 0.4s ease;
}

.answer-btn.wrong {
  border-color: var(--red);
  background: rgba(255,107,107,0.2);
  animation: shake 0.4s ease;
}

/* Drag & Drop Areas */
.drop-zone {
  min-height: 80px;
  border: 2px dashed var(--card-border);
  border-radius: var(--radius);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  transition: var(--transition);
}

.drop-zone.active {
  border-color: var(--accent);
  background: rgba(108,92,231,0.1);
}

.drop-zone.correct {
  border-color: var(--green);
  background: rgba(85,239,196,0.1);
}

.draggable {
  padding: 10px 16px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  cursor: grab;
  font-size: 1.1rem;
  user-select: none;
  touch-action: none;
  transition: var(--transition);
}

.draggable:active { cursor: grabbing; opacity: 0.8; }
.draggable.dragging { opacity: 0.5; transform: scale(1.05); z-index: 100; }

/* Canvas game area (for tracing etc.) */
.game-canvas-wrap {
  width: 100%;
  aspect-ratio: 4/3;
  max-height: 50vh;
  position: relative;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.game-canvas-wrap canvas {
  width: 100%;
  height: 100%;
  touch-action: none;
}

/* Results Screen */
.results-screen {
  text-align: center;
  padding: 30px 20px;
}

.results-score {
  font-size: 3rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--gold), var(--orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.results-stars {
  font-size: 2.5rem;
  margin: 12px 0;
  letter-spacing: 8px;
}

.results-xp {
  font-size: 1.1rem;
  color: var(--accent-light);
  font-weight: 600;
  margin-bottom: 6px;
}

.results-message {
  font-size: 1rem;
  color: var(--text-dim);
  margin-bottom: 24px;
}

.results-btns {
  display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
}

/* ══════════════════════════════════════════════════
   BADGES VIEW
   ══════════════════════════════════════════════════ */

.badges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 12px;
}

.badge-item {
  text-align: center;
  padding: 16px 8px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.badge-item.earned {
  border-color: var(--gold);
  background: rgba(254,202,87,0.08);
}

.badge-item.locked { opacity: 0.35; }

.badge-emoji { font-size: 2rem; margin-bottom: 6px; }
.badge-name { font-size: 0.7rem; color: var(--text-dim); line-height: 1.3; }
.badge-item.earned .badge-name { color: var(--text); }

/* ══════════════════════════════════════════════════
   ADMIN PANEL
   ══════════════════════════════════════════════════ */

.admin-container {
  max-width: 700px;
  margin: 0 auto;
}

/* PIN Entry */
.pin-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
  gap: 20px;
}

.pin-title { font-size: 1.3rem; font-weight: 700; }

.pin-dots {
  display: flex; gap: 12px;
}

.pin-dot {
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  transition: var(--transition);
}

.pin-dot.filled { background: var(--accent); }

.pin-keypad {
  display: grid;
  grid-template-columns: repeat(3, 60px);
  gap: 10px;
  margin-top: 10px;
}

.pin-key {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--white);
  font-size: 1.3rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
  display: flex; align-items: center; justify-content: center;
}

.pin-key:hover { background: var(--card-hover); }
.pin-key:active { transform: scale(0.92); }
.pin-key.wide { grid-column: span 2; width: auto; border-radius: 30px; }

/* Admin Tabs */
.admin-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  padding: 4px;
}

.admin-tab {
  flex: 1;
  padding: 10px;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-dim);
  border: none;
  background: none;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}

.admin-tab.active {
  background: var(--accent);
  color: var(--white);
}

/* Admin Cards */
.admin-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 14px;
}

.admin-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--white);
}

/* Toggle Switch */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--card-border);
}

.toggle-row:last-child { border-bottom: none; }

.toggle-label { font-size: 0.9rem; color: var(--text); }

.toggle-switch {
  width: 44px; height: 24px;
  background: rgba(255,255,255,0.15);
  border-radius: 12px;
  position: relative;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.toggle-switch.on { background: var(--accent); }

.toggle-switch::after {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: white;
  top: 3px; left: 3px;
  transition: var(--transition);
}

.toggle-switch.on::after { left: 23px; }

/* Chart container */
.chart-container {
  width: 100%;
  aspect-ratio: 2/1;
  position: relative;
}

.chart-container canvas { width: 100%; height: 100%; }

/* ══════════════════════════════════════════════════
   BUTTONS
   ══════════════════════════════════════════════════ */

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(108,92,231,0.4); }
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--card-bg);
  color: var(--text);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}

.btn-secondary:hover { background: var(--card-hover); }

.btn-danger {
  background: rgba(255,107,107,0.15);
  color: var(--red);
  border: 1px solid rgba(255,107,107,0.3);
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}

.btn-danger:hover { background: rgba(255,107,107,0.25); }

.btn-sm { padding: 8px 18px; font-size: 0.85rem; }

/* ══════════════════════════════════════════════════
   OVERLAYS
   ══════════════════════════════════════════════════ */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  animation: fadeIn 0.3s ease;
}

.overlay-card {
  background: linear-gradient(135deg, var(--bg-mid), var(--bg-light));
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 30px;
  text-align: center;
  max-width: 340px;
  width: 90%;
  animation: scaleIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.levelup-icon { font-size: 4rem; margin-bottom: 12px; }
.badge-icon { font-size: 4rem; margin-bottom: 12px; }

.overlay-card h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--gold), var(--orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.overlay-card p { color: var(--text-dim); margin-bottom: 20px; }

/* ══════════════════════════════════════════════════
   TOAST NOTIFICATIONS
   ══════════════════════════════════════════════════ */

#toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  pointer-events: none;
}

.toast {
  background: rgba(30, 28, 60, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-size: 0.9rem;
  color: var(--text);
  pointer-events: auto;
  animation: toastIn 0.4s ease, toastOut 0.4s ease 2.6s forwards;
  max-width: 320px;
  text-align: center;
}

.toast-success { border-color: var(--green); }
.toast-star { border-color: var(--gold); }

/* ══════════════════════════════════════════════════
   CONFETTI
   ══════════════════════════════════════════════════ */

.confetti {
  position: fixed;
  top: -10px;
  z-index: 4000;
  pointer-events: none;
  animation: confettiFall var(--ct, 2s) ease forwards;
}

/* ══════════════════════════════════════════════════
   ANIMATIONS
   ══════════════════════════════════════════════════ */

@keyframes fadeIn {
  from { opacity: 0; } to { opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.7); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes pulse-correct {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes confettiFall {
  0% { transform: translateY(0) rotate(0); opacity: 1; }
  100% { transform: translateY(var(--cdy, 80vh)) rotate(var(--cdr, 600deg)); opacity: 0; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Loading spinner */
.spinner {
  width: 30px; height: 30px;
  border: 3px solid var(--card-border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 20px auto;
}

/* Feedback flash */
.feedback-flash {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1500;
  animation: feedbackFlash 0.4s ease forwards;
}

.feedback-flash.correct { background: rgba(85,239,196,0.15); }
.feedback-flash.wrong { background: rgba(255,107,107,0.15); }

@keyframes feedbackFlash {
  0% { opacity: 1; }
  100% { opacity: 0; }
}

/* ══════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════ */

@media (max-width: 480px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .games-grid { grid-template-columns: repeat(2, 1fr); }
  .subject-grid { grid-template-columns: repeat(2, 1fr); }
  .badges-grid { grid-template-columns: repeat(3, 1fr); }
  .results-btns { flex-direction: column; }
  .results-btns .btn-primary,
  .results-btns .btn-secondary { width: 100%; }
  .admin-tabs { font-size: 0.7rem; }
}

@media (min-width: 768px) {
  .games-grid { grid-template-columns: repeat(3, 1fr); }
  .subject-grid { grid-template-columns: repeat(3, 1fr); }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}