/* ================================================================
   GAMIFICATION SHARED KIT — theme variables, XP/level/streak/coin
   widgets, toasts, confetti, glass cards. Loaded on every page.
   ================================================================ */

:root {
  --g-bg: #f0f7ff;
  --g-bg-alt: #e8f1fd;
  --g-card: #ffffff;
  --g-card-glass: rgba(255,255,255,0.72);
  --g-border: #e2e8f0;
  --g-text: #1e293b;
  --g-text-muted: #64748b;
  --g-primary: #3b82f6;
  --g-primary-dark: #2563eb;
  --g-secondary: #10b981;
  --g-gold: #f59e0b;
  --g-danger: #ef4444;
  --g-purple: #8b5cf6;
  --g-shadow: 0 4px 24px rgba(59,130,246,0.10);
  --g-shadow-lg: 0 12px 40px rgba(15,23,42,0.12);
  --g-radius: 20px;
  --g-radius-sm: 12px;
}

:root[data-theme="dark"] {
  --g-bg: #0b1220;
  --g-bg-alt: #0f172a;
  --g-card: #141d2e;
  --g-card-glass: rgba(20,29,46,0.65);
  --g-border: #223049;
  --g-text: #e8edf7;
  --g-text-muted: #8b9bb8;
  --g-primary: #60a5fa;
  --g-primary-dark: #3b82f6;
  --g-secondary: #34d399;
  --g-gold: #fbbf24;
  --g-danger: #f87171;
  --g-purple: #a78bfa;
  --g-shadow: 0 4px 24px rgba(0,0,0,0.35);
  --g-shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --g-bg: #0b1220;
    --g-bg-alt: #0f172a;
    --g-card: #141d2e;
    --g-card-glass: rgba(20,29,46,0.65);
    --g-border: #223049;
    --g-text: #e8edf7;
    --g-text-muted: #8b9bb8;
    --g-primary: #60a5fa;
    --g-primary-dark: #3b82f6;
    --g-secondary: #34d399;
    --g-gold: #fbbf24;
    --g-danger: #f87171;
    --g-purple: #a78bfa;
    --g-shadow: 0 4px 24px rgba(0,0,0,0.35);
    --g-shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
  }
}

body { transition: background-color 0.3s ease, color 0.3s ease; }

/* ========== GLASS CARD UTILITY ========== */
.card-glass {
  background: var(--g-card-glass);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border: 1.5px solid var(--g-border);
  border-radius: var(--g-radius);
  box-shadow: var(--g-shadow);
}

/* ========== THEME TOGGLE (and other round icon buttons) ========== */
.theme-toggle, .icon-btn {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--g-border);
  background: var(--g-card);
  color: var(--g-text);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.15rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: var(--g-shadow);
}
.theme-toggle:hover, .icon-btn:hover { transform: rotate(20deg) scale(1.05); }
.theme-toggle:active, .icon-btn:active { transform: scale(0.92); }

/* ========== PLAYER HEADER BAR ========== */
.player-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px;
  border-radius: 99px;
  flex-wrap: wrap;
}

.avatar-ring {
  position: relative;
  width: 48px; height: 48px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
  color: white;
  background: linear-gradient(135deg, var(--g-primary), var(--g-purple));
  flex-shrink: 0;
  box-shadow: 0 0 0 3px var(--g-card), 0 0 0 4.5px var(--g-primary);
}
.avatar-ring .lvl-badge {
  position: absolute;
  bottom: -6px; right: -6px;
  background: var(--g-gold);
  color: #452a00;
  border-radius: 99px;
  font-size: 0.62rem;
  font-weight: 900;
  padding: 2px 6px;
  border: 2px solid var(--g-card);
}

.player-name-xp { display: flex; flex-direction: column; gap: 4px; min-width: 140px; }
.player-name { font-weight: 800; font-size: 0.95rem; color: var(--g-text); }

.xp-bar-track {
  width: 100%;
  min-width: 120px;
  height: 8px;
  background: var(--g-border);
  border-radius: 99px;
  overflow: hidden;
}
.xp-bar-fill {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--g-primary), var(--g-purple));
  transition: width 0.8s cubic-bezier(0.22,1,0.36,1);
  position: relative;
}
.xp-bar-fill::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent);
  animation: xpShine 2.2s ease-in-out infinite;
}
@keyframes xpShine { 0% { transform: translateX(-100%);} 100% { transform: translateX(200%);} }

.stat-pill {
  display: flex; align-items: center; gap: 6px;
  background: var(--g-bg-alt);
  border: 1.5px solid var(--g-border);
  border-radius: 99px;
  padding: 7px 14px;
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--g-text);
  white-space: nowrap;
}
.stat-pill.coins { color: var(--g-gold); }
.stat-pill.streak { color: #fb923c; }
.stat-pill.streak.hot { animation: pulseStreak 1.4s ease-in-out infinite; }
@keyframes pulseStreak { 0%,100% { transform: scale(1); } 50% { transform: scale(1.08); } }

/* ========== TOASTS ========== */
#toast-stack {
  position: fixed;
  top: 20px; right: 20px;
  display: flex; flex-direction: column; gap: 10px;
  z-index: 9999;
  pointer-events: none;
  max-width: min(360px, calc(100vw - 40px));
}
.g-toast {
  pointer-events: auto;
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px;
  border-radius: var(--g-radius-sm);
  background: var(--g-card);
  border: 1.5px solid var(--g-border);
  box-shadow: var(--g-shadow-lg);
  animation: toastIn 0.4s cubic-bezier(0.34,1.56,0.64,1);
  color: var(--g-text);
}
.g-toast.leaving { animation: toastOut 0.3s ease forwards; }
@keyframes toastIn { from { opacity:0; transform: translateX(40px) scale(0.9);} to { opacity:1; transform: translateX(0) scale(1);} }
@keyframes toastOut { to { opacity:0; transform: translateX(40px) scale(0.9);} }

.g-toast .icon { font-size: 1.6rem; flex-shrink: 0; }
.g-toast .title { font-weight: 900; font-size: 0.92rem; margin-bottom: 2px; }
.g-toast .sub { font-size: 0.78rem; color: var(--g-text-muted); font-weight: 700; }
.g-toast.achievement { border-color: var(--g-gold); background: linear-gradient(135deg, rgba(245,158,11,0.12), var(--g-card)); }
.g-toast.levelup { border-color: var(--g-purple); background: linear-gradient(135deg, rgba(139,92,246,0.14), var(--g-card)); }
.g-toast.streak-broken { border-color: var(--g-danger); }

/* ========== LEVEL-UP MODAL ========== */
.g-modal-overlay {
  position: fixed; inset: 0;
  background: rgba(8,12,22,0.55);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  z-index: 10000;
  animation: fadeIn 0.25s ease;
  padding: 20px;
}
.g-modal {
  background: var(--g-card);
  border-radius: 24px;
  padding: 40px 32px;
  max-width: 380px;
  width: 100%;
  text-align: center;
  border: 1.5px solid var(--g-border);
  box-shadow: var(--g-shadow-lg);
  animation: popIn 0.45s cubic-bezier(0.34,1.56,0.64,1);
}
.g-modal .big-emoji { font-size: 4rem; margin-bottom: 8px; }
.g-modal h3 { font-size: 1.5rem; font-weight: 900; color: var(--g-text); margin-bottom: 6px; }
.g-modal p { color: var(--g-text-muted); font-weight: 600; margin-bottom: 22px; }
.g-modal .btn { width: 100%; }
.g-modal input {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid var(--g-border);
  border-radius: var(--g-radius-sm);
  font-family: 'Nunito', sans-serif;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--g-text);
  background: var(--g-bg-alt);
  outline: none;
  text-align: center;
  margin-bottom: 14px;
}
.g-modal input:focus { border-color: var(--g-primary); }
.g-modal .error-text { color: var(--g-danger); font-size: 0.82rem; font-weight: 700; margin: -8px 0 12px; min-height: 18px; }
.g-modal .btn-row { display: flex; gap: 10px; }
.g-modal .btn-row .btn { width: auto; flex: 1; }

/* ========== CONFETTI CANVAS ========== */
#confetti-canvas {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 10001;
}

/* ========== MYSTERY BOX / DAILY REWARD ========== */
.mystery-box-btn {
  display: flex; align-items: center; gap: 10px;
  background: linear-gradient(135deg, var(--g-gold), #f97316);
  color: #452a00;
  border: none;
  border-radius: 99px;
  padding: 12px 22px;
  font-weight: 900;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(245,158,11,0.35);
  transition: transform 0.2s ease;
}
.mystery-box-btn:hover { transform: translateY(-2px) scale(1.02); }
.mystery-box-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ========== RESPONSIVE ========== */
@media (max-width: 640px) {
  .player-bar { padding: 10px 14px; gap: 10px; }
  .player-name-xp { min-width: 100px; }
  .stat-pill { padding: 6px 10px; font-size: 0.78rem; }
}