/* ============================================================
   CaribFlow — css/components.css
   Glassmorphic UI Library: Island, Cards, Buttons, Modals,
   Nav, Scrollbars, Achievements, Spin Wheel, Loot Box, Pet
   ============================================================ */

@import url("./variables.css");

/* ── CUSTOM SCROLLBAR ─────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); border-radius: var(--radius-pill); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: var(--radius-pill); }
::-webkit-scrollbar-thumb:hover { background: var(--accent-color); }
* { scrollbar-width: thin; scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track); }

/* ═══════════════════════════════════════════════════════════
   DYNAMIC ISLAND
   ═══════════════════════════════════════════════════════════ */
#dynamic-island {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-island);
  background: var(--island-bg);
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: 10px 20px;
  min-width: 140px;
  max-width: 480px;
  width: auto;
  color: var(--island-text);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition:
    width 0.4s var(--ease-spring),
    padding 0.3s var(--ease-smooth),
    border-radius 0.4s var(--ease-smooth),
    min-width 0.4s var(--ease-spring);
  box-shadow: 0 4px 24px rgba(0,0,0,0.3), 0 0 0 1px rgba(255,255,255,0.06) inset;
  overflow: hidden;
  white-space: nowrap;
}
#dynamic-island .island-icon {
  font-size: 1.1em;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}
#dynamic-island .island-content {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  transition: var(--transition-smooth);
}
#dynamic-island .island-label {
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  opacity: 0.9;
}
#dynamic-island .island-value {
  font-size: var(--text-sm);
  font-weight: var(--fw-bold);
  color: var(--accent-color);
}

/* Island State: Expanded (notification) */
#dynamic-island.island-expanded {
  min-width: 320px;
  padding: 14px 24px;
  border-radius: var(--radius-lg);
}
/* Island State: Alert */
#dynamic-island.island-alert {
  background: var(--color-error);
  animation: islandPulse 1s ease-in-out 2;
}
/* Island State: Success */
#dynamic-island.island-success {
  background: var(--color-success);
}
/* Island State: XP Gain */
#dynamic-island.island-xp {
  background: linear-gradient(90deg, #9B59B6, #6C3483);
}
/* Island State: Timer */
#dynamic-island.island-timer {
  min-width: 200px;
  font-family: var(--font-family-mono);
  letter-spacing: 0.05em;
}

@keyframes islandPulse {
  0%, 100% { transform: translateX(-50%) scale(1); }
  50%       { transform: translateX(-50%) scale(1.04); }
}
@keyframes islandExpand {
  from { min-width: 140px; border-radius: var(--radius-pill); }
  to   { min-width: 320px; border-radius: var(--radius-lg); }
}

/* Island activity dot */
.island-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-color);
  animation: dotBlink 1.2s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes dotBlink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

/* ═══════════════════════════════════════════════════════════
   GLASS CARDS
   ═══════════════════════════════════════════════════════════ */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-apple);
  padding: var(--space-6);
  box-shadow: var(--glass-shadow);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}
.glass-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--glass-shadow-lg);
  border-color: rgba(255,255,255,0.2);
}
.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  opacity: 0.6;
}

.glass-card-sm  { padding: var(--space-4); border-radius: var(--radius-apple); }
.glass-card-lg  { padding: var(--space-8); border-radius: var(--radius-lg); }
.glass-card-xl  { padding: var(--space-10); border-radius: var(--radius-xl); }

/* Accent-tinted card */
.glass-card-accent {
  border-color: var(--accent-color);
  box-shadow: var(--glass-shadow), 0 0 0 1px var(--accent-color), 0 0 20px var(--accent-glow);
}

/* ═══════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 11px 22px;
  border-radius: var(--radius-pill);
  font-size: var(--text-base);
  font-weight: var(--fw-semibold);
  font-family: var(--font-active);
  cursor: pointer;
  border: none;
  transition: var(--transition-smooth);
  text-decoration: none;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  overflow: hidden;
}
.btn:active { transform: scale(0.97); }

/* Ripple effect */
.btn::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  width: 0;
  height: 0;
  background: rgba(255,255,255,0.3);
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s, opacity 0.4s;
  opacity: 0;
}
.btn.ripple::after {
  width: 200px;
  height: 200px;
  opacity: 0;
  transition: width 0.4s ease, height 0.4s ease, opacity 0.6s ease;
}

/* Primary */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--accent-text);
  box-shadow: 0 4px 16px var(--accent-glow);
}
.btn-primary:hover {
  box-shadow: 0 6px 24px var(--accent-glow);
  transform: translateY(-1px);
}

/* Secondary/Glass */
.btn-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  box-shadow: var(--glass-shadow-sm);
}
.btn-glass:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-color);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--accent-color);
  border: 1.5px solid var(--accent-color);
}
.btn-ghost:hover {
  background: var(--accent-subtle);
}

/* Danger */
.btn-danger {
  background: var(--color-error);
  color: white;
}

/* Coin button */
.btn-coin {
  background: rgba(255, 215, 0, 0.15);
  color: var(--coin-color);
  border: 1px solid rgba(255, 215, 0, 0.3);
  font-weight: var(--fw-bold);
}
.btn-coin:hover { background: rgba(255, 215, 0, 0.25); }

/* Diamond button */
.btn-diamond {
  background: rgba(0, 212, 255, 0.15);
  color: var(--diamond-color);
  border: 1px solid rgba(0, 212, 255, 0.3);
  font-weight: var(--fw-bold);
}
.btn-diamond:hover { background: rgba(0, 212, 255, 0.25); }

/* Sizes */
.btn-xs  { padding: 6px 12px; font-size: var(--text-xs); }
.btn-sm  { padding: 8px 16px; font-size: var(--text-sm); }
.btn-lg  { padding: 14px 28px; font-size: var(--text-lg); }
.btn-xl  { padding: 18px 36px; font-size: var(--text-xl); }
.btn-icon { width: 40px; height: 40px; padding: 0; border-radius: var(--radius-pill); }
.btn-icon-lg { width: 52px; height: 52px; }
.btn-full { width: 100%; }

/* Disabled state */
.btn:disabled, .btn.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* Loading state */
.btn.loading .btn-text { opacity: 0; }
.btn.loading::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════════════════════════════════════════════════════
   INPUTS & FORMS
   ═══════════════════════════════════════════════════════════ */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.input-label {
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: var(--text-secondary);
}
.input-field {
  width: 100%;
  padding: 12px 16px;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: var(--radius-apple);
  color: var(--text-main);
  font-size: var(--text-base);
  font-family: var(--font-active);
  transition: var(--transition-fast);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
}
.input-field:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--accent-subtle);
  background: var(--panel-overlay);
}
.input-field.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(255,59,48,0.12);
}
.input-field.success {
  border-color: var(--color-success);
}
.input-error-msg {
  font-size: var(--text-xs);
  color: var(--color-error);
  margin-top: var(--space-1);
}

/* Password toggle wrapper */
.input-password-wrap {
  position: relative;
}
.input-password-wrap .input-field {
  padding-right: 48px;
}
.input-password-toggle {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  color: var(--text-muted);
  font-size: 1.1em;
  transition: var(--transition-fast);
  background: none;
  border: none;
  padding: 4px;
}
.input-password-toggle:hover { color: var(--accent-color); }

/* Select */
.select-field {
  width: 100%;
  padding: 12px 40px 12px 16px;
  background: var(--input-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2386868b' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 16px center;
  border: 1.5px solid var(--input-border);
  border-radius: var(--radius-apple);
  color: var(--text-main);
  font-family: var(--font-active);
  font-size: var(--text-base);
  transition: var(--transition-fast);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
}
.select-field:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

/* Textarea */
.textarea-field {
  width: 100%;
  min-height: 120px;
  resize: vertical;
  padding: 12px 16px;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: var(--radius-apple);
  color: var(--text-main);
  font-family: var(--font-active);
  font-size: var(--text-base);
  line-height: 1.6;
  transition: var(--transition-fast);
}
.textarea-field:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

/* Toggle Switch */
.toggle-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
}
.toggle-input { display: none; }
.toggle-track {
  width: 50px;
  height: 28px;
  background: var(--text-muted);
  border-radius: var(--radius-pill);
  position: relative;
  transition: var(--transition-smooth);
  flex-shrink: 0;
}
.toggle-input:checked + .toggle-track { background: var(--accent-color); }
.toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  background: white;
  border-radius: 50%;
  transition: var(--transition-spring);
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}
.toggle-input:checked ~ .toggle-thumb { left: 25px; }
.toggle-label { font-size: var(--text-base); color: var(--text-main); }

/* ═══════════════════════════════════════════════════════════
   NAVIGATION BAR
   ═══════════════════════════════════════════════════════════ */
.nav-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background: var(--nav-bg);
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  border-top: 1px solid var(--glass-border);
  padding: 8px 0 max(8px, env(safe-area-inset-bottom));
  display: flex;
  align-items: center;
  justify-content: space-around;
}
.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  padding: 6px 16px;
  border-radius: var(--radius-apple);
  transition: var(--transition-fast);
  text-decoration: none;
  color: var(--text-muted);
  min-width: 64px;
  background: none;
  border: none;
}
.nav-item:hover { color: var(--accent-color); }
.nav-item.active {
  color: var(--accent-color);
  background: var(--accent-subtle);
}
.nav-item .nav-icon {
  font-size: 1.5rem;
  line-height: 1;
  transition: var(--transition-spring);
}
.nav-item.active .nav-icon { transform: scale(1.1); }
.nav-item .nav-label {
  font-size: var(--text-xs);
  font-weight: var(--fw-medium);
}
.nav-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--color-error);
  color: white;
  font-size: 10px;
  font-weight: var(--fw-bold);
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ═══════════════════════════════════════════════════════════
   MODAL SYSTEM
   ═══════════════════════════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  animation: fadeIn 0.2s ease;
}
.modal-overlay.bottom-sheet {
  align-items: flex-end;
  padding: 0;
}
.modal-box {
  background: var(--panel-overlay);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  max-width: 480px;
  width: 100%;
  position: relative;
  box-shadow: var(--glass-shadow-xl);
  animation: scaleIn 0.25s var(--ease-bounce);
}
.modal-box.bottom-sheet {
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  max-width: 100%;
  width: 100%;
  animation: slideUp 0.3s var(--ease-spring);
}
.modal-box.modal-lg { max-width: 720px; }
.modal-box.modal-full { max-width: 100%; height: 100vh; border-radius: 0; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}
.modal-title {
  font-size: var(--text-xl);
  font-weight: var(--fw-bold);
  color: var(--text-main);
}
.modal-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.modal-close:hover {
  background: var(--color-error);
  color: white;
  border-color: var(--color-error);
}
.modal-body { margin-bottom: var(--space-6); }
.modal-footer {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
}

/* Settings full-screen modal */
.settings-modal {
  position: fixed;
  inset: 0;
  background: var(--panel-overlay);
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  z-index: var(--z-overlay);
  overflow-y: auto;
  padding: var(--space-8) var(--space-4);
  animation: fadeIn 0.25s ease;
}
.settings-section {
  margin-bottom: var(--space-8);
}
.settings-section-title {
  font-size: var(--text-xs);
  font-weight: var(--fw-semibold);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-3);
}
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-apple);
  margin-bottom: var(--space-2);
  transition: var(--transition-fast);
}
.settings-row:hover { background: var(--bg-secondary); }

/* ═══════════════════════════════════════════════════════════
   ACHIEVEMENT SYSTEM
   ═══════════════════════════════════════════════════════════ */
.achievement-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-apple);
  border: 1.5px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}
.achievement-card .achievement-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-apple);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  flex-shrink: 0;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}
.achievement-card .achievement-info {
  flex: 1;
  min-width: 0;
}
.achievement-card .achievement-name {
  font-size: var(--text-base);
  font-weight: var(--fw-semibold);
  color: var(--text-main);
  margin-bottom: var(--space-1);
}
.achievement-card .achievement-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.4;
}

/* Completed state */
.achievement-card.achievement-completed {
  border-color: var(--achievement-gold);
  box-shadow: 0 0 16px rgba(255, 215, 0, 0.2);
}
.achievement-card.achievement-completed .achievement-icon {
  background: rgba(255, 215, 0, 0.15);
  border-color: var(--achievement-gold);
}
.achievement-card.achievement-completed .achievement-name {
  color: var(--achievement-gold);
}
.achievement-card.achievement-completed .unlock-date {
  font-size: var(--text-xs);
  color: var(--achievement-gold);
  margin-top: var(--space-1);
}
/* Shimmer for completed */
.achievement-card.achievement-completed::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,215,0,0.1), transparent);
  animation: shimmerSlide 3s infinite;
}
@keyframes shimmerSlide {
  0%   { left: -100%; }
  100% { left: 200%; }
}

/* In-progress state */
.achievement-card.achievement-in-progress {
  border-color: var(--accent-color);
}
.achievement-card.achievement-in-progress .achievement-icon {
  background: var(--accent-subtle);
  border-color: var(--accent-color);
}

/* Locked state */
.achievement-card.achievement-locked {
  opacity: 0.5;
  filter: grayscale(0.7);
  pointer-events: none;
}
.achievement-card.achievement-locked .achievement-icon {
  filter: grayscale(1);
}
.achievement-unlock-hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-2);
  font-style: italic;
}

/* ═══════════════════════════════════════════════════════════
   SPIN WHEEL CONTAINER
   ═══════════════════════════════════════════════════════════ */
.spin-wheel-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-6);
}
.spin-wheel-wrapper {
  position: relative;
  width: 300px;
  height: 300px;
}
#spin-wheel-canvas {
  border-radius: 50%;
  box-shadow: 0 0 40px var(--accent-glow), var(--glass-shadow-xl);
}
.spin-wheel-pointer {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 12px solid transparent;
  border-right: 12px solid transparent;
  border-top: 24px solid var(--accent-color);
  filter: drop-shadow(0 2px 6px var(--accent-glow));
  z-index: 2;
}
.spin-result-banner {
  text-align: center;
  padding: var(--space-4) var(--space-6);
  background: var(--accent-subtle);
  border: 1px solid var(--accent-color);
  border-radius: var(--radius-pill);
  font-weight: var(--fw-bold);
  color: var(--accent-color);
  animation: bounceIn 0.5s var(--ease-bounce);
}

/* ═══════════════════════════════════════════════════════════
   LOOT BOX SYSTEM
   ═══════════════════════════════════════════════════════════ */
.loot-box {
  width: 160px;
  height: 160px;
  cursor: pointer;
  position: relative;
  transition: var(--transition-spring);
  filter: drop-shadow(0 8px 24px var(--accent-glow));
}
.loot-box:hover { transform: scale(1.06) rotate(-2deg); }
.loot-box:active { transform: scale(0.95); }
.loot-box-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.loot-box.opening {
  animation: chestShake 0.5s var(--ease-bounce);
}
@keyframes chestShake {
  0%,100% { transform: rotate(0deg) scale(1); }
  15%      { transform: rotate(-8deg) scale(1.05); }
  30%      { transform: rotate(8deg) scale(1.08); }
  45%      { transform: rotate(-5deg) scale(1.05); }
  60%      { transform: rotate(5deg) scale(1.03); }
  75%      { transform: rotate(-2deg) scale(1.01); }
}
.loot-reward-popup {
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-color);
  color: var(--accent-text);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  font-weight: var(--fw-bold);
  font-size: var(--text-sm);
  animation: popUpFade 2s ease forwards;
  white-space: nowrap;
  pointer-events: none;
}
@keyframes popUpFade {
  0%   { opacity: 0; transform: translateX(-50%) translateY(0); }
  20%  { opacity: 1; }
  80%  { opacity: 1; transform: translateX(-50%) translateY(-20px); }
  100% { opacity: 0; transform: translateX(-50%) translateY(-30px); }
}

/* ═══════════════════════════════════════════════════════════
   MASCOT (CARI) WIDGET
   ═══════════════════════════════════════════════════════════ */
.mascot-widget {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  text-align: center;
}
.mascot-image {
  width: 120px;
  height: 120px;
  object-fit: contain;
  animation: float 3s ease-in-out infinite;
  filter: drop-shadow(0 8px 16px var(--accent-glow));
  cursor: pointer;
  transition: var(--transition-spring);
}
.mascot-image:hover { transform: scale(1.1); animation-play-state: paused; }
.mascot-name {
  font-size: var(--text-sm);
  font-weight: var(--fw-bold);
  color: var(--text-main);
}
.mascot-stage-label {
  font-size: var(--text-xs);
  color: var(--accent-color);
  font-weight: var(--fw-semibold);
}
.mascot-xp-bar {
  width: 100%;
  max-width: 160px;
}

/* ═══════════════════════════════════════════════════════════
   LEADERBOARD
   ═══════════════════════════════════════════════════════════ */
.leaderboard-list { list-style: none; padding: 0; margin: 0; }
.leaderboard-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-apple);
  margin-bottom: var(--space-2);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: var(--transition-fast);
}
.leaderboard-item:hover { background: var(--bg-secondary); }
.leaderboard-rank {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--fw-bold);
  font-size: var(--text-sm);
  flex-shrink: 0;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
}
.leaderboard-item:nth-child(1) .leaderboard-rank { background: rgba(255,215,0,0.2); border-color: var(--achievement-gold); color: var(--achievement-gold); }
.leaderboard-item:nth-child(2) .leaderboard-rank { background: rgba(192,192,192,0.2); border-color: #C0C0C0; color: #C0C0C0; }
.leaderboard-item:nth-child(3) .leaderboard-rank { background: rgba(205,127,50,0.2); border-color: #CD7F32; color: #CD7F32; }
.leaderboard-username { flex: 1; font-weight: var(--fw-medium); color: var(--text-main); min-width: 0; }
.leaderboard-score { font-weight: var(--fw-bold); color: var(--accent-color); white-space: nowrap; }

/* ═══════════════════════════════════════════════════════════
   TOAST NOTIFICATIONS
   ═══════════════════════════════════════════════════════════ */
#toast-container {
  position: fixed;
  top: 80px;
  right: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 320px;
  width: calc(100vw - 2rem);
}
.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--panel-overlay);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-apple);
  box-shadow: var(--glass-shadow-lg);
  animation: slideDown 0.3s var(--ease-spring), fadeOut 0.3s ease 3.7s forwards;
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--text-main);
}
.toast.toast-success { border-left: 3px solid var(--color-success); }
.toast.toast-error   { border-left: 3px solid var(--color-error); }
.toast.toast-warning { border-left: 3px solid var(--color-warning); }
.toast.toast-info    { border-left: 3px solid var(--accent-color); }
.toast .toast-icon { font-size: 1.2rem; flex-shrink: 0; }
@keyframes fadeOut {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(20px); }
}

/* ═══════════════════════════════════════════════════════════
   PREMIUM LOCK / GATED FEATURES
   ═══════════════════════════════════════════════════════════ */
.premium-locked {
  position: relative;
  pointer-events: none;
  user-select: none;
}
.premium-locked::after {
  content: '👑 Premium';
  position: absolute;
  inset: 0;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--fw-bold);
  color: var(--coin-color);
  border-radius: inherit;
  pointer-events: all;
  cursor: pointer;
  font-size: var(--text-sm);
}
.gated-feature { pointer-events: none; }

/* ═══════════════════════════════════════════════════════════
   TABS
   ═══════════════════════════════════════════════════════════ */
.tab-bar {
  display: flex;
  gap: var(--space-1);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-pill);
  padding: 4px;
  width: fit-content;
}
.tab-btn {
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  white-space: nowrap;
}
.tab-btn.active {
  background: var(--accent-color);
  color: var(--accent-text);
  box-shadow: 0 2px 12px var(--accent-glow);
}
.tab-btn:hover:not(.active) { color: var(--text-main); background: var(--bg-secondary); }

/* Tab panels */
.tab-panel { display: none; animation: fadeIn 0.2s ease; }
.tab-panel.active { display: block; }

/* ═══════════════════════════════════════════════════════════
   OWNER / ADMIN BADGE DISPLAY
   ═══════════════════════════════════════════════════════════ */
.owner-crown {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px 8px;
  background: linear-gradient(135deg, rgba(255,215,0,0.2), rgba(255,165,0,0.15));
  border: 1px solid var(--achievement-gold);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  color: var(--achievement-gold);
}

/* ═══════════════════════════════════════════════════════════
   POMODORO TIMER
   ═══════════════════════════════════════════════════════════ */
.pomodoro-display {
  font-size: var(--text-hero);
  font-weight: var(--fw-heavy);
  font-family: var(--font-family-mono);
  color: var(--text-main);
  text-align: center;
  letter-spacing: -0.03em;
  line-height: 1;
}
.pomodoro-phase-label {
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.pomodoro-phase-label.focus   { color: var(--accent-color); }
.pomodoro-phase-label.break   { color: var(--color-success); }
.pomodoro-phase-label.long-break { color: var(--diamond-color); }
.pomodoro-ring {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto;
}
.pomodoro-ring svg { transform: rotate(-90deg); }
.pomodoro-ring-track { stroke: var(--glass-border); fill: none; }
.pomodoro-ring-fill { stroke: var(--accent-color); fill: none; stroke-linecap: round; transition: stroke-dashoffset 1s linear; }
.pomodoro-ring-text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* ═══════════════════════════════════════════════════════════
   SUBJECT CARDS
   ═══════════════════════════════════════════════════════════ */
.subject-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-apple);
  text-decoration: none;
  transition: var(--transition-smooth);
  cursor: pointer;
}
.subject-card:hover {
  border-color: var(--accent-color);
  transform: translateX(4px);
  background: var(--bg-secondary);
}
.subject-card .subject-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-apple);
  background: var(--accent-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}
.subject-card .subject-name {
  font-size: var(--text-base);
  font-weight: var(--fw-semibold);
  color: var(--text-main);
}
.subject-card .subject-progress {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: 2px;
}

/* ═══════════════════════════════════════════════════════════
   FLASHCARD
   ═══════════════════════════════════════════════════════════ */
.flashcard-scene {
  perspective: 1000px;
  width: 100%;
  max-width: 480px;
  height: 280px;
  cursor: pointer;
}
.flashcard-inner {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.5s var(--ease-smooth);
}
.flashcard-scene.flipped .flashcard-inner {
  transform: rotateY(180deg);
}
.flashcard-front, .flashcard-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-8);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow-lg);
}
.flashcard-back {
  transform: rotateY(180deg);
  background: var(--accent-subtle);
  border-color: var(--accent-color);
}
.flashcard-label {
  font-size: var(--text-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}
.flashcard-text {
  font-size: var(--text-lg);
  font-weight: var(--fw-medium);
  color: var(--text-main);
  line-height: 1.5;
}

/* SRS Rating Buttons */
.srs-rating-row {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  flex-wrap: wrap;
}
.srs-btn {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
}
.srs-btn-0 { background: rgba(255,59,48,0.2);   color: var(--color-error); }
.srs-btn-1 { background: rgba(255,149,0,0.2);   color: var(--color-warning); }
.srs-btn-2 { background: rgba(255,204,0,0.2);   color: #FFCC00; }
.srs-btn-3 { background: rgba(52,199,89,0.2);   color: var(--color-success); }
.srs-btn-4 { background: rgba(0,113,227,0.2);   color: var(--color-info); }
.srs-btn-5 { background: rgba(155,89,182,0.2);  color: var(--xp-color); }

/* ═══════════════════════════════════════════════════════════
   AD MODAL (LAUNCH)
   ═══════════════════════════════════════════════════════════ */
.ad-modal-box {
  background: var(--panel-overlay);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  max-width: 420px;
  width: 100%;
  text-align: center;
  box-shadow: var(--glass-shadow-xl);
  animation: scaleIn 0.35s var(--ease-bounce);
  position: relative;
}
.ad-logo {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-xl);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  box-shadow: 0 8px 24px var(--accent-glow);
}
.ad-social-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin: var(--space-6) 0;
}
.ad-social-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-apple);
  text-decoration: none;
  color: var(--text-main);
  font-weight: var(--fw-medium);
  font-size: var(--text-sm);
  transition: var(--transition-fast);
}
.ad-social-link:hover { border-color: var(--accent-color); background: var(--accent-subtle); }

/* ═══════════════════════════════════════════════════════════
   PERIODIC TABLE MODAL
   ═══════════════════════════════════════════════════════════ */
.element-card {
  width: 52px;
  height: 52px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
  border: 1px solid transparent;
  font-size: 0.6rem;
  position: relative;
  flex-shrink: 0;
}
.element-card:hover {
  transform: scale(1.15);
  z-index: 10;
  border-color: var(--text-main);
  box-shadow: var(--glass-shadow-lg);
}
.element-symbol { font-size: 1rem; font-weight: var(--fw-bold); line-height: 1; }
.element-number { font-size: 0.55rem; color: rgba(255,255,255,0.7); }
.element-name-short { font-size: 0.5rem; color: rgba(255,255,255,0.8); }

/* ═══════════════════════════════════════════════════════════
   WHITEBOARD
   ═══════════════════════════════════════════════════════════ */
#whiteboard-canvas {
  touch-action: none;
  cursor: crosshair;
  border-radius: var(--radius-apple);
  border: 1px solid var(--glass-border);
  background: white;
  display: block;
  width: 100%;
}
.whiteboard-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding: var(--space-3);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-apple);
}
.color-swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition-fast);
  flex-shrink: 0;
}
.color-swatch.selected, .color-swatch:hover { border-color: var(--text-main); transform: scale(1.1); }
.brush-size-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}
.brush-size-btn.selected { border-color: var(--accent-color); background: var(--accent-subtle); }

/* ═══════════════════════════════════════════════════════════
   Q&A BOARD
   ═══════════════════════════════════════════════════════════ */
.qa-post {
  padding: var(--space-4);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-apple);
  margin-bottom: var(--space-3);
  transition: var(--transition-fast);
}
.qa-post:hover { background: var(--bg-secondary); }
.qa-post-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}
.qa-anon-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-style: italic;
}
.qa-timestamp {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-left: auto;
}
.qa-post-body {
  font-size: var(--text-base);
  color: var(--text-main);
  line-height: 1.6;
}
.qa-post-actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

/* ═══════════════════════════════════════════════════════════
   SECTION HEADERS (Dashboard)
   ═══════════════════════════════════════════════════════════ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}
.section-title {
  font-size: var(--text-xl);
  font-weight: var(--fw-bold);
  color: var(--text-main);
}
.section-sub {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: 2px;
}
.section-action {
  font-size: var(--text-sm);
  color: var(--accent-color);
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition: var(--transition-fast);
}
.section-action:hover { opacity: 0.7; }

/* ═══════════════════════════════════════════════════════════
   EMPTY STATE
   ═══════════════════════════════════════════════════════════ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-12) var(--space-4);
  gap: var(--space-3);
}
.empty-state .empty-icon { font-size: 3rem; opacity: 0.4; }
.empty-state .empty-title { font-size: var(--text-lg); font-weight: var(--fw-bold); color: var(--text-main); }
.empty-state .empty-desc { font-size: var(--text-sm); color: var(--text-muted); max-width: 300px; }