/* 彰基糖友島 - 主樣式表 (2D可愛卡通風格，豐富又明亮，支援三組底色與完整 RWD) */

:root {
  --font-family: 'Huninn', 'Noto Sans TC', system-ui, -apple-system, sans-serif;
  --primary: #059669;
  --primary-hover: #047857;
  --accent: #f43f5e;
  --accent-hover: #e11d48;

  /* Theme Defaults (Sunny Mint / Bright Turquoise Lagoon) */
  --bg: #dcfce7;
  --surface: #ffffff;
  --surface-alt: #f0fdf4;
  --ink: #064e3b;
  --muted: #047857;
  --line: #a7f3d0;
  --shadow: 0 12px 28px -4px rgba(5, 150, 105, 0.16), 0 6px 10px -4px rgba(5, 150, 105, 0.1);
  --header-bg: rgba(255, 255, 255, 0.95);
  --dock-bg: rgba(255, 255, 255, 0.96);
}

[data-theme="paper"] {
  --bg: #f8f4ea;
  --surface: #ffffff;
  --surface-alt: #f4eee1;
  --ink: #332b20;
  --muted: #786c5c;
  --line: #e3d9c7;
  --shadow: 0 10px 25px -5px rgba(90, 75, 50, 0.12), 0 8px 10px -6px rgba(90, 75, 50, 0.08);
  --header-bg: rgba(255, 255, 255, 0.9);
  --dock-bg: rgba(255, 255, 255, 0.94);
}

[data-theme="ink"] {
  --bg: #1e2426;
  --surface: #283134;
  --surface-alt: #1f2729;
  --ink: #e5ece9;
  --muted: #8ea39c;
  --line: #3b474a;
  --shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.5);
  --header-bg: rgba(40, 49, 52, 0.9);
  --dock-bg: rgba(40, 49, 52, 0.94);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  font-family: var(--font-family);
  background-color: var(--bg);
  color: var(--ink);
  overflow: hidden;
  overflow-x: hidden;
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: 100vw;
  max-height: 100vh;
  user-select: none;
  transition: background-color 0.4s ease, color 0.3s ease;
}

/* 3D Viewport */
#canvas-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

#canvas-container canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Header Bar */
.app-header {
  position: absolute;
  top: 16px;
  left: 20px;
  right: 20px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
}

.brand-card {
  pointer-events: auto;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  padding: 10px 18px;
  border-radius: 20px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  font-size: 26px;
  line-height: 1;
}

.brand-title {
  font-size: 18px;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: 0.5px;
}

.brand-tagline {
  font-size: 11px;
  color: var(--muted);
  font-weight: 500;
}

.header-right {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.live-clock-badge {
  background: var(--header-bg);
  border: 1px solid var(--line);
  padding: 8px 14px;
  border-radius: 16px;
  font-size: 12px;
  color: var(--ink);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 6px;
}

.badge-time {
  background: var(--primary);
  color: #ffffff;
  padding: 2px 7px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: bold;
}

/* Floating 3D Island Labels (2D Cartoon Cute Badge Style) */
.floating-island-tag {
  position: fixed;
  z-index: 5;
  transform: translate(-50%, -100%);
  cursor: pointer;
  pointer-events: auto;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  will-change: transform, left, top;
}

.floating-island-tag:hover {
  transform: translate(-50%, -115%) scale(1.08);
}

.tag-inner {
  background: #ffffff;
  border: 2.5px solid var(--primary);
  border-radius: 24px;
  padding: 6px 14px;
  box-shadow: 0 8px 18px rgba(5, 150, 105, 0.18);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.tag-number {
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  font-weight: 900;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tag-name {
  font-size: 13px;
  font-weight: bold;
  color: var(--ink);
}

.tag-badge {
  font-size: 10px;
  background: var(--accent);
  color: #fff;
  padding: 2px 6px;
  border-radius: 10px;
  font-weight: bold;
}

.tag-pointer-down {
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 6px solid var(--primary);
  margin: 0 auto;
}

/* Collapsible Bottom Control Dock */
.bottom-dock-wrapper {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  width: auto;
  max-width: min(1380px, 98vw);
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
}

.dock-toggle-btn {
  pointer-events: auto;
  background: var(--dock-bg);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  font-weight: bold;
  padding: 4px 16px;
  border-radius: 12px 12px 0 0;
  cursor: pointer;
  margin-bottom: -1px;
  box-shadow: 0 -2px 6px rgba(0,0,0,0.03);
  transition: all 0.2s;
  white-space: nowrap;
}

.dock-toggle-btn:hover {
  color: var(--primary);
}

.bottom-dock {
  pointer-events: auto;
  background: var(--dock-bg);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: 24px;
  padding: 8px 16px;
  width: max-content;
  max-width: 98vw;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
}

.bottom-dock::-webkit-scrollbar {
  height: 4px;
}

.bottom-dock::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 4px;
}

.bottom-dock.collapsed {
  transform: translateY(115%);
  opacity: 0;
  pointer-events: none;
}

.dock-group {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  flex-wrap: nowrap;
  white-space: nowrap;
}

.dock-label {
  font-size: 12px;
  color: var(--muted);
  font-weight: bold;
  margin-right: 2px;
  white-space: nowrap;
  flex-shrink: 0;
}

.icon-btn {
  height: 38px;
  min-width: max-content;
  padding: 0 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-size: 13px;
  font-weight: bold;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  line-height: 1;
  transition: all 0.15s ease;
}

.icon-btn:hover {
  background: var(--surface-alt);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.16);
}

.icon-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

/* Theme Swatches in Dock */
.theme-swatches {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--surface);
  padding: 3px 5px;
  border-radius: 14px;
  border: 1px solid var(--line);
  flex-shrink: 0;
  white-space: nowrap;
}

.theme-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 10px;
  border: none;
  background: transparent;
  font-size: 12px;
  color: var(--ink);
  font-weight: bold;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.15s;
}

.theme-btn.active {
  background: var(--primary);
  color: #fff;
}

.swatch-circle {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.15);
}

/* Progress bar inside dock */
.progress-container {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 140px;
}

.progress-header {
  font-size: 11px;
  font-weight: bold;
  color: var(--muted);
}

.progress-track {
  width: 100%;
  height: 7px;
  background: var(--line);
  border-radius: 10px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--primary);
  width: 0%;
  transition: width 0.4s ease;
}

/* Drawer Component (Side Drawer on Desktop, Bottom Sheet on Mobile) */
.drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 440px;
  max-width: 90vw;
  height: 100vh;
  background: var(--surface);
  border-left: 1px solid var(--line);
  box-shadow: -10px 0 35px rgba(0, 0, 0, 0.1);
  z-index: 100;
  transform: translateX(105%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.drawer.open {
  transform: translateX(0);
}

.drawer-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drawer-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.btn-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--surface-alt);
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: bold;
  transition: all 0.15s;
}

.btn-close:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  position: relative;
  z-index: 10;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: 24px;
  width: 90%;
  max-width: 620px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.96);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-card.modal-large {
  max-width: 780px;
}

.modal-backdrop.open .modal-card {
  transform: scale(1);
}

.btn-modal-close {
  background: transparent;
  border: none;
  font-size: 16px;
  cursor: pointer;
  color: var(--muted);
  padding: 4px 8px;
  border-radius: 8px;
  transition: all 0.15s;
}

.btn-modal-close:hover {
  background: var(--surface-alt);
  color: var(--ink);
}

.modal-header {
  padding: 16px 22px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  padding: 22px;
  overflow-y: auto;
}

/* Toast Notification */
.app-toast {
  position: fixed;
  bottom: 84px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink);
  color: var(--surface);
  padding: 10px 22px;
  border-radius: 24px;
  font-size: 13px;
  font-weight: bold;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  z-index: 300;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.app-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Loader Screen */
.app-loader {
  position: fixed;
  inset: 0;
  background: #e7f5f0;
  z-index: 500;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  transition: opacity 0.5s ease;
}

.app-loader.fade-out {
  opacity: 0;
  pointer-events: none;
}

.loader-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid #cde7dd;
  border-top-color: #2a8a74;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Utility Pills & Badges */
.category-pill {
  font-size: 11px;
  font-weight: bold;
  background: rgba(42, 138, 116, 0.12);
  color: var(--primary);
  padding: 4px 10px;
  border-radius: 12px;
}

.island-order-badge {
  font-size: 11px;
  font-weight: 800;
  color: var(--muted);
}

.text-primary-heading {
  color: var(--primary);
}

/* Tabs */
.tab-btn {
  padding: 6px 12px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: bold;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.15s;
}

.tab-btn.active {
  background: var(--surface-alt);
  color: var(--primary);
  border-color: var(--line);
}

/* Mobile Responsive Adjustments (375px ~ 768px) */
@media (max-width: 768px) {
  .app-header {
    top: 10px;
    left: 12px;
    right: 12px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .brand-card {
    padding: 8px 12px;
    border-radius: 16px;
  }

  .brand-title {
    font-size: 16px;
  }

  .brand-tagline {
    display: none;
  }

  .live-clock-badge {
    padding: 6px 10px;
    font-size: 11px;
  }

  /* Bottom sheet drawer on mobile */
  .drawer {
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-width: 100vw;
    height: 75vh;
    border-left: none;
    border-top: 1px solid var(--line);
    border-radius: 24px 24px 0 0;
    transform: translateY(105%);
  }

  .drawer.open {
    transform: translateY(0);
  }

  /* Compact dock on mobile - strictly horizontal, smoothly scrollable */
  .bottom-dock {
    padding: 6px 12px;
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 8px;
    border-radius: 20px;
    width: max-content;
    max-width: 95vw;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .progress-container {
    display: flex;
    min-width: 100px;
    flex-shrink: 0;
  }

  .icon-btn {
    height: 40px;
    padding: 0 12px;
    font-size: 12px;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .theme-btn {
    padding: 5px 8px;
    white-space: nowrap;
    flex-shrink: 0;
  }
}

/* Card & Content UI Components */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px 16px;
  margin-bottom: 12px;
  transition: all 0.2s ease;
}

.card:hover {
  border-color: var(--primary);
}

.landmark-banner {
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  margin-bottom: 16px;
}

.point-tag {
  display: inline-block;
  background: rgba(42, 138, 116, 0.12);
  color: var(--primary);
  font-size: 11px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 10px;
  margin-bottom: 4px;
}

.section-tabs {
  display: flex;
  gap: 6px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
  margin-bottom: 16px;
  overflow-x: auto;
}

.tab-btn {
  padding: 6px 14px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: bold;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
}

.tab-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
}

.tab-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.literature-card {
  cursor: pointer;
  position: relative;
}

.literature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.badge-status {
  font-size: 11px;
  font-weight: bold;
  padding: 2px 8px;
  border-radius: 10px;
}

.btn-action {
  cursor: pointer;
  border: none;
  font-family: inherit;
  transition: all 0.15s ease;
}

.btn-action:active {
  transform: scale(0.98);
}

.stat-card {
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px;
  text-align: center;
}

.quiz-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  cursor: pointer;
  margin-bottom: 6px;
  font-size: 13px;
  transition: all 0.15s;
}

.quiz-option:hover {
  background: var(--surface-alt);
  border-color: var(--primary);
}

.quiz-option input[type="radio"]:checked + .opt-indicator {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.opt-indicator {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: bold;
  color: var(--muted);
}

.quick-pill {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.15s;
}

.quick-pill:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--surface-alt);
}

.tab-pane {
  display: block;
}

.tab-pane.hidden,
.hidden {
  display: none !important;
}

/* Common Layout & Spacing Helpers for Standalone Mode */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.flex-1 { flex: 1 1 0%; }
.gap-1 { gap: 4px; }
.gap-1\.5 { gap: 6px; }
.gap-2 { gap: 8px; }
.gap-2\.5 { gap: 10px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }

.mb-1 { margin-bottom: 4px; }
.mb-1\.5 { margin-bottom: 6px; }
.mb-2 { margin-bottom: 8px; }
.mb-2\.5 { margin-bottom: 10px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mb-5 { margin-bottom: 20px; }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.my-3 { margin-top: 12px; margin-bottom: 12px; }

.p-2 { padding: 8px; }
.p-3 { padding: 12px; }
.p-3\.5 { padding: 14px; }
.p-4 { padding: 16px; }
.p-6 { padding: 24px; }
.px-2 { padding-left: 8px; padding-right: 8px; }
.px-3 { padding-left: 12px; padding-right: 12px; }
.px-4 { padding-left: 16px; padding-right: 16px; }
.px-5 { padding-left: 20px; padding-right: 20px; }
.py-0\.5 { padding-top: 2px; padding-bottom: 2px; }
.py-1 { padding-top: 4px; padding-bottom: 4px; }
.py-1\.5 { padding-top: 6px; padding-bottom: 6px; }
.py-2 { padding-top: 8px; padding-bottom: 8px; }
.py-2\.5 { padding-top: 10px; padding-bottom: 10px; }
.pt-2 { padding-top: 8px; }
.pt-3 { padding-top: 12px; }

.space-y-1 > * + * { margin-top: 4px; }
.space-y-1\.5 > * + * { margin-top: 6px; }
.space-y-2 > * + * { margin-top: 8px; }
.space-y-2\.5 > * + * { margin-top: 10px; }
.space-y-3 > * + * { margin-top: 12px; }
.space-y-4 > * + * { margin-top: 16px; }

.rounded-lg { border-radius: 8px; }
.rounded-xl { border-radius: 14px; }
.rounded-2xl { border-radius: 20px; }
.rounded-full { border-radius: 9999px; }

.border { border: 1px solid var(--line); }
.border-b { border-bottom: 1px solid var(--line); }
.border-t { border-top: 1px solid var(--line); }
.border-line { border-color: var(--line); }
.border-primary { border-color: var(--primary); }

.bg-surface { background-color: var(--surface); }
.bg-surface-alt { background-color: var(--surface-alt); }
.bg-primary { background-color: var(--primary); }
.bg-accent { background-color: var(--accent); }

.text-ink { color: var(--ink); }
.text-muted { color: var(--muted); }
.text-primary { color: var(--primary); }
.text-white { color: #ffffff; }

.text-\[10px\] { font-size: 10px; }
.text-\[11px\] { font-size: 11px; }
.text-xs { font-size: 12px; }
.text-sm { font-size: 14px; }
.text-base { font-size: 16px; }
.text-lg { font-size: 18px; }
.text-xl { font-size: 20px; }
.text-2xl { font-size: 24px; }
.text-3xl { font-size: 30px; }
.text-4xl { font-size: 36px; }
.text-5xl { font-size: 48px; }

.font-medium { font-weight: 500; }
.font-bold { font-weight: 700; }
.font-black { font-weight: 900; }
.font-mono { font-family: monospace; }
.leading-tight { line-height: 1.25; }
.leading-snug { line-height: 1.375; }
.leading-relaxed { line-height: 1.625; }
.text-center { text-align: center; }
.w-full { width: 100%; }
.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.sm\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }