* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  color-scheme: light;

  /* Ceramic Precision foundations */
  --porcelain-50: #fbfaf6;
  --porcelain-100: #f5f3ed;
  --porcelain-200: #ebe8df;
  --graphite-900: #19221e;
  --graphite-700: #405047;
  --graphite-500: #6c7871;
  --brand-jade: #3f7568;
  --brand-jade-strong: #2f6156;
  --brand-lime: #9cc84f;

  /* Brand palette */
  --brand-50: #f7faef;
  --brand-100: #eef4df;
  --brand-200: #dde9c1;
  --brand-300: #cad99c;
  --brand-400: #a9cf68;
  --brand-500: #3f7568;
  --brand-600: #2f6156;
  --brand-700: #244e46;
  --brand-800: #485f1a;
  --brand-900: #334214;

  /* Semantic surfaces */
  --surface-page: var(--porcelain-100);
  --surface-card: #fffefb;
  --surface-subtle: #eeeee8;
  --surface-elevated: #ffffff;

  /* Semantic text */
  --text-primary: var(--graphite-900);
  --text-secondary: var(--graphite-700);
  --text-tertiary: var(--graphite-500);

  /* Semantic lines */
  --line-soft: #dcded7;
  --line-strong: #bdc4bc;

  /* Interaction */
  --accent: var(--brand-500);
  --accent-hover: var(--brand-600);
  --accent-soft: #e8f1ed;
  --accent-soft-hover: #dceae4;
  --accent-contrast: #ffffff;
  --focus-ring: rgba(63, 117, 104, 0.24);

  /* Status */
  --success: #3d7a57;
  --success-hover: #326447;
  --success-bg: #e8f2ec;
  --success-border: #bfd5c7;
  --success-text: #2c5a40;

  --warning: #b07a1f;
  --warning-hover: #96661a;
  --warning-bg: #fbf4e3;
  --warning-border: #e7d09c;
  --warning-text: #835a14;

  --danger: #b6634f;
  --danger-hover: #9e5442;
  --danger-bg: #f7ece7;
  --danger-border: #e7c7bc;
  --danger-text: #8b4838;

  --info: #3f807b;
  --info-hover: #346a66;
  --info-bg: #e6f1f0;
  --info-border: #bad5d2;
  --info-text: #2b625d;

  /* Shadows and overlay */
  --overlay-bg: rgba(18, 22, 17, 0.48);
  --elevation-sm: 0 1px 2px rgba(25, 34, 30, 0.07);
  --elevation-md: 0 12px 32px rgba(25, 34, 30, 0.11);
  --elevation-lg: 0 24px 72px rgba(25, 34, 30, 0.16);
  --shadow-color: rgba(31, 42, 33, 0.08);
  --shadow-md: rgba(31, 42, 33, 0.12);
  --shadow-lg: rgba(31, 42, 33, 0.18);

  /* Controls and misc */
  --scrollbar-thumb: #bcc7b5;
  --input-bg: #ffffff;
  --input-border: #ced8c7;
  --badge-muted-bg: #edf1ea;
  --canvas-bg: #171c17;

  /* Viewer */
  --viewer-canvas-bg-light: #f1eee6;
  --viewer-canvas-bg-dark: #0f120f;
  --viewer-material-1: #e3d6bf;
  --viewer-material-2: #f1e5cb;
  --viewer-material-3: #d9d0c1;
  --viewer-material-4: #c8bda8;
  --viewer-material-5: #f5efe6;
  --clip-icon-bg-light: #fffdf8;
  --clip-icon-border-light: #ced8c7;
  --clip-icon-fg-light: #1f2a21;
  --clip-icon-active-bg-light: #eef4df;
  --clip-icon-active-border-light: #c7d8a4;
  --clip-icon-active-fg-light: #72972c;

  /* Legacy aliases */
  --primary: var(--accent);
  --primary-dark: var(--accent-hover);
  --bg: var(--surface-page);
  --card: var(--surface-card);
  --card-raised: var(--surface-elevated);
  --text: var(--text-primary);
  --text-muted: var(--text-secondary);
  --border: var(--line-soft);
  --bg-subtle: var(--surface-subtle);
  --bg-hover: color-mix(in srgb, var(--surface-subtle) 74%, var(--surface-card));
  --bg-active: var(--accent-soft);
  --bg-active-hover: var(--accent-soft-hover);
}

/* ===== 深色主題 ===== */
[data-theme="dark"] {
  color-scheme: dark;

  --brand-50: #1b2313;
  --brand-100: #26331b;
  --brand-200: #324526;
  --brand-300: #486436;
  --brand-400: #9dca4b;
  --brand-500: #8cb93d;
  --brand-600: #9dca4b;
  --brand-700: #b1d86b;
  --brand-800: #cae59a;
  --brand-900: #e7f4c7;

  --brand-jade: #78b6a5;
  --brand-jade-strong: #a0d2c3;
  --brand-lime: #a9d45d;

  --surface-page: #101512;
  --surface-card: #171d19;
  --surface-subtle: #202722;
  --surface-elevated: #222a25;

  --text-primary: #eef3e8;
  --text-secondary: #aab5a1;
  --text-tertiary: #869180;

  --line-soft: #313a2f;
  --line-strong: #465042;

  --accent: var(--brand-500);
  --accent-hover: var(--brand-400);
  --accent-soft: rgba(120, 182, 165, 0.15);
  --accent-soft-hover: rgba(120, 182, 165, 0.23);
  --accent-contrast: #0f130f;
  --focus-ring: rgba(157, 202, 75, 0.32);

  --success: #6eb98b;
  --success-hover: #81c79b;
  --success-bg: rgba(61, 122, 87, 0.22);
  --success-border: rgba(110, 185, 139, 0.34);
  --success-text: #c9e8d5;

  --warning: #e0b45a;
  --warning-hover: #ecc576;
  --warning-bg: rgba(176, 122, 31, 0.2);
  --warning-border: rgba(224, 180, 90, 0.34);
  --warning-text: #f2d9a2;

  --danger: #d88472;
  --danger-hover: #e59685;
  --danger-bg: rgba(182, 99, 79, 0.2);
  --danger-border: rgba(216, 132, 114, 0.36);
  --danger-text: #f0c0b3;

  --info: #7dbbb6;
  --info-hover: #92cbc6;
  --info-bg: rgba(63, 128, 123, 0.18);
  --info-border: rgba(125, 187, 182, 0.3);
  --info-text: #c6e5e2;

  --overlay-bg: rgba(8, 10, 8, 0.72);
  --elevation-sm: 0 1px 3px rgba(0, 0, 0, 0.34);
  --elevation-md: 0 10px 30px rgba(0, 0, 0, 0.42);
  --elevation-lg: 0 20px 60px rgba(0, 0, 0, 0.58);
  --shadow-color: rgba(0, 0, 0, 0.38);
  --shadow-md: rgba(0, 0, 0, 0.42);
  --shadow-lg: rgba(0, 0, 0, 0.58);

  --scrollbar-thumb: #495245;
  --input-bg: #141914;
  --input-border: #2f382d;
  --badge-muted-bg: #252c23;
  --canvas-bg: #0f120f;
}

html, body {
  font-family: Inter, -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100%;
  margin: 0;
}

/* 主容器 */
.app {
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 8px 12px;
  gap: 8px;
  max-width: 1920px;
  margin: 0 auto;
}

/* ===== 頂部工具列 ===== */
/*
 * 功能權限尚未載入時先隱藏受控導覽項目，避免未開放功能在
 * /api/features/access 回應前短暫出現。權限腳本會在完整套用結果後
 * 才加上 feature-access-ready，之後再交由後台的「隱藏模式在工具列」設定。
 */
html:not(.feature-access-ready) .main-nav [data-feature],
html:not(.feature-access-ready) .main-nav a[href="/geometry-dental-studio"],
html:not(.feature-access-ready) .main-nav a[href="/geometry-dental-studio.html"],
html:not(.feature-access-ready) .main-nav a[href="geometry-dental-studio"],
html:not(.feature-access-ready) .main-nav a[href="geometry-dental-studio.html"],
html:not(.feature-access-ready) .main-nav #navRecipeTakeout,
html:not(.feature-access-ready) .main-nav #navStaining,
html:not(.feature-access-ready) .main-nav #navDigitalTryOn {
  display: none !important;
}

.feature-toolbar-hidden {
  display: none !important;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--card);
  border-radius: 10px;
  padding: 12px 16px;
  box-shadow: var(--elevation-sm);
  flex-shrink: 0;
  position: relative;
  min-height: 60px;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.toolbar-title {
  font-size: 18px;
  font-weight: 700;
  white-space: nowrap;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

/* 牙齒模式工具列 - 標題和步驟居中 */
.teeth-toolbar {
  flex-wrap: wrap;
}

.toolbar-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.toolbar-center .toolbar-title {
  position: static;
  transform: none;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  justify-content: flex-end;
}

.steps-inline {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
}

.steps-inline .step {
  padding: 4px 8px;
  border-radius: 6px;
  color: var(--text-muted);
  transition: all 0.3s ease;
}

.steps-inline .step.active {
  background: var(--accent-soft);
  color: var(--primary);
  font-weight: 600;
  animation: stepPulse 2s ease-in-out infinite;
}

.steps-inline .step.done {
  background: var(--success-bg);
  color: var(--success);
  animation: stepComplete 0.5s ease-out;
}

@keyframes stepPulse {
  0%, 100% {
    box-shadow: 0 0 0 0 var(--focus-ring);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 0 6px transparent;
    transform: scale(1.05);
  }
}

@keyframes stepComplete {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.15);
  }
  100% {
    transform: scale(1);
  }
}

.step-sep {
  color: var(--border);
  font-size: 10px;
}

/* ===== 按鈕 ===== */
.btn {
  border: none;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.15s;
  background: var(--border);
  color: var(--text);
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
}

.btn.ghost {
  background: transparent;
  border: 1px solid var(--border);
}

.btn.ghost:hover:not(:disabled) {
  background: var(--bg-subtle);
}

.btn.danger {
  color: var(--danger);
  border-color: var(--danger-border);
}

.btn.sm {
  padding: 4px 8px;
  font-size: 11px;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ===== 主內容區 ===== */
.main-content {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 10px;
  min-height: 0;
}

/* ===== 左側面板 ===== */
.left-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
}

/* 上方工作區：上傳 + Canvas */
.workspace-area {
  flex: 1;
  display: flex;
  gap: 8px;
  min-height: 0;
  overflow: hidden;
}

/* 圖片列表面板 */
.image-list-panel {
  width: 100px;
  background: var(--card);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

/* 上傳區域 */
.upload-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 12px 8px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  background: linear-gradient(135deg, var(--surface-subtle), var(--surface-page));
  transition: all 0.2s;
}

.upload-zone:hover {
  background: linear-gradient(135deg, var(--accent-soft), var(--surface-subtle));
}

.upload-zone input { display: none; }

.upload-icon {
  font-size: 24px;
}

.upload-text {
  font-size: 11px;
  font-weight: 600;
  color: var(--primary);
}

.image-list-header {
  padding: 8px;
  font-size: 10px;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.image-count {
  background: var(--primary);
  color: #fff;
  font-size: 9px;
  padding: 1px 5px;
  border-radius: 8px;
  min-width: 16px;
  text-align: center;
}

.image-list {
  flex: 1 1 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.image-list-empty {
  color: var(--text-muted);
  font-size: 10px;
  text-align: center;
  padding: 15px 5px;
}

.image-thumb {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.15s;
  position: relative;
  background: var(--canvas-bg);
  flex-shrink: 0;
}

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

.image-thumb.active {
  border-color: var(--success);
  box-shadow: 0 0 0 2px rgba(16,185,129,0.3);
}

.image-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-thumb .thumb-delete {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(239,68,68,0.9);
  color: #fff;
  border: none;
  font-size: 9px;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
}

.image-thumb:hover .thumb-delete {
  display: flex;
}

.image-thumb.uncropped {
  border-color: var(--warning);
}

.image-thumb .crop-badge {
  position: absolute;
  bottom: 2px;
  left: 2px;
  font-size: 9px;
  background: rgba(245,158,11,0.9);
  padding: 1px 3px;
  border-radius: 3px;
}

/* Canvas 區域 */
.canvas-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.canvas-wrap {
  flex: 1;
  position: relative;
  background: var(--canvas-bg);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid #334155;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

#imageCanvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  cursor: crosshair;
}

.canvas-hint {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(15, 23, 42, 0.9);
  color: #94a3b8;
  pointer-events: none;
}

.canvas-hint .hint-icon {
  font-size: 36px;
}

/* Canvas 顏色提示 */
.canvas-color-tip {
  position: absolute;
  background: rgba(0,0,0,0.9);
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 12px;
  font-family: monospace;
  pointer-events: none;
  z-index: 100;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
  display: none;
  align-items: center;
  gap: 10px;
}

.canvas-color-tip.visible {
  display: flex;
}

.canvas-color-tip .cct-color {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  border: 2px solid rgba(255,255,255,0.3);
  flex-shrink: 0;
}

.canvas-color-tip .cct-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.canvas-color-tip .cct-hex {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
}

.canvas-color-tip .cct-lch {
  font-size: 10px;
  color: #94a3b8;
}

/* ===== 下方區域 ===== */
.bottom-area {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* 操作列 */
.action-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--card);
  border-radius: 10px;
  padding: 8px 12px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.canvas-status {
  font-size: 11px;
  color: var(--text-muted);
  text-align: left;
  min-height: 14px;
  flex: 1;
}

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

/* ROI 模式選擇器 */
.roi-mode-selector {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
}

.mode-btns {
  display: flex;
  gap: 4px;
  background: var(--bg);
  padding: 3px;
  border-radius: 6px;
}

.mode-btn {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all 0.15s;
}

.mode-btn:hover {
  background: var(--card);
  color: var(--primary);
}

.mode-btn.active {
  background: var(--primary);
  color: var(--accent-contrast);
  box-shadow: 0 2px 6px var(--focus-ring);
}

.mode-btn svg {
  width: 18px;
  height: 18px;
}

.grid-ctrl {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
}

.grid-ctrl input[type="range"] {
  width: 70px;
  accent-color: var(--primary);
}

.grid-val {
  font-weight: 600;
  color: var(--primary);
  min-width: 32px;
}

/* 牙位選擇盒子 */
.tooth-box {
  background: var(--card);
  border-radius: 10px;
  padding: 8px 12px 10px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.tooth-box-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.tooth-title {
  font-size: 13px;
  font-weight: 600;
}

.tooth-hint {
  font-size: 11px;
  color: var(--text-muted);
  flex: 1;
}

.tooth-hint .hint-tip {
  font-size: 10px;
  color: #94a3b8;
  background: #e2e8f0;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
}

.legend {
  display: flex;
  gap: 8px;
}

.lg {
  display: flex;
  align-items: center;
  gap: 3px;
  font-size: 10px;
  color: var(--text-muted);
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.dot.gray { background: #d1d5db; }
.dot.green { background: #34d399; }
.dot.blue { background: var(--info); }

.tooth-grid {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.jaw {
  display: flex;
  align-items: center;
  gap: 6px;
}

.jaw-label {
  font-size: 10px;
  color: var(--text-muted);
  width: 28px;
  flex-shrink: 0;
}

.jaw-sep {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin: 2px 0;
}

.tooth-row {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(8, 1fr) 10px repeat(8, 1fr);
  gap: 2px;
}

.tooth-spacer {
  width: 100%;
}

.tooth-btn {
  border: 1px solid var(--border);
  background: var(--bg-subtle);
  border-radius: 4px;
  padding: 3px 1px 2px;
  text-align: center;
  font-weight: 600;
  font-size: 9px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
  min-width: 0;
  position: relative;
}

.tooth-btn:hover {
  border-color: var(--primary);
  background: var(--accent-soft);
}

.tooth-btn.no-data { color: #9ca3af; }

.tooth-btn.has-data {
  color: #065f46;
  background: #ecfdf5;
  border-color: #a7f3d0;
}

.tooth-btn.has-data-other {
  color: var(--info-text);
  background: var(--info-bg);
  border-color: var(--info-border);
}

.tooth-btn.has-data-other::after {
  content: '↗';
  position: absolute;
  top: 0px;
  right: 1px;
  font-size: 7px;
  color: var(--info);
}

.tooth-btn.active {
  box-shadow: 0 0 0 2px var(--primary);
  border-color: var(--primary);
  background: var(--accent-soft);
  color: var(--primary);
}

.tooth-btn .tooth-id {
  font-size: 9px;
  font-weight: 600;
  line-height: 1;
}

.tooth-btn .color-chip {
  width: 100%;
  height: 4px;
  border-radius: 2px;
  margin-top: 2px;
  background: var(--border);
}

/* CIELAB 色彩方塊顯示 */
.tooth-btn .lch-chips {
  display: none;
  gap: 1px;
  margin-top: 2px;
  justify-content: center;
  height: 10px;
}

/* 有資料時直接顯示 Lab 方塊 */
.tooth-btn.has-data .lch-chips,
.tooth-btn.has-data-other .lch-chips,
.tooth-btn .lch-chips.visible {
  display: flex;
}

.tooth-btn .lch-chip {
  font-size: 6px;
  font-weight: 600;
  padding: 1px 2px;
  border-radius: 2px;
  line-height: 1;
  background: #f3f4f6;
  color: #fff;
  min-width: 12px;
  text-align: center;
  text-shadow: 0 0 2px rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.3);
}

/* 未建檔文字顯示 */
.tooth-btn .no-data-text {
  font-size: 6px;
  color: #9ca3af;
  margin-top: 2px;
  line-height: 1;
  height: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 有資料時隱藏「未建檔」文字 */
.tooth-btn.has-data .no-data-text,
.tooth-btn.has-data-other .no-data-text {
  display: none;
}

/* ===== 右側資訊面板 ===== */
.right-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
}

.preview-box, .detail-box {
  background: var(--card);
  border-radius: 10px;
  padding: 10px 12px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.box-header {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* 顏色預覽 */
.color-preview {
  height: 180px;
  border-radius: 8px;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  display: flex;
  flex-direction: column;
  padding: 12px;
  gap: 8px;
  justify-content: center;
  align-items: center;
}

.color-preview-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex: 1;
  width: 100%;
}

.preview-empty {
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
}

.tooth-shape {
  width: 60px;
  height: 90px;
  border-radius: 42% 42% 48% 48% / 30% 30% 55% 55%;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0,0,0,0.3);
  position: relative;
  flex-shrink: 0;
  cursor: crosshair;
}

.tooth-shape canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.tooth-tooltip {
  position: fixed;
  background: rgba(0,0,0,0.85);
  color: #fff;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-family: monospace;
  pointer-events: none;
  z-index: 10000;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  display: none;
}

.tooth-tooltip.visible {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tooth-tooltip .tt-color {
  width: 18px;
  height: 18px;
  border-radius: 3px;
  border: 1px solid rgba(255,255,255,0.3);
}

.tooth-tooltip .tt-lch {
  font-size: 10px;
  color: #94a3b8;
  margin-left: 4px;
}

.tooth-shape .tooth-overlay {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: 
    radial-gradient(ellipse 50% 30% at 30% 15%, rgba(255,255,255,0.2) 0%, transparent 70%),
    linear-gradient(to top, rgba(255,255,255,0.08) 0%, transparent 15%),
    linear-gradient(90deg, rgba(0,0,0,0.08) 0%, transparent 20%, transparent 80%, rgba(0,0,0,0.08) 100%);
}

.preview-colors {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.swatch-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.swatch-avg {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.preview-colors .color-swatch {
  width: 20px;
  height: 20px;
  border-radius: 3px;
  border: 1px solid rgba(255,255,255,0.2);
  cursor: pointer;
  transition: transform 0.15s;
}

.preview-colors .color-swatch:hover {
  transform: scale(1.2);
  z-index: 1;
}

.preview-colors .color-swatch.avg {
  width: 24px;
  height: 24px;
}

.preview-colors .color-label {
  font-size: 8px;
  color: #94a3b8;
  text-align: center;
}

.preview-colors .color-lch {
  font-size: 8px;
  color: #64748b;
  text-align: center;
  margin-top: 2px;
}

.preview-legend {
  font-size: 10px;
  color: #94a3b8;
  text-align: center;
  padding: 4px 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  margin-top: auto;
  flex-shrink: 0;
}

/* 詳情 */
.detail-box {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.detail-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 11px;
}

.detail-empty {
  text-align: center;
  color: var(--text-muted);
  padding: 10px 0;
}

.detail-section {
  font-size: 10px;
  color: var(--text-muted);
  padding: 3px 0 1px;
  margin-top: 3px;
  border-top: 1px solid var(--border);
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 6px;
  border-radius: 4px;
  background: var(--bg-subtle);
  flex-wrap: wrap;
  gap: 4px;
}

.detail-row strong {
  color: var(--text);
  font-weight: 500;
}

.detail-lch {
  font-size: 9px;
  color: #64748b;
  font-family: monospace;
  margin-left: auto;
  padding-left: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 5px;
  border-radius: 3px;
  background: #f1f5f9;
  font-size: 10px;
}

.color-dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  border: 1px solid rgba(0,0,0,0.1);
}

/* ===== 裁切彈窗 ===== */
.crop-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 20px;
}

.crop-modal.hidden { display: none; }

.crop-dialog {
  width: min(1100px, 95vw);
  max-height: 90vh;
  background: #1e293b;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.crop-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #f1f5f9;
  gap: 16px;
}

.crop-title h3 {
  margin: 0 0 4px;
  font-size: 16px;
}

.crop-tip {
  margin: 0;
  font-size: 12px;
  color: #94a3b8;
}

/* 裁切導航 */
.crop-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  justify-content: center;
}

.crop-nav .btn {
  background: #334155;
  color: #f1f5f9;
  border: 1px solid #475569;
  padding: 6px 14px;
  font-size: 12px;
}

.crop-nav .btn:hover:not(:disabled) {
  background: #475569;
}

.crop-nav .btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.crop-page-info {
  font-size: 13px;
  color: #94a3b8;
  min-width: 100px;
  text-align: center;
  font-weight: 500;
}

/* 裁切底部 */
.crop-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 8px;
  border-top: 1px solid #334155;
}

.crop-image-name {
  font-size: 12px;
  color: #94a3b8;
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.crop-status {
  font-size: 12px;
  color: #10b981;
  font-weight: 500;
}

.crop-canvas-wrap {
  position: relative;
  background: #0f172a;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid #334155;
}

#cropCanvas {
  display: block;
  max-width: 100%;
  max-height: 65vh;
}

.crop-hint {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #94a3b8;
  background: rgba(0,0,0,0.5);
  pointer-events: none;
  font-size: 14px;
}

.crop-hint .hint-icon {
  font-size: 36px;
}

/* 按鈕 (相容) */
button.ghost {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  color: var(--text);
}

button.ghost:hover {
  background: var(--bg-subtle);
}

button.danger {
  color: var(--danger);
  border-color: var(--danger-border);
}

/* ===== 模式切換 ===== */
.hidden {
  display: none !important;
}

.patient-mode,
.teeth-mode {
  height: 100vh;
}

/* ===== 病患管理介面 ===== */
.mode-badge {
  background: linear-gradient(135deg, var(--primary), var(--info));
  color: #fff;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.patient-main {
  flex: 1;
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 16px;
  min-height: 0;
  padding: 8px 0;
}

/* 病患列表面板 */
.patient-list-panel {
  background: var(--card);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

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

.panel-header h2 {
  font-size: 16px;
  font-weight: 600;
}

.search-box {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.search-box input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.patient-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.list-empty {
  text-align: center;
  color: var(--text-muted);
  padding: 40px 20px;
  font-size: 13px;
}

/* 病患卡片 */
.patient-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s;
  border: 2px solid transparent;
  margin-bottom: 8px;
}

.patient-card:hover {
  background: var(--bg-hover);
}

.patient-card.active {
  background: var(--accent-soft);
  border-color: var(--primary);
}

.patient-card .avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.patient-card .info {
  flex: 1;
  min-width: 0;
}

.patient-card .name {
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  margin-bottom: 2px;
}

.patient-card .meta {
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  gap: 8px;
}

.patient-card .teeth-badge {
  background: var(--success-bg);
  color: var(--success-text);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 500;
}

.patient-card .no-teeth {
  background: var(--bg-subtle);
  color: var(--text-muted);
}

/* 病患刪除按鈕 */
.patient-card .delete-patient-btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 14px;
  opacity: 0;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.patient-card:hover .delete-patient-btn {
  opacity: 0.6;
}

.patient-card .delete-patient-btn:hover {
  opacity: 1;
  background: var(--danger-bg);
  transform: scale(1.1);
}

/* 病患詳情面板 */
.patient-detail-panel {
  background: var(--card);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.patient-form-container {
  height: 100%;
  overflow-y: auto;
}

.form-placeholder {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: var(--text-muted);
}

.placeholder-icon {
  font-size: 48px;
  opacity: 0.5;
}

/* 病患表單 */
.patient-form {
  padding: 20px 24px;
}

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

.form-header h3 {
  font-size: 18px;
  font-weight: 600;
}

.form-section {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}

.form-section legend {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  padding: 0 8px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 12px;
}

.form-row:last-child {
  margin-bottom: 0;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
}

.form-group .required {
  color: var(--danger);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  transition: border-color 0.2s, box-shadow 0.2s;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.form-group textarea {
  resize: vertical;
}

.form-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.btn.success {
  background: linear-gradient(135deg, var(--success), var(--success-hover));
  color: #fff;
}

.btn.success:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--success-hover), color-mix(in srgb, var(--success-hover) 84%, #0f130f));
}

/* 返回按鈕與當前病患資訊 */
.current-patient-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  background: #f0fdf4;
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid #bbf7d0;
}

.current-patient-info .sep {
  color: #86efac;
}

#currentPatientName {
  font-weight: 600;
  color: #166534;
}

#currentPatientId {
  color: #15803d;
  font-size: 11px;
}

/* ===== CIELAB 色彩分析樣式 ===== */
.lch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.lch-row strong {
  min-width: 50px;
  flex-shrink: 0;
}

.lch-value {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: flex-end;
}

.lch-num {
  font-family: 'Segoe UI Mono', monospace;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  min-width: 50px;
  text-align: right;
}

.lch-label {
  font-size: 10px;
  min-width: 55px;
  text-align: center;
  position: absolute;
  left: 55px;
  padding: 2px 6px;
  border-radius: 4px;
  background: #f1f5f9;
  color: var(--text-muted);
}

.lch-label.bright { background: #fef3c7; color: #92400e; }
.lch-label.normal { background: #d1fae5; color: #065f46; }
.lch-label.dim { background: #e5e7eb; color: #374151; }
.lch-label.dark { background: #1f2937; color: #f9fafb; }
.lch-label.high { background: #fce7f3; color: #9d174d; }
.lch-label.low { background: #e0e7ff; color: #3730a3; }
.lch-label.gray { background: #f3f4f6; color: #6b7280; }
.lch-label.red { background: var(--danger-bg); color: var(--danger-text); }
.lch-label.orange { background: #ffedd5; color: #9a3412; }
.lch-label.yellow { background: #fef9c3; color: #854d0e; }
.lch-label.yellow-green { background: #ecfccb; color: #3f6212; }
.lch-label.green { background: #dcfce7; color: #166534; }
.lch-label.blue { background: var(--info-bg); color: var(--info-text); }
.lch-label.purple { background: #ede9fe; color: #5b21b6; }
.lch-label.neutral { background: #f3f4f6; color: #374151; }

.lch-bar-wrap {
  margin: 4px 0 10px 0;
}

.lch-bar {
  height: 8px;
  border-radius: 4px;
  position: relative;
  overflow: visible;
}

.lch-bar.l-bar {
  background: linear-gradient(90deg, #000 0%, #fff 100%);
  border: 1px solid #e5e7eb;
}

.lch-bar.c-bar {
  background: linear-gradient(90deg, #9ca3af 0%, #f59e0b 50%, #ef4444 100%);
}

.lch-bar.h-bar {
  background: linear-gradient(90deg, 
    #ef4444 0%, 
    #f59e0b 16.67%, 
    #eab308 33.33%, 
    #22c55e 50%, 
    #06b6d4 66.67%, 
    #3b82f6 83.33%, 
    #ef4444 100%
  );
}

/* CIELAB a* 色條 (綠到紅) */
.lch-bar.a-bar {
  background: linear-gradient(90deg, #22c55e 0%, #9ca3af 50%, #ef4444 100%);
}

/* CIELAB b* 色條 (藍到黃) */
.lch-bar.b-bar {
  background: linear-gradient(90deg, #3b82f6 0%, #9ca3af 50%, #eab308 100%);
}

.lch-indicator {
  position: absolute;
  top: -3px;
  width: 4px;
  height: 14px;
  background: #1e293b;
  border: 2px solid #fff;
  border-radius: 3px;
  transform: translateX(-50%);
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.lch-range {
  font-size: 9px;
  color: var(--text-muted);
  display: block;
  margin-top: 3px;
}

/* ===== VITA 色卡比對樣式 ===== */
.shade-match-best {
  display: flex;
  gap: 10px;
  padding: 10px;
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border-radius: 8px;
  border: 1px solid #86efac;
  margin: 8px 0;
}

.shade-color {
  width: 48px;
  height: 48px;
  border-radius: 6px;
  border: 2px solid rgba(0,0,0,0.1);
  flex-shrink: 0;
  box-shadow: inset 0 1px 2px rgba(255,255,255,0.5);
}

.shade-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

.shade-code {
  font-size: 16px;
  font-weight: 700;
  color: #166534;
}

.shade-desc {
  font-size: 11px;
  color: #15803d;
}

.shade-delta {
  font-size: 10px;
  color: #22c55e;
  font-family: 'Segoe UI Mono', monospace;
}

.shade-alternatives {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.shade-alt {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  background: var(--bg-subtle);
  border-radius: 6px;
  border: 1px solid var(--border);
  flex: 1;
}

.shade-color-sm {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  border: 1px solid rgba(0,0,0,0.1);
  flex-shrink: 0;
}

.shade-code-sm {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
}

.shade-delta-sm {
  font-size: 9px;
  color: var(--text-muted);
  font-family: 'Segoe UI Mono', monospace;
}

/* ===== VITA 色卡對照面板 ===== */
.shade-guide-box {
  background: var(--card);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.shade-guide-box .box-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
}

.shade-guide-panel {
  max-height: 300px;
  overflow-y: auto;
  transition: max-height 0.3s ease;
}

.shade-guide-panel.collapsed {
  max-height: 0;
  overflow: hidden;
}

.shade-guide-grid {
  padding: 10px;
}

.shade-series {
  margin-bottom: 12px;
}

.shade-series:last-child {
  margin-bottom: 0;
}

.series-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  padding-left: 2px;
}

.series-items {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.shade-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 6px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
  border: 1px solid transparent;
}

.shade-item:hover {
  background: var(--bg-subtle);
  border-color: var(--border);
}

.shade-item.matched {
  background: #ecfdf5;
  border-color: #10b981;
}

.shade-swatch {
  width: 28px;
  height: 28px;
  border-radius: 4px;
  border: 1px solid rgba(0,0,0,0.1);
  box-shadow: inset 0 1px 2px rgba(255,255,255,0.5);
}

.shade-name {
  font-size: 9px;
  font-weight: 600;
  color: var(--text);
}

/* ===== 草稿指示器 ===== */
.draft-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  border-radius: 20px;
  font-size: 12px;
  color: #92400e;
  border: 1px solid #f59e0b;
}

.draft-indicator.hidden {
  display: none;
}

.draft-dot {
  width: 8px;
  height: 8px;
  background: #f59e0b;
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ===== 彈窗 (Modal) ===== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal.hidden {
  display: none;
}

.modal-dialog {
  background: var(--card);
  border-radius: 16px;
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow: hidden;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
  animation: modalSlideIn 0.2s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

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

.modal-header h3 {
  font-size: 18px;
  font-weight: 600;
}

.modal-content {
  padding: 20px;
  max-height: 60vh;
  overflow-y: auto;
}

.modal-desc {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 13px;
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ===== 匯出選項 ===== */
.export-section {
  margin-bottom: 20px;
}

.export-section h4 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.checkbox-label,
.radio-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s;
  margin-bottom: 6px;
}

.checkbox-label:hover,
.radio-label:hover {
  background: var(--bg-subtle);
}

.checkbox-label input,
.radio-label input {
  margin-top: 2px;
  accent-color: var(--primary);
}

.checkbox-label span,
.radio-label span {
  font-size: 13px;
  color: var(--text);
}

.checkbox-label input:disabled + span,
.radio-label input:disabled + span {
  color: var(--text-muted);
}

.radio-label {
  flex-direction: column;
  align-items: flex-start;
  padding-left: 30px;
  position: relative;
}

.radio-label input {
  position: absolute;
  left: 10px;
  top: 12px;
}

.radio-label small {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.format-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
  padding-left: 12px;
}

/* ===== 匯入拖放區 ===== */
.import-dropzone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--bg-subtle);
}

.import-dropzone:hover,
.import-dropzone.dragover {
  border-color: var(--primary);
  background: var(--accent-soft);
}

.dropzone-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.dropzone-text p {
  margin: 4px 0;
  color: var(--text);
  font-size: 14px;
}

.dropzone-text .hint {
  padding-left: 0;
}

.dropzone-formats {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 12px;
}

.import-dropzone.hidden {
  display: none;
}

/* 匯入檔案資訊 */
.import-file-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: #f0fdf4;
  border-radius: 10px;
  border: 1px solid #86efac;
}

.import-file-info.hidden {
  display: none;
}

.file-icon {
  font-size: 32px;
}

.file-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

#importFileName {
  font-weight: 600;
  color: var(--text);
  font-size: 14px;
}

#importFileSize {
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== 本機儲存對話框 ===== */
.local-storage-options {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.storage-status {
  background: linear-gradient(135deg, var(--surface-subtle), var(--surface-page));
  border-radius: 12px;
  padding: 16px;
  border: 1px solid var(--border);
}

.storage-status h4 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.status-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px;
  background: var(--card);
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.status-icon {
  font-size: 24px;
  margin-bottom: 4px;
}

.status-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
}

.status-label {
  font-size: 11px;
  color: var(--text-muted);
}

.last-saved-info {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}

.last-saved-info .saved-time {
  color: var(--success);
}

.last-saved-info .no-saved {
  color: var(--text-muted);
}

.storage-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.action-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card);
  transition: all 0.15s;
}

.action-card:hover {
  border-color: var(--primary);
  box-shadow: 0 2px 8px var(--focus-ring);
}

.action-card .action-icon {
  font-size: 28px;
  flex-shrink: 0;
}

.action-card .action-info {
  flex: 1;
}

.action-card .action-info h5 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 3px;
  color: var(--text);
}

.action-card .action-info p {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
}

.action-card .btn {
  flex-shrink: 0;
}

.save-card:hover {
  border-color: var(--success);
  background: #f0fdf4;
}

.load-card:hover {
  border-color: var(--primary);
  background: var(--accent-soft);
}

.clear-card:hover {
  border-color: var(--danger);
  background: var(--danger-bg);
}

.storage-note {
  background: #fffbeb;
  border: 1px solid #fcd34d;
  border-radius: 8px;
  padding: 12px;
  font-size: 12px;
  color: #92400e;
  line-height: 1.5;
}

.storage-note strong {
  color: #78350f;
}

/* 響應式調整 */
@media (max-width: 1200px) {
  .patient-main {
    grid-template-columns: 300px 1fr;
  }
}

@media (max-width: 900px) {
  .patient-main {
    grid-template-columns: 1fr;
  }
  
  .patient-list-panel {
    max-height: 300px;
  }
}

/* ===== 教學引導模式樣式 ===== */
.tutorial-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  pointer-events: none;
}

.tutorial-overlay.hidden {
  display: none;
}

.tutorial-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  pointer-events: auto;
}

.tutorial-highlight {
  position: absolute;
  border-radius: 8px;
  box-shadow: 
    0 0 0 4px var(--focus-ring),
    0 0 0 9999px var(--overlay-bg);
  background: transparent;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  z-index: 1;
}

.tutorial-highlight::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 12px;
  border: 2px dashed color-mix(in srgb, var(--primary) 60%, transparent);
  animation: tutorialPulse 2s ease-in-out infinite;
}

@keyframes tutorialPulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.02);
  }
}

.tutorial-tooltip {
  position: absolute;
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--elevation-lg);
  width: 360px;
  max-width: 90vw;
  pointer-events: auto;
  z-index: 2;
  animation: tutorialSlideIn 0.3s ease-out;
  overflow: hidden;
}

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

.tutorial-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
}

.tutorial-step-badge {
  font-size: 12px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.2);
  padding: 4px 10px;
  border-radius: 12px;
}

.tutorial-skip {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.8);
  font-size: 12px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all 0.2s;
}

.tutorial-skip:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.tutorial-content {
  padding: 24px;
  text-align: center;
}

.tutorial-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.tutorial-content h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.tutorial-content p {
  font-size: 14px;
  color: #64748b;
  line-height: 1.6;
}

.tutorial-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  border-top: 1px solid var(--border);
  background: var(--surface-subtle);
}

.tutorial-dots {
  display: flex;
  gap: 6px;
}

.tutorial-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line-strong);
  transition: all 0.2s;
}

.tutorial-dot.active {
  background: var(--primary);
  transform: scale(1.2);
}

.tutorial-dot.done {
  background: var(--success);
}

/* 重新開始教學按鈕（已移至工具列，隱藏此浮動按鈕） */
.restart-tutorial-btn {
  display: none !important;
}

/* 工具列操作說明按鈕 */
.help-btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
  color: #fff !important;
  border: none !important;
  font-weight: 600;
  padding: 8px 14px !important;
  border-radius: 8px;
  box-shadow: 0 2px 8px var(--focus-ring);
  transition: all 0.3s ease;
}

.help-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--focus-ring) 120%, transparent);
  background: linear-gradient(135deg, var(--primary-dark), var(--brand-700)) !important;
}

.help-btn:active {
  transform: translateY(0);
}

/* 歡迎彈窗 */
.welcome-modal {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.7);
  animation: fadeIn 0.3s ease-out;
}

.welcome-modal.hidden {
  display: none;
}

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

.welcome-dialog {
  background: #fff;
  border-radius: 20px;
  width: 440px;
  max-width: 90vw;
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.3);
  animation: welcomeSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow: hidden;
}

@keyframes welcomeSlideIn {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.welcome-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--info) 100%);
  padding: 32px;
  text-align: center;
  color: #fff;
}

.welcome-header .welcome-icon {
  font-size: 64px;
  margin-bottom: 12px;
}

.welcome-header h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.welcome-header p {
  font-size: 14px;
  opacity: 0.9;
}

.welcome-content {
  padding: 24px 32px;
}

.welcome-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.welcome-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-subtle);
  border-radius: 10px;
}

.welcome-feature .feature-icon {
  font-size: 24px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.welcome-feature .feature-text {
  flex: 1;
}

.welcome-feature .feature-text strong {
  display: block;
  font-size: 14px;
  color: #1e293b;
  margin-bottom: 2px;
}

.welcome-feature .feature-text span {
  font-size: 12px;
  color: #64748b;
}

.welcome-actions {
  display: flex;
  gap: 12px;
}

.welcome-actions .btn {
  flex: 1;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 10px;
}

.welcome-actions .btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.welcome-actions .btn.ghost {
  border: 2px solid #e5e7eb;
}

/* ====================================================
   深色主題覆寫  (styles.css)
   ==================================================== */

/* ---- 通用元素 ---- */
[data-theme="dark"] .btn.ghost {
  border-color: var(--border);
  color: var(--text);
}
[data-theme="dark"] .btn.ghost:hover:not(:disabled) {
  background: var(--bg-hover);
}
[data-theme="dark"] button.ghost {
  color: var(--text);
  border-color: var(--border);
}
[data-theme="dark"] button.ghost:hover {
  background: var(--bg-hover);
}
[data-theme="dark"] button.danger {
  border-color: var(--danger-border);
}

/* ---- 工具列 / Card ---- */
[data-theme="dark"] .toolbar {
  box-shadow: 0 1px 4px var(--shadow-color);
  border: 1px solid var(--border);
}
[data-theme="dark"] .action-bar {
  box-shadow: 0 1px 4px var(--shadow-color);
  border: 1px solid var(--border);
}
[data-theme="dark"] .preview-box,
[data-theme="dark"] .detail-box {
  box-shadow: 0 1px 4px var(--shadow-color);
  border: 1px solid var(--border);
}
[data-theme="dark"] .tooth-box {
  box-shadow: 0 1px 4px var(--shadow-color);
  border: 1px solid var(--border);
}
[data-theme="dark"] .shade-guide-box {
  border: 1px solid var(--border);
}
[data-theme="dark"] .patient-list-panel,
[data-theme="dark"] .patient-detail-panel {
  border: 1px solid var(--border);
}

/* ---- 模式按鈕 ---- */
[data-theme="dark"] .mode-btn:hover {
  background: var(--bg-hover);
  color: var(--primary);
}

/* ---- 按鈕通用文字提亮 ---- */
[data-theme="dark"] .btn {
  color: var(--text);
}
[data-theme="dark"] .btn.primary {
  color: #fff;
}
[data-theme="dark"] .btn.ghost {
  color: var(--text);
}
[data-theme="dark"] .btn.danger {
  color: var(--danger);
}
[data-theme="dark"] .btn.success {
  color: #fff;
}
[data-theme="dark"] .nav-item {
  color: var(--text-muted);
}
[data-theme="dark"] .nav-item:hover {
  color: var(--text);
}
[data-theme="dark"] .nav-item.active {
  color: var(--primary);
}

/* ---- 步驟指示 ---- */
[data-theme="dark"] .steps-inline .step.active {
  background: var(--bg-active-hover);
}
[data-theme="dark"] .steps-inline .step.done {
  background: var(--success-bg);
  color: var(--success);
}

/* ---- 工具列標題 ---- */
[data-theme="dark"] .toolbar-title {
  color: var(--text);
}
[data-theme="dark"] .tooth-title {
  color: var(--text);
}
[data-theme="dark"] .box-header {
  color: var(--text);
}
[data-theme="dark"] .panel-header h2 {
  color: var(--text);
}
[data-theme="dark"] .form-header h3 {
  color: var(--text);
}
[data-theme="dark"] .form-section legend {
  color: var(--primary);
}
[data-theme="dark"] .modal-header h3 {
  color: var(--text);
}
[data-theme="dark"] .export-section h4 {
  color: var(--text);
}
[data-theme="dark"] .action-card .action-info h5 {
  color: var(--text);
}
[data-theme="dark"] .storage-status h4 {
  color: var(--text);
}
[data-theme="dark"] .status-label {
  color: var(--text-muted);
}

/* ---- 圖片列表 ---- */
[data-theme="dark"] .image-list-panel {
  background: var(--card);
}
[data-theme="dark"] .upload-zone {
  background: linear-gradient(135deg, var(--bg-subtle), var(--bg));
}
[data-theme="dark"] .upload-zone:hover {
  background: linear-gradient(135deg, var(--bg-active), var(--bg-active-hover));
}

/* ---- 牙位按鈕 ---- */
[data-theme="dark"] .tooth-btn {
  background: var(--bg-subtle);
}
[data-theme="dark"] .tooth-btn:hover {
  background: var(--bg-active);
}
[data-theme="dark"] .tooth-btn.has-data {
  color: var(--success-text);
  background: var(--success-bg);
  border-color: var(--success);
}
[data-theme="dark"] .tooth-btn.has-data-other {
  color: var(--info-text);
  background: var(--info-bg);
  border-color: var(--primary);
}
[data-theme="dark"] .tooth-btn.active {
  background: var(--bg-active-hover);
  color: var(--primary);
}
[data-theme="dark"] .tooth-btn .no-data-text {
  color: var(--text-muted);
}
[data-theme="dark"] .tooth-btn.no-data {
  color: var(--text-muted);
}
[data-theme="dark"] .tooth-hint .hint-tip {
  background: var(--badge-muted-bg);
  color: var(--text);
}
[data-theme="dark"] .lch-chip {
  background: var(--badge-muted-bg);
}

/* ---- 詳情列 ---- */
[data-theme="dark"] .detail-row {
  background: var(--bg-subtle);
}
[data-theme="dark"] .detail-lch {
  color: var(--text);
}
[data-theme="dark"] .badge {
  background: var(--badge-muted-bg);
}

/* ---- 色彩預覽 ---- */
[data-theme="dark"] .color-preview {
  background: linear-gradient(135deg, #111111, #000000);
}
[data-theme="dark"] .preview-empty {
  color: var(--text-muted);
}

/* ---- VITA 色卡 ---- */
[data-theme="dark"] .shade-alt {
  background: var(--bg-subtle);
  border-color: var(--border);
}
[data-theme="dark"] .shade-item:hover {
  background: var(--bg-hover);
  border-color: var(--border);
}
[data-theme="dark"] .shade-guide-box {
  box-shadow: 0 1px 4px var(--shadow-color);
}

/* ---- CIELAB ---- */
[data-theme="dark"] .lch-label {
  background: var(--badge-muted-bg);
  color: var(--text);
}
[data-theme="dark"] .lch-indicator {
  background: #e2e8f0;
  border-color: #000;
}
[data-theme="dark"] .lch-bar.l-bar {
  border-color: var(--border);
}

/* ---- 草稿指示器 ---- */
[data-theme="dark"] .draft-indicator {
  background: linear-gradient(135deg, #78350f, #92400e);
  color: #fef3c7;
  border-color: #b45309;
}

/* ---- 病患管理 ---- */
[data-theme="dark"] .patient-list-panel,
[data-theme="dark"] .patient-detail-panel {
  box-shadow: 0 2px 8px var(--shadow-color);
}
[data-theme="dark"] .patient-card:hover {
  background: var(--bg-hover);
}
[data-theme="dark"] .patient-card.active {
  background: var(--bg-active);
}
[data-theme="dark"] .patient-card .avatar {
  background: linear-gradient(135deg, #312e81, #4338ca);
}
[data-theme="dark"] .patient-card .teeth-badge {
  background: var(--success-bg);
  color: var(--success);
}
[data-theme="dark"] .patient-card .no-teeth {
  background: var(--badge-muted-bg);
}
[data-theme="dark"] .patient-card .delete-patient-btn:hover {
  background: var(--danger-bg);
}
[data-theme="dark"] .current-patient-info {
  background: var(--success-bg);
  border-color: var(--success);
  color: var(--text);
}
[data-theme="dark"] #currentPatientName {
  color: var(--success-text);
}
[data-theme="dark"] #currentPatientId {
  color: var(--success);
}

/* ---- 表單 ---- */
[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group select,
[data-theme="dark"] .form-group textarea,
[data-theme="dark"] .search-box input {
  background: var(--input-bg);
  color: var(--text);
  border-color: var(--input-border);
}

/* ---- 匯入/匯出 ---- */
[data-theme="dark"] .import-dropzone {
  background: var(--bg-subtle);
  border-color: var(--border);
}
[data-theme="dark"] .import-dropzone:hover,
[data-theme="dark"] .import-dropzone.dragover {
  background: var(--bg-active);
  border-color: var(--primary);
}
[data-theme="dark"] .import-file-info {
  background: var(--success-bg);
  border-color: var(--success);
}
[data-theme="dark"] .storage-status {
  background: linear-gradient(135deg, var(--bg-subtle), var(--bg));
}
[data-theme="dark"] .storage-note {
  background: rgba(120,53,15,0.25);
  border-color: #b45309;
  color: #fef3c7;
}
[data-theme="dark"] .storage-note strong {
  color: #fde68a;
}
[data-theme="dark"] .action-card:hover {
  box-shadow: 0 2px 8px var(--focus-ring);
}
[data-theme="dark"] .save-card:hover {
  border-color: var(--success);
  background: var(--success-bg);
}
[data-theme="dark"] .load-card:hover {
  border-color: var(--primary);
  background: var(--bg-active);
}
[data-theme="dark"] .clear-card:hover {
  border-color: var(--danger);
  background: var(--danger-bg);
}

/* ---- Checkbox / Radio ---- */
[data-theme="dark"] .checkbox-label:hover,
[data-theme="dark"] .radio-label:hover {
  background: var(--bg-hover);
}

/* ---- Modal ---- */
[data-theme="dark"] .modal-dialog {
  box-shadow: 0 25px 50px rgba(0,0,0,0.7);
  border: 1px solid var(--border);
}
[data-theme="dark"] .shade-match-best {
  background: linear-gradient(135deg, var(--success-bg), var(--success-bg));
  border-color: var(--success);
}
[data-theme="dark"] .shade-code {
  color: var(--success-text);
}
[data-theme="dark"] .shade-desc {
  color: var(--success);
}

/* ---- 教學引導 ---- */
[data-theme="dark"] .tutorial-tooltip {
  background: var(--card);
  border: 1px solid var(--border);
}
[data-theme="dark"] .tutorial-content h3 {
  color: var(--text);
}
[data-theme="dark"] .tutorial-content p {
  color: var(--text-muted);
}
[data-theme="dark"] .tutorial-footer {
  border-color: var(--border);
  background: var(--bg-subtle);
}
[data-theme="dark"] .tutorial-dot {
  background: var(--border);
}

/* ---- 歡迎彈窗 ---- */
[data-theme="dark"] .welcome-dialog {
  background: var(--card);
  border: 1px solid var(--border);
}
[data-theme="dark"] .welcome-content {
  color: var(--text);
}
[data-theme="dark"] .welcome-feature .feature-text {
  color: var(--text);
}
[data-theme="dark"] .welcome-feature .feature-text span {
  color: var(--text-muted);
}
[data-theme="dark"] .welcome-actions .btn.ghost {
  border-color: var(--border);
  color: var(--text);
}

/* ---- 裁切彈窗（本身就是深色，微調邊框） ---- */
[data-theme="dark"] .crop-dialog {
  background: #0a0a0a;
  border: 1px solid var(--border);
}
[data-theme="dark"] .crop-nav .btn {
  background: #222;
  color: var(--text);
  border-color: #333;
}
[data-theme="dark"] .crop-nav .btn:hover:not(:disabled) {
  background: #333;
}
[data-theme="dark"] .crop-header {
  color: var(--text);
}
[data-theme="dark"] .crop-tip {
  color: var(--text-muted);
}
[data-theme="dark"] .crop-canvas-wrap {
  background: #000;
  border-color: var(--border);
}
[data-theme="dark"] .crop-footer {
  border-color: var(--border);
}

/* ---- 深色模式切換按鈕 ---- */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.theme-toggle:hover {
  transform: scale(1.08);
  border-color: var(--primary);
  box-shadow: 0 2px 8px var(--shadow-md);
}
.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.theme-toggle .icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}
.theme-toggle .icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}
[data-theme="dark"] .theme-toggle .icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}
[data-theme="dark"] .theme-toggle .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* ---- 額外深色修正 ---- */
[data-theme="dark"] .btn.danger {
  border-color: var(--danger-border);
}
[data-theme="dark"] .shade-item.matched {
  background: var(--success-bg);
  border-color: var(--success);
}
[data-theme="dark"] .shade-delta {
  color: var(--success);
}
[data-theme="dark"] .welcome-feature {
  background: var(--bg-subtle);
}
[data-theme="dark"] .welcome-feature .feature-icon {
  background: var(--card);
  border: 1px solid var(--border);
}
[data-theme="dark"] .welcome-feature .feature-text {
  color: var(--text);
}
[data-theme="dark"] .welcome-feature .feature-text span {
  color: var(--text-muted);
}
/* CIELAB 色標語義色 — 深色模式下保留區分但亮度提高 */
[data-theme="dark"] .lch-label.bright { background: #78350f; color: #fde68a; }
[data-theme="dark"] .lch-label.normal { background: #064e3b; color: #a7f3d0; }
[data-theme="dark"] .lch-label.dim { background: #1f2937; color: #d1d5db; }
[data-theme="dark"] .lch-label.dark { background: #111827; color: #f3f4f6; }
[data-theme="dark"] .lch-label.high { background: #831843; color: #fbcfe8; }
[data-theme="dark"] .lch-label.low { background: #312e81; color: #c7d2fe; }
[data-theme="dark"] .lch-label.gray { background: #1f2937; color: #d1d5db; }
[data-theme="dark"] .lch-label.red { background: var(--danger-bg); color: var(--danger-text); }
[data-theme="dark"] .lch-label.orange { background: #7c2d12; color: #fed7aa; }
[data-theme="dark"] .lch-label.yellow { background: #713f12; color: #fef08a; }
[data-theme="dark"] .lch-label.yellow-green { background: #365314; color: #d9f99d; }
[data-theme="dark"] .lch-label.green { background: #14532d; color: #bbf7d0; }
[data-theme="dark"] .lch-label.blue { background: #1e3a5f; color: #bfdbfe; }
[data-theme="dark"] .lch-label.purple { background: #3b0764; color: #ddd6fe; }
[data-theme="dark"] .lch-label.neutral { background: #1f2937; color: #d1d5db; }

/* 預覽色彩標籤 */
[data-theme="dark"] .preview-colors .color-label {
  color: var(--text-muted);
}
[data-theme="dark"] .preview-colors .color-lch {
  color: var(--text-muted);
}
[data-theme="dark"] .preview-legend {
  color: var(--text-muted);
  background: rgba(255,255,255,0.06);
}

/* 牙齒 tooltip */
[data-theme="dark"] .tooth-tooltip {
  background: var(--card);
  border: 1px solid var(--border);
}
[data-theme="dark"] .tooth-tooltip .tt-lch {
  color: var(--text-muted);
}

/* 色階指南 */
[data-theme="dark"] .shade-code-sm {
  color: var(--text);
}
[data-theme="dark"] .shade-delta-sm {
  color: var(--text-muted);
}

/* 模式徽章 */
[data-theme="dark"] .mode-badge {
  color: #fff;
}

/* Canvas 色彩提示 */
[data-theme="dark"] .canvas-color-tip {
  background: var(--card);
  border: 1px solid var(--border);
}
[data-theme="dark"] .canvas-color-tip .cct-lch {
  color: var(--text-muted);
}

/* 表單 placeholder */
[data-theme="dark"] .form-group input::placeholder,
[data-theme="dark"] .form-group textarea::placeholder,
[data-theme="dark"] .search-box input::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

/* 匯入匯出文字 */
[data-theme="dark"] .dropzone-text p {
  color: var(--text);
}
[data-theme="dark"] .dropzone-formats {
  color: var(--text-muted);
}
[data-theme="dark"] #importFileName {
  color: var(--text);
}
[data-theme="dark"] #importFileSize {
  color: var(--text-muted);
}
[data-theme="dark"] .action-card .action-info p {
  color: var(--text-muted);
}
[data-theme="dark"] .last-saved-info {
  color: var(--text-muted);
}
[data-theme="dark"] .hint {
  color: var(--text-muted);
}

/* 滾動條 */
[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
}
[data-theme="dark"] ::-webkit-scrollbar-track {
  background: var(--bg);
}

/* ===== 取色圓環指標 ===== */
.pick-color-ring {
  position: fixed;
  left: 0;
  top: 0;
  width: 44px;
  height: 44px;
  border-radius: 4px;
  pointer-events: none;
  z-index: 99999;
  display: none;
  border: 8px solid currentColor;
  background: transparent;
  will-change: transform;
  margin-left: -22px;
  margin-top: -22px;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.25),
    inset 0 0 0 1px rgba(0, 0, 0, 0.2),
    0 2px 8px rgba(0, 0, 0, 0.4);
}
.pick-color-ring.visible {
  display: block;
}
.pick-color-ring-inner {
  display: none;
}

/* ===== Brand Theme Refresh ===== */
.toolbar,
.action-bar,
.tooth-box,
.preview-box,
.detail-box,
.tutorial-tooltip {
  box-shadow: var(--elevation-sm);
}

.steps-inline .step.active {
  background: var(--accent-soft);
  color: var(--primary);
}

.steps-inline .step.done {
  background: var(--success-bg);
  color: var(--success);
}

@keyframes stepPulse {
  0%, 100% {
    box-shadow: 0 0 0 0 var(--focus-ring);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(134, 175, 52, 0);
    transform: scale(1.05);
  }
}

.btn.ghost:hover:not(:disabled) {
  background: var(--bg-hover);
}

.upload-zone {
  background: linear-gradient(135deg, var(--surface-subtle), var(--surface-page));
}

.upload-zone:hover {
  background: linear-gradient(135deg, var(--accent-soft), var(--surface-subtle));
}

.mode-btn:hover {
  background: var(--surface-card);
  color: var(--primary);
}

.mode-btn.active {
  background: var(--primary);
  color: var(--accent-contrast);
  box-shadow: 0 2px 6px var(--focus-ring);
}

.tooth-hint .hint-tip,
.badge,
.detail-row,
.tooth-btn,
.material-selector,
.formula-row {
  background: var(--surface-subtle);
}

.tooth-hint .hint-tip,
.preview-empty,
.preview-colors .color-label,
.preview-colors .color-lch,
.detail-lch,
.formula-empty,
.formula-empty-text {
  color: var(--text-secondary);
}

.dot.gray { background: var(--line-strong); }
.dot.green { background: var(--success); }
.dot.blue { background: var(--info); }

.tooth-btn:hover {
  border-color: var(--primary);
  background: var(--accent-soft);
}

.tooth-btn.has-data {
  color: var(--success-text);
  background: var(--success-bg);
  border-color: var(--success-border);
}

.tooth-btn.has-data-other {
  color: var(--info-text);
  background: var(--info-bg);
  border-color: var(--info-border);
}

.tooth-btn.has-data-other::after {
  color: var(--info);
}

.tooth-btn.active {
  box-shadow: 0 0 0 2px var(--focus-ring);
  border-color: var(--primary);
  background: var(--accent-soft);
  color: var(--primary);
}

.tooth-btn .lch-chip {
  background: var(--badge-muted-bg);
}

.tutorial-overlay {
  background: var(--overlay-bg);
}

.tutorial-highlight {
  box-shadow:
    0 0 0 4px var(--focus-ring),
    0 0 0 9999px var(--overlay-bg);
}

.tutorial-highlight::after {
  border-color: color-mix(in srgb, var(--primary) 60%, transparent);
}

.tutorial-tooltip {
  background: var(--card);
}

.tutorial-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
}

.tutorial-content h3 {
  color: var(--text);
}

.tutorial-content p {
  color: var(--text-muted);
}

.tutorial-footer {
  border-top-color: var(--border);
  background: var(--surface-subtle);
}

/* ===== 手機瀏覽器建議視窗 ===== */
body.mobile-browser-recommendation-open {
  overflow: hidden;
}

.mobile-browser-recommendation {
  position: fixed;
  inset: 0;
  z-index: 20000;
  display: grid;
  place-items: center;
  overflow-y: auto;
  padding: max(20px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right))
    max(20px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  background: rgba(7, 20, 28, 0.7);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

.mobile-browser-recommendation-card {
  width: min(100%, 420px);
  padding: 24px;
  border: 1px solid var(--border, #d6e0e3);
  border-radius: 20px;
  background: var(--card, #fff);
  color: var(--text, #17323a);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.3);
  text-align: center;
}

.mobile-browser-recommendation-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: var(--warning-bg, #fff4d8);
  color: var(--warning-text, #9a5a00);
}

.mobile-browser-recommendation-icon svg {
  width: 26px;
  height: 26px;
}

.mobile-browser-recommendation-card h2 {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.35;
}

.mobile-browser-recommendation-card > p {
  margin: 10px 0 18px;
  color: var(--text-secondary, #526a72);
  font-size: 0.95rem;
  line-height: 1.6;
}

.mobile-browser-recommendation-target {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  border: 1px solid var(--border, #d6e0e3);
  border-radius: 14px;
  background: var(--surface-subtle, #f4f8f9);
  text-align: left;
}

.mobile-browser-recommendation-target strong {
  color: var(--primary, #087f8c);
  font-size: 1rem;
}

.mobile-browser-recommendation-target span {
  color: var(--text-secondary, #526a72);
  font-size: 0.9rem;
  line-height: 1.5;
}

.mobile-browser-recommendation-status {
  min-height: 1.5em;
  margin: 10px 0 2px;
  color: var(--success-text, #17663a);
  font-size: 0.85rem;
  line-height: 1.5;
}

.mobile-browser-recommendation-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.mobile-browser-recommendation-actions button {
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--primary, #087f8c);
  border-radius: 12px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
}

.mobile-browser-copy {
  background: var(--primary, #087f8c);
  color: #fff;
}

.mobile-browser-continue {
  background: transparent;
  color: var(--primary, #087f8c);
}

.mobile-browser-recommendation-actions button:focus-visible {
  outline: 3px solid var(--focus-ring, rgba(8, 127, 140, 0.35));
  outline-offset: 2px;
}

.mobile-browser-copy-fallback {
  position: fixed;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

@media (max-width: 480px) {
  .mobile-browser-recommendation {
    place-items: end center;
    padding-top: max(16px, env(safe-area-inset-top));
  }

  .mobile-browser-recommendation-card {
    padding: 22px 18px max(20px, env(safe-area-inset-bottom));
    border-radius: 20px 20px 14px 14px;
  }
}