/* =========================================================
   標註系統 — Annotation Overlay
   ========================================================= */
[data-annotate] {
  position: relative;
  scroll-margin-top: 32px;    /* 頂部元素 pulse outline 唔被 viewport top 截走 */
}
body.inspect-on [data-annotate] {
  cursor: crosshair;
}
body.inspect-on [data-annotate]:hover {
  outline: 2px dashed var(--cat-structure);
  outline-offset: 2px;
  transition: outline-color 0.15s;
}
body.inspect-on [data-annotate][data-cat="design"]:hover { outline-color: var(--cat-design); }
body.inspect-on [data-annotate][data-cat="tech"]:hover { outline-color: var(--cat-tech); }

/* Annotation pin — keyboard-friendly focusable button per [data-annotate].
   Avoids nested-interactive WCAG violation by NOT making the section itself a button. */
.annotate-pin {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.85);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  font-style: italic;
  font-family: var(--font-display);
  color: var(--cat-structure-text);
  cursor: pointer;
  z-index: 5;
  box-shadow: 0 2px 8px rgba(26,26,46,0.12);
  padding: 0;
  line-height: 1;
  transition: transform 0.15s var(--ease), background 0.15s, color 0.15s;
}
body.inspect-on .annotate-pin { display: flex; }
[data-cat="design"] > .annotate-pin { color: var(--cat-design-text); }
[data-cat="tech"] > .annotate-pin { color: var(--cat-tech-text); }
.annotate-pin:hover,
.annotate-pin:focus-visible {
  background: #fff;
  transform: scale(1.12);
}
.annotate-pin:focus-visible {
  outline: 3px solid var(--coral-text);
  outline-offset: 3px;
}
/* Mark visited pins differently */
[data-annotate].annotate-visited > .annotate-pin {
  background: var(--mint);
  color: #fff;
  border-color: #fff;
}

/* Tooltip card */
.ann-tip {
  position: fixed;
  pointer-events: none;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow-lg);
  min-width: 240px;
  max-width: 320px;
  z-index: 999;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s;
  font-size: 13.5px;
}
.ann-tip.visible { opacity: 1; transform: translateY(0); }
.ann-tip .ann-cat {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--cat-structure-text);
}
.ann-tip[data-cat="design"] .ann-cat { color: var(--cat-design-text); }
.ann-tip[data-cat="tech"] .ann-cat { color: var(--cat-tech-text); }
.ann-tip .ann-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.ann-tip .ann-zh { color: var(--muted); font-size: 12px; margin-bottom: 10px; }
.ann-tip .ann-hint {
  font-size: 12px;
  color: var(--muted);
  border-top: 1px dashed var(--line);
  padding-top: 8px;
  margin-top: 8px;
}

/* Inspector control panel — top right */
.inspector {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 1000;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(14px) saturate(180%);
  -webkit-backdrop-filter: blur(14px) saturate(180%);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 14px;
  box-shadow: var(--shadow);
  width: 250px;
  font-size: 13px;
  transition: all 0.3s var(--ease);
}
.inspector h6 {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
  font-weight: 700;
}
.inspector-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.toggle-switch {
  width: 40px; height: 22px;
  background: var(--line);
  border-radius: 999px;
  position: relative;
  transition: background 0.2s;
  cursor: pointer;
  flex-shrink: 0;
  padding: 0;
  border: none;
}
.toggle-switch:focus-visible {
  outline: 3px solid var(--coral);
  outline-offset: 3px;
}
.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 18px; height: 18px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s var(--ease);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
body.inspect-on .toggle-switch { background: var(--coral); }
body.inspect-on .toggle-switch::after { transform: translateX(18px); }

/* Theme toggle button */
.theme-toggle {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 13px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: all 0.15s var(--ease);
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-soft); }
.theme-toggle:focus-visible {
  outline: 3px solid var(--coral-text);
  outline-offset: 2px;
}
.theme-icon-dark { display: none; }
[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="dark"] .theme-icon-dark { display: inline; }
.inspector-search {
  display: block;
  margin-bottom: 10px;
}
.inspector-search input {
  width: 100%;
  font: inherit;
  font-size: 12px;
  padding: 7px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.inspector-search input::placeholder { color: var(--muted); }
.inspector-search input:focus-visible {
  outline: none;
  border-color: var(--coral-text);
  box-shadow: 0 0 0 3px rgba(168, 53, 27, 0.15);
}

.inspector-filters {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}
.cat-chip {
  flex: 1;
  font-size: 11px;
  padding: 5px 8px;
  border-radius: 999px;
  border: 1.5px solid var(--line);
  background: var(--card);
  color: var(--muted);
  cursor: pointer;
  transition: all 0.15s var(--ease);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.cat-chip[aria-pressed="true"].cat-chip-structure {
  background: rgba(74,108,247,0.12);
  border-color: rgba(74,108,247,0.4);
  color: var(--cat-structure-text);
}
.cat-chip[aria-pressed="true"].cat-chip-design {
  background: rgba(157,78,221,0.12);
  border-color: rgba(157,78,221,0.4);
  color: var(--cat-design-text);
}
.cat-chip[aria-pressed="true"].cat-chip-tech {
  background: rgba(6,167,125,0.12);
  border-color: rgba(6,167,125,0.4);
  color: var(--cat-tech-text);
}
.cat-chip:focus-visible {
  outline: 3px solid var(--coral-text);
  outline-offset: 2px;
}

/* Filtered-out annotation (search no match OR category off) */
body.inspect-on [data-annotate].filter-hidden > .annotate-pin {
  display: none;
}
body.inspect-on [data-annotate].filter-hidden:hover {
  outline: none !important;
}
[data-annotate].filter-match-glow > .annotate-pin {
  background: var(--coral);
  color: #fff;
  animation: pin-glow 1.5s ease-in-out infinite;
}
@keyframes pin-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,107,71,0.5); }
  50% { box-shadow: 0 0 0 8px rgba(255,107,71,0); }
}

/* Active highlight — 開 detail 嗰陣對應 element 閃動，提示用戶睇緊邊個位 */
[data-annotate].annotate-active {
  outline: 3px solid var(--coral);
  outline-offset: 6px;
  border-radius: 4px;
  animation: annotate-active-pulse 1.6s ease-in-out infinite;
  position: relative;
  z-index: 1;
}
[data-annotate].annotate-active[data-cat="design"] { outline-color: var(--cat-design); }
[data-annotate].annotate-active[data-cat="tech"]   { outline-color: var(--cat-tech); }
@keyframes annotate-active-pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--coral) 45%, transparent);
    outline-offset: 6px;
  }
  50% {
    box-shadow: 0 0 0 14px color-mix(in srgb, var(--coral) 0%, transparent);
    outline-offset: 10px;
  }
}
[data-annotate].annotate-active > .annotate-pin {
  background: var(--coral);
  color: #fff;
  border-color: #fff;
  transform: scale(1.15);
}
@media (prefers-reduced-motion: reduce) {
  [data-annotate].annotate-active { animation: none; }
}

.legend { display: flex; flex-direction: column; gap: 6px; }
.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--ink-soft);
}
.legend-swatch {
  width: 12px; height: 12px;
  border: 2px dashed var(--cat-structure);
  border-radius: 3px;
}
.legend-item:nth-child(2) .legend-swatch { border-color: var(--cat-design); }
.legend-item:nth-child(3) .legend-swatch { border-color: var(--cat-tech); }
.inspector-hint {
  font-size: 11px;
  color: var(--muted);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  line-height: 1.5;
}

.inspector-progress {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.inspector-progress-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.inspector-progress-row strong {
  color: var(--coral-text);   /* contrast-safe（coral 喺白底唔夠 4.5:1）*/
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}
.inspector-reset {
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: all 0.15s var(--ease);
}
.inspector-reset:hover { color: var(--ink); border-color: var(--ink); }
.inspector-progress-bar {
  height: 4px;
  background: var(--line);
  border-radius: 999px;
  overflow: hidden;
}
.inspector-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--coral) 0%, var(--mint) 100%);
  border-radius: 999px;
  transition: width 0.4s var(--ease);
}

/* visited 嘅 pin 變綠（喺上面 .annotate-pin block 處理） */

/* Detail panel — slide from right */
.detail-panel {
  position: fixed;
  top: 0; right: 0;
  width: 420px;
  max-width: 90vw;
  height: 100vh;
  background: var(--card);
  border-left: 1px solid var(--line);
  box-shadow: -20px 0 60px rgba(0,0,0,0.1);
  z-index: 1001;
  transform: translateX(100%);
  transition: transform 0.4s var(--ease);
  overflow-y: auto;
  padding: 32px;
}
.detail-panel.open { transform: translateX(0); }
.detail-panel .close {
  position: absolute;
  top: 20px; right: 20px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--soft);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  color: var(--ink-soft);
}
.detail-panel .close:hover { background: var(--line); }
.detail-cat {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 14px;
  background: color-mix(in srgb, var(--cat-structure) 14%, transparent);
  color: var(--cat-structure-text);
}
.detail-panel[data-cat="design"] .detail-cat {
  background: color-mix(in srgb, var(--cat-design) 14%, transparent);
  color: var(--cat-design-text);
}
.detail-panel[data-cat="tech"] .detail-cat {
  background: color-mix(in srgb, var(--cat-tech) 14%, transparent);
  color: var(--cat-tech-text);
}
.detail-name {
  font-family: var(--font-display);
  font-size: 32px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.detail-zh { color: var(--muted); margin-bottom: 24px; }
.detail-section { margin-bottom: 24px; }
.detail-section h4 {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
  font-weight: 700;
}
.detail-section p {
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.65;
}
.detail-section ul {
  list-style: none;
}
.detail-section ul li {
  font-size: 14px;
  padding: 6px 0;
  display: flex;
  gap: 10px;
  color: var(--ink-soft);
}
.detail-section ul li::before { content: '·'; color: var(--coral); font-weight: 700; }
.code-block {
  background: var(--ink);
  color: #E8E2D8;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 12.5px;
  padding: 14px 16px;
  border-radius: 10px;
  margin-top: 10px;
  overflow-x: auto;
  line-height: 1.6;
}