/* ============================================
   The Project Museum — Styles
   Refined museum / gallery aesthetic
   ============================================ */

:root {
  /* Dark (default) palette */
  --bg-deep: #12141a;
  --bg-surface: #1a1d26;
  --bg-elevated: #22262f;
  --bg-card: #1e222b;
  --text-primary: #f2efe9;
  --text-secondary: #b8b4ab;
  --text-muted: #8a8680;
  --accent-gold: #c9a86c;
  --accent-gold-dim: #a88b4f;
  --accent-warm: #d4c4a8;
  --border: rgba(201, 168, 108, 0.18);
  --border-strong: rgba(201, 168, 108, 0.35);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  --shadow-soft: 0 4px 16px rgba(0, 0, 0, 0.3);
  --glow: 0 0 40px rgba(201, 168, 108, 0.08);
  --frame: #2a2e38;
  --label-bg: rgba(26, 29, 38, 0.92);
  --focus-ring: #c9a86c;
  --success: #7a9e7e;
  --danger: #c47a7a;

  --font-serif: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Consolas", monospace;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;

  --nav-height: 64px;
  --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 0.2s ease;
}

[data-theme="light"] {
  --bg-deep: #f4f1eb;
  --bg-surface: #ebe7df;
  --bg-elevated: #e2ddd3;
  --bg-card: #f8f5ef;
  --text-primary: #1c1a16;
  --text-secondary: #4a463e;
  --text-muted: #7a756c;
  --accent-gold: #9a7b3c;
  --accent-gold-dim: #7a6230;
  --accent-warm: #5c5346;
  --border: rgba(154, 123, 60, 0.22);
  --border-strong: rgba(154, 123, 60, 0.4);
  --shadow: 0 8px 32px rgba(40, 30, 10, 0.12);
  --shadow-soft: 0 4px 16px rgba(40, 30, 10, 0.08);
  --glow: 0 0 40px rgba(154, 123, 60, 0.06);
  --frame: #d8d2c6;
  --label-bg: rgba(248, 245, 239, 0.95);
  --focus-ring: #9a7b3c;
}

/* Reduced motion */
[data-motion="reduced"] *,
[data-motion="reduced"] *::before,
[data-motion="reduced"] *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Subtle grain overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-warm);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.2;
  color: var(--text-primary);
}

.serif {
  font-family: var(--font-serif);
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.85em;
  letter-spacing: 0.04em;
}

/* ============================================
   Navigation
   ============================================ */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  background: color-mix(in srgb, var(--bg-deep) 88%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: transform var(--transition), opacity var(--transition);
}

.site-nav.hidden {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
}

.nav-brand {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-brand span {
  color: var(--accent-gold);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-family: var(--font-sans);
  font-weight: 500;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 450;
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-gold);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  border-color: var(--border-strong);
  color: var(--accent-gold);
  background: var(--bg-elevated);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text-primary);
  transition: var(--transition-fast);
}

/* ============================================
   Entrance / Hero
   ============================================ */
.entrance {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
  position: relative;
  background:
    radial-gradient(ellipse 80% 60% at 50% 20%, rgba(201, 168, 108, 0.07), transparent 60%),
    var(--bg-deep);
}

.entrance-content {
  max-width: 720px;
  animation: fadeUp 1.1s var(--transition) both;
}

.museum-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 1.25rem;
}

.entrance h1 {
  font-size: clamp(2.8rem, 7vw, 4.5rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.entrance .tagline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 28em;
  margin: 0 auto 2.5rem;
  line-height: 1.65;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent-gold);
  color: #1a1a14;
  border-color: var(--accent-gold);
}

.btn-primary:hover {
  background: var(--accent-gold-dim);
  border-color: var(--accent-gold-dim);
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}

.btn-ghost:hover {
  border-color: var(--border-strong);
  color: var(--text-primary);
  background: var(--bg-elevated);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.entrance-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 3rem;
}

.quick-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.quick-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.quick-links a:hover {
  color: var(--accent-gold);
}

.skip-intro {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================
   Gallery Map / Room Selector
   ============================================ */
.section {
  padding: 5rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header .label {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 0.75rem;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--text-secondary);
  max-width: 36em;
  margin: 0 auto;
}

.gallery-map {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.room-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.25rem;
  text-align: center;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.room-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.room-card:hover,
.room-card:focus-visible {
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.room-card:hover::before,
.room-card:focus-visible::before {
  opacity: 1;
}

.room-card .room-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-gold);
  letter-spacing: 0.12em;
  margin-bottom: 0.5rem;
}

.room-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.4rem;
}

.room-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ============================================
   Exhibition Rooms
   ============================================ */
.room-section {
  padding: 4rem 1.5rem 5rem;
  border-top: 1px solid var(--border);
}

.room-section .room-intro {
  max-width: 1200px;
  margin: 0 auto 2.5rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.room-section .room-intro h2 {
  font-size: 1.85rem;
}

.room-section .room-intro .count {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.exhibits-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

/* Exhibit Card */
.exhibit-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

.exhibit-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.exhibit-card.visited::after {
  content: "Visited";
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--bg-deep);
  color: var(--accent-gold);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  z-index: 2;
}

.exhibit-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  background: var(--bg-elevated);
  overflow: hidden;
}

.exhibit-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--transition);
}

.exhibit-card:hover .exhibit-thumb img {
  transform: scale(1.04);
}

.exhibit-thumb .frame-overlay {
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  pointer-events: none;
  border-radius: 2px;
}

.exhibit-body {
  padding: 1.35rem 1.35rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.65rem;
}

.exhibit-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.exhibit-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--accent-gold);
}

.exhibit-type {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 0.15rem 0.45rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.exhibit-card h3 {
  font-size: 1.35rem;
  margin: 0;
}

.exhibit-summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  flex: 1;
  line-height: 1.55;
}

.exhibit-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.25rem;
}

.tech-tag {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.exhibit-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.badge {
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2rem 0.45rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.badge-featured {
  color: var(--accent-gold);
  border-color: var(--accent-gold);
}

.badge-new {
  color: var(--success);
  border-color: color-mix(in srgb, var(--success) 50%, transparent);
}

.badge-interactive {
  color: #7a9ec9;
  border-color: color-mix(in srgb, #7a9ec9 50%, transparent);
}

.exhibit-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.exhibit-actions .btn {
  flex: 1;
  min-width: 0;
}

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-right: 0.35rem;
}

.status-ongoing { background: #7a9ec9; }
.status-completed { background: var(--success); }
.status-archived { background: var(--text-muted); }

/* ============================================
   Special Exhibition
   ============================================ */
.special-exhibition {
  padding: 5rem 1.5rem;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(201, 168, 108, 0.09), transparent 55%),
    var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
}

.special-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.special-visual {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow), var(--glow);
  aspect-ratio: 4 / 3;
  background: var(--bg-elevated);
}

.special-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.special-visual .spotlight {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(201, 168, 108, 0.15), transparent 55%);
  pointer-events: none;
  animation: spotlightPulse 8s ease-in-out infinite;
}

[data-motion="reduced"] .special-visual .spotlight {
  animation: none;
}

.special-content .label {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 0.75rem;
}

.special-content h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 0.75rem;
}

.special-content .lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.special-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.special-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.timeline {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.timeline h4 {
  font-size: 0.9rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.timeline-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.timeline-list li {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
}

.timeline-list .year {
  font-family: var(--font-mono);
  color: var(--accent-gold);
  min-width: 3.5rem;
}

/* ============================================
   About the Curator
   ============================================ */
.about-section {
  padding: 5rem 1.5rem;
}

.about-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 3rem;
  align-items: start;
}

.curator-portrait {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 2px solid var(--border-strong);
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--accent-gold);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.curator-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-content h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.about-content .role {
  color: var(--accent-gold);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.about-content p {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  max-width: 40em;
}

.interests {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.interest-tag {
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-secondary);
}

/* ============================================
   Visitor Desk
   ============================================ */
.visitor-desk {
  padding: 5rem 1.5rem 6rem;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
}

.desk-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.contact-links a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.contact-links a:hover {
  border-color: var(--border-strong);
  background: var(--bg-elevated);
}

.guestbook {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.guestbook h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.guestbook p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.guestbook textarea {
  width: 100%;
  min-height: 90px;
  padding: 0.75rem;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9rem;
  resize: vertical;
  margin-bottom: 0.75rem;
}

.guestbook textarea:focus {
  outline: none;
  border-color: var(--accent-gold);
}

.guestbook-messages {
  margin-top: 1.5rem;
  max-height: 220px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.guest-msg {
  padding: 0.75rem;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  border-left: 2px solid var(--accent-gold);
}

.guest-msg .meta {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* ============================================
   Exhibit Viewer (Modal)
   ============================================ */
.exhibit-viewer {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: var(--bg-deep);
  display: none;
  flex-direction: column;
  overflow: hidden;
}

.exhibit-viewer.open {
  display: flex;
}

.viewer-header {
  flex-shrink: 0;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
}

.viewer-header .back-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.viewer-header .back-btn:hover {
  color: var(--accent-gold);
}

.viewer-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.viewer-body {
  flex: 1;
  overflow-y: auto;
  padding: 2rem 1.5rem 4rem;
}

.viewer-inner {
  max-width: 900px;
  margin: 0 auto;
}

.case-hero {
  margin-bottom: 2.5rem;
}

.case-hero .meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.case-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 0.75rem;
}

.case-hero .summary {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 40em;
  margin-bottom: 1.5rem;
}

.case-hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 1.5rem;
  cursor: zoom-in;
  position: relative;
}

.case-hero-image img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.case-section {
  margin-bottom: 2.75rem;
}

.case-section h2 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.case-section p,
.case-section li {
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  max-width: 42em;
}

.case-section ul {
  padding-left: 1.25rem;
  margin-bottom: 1rem;
}

.case-section li {
  margin-bottom: 0.4rem;
}

.exhibit-label-box {
  background: var(--label-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 2rem 0;
  font-size: 0.95rem;
}

.exhibit-label-box .label-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--accent-gold);
  margin-bottom: 0.5rem;
}

.exhibit-label-box h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.exhibit-label-box .label-block {
  margin-bottom: 1rem;
}

.exhibit-label-box .label-block strong {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 0.25rem;
}

.image-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.image-gallery figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  cursor: zoom-in;
  background: var(--bg-elevated);
}

.image-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.image-gallery figure:hover img {
  transform: scale(1.03);
}

.image-gallery figcaption {
  padding: 0.5rem 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.demo-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.demo-panel h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

.demo-frame-wrap {
  position: relative;
  background: var(--bg-deep);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  min-height: 280px;
  display: grid;
  place-items: center;
}

.demo-frame-wrap iframe {
  width: 100%;
  height: 480px;
  border: none;
}

.demo-fallback {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
}

.demo-fallback img {
  max-width: 100%;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  opacity: 0.85;
}

.audio-player {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}

.audio-player h3 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.audio-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.audio-progress {
  flex: 1;
  height: 4px;
  background: var(--bg-elevated);
  border-radius: 2px;
  overflow: hidden;
  cursor: pointer;
}

.audio-progress-bar {
  height: 100%;
  background: var(--accent-gold);
  width: 0%;
  transition: width 0.1s linear;
}

.audio-transcript {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
  max-height: 120px;
  overflow-y: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.viewer-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

/* ============================================
   Lightbox
   ============================================ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 3000;
  background: rgba(0, 0, 0, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 1rem;
}

.lightbox.open {
  display: flex;
}

.lightbox-img-wrap {
  position: relative;
  max-width: 95vw;
  max-height: 80vh;
  overflow: hidden;
  cursor: grab;
}

.lightbox-img-wrap:active {
  cursor: grabbing;
}

.lightbox-img-wrap img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  transition: transform 0.15s ease;
  transform-origin: center center;
  user-select: none;
  -webkit-user-drag: none;
}

.lightbox-caption {
  color: #ccc;
  font-size: 0.9rem;
  margin-top: 1rem;
  text-align: center;
  max-width: 600px;
}

.lightbox-controls {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  background: rgba(20, 20, 20, 0.85);
  padding: 0.5rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.lightbox-controls button {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  color: #eee;
  font-size: 1.1rem;
}

.lightbox-controls button:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--accent-gold);
}

.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(30, 30, 30, 0.8);
  color: #fff;
  font-size: 1.4rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

/* ============================================
   Settings / Your Visit panel
   ============================================ */
.settings-panel,
.visit-panel {
  position: fixed;
  top: var(--nav-height);
  right: 0;
  width: min(340px, 100vw);
  max-height: calc(100vh - var(--nav-height));
  background: var(--bg-surface);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow);
  z-index: 1500;
  transform: translateX(100%);
  transition: transform var(--transition);
  overflow-y: auto;
  padding: 1.5rem;
}

.settings-panel.open,
.visit-panel.open {
  transform: translateX(0);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.panel-header h3 {
  font-size: 1.15rem;
}

.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}

.setting-row label {
  font-size: 0.9rem;
}

.toggle {
  width: 44px;
  height: 24px;
  background: var(--bg-elevated);
  border-radius: 999px;
  border: 1px solid var(--border);
  position: relative;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.toggle.on {
  background: var(--accent-gold);
  border-color: var(--accent-gold);
}

.toggle::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--transition-fast);
}

.toggle.on::after {
  transform: translateX(20px);
}

.search-box {
  position: relative;
  margin-bottom: 1.5rem;
}

.search-box input {
  width: 100%;
  padding: 0.7rem 1rem 0.7rem 2.5rem;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent-gold);
}

.search-box svg {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-results {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.search-result {
  padding: 0.65rem 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.9rem;
  transition: border-color var(--transition-fast);
}

.search-result:hover {
  border-color: var(--border-strong);
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  padding: 2rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.site-footer a {
  color: var(--text-secondary);
}

/* ============================================
   Utilities & Animations
   ============================================ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spotlightPulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hidden {
  display: none !important;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 900px) {
  .special-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .about-content p {
    margin-left: auto;
    margin-right: auto;
  }

  .desk-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-surface);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    gap: 0;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 0.85rem 1rem;
  }

  .nav-toggle {
    display: flex;
  }
}

@media (max-width: 600px) {
  .section {
    padding: 3.5rem 1rem;
  }

  .exhibits-grid {
    grid-template-columns: 1fr;
  }

  .entrance {
    padding: 5rem 1rem 3rem;
  }

  .viewer-body {
    padding: 1.5rem 1rem 3rem;
  }
}

/* Print */
@media print {
  .site-nav,
  .settings-panel,
  .visit-panel,
  .lightbox,
  .exhibit-viewer {
    display: none !important;
  }
  body {
    background: white;
    color: black;
  }
}