/* ===================================
   XAVIER MARX — Missing Masterpieces
   Art Direction: Museum gallery meets
   children's treasure hunt. Violet/purple
   primary, warm cream, playful but sharp.
=================================== */

:root {
  --color-bg:              #faf7f2;
  --color-surface:         #ffffff;
  --color-surface-2:       #f3eee6;
  --color-surface-offset:  #ede7dd;
  --color-border:          #d9d0c4;
  --color-divider:         #e5ddd1;
  --color-text:            #1a1225;
  --color-text-muted:      #6b5f7a;
  --color-text-faint:      #a89bb8;
  --color-primary:         #8b5cf6;
  --color-primary-hover:   #7c3aed;
  --color-primary-active:  #6d28d9;
  --color-primary-soft:    #ede9fe;
  --color-primary-softer:  #f5f3ff;
  --color-accent:          #f59e0b;
  --color-accent-soft:     #fef3c7;
  --color-violet:          #8b5cf6;
  --color-violet-light:    #a78bfa;
  --color-violet-dark:     #1a0a3a;
  --color-violet-deep:     #0f0620;
  --color-cream:           #faf7f2;
  --color-warm:            #f5efe5;
  --color-success:         #10b981;
  --color-warning:         #f59e0b;
  --color-danger:          #ef4444;
  --color-shadow: oklch(0.2 0.04 280 / 0.1);

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px var(--color-shadow);
  --shadow-md: 0 4px 16px var(--color-shadow);
  --shadow-lg: 0 12px 40px var(--color-shadow);
  --shadow-glow: 0 0 30px oklch(0.6 0.25 280 / 0.15);

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --text-xs:   clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  --text-xl:   clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl:  clamp(2.5rem, 1rem + 4vw, 4.5rem);

  --space-1:0.25rem; --space-2:0.5rem; --space-3:0.75rem; --space-4:1rem;
  --space-5:1.25rem; --space-6:1.5rem; --space-8:2rem; --space-10:2.5rem;
  --space-12:3rem; --space-16:4rem; --space-20:5rem; --space-24:6rem;

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-hover); }
h1, h2, h3, h4, h5 { font-family: var(--font-display); line-height: 1.2; font-weight: 700; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-surface-2); }
::-webkit-scrollbar-thumb { background: var(--color-violet-light); border-radius: var(--radius-full); }

/* ── HEADER ── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(250, 247, 242, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  background: rgba(250, 247, 242, 0.95);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.back-link {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
  white-space: nowrap;
  transition: color var(--transition);
}
.back-link:hover { color: var(--color-primary); }
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.logo-svg { color: var(--color-primary); flex-shrink: 0; }
.logo-text {
  font-family: var(--font-display);
  font-size: clamp(0.85rem, 0.7rem + 0.5vw, 1rem);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a {
  padding: 0.35rem 0.7rem;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .header-inner { padding: 0.6rem 1rem; }
  .logo-text { font-size: 0.85rem; }
}

/* ── MOBILE NAV TOGGLE ── */
.mobile-nav-toggle {
  display: none;
  width: 36px; height: 36px;
  align-items: center; justify-content: center;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
}
.mobile-nav-toggle:hover { background: var(--color-primary-soft); color: var(--color-primary); }
@media (max-width: 768px) {
  .mobile-nav-toggle { display: flex; }
}
.mobile-nav {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 200;
  background: rgba(26, 10, 58, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.mobile-nav.open { display: flex; }
.mobile-nav-inner {
  background: var(--color-surface);
  width: 280px;
  height: 100%;
  margin-left: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  overflow-y: auto;
  animation: slideInRight 0.3s ease;
}
@keyframes slideInRight {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}
.mobile-nav-close {
  align-self: flex-end;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}
.mobile-nav-inner a {
  display: block;
  padding: 0.75rem 1rem;
  font-size: var(--text-sm);
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: background var(--transition);
}
.mobile-nav-inner a:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

/* ── HERO ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
  background: linear-gradient(165deg, var(--color-violet-deep) 0%, var(--color-violet-dark) 40%, #2d1660 100%);
  overflow: hidden;
}
.hero-bg-art {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.hero-frames {
  position: absolute;
  inset: 0;
}
.frame-float {
  position: absolute;
  border: 2px solid rgba(167, 139, 250, 0.15);
  border-radius: var(--radius-md);
  background: rgba(139, 92, 246, 0.04);
  animation: frameFloat 20s ease-in-out infinite;
}
.frame-float:nth-child(1) { width: 80px; height: 100px; top: 10%; left: 5%; animation-delay: 0s; }
.frame-float:nth-child(2) { width: 120px; height: 80px; top: 15%; right: 8%; animation-delay: -4s; }
.frame-float:nth-child(3) { width: 60px; height: 80px; bottom: 20%; left: 12%; animation-delay: -8s; }
.frame-float:nth-child(4) { width: 100px; height: 130px; bottom: 15%; right: 5%; animation-delay: -12s; }
.frame-float:nth-child(5) { width: 70px; height: 90px; top: 40%; left: 2%; animation-delay: -6s; }
.frame-float:nth-child(6) { width: 90px; height: 70px; top: 55%; right: 3%; animation-delay: -10s; }

@keyframes frameFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); opacity: 0.3; }
  25% { transform: translateY(-15px) rotate(1.5deg); opacity: 0.5; }
  50% { transform: translateY(-5px) rotate(-1deg); opacity: 0.35; }
  75% { transform: translateY(-20px) rotate(2deg); opacity: 0.45; }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}
.hero-eyebrow {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-violet-light);
  margin-bottom: var(--space-4);
}
.hero-title {
  font-size: var(--text-3xl);
  color: #fff;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
  text-shadow: 0 2px 30px rgba(139, 92, 246, 0.4);
}
.hero-subtitle {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.75);
  max-width: 540px;
  margin: 0 auto var(--space-10);
  line-height: 1.55;
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-10);
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.75rem 1.25rem;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(167, 139, 250, 0.2);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
}
.stat-num {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: #fff;
}
.stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-violet-light);
  margin-top: 2px;
}
.stat-unsolved {
  border-color: rgba(245, 158, 11, 0.3);
  background: rgba(245, 158, 11, 0.1);
}
.stat-unsolved .stat-num { color: #f59e0b; }
.stat-unsolved .stat-label { color: #fbbf24; }

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #fff;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}
.cta-btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 30px rgba(139, 92, 246, 0.45);
  color: #fff;
}

/* ── SECTIONS ── */
.section {
  padding: var(--space-20) var(--space-6);
}
.section-dark {
  background: var(--color-violet-dark);
  color: #e8e0f4;
}
.section-dark .section-title { color: #fff; }
.section-dark .section-sub { color: rgba(232, 224, 244, 0.7); }
.section-dark .color-muted { color: rgba(232, 224, 244, 0.5); }

.section-cream { background: var(--color-cream); }
.section-warm { background: var(--color-warm); }

.container {
  max-width: var(--content-wide);
  margin: 0 auto;
}
.container-narrow {
  max-width: var(--content-default);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}
.section-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  color: var(--color-text);
}
.section-sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto;
}
.section-icon {
  font-size: 2rem;
  margin-bottom: var(--space-4);
  display: block;
}

/* ── COLLAPSIBLE ── */
.collapsible-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}
.collapsible-trigger:hover {
  background: var(--color-primary-softer);
  border-color: var(--color-primary);
}
.collapsible-trigger .chevron {
  transition: transform 0.3s ease;
  color: var(--color-primary);
}
.collapsible-trigger.open .chevron {
  transform: rotate(180deg);
}
.collapsible-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.collapsible-content.open {
  max-height: 2000px;
}
.collapsible-body {
  padding: 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}
.collapsible-body p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}
.collapsible-body p:last-child { margin-bottom: 0; }
.moral-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-primary);
  padding: 1.25rem;
  border-left: 3px solid var(--color-primary);
  background: var(--color-primary-softer);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-top: 1rem;
}

/* ── RULES CARDS ── */
.rules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
}
.rule-card {
  padding: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  transition: transform var(--transition), box-shadow var(--transition);
}
.rule-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.rule-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-soft);
  border-radius: var(--radius-md);
}
.rule-text {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.55;
}
.rule-text strong { font-weight: 600; }

/* ── ARTWORK CLUE CARDS ── */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  padding: 1rem 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.filter-bar label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}
.search-input {
  flex: 1;
  min-width: 200px;
  padding: 0.5rem 0.85rem;
  font-size: var(--text-sm);
  font-family: var(--font-body);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition);
}
.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.filter-chip {
  padding: 0.35rem 0.85rem;
  font-size: var(--text-xs);
  font-weight: 500;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  background: var(--color-bg);
  cursor: pointer;
  transition: all var(--transition);
}
.filter-chip:hover,
.filter-chip.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.artwork-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-5);
}
.artwork-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.artwork-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.artwork-card-header {
  padding: 1.25rem 1.25rem 0.75rem;
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}
.artwork-number {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  color: #fff;
  background: var(--color-primary);
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}
.artwork-meta {
  flex: 1;
}
.artwork-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.15rem;
}
.artwork-artist {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.confidence-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
  flex-shrink: 0;
}
.confidence-low {
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fecaca;
}
.confidence-medium {
  background: #fffbeb;
  color: #d97706;
  border: 1px solid #fde68a;
}
.confidence-high {
  background: #ecfdf5;
  color: #059669;
  border: 1px solid #a7f3d0;
}
.artwork-card-body {
  padding: 1rem 1.25rem 1.25rem;
}
.artwork-analysis {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}
.artwork-analysis strong {
  color: var(--color-text);
  font-weight: 600;
}
.artwork-location-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.75rem;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  background: var(--color-surface-2);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
}
.artwork-card.special {
  border-color: var(--color-accent);
  background: linear-gradient(135deg, #fffbeb 0%, var(--color-surface) 100%);
}
.artwork-card.special .artwork-number {
  background: var(--color-accent);
}

.no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem;
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

/* ── FAMOUS ARTWORKS ── */
.famous-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
}
.famous-card {
  padding: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), box-shadow var(--transition);
}
.famous-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.famous-emoji {
  font-size: 1.75rem;
  margin-bottom: 0.6rem;
}
.famous-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.15rem;
}
.famous-artist {
  font-size: var(--text-xs);
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}
.famous-year {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.famous-note {
  margin-top: 0.6rem;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding-top: 0.6rem;
  border-top: 1px solid var(--color-divider);
  line-height: 1.5;
}

/* ── CELEBRITY CARDS ── */
.celeb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-5);
}
.celeb-card {
  padding: 1.5rem;
  background: rgba(139, 92, 246, 0.06);
  border: 1px solid rgba(167, 139, 250, 0.2);
  border-radius: var(--radius-xl);
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}
.section-dark .celeb-card {
  background: rgba(139, 92, 246, 0.1);
  border-color: rgba(167, 139, 250, 0.25);
}
.celeb-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}
.celeb-avatar {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  background: var(--color-primary-soft);
  border-radius: var(--radius-full);
}
.section-dark .celeb-avatar {
  background: rgba(139, 92, 246, 0.2);
}
.celeb-name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.section-dark .celeb-name { color: #fff; }
.celeb-role {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}
.section-dark .celeb-role { color: rgba(232, 224, 244, 0.6); }
.celeb-note {
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 500;
}
.celeb-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 1rem;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-violet-light);
  transition: color var(--transition);
}
.celeb-link:hover { color: #fff; }

/* ── FACT CARDS ── */
.fact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
}
.fact-card {
  padding: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  transition: transform var(--transition);
}
.fact-card:hover { transform: translateY(-2px); }
.fact-icon {
  font-size: 1.25rem;
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-soft);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}
.fact-text {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.55;
}

/* ── THEORIES ── */
.theory-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.theory-card {
  padding: 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  border-left: 4px solid var(--color-primary);
}
.theory-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}
.theory-body {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}
.theory-body p { margin-bottom: 0.75rem; }
.theory-body p:last-child { margin-bottom: 0; }
.theory-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}
.community-note {
  margin-top: var(--space-8);
  padding: 1.25rem;
  background: var(--color-primary-softer);
  border: 1px solid rgba(139, 92, 246, 0.15);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
}
.community-note a { font-weight: 600; }

/* ── ACKNOWLEDGMENTS ── */
.ack-content {
  max-width: var(--content-narrow);
  margin: 0 auto;
}
.ack-text {
  font-size: var(--text-sm);
  color: rgba(232, 224, 244, 0.75);
  line-height: 1.8;
  margin-bottom: var(--space-6);
}
.ack-highlight {
  padding: 1.25rem;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: var(--radius-lg);
  margin-top: var(--space-6);
}
.ack-highlight-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: #f59e0b;
  margin-bottom: 0.35rem;
}
.ack-highlight-body {
  font-size: var(--text-xs);
  color: rgba(232, 224, 244, 0.7);
  line-height: 1.6;
}
.ack-analysis {
  margin-top: var(--space-6);
  padding: 1.25rem;
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--radius-lg);
}
.ack-analysis-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-violet-light);
  margin-bottom: 0.5rem;
}
.ack-analysis-body {
  font-size: var(--text-xs);
  color: rgba(232, 224, 244, 0.65);
  line-height: 1.7;
}
.ack-analysis-body p { margin-bottom: 0.5rem; }
.ack-analysis-body p:last-child { margin-bottom: 0; }

/* ── FOOTER ── */
.site-footer {
  padding: var(--space-12) var(--space-6) var(--space-6);
  background: var(--color-violet-deep);
  color: rgba(232, 224, 244, 0.5);
  text-align: center;
  font-size: var(--text-xs);
}
.footer-inner {
  max-width: var(--content-default);
  margin: 0 auto;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
.footer-links a {
  color: var(--color-violet-light);
  font-size: var(--text-xs);
  font-weight: 500;
  transition: color var(--transition);
}
.footer-links a:hover { color: #fff; }
.footer-director {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(167, 139, 250, 0.15);
}
.footer-director a { color: var(--color-violet-light); }
.footer-back {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: var(--space-6);
  font-weight: 600;
  color: var(--color-violet-light);
  transition: color var(--transition);
}
.footer-back:hover { color: #fff; }
.footer-disclaimer {
  margin-top: var(--space-6);
  font-size: var(--text-xs);
  color: rgba(232, 224, 244, 0.35);
  line-height: 1.6;
}
.ticket-counter {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 0 0.5rem;
  opacity: 0.5;
}
.ticket-count {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-violet-light);
}
.ticket-label {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(232, 224, 244, 0.4);
}

/* ── SCROLL ANIMATIONS ── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── DISCLAIMER BANNER ── */
.disclaimer-banner {
  background: var(--color-accent-soft);
  padding: 0.6rem var(--space-6);
  text-align: center;
  font-size: var(--text-xs);
  color: #92400e;
  border-bottom: 1px solid #fde68a;
}
.disclaimer-banner strong { font-weight: 700; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .section { padding: var(--space-12) var(--space-4); }
  .hero { padding: 5rem 1rem 3rem; min-height: 90vh; }
  .hero-stats { gap: var(--space-2); }
  .stat { padding: 0.5rem 0.75rem; }
  .stat-num { font-size: var(--text-sm); }
  .artwork-grid { grid-template-columns: 1fr; }
  .rules-grid { grid-template-columns: 1fr; }
  .famous-grid { grid-template-columns: 1fr 1fr; }
  .celeb-grid { grid-template-columns: 1fr; }
  .fact-grid { grid-template-columns: 1fr; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .frame-float { display: none; }
}
@media (max-width: 480px) {
  .famous-grid { grid-template-columns: 1fr; }
}