/* ============================================
   CRUX Landing Page Styles
   Design System: Deep teals, warm ambers, charcoal blacks
   NO purple, NO standard AI gradients
   ============================================ */

/* CSS Custom Properties */
:root {
  /* Background Colors */
  --bg-primary: #0a0f0f;
  --bg-secondary: #141c1c;
  --bg-tertiary: #1e2a2a;
  
  /* Text Colors */
  --text-primary: #e8eeee;
  --text-secondary: #8fa3a3;
  --text-tertiary: #5a7070;
  
  /* Accent Colors */
  --accent-verbose: #5b8a9a;
  --accent-compressed: #d4915a;
  --accent-symbol: #f0c674;
  --accent-original: #5b8a9a;
  
  /* Interactive Colors */
  --link: #7ab3c2;
  --link-hover: #9fd4e3;
  
  /* Border Colors */
  --border-default: #2a3838;
  --border-focus: #4a6868;
  
  /* Experimental Warning */
  --experimental: #c27a5a;
  
  /* Typography */
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  
  /* Type Scale (1.25 ratio) */
  --text-xs: 0.64rem;
  --text-sm: 0.8rem;
  --text-base: 1rem;
  --text-lg: 1.25rem;
  --text-xl: 1.563rem;
  --text-2xl: 1.953rem;
  --text-3xl: 2.441rem;
  --text-4xl: 3.052rem;
  
  /* Line Heights */
  --leading-tight: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;
  --space-32: 8rem;
  
  /* Border Variants */
  --border-subtle: #223030;

  /* Border Radius */
  --radius-sm: 3px;
  --radius-lg: 8px;

  /* RGB variants for rgba() usage */
  --accent-compressed-rgb: 212, 145, 90;

  /* Aliases for gallery and common components */
  --surface-2: var(--bg-secondary);
  --surface-3: var(--bg-tertiary);
  --border: var(--border-default);
  --accent: var(--accent-compressed);
  --radius: var(--radius-sm);
  --text-muted: var(--text-tertiary);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Prevent horizontal overflow on mobile */
html, body {
  overflow-x: hidden;
}

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--link);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--link-hover);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-tertiary);
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

/* ============================================
   Hero Section — Compression Chamber
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  background: var(--bg-primary);
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 30%, rgba(91, 138, 154, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(212, 145, 90, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(240, 198, 116, 0.08) 0%, transparent 40%);
}

.hero-overlay {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: var(--space-8);
}

.hero-content {
  margin-bottom: var(--space-16);
}

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(3rem, 12vw, 8rem);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent-symbol);
  text-shadow: 0 0 60px rgba(240, 198, 116, 0.4);
  margin-bottom: var(--space-4);
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-12);
}

.hero-stats {
  max-width: 400px;
  margin: 0 auto;
}

.compression-bar {
  position: relative;
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: var(--space-4);
}

.compression-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-verbose), var(--accent-compressed));
  border-radius: 4px;
  width: 0%;
  transition: width 1s ease-out;
}

.compression-bar-label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.compression-percentage {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--accent-compressed);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-tertiary);
  font-size: var(--text-sm);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}


/* ============================================
   Sticky Nav Bar
   ============================================ */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 15, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-default);
  transform: translateY(-100%);
  transition: transform 0.3s ease;
}

.site-nav.is-visible {
  transform: translateY(0);
}

.site-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-6);
}

.site-nav-brand {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--accent-symbol);
  letter-spacing: 0.08em;
}

.site-nav-brand:hover {
  color: var(--accent-symbol);
}

.site-nav-links {
  display: flex;
  gap: var(--space-6);
}

.site-nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease;
  padding: var(--space-2) 0;
}

.site-nav-link:hover {
  color: var(--text-primary);
}

.site-nav-link.is-active {
  color: var(--accent-compressed);
}

/* ============================================
   Demo Overview Cards
   ============================================ */

@media (max-width: 500px) {
  
  .site-nav-links {
    gap: var(--space-4);
  }
  
  .site-nav-link {
    font-size: var(--text-xs);
  }
}

/* Scroll offset for sticky nav */
:target {
  scroll-margin-top: 60px;
}

/* ============================================
   Sections — General
   ============================================ */

.section {
  padding: var(--space-24) var(--space-6);
}

.section-content {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: var(--text-3xl);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.section-intro {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-12);
  max-width: 600px;
}

/* ============================================
   Parallax Intro
   ============================================ */

.section--intro {
  position: relative;
  overflow: hidden;
  padding: var(--space-32) 0;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.intro-symbols {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.intro-symbol {
  position: absolute;
  font-family: var(--font-mono);
  color: var(--accent-symbol);
  opacity: 0.06;
  font-size: clamp(3rem, 8vw, 8rem);
  font-weight: 700;
  will-change: transform;
  transition: transform 0.1s linear;
}

.intro-symbol:nth-child(1)  { top:  5%; left:  8%; }
.intro-symbol:nth-child(2)  { top: 12%; left: 75%; }
.intro-symbol:nth-child(3)  { top: 30%; left: 20%; }
.intro-symbol:nth-child(4)  { top: 25%; left: 90%; }
.intro-symbol:nth-child(5)  { top: 55%; left:  5%; }
.intro-symbol:nth-child(6)  { top: 60%; left: 65%; }
.intro-symbol:nth-child(7)  { top: 75%; left: 35%; }
.intro-symbol:nth-child(8)  { top: 80%; left: 85%; }
.intro-symbol:nth-child(9)  { top: 40%; left: 50%; }
.intro-symbol:nth-child(10) { top: 90%; left: 15%; }

.section--intro .section-content {
  position: relative;
  z-index: 1;
}

.intro-headline {
  text-align: center;
  margin-bottom: var(--space-16);
}

.intro-title {
  font-size: clamp(var(--text-2xl), 5vw, var(--text-4xl));
  font-weight: 700;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
  color: var(--text-primary);
}

.intro-title em {
  font-style: normal;
  color: var(--accent-compressed);
}

.intro-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

.intro-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  max-width: 900px;
  margin: 0 auto;
}

.intro-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-8) var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background: rgba(20, 28, 28, 0.6);
  backdrop-filter: blur(8px);
  text-align: center;
  will-change: transform, opacity;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease, transform 0.6s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.intro-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.intro-card:nth-child(2) { transition-delay: 0.1s; }
.intro-card:nth-child(3) { transition-delay: 0.2s; }
.intro-card:nth-child(4) { transition-delay: 0.3s; }

.intro-card:hover {
  border-color: var(--accent-compressed);
  box-shadow: 0 0 24px rgba(var(--accent-compressed-rgb), 0.12);
}

.intro-card-icon {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--accent-symbol);
  line-height: 1;
}

.intro-card-label {
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--text-primary);
}

.intro-card-stat {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--accent-compressed);
  font-weight: 700;
}

@media (max-width: 900px) {
  .intro-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 500px) {
  .section--intro {
    padding: var(--space-16) 0;
  }
  .intro-cards {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }
  .intro-card {
    padding: var(--space-6) var(--space-3);
  }
}

.code-block {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-default);
  border-left: 3px solid var(--accent-verbose);
  border-radius: 0 4px 4px 0;
  overflow: hidden;
}

.code-block--verbose {
  border-left-color: var(--accent-verbose);
}

.code-block--crux {
  border-left-color: var(--accent-symbol);
  background: linear-gradient(90deg, rgba(240, 198, 116, 0.05) 0%, var(--bg-tertiary) 5%);
}

.code-block-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-default);
}

.code-block-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.code-block-tokens {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent-verbose);
}

.code-block pre {
  padding: var(--space-4);
  overflow-x: auto;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.code-block code {
  background: transparent;
  padding: 0;
  color: var(--text-primary);
}

/* ============================================
   S2: The Approach — Compression Demo
   ============================================ */

.section--approach {
  background: var(--bg-primary);
}

.compression-demo {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-6);
  align-items: stretch;
  margin-bottom: var(--space-8);
}

@media (max-width: 640px) {
  .compression-demo {
    grid-template-columns: 1fr;
  }
  
  .demo-arrow {
    transform: rotate(90deg);
    justify-self: center;
  }
  
  /* Tabs: full-width on small screens */
  .demo-panel-header--tabbed {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
    padding: var(--space-3);
  }
  
  .demo-panel-tabs {
    width: 100%;
  }
  
  .demo-tab {
    flex: 1;
    text-align: center;
    padding: var(--space-2);
  }
  
  .demo-panel-tokens {
    text-align: center;
  }
  
  /* Lock indicator: tighter on mobile */
  .section-lock-indicator {
    font-size: var(--text-xs);
    padding: var(--space-2);
  }
  
  /* Hint text: wrap on mobile */
  .section-hover-hint {
    font-size: 0.6rem;
    padding: 0 var(--space-2);
  }
  
  /* Smaller max-height on mobile so both panels visible without excessive scroll */
  .demo-panel-content {
    max-height: 350px;
  }
}

.demo-panel {
  background: var(--bg-secondary);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-default);
  min-width: 0;
}

.demo-panel--before {
  border-left: 3px solid var(--accent-verbose);
}

.demo-panel--after {
  border-left: 3px solid var(--accent-symbol);
}

.demo-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-default);
}

.demo-panel-title {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.demo-panel-tokens {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.demo-panel--before .demo-panel-tokens {
  color: var(--accent-verbose);
}

.demo-panel--after .demo-panel-tokens {
  color: var(--accent-symbol);
}

.demo-panel-content {
  position: relative;
  padding: var(--space-4);
  max-height: 500px;
  overflow-y: auto;
}

.demo-panel-content--hidden {
  display: none;
}

.demo-panel-content pre {
  font-size: 0.875rem;
  line-height: var(--leading-relaxed);
}

.demo-panel-content code {
  background: transparent;
  padding: 0;
}

/* Tabbed panel header */
.demo-panel-header--tabbed {
  flex-wrap: wrap;
  gap: var(--space-2);
}

.demo-panel-tabs {
  display: flex;
  gap: 0;
}

.demo-tab {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.demo-tab:hover {
  color: var(--text-secondary);
}

.demo-tab--active {
  color: var(--text-primary);
  border-bottom-color: var(--accent-verbose);
}

.demo-tab[data-target="decompressed"].demo-tab--active {
  border-bottom-color: var(--link);
}

.demo-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-compressed);
}

.demo-reduction {
  text-align: center;
}

.reduction-bar {
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
  max-width: 400px;
  margin: 0 auto var(--space-4);
}

.reduction-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-verbose), var(--accent-compressed));
  border-radius: 4px;
  width: 83%;
}

.reduction-text {
  font-size: var(--text-lg);
  color: var(--text-secondary);
}

.reduction-text strong {
  color: var(--accent-compressed);
}

/* ============================================
   S2b: Section Linking — Hover / Click / Lock
   ============================================ */

.compression-demo .code-lines tr td {
  transition: background-color 0.2s ease, opacity 0.2s ease;
}

.compression-demo tr[data-section] td {
  cursor: pointer;
}

.compression-demo tr.section-active .code-line-number,
.compression-demo tr.section-active .code-line-content {
  background-color: rgba(var(--accent-compressed-rgb), 0.15);
}

.compression-demo tr.section-dimmed .code-line-number,
.compression-demo tr.section-dimmed .code-line-content {
  opacity: 0.3;
}

/* Hint text below the demo */
.section-hover-hint {
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: var(--space-3);
  margin-bottom: var(--space-6);
  letter-spacing: 0.02em;
}

/* Lock indicator badge */
.section-lock-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: rgba(var(--accent-compressed-rgb), 0.12);
  border-bottom: 1px solid rgba(var(--accent-compressed-rgb), 0.3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent-compressed);
  animation: lockSlideIn 0.2s ease;
}

@keyframes lockSlideIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.section-lock-icon {
  flex-shrink: 0;
  color: var(--accent-compressed);
}

.section-lock-name {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-lock-close {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text-tertiary);
  font-size: var(--text-base);
  cursor: pointer;
  padding: 0 var(--space-1);
  line-height: 1;
  transition: color 0.15s ease;
}

.section-lock-close:hover {
  color: var(--text-primary);
}

/* Locked state — amber border pulse on the left panel */
.section-locked .demo-panel--before {
  border-left-color: var(--accent-compressed);
}

/* ============================================
   S3: The Notation — Spec Explorer
   ============================================ */

.section--notation {
  background: var(--bg-secondary);
}

.spec-explorer {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.spec-section {
  border: 1px solid var(--border-default);
  border-radius: 4px;
  overflow: hidden;
}

.spec-section-header {
  display: flex;
  align-items: center;
  width: 100%;
  padding: var(--space-4);
  background: var(--bg-tertiary);
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--text-primary);
  text-align: left;
  transition: background 0.2s ease;
}

.spec-section-header:hover {
  background: var(--bg-secondary);
}

.spec-section-title {
  flex: 1;
  font-weight: 500;
}

.spec-section-symbols {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--accent-symbol);
  margin-right: var(--space-4);
}

.spec-section-toggle {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--text-tertiary);
  width: 24px;
  text-align: center;
  transition: transform 0.2s ease;
}

.spec-section.is-open .spec-section-toggle {
  transform: rotate(45deg);
}

.spec-section-content {
  display: none;
  padding: var(--space-4);
  background: var(--bg-primary);
  border-top: 1px solid var(--border-default);
}

.spec-section.is-open .spec-section-content {
  display: block;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
}

.spec-table td {
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--border-default);
  vertical-align: top;
  font-size: var(--text-sm);
}

.spec-table td:first-child {
  font-family: var(--font-mono);
  color: var(--accent-symbol);
  width: 20%;
  white-space: nowrap;
}

.spec-table td:nth-child(2) {
  color: var(--text-secondary);
  width: 40%;
}

.spec-table td:last-child {
  font-family: var(--font-mono);
  color: var(--text-muted);
  font-size: var(--text-xs);
}

.spec-table tr:last-child td {
  border-bottom: none;
}

.spec-example {
  margin-top: var(--space-4);
  padding: var(--space-3);
  background: var(--bg-tertiary);
  border-radius: 4px;
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.spec-link {
  display: inline-flex;
  align-items: center;
  font-weight: 500;
  color: var(--accent-compressed);
}

/* ============================================
   S4: Quickstart
   ============================================ */

.section--quickstart {
  background: var(--bg-primary);
}

.experimental-warning {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  background: rgba(194, 122, 90, 0.1);
  border: 1px solid var(--experimental);
  border-radius: 8px;
  margin-bottom: var(--space-12);
}

.warning-icon {
  font-size: var(--text-xl);
}

.warning-text {
  font-size: var(--text-base);
  color: var(--text-primary);
}

.warning-text strong {
  color: var(--experimental);
}

.install-section,
.installed-section,
.usage-section {
  margin-bottom: var(--space-12);
}

.install-section h3,
.installed-section h3,
.usage-section h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}

.prereqs {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}

.code-block--install {
  border-left-color: var(--accent-compressed);
  max-width: 700px;
}

.copy-button {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-default);
  border-radius: 4px;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.copy-button:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.copy-button.copied {
  background: rgba(212, 145, 90, 0.2);
  color: var(--accent-compressed);
  border-color: var(--accent-compressed);
}

/* CRUX output copy overlay */
.crux-copy-btn {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-default);
  border-radius: 4px;
  color: var(--text-secondary);
  cursor: pointer;
  opacity: 0;
  transition: all 0.2s ease;
  z-index: 2;
}

.image-demo-card-content:hover .crux-copy-btn,
.demo-panel-content:hover .crux-copy-btn {
  opacity: 1;
}

.crux-copy-btn:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-focus);
}

.crux-copy-btn.copied {
  opacity: 1;
  background: rgba(212, 145, 90, 0.2);
  color: var(--accent-compressed);
  border-color: var(--accent-compressed);
}

/* File Tree */
.file-tree {
  display: grid;
  gap: var(--space-2);
  max-width: 600px;
}

.file-tree-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border-radius: 4px;
  border-left: 2px solid var(--accent-verbose);
}

.file-tree-item code {
  font-size: var(--text-sm);
  color: var(--accent-symbol);
  background: var(--bg-tertiary);
}

.file-tree-item span {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* Usage Steps */
.usage-steps {
  list-style: none;
  display: grid;
  gap: var(--space-4);
  max-width: 500px;
}

.usage-steps li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--accent-compressed);
  color: var(--bg-primary);
  font-family: var(--font-mono);
  font-weight: 600;
  border-radius: 50%;
  flex-shrink: 0;
}

.step-content {
  padding-top: var(--space-1);
  color: var(--text-secondary);
}

.step-content code {
  color: var(--accent-symbol);
}

/* Quickstart Links */
.quickstart-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: 6px;
  font-weight: 500;
  font-size: var(--text-base);
  transition: all 0.2s ease;
}

.btn--primary {
  background: var(--accent-compressed);
  color: var(--bg-primary);
}

.btn--primary:hover {
  background: var(--accent-symbol);
  color: var(--bg-primary);
}

.btn--secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
}

.btn--secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--border-focus);
  color: var(--link-hover);
}

/* ============================================
   S5: Footer
   ============================================ */

.footer {
  padding: var(--space-16) var(--space-6);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-default);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  gap: var(--space-8);
  text-align: center;
}

.footer-title {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  color: var(--accent-symbol);
  margin-bottom: var(--space-2);
}

.footer-subtitle {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.footer-description {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--link-hover);
}

.footer-meta {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

/* ============================================
   S3b: Image Compression
   ============================================ */

.section--image-compression {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.image-demo {
  margin-top: var(--space-10);
}

.image-demo-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-6);
  justify-content: center;
}

.image-demo-left {
  flex: 1;
  min-width: 0;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.image-demo-left .model-selector {
  margin: 0;
}

.image-demo-card--decompressed {
  border-color: var(--accent-original);
}

.image-demo-arrows {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  padding-top: 120px;
}

.image-demo-arrow {
  color: var(--accent-compressed);
}

.image-demo-arrow-reverse {
  transform: scaleX(-1);
  color: var(--accent-original);
  margin-top: calc(var(--space-6) * 1.5);
}

.image-demo-card {
  flex: 1;
  min-width: 0;
  max-width: 480px;
  border: none;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: transparent;
}

.image-demo-card--crux {
  border: 1px solid var(--accent-compressed);
  box-shadow: 0 0 20px rgba(var(--accent-compressed-rgb), 0.15);
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  max-height: 420px;
}

.image-demo-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.image-demo-card--crux .image-demo-card-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  padding: var(--space-3) var(--space-4);
}

.image-demo-card-label {
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.image-demo-card-size {
  color: var(--accent-compressed);
  font-weight: 700;
}

.image-demo-card-content {
  position: relative;
}

.image-demo-card--crux .image-demo-card-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow-y: auto;
}

.image-demo-card-content img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
}

.image-demo-card-content pre {
  margin: 0;
  padding: var(--space-4);
  font-size: var(--text-xs);
  line-height: 1.5;
  overflow-x: auto;
  overflow-y: auto;
  max-height: 400px;
  max-width: 100%;
}

.image-demo-card--crux .image-demo-card-content pre {
  flex: 1;
  max-height: none;
}

.image-demo-card-content pre code {
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.image-demo-reduction {
  display: flex;
  justify-content: center;
  gap: var(--space-10);
  margin: var(--space-8) 0;
  padding: var(--space-6);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.image-demo-stat {
  text-align: center;
}

.image-demo-stat-value {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--accent-compressed);
  font-family: var(--font-mono);
}

.image-demo-stat-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

.image-demo-decompressed h3 {
  font-size: var(--text-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.image-demo-decompressed-intro {
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  max-width: 600px;
}

.image-demo-decompressed-intro code {
  color: var(--accent-compressed);
  background: var(--bg-secondary);
  padding: 0.1em 0.4em;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.image-demo-more {
  margin-top: var(--space-16);
  border-top: 1px solid var(--border-default);
  padding-top: var(--space-12);
}

.image-demo-more h3 {
  font-size: var(--text-2xl);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.image-demo-more-intro {
  color: var(--text-secondary);
  margin-bottom: var(--space-10);
  max-width: 700px;
}

.image-demo-gallery {
  display: grid;
  gap: var(--space-16);
}

.image-demo-gallery-item {
  padding: var(--space-8);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.image-demo-gallery-header {
  margin-bottom: var(--space-6);
}

.image-demo-gallery-label {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent-compressed);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}


.image-demo-usage {
  margin-top: var(--space-10);
}

.image-demo-usage h3 {
  font-size: var(--text-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

/* ============================================
   S3c: Code Compression
   ============================================ */

.section--code-compression {
  background: var(--bg-secondary);
}

.code-demo {
  margin-top: var(--space-10);
}

.code-demo-row {
  display: flex;
  align-items: stretch;
  gap: var(--space-6);
  justify-content: center;
}

.code-demo-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent-compressed);
}

.code-demo-card {
  flex: 1;
  min-width: 0;
  max-width: 520px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
}

.code-demo-card--crux {
  border-color: var(--accent-compressed);
  box-shadow: 0 0 20px rgba(var(--accent-compressed-rgb), 0.15);
}

.code-demo-card--decompressed {
  max-width: 640px;
  border-color: var(--accent-verbose);
  box-shadow: 0 0 16px rgba(91, 138, 154, 0.12);
}

.code-demo-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  flex-shrink: 0;
}

.code-demo-card-label {
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.code-demo-card-meta {
  color: var(--accent-compressed);
  font-weight: 700;
}

.code-demo-card--decompressed .code-demo-card-meta {
  color: var(--accent-verbose);
}

.code-demo-card-content {
  position: relative;
  flex: 1;
}

.code-demo-card-content pre {
  margin: 0;
  padding: var(--space-4);
  font-size: var(--text-xs);
  line-height: 1.55;
  overflow-x: auto;
  overflow-y: auto;
  max-height: 600px;
}

.code-demo-card-content pre code {
  font-family: var(--font-mono);
  color: var(--text-primary);
  background: transparent;
  padding: 0;
}

.code-demo-card-content:hover .crux-copy-btn {
  opacity: 1;
}

/* Code demo reduction stats bar */
.code-demo-reduction {
  display: flex;
  justify-content: center;
  gap: var(--space-10);
  margin: var(--space-8) 0;
  padding: var(--space-6);
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.code-demo-stat {
  text-align: center;
}

.code-demo-stat-value {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--accent-compressed);
  font-family: var(--font-mono);
}

.code-demo-stat-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

/* Decompressed section */
.code-demo-decompressed {
  margin-top: var(--space-10);
}

.code-demo-decompressed h3 {
  font-size: var(--text-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.code-demo-decompressed-intro {
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  max-width: 700px;
  line-height: var(--leading-relaxed);
}

.code-demo-decompressed-intro code {
  color: var(--accent-compressed);
  background: var(--bg-primary);
  padding: 0.1em 0.4em;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.code-demo-decompressed-intro em {
  color: var(--accent-symbol);
  font-style: italic;
}

.code-demo-decompressed-row {
  display: flex;
  justify-content: center;
}

/* Highlights grid */
.code-demo-highlights {
  margin-top: var(--space-12);
  border-top: 1px solid var(--border-default);
  padding-top: var(--space-10);
}

.code-demo-highlights h3 {
  font-size: var(--text-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-6);
}

.code-demo-highlights-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.code-demo-highlight {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.code-demo-highlight-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(var(--accent-compressed-rgb), 0.12);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--accent-compressed);
  flex-shrink: 0;
}

.code-demo-highlight-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.code-demo-highlight-text strong {
  font-size: var(--text-base);
  color: var(--text-primary);
}

.code-demo-highlight-text span {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.code-demo-highlight-text code {
  color: var(--accent-symbol);
  background: var(--bg-secondary);
  padding: 0.1em 0.3em;
  border-radius: var(--radius-sm);
  font-size: 0.85em;
}

/* Code demo usage / how it works */
.code-demo-usage {
  margin-top: var(--space-10);
}

.code-demo-usage h3 {
  font-size: var(--text-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

/* ============================================
   S3d: URL Compression
   ============================================ */

.section--url-compression {
  background: var(--bg-primary);
}

.url-demo {
  margin-top: var(--space-10);
}

.url-demo-command {
  margin-bottom: var(--space-6);
}

.url-demo-command-bar {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.url-demo-command-prompt {
  color: var(--accent-compressed);
  font-weight: 700;
}

.url-demo-command-text {
  color: var(--text-primary);
  background: transparent;
  padding: 0;
}

.url-demo-card-content--iframe {
  flex: 1;
  min-height: 0;
}

.url-demo-card-content--iframe iframe {
  width: 100%;
  height: 450px;
  border: none;
  display: block;
}

.url-demo-row {
  display: flex;
  align-items: stretch;
  gap: var(--space-6);
  justify-content: center;
}

.url-demo-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent-compressed);
}

.url-demo-card {
  flex: 1;
  min-width: 0;
  max-width: 520px;
  max-height: 500px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-secondary);
}

.url-demo-card--crux {
  border-color: var(--accent-compressed);
  box-shadow: 0 0 20px rgba(var(--accent-compressed-rgb), 0.15);
}

.url-demo-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  flex-shrink: 0;
}

.url-demo-card-label {
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.url-demo-card-meta {
  color: var(--accent-compressed);
  font-weight: 700;
}

.url-demo-card-content {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.url-demo-card-content pre {
  margin: 0;
  padding: var(--space-4);
  font-size: var(--text-xs);
  line-height: 1.55;
}

.url-demo-card-content pre code {
  font-family: var(--font-mono);
  color: var(--text-primary);
  background: transparent;
  padding: 0;
}

.url-demo-card-content:hover .crux-copy-btn {
  opacity: 1;
}

.url-demo-reduction {
  display: flex;
  justify-content: center;
  gap: var(--space-10);
  margin: var(--space-8) 0;
  padding: var(--space-6);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.url-demo-stat {
  text-align: center;
}

.url-demo-stat-value {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--accent-compressed);
  font-family: var(--font-mono);
}

.url-demo-stat-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

.url-demo-decompressed {
  margin-top: var(--space-10);
}

.url-demo-decompressed h3 {
  font-size: var(--text-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.url-demo-decompressed-intro {
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  max-width: 700px;
  line-height: var(--leading-relaxed);
}

.url-demo-decompressed-intro code {
  color: var(--accent-compressed);
  background: var(--bg-secondary);
  padding: 0.1em 0.4em;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.url-demo-decompressed-intro em {
  color: var(--accent-symbol);
  font-style: italic;
}

.url-demo-decompressed-panels {
  margin-top: var(--space-4);
}

.url-demo-decompressed-iframe-wrapper {
  margin-top: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 600px;
}

.url-demo-decompressed-iframe-wrapper iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.url-demo-usage {
  margin-top: var(--space-10);
}

.url-demo-usage h3 {
  font-size: var(--text-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 768px) {
  /* Image demo: stack rows vertically */
  .image-demo-row {
    flex-direction: column;
  }
  
  .image-demo-arrows {
    flex-direction: row;
    justify-content: center;
  }

  .image-demo-arrow {
    transform: rotate(90deg);
  }
  
  .image-demo-left {
    max-width: 100%;
    width: 100%;
  }
  
  .image-demo-card {
    max-width: 100%;
    width: 100%;
  }
  
  .image-demo-reduction {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .image-demo-gallery-item {
    padding: var(--space-4);
    overflow: hidden;
  }
  
  .image-demo-more-intro {
    max-width: 100%;
  }
  
  .image-demo-card-content pre {
    font-size: 0.6rem;
    max-height: 300px;
  }
  
  /* Code demo: stack rows vertically */
  .code-demo-row {
    flex-direction: column;
  }
  
  .code-demo-arrow {
    transform: rotate(90deg);
  }
  
  .code-demo-card {
    max-width: 100%;
    width: 100%;
  }
  
  .code-demo-card--decompressed {
    max-width: 100%;
  }
  
  .code-demo-reduction {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .code-demo-highlights-grid {
    grid-template-columns: 1fr;
  }
  
  /* URL demo: stack rows vertically */
  .url-demo-row {
    flex-direction: column;
  }
  
  .url-demo-arrow {
    transform: rotate(90deg);
  }
  
  .url-demo-card {
    max-width: 100%;
    width: 100%;
  }
  
  .url-demo-reduction {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  /* Ensure section content doesn't overflow */
  .section-content {
    overflow-x: hidden;
  }
}

@media (max-width: 600px) {
  .hero-title {
    font-size: 3rem;
  }
  
  .section {
    padding: var(--space-12) var(--space-4);
  }
  
  .section-content {
    overflow-x: hidden;
  }
  
  .section-title {
    font-size: var(--text-2xl);
  }
  
  .section-intro {
    max-width: 100%;
  }
  
  .quickstart-links {
    flex-direction: column;
  }
  
  .btn {
    justify-content: center;
  }
  
  /* Compression demo panels: tighter on small screens */
  .demo-panel-content {
    padding: var(--space-2);
  }
  
  .demo-panel-content pre {
    font-size: 0.75rem;
  }
  
  /* Line numbers: narrower gutter */
  .code-line-number {
    min-width: 2em;
    padding-right: var(--space-2);
  }
  
  .code-line-content {
    padding-left: var(--space-2);
  }
  
  /* Spec explorer: symbols wrap */
  .spec-section-symbols {
    display: none;
  }
  
  /* Image demo: tighter spacing */
  .image-demo-stat-value {
    font-size: var(--text-2xl);
  }
  
  /* Code demo: tighter spacing */
  .code-demo-stat-value {
    font-size: var(--text-2xl);
  }
  
  .code-demo-card-content pre {
    font-size: 0.6rem;
  }
  
  /* URL demo: tighter spacing */
  .url-demo-stat-value {
    font-size: var(--text-2xl);
  }
  
  .url-demo-card-content pre {
    font-size: 0.6rem;
  }
}

/* ============================================
   Animations
   ============================================ */

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

.hero-content {
  animation: fadeIn 1s ease-out;
}

/* Scroll-triggered animations handled by JS */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Line Numbers
   ============================================ */

/* Table-based line numbers — numbers not selectable on copy */
.code-lines {
  border-collapse: collapse;
  border-spacing: 0;
  width: 100%;
  table-layout: auto;
  max-width: 100%;
}

.code-line-number {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  text-align: right;
  vertical-align: top;
  padding-right: var(--space-3);
  white-space: nowrap;
  width: 1%;
  min-width: 2.5em;
  color: var(--text-tertiary);
  opacity: 0.5;
  font-size: inherit;
  line-height: inherit;
  border-right: 1px solid var(--border-default);
}

.code-line-number::before {
  content: attr(data-line);
}

.code-line-content {
  padding-left: var(--space-3);
  white-space: pre;
  vertical-align: top;
  line-height: inherit;
}

/* Make code with line numbers use full width */
code.has-line-numbers {
  display: block;
}

/* ============================================
   Syntax Highlighting Overrides (highlight.js)
   ============================================ */

/* Make highlight.js backgrounds transparent so our card backgrounds show */
pre code.hljs {
  background: transparent;
  padding: 0;
}

/* Tune highlight.js colors to match site palette */
.hljs-keyword {
  color: var(--accent-compressed);
}

.hljs-string {
  color: var(--accent-symbol);
}

.hljs-built_in {
  color: var(--accent-verbose);
}

.hljs-comment {
  color: var(--text-tertiary);
}

.hljs-meta {
  color: var(--accent-compressed);
  font-weight: 600;
}

.hljs-number {
  color: #d19a66;
}

.hljs-attr {
  color: #e5c07b;
}

.hljs-title.function_ {
  color: #61afef;
}

.hljs-variable {
  color: #e06c75;
}

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

/* ── Gallery System ── */

.gallery {
  position: relative;
  padding: 0 var(--space-12);
}

.gallery-items {
  width: 100%;
  position: relative;
  overflow: hidden;
}

.gallery-item {
  opacity: 0;
  transform: translateX(30px);
  pointer-events: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.gallery-item--active {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.gallery-item-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
  text-align: center;
}

/* Carousel Navigation */

.gallery-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.gallery-nav:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--accent-compressed);
}

.gallery-nav--prev {
  left: -20px;
}

.gallery-nav--next {
  right: -20px;
}

/* Dot Indicators */

.gallery-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: var(--space-6);
}

.gallery-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--border-default);
  background: var(--bg-secondary);
  cursor: pointer;
  padding: 0;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.gallery-dot:hover {
  border-color: var(--accent-compressed);
  transform: scale(1.2);
}

.gallery-dot--active {
  background: var(--accent-compressed);
  border-color: var(--accent-compressed);
}

/* Model Selector */

.model-selector {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin: var(--space-4) 0;
  flex-wrap: wrap;
}

.model-selector-btn {
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 500;
  font-family: inherit;
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: 999px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.model-selector-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.model-selector-btn--active {
  background: var(--accent-compressed);
  border-color: var(--accent-compressed);
  color: #fff;
}

/* Image Placeholder */

.image-demo-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  font-style: italic;
}

.image-demo-card--placeholder {
  opacity: 0.6;
}

/* Gallery responsive */

@media (max-width: 768px) {
  .gallery {
    padding: 0;
  }

  .gallery-nav {
    display: none;
  }

  .gallery-dots {
    margin-top: var(--space-4);
  }
}