/* ============================================
   Sigil Language Website Styles
   Corporate Goth + Phthalo Green (Accessible)
   ============================================ */

/* CSS Variables */
:root {
  /* Dark Gothic Backgrounds */
  --bg-primary: #050507;
  --bg-secondary: #0a0a0d;
  --bg-tertiary: #0f0f12;
  --bg-card: #0c0c0f;
  --bg-elevated: #111114;

  /* Muted Gothic Text */
  --text-primary: #e8e8ec;
  --text-secondary: #a0a0aa;
  --text-muted: #6c6c76;

  /* Phthalo Green Accents - WCAG AA compliant */
  --accent: #14A088;           /* Main accent: 6.1:1 on bg-primary */
  --accent-light: #1AB89D;     /* Lighter for hover */
  --accent-dark: #0E6B5C;      /* Original phthalo for backgrounds */
  --accent-hover: #20C4AB;
  --accent-glow: rgba(20, 160, 136, 0.25);
  --accent-subtle: rgba(20, 160, 136, 0.08);

  /* Evidentiality colors - WCAG AA compliant */
  --known: #14A088;            /* 6.1:1 */
  --known-bg: rgba(20, 160, 136, 0.12);
  --uncertain: #D4A017;        /* 5.8:1 - brighter gold */
  --uncertain-bg: rgba(212, 160, 23, 0.12);
  --reported: #6B9BD1;         /* 5.2:1 - brighter blue */
  --reported-bg: rgba(107, 155, 209, 0.12);
  --paradox: #D47171;          /* 5.0:1 - brighter red */
  --paradox-bg: rgba(212, 113, 113, 0.12);

  /* Code colors */
  --code-bg: #030305;
  --code-border: #1a1a1f;
  --code-keyword: #14A088;
  --code-function: #7FA8C9;
  --code-type: #6BAA87;
  --code-string: #C49A6C;
  --code-number: #B8956D;
  --code-comment: #7a7a86;  /* 4.6:1 contrast on --code-bg */
  --code-operator: #9A8BB0;
  --code-morpheme: #1AB89D;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Typography */
  --font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'IBM Plex Mono', 'JetBrains Mono', 'SF Mono', monospace;

  /* Semantic colors */
  --text-on-accent: #000000;      /* Text on accent-colored backgrounds */
  --text-on-dark: #ffffff;        /* Text on dark backgrounds */

  /* Borders */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

/* Offset for sticky nav when scrolling to anchors */
[id] {
  scroll-margin-top: 80px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* ============================================
   Accessibility
   ============================================ */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--accent);
  color: var(--text-on-accent);
  font-weight: 600;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
}

/* Screen reader only - visually hidden but accessible */
.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;
}

/* Global focus styles for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Remove default focus for mouse users */
:focus:not(:focus-visible) {
  outline: none;
}

/* Specific focus styles for buttons */
.btn:focus-visible {
  outline: 2px solid var(--accent-light);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--accent-glow);
}

/* Focus styles for nav links */
.nav-links a:focus-visible,
.footer-column a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

/* ============================================
   Container
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ============================================
   Navigation
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(5, 5, 7, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(20, 160, 136, 0.12);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.nav.nav-scrolled {
  background: rgba(5, 5, 7, 0.98);
  border-bottom-color: rgba(20, 160, 136, 0.2);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  font-size: 1.25rem;
}

.logo-icon {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

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

.version-badge {
  font-size: 0.6875rem;
  font-weight: 500;
  padding: 0.125rem 0.375rem;
  background: var(--accent-subtle);
  color: var(--accent);
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-github {
  display: flex;
  align-items: center;
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.nav-github:hover {
  background: rgba(255, 255, 255, 0.05);  /* Subtle glow, intentionally hardcoded */
}

.nav-coming-soon {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  opacity: 0.7;
}

.soon-badge {
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.125rem 0.375rem;
  background: var(--text-muted);
  color: var(--bg-primary);
  border-radius: var(--radius-sm);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform var(--transition-fast);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--code-border);
    padding: var(--space-lg);
    gap: var(--space-md);
  }

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

  .nav-toggle {
    display: flex;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
  }
}

/* ============================================
   Announcement Banner
   ============================================ */
.announcement-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 110;
  background: linear-gradient(90deg, var(--accent-dark) 0%, var(--accent) 100%);
  padding: var(--space-sm) var(--space-lg);
  text-align: center;
}

.announcement-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.announcement-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.5rem;
  background: rgba(0, 0, 0, 0.2);
  color: var(--text-on-dark);
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

.announcement-text {
  font-size: 0.9375rem;
  color: var(--text-on-dark);
  margin: 0;
}

.announcement-text strong {
  font-weight: 600;
}

.announcement-link {
  color: var(--text-on-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
  margin-left: var(--space-sm);
  white-space: nowrap;
}

.announcement-link:hover {
  opacity: 0.85;
}

/* Adjust nav position when banner is present */
.announcement-banner + .nav {
  top: 40px;
}

/* Adjust main content offset for banner + nav */
body:has(.announcement-banner) [id] {
  scroll-margin-top: 120px;
}

@media (max-width: 768px) {
  .announcement-banner {
    padding: var(--space-xs) var(--space-md);
  }

  .announcement-container {
    gap: var(--space-sm);
  }

  .announcement-text {
    font-size: 0.8125rem;
  }

  .announcement-link {
    display: block;
    margin-left: 0;
    margin-top: var(--space-xs);
  }

  .announcement-banner + .nav {
    top: 56px;
  }
}

/* ============================================
   Section Layout
   ============================================ */
.section {
  padding: var(--space-4xl) 0;
}

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

.section-agents {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

.section-ai {
  background: var(--bg-tertiary);
  border-top: 1px solid var(--code-border);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: var(--space-md);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  padding: 8rem 0 var(--space-3xl);
  text-align: center;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 600px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  position: relative;
}

.hero-logo {
  margin-bottom: var(--space-md);
}

.hero-logo img {
  width: 140px;
  height: 140px;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.hero-highlight {
  color: var(--accent);
}

.hero-problem {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  line-height: 1.8;
}

.hero-problem strong {
  color: var(--text-primary);
}

.hero-solution {
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-lg);
  text-align: left;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.hero-solution > p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.hero-solution em {
  color: var(--accent);
  font-style: normal;
  font-weight: 500;
}

.evidence-list {
  list-style: none;
}

.evidence-list li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) 0;
  color: var(--text-secondary);
}

.evidence-list strong {
  color: var(--text-primary);
}

/* Evidentiality Markers */
.ev {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.ev-known {
  background: var(--known-bg);
  color: var(--known);
}

.ev-uncertain {
  background: var(--uncertain-bg);
  color: var(--uncertain);
}

.ev-reported {
  background: var(--reported-bg);
  color: var(--reported);
}

.ev-paradox {
  background: var(--paradox-bg);
  color: var(--paradox);
}

.ev-large {
  width: 2.5rem;
  height: 2.5rem;
  font-size: 1.25rem;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-dark);
  color: var(--text-on-dark);
}

.btn-primary:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
}

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

.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.0625rem;
}

/* ============================================
   Code Blocks
   ============================================ */
.code-block {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.7;
  overflow-x: auto;
  position: relative;
}

/* Scroll indicator gradient for mobile */
@media (max-width: 768px) {
  .code-block::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 40px;
    background: linear-gradient(90deg, transparent, var(--code-bg));
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast);
  }

  .code-block:not(:hover)::after {
    opacity: 1;
  }
}

.code-block code {
  display: block;
}

.code-sm {
  padding: var(--space-md);
  font-size: 0.8125rem;
}

.code-lg {
  padding: var(--space-xl);
  font-size: 0.9375rem;
}

/* Syntax Highlighting */
.keyword { color: var(--code-keyword); }
.function { color: var(--code-function); }
.type { color: var(--code-type); }
.string { color: var(--code-string); }
.number { color: var(--code-number); }
.comment { color: var(--code-comment); font-style: italic; }
.operator { color: var(--code-operator); }
.morpheme { color: var(--code-morpheme); font-weight: 600; }
.error { color: var(--paradox); background: var(--paradox-bg); padding: 0.125rem 0.25rem; border-radius: 2px; }

/* Inline evidence markers in code */
.ev-known { color: var(--known); font-weight: bold; }
.ev-uncertain { color: var(--uncertain); font-weight: bold; }
.ev-reported { color: var(--reported); font-weight: bold; }
.ev-paradox { color: var(--paradox); font-weight: bold; }

/* ============================================
   Comparison Section
   ============================================ */
.comparison {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.comparison-panel {
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.panel-header-bad {
  background: var(--paradox-bg);
}

.panel-header-good {
  background: var(--known-bg);
}

.panel-icon {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.panel-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
}

.badge-danger {
  background: var(--paradox);
  color: var(--text-on-accent);
}

.badge-success {
  background: var(--known);
  color: var(--text-on-accent);
}

.comparison-panel .code-block {
  border: none;
  border-radius: 0;
  margin: 0;
}

.comparison-note {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  max-width: 700px;
  margin: 0 auto;
}

.comparison-note code {
  color: var(--accent);
  font-family: var(--font-mono);
  background: var(--accent-subtle);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
}

.comparison-note em {
  color: var(--text-primary);
  font-style: normal;
}

/* ============================================
   Evidence Grid
   ============================================ */
.evidence-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.evidence-card {
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: border-color var(--transition-fast);
}

.evidence-card:hover {
  border-color: var(--accent-dark);
}

.evidence-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.evidence-header h3 {
  font-size: 1.125rem;
  margin-bottom: 0;
}

.evidence-subtitle {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0;
}

.evidence-card > p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: var(--space-md);
}

.evidence-card .code-block {
  margin: 0;
}

.evidence-rule {
  background: var(--bg-tertiary);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.evidence-rule h4 {
  font-size: 1rem;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.evidence-rule > p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.evidence-rule em {
  color: var(--accent);
  font-style: normal;
}

.evidence-rule .code-block {
  margin: 0;
}

/* ============================================
   Morpheme Section
   ============================================ */
.morpheme-demo {
  margin-bottom: var(--space-2xl);
}

.morpheme-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-md);
}

.morpheme-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  transition: border-color var(--transition-fast);
}

.morpheme-card:hover {
  border-color: var(--accent-dark);
}

.morpheme-symbol {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent);
}

.morpheme-card strong {
  display: block;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.morpheme-card p {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin: 0;
}

/* ============================================
   Agent Infrastructure Section
   ============================================ */
.agent-stack {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.agent-layer-group {
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.layer-group-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--code-border);
}

.agent-layers {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.agent-layer {
  display: flex;
  gap: var(--space-md);
}

.layer-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 2.5rem;
  text-align: center;
}

.layer-content h5 {
  font-size: 1rem;
  margin-bottom: 0.125rem;
  color: var(--text-primary);
}

.layer-subtitle {
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.layer-content > p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.layer-content .code-block {
  margin: 0;
}

.agent-cta {
  text-align: center;
}

/* ============================================
   Compilation Backends Section
   ============================================ */
.backend-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg);
}

.backend-card {
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.backend-card h4 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.backend-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.backend-card code {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent);
  background: var(--code-bg);
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
}

/* ============================================
   Installation Section
   ============================================ */
.install-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
  list-style: none;
  counter-reset: install-counter;
}

.install-step {
  display: flex;
  gap: var(--space-lg);
  counter-increment: install-counter;
}

.install-step::before {
  content: counter(install-counter);
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dark);
  color: var(--text-on-dark);
  font-weight: 700;
  font-size: 1.125rem;
  border-radius: 50%;
}

.step-content {
  flex: 1;
}

.step-content h4 {
  font-size: 1.125rem;
  margin-bottom: var(--space-md);
}

.install-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-md);
}

.install-option {
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.install-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.install-option .code-block {
  margin: 0;
}

.install-note {
  margin-top: var(--space-md);
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-style: italic;
}

.install-cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   Technical Summary Section (Collapsible)
   ============================================ */
.ai-details {
  max-width: 800px;
  margin: 0 auto;
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.ai-summary {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-card);
  cursor: pointer;
  list-style: none;
  transition: background var(--transition-fast);
}

.ai-summary::-webkit-details-marker {
  display: none;
}

.ai-summary:hover {
  background: var(--bg-elevated);
}

.summary-icon {
  font-size: 1.5rem;
}

.summary-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.summary-text strong {
  font-size: 1rem;
  color: var(--text-primary);
}

.summary-hint {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.ai-details[open] .ai-summary {
  border-bottom: 1px solid var(--code-border);
}

.ai-info {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-lg);
}

.ai-data {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-md);
}

.ai-datum {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-md);
}

.ai-datum dt {
  flex-shrink: 0;
  width: 140px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
}

.ai-datum dd {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.ai-datum a {
  color: var(--accent);
}

.ai-datum a:hover {
  text-decoration: underline;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: var(--space-3xl) 0 0;
  background: var(--bg-tertiary);
  border-top: 1px solid var(--code-border);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg) var(--space-3xl);
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-3xl);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--space-sm);
}

.footer-copyright {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.footer-column h5 {
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: var(--space-sm);
}

.footer-column a {
  color: var(--text-muted);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer-column a:hover {
  color: var(--text-primary);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .agent-stack {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 7rem 0 var(--space-2xl);
  }

  .hero-logo img {
    width: 100px;
    height: 100px;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-solution {
    padding: var(--space-sm) var(--space-md);
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

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

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

  .morpheme-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-container {
    grid-template-columns: 1fr;
  }

  .footer-nav {
    grid-template-columns: repeat(2, 1fr);
  }

  .install-step {
    flex-direction: column;
    gap: var(--space-md);
  }

  .install-step::before {
    width: 2rem;
    height: 2rem;
    font-size: 1rem;
  }

  .ai-data {
    grid-template-columns: 1fr;
  }

  .ai-datum {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .ai-datum dt {
    width: auto;
  }
}

@media (max-width: 480px) {
  .section {
    padding: var(--space-3xl) 0;
  }

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

  .footer-nav {
    grid-template-columns: 1fr;
  }

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

  .install-options {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Legacy Support (from original site)
   ============================================ */
.hero-badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--code-border);
  border-radius: 100px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent) 50%, var(--accent-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-code {
  text-align: left;
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.code-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--code-border);
}

.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.code-dot.red { background: #6B3A3A; }
.code-dot.yellow { background: #8B7355; }
.code-dot.green { background: var(--accent-dark); }

.code-title {
  margin-left: var(--space-md);
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.code-content {
  padding: var(--space-lg);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.7;
  overflow-x: auto;
}

.code-content code {
  display: block;
}

/* Feature cards (legacy) */
.features {
  padding: var(--space-3xl) 0;
  background: var(--bg-secondary);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-top: calc(var(--space-md) * -1);
  margin-bottom: var(--space-3xl);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  border-color: var(--accent-dark);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.feature-card p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.feature-code {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  overflow-x: auto;
}

/* ============================================
   Scroll-to-Top Button
   ============================================ */
.scroll-to-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition-fast), transform var(--transition-fast),
              background var(--transition-fast), border-color var(--transition-fast);
  z-index: 50;
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top:hover {
  background: var(--accent-dark);
  border-color: var(--accent);
  color: var(--text-on-dark);
}

.scroll-to-top:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ============================================
   High Contrast Mode Support
   ============================================ */
@media (prefers-contrast: more) {
  :root {
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-muted: #b0b0b0;
    --code-border: #404040;
    --accent: #00d4aa;
    --accent-light: #00ffcc;
  }

  .code-block,
  .comparison-panel,
  .evidence-card,
  .agent-layer-group,
  .morpheme-card,
  .backend-card {
    border-width: 2px;
  }

  .btn-primary {
    border: 2px solid var(--accent-light);
  }

  .btn-secondary,
  .btn-ghost {
    border-width: 2px;
  }

  a:hover {
    text-decoration: underline;
  }
}

/* ============================================
   Touch Target Improvements (44x44px minimum)
   ============================================ */
.nav-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.footer-column a {
  display: inline-block;
  min-height: 44px;
  line-height: 44px;
}

.sidebar-section a {
  min-height: 44px;
  display: flex;
  align-items: center;
}

.btn {
  min-height: 44px;
}

/* Ensure nav toggle is touch-friendly */
.nav-toggle {
  min-width: 44px;
  min-height: 44px;
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
  /* Hide non-essential elements */
  .nav,
  .nav-toggle,
  .scroll-to-top,
  .docs-sidebar-toggle,
  .hero::before,
  .btn,
  footer,
  .install-cta,
  .agent-cta {
    display: none !important;
  }

  /* Reset backgrounds for printing */
  body {
    background: white;
    color: black;
    font-size: 12pt;
    line-height: 1.5;
  }

  .hero,
  .section,
  .section-dark,
  .section-agents,
  .section-ai {
    background: white;
    padding: 1rem 0;
  }

  /* Make text readable */
  h1, h2, h3, h4, h5, h6 {
    color: black;
    page-break-after: avoid;
  }

  p, li {
    color: #333;
  }

  /* Code blocks */
  .code-block,
  .feature-code {
    background: #f5f5f5;
    border: 1px solid #ccc;
    color: black;
    page-break-inside: avoid;
  }

  .keyword, .function, .type, .string, .number, .comment, .operator {
    color: inherit;
  }

  /* Links */
  a {
    color: black;
    text-decoration: underline;
  }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #666;
  }

  /* Cards */
  .evidence-card,
  .morpheme-card,
  .backend-card,
  .comparison-panel {
    background: #f9f9f9;
    border: 1px solid #ddd;
    page-break-inside: avoid;
  }

  /* Page margins */
  @page {
    margin: 2cm;
  }

  /* Docs layout */
  .docs-layout {
    display: block;
  }

  .docs-sidebar {
    display: none;
  }

  .docs-content {
    max-width: 100%;
    margin: 0;
    padding: 0;
  }
}

/* ============================================
   11/10 Features - Copy Button
   ============================================ */
.copy-btn {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast), background var(--transition-fast),
              color var(--transition-fast), border-color var(--transition-fast);
  z-index: 10;
}

.code-block:hover .copy-btn,
.feature-code:hover .copy-btn,
pre:hover .copy-btn,
.copy-btn:focus-visible {
  opacity: 1;
}

.copy-btn:hover {
  background: var(--accent-dark);
  border-color: var(--accent);
  color: var(--text-on-dark);
}

.copy-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.copy-btn.copied {
  background: var(--known);
  border-color: var(--known);
  color: var(--text-on-accent);
}

.copy-btn.copy-error {
  background: var(--paradox);
  border-color: var(--paradox);
  color: var(--text-on-accent);
  opacity: 1;
}

/* ============================================
   11/10 Features - External Link Icons
   ============================================ */
.external-link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.2em;
}

.external-icon {
  font-size: 0.75em;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.external-link:hover .external-icon {
  opacity: 1;
}

/* ============================================
   11/10 Features - Reading Time
   ============================================ */
.reading-time {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.reading-time-icon {
  font-size: 1rem;
}

/* ============================================
   11/10 Features - Command Palette
   ============================================ */
.command-palette {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
}

.command-palette.open {
  display: flex;
}

.palette-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.palette-container {
  position: relative;
  width: 100%;
  max-width: 560px;
  margin: 0 var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

.palette-search {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--code-border);
}

.palette-search svg {
  flex-shrink: 0;
  color: var(--text-muted);
}

.palette-input {
  flex: 1;
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text-primary);
  outline: none;
}

.palette-input::placeholder {
  color: var(--text-muted);
}

.palette-kbd {
  padding: 0.125rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.palette-results {
  list-style: none;
  max-height: 320px;
  overflow-y: auto;
  padding: var(--space-sm) 0;
}

.palette-item {
  display: flex;
  align-items: center;
  padding: var(--space-sm) var(--space-lg);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.palette-item:hover,
.palette-item.selected {
  background: var(--accent-subtle);
}

.palette-item.selected {
  background: var(--accent-dark);
}

.palette-item.selected .palette-item-title {
  color: var(--text-on-dark);
}

.palette-item-title {
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.palette-footer {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-sm) var(--space-lg);
  border-top: 1px solid var(--code-border);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.palette-footer kbd {
  padding: 0.125rem 0.375rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--code-border);
  border-radius: 3px;
  margin-right: 0.25rem;
}

/* Command palette in print - hide */
@media print {
  .command-palette {
    display: none !important;
  }
}

/* ============================================
   11/10 Features - Scroll Spy TOC
   ============================================ */
.scroll-spy-toc {
  position: fixed;
  top: 120px;
  right: var(--space-xl);
  width: 200px;
  max-height: calc(100vh - 160px);
  overflow-y: auto;
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  z-index: 40;
  display: none;
}

/* Only show on large screens with enough space */
@media (min-width: 1400px) {
  .scroll-spy-toc {
    display: block;
  }
}

.toc-header {
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--code-border);
}

.toc-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.toc-list {
  list-style: none;
}

.toc-item {
  margin-bottom: var(--space-xs);
}

.toc-h3 {
  padding-left: var(--space-md);
}

.toc-link {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-muted);
  padding: var(--space-xs) 0;
  border-left: 2px solid transparent;
  padding-left: var(--space-sm);
  transition: color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.toc-link.active {
  color: var(--accent);
  border-left-color: var(--accent);
}

/* ============================================
   11/10 Features - Breadcrumbs
   ============================================ */
.breadcrumbs {
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--code-border);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  list-style: none;
  max-width: 1200px;
  margin: 0 auto;
  font-size: 0.8125rem;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
}

.breadcrumb-link {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.breadcrumb-link:hover {
  color: var(--accent);
}

.breadcrumb-separator {
  color: var(--text-muted);
  margin: 0 var(--space-xs);
}

.breadcrumb-current {
  color: var(--text-primary);
  font-weight: 500;
}

/* Hide breadcrumbs in print */
@media print {
  .breadcrumbs,
  .scroll-spy-toc {
    display: none !important;
  }
}

/* ============================================
   12/10 Features - Code Density Comparison
   ============================================ */
.density-comparison {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.density-panel {
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.density-panel-sigil {
  border-color: var(--accent-dark);
}

.density-panel-rust {
  border-color: var(--code-border);
}

.density-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--code-border);
}

.density-lang {
  font-weight: 600;
  font-size: 0.9375rem;
}

.density-panel-sigil .density-lang {
  color: var(--accent);
}

.density-stats {
  display: flex;
  gap: var(--space-lg);
}

.density-stats .stat {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.density-stats strong {
  color: var(--text-primary);
}

.density-panel pre.code-block {
  margin: 0;
  border: none;
  border-radius: 0;
  max-height: 400px;
  overflow-y: auto;
}

.code-density {
  font-size: 0.75rem;
  line-height: 1.6;
}

.density-summary {
  display: flex;
  justify-content: center;
  gap: var(--space-3xl);
  margin-bottom: var(--space-xl);
}

.density-metric {
  text-align: center;
}

.metric-value {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.metric-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: var(--space-xs);
  display: block;
}

.density-note {
  text-align: center;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto var(--space-xl);
}

.density-note code {
  background: var(--bg-tertiary);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.875em;
  color: var(--accent);
}

.density-details {
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.density-details summary {
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.density-details summary:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.density-details[open] summary {
  border-bottom: 1px solid var(--code-border);
}

.density-table-wrapper {
  overflow-x: auto;
  padding: var(--space-lg);
}

.density-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.density-table th,
.density-table td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--code-border);
}

.density-table th {
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.density-table td {
  color: var(--text-secondary);
}

.density-table td:first-child {
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.density-table .positive {
  color: var(--known);
  font-weight: 500;
}

.density-table .total {
  background: var(--bg-tertiary);
}

.density-table .total td {
  border-bottom: none;
}

.table-note {
  padding: 0 var(--space-lg) var(--space-lg);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ============================================
   12/10 Features - Ecosystem / Built on Sigil
   ============================================ */
.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.ecosystem-card {
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.ecosystem-card:hover {
  border-color: var(--accent-dark);
  transform: translateY(-2px);
}

.ecosystem-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-md);
}

.ecosystem-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

.ecosystem-badge {
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.5rem;
  background: var(--accent-subtle);
  color: var(--accent);
  border-radius: var(--radius-sm);
}

.ecosystem-desc {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  font-size: 0.9375rem;
}

.ecosystem-features {
  list-style: none;
  margin-bottom: var(--space-lg);
}

.ecosystem-features li {
  position: relative;
  padding-left: var(--space-md);
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--space-xs);
}

.ecosystem-features li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.ecosystem-card pre.code-block {
  margin: 0;
}

.ecosystem-note {
  text-align: center;
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
}

.ecosystem-note strong {
  color: var(--text-primary);
}

/* Responsive: Code Density */
@media (max-width: 1024px) {
  .density-comparison {
    grid-template-columns: 1fr;
  }

  .density-summary {
    gap: var(--space-xl);
  }

  .metric-value {
    font-size: 2rem;
  }

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

@media (max-width: 768px) {
  .density-summary {
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
  }

  .density-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
}

/* Print: hide ecosystem section details */
@media print {
  .density-details,
  .ecosystem-card pre {
    display: none;
  }

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

/* =====================================================
   The Pattern: Philosophy Section
   ===================================================== */

.pattern-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
}

.pattern-card {
  background: var(--bg-card);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.pattern-card:hover {
  border-color: var(--accent-dark);
  transform: translateY(-2px);
}

.pattern-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.pattern-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}

.pattern-card p:last-child {
  margin-bottom: 0;
}

.pattern-list {
  list-style: none;
  margin: var(--space-sm) 0;
  padding: 0;
}

.pattern-list li {
  position: relative;
  padding-left: var(--space-md);
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--space-xs);
}

.pattern-list li::before {
  content: "◆";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.5rem;
  top: 0.35em;
}

.pattern-card pre.code-block {
  margin: var(--space-md) 0;
  font-size: 0.8125rem;
}

.pattern-cta {
  text-align: center;
}

.pattern-quote {
  font-size: 1.25rem;
  font-style: italic;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-xl);
  border-left: 4px solid var(--accent);
  background: var(--bg-card);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  text-align: left;
}

/* Responsive: Pattern Grid */
@media (max-width: 1024px) {
  .pattern-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .pattern-grid {
    grid-template-columns: 1fr;
  }

  .pattern-quote {
    font-size: 1.0625rem;
    padding: var(--space-lg);
  }
}

/* =====================================================
   Pattern Teaser (Homepage compact version)
   ===================================================== */

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

.pattern-teaser-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin: var(--space-2xl) 0;
}

.pattern-teaser-item {
  text-align: center;
  padding: var(--space-lg);
}

.pattern-teaser-item h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.pattern-teaser-item p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.pattern-cta-center {
  text-align: center;
  margin-top: var(--space-xl);
}

@media (max-width: 768px) {
  .pattern-teaser-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .pattern-teaser-item {
    padding: var(--space-md);
  }
}

/* ============================================
   PRIVACY CONSENT BANNER
   ============================================ */

.privacy-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: var(--space-lg);
  transform: translateY(100%);
  transition: transform 0.3s ease;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
}

.privacy-banner.visible {
  transform: translateY(0);
}

.privacy-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

.privacy-text {
  flex: 1;
}

.privacy-heading {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--space-xs) 0;
}

.privacy-body {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

.privacy-link {
  color: var(--accent);
  text-decoration: underline;
}

.privacy-link:hover {
  color: var(--accent-hover);
}

.privacy-actions {
  display: flex;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.privacy-btn {
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
}

.privacy-accept {
  background: var(--accent);
  color: var(--bg-primary);
}

.privacy-accept:hover {
  background: var(--accent-hover);
}

.privacy-decline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.privacy-decline:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .privacy-content {
    flex-direction: column;
    text-align: center;
    gap: var(--space-md);
  }

  .privacy-actions {
    width: 100%;
    flex-direction: column;
  }

  .privacy-btn {
    width: 100%;
    padding: var(--space-md);
  }
}