/* ==========================================================================
   ox-orchestrator — Earthy, Organic Developer Design System
   Color Palette strictly limited to:
     #12130F (Ink / Bedrock)
     #5B9279 (Muted Sage Green)
     #8FCB9B (Soft Leaf Green)
     #EAE6E5 (Warm Off-White)
     #8F8073 (Warm Taupe / Bark)
   ========================================================================== */

:root {
  /* Strict 5-Tone Palette */
  --c-ink: #12130F;
  --c-sage: #5B9279;
  --c-leaf: #8FCB9B;
  --c-canvas: #EAE6E5;
  --c-taupe: #8F8073;

  /* Semantic Interface Mapping */
  --bg-page: var(--c-ink);
  --bg-surface: rgba(18, 19, 15, 0.85);
  --bg-surface-elevated: rgba(234, 230, 229, 0.04);
  --bg-surface-active: rgba(91, 146, 121, 0.14);
  --bg-terminal: #12130F;
  --bg-code: rgba(18, 19, 15, 0.95);

  --border-subtle: rgba(143, 128, 115, 0.25);
  --border-medium: rgba(143, 128, 115, 0.5);
  --border-strong: var(--c-taupe);
  --border-accent: var(--c-sage);
  --border-highlight: var(--c-leaf);

  --text-primary: var(--c-canvas);
  --text-secondary: var(--c-taupe);
  --text-accent: var(--c-leaf);
  --text-muted: rgba(143, 128, 115, 0.85);

  /* Typography */
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Geometry & Rhythm */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
  background-color: var(--bg-page);
  color: var(--text-primary);
  font-size: 16px;
}

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

/* Visible Keyboard Focus States */
:focus-visible {
  outline: 2px solid var(--c-leaf);
  outline-offset: 2px;
}

/* Earthy Structural Substrate Pattern */
.site-substrate {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(143, 128, 115, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(143, 128, 115, 0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at 50% 15%, black 40%, transparent 85%);
  -webkit-mask-image: radial-gradient(circle at 50% 15%, black 40%, transparent 85%);
  pointer-events: none;
  z-index: 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

p {
  color: var(--text-canvas);
  font-size: 1rem;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

code, kbd, pre {
  font-family: var(--font-mono);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(18, 19, 15, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color var(--transition-fast);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--c-canvas);
}

.logo-box {
  width: 32px;
  height: 32px;
  background: var(--c-ink);
  border: 1.5px solid var(--c-leaf);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 10px rgba(143, 203, 155, 0.15);
}

.logo-text {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-leaf);
}

.brand-name {
  letter-spacing: -0.03em;
}

.brand-badge {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 2px 7px;
  background: rgba(91, 146, 121, 0.2);
  border: 1px solid var(--c-sage);
  border-radius: var(--radius-full);
  color: var(--c-leaf);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--c-taupe);
  padding: 6px 0;
  position: relative;
}

.nav-links a:hover {
  color: var(--c-canvas);
}

.nav-links a.nav-highlight {
  color: var(--c-leaf);
}

.nav-links a.nav-highlight:hover {
  color: var(--c-canvas);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-trigger-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 7px 12px;
  color: var(--c-taupe);
  font-size: 0.85rem;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.search-trigger-btn:hover {
  border-color: var(--c-sage);
  color: var(--c-canvas);
  background: rgba(91, 146, 121, 0.1);
}

.search-trigger-btn kbd {
  font-size: 0.72rem;
  background: var(--c-ink);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 1px 5px;
  color: var(--c-taupe);
}

.github-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--c-ink);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 7px 14px;
  color: var(--c-canvas);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.github-btn:hover {
  border-color: var(--c-leaf);
  color: var(--c-leaf);
  background: rgba(143, 203, 155, 0.08);
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 6px;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
}

.mobile-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--c-canvas);
}

/* Mobile Drawer */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 61px;
  left: 0;
  right: 0;
  background: var(--c-ink);
  border-bottom: 1px solid var(--border-strong);
  padding: 16px 24px;
  flex-direction: column;
  gap: 12px;
  z-index: 99;
}

.mobile-drawer.active {
  display: flex;
}

.mobile-drawer a {
  font-size: 1rem;
  color: var(--c-canvas);
  padding: 8px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.mobile-drawer a:last-child {
  border-bottom: none;
  color: var(--c-leaf);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  padding: 60px 0 50px;
  position: relative;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(91, 146, 121, 0.15);
  border: 1px solid var(--c-sage);
  border-radius: var(--radius-full);
  padding: 4px 14px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--c-leaf);
  margin-bottom: 20px;
}

.pill-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background-color: var(--c-leaf);
  box-shadow: 0 0 8px var(--c-leaf);
}

.hero-title {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.035em;
  margin-bottom: 20px;
  color: var(--c-canvas);
}

.hero-highlight {
  color: var(--c-leaf);
  text-decoration: underline;
  text-decoration-color: rgba(91, 146, 121, 0.5);
  text-underline-offset: 6px;
  text-decoration-thickness: 3px;
}

.hero-subtitle {
  font-size: 1.08rem;
  line-height: 1.65;
  color: var(--c-taupe);
  margin-bottom: 28px;
}

.hero-subtitle strong {
  color: var(--c-canvas);
}

.hero-subtitle code {
  font-size: 0.92rem;
  background: rgba(234, 230, 229, 0.08);
  border: 1px solid var(--border-medium);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--c-leaf);
}

/* Quick Installer Box */
.hero-installer-box {
  background: var(--c-ink);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 28px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.install-tabs {
  display: flex;
  background: rgba(234, 230, 229, 0.03);
  border-bottom: 1px solid var(--border-subtle);
}

.inst-tab {
  flex: 1;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 9px 14px;
  color: var(--c-taupe);
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.inst-tab:hover {
  color: var(--c-canvas);
  background: rgba(234, 230, 229, 0.04);
}

.inst-tab.active {
  color: var(--c-leaf);
  border-bottom-color: var(--c-leaf);
  background: rgba(91, 146, 121, 0.1);
}

.install-command-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  gap: 12px;
}

.command-content {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow-x: auto;
}

.prompt-sym {
  color: var(--c-sage);
  font-weight: 700;
  font-family: var(--font-mono);
  user-select: none;
}

.command-content code {
  font-size: 0.88rem;
  color: var(--c-canvas);
  white-space: nowrap;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(91, 146, 121, 0.18);
  border: 1px solid var(--c-sage);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  color: var(--c-canvas);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.copy-btn:hover {
  background: var(--c-sage);
  border-color: var(--c-leaf);
  color: var(--c-ink);
}

/* Call to Action Buttons */
.hero-ctas {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.94rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-smooth);
}

.btn-primary {
  background: var(--c-leaf);
  border: 1px solid var(--c-leaf);
  color: var(--c-ink);
  box-shadow: 0 4px 14px rgba(143, 203, 155, 0.25);
}

.btn-primary:hover {
  background: var(--c-canvas);
  border-color: var(--c-canvas);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(143, 203, 155, 0.35);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--c-canvas);
}

.btn-secondary:hover {
  border-color: var(--c-sage);
  background: rgba(91, 146, 121, 0.12);
  color: var(--c-leaf);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 7px 14px;
  font-size: 0.82rem;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-medium);
  color: var(--c-canvas);
}

.btn-outline:hover {
  border-color: var(--c-leaf);
  background: rgba(143, 203, 155, 0.1);
  color: var(--c-leaf);
}

/* Hero Stat Grid */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-canvas);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.76rem;
  color: var(--c-taupe);
  line-height: 1.3;
}

/* ==========================================================================
   Signature Element: Living DAG Branch Inspector & Terminal Card
   ========================================================================== */

.hero-terminal-wrap {
  position: relative;
}

.terminal-card {
  background: var(--c-ink);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
}

.terminal-header {
  background: rgba(234, 230, 229, 0.03);
  border-bottom: 1px solid var(--border-subtle);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-dots {
  display: flex;
  align-items: center;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
}

.dot-ink {
  background-color: var(--c-taupe);
}

.dot-taupe {
  background-color: var(--c-sage);
}

.dot-leaf {
  background-color: var(--c-leaf);
}

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-taupe);
}

.terminal-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 7px;
  background: rgba(143, 203, 155, 0.15);
  border: 1px solid var(--c-leaf);
  border-radius: var(--radius-sm);
  color: var(--c-leaf);
  letter-spacing: 0.05em;
}

/* Living DAG Session Inspector Toolbar */
.dag-branch-inspector {
  background: rgba(18, 19, 15, 0.98);
  border-bottom: 1px solid var(--border-medium);
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  overflow-x: auto;
}

.dag-inspector-label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--c-taupe);
  white-space: nowrap;
  flex-shrink: 0;
}

.dag-tree-icon {
  font-size: 0.85rem;
}

.dag-nodes-track {
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.dag-node-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-full);
  padding: 2px 9px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--c-taupe);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.dag-node-pill:hover {
  border-color: var(--c-sage);
  color: var(--c-canvas);
  background: rgba(91, 146, 121, 0.15);
}

.dag-node-pill.active {
  border-color: var(--c-leaf);
  background: rgba(143, 203, 155, 0.18);
  color: var(--c-leaf);
  font-weight: 600;
}

.dag-node-pill.dag-node-alt {
  border-style: dashed;
  border-color: var(--c-taupe);
  color: var(--c-taupe);
}

.dag-node-pill.dag-node-alt:hover {
  border-color: var(--c-sage);
  color: var(--c-canvas);
}

.dag-dot {
  width: 5px;
  height: 5px;
  border-radius: var(--radius-full);
  background-color: currentColor;
}

.dag-connector {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-taupe);
  user-select: none;
}

.dag-connector-fork {
  color: var(--c-sage);
}

/* Terminal Body */
.terminal-body {
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  min-height: 280px;
  max-height: 340px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  line-height: 1.45;
  background: var(--c-ink);
}

.term-line {
  word-break: break-word;
}

.term-prompt {
  color: var(--c-leaf);
  font-weight: 600;
}

.term-user-text {
  color: var(--c-canvas);
}

.term-ai-text {
  color: var(--c-canvas);
}

.term-tool {
  color: var(--c-sage);
  display: inline-block;
  padding: 2px 6px;
  background: rgba(91, 146, 121, 0.15);
  border-left: 2px solid var(--c-sage);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
}

.term-security-box {
  background: rgba(91, 146, 121, 0.12);
  border: 1px solid var(--c-sage);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin: 4px 0;
  font-size: 0.78rem;
  color: var(--c-canvas);
}

.term-banner {
  color: var(--c-leaf);
  font-size: 0.76rem;
  line-height: 1.25;
  margin: 4px 0;
  white-space: pre;
}

.term-success {
  color: var(--c-leaf);
  font-weight: 600;
}

.terminal-footer {
  background: rgba(234, 230, 229, 0.02);
  border-top: 1px solid var(--border-subtle);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
}

.term-action-btn {
  background: transparent;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  color: var(--c-taupe);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.term-action-btn:hover {
  border-color: var(--c-leaf);
  color: var(--c-leaf);
  background: rgba(143, 203, 155, 0.1);
}

.term-status {
  color: var(--c-taupe);
}

.term-status strong {
  color: var(--c-canvas);
}

/* ==========================================================================
   Section Header Standard
   ========================================================================== */

.section {
  padding: 80px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--c-leaf);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: rgba(91, 146, 121, 0.15);
  border: 1px solid var(--c-sage);
  border-radius: var(--radius-full);
  padding: 3px 12px;
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
  color: var(--c-canvas);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--c-taupe);
  line-height: 1.6;
}

/* ==========================================================================
   Architecture Features Grid (3x2 Taupe Bounded)
   ========================================================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--c-ink);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all var(--transition-smooth);
}

.feature-card:hover {
  border-color: var(--c-sage);
  background: rgba(234, 230, 229, 0.02);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.feat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(91, 146, 121, 0.15);
  border: 1px solid var(--c-sage);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-leaf);
  margin-bottom: 4px;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--c-canvas);
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--c-taupe);
  line-height: 1.55;
}

.feature-card code {
  font-size: 0.85rem;
  color: var(--c-leaf);
  background: rgba(234, 230, 229, 0.06);
  padding: 1px 4px;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Diátaxis Quadrants & Integrated Document Reader
   ========================================================================== */

.diataxis-quadrant-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.quadrant-card {
  background: var(--c-ink);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 24px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all var(--transition-smooth);
}

.quadrant-card:hover {
  border-color: var(--c-leaf);
  background: rgba(91, 146, 121, 0.08);
  transform: translateY(-2px);
}

.q-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.q-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: rgba(91, 146, 121, 0.2);
  border: 1px solid var(--c-sage);
  color: var(--c-leaf);
}

.q-axis {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-taupe);
}

.q-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-canvas);
}

.q-desc {
  font-size: 0.92rem;
  color: var(--c-taupe);
  line-height: 1.5;
}

.q-links {
  list-style: none;
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.q-links li a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--c-leaf);
}

.q-links li a:hover {
  text-decoration: underline;
  color: var(--c-canvas);
}

/* Integrated Diátaxis Document Viewer */
.doc-viewer-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  background: var(--c-ink);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
  min-height: 600px;
}

.doc-sidebar {
  background: rgba(234, 230, 229, 0.02);
  border-right: 1px solid var(--border-medium);
  display: flex;
  flex-direction: column;
}

.doc-sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--c-canvas);
}

.doc-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: rgba(91, 146, 121, 0.2);
  border: 1px solid var(--c-sage);
  border-radius: var(--radius-full);
  padding: 1px 7px;
  color: var(--c-leaf);
}

.doc-search-box {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.doc-search-box input {
  width: 100%;
  background: var(--c-ink);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--c-canvas);
  outline: none;
  transition: border-color var(--transition-fast);
}

.doc-search-box input:focus {
  border-color: var(--c-leaf);
}

.doc-search-box input::placeholder {
  color: var(--c-taupe);
}

.doc-nav-list {
  padding: 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.doc-nav-category {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--c-sage);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 10px 8px 4px;
}

.doc-nav-item {
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--c-taupe);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.doc-nav-item:hover {
  color: var(--c-canvas);
  background: rgba(234, 230, 229, 0.04);
}

.doc-nav-item.active {
  color: var(--c-leaf);
  background: rgba(91, 146, 121, 0.18);
  border-color: var(--c-sage);
  font-weight: 600;
}

/* Document Content Pane */
.doc-content-pane {
  display: flex;
  flex-direction: column;
  background: var(--c-ink);
}

.doc-toolbar {
  padding: 14px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(234, 230, 229, 0.015);
}

.doc-breadcrumbs {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-taupe);
}

.doc-toolbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.doc-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 5px 10px;
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--c-taupe);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.doc-action-btn:hover {
  border-color: var(--c-leaf);
  color: var(--c-canvas);
  background: rgba(143, 203, 155, 0.1);
}

.doc-body {
  padding: 32px;
  overflow-y: auto;
  color: var(--c-canvas);
  line-height: 1.7;
}

/* Markdown Typography within Document Body */
.doc-body h1 {
  font-size: 1.85rem;
  margin-bottom: 16px;
  color: var(--c-canvas);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 12px;
}

.doc-body h2 {
  font-size: 1.4rem;
  margin-top: 28px;
  margin-bottom: 12px;
  color: var(--c-canvas);
}

.doc-body h3 {
  font-size: 1.15rem;
  margin-top: 20px;
  margin-bottom: 8px;
  color: var(--c-canvas);
}

.doc-body p {
  margin-bottom: 14px;
  color: var(--c-canvas);
  font-size: 0.96rem;
}

.doc-body hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: 24px 0;
}

.doc-body pre {
  background: rgba(18, 19, 15, 0.95);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 16px;
  margin: 16px 0;
  overflow-x: auto;
}

.doc-body pre code {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--c-canvas);
  background: transparent;
  padding: 0;
  border: none;
}

.doc-body code {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  background: rgba(234, 230, 229, 0.08);
  border: 1px solid var(--border-subtle);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--c-leaf);
}

.doc-body ul, .doc-body ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.doc-body li {
  margin-bottom: 6px;
  font-size: 0.95rem;
  color: var(--c-canvas);
}

.doc-body blockquote {
  border-left: 3px solid var(--c-sage);
  padding: 10px 16px;
  background: rgba(91, 146, 121, 0.08);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 16px 0;
  color: var(--c-canvas);
}

.doc-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 0.88rem;
}

.doc-body th, .doc-body td {
  border: 1px solid var(--border-medium);
  padding: 8px 12px;
  text-align: left;
}

.doc-body th {
  background: rgba(234, 230, 229, 0.04);
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--c-canvas);
}

/* ==========================================================================
   Provider & Model Ecosystem Matrix
   ========================================================================== */

.provider-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
}

.provider-card {
  background: var(--c-ink);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all var(--transition-smooth);
}

.provider-card:hover {
  border-color: var(--c-sage);
  background: rgba(91, 146, 121, 0.06);
  transform: translateY(-2px);
}

.p-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.p-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--c-canvas);
}

.p-status {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  background: rgba(91, 146, 121, 0.18);
  border: 1px solid var(--c-sage);
  color: var(--c-leaf);
}

.provider-card h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-canvas);
}

.p-models {
  font-size: 0.82rem;
  color: var(--c-taupe);
  line-height: 1.4;
}

.p-code-snippet {
  margin-top: auto;
  background: rgba(18, 19, 15, 0.9);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--c-leaf);
  overflow-x: auto;
  line-height: 1.35;
}

/* ==========================================================================
   Download & Release Matrix
   ========================================================================== */

.section-actions {
  margin-top: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.release-version-pill {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(143, 203, 155, 0.15);
  border: 1px solid var(--c-leaf);
  border-radius: var(--radius-full);
  padding: 4px 12px;
  color: var(--c-leaf);
}

.release-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.release-card {
  background: var(--c-ink);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all var(--transition-smooth);
}

.release-card:hover {
  border-color: var(--c-leaf);
  background: rgba(234, 230, 229, 0.02);
  transform: translateY(-2px);
}

.rc-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.rc-icon-badge {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: rgba(91, 146, 121, 0.15);
  border: 1px solid var(--c-sage);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-leaf);
  flex-shrink: 0;
}

.rc-header h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-canvas);
}

.rc-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--c-taupe);
}

.rc-body p {
  font-size: 0.88rem;
  color: var(--c-taupe);
  margin-bottom: 12px;
}

.rc-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rc-download-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.rc-download-item .btn {
  flex: 1;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.asset-size {
  color: var(--c-taupe);
  font-size: 0.72rem;
}

.rc-checksum {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--c-taupe);
  padding: 6px 8px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.rc-checksum:hover {
  border-color: var(--c-leaf);
  color: var(--c-leaf);
}

.rc-command-box {
  background: rgba(18, 19, 15, 0.95);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-leaf);
  word-break: break-all;
}

/* ==========================================================================
   Search Modal Overlay (Ctrl+K)
   ========================================================================== */

.search-modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(18, 19, 15, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 200;
  align-items: flex-start;
  justify-content: center;
  padding-top: 100px;
}

.search-modal-backdrop.active {
  display: flex;
}

.search-modal-box {
  width: 100%;
  max-width: 620px;
  background: var(--c-ink);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.8);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.search-modal-input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-medium);
  color: var(--c-taupe);
}

.search-modal-input-wrap input {
  flex: 1;
  background: transparent;
  border: none;
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--c-canvas);
  outline: none;
}

.search-modal-input-wrap input::placeholder {
  color: var(--c-taupe);
}

.search-close-btn {
  background: var(--c-ink);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-taupe);
  cursor: pointer;
}

.search-results-list {
  max-height: 380px;
  overflow-y: auto;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.search-result-item {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.search-result-item:hover {
  background: rgba(91, 146, 121, 0.15);
  border-color: var(--c-sage);
}

.sr-category {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--c-leaf);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.sr-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--c-canvas);
  margin-bottom: 2px;
}

.sr-snippet {
  font-size: 0.8rem;
  color: var(--c-taupe);
  line-height: 1.35;
}

/* ==========================================================================
   Toast Notification
   ========================================================================== */

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--c-ink);
  border: 1px solid var(--c-leaf);
  border-radius: var(--radius-md);
  padding: 10px 18px;
  color: var(--c-canvas);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  z-index: 300;
  opacity: 0;
  transform: translateY(12px);
  transition: all var(--transition-smooth);
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  border-top: 1px solid var(--border-strong);
  background: rgba(18, 19, 15, 0.98);
  padding: 60px 0 40px;
  margin-top: 60px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-desc {
  font-size: 0.92rem;
  color: var(--c-taupe);
  max-width: 400px;
  line-height: 1.55;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-taupe);
  margin-top: 10px;
}

.footer-links-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col h5 {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--c-canvas);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.footer-col a {
  font-size: 0.85rem;
  color: var(--c-taupe);
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--c-leaf);
}

/* ==========================================================================
   Accessibility & Responsive Media Queries
   ========================================================================== */

/* Respect Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Tablet & Smaller Desktops */
@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .doc-viewer-container {
    grid-template-columns: 1fr;
  }
  .doc-sidebar {
    max-height: 260px;
    border-right: none;
    border-bottom: 1px solid var(--border-medium);
  }
}

/* Mobile Devices (down to 375px) */
@media (max-width: 768px) {
  .nav-links, .search-trigger-btn {
    display: none;
  }
  .mobile-toggle {
    display: flex;
  }
  .hero-section {
    padding: 36px 0;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .diataxis-quadrant-grid {
    grid-template-columns: 1fr;
  }
  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-links-group {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .search-modal-backdrop {
    padding-top: 20px;
    padding-left: 12px;
    padding-right: 12px;
  }
}