/* ============================================================
   PAKT Design System — usepakt.dev
   Palette: Copper Wire (graphite + copper-orange + teal)
   ============================================================ */

/* ===== Design Tokens ===== */
:root {
  /* Backgrounds */
  --bg-base: #fafbfd;
  --bg-surface: #ffffff;
  --bg-elevated: #f0f1f5;
  --bg-inset: #e8eaf0;
  --bg-code: #1c1f2a;

  /* Borders */
  --border: #d8dae2;
  --border-subtle: #ecedf3;

  /* Text */
  --text: #1a1c28;
  --text-secondary: #4a4e64;
  --text-muted: #7c82a0;

  /* Accent (copper-orange) */
  --accent: #d05a28;
  --accent-hover: #e06a38;
  --accent-bg: rgba(208, 90, 40, 0.06);

  /* Secondary (teal) */
  --teal: #0c8c85;
  --teal-hover: #0ea69e;
  --teal-bg: rgba(12, 140, 133, 0.06);

  /* Syntax highlighting */
  --syn-type: #c24d1e;
  --syn-op: #0c8c85;
  --syn-str: #2e7d3e;
  --syn-num: #9a6020;
  --syn-bool: #7b38a0;
  --syn-name: #1a1c28;
  --syn-delim: #7c82a0;
  --syn-comment: #9098b0;

  /* Misc */
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --transition: 0.2s ease;
  --max-width: 1080px;
  --max-width-narrow: 740px;

  color-scheme: light dark;
}

/* Dark theme */
[data-theme="dark"] {
  --bg-base: #0c0e14;
  --bg-surface: #14171f;
  --bg-elevated: #1c2030;
  --bg-inset: #08090e;
  --bg-code: #0a0c12;

  --border: #282c40;
  --border-subtle: #1e2234;

  --text: #e4e6ee;
  --text-secondary: #9298b4;
  --text-muted: #5c6280;

  --accent: #e87040;
  --accent-hover: #f08858;
  --accent-bg: rgba(232, 112, 64, 0.10);

  --teal: #4ecdc4;
  --teal-hover: #6ee0d8;
  --teal-bg: rgba(78, 205, 196, 0.08);

  --syn-type: #e87040;
  --syn-op: #4ecdc4;
  --syn-str: #98c379;
  --syn-num: #d19a66;
  --syn-bool: #c678dd;
  --syn-name: #e4e6ee;
  --syn-delim: #6c7290;
  --syn-comment: #505872;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
}

/* System preference fallback (when no data-theme is set) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-base: #0c0e14;
    --bg-surface: #14171f;
    --bg-elevated: #1c2030;
    --bg-inset: #08090e;
    --bg-code: #0a0c12;
    --border: #282c40;
    --border-subtle: #1e2234;
    --text: #e4e6ee;
    --text-secondary: #9298b4;
    --text-muted: #5c6280;
    --accent: #e87040;
    --accent-hover: #f08858;
    --accent-bg: rgba(232, 112, 64, 0.10);
    --teal: #4ecdc4;
    --teal-hover: #6ee0d8;
    --teal-bg: rgba(78, 205, 196, 0.08);
    --syn-type: #e87040;
    --syn-op: #4ecdc4;
    --syn-str: #98c379;
    --syn-num: #d19a66;
    --syn-bool: #c678dd;
    --syn-name: #e4e6ee;
    --syn-delim: #6c7290;
    --syn-comment: #505872;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  }
}

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

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

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg-base);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main { flex: 1; }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--accent-hover); text-decoration: underline; }

code, pre, .mono {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

code { font-size: 0.875em; }

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

/* ===== Navigation ===== */
.site-nav {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background var(--transition), border-color var(--transition);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.75rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.06em;
}
.nav-brand:hover { text-decoration: none; color: var(--accent); }

.nav-brand svg { width: 28px; height: 28px; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 0.25rem;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover {
  color: var(--text);
  background: var(--bg-elevated);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0.4rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.nav-toggle:hover { background: var(--bg-elevated); }

/* Theme toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-bg);
}
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* Mobile nav overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  top: 3.75rem;
  background: var(--bg-surface);
  z-index: 99;
  padding: 1.5rem;
  flex-direction: column;
  gap: 0.5rem;
  border-top: 1px solid var(--border);
}

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

.nav-overlay a {
  display: block;
  padding: 0.75rem 1rem;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text);
  border-radius: var(--radius-sm);
  text-decoration: none;
}
.nav-overlay a:hover {
  background: var(--bg-elevated);
  text-decoration: none;
}

/* ===== Hero ===== */
.hero {
  background: var(--bg-code);
  color: #e4e6ee;
  padding: 5rem 1.5rem 4.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Subtle gradient orbs */
.hero::before {
  content: "";
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(232, 112, 64, 0.08) 0%, transparent 70%);
  top: -200px;
  left: -100px;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(78, 205, 196, 0.06) 0%, transparent 70%);
  bottom: -150px;
  right: -100px;
  pointer-events: none;
}

.hero-inner {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal, #4ecdc4);
  background: rgba(78, 205, 196, 0.1);
  padding: 0.3rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  color: #f0f1f5;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.hero-title em {
  font-style: normal;
  color: var(--accent, #e87040);
}

.pakt-word {
  letter-spacing: 0.04em;
}

.pakt-copper {
  color: var(--accent, #e87040);
}

.pakt-teal {
  color: var(--teal, #4ecdc4);
}

.hero-tagline {
  font-size: 1.2rem;
  color: #9298b4;
  margin-bottom: 2.5rem;
  line-height: 1.6;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.hero-code {
  text-align: left;
  margin: 0 auto 2.5rem;
  max-width: 540px;
}

.hero-code pre {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.7;
  position: relative;
}

.hero-code code {
  color: #d4d6e4;
}

/* Typing cursor */
.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--accent, #e87040);
  vertical-align: text-bottom;
  animation: cursor-blink 0.8s step-end infinite;
  margin-left: 1px;
}
@keyframes cursor-blink {
  50% { opacity: 0; }
}

/* PAKT syntax classes */
.pk-type { color: var(--syn-type); }
.pk-op { color: var(--syn-op); }
.pk-str { color: var(--syn-str); }
.pk-num { color: var(--syn-num); }
.pk-bool { color: var(--syn-bool); }
.pk-name { color: var(--syn-name); }
.pk-delim { color: var(--syn-delim); }
.pk-comment { color: var(--syn-comment); font-style: italic; }

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}
.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(232, 112, 64, 0.3);
}

.btn-secondary {
  background: transparent;
  color: #c0c4d8;
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* On light background */
.light-bg .btn-secondary {
  color: var(--text-secondary);
  border-color: var(--border);
}
.light-bg .btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== Section Base ===== */
.section {
  padding: 5rem 1.5rem;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-narrow {
  max-width: var(--max-width-narrow);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section-label.copper { color: var(--accent); }
.section-label.teal { color: var(--teal); }

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ===== Card Grid ===== */
.card-grid {
  display: grid;
  gap: 1.5rem;
}

.card-grid.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

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

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 2rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border);
}

.card-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.1rem;
  font-weight: 700;
  font-family: "JetBrains Mono", monospace;
}

.card-icon.copper {
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid rgba(208, 90, 40, 0.15);
}

.card-icon.teal {
  background: var(--teal-bg);
  color: var(--teal);
  border: 1px solid rgba(12, 140, 133, 0.15);
}

.card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.card p {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.card code {
  background: var(--bg-elevated);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.825em;
  color: var(--accent);
}

/* ===== Familiar / Surprise Sections ===== */
.section-familiar {
  background: var(--bg-base);
}

.section-surprise {
  background: var(--bg-elevated);
}

/* ===== Comparison Section ===== */
.comparison-section {
  padding: 5rem 1.5rem;
  background: var(--bg-base);
  border-top: 1px solid var(--border-subtle);
}

.comparison-inner {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  text-align: center;
}

.comparison-inner h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.comparison-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  text-align: left;
  margin-bottom: 1.5rem;
}

.comparison-col {
  border-radius: var(--radius);
  overflow: hidden;
}

.comparison-col h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.comparison-col pre {
  background: var(--bg-code);
  color: #d4d6e4;
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.65;
  margin: 0;
  border: 1px solid var(--border-subtle);
}

.comparison-col pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.comparison-caption {
  font-size: 0.925rem;
  color: var(--text-muted);
  font-style: italic;
}

/* ===== Steps Section (How It Works) ===== */
.steps-section {
  padding: 5rem 1.5rem;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
}

.steps-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.steps-inner h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.steps-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  text-align: left;
}

.step {
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--accent-bg);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  border: 1px solid rgba(208, 90, 40, 0.2);
}

.step h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.step p {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step code {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.825em;
}

/* ===== Install Section ===== */
.install-section {
  padding: 4rem 1.5rem;
  text-align: center;
  background: var(--bg-base);
  border-top: 1px solid var(--border-subtle);
}

.install-inner {
  max-width: 600px;
  margin: 0 auto;
}

.install-section h2 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.install-section pre {
  background: var(--bg-code);
  color: #d4d6e4;
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  overflow-x: auto;
  font-size: 0.9rem;
  text-align: left;
  margin-bottom: 1rem;
  border: 1px solid var(--border-subtle);
  position: relative;
}

.install-section p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* ===== Libraries Section ===== */
.libraries-section {
  padding: 5rem 1.5rem;
  background: var(--bg-base);
  border-top: 1px solid var(--border-subtle);
}

.libraries-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.library-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.library-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  position: relative;
}

.library-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md), 0 0 0 1px var(--accent);
}

.library-card-dotnet:hover {
  border-color: var(--teal);
  box-shadow: var(--shadow-md), 0 0 0 1px var(--teal);
}

.library-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.library-logo {
  color: var(--text-muted);
  flex-shrink: 0;
}

.library-header h3 {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.library-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--teal);
  background: var(--teal-bg);
  border: 1px solid var(--teal);
  border-radius: 3px;
  padding: 0.15em 0.5em;
}

.library-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.library-desc code {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  font-size: 0.85em;
}

.library-card pre {
  background: var(--bg-code);
  color: #d4d6e4;
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  overflow-x: auto;
  font-size: 0.85rem;
  border: 1px solid var(--border-subtle);
  position: relative;
}

.library-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.library-features span {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 0.2em 0.6em;
}

.library-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: auto;
}

.library-card-dotnet .library-link {
  color: var(--teal);
}

/* ===== Content Pages ===== */
.content-page {
  padding: 3rem 1.5rem;
}

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

.content-inner h1,
.docs-content h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--accent);
  letter-spacing: -0.02em;
}

.content-inner h2,
.docs-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.content-inner h3,
.docs-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.content-inner p,
.docs-content p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.content-inner pre,
.docs-content pre {
  background: var(--bg-code);
  color: #d4d6e4;
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.65;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-subtle);
  position: relative;
}

.content-inner code,
.docs-content code {
  background: var(--bg-elevated);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--accent);
}

.content-inner pre code,
.docs-content pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  color: inherit;
}

.content-inner ul, .content-inner ol,
.docs-content ul, .docs-content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
  color: var(--text-secondary);
}

.content-inner li,
.docs-content li {
  margin-bottom: 0.4rem;
}

.content-inner table,
.docs-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
}

.content-inner th, .content-inner td,
.docs-content th, .docs-content td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.content-inner th,
.docs-content th {
  font-weight: 600;
  background: var(--bg-elevated);
  color: var(--text);
}

.content-inner blockquote,
.docs-content blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1.25rem;
  margin: 1.25rem 0;
  color: var(--text-secondary);
  background: var(--accent-bg);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* Section list */
.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.page-list {
  list-style: none;
  padding: 0;
}

.page-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.page-list a {
  font-weight: 600;
  font-size: 1.05rem;
}

.page-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ===== Docs Layout ===== */
.docs-layout {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
  padding: 2.5rem 1.5rem;
}

.docs-sidebar {
  position: sticky;
  top: 5rem;
  align-self: start;
}

.docs-sidebar h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.docs-sidebar ul {
  list-style: none;
  padding: 0;
}

.docs-sidebar li {
  margin-bottom: 0.2rem;
}

.docs-sidebar a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  display: block;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
  text-decoration: none;
}
.docs-sidebar a:hover {
  background: var(--bg-elevated);
  color: var(--text);
  text-decoration: none;
}
.docs-sidebar li.active a {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

.docs-content {
  min-width: 0;
}

/* Table of contents (in-page) */
.docs-toc {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}

.docs-toc summary {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-muted);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.docs-toc nav {
  margin-top: 0.75rem;
}

.docs-toc ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.docs-toc li {
  margin-bottom: 0.25rem;
}

.docs-toc a {
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.docs-toc a:hover {
  color: var(--accent);
}

.docs-toc ul ul {
  padding-left: 1rem;
}

/* Prev/Next */
.docs-prevnext {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.docs-prevnext a {
  display: block;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.docs-prevnext a:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.docs-prevnext .pn-label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.docs-prevnext .pn-title {
  font-weight: 600;
  color: var(--text);
  font-size: 0.95rem;
}

.docs-prevnext .next {
  text-align: right;
}

.docs-prevnext .next:first-child {
  grid-column: 2;
}

/* ===== Copy Button ===== */
.copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: rgba(255,255,255,0.07);
  color: #8088a4;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.65rem;
  font-size: 0.7rem;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-weight: 500;
}
.copy-btn:hover {
  background: rgba(255,255,255,0.12);
  color: var(--accent);
}
.copy-btn.copied {
  background: rgba(232, 112, 64, 0.15);
  color: var(--accent);
  border-color: rgba(232, 112, 64, 0.25);
}

/* ===== Anchor Links ===== */
.docs-content h2,
.docs-content h3 {
  position: relative;
}

.heading-anchor {
  opacity: 0;
  color: var(--accent);
  text-decoration: none;
  margin-left: 0.4rem;
  font-weight: 400;
  transition: opacity var(--transition);
}

.docs-content h2:hover .heading-anchor,
.docs-content h3:hover .heading-anchor {
  opacity: 0.6;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-code);
  color: #6c7290;
  padding: 2.5rem 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  color: #9298b4;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
}
.footer-brand svg { width: 20px; height: 20px; }

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: #6c7290;
  text-decoration: none;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent); text-decoration: none; }

.spec-badge {
  display: inline-block;
  background: rgba(232, 112, 64, 0.12);
  color: var(--accent, #e87040);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2em 0.65em;
  border-radius: 100px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ===== 404 Page ===== */
.error-page {
  padding: 6rem 1.5rem;
  text-align: center;
}

.error-inner {
  max-width: 480px;
  margin: 0 auto;
}

.error-code {
  font-size: 5rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 1rem;
  font-family: "JetBrains Mono", monospace;
}

.error-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 1rem;
}

.error-pakt {
  background: var(--bg-code);
  color: #d4d6e4;
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  font-size: 0.85rem;
  text-align: left;
  margin: 1.5rem auto;
  max-width: 380px;
  border: 1px solid var(--border-subtle);
}

.error-actions {
  margin-top: 2rem;
}

/* ===== Animations ===== */
@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fade-in-up 0.5s ease both;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-toggle { display: block; }

  .nav-links { display: none; }

  .hero { padding: 3.5rem 1.25rem 3rem; }
  .hero-title { font-size: 2.25rem; }
  .hero-tagline { font-size: 1.05rem; }
  .hero-code pre { padding: 1rem 1.25rem; font-size: 0.8rem; }

  .section { padding: 3.5rem 1.25rem; }
  .section-title { font-size: 1.6rem; }

  .card-grid.cols-3,
  .card-grid.cols-2 {
    grid-template-columns: 1fr;
  }

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

  .docs-layout {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 1.5rem 1.25rem;
  }

  .docs-sidebar {
    position: static;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
  }

  .docs-prevnext { grid-template-columns: 1fr; }
  .docs-prevnext .next { text-align: left; }
  .docs-prevnext .next:first-child { grid-column: 1; }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .content-inner pre,
  .docs-content pre {
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    padding: 1rem 1.1rem;
  }

  /* Code block scroll hint */
  .docs-content pre::after,
  .content-inner pre::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 2rem;
    background: linear-gradient(to right, transparent, var(--bg-code));
    pointer-events: none;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    opacity: 0.5;
  }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.85rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-code pre { font-size: 0.75rem; padding: 0.85rem 1rem; }
  .section-title { font-size: 1.4rem; }
  .card { padding: 1.5rem; }
}

/* ===== High-contrast / reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
  }
}