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

:root {
  --bg-deep: #0a0a0f;
  --bg-surface: #111118;
  --bg-card: #16161f;
  --bg-card-hover: #1c1c28;
  --border: #2a2a3a;
  --border-bright: #3a3a50;
  --text-primary: #e8e8f0;
  --text-secondary: #8888a0;
  --text-dim: #555570;
  --accent: #00ff88;
  --accent-dim: #00cc6a;
  --accent-glow: rgba(0, 255, 136, 0.15);
  --accent-glow-strong: rgba(0, 255, 136, 0.3);
  --warning: #ffaa00;
  --error: #ff4466;
  --blue: #4488ff;
  --purple: #aa66ff;
  --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", monospace;
  --font-sans: "Instrument Sans", -apple-system, system-ui, sans-serif;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --sidebar-width: 260px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* ─── Noise Overlay ──────────────────────────────────────────── */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
}

/* ─── Top Nav ─────────────────────────────────────────────────── */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}
.top-nav .nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
}
.nav-brand .prompt {
  color: var(--accent);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--text-primary);
  text-decoration: none;
}
.nav-links .gh-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition:
    border-color 0.2s,
    background 0.2s;
}
.nav-links .gh-link:hover {
  border-color: var(--border-bright);
  background: var(--bg-card);
}

/* ─── Docs Layout ─────────────────────────────────────────────── */
.docs-layout {
  display: flex;
  margin-top: 57px; /* nav height */
  min-height: calc(100vh - 57px);
}

/* ─── Sidebar ─────────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 57px;
  left: 0;
  width: var(--sidebar-width);
  height: calc(100vh - 57px);
  overflow-y: auto;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  padding: 1.5rem 0;
  z-index: 50;
}
.sidebar-section {
  padding: 0 1.25rem;
  margin-bottom: 1.5rem;
}
.sidebar-section h3 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
  padding: 0 0.5rem;
}
.sidebar-section a {
  display: block;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition:
    color 0.15s,
    background 0.15s;
}
.sidebar-section a:hover {
  color: var(--text-primary);
  background: var(--bg-card);
  text-decoration: none;
}
.sidebar-section a.active {
  color: var(--accent);
  background: var(--accent-glow);
}

/* ─── Main Content ────────────────────────────────────────────── */
.docs-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 3rem 4rem;
  max-width: 960px;
  margin-right: auto;
  margin-left: calc(var(--sidebar-width) + max(0px, (100vw - var(--sidebar-width) - 960px) / 2));
}

.docs-content h1 {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.docs-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.docs-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.docs-content p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

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

.docs-content li {
  margin-bottom: 0.35rem;
  line-height: 1.6;
}

.docs-content code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-card);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.docs-content .lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
}

/* ─── Code Blocks ─────────────────────────────────────────────── */
.code-block {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.code-block-header {
  display: flex;
  align-items: center;
  padding: 0.65rem 1rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
}
.code-block-header .lang-tag {
  margin-left: auto;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.65rem;
  text-transform: uppercase;
}
.code-block pre {
  padding: 1.25rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.75;
}
.code-block pre code {
  color: var(--text-secondary);
  background: none;
  padding: 0;
  border: none;
  border-radius: 0;
  font-size: inherit;
}
.code-block .kw {
  color: var(--purple);
}
.code-block .fn {
  color: var(--blue);
}
.code-block .str {
  color: var(--accent);
}
.code-block .num {
  color: var(--warning);
}
.code-block .cm {
  color: var(--text-dim);
  font-style: italic;
}
.code-block .op {
  color: var(--text-primary);
}
.code-block .prop {
  color: var(--error);
}
.code-block .type {
  color: var(--warning);
}
.code-block .key {
  color: var(--blue);
}

/* ─── Feature Cards Grid (docs hub) ──────────────────────────── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 2rem;
}
.feature-link {
  display: block;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition:
    border-color 0.3s,
    transform 0.3s,
    box-shadow 0.3s;
}
.feature-link:hover {
  border-color: var(--border-bright);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  text-decoration: none;
}
.feature-link h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 0;
  margin-bottom: 0.4rem;
}
.feature-link p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}
.feature-link .badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}
.badge-green {
  background: rgba(0, 255, 136, 0.1);
  color: var(--accent);
  border: 1px solid rgba(0, 255, 136, 0.2);
}
.badge-blue {
  background: rgba(68, 136, 255, 0.1);
  color: var(--blue);
  border: 1px solid rgba(68, 136, 255, 0.2);
}
.badge-purple {
  background: rgba(170, 102, 255, 0.1);
  color: var(--purple);
  border: 1px solid rgba(170, 102, 255, 0.2);
}
.badge-amber {
  background: rgba(255, 170, 0, 0.1);
  color: var(--warning);
  border: 1px solid rgba(255, 170, 0, 0.2);
}
.badge-red {
  background: rgba(255, 68, 102, 0.1);
  color: var(--error);
  border: 1px solid rgba(255, 68, 102, 0.2);
}

/* ─── Endpoint Table ──────────────────────────────────────────── */
.endpoint-table {
  width: 100%;
  margin: 1.5rem 0;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.endpoint-table th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 2px solid var(--border-bright);
  color: var(--text-secondary);
}
.endpoint-table td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.endpoint-table td:first-child {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
}
.endpoint-table tr:last-child td {
  border-bottom: none;
}

/* ─── Comparison Table ───────────────────────────────────────── */
.comparison-table {
  width: 100%;
  margin-top: 1.5rem;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.comparison-table th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 2px solid var(--border-bright);
  color: var(--text-secondary);
}
.comparison-table th:nth-child(2) {
  color: var(--accent);
}
.comparison-table td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.comparison-table td:first-child {
  font-weight: 500;
  color: var(--text-primary);
}
.comparison-table tr:last-child td {
  border-bottom: none;
}
.comparison-table .yes {
  color: var(--accent);
  font-weight: 600;
}
.comparison-table .no {
  color: var(--text-dim);
}
.comparison-table .partial {
  color: var(--warning);
}

/* ─── Info Box ────────────────────────────────────────────────── */
.info-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}
.info-box p {
  margin: 0;
}

/* ─── Footer ─────────────────────────────────────────────────── */
.docs-footer {
  margin-left: calc(var(--sidebar-width) + max(0px, (100vw - var(--sidebar-width) - 960px) / 2));
  margin-right: auto;
  padding: 3rem 4rem;
  max-width: 960px;
  border-top: 1px solid var(--border);
}
.docs-footer .footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-left {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
}
.footer-left span {
  color: var(--accent);
}
.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.footer-links a {
  color: var(--text-dim);
  font-size: 0.85rem;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

/* ─── Mobile Sidebar Toggle ───────────────────────────────────── */
.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.25rem;
}

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .docs-content {
    padding: 2rem;
    margin-left: var(--sidebar-width);
    margin-right: 0;
  }
  .docs-footer {
    padding: 2rem;
  }
}

@media (max-width: 768px) {
  .sidebar-toggle {
    display: block;
  }
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s var(--ease-out-expo);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .docs-content,
  .docs-footer {
    margin-left: 0;
  }
  .docs-content {
    padding: 1.5rem;
  }
  .docs-footer {
    padding: 1.5rem;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .nav-links a:not(.gh-link) {
    display: none;
  }
  .comparison-table {
    font-size: 0.78rem;
  }
  .comparison-table th,
  .comparison-table td {
    padding: 0.5rem;
  }
}