*,
*::before,
*::after { box-sizing: border-box; }

:root {
  --bg: #0B0F1A;
  --bg-card: rgba(17, 24, 39, 0.86);
  --bg-elevated: rgba(15, 23, 42, 0.88);
  --bg-code: #101827;
  --border: rgba(56, 189, 248, 0.16);
  --border-strong: rgba(56, 189, 248, 0.28);
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #38BDF8;
  --accent-soft: rgba(56, 189, 248, 0.12);
  --yellow: #EAB308;
  --shadow: 0 24px 70px rgba(2, 6, 23, 0.36);
  --radius: 16px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', monospace;
}

html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: #7dd3fc; }

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(56, 189, 248, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.bg-glow {
  position: fixed;
  z-index: -1;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.12;
  pointer-events: none;
}

.bg-glow-1 { top: -160px; right: -80px; background: var(--accent); }
.bg-glow-2 { bottom: -180px; left: -80px; background: #A78BFA; }

.container { max-width: 1440px; margin: 0 auto; padding: 0 24px; }

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 0;
  background: rgba(11, 15, 26, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(31, 41, 55, 0.5);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

.navbar-logo svg {
  width: 28px;
  height: 28px;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.navbar-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.navbar-links a.active,
.navbar-links a:hover { color: var(--text); }

.navbar .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  font-family: var(--font);
}

.navbar .btn svg {
  width: 1.65em;
  height: 1.65em;
  flex: none;
}

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

.navbar .btn-secondary:hover {
  border-color: var(--accent);
  background: rgba(56, 189, 248, 0.08);
}

.docs-layout {
  display: grid;
  grid-template-columns: minmax(250px, 300px) minmax(0, 1fr) minmax(180px, 220px);
  gap: 28px;
  padding-top: 36px;
  padding-bottom: 48px;
  align-items: start;
}

.docs-sidebar,
.docs-toc {
  position: sticky;
  top: 104px;
}

.sidebar-card,
.docs-nav-group,
.docs-article {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.intro-card {
  padding: 20px;
  margin-bottom: 18px;
}

.sidebar-label {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  font-size: 0.72rem;
  margin-bottom: 10px;
}

.intro-card h2 {
  margin: 0 0 10px;
  font-size: 1.35rem;
  line-height: 1.2;
}

.intro-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.96rem;
}

.sidebar-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 0.88rem;
  font-weight: 700;
  transition: 0.2s ease;
}

.btn-primary {
  background: var(--accent);
  color: #0b0f1a;
}

.btn-primary:hover {
  color: #0b0f1a;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--accent-soft);
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-secondary:hover { border-color: var(--border-strong); }

.source-path {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(56, 189, 248, 0.1);
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.docs-nav-group {
  padding: 16px 18px;
  margin-bottom: 14px;
}

.docs-nav-group h3 {
  margin: 0 0 12px;
  color: var(--text);
  font-size: 0.98rem;
}

.docs-nav-subgroup + .docs-nav-subgroup,
.docs-nav-group ul + .docs-nav-subgroup {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(56, 189, 248, 0.08);
}

.docs-nav-subheading {
  margin-bottom: 10px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.docs-nav-group ul,
.docs-toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.docs-nav-group li + li,
.docs-toc li + li { margin-top: 8px; }

.docs-nav-group a,
.docs-toc a {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.docs-nav-group a.active,
.docs-nav-group a:hover,
.docs-toc a:hover,
.docs-toc a:focus-visible {
  color: var(--text);
}

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

.docs-article {
  padding: clamp(24px, 3vw, 40px);
}

.docs-article > :first-child { margin-top: 0; }
.docs-article > :last-child { margin-bottom: 0; }

.docs-article h1,
.docs-article h2,
.docs-article h3,
.docs-article h4,
.docs-article h5,
.docs-article h6 {
  position: relative;
  margin-top: 2.1em;
  margin-bottom: 0.7em;
  line-height: 1.2;
  color: #f8fafc;
}

.docs-article h1 { font-size: clamp(2rem, 4vw, 2.8rem); margin-top: 0; }
.docs-article h2 { font-size: 1.55rem; }
.docs-article h3 { font-size: 1.22rem; }

.heading-anchor {
  position: absolute;
  left: -1.2em;
  opacity: 0;
  color: var(--accent);
}

.docs-article h1:hover .heading-anchor,
.docs-article h2:hover .heading-anchor,
.docs-article h3:hover .heading-anchor,
.docs-article h4:hover .heading-anchor,
.docs-article h5:hover .heading-anchor,
.docs-article h6:hover .heading-anchor { opacity: 1; }

.docs-article p,
.docs-article li,
.docs-article td,
.docs-article th {
  color: var(--text);
}

.docs-article p { margin: 0 0 1.1em; }

.docs-article ul,
.docs-article ol {
  margin: 0 0 1.2em 1.3em;
  padding: 0;
}

.docs-article li > p:first-child { margin-top: 0; }
.docs-article li > p:last-child { margin-bottom: 0; }
.docs-article li + li { margin-top: 0.45em; }

.docs-article code {
  font-family: var(--mono);
  font-size: 0.92em;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.14);
  border-radius: 8px;
  padding: 0.16em 0.4em;
}

.code-block {
  margin: 1.25em 0 1.5em;
  border: 1px solid rgba(56, 189, 248, 0.18);
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-code);
}

.code-block pre {
  margin: 0;
  padding: 18px;
  overflow-x: auto;
}

.code-block code {
  background: none;
  border: none;
  padding: 0;
}

.table-wrap {
  overflow-x: auto;
  margin: 1.25em 0 1.5em;
  border: 1px solid rgba(56, 189, 248, 0.14);
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.74);
}

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

th,
td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(56, 189, 248, 0.1);
  text-align: left;
  vertical-align: top;
}

th {
  color: #f8fafc;
  background: rgba(56, 189, 248, 0.08);
}

tbody tr:last-child td { border-bottom: none; }

.docs-toc .sidebar-card {
  padding: 16px 18px;
}

.toc-level-3 { margin-left: 12px; }

.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-bottom: 16px;
  list-style: none;
  padding: 0;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

@media (max-width: 1180px) {
  .docs-layout {
    grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  }

  .docs-toc { display: none; }
}

@media (max-width: 860px) {
  .navbar .container {
    min-height: auto;
    padding-top: 18px;
    padding-bottom: 18px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .docs-layout {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .docs-sidebar,
  .docs-toc {
    position: static;
  }

  .heading-anchor { display: none; }
}