:root {
  --bg: #080c1a;
  --bg2: #0b1124;
  --surface: #111831;
  --surface2: #0e1428;
  --ink: #eef1fb;
  --muted: #94a0c0;
  --line: #1f2845;
  --accent: #3b82f6;
  --accent2: #7c4dff;
  --green: #0fae6f;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --sidebar-w: 260px;
  --top-h: 60px;
}

html[data-theme="light"] {
  --bg: #f6f7fb;
  --bg2: #eef1f8;
  --surface: #ffffff;
  --surface2: #f4f6fc;
  --ink: #0b1020;
  --muted: #5c6680;
  --line: #e3e7f2;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  background-image:
    radial-gradient(1100px 560px at 90% -10%, rgba(59, 130, 246, .14), transparent 55%),
    radial-gradient(900px 500px at -10% 0%, rgba(124, 77, 255, .12), transparent 55%);
  -webkit-font-smoothing: antialiased;
  line-height: 1.65;
}
html[data-theme="light"] body {
  background-image:
    radial-gradient(1100px 560px at 90% -10%, rgba(59, 130, 246, .08), transparent 55%),
    radial-gradient(900px 500px at -10% 0%, rgba(124, 77, 255, .06), transparent 55%);
}

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

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 8px 14px;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  z-index: 200;
}
.skip:focus { left: 12px; top: 12px; }

/* top bar */
.docs-top {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--top-h);
  border-bottom: 1px solid var(--line);
  background: rgba(8, 12, 26, .78);
  backdrop-filter: blur(10px);
}
html[data-theme="light"] .docs-top { background: rgba(255, 255, 255, .82); }
.docs-top-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
  text-decoration: none;
}
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; }
.docs-badge {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
}
.docs-top .spacer { flex: 1; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: 11px;
  font-weight: 600;
  font-size: 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  text-decoration: none;
  transition: .15s;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 10px 26px -12px var(--accent);
}
.btn.ghost { background: transparent; }
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
}
.theme-toggle svg { width: 17px; height: 17px; }
.btn.icon {
  padding: 0;
  width: 38px;
  height: 38px;
  justify-content: center;
}
.menu-btn { display: none; }

/* layout */
.docs-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 20px 80px;
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  gap: 40px;
  align-items: start;
}

/* sidebar */
.docs-side {
  position: sticky;
  top: calc(var(--top-h) + 24px);
  max-height: calc(100vh - var(--top-h) - 48px);
  overflow-y: auto;
  padding-right: 8px;
}
.docs-side::-webkit-scrollbar { width: 6px; }
.docs-side::-webkit-scrollbar-thumb { background: var(--line); border-radius: 6px; }

.docs-intro {
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.docs-intro h1 {
  margin: 0 0 8px;
  font-size: 22px;
  letter-spacing: -.02em;
  line-height: 1.2;
}
.docs-intro p {
  margin: 0;
  font-size: 13.5px;
  color: var(--muted);
}

.nav-group { margin-bottom: 18px; }
.nav-group h4 {
  margin: 0 0 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--accent);
}
.nav-group a {
  display: block;
  padding: 6px 10px;
  margin: 1px 0;
  border-radius: 8px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
}
.nav-group a:hover { color: var(--ink); background: var(--surface); text-decoration: none; }
.nav-group a.active {
  color: var(--ink);
  background: rgba(59, 130, 246, .12);
  border: 1px solid rgba(59, 130, 246, .25);
}

/* main */
.docs-main { min-width: 0; }
.docs-main > section {
  scroll-margin-top: calc(var(--top-h) + 20px);
  margin-bottom: 52px;
}
.docs-main h2 {
  font-size: clamp(24px, 3.5vw, 32px);
  letter-spacing: -.02em;
  margin: 0 0 12px;
  line-height: 1.15;
}
.docs-main h3 {
  font-size: 18px;
  margin: 28px 0 10px;
  letter-spacing: -.01em;
}
.docs-main p,
.docs-main li {
  font-size: 15px;
  color: var(--muted);
}
.docs-main p strong,
.docs-main li strong { color: var(--ink); }
.docs-main > section > p.lead {
  font-size: 16.5px;
  margin: 0 0 20px;
  max-width: 640px;
}
.docs-main ul,
.docs-main ol {
  margin: 0 0 16px;
  padding-left: 1.35em;
}
.docs-main li { margin-bottom: 6px; }

.callout {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  padding: 16px 18px;
  margin: 18px 0;
}
.callout.green { border-color: rgba(15, 174, 111, .35); background: rgba(15, 174, 111, .08); }
.callout p { margin: 0; font-size: 14px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 16px 0 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}
th, td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
th {
  background: var(--surface2);
  color: var(--ink);
  font-weight: 600;
  font-size: 13px;
}
td { color: var(--muted); }
tr:last-child td { border-bottom: none; }

pre, code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
}
code {
  background: rgba(59, 130, 246, .12);
  color: var(--accent);
  padding: 2px 7px;
  border-radius: 6px;
}
pre {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  overflow-x: auto;
  margin: 14px 0 20px;
  color: #cdd6f0;
  line-height: 1.5;
}
html[data-theme="light"] pre { color: var(--ink); }

/* site footer (matches landing page) */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 52px 0 28px;
  color: var(--muted);
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(200px, 1.25fr) repeat(3, 1fr);
  gap: 36px 24px;
  align-items: start;
}
.footer-brand .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
  text-decoration: none;
  margin-bottom: 12px;
}
.footer-brand .brand:hover { text-decoration: none; }
.footer-brand .brand img { width: 30px; height: 30px; }
.footer-brand p { margin: 0; font-size: 13.5px; line-height: 1.55; max-width: 280px; }
.footer-col h4 {
  margin: 0 0 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--accent);
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col a {
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
}
.footer-col a:hover { color: var(--ink); text-decoration: none; }
.footer-bottom {
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
}
.footer-bottom a { color: var(--muted); text-decoration: none; }
.footer-bottom a:hover { color: var(--ink); text-decoration: underline; }
.footer-meta { color: var(--muted); }

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 20px; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .menu-btn { display: inline-flex; }
  .docs-shell { grid-template-columns: 1fr; gap: 0; }
  .docs-side {
    position: fixed;
    top: var(--top-h);
    left: 0;
    bottom: 0;
    width: min(300px, 88vw);
    z-index: 55;
    background: var(--bg2);
    border-right: 1px solid var(--line);
    padding: 20px 16px 32px;
    transform: translateX(-105%);
    transition: transform .2s ease;
    max-height: none;
  }
  .docs-side.open { transform: translateX(0); }
  .docs-overlay {
    display: none;
    position: fixed;
    inset: var(--top-h) 0 0 0;
    background: rgba(0, 0, 0, .45);
    z-index: 50;
  }
  .docs-overlay.show { display: block; }
}

@media (max-width: 520px) {
  .docs-badge { display: none; }
  .docs-top .btn.ghost { display: none; }
}