:root {
  --bg: #070708;
  --bg-elev: #0e0e11;
  --bg-elev-2: #121216;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #f4f4f5;
  --muted: rgba(244, 244, 245, 0.62);
  --faint: rgba(244, 244, 245, 0.4);
  --green: #6ee7b7;
  --green-2: #34d399;
  --green-dim: rgba(110, 231, 183, 0.12);
  --blue: #93c5fd;
  --amber: #fcd34d;
  --red: #f87171;
  --radius: 14px;
  --font: "DM Sans", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  --sidebar-w: 248px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color 0.15s ease; }
::selection { background: rgba(110, 231, 183, 0.25); color: #fff; }

.docs { display: flex; min-height: 100vh; }

/* ---------- Sidebar ---------- */
.docs-sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: var(--bg-elev);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.02rem;
  border-bottom: 1px solid var(--line);
}
.brand-mark {
  width: 28px;
  height: 28px;
  display: inline-flex;
  flex-shrink: 0;
}
.brand-mark svg { width: 100%; height: 100%; border-radius: 8px; }

.docs-nav-group {
  padding: 18px 14px 0;
}
.docs-nav-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--faint);
  padding: 0 10px 8px;
  font-weight: 600;
}
.docs-link {
  display: block;
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.88rem;
}
.docs-link:hover { color: var(--text); background: rgba(255, 255, 255, 0.04); }
.docs-link.active { color: var(--green); background: var(--green-dim); }

.docs-sidebar-foot {
  margin-top: auto;
  padding: 16px 14px 20px;
  border-top: 1px solid var(--line);
}
.docs-back {
  display: block;
  text-align: center;
  padding: 8px;
  border-radius: 9px;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
}
.docs-back:hover { color: var(--green); border-color: rgba(110, 231, 183, 0.35); }

/* ---------- Main ---------- */
.docs-main {
  flex: 1;
  min-width: 0;
}
.docs-content {
  max-width: 780px;
  padding: 40px 48px 80px;
}

/* ---------- Section typography ---------- */
.doc-section { margin-bottom: 56px; }
.doc-section h1 {
  font-size: 2rem;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 10px;
}
.doc-section h2 {
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  margin: 32px 0 10px;
}
.doc-section h3 {
  font-size: 1.05rem;
  margin: 24px 0 8px;
}
.doc-section p {
  color: var(--muted);
  margin-bottom: 14px;
  max-width: 66ch;
}
.doc-section .lead {
  font-size: 1.05rem;
  color: var(--muted);
}
.doc-section ul, .doc-section ol {
  color: var(--muted);
  padding-left: 22px;
  margin-bottom: 14px;
  max-width: 66ch;
}
.doc-section li { margin-bottom: 6px; }
.doc-section a { color: var(--green); }
.doc-section a:hover { text-decoration: underline; }
.doc-section code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--bg-elev-2);
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: 6px;
  color: var(--green);
}
.doc-section strong { color: var(--text); }

/* ---------- Code block ---------- */
.code-block {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 16px 0;
}
.code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--faint);
}
.code-block pre {
  padding: 16px 18px;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--muted);
  overflow-x: auto;
}
.code-block .ky { color: var(--blue); }
.code-block .st { color: var(--green); }
.code-block .kw { color: var(--amber); }
.code-block .cmt { color: var(--faint); }

/* ---------- Callout ---------- */
.callout {
  border-left: 3px solid var(--green);
  background: var(--green-dim);
  border-radius: 0 10px 10px 0;
  padding: 14px 16px;
  margin: 16px 0;
  font-size: 0.9rem;
  color: var(--muted);
}
.callout strong { color: var(--green); }
.callout.warn { border-left-color: var(--amber); background: rgba(252, 211, 77, 0.08); }
.callout.warn strong { color: var(--amber); }

/* ---------- Table ---------- */
.doc-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 0.88rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.doc-table th, .doc-table td {
  text-align: left;
  padding: 11px 16px;
  border-bottom: 1px solid var(--line);
}
.doc-table th {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--faint);
  background: rgba(255, 255, 255, 0.02);
}
.doc-table td { color: var(--muted); }
.doc-table tr:last-child td { border-bottom: 0; }
.doc-table td code { font-size: 0.8em; }

@media (max-width: 860px) {
  .docs-sidebar { display: none; }
  .docs-content { padding: 28px 20px 60px; }
}