@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --font-sans:  'Inter', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', monospace;
  --rail-bg:    #0a1628;
  --sb-bg:      #111c2d;
  --content-bg: #16243a;
  --card-bg:    #1e2f47;
  --card-hover: #243650;
  --cobalt:     #2563eb;
  --cobalt-soft:rgba(37,99,235,0.15);
  --cobalt-ink: #93c5fd;
  --ink:   #e2eaf4;
  --ink-2: #b4c0d0;
  --ink-3: #a0afc1;
  --ink-4: #8595a8;
  --ink-5: #263447;
  --hairline:        rgba(255,255,255,0.06);
  --hairline-strong: rgba(255,255,255,0.1);
  --surface:   #1e2f47;
  --surface-2: #243650;
  --rose:   #ef4444;
  --amber:  #f59e0b;
  --sage:   #22c55e;
  --r-2: 6px; --r-3: 10px; --r-4: 16px;
  --header-h: 52px;
  --sidebar-w: 240px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: var(--font-sans);
  background: var(--content-bg);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Header ───────────────────────────────────────────────── */
.docs-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  background: var(--rail-bg);
  border-bottom: 1px solid var(--hairline);
  display: flex; align-items: center; gap: 12px;
  padding: 0 20px;
}
.docs-header-logo {
  display: flex; align-items: center; gap: 8px;
  font-size: 15px; font-weight: 700; color: var(--ink);
  text-decoration: none;
}
.docs-header-logo-badge {
  font-size: 10px; font-weight: 600; color: var(--ink-4);
  background: var(--surface); border-radius: var(--r-2);
  padding: 2px 6px; letter-spacing: 0.05em; text-transform: uppercase;
}
.docs-header-spacer { flex: 1; }
.docs-header-search {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface); border: 1px solid var(--hairline-strong);
  border-radius: var(--r-2); padding: 5px 10px;
  color: var(--ink-4); font-size: 13px; cursor: pointer;
  min-width: 180px;
}
.docs-header-search kbd {
  margin-left: auto; font-size: 11px; color: var(--ink-4);
  background: var(--card-bg); border-radius: 4px; padding: 1px 5px;
}
.docs-lang-switch {
  display: flex; align-items: center;
  background: var(--surface); border-radius: var(--r-2);
  overflow: hidden; border: 1px solid var(--hairline-strong);
}
.docs-lang-switch a {
  padding: 4px 10px; font-size: 12px; font-weight: 500;
  color: var(--ink-3); text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.docs-lang-switch a.active {
  background: var(--cobalt); color: #fff;
}
.docs-lang-switch a:not(.active):hover {
  background: var(--card-hover); color: var(--ink);
}

/* ── Layout ───────────────────────────────────────────────── */
.docs-layout {
  display: flex;
  padding-top: var(--header-h);
  min-height: 100vh;
}

/* ── Sidebar ──────────────────────────────────────────────── */
.docs-sidebar {
  position: fixed;
  top: var(--header-h); left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--sb-bg);
  border-right: 1px solid var(--hairline);
  overflow-y: auto;
  padding: 16px 0;
}
.docs-sidebar::-webkit-scrollbar { width: 4px; }
.docs-sidebar::-webkit-scrollbar-thumb { background: var(--hairline-strong); border-radius: 2px; }

.docs-nav-group { margin-bottom: 4px; }
.docs-nav-group-label {
  font-size: 11px; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--ink-4);
  padding: 10px 16px 4px;
}
.docs-nav-link {
  display: block; padding: 6px 16px 6px 20px;
  font-size: 13px; color: var(--ink-3);
  border-left: 2px solid transparent;
  transition: color 0.12s, background 0.12s, border-color 0.12s;
}
.docs-nav-link:hover {
  color: var(--ink); background: var(--hairline); text-decoration: none;
}
.docs-nav-link.active {
  color: var(--cobalt-ink);
  border-left-color: var(--cobalt);
  background: var(--cobalt-soft);
}

/* ── Content ──────────────────────────────────────────────── */
.docs-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: 40px 48px;
  max-width: 860px;
}

.docs-breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--ink-4); margin-bottom: 24px;
}
.docs-breadcrumb span { color: var(--ink-5); }

.docs-article h1 {
  font-size: 26px; font-weight: 700; color: var(--ink);
  margin-bottom: 8px; line-height: 1.3;
}
.docs-article .docs-meta {
  font-size: 12px; color: var(--ink-4); margin-bottom: 32px;
}
.docs-article h2 {
  font-size: 17px; font-weight: 600; color: var(--ink);
  margin: 32px 0 10px; padding-bottom: 6px;
  border-bottom: 1px solid var(--hairline);
}
.docs-article h3 {
  font-size: 14px; font-weight: 600; color: var(--ink-2);
  margin: 20px 0 6px;
}
.docs-article p { margin-bottom: 14px; color: var(--ink-2); }
.docs-article ul, .docs-article ol {
  margin: 0 0 14px 20px; color: var(--ink-2);
}
.docs-article li { margin-bottom: 4px; }
.docs-article code {
  font-family: var(--font-mono); font-size: 12px;
  background: var(--card-bg); border: 1px solid var(--hairline-strong);
  border-radius: var(--r-2); padding: 1px 5px; color: var(--cobalt-ink);
}
.docs-article pre {
  background: var(--rail-bg); border: 1px solid var(--hairline-strong);
  border-radius: var(--r-3); padding: 16px; overflow-x: auto;
  margin-bottom: 14px;
}
.docs-article pre code {
  background: none; border: none; padding: 0;
  font-size: 13px; color: var(--ink-2);
}
.docs-article .callout {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 12px 14px; border-radius: var(--r-3);
  margin-bottom: 14px; font-size: 13px;
}
.docs-article .callout-info {
  background: var(--cobalt-soft); border: 1px solid rgba(37,99,235,0.25);
  color: var(--cobalt-ink);
}
.docs-article .callout-warn {
  background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.25);
  color: #fcd34d;
}

/* ── 404 ──────────────────────────────────────────────────── */
.docs-404 {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; min-height: 60vh; text-align: center; gap: 12px;
}
.docs-404 h1 { font-size: 48px; font-weight: 700; color: var(--ink-5); }
.docs-404 p  { color: var(--ink-3); }

/* ── Mobile ───────────────────────────────────────────────── */
@media (max-width: 768px) {
  .docs-sidebar { display: none; }
  .docs-content { margin-left: 0; padding: 24px 20px; }
}