:root {
  color-scheme: light dark;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-alt: #eef2f8;
  --text: #182033;
  --muted: #5c677d;
  --border: #d8deea;
  --accent: #2457d6;
  --code: #111827;
  --code-text: #e5e7eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1420;
    --surface: #171e2c;
    --surface-alt: #20293a;
    --text: #e8edf7;
    --muted: #a8b2c5;
    --border: #334057;
    --accent: #82aaff;
    --code: #090d14;
    --code-text: #e5e7eb;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: var(--accent); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 64px;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(12px);
}

.topbar > a {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

#nav-toggle {
  display: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 10px;
  background: var(--surface-alt);
  color: var(--text);
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  color: var(--muted);
}

.search-box input {
  width: min(36vw, 440px);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--surface);
  color: var(--text);
}

.search-results {
  position: fixed;
  z-index: 30;
  top: 58px;
  right: 20px;
  width: min(680px, calc(100vw - 40px));
  max-height: 72vh;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  box-shadow: 0 18px 55px rgb(0 0 0 / 25%);
}

.search-results a {
  display: block;
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
}

.search-results a:hover { background: var(--surface-alt); }
.search-results span { margin-left: 8px; color: var(--muted); font-size: 0.85rem; }
.search-results p { margin: 4px 0 0; color: var(--muted); font-size: 0.9rem; }
.no-results { padding: 16px; }

.layout {
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
  max-width: 1600px;
  margin: 0 auto;
}

.sidebar {
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow-y: auto;
  padding: 24px 18px 80px;
  border-right: 1px solid var(--border);
  background: var(--surface);
}

.sidebar h2 {
  margin: 26px 8px 8px;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sidebar ul { margin: 0; padding: 0; list-style: none; }
.sidebar li { margin: 2px 0; }
.sidebar a {
  display: block;
  border-radius: 6px;
  padding: 7px 9px;
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.3;
  text-decoration: none;
}
.sidebar a:hover, .sidebar a.active { background: var(--surface-alt); color: var(--accent); }
.home-link { font-weight: 700; }

.content {
  width: min(100%, 1050px);
  padding: 42px clamp(24px, 5vw, 80px) 100px;
}

.content h1 { font-size: clamp(2rem, 4vw, 3.3rem); line-height: 1.12; }
.content h2 { margin-top: 2.2em; border-bottom: 1px solid var(--border); padding-bottom: 0.3em; }
.content h3 { margin-top: 1.8em; }
.content h4 { margin-top: 1.5em; }
.source-path, .build-summary { color: var(--muted); }

pre {
  overflow-x: auto;
  border-radius: 8px;
  padding: 16px;
  background: var(--code);
  color: var(--code-text);
}

code {
  border-radius: 4px;
  padding: 0.12em 0.35em;
  background: var(--surface-alt);
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 0.9em;
}

pre code { padding: 0; background: transparent; color: inherit; }

table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}

th, td { border: 1px solid var(--border); padding: 9px 12px; text-align: left; vertical-align: top; }
th { background: var(--surface-alt); }
blockquote { margin-left: 0; border-left: 4px solid var(--accent); padding-left: 16px; color: var(--muted); }

.document-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.document-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  background: var(--surface);
}

.document-card p, .document-card span { color: var(--muted); font-size: 0.82rem; }
.document-card h2 { margin: 6px 0; border: 0; font-size: 1.08rem; }

@media (max-width: 850px) {
  #nav-toggle { display: inline-block; }
  .topbar > a { display: none; }
  .search-box { width: 100%; }
  .search-box span { display: none; }
  .search-box input { width: 100%; }
  .layout { display: block; }
  .sidebar {
    position: fixed;
    z-index: 25;
    top: 64px;
    bottom: 0;
    left: 0;
    width: min(88vw, 330px);
    height: auto;
    transform: translateX(-105%);
    transition: transform 160ms ease;
    box-shadow: 12px 0 40px rgb(0 0 0 / 25%);
  }
  .sidebar.open { transform: translateX(0); }
  .content { padding: 28px 20px 80px; }
}