:root {
  --bg: #ffffff;
  --bg-soft: #f7f8fb;
  --surface: rgba(255, 255, 255, 0.86);
  --panel: #ffffff;
  --border: #e6e8ef;
  --border-strong: #d5d9e4;
  --text: #17181c;
  --muted: #606776;
  --soft: #8c94a4;
  --brand: #646cff;
  --brand-dark: #535bf2;
  --brand-soft: #eef0ff;
  --code-bg: #f6f8fa;
  --shadow: 0 18px 60px rgba(29, 35, 61, 0.08);
  --sidebar: 248px;
  --content: 832px;
}

[data-theme="dark"] {
  --bg: #090a0f;
  --bg-soft: #11131a;
  --surface: rgba(9, 10, 15, 0.82);
  --panel: #0f1118;
  --border: #252938;
  --border-strong: #34394c;
  --text: #f5f6fb;
  --muted: #a8afc0;
  --soft: #737b91;
  --brand: #8b92ff;
  --brand-dark: #a7abff;
  --brand-soft: rgba(139, 146, 255, 0.14);
  --code-bg: #121520;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.34);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  background:
    radial-gradient(900px 520px at 16% 0%, rgba(34, 211, 238, 0.14), transparent 60%),
    radial-gradient(760px 480px at 72% 6%, rgba(167, 139, 250, 0.16), transparent 58%),
    linear-gradient(180deg, var(--bg-soft), var(--bg) 34%);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input { font: inherit; }

button { color: inherit; }

h1,
h2,
h3,
p { margin: 0; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(18px);
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: 22px;
  width: min(1400px, 100% - 32px);
  height: 58px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  height: 34px;
}

.brand img {
  display: block;
  width: auto;
  height: 100%;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.topnav a {
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}

.topnav a:hover,
.topnav a.active {
  color: var(--text);
  background: var(--brand-soft);
}

.top-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex: 1;
  min-width: 0;
}

.search-trigger,
.icon-button,
.language-switch {
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-soft) 78%, transparent);
  box-shadow: 0 1px 2px rgba(31, 35, 40, 0.04);
}

.search-trigger {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  width: min(260px, 32vw);
  min-height: 36px;
  padding: 0 8px 0 12px;
  border-radius: 999px;
  color: var(--muted);
  cursor: pointer;
}

.search-trigger svg,
.search-box svg,
.icon-button svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.search-trigger svg,
.search-box svg,
.icon-button .sun,
.icon-button .moon {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.search-trigger span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
}

.search-trigger kbd {
  margin-left: auto;
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  color: var(--soft);
  font-size: 11px;
  font-weight: 650;
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  color: var(--muted);
  cursor: pointer;
}

.icon-button:hover,
.search-trigger:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--panel);
}

.github-link svg {
  fill: currentColor;
  stroke: none;
}

.theme-toggle .moon { display: none; }

[data-theme="dark"] .theme-toggle .sun { display: none; }

[data-theme="dark"] .theme-toggle .moon { display: block; }

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border-radius: 999px;
}

.language-switch a {
  min-width: 42px;
  padding: 4px 8px;
  border-radius: 999px;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
  font-weight: 600;
}

.language-switch a:hover,
.language-switch a.active {
  color: var(--text);
  background: var(--panel);
}

.docs-shell {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, var(--content));
  gap: 48px;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.sidebar {
  position: sticky;
  top: 82px;
  align-self: start;
  height: calc(100vh - 104px);
  padding: 8px 0 32px;
  border-right: 1px solid var(--border);
  overflow: auto;
}

.sidebar-title {
  margin: 0 24px 12px 0;
  color: var(--soft);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.sidebar a {
  display: block;
  margin-right: 24px;
  padding: 7px 12px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
}

.sidebar a:hover,
.sidebar a.active {
  color: var(--text);
  background: var(--brand-soft);
}

.content {
  min-width: 0;
  padding: 28px 0 96px;
}