/* OneAnalytics docs — matches the main app's design tokens. */

:root {
  /* Brand + neutral scale, mirrors apps/web/src/app/globals.css */
  --brand-60: 212 100% 40%;   /* #0057B7 */
  --brand-70: 212 100% 34%;
  --brand-80: 212 100% 28%;

  --fg-1: 0 0% 14%;
  --fg-2: 0 0% 38%;
  --fg-3: 0 0% 56%;

  --bg-0: 0 0% 100%;
  --bg-1: 0 0% 98%;
  --bg-2: 0 0% 95%;

  --border: 0 0% 88%;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg-1: 0 0% 94%;
    --fg-2: 0 0% 70%;
    --fg-3: 0 0% 50%;
    --bg-0: 0 0% 6%;
    --bg-1: 0 0% 10%;
    --bg-2: 0 0% 14%;
    --border: 0 0% 22%;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  color: hsl(var(--fg-1));
  background: hsl(var(--bg-0));
}

body {
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  font-feature-settings: "cv11", "ss01";
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  line-height: 20px;
}

a {
  color: hsl(var(--brand-60));
  text-decoration: none;
}
a:hover { text-decoration: underline; }

code, pre, kbd, samp {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-feature-settings: normal;
}

/* --- Header --- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid hsl(var(--border));
  background: hsl(var(--bg-0));
}

.brand {
  font-weight: 600;
  font-size: 16px;
  color: hsl(var(--fg-1));
}

.brand-sub {
  color: hsl(var(--fg-3));
  font-weight: 400;
  margin-left: 4px;
}

.menu-toggle {
  display: none;
  background: hsl(var(--bg-1));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius-md);
  padding: 6px 10px;
  color: hsl(var(--fg-1));
  cursor: pointer;
}

/* --- Layout: sidebar | main | toc --- */

.layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 760px) 200px;
  gap: 24px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px;
}

.sidebar {
  position: sticky;
  top: 56px;
  align-self: start;
  height: calc(100vh - 72px);
  overflow-y: auto;
  padding-right: 8px;
}

.nav-group { margin-bottom: 16px; }

.nav-group-title {
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: hsl(var(--fg-3));
  margin-bottom: 6px;
  font-weight: 600;
}

.nav ul { list-style: none; padding: 0; margin: 0; }
.nav li { padding: 3px 0; }
.nav li a { color: hsl(var(--fg-2)); display: block; padding: 2px 6px; border-radius: var(--radius-sm); }
.nav li a:hover { color: hsl(var(--fg-1)); background: hsl(var(--bg-1)); text-decoration: none; }
.nav li.active a { color: hsl(var(--brand-60)); background: hsl(var(--bg-1)); font-weight: 600; }

.main { min-width: 0; }

.page h1 { font-size: 28px; line-height: 36px; font-weight: 600; margin: 0 0 12px; }
.page h2 { font-size: 20px; line-height: 28px; font-weight: 600; margin: 28px 0 8px; }
.page h3 { font-size: 16px; line-height: 24px; font-weight: 600; margin: 20px 0 6px; }
.page h4 { font-size: 14px; line-height: 20px; font-weight: 600; margin: 16px 0 4px; }

.page p, .page ul, .page ol, .page blockquote, .page table, .page pre {
  margin: 0 0 12px;
}

.page ul, .page ol { padding-left: 20px; }
.page li { margin: 2px 0; }

.page blockquote {
  border-left: 3px solid hsl(var(--brand-60));
  background: hsl(var(--bg-1));
  padding: 8px 12px;
  color: hsl(var(--fg-2));
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.page code {
  background: hsl(var(--bg-2));
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
}

.page pre {
  background: hsl(var(--bg-2));
  border-radius: var(--radius-md);
  padding: 12px 14px;
  overflow-x: auto;
  border: 1px solid hsl(var(--border));
}

.page pre code {
  background: transparent;
  padding: 0;
  font-size: 12.5px;
  line-height: 18px;
}

.page table {
  border-collapse: collapse;
  width: 100%;
  font-size: 13px;
}
.page th, .page td {
  border-bottom: 1px solid hsl(var(--border));
  padding: 6px 10px;
  text-align: left;
  vertical-align: top;
}
.page th {
  background: hsl(var(--bg-1));
  font-weight: 600;
}

/* --- TOC --- */

.toc {
  position: sticky;
  top: 56px;
  align-self: start;
  font-size: 12.5px;
}
.toc-title {
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: hsl(var(--fg-3));
  font-weight: 600;
  margin-bottom: 6px;
}
.toc ul { list-style: none; padding: 0; margin: 0; }
.toc li { margin: 3px 0; }
.toc a { color: hsl(var(--fg-2)); }
.toc a:hover { color: hsl(var(--brand-60)); text-decoration: none; }

/* --- Index page --- */

.search {
  margin: 12px 0 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.search input[type=search] {
  flex: 1;
  max-width: 420px;
  padding: 8px 12px;
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius-md);
  background: hsl(var(--bg-1));
  color: hsl(var(--fg-1));
  font-size: 14px;
}
.search-hint { color: hsl(var(--fg-3)); font-size: 12px; }

ul.popular { list-style: none; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
ul.popular li a {
  display: block;
  padding: 12px 14px;
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius-md);
  background: hsl(var(--bg-1));
}
ul.popular li a:hover { border-color: hsl(var(--brand-60)); text-decoration: none; }
ul.popular .desc { display: block; color: hsl(var(--fg-2)); margin-top: 4px; font-weight: 400; font-size: 13px; }

/* --- Responsive --- */

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
    padding: 16px;
  }
  .toc { display: none; }
  .sidebar {
    position: fixed;
    top: 48px;
    left: 0;
    width: 260px;
    height: calc(100vh - 48px);
    background: hsl(var(--bg-0));
    border-right: 1px solid hsl(var(--border));
    padding: 16px;
    transform: translateX(-110%);
    transition: transform 150ms ease-out;
    z-index: 20;
  }
  .sidebar.open { transform: translateX(0); }
  .menu-toggle { display: inline-block; }
  ul.popular { grid-template-columns: 1fr; }
}