:root {
  color-scheme: light;
  --bg: #f7f8f5;
  --surface: #ffffff;
  --surface-raised: #fbfcf9;
  --sidebar: rgba(247, 248, 245, 0.92);
  --text: #172026;
  --muted: #5f6b70;
  --soft: #7b8784;
  --line: #dfe5df;
  --line-strong: #bdc9c0;
  --accent: #0f766e;
  --accent-2: #2563eb;
  --accent-3: #b45309;
  --accent-soft: #e5f3ef;
  --code: #eef3ef;
  --grid: rgba(15, 118, 110, 0.07);
  --shadow: 0 16px 42px rgba(23, 32, 38, 0.08);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1413;
  --surface: #151b1a;
  --surface-raised: #18201f;
  --sidebar: rgba(16, 23, 22, 0.94);
  --text: #edf2ef;
  --muted: #aab6b1;
  --soft: #87958f;
  --line: #2a3734;
  --line-strong: #45534f;
  --accent: #4db6ac;
  --accent-2: #8ab4f8;
  --accent-3: #f0b462;
  --accent-soft: #17312e;
  --code: #111917;
  --grid: rgba(77, 182, 172, 0.09);
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.34);
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  margin: 0;
  background:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    var(--bg);
  background-size: 28px 28px, 28px 28px, auto;
  color: var(--text);
  font: 16px/1.65 Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.app-shell {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 100vh;
}

.site-sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  gap: 28px;
  height: 100vh;
  padding: 28px 22px;
  border-right: 1px solid var(--line);
  background: var(--sidebar);
  backdrop-filter: blur(14px);
}

.brand {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
  color: var(--accent);
  font: 700 13px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  box-shadow: var(--shadow);
}

.brand strong {
  display: block;
  font-size: 18px;
  line-height: 1.1;
}

.brand small {
  display: block;
  margin-top: 4px;
  color: var(--soft);
  font-size: 12px;
  line-height: 1.25;
}

.site-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.site-nav a {
  display: flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.site-nav a:hover {
  border-color: var(--line);
  background: var(--surface-raised);
  color: var(--text);
}

.site-nav a[aria-current="page"] {
  border-color: color-mix(in srgb, var(--accent) 36%, var(--line));
  background: var(--accent-soft);
  color: var(--text);
  font-weight: 650;
}

.sidebar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
}

.language-link,
.theme-toggle {
  min-height: 36px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 13px;
  text-decoration: none;
}

.theme-toggle { cursor: pointer; }

.language-link:hover,
.theme-toggle:hover {
  border-color: var(--line-strong);
}

.site-main {
  min-width: 0;
}

.content {
  width: min(1040px, calc(100vw - 360px));
  margin: 0 auto;
  padding: 56px 48px 84px;
}

.content a {
  color: var(--accent);
  text-decoration-color: color-mix(in srgb, var(--accent) 35%, transparent);
  text-underline-offset: 0.18em;
}

.content a:hover { text-decoration-color: var(--accent); }

h1, h2, h3 { line-height: 1.15; }

h1 {
  max-width: 780px;
  margin: 0 0 18px;
  font-size: 52px;
  letter-spacing: 0;
}

h2 {
  margin: 52px 0 14px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 26px;
}

h3 {
  margin: 28px 0 10px;
  font-size: 19px;
}

p, li { color: var(--muted); }

p {
  max-width: 760px;
  margin: 0 0 16px;
}

strong { color: var(--text); }

ul {
  padding-left: 1.2rem;
}

li { margin: 6px 0; }

pre {
  overflow: auto;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--code);
}

code {
  border-radius: 4px;
  background: var(--code);
  padding: 0.1em 0.32em;
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

.mermaid {
  margin: 24px 0 32px;
  background:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    var(--surface);
  background-size: 22px 22px;
  box-shadow: var(--shadow);
}

body.is-home .content {
  width: min(1160px, calc(100vw - 340px));
  padding-top: 64px;
}

body.is-home h1 {
  max-width: 920px;
  font-size: 62px;
}

body.is-home .content > p:first-of-type {
  max-width: 820px;
  color: var(--text);
  font-size: 20px;
}

body.is-home .content > ul {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 22px 0 34px;
  padding: 0;
  list-style: none;
}

body.is-home .content > ul li {
  min-height: 118px;
  margin: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.source-docs {
  margin-top: 56px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-raised);
}

.source-docs h2 {
  margin: 0 0 8px;
  padding: 0;
  border: 0;
  font-size: 18px;
}

.source-docs ul {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.source-docs li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  margin: 0;
}

.source-docs span {
  color: var(--soft);
  font: 700 11px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  text-transform: uppercase;
}

.source-docs a {
  overflow-wrap: anywhere;
}

@media (max-width: 960px) {
  .app-shell {
    display: block;
  }

  .site-sidebar {
    position: relative;
    height: auto;
    gap: 18px;
    padding: 18px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .site-nav {
    flex-direction: row;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .site-nav a {
    flex: 0 0 auto;
    white-space: nowrap;
  }

  .sidebar-actions {
    margin-top: 0;
  }

  .content,
  body.is-home .content {
    width: min(100%, 760px);
    padding: 38px 20px 64px;
  }

  h1,
  body.is-home h1 {
    font-size: 40px;
  }

  body.is-home .content > ul {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .brand {
    grid-template-columns: 40px minmax(0, 1fr);
  }

  .brand-mark {
    width: 40px;
    height: 40px;
  }

  h1,
  body.is-home h1 {
    font-size: 34px;
  }
}