:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f6f8f7;
  --color-fg: #1c1e21;
  --color-fg-muted: #4a4f55;
  --color-border: #e3e6e8;
  --color-primary: #1e6f5c;
  --color-primary-strong: #164f42;
  --color-code-bg: #f0f2f1;
  --sidebar-width: 260px;
  --header-height: 60px;

  /* Syntax highlighting (highlight.js token classes, see markdown.mjs) */
  --hljs-comment: #6b7280;
  --hljs-string: #1e7a34;
  --hljs-number: #b45309;
  --hljs-keyword: #a626a4;
  --hljs-built-in: #0550ae;
  --hljs-variable: #c2410c;
  --hljs-section: #1e6f5c;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #17191a;
    --color-bg-alt: #1e2123;
    --color-fg: #e6e8ea;
    --color-fg-muted: #a9afb5;
    --color-border: #33383c;
    --color-primary: #3ecfaa;
    --color-primary-strong: #6fe0c3;
    --color-code-bg: #232727;

    --hljs-comment: #7f868e;
    --hljs-string: #98c379;
    --hljs-number: #d19a66;
    --hljs-keyword: #c678dd;
    --hljs-built-in: #61afef;
    --hljs-variable: #e5964f;
    --hljs-section: #3ecfaa;
  }
}

/* Manual override via the header's theme switcher (localStorage-backed),
   wins over prefers-color-scheme in both directions. */
:root[data-theme="dark"] {
  --color-bg: #17191a;
  --color-bg-alt: #1e2123;
  --color-fg: #e6e8ea;
  --color-fg-muted: #a9afb5;
  --color-border: #33383c;
  --color-primary: #3ecfaa;
  --color-primary-strong: #6fe0c3;
  --color-code-bg: #232727;

  --hljs-comment: #7f868e;
  --hljs-string: #98c379;
  --hljs-number: #d19a66;
  --hljs-keyword: #c678dd;
  --hljs-built-in: #61afef;
  --hljs-variable: #e5964f;
  --hljs-section: #3ecfaa;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--color-bg);
  color: var(--color-fg);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

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

code, pre, kbd {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.92em;
}

code {
  background: var(--color-code-bg);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

pre {
  background: var(--color-code-bg);
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
}
pre code {
  background: none;
  padding: 0;
}

.hljs-comment, .hljs-quote {
  color: var(--hljs-comment);
  font-style: italic;
}
.hljs-string, .hljs-literal, .hljs-regexp, .hljs-addition {
  color: var(--hljs-string);
}
.hljs-number {
  color: var(--hljs-number);
}
.hljs-keyword, .hljs-selector-tag {
  color: var(--hljs-keyword);
}
.hljs-built_in, .hljs-title.function_, .hljs-title.class_, .hljs-attr {
  color: var(--hljs-built-in);
}
.hljs-variable {
  color: var(--hljs-variable);
}
.hljs-params, .hljs-meta {
  color: var(--hljs-comment);
}
.hljs-section, .hljs-title {
  color: var(--hljs-section);
  font-weight: 600;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
}
th, td {
  border: 1px solid var(--color-border);
  padding: 0.5rem 0.75rem;
  text-align: left;
}
th {
  background: var(--color-bg-alt);
}

/* Site header */
.site-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 10;
}
.site-header .brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.site-header .brand img {
  height: 28px;
  width: auto;
}
.site-header .brand img.logo-dark {
  display: none;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .site-header .brand img.logo-light {
    display: none;
  }
  :root:not([data-theme="light"]) .site-header .brand img.logo-dark {
    display: inline;
  }
}
:root[data-theme="dark"] .site-header .brand img.logo-light {
  display: none;
}
:root[data-theme="dark"] .site-header .brand img.logo-dark {
  display: inline;
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}
.site-header nav a {
  color: var(--color-fg);
  font-weight: 500;
}
.version-select,
.theme-select {
  background: var(--color-bg-alt);
  color: var(--color-fg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0.3rem 0.5rem;
  font-size: 0.85rem;
}

/* Docs layout */
.docs-layout {
  display: flex;
  max-width: 1200px;
  margin: 0 auto;
}
.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  padding: 1.5rem 1rem;
  border-right: 1px solid var(--color-border);
  height: calc(100vh - var(--header-height));
  position: sticky;
  top: var(--header-height);
  overflow-y: auto;
}
.sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.sidebar li {
  margin: 0.15rem 0;
}
.sidebar .category-label {
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-fg-muted);
  margin: 1rem 0 0.4rem;
}
.sidebar a {
  display: block;
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  color: var(--color-fg-muted);
}
.sidebar a:hover {
  background: var(--color-bg-alt);
  text-decoration: none;
}
.sidebar a.active {
  background: var(--color-bg-alt);
  color: var(--color-primary);
  font-weight: 600;
}
.doc-content {
  flex: 1;
  min-width: 0;
  padding: 2rem 2.5rem 4rem;
}
.doc-content h1:first-child {
  margin-top: 0;
}

/* Home page */
.hero {
  text-align: center;
  padding: 5rem 1.5rem;
  background: linear-gradient(180deg, var(--color-bg-alt), var(--color-bg));
}
.hero h1 {
  font-size: 3rem;
  margin: 0 0 0.5rem;
}
.hero p {
  font-size: 1.25rem;
  color: var(--color-fg-muted);
  margin: 0 0 2rem;
}
.hero .cta {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  font-weight: 600;
}
.hero .cta:hover {
  background: var(--color-primary-strong);
  text-decoration: none;
}
.features {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
@media (max-width: 800px) {
  .features {
    grid-template-columns: 1fr;
  }
  .docs-layout {
    flex-direction: column;
  }
  .sidebar {
    width: auto;
    height: auto;
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
}
.feature-card {
  border-left: 3px solid var(--color-primary);
  padding: 0.25rem 1.25rem;
}
.feature-card h3 {
  margin-top: 0;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--color-fg-muted);
  font-size: 0.9rem;
}