* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #fafafa;
  --fg: #1a1a1a;
  --sidebar-bg: #f0f0f0;
  --sidebar-w: 280px;
  --accent: #2563eb;
  --border: #ddd;
  --code-bg: #f6f8fa;
  --code-fg: #24292e;
}

[data-theme="dark"] {
  --bg: #1a1a2e;
  --fg: #e0e0e0;
  --sidebar-bg: #16213e;
  --accent: #60a5fa;
  --border: #333;
  --code-bg: #0d1117;
  --code-fg: #e0e0e0;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1a1a2e;
    --fg: #e0e0e0;
    --sidebar-bg: #16213e;
    --accent: #60a5fa;
    --border: #333;
    --code-bg: #0d1117;
    --code-fg: #e0e0e0;
  }
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  overflow-y: auto;
}

.sidebar-header {
  padding: 1.5em 1em 1em;
  border-bottom: 1px solid var(--border);
}

.site-title {
  display: block;
  font-size: 1.2em;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
  margin-bottom: 0.8em;
}

.search-form input {
  width: 100%;
  padding: 0.4em 0.6em;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--fg);
  font-size: 0.9em;
}

.sidebar-nav {
  flex: 1;
  padding: 1em 0;
  overflow-y: auto;
}

.nav-section {
  margin-bottom: 1em;
}

.nav-heading {
  display: block;
  padding: 0.3em 1em;
  font-size: 0.75em;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--fg);
  opacity: 0.6;
}

.sidebar-nav ul {
  list-style: none;
}

.sidebar-nav li a {
  display: block;
  padding: 0.3em 1em 0.3em 1.5em;
  color: var(--fg);
  text-decoration: none;
  font-size: 0.9em;
  border-left: 3px solid transparent;
}

.sidebar-nav li a:hover {
  background: var(--bg);
}

.sidebar-nav li.active a {
  border-left-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.sidebar-controls {
  padding: 0.8em 1em;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 0.6em;
}

.sidebar-controls > div {
  flex: 1;
}

.sidebar-controls label {
  display: block;
  font-size: 0.75em;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.6;
  margin-bottom: 0.4em;
}

.sidebar-controls select {
  width: 100%;
  padding: 0.4em 0.6em;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--fg);
  font-size: 0.85em;
}

.platform-notice {
  padding: 1em;
  border: 1px dashed var(--border);
  border-radius: 6px;
  opacity: 0.6;
  font-style: italic;
  margin: 1em 0;
}

.sidebar-footer {
  padding: 1em;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 1em;
  font-size: 0.85em;
}

.sidebar-footer a {
  color: var(--accent);
  text-decoration: none;
}

.content {
  flex: 1;
  margin-left: var(--sidebar-w);
  padding: 2em 3em;
  max-width: 900px;
}

.content h1 { font-size: 2em; margin: 0.5em 0; border-bottom: 2px solid var(--border); padding-bottom: 0.3em; }
.content h2 { font-size: 1.5em; margin: 1.5em 0 0.5em; border-bottom: 1px solid var(--border); padding-bottom: 0.2em; }
.content h3 { font-size: 1.2em; margin: 1.2em 0 0.4em; }
.content p { margin: 0.8em 0; }
.content ul, .content ol { margin: 0.8em 0; padding-left: 2em; }
.content li { margin: 0.3em 0; }
.content blockquote { border-left: 3px solid var(--border); padding-left: 1em; margin: 0.8em 0; opacity: 0.8; }

.content pre {
  background: var(--code-bg);
  color: var(--code-fg);
  padding: 1em;
  border-radius: 6px;
  border: 1px solid var(--border);
  overflow-x: auto;
  margin: 1em 0;
  font-size: 0.9em;
}

.content code {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.9em;
}

.content p code, .content li code, .content td code {
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

.content table {
  border-collapse: collapse;
  margin: 1em 0;
  width: 100%;
}

.content th, .content td {
  border: 1px solid var(--border);
  padding: 0.5em 0.8em;
  text-align: left;
}

.content th {
  background: var(--sidebar-bg);
  font-weight: 600;
}

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

.page-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 3em;
  padding-top: 1.5em;
  border-top: 1px solid var(--border);
}

.page-nav a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.95em;
}

.page-nav .next { margin-left: auto; }

.search-results { list-style: none; padding: 0; }
.search-results li { margin: 1.5em 0; }
.search-results a { font-size: 1.1em; font-weight: 600; }
.search-results .snippet { margin-top: 0.3em; color: var(--fg); opacity: 0.7; font-size: 0.9em; }

@media (max-width: 768px) {
  .sidebar { position: static; width: 100%; border-right: none; border-bottom: 1px solid var(--border); }
  .content { margin-left: 0; padding: 1.5em; }
  .layout { flex-direction: column; }
}

/* ------------------------------------------------------------------ */
/* Syntax highlighting — light theme (github)                         */
/* ------------------------------------------------------------------ */
.hl-chroma { background-color: transparent; }
.hl-chroma .hl-err { color: #a61717; background-color: #e3d2d2 }
.hl-chroma .hl-k { color: #0550ae; font-weight: bold }
.hl-chroma .hl-kc { color: #0550ae; font-weight: bold }
.hl-chroma .hl-kd { color: #0550ae; font-weight: bold }
.hl-chroma .hl-kn { color: #0550ae; font-weight: bold }
.hl-chroma .hl-kp { color: #0550ae; font-weight: bold }
.hl-chroma .hl-kr { color: #0550ae; font-weight: bold }
.hl-chroma .hl-kt { color: #445588; font-weight: bold }
.hl-chroma .hl-na { color: #008080 }
.hl-chroma .hl-nb { color: #0086b3 }
.hl-chroma .hl-bp { color: #999999 }
.hl-chroma .hl-nc { color: #445588; font-weight: bold }
.hl-chroma .hl-no { color: #008080 }
.hl-chroma .hl-nd { color: #3c5d5d; font-weight: bold }
.hl-chroma .hl-ni { color: #800080 }
.hl-chroma .hl-ne { color: #990000; font-weight: bold }
.hl-chroma .hl-nf { color: #6f42c1 }
.hl-chroma .hl-nl { color: #990000; font-weight: bold }
.hl-chroma .hl-nn { color: #555555 }
.hl-chroma .hl-nt { color: #22863a }
.hl-chroma .hl-nv { color: #008080 }
.hl-chroma .hl-vc { color: #008080 }
.hl-chroma .hl-vg { color: #008080 }
.hl-chroma .hl-vi { color: #008080 }
.hl-chroma .hl-s { color: #032f62 }
.hl-chroma .hl-sa { color: #032f62 }
.hl-chroma .hl-sb { color: #032f62 }
.hl-chroma .hl-sc { color: #032f62 }
.hl-chroma .hl-dl { color: #032f62 }
.hl-chroma .hl-sd { color: #032f62 }
.hl-chroma .hl-s2 { color: #032f62 }
.hl-chroma .hl-se { color: #032f62 }
.hl-chroma .hl-sh { color: #032f62 }
.hl-chroma .hl-si { color: #032f62 }
.hl-chroma .hl-sx { color: #032f62 }
.hl-chroma .hl-sr { color: #009926 }
.hl-chroma .hl-s1 { color: #032f62 }
.hl-chroma .hl-ss { color: #990073 }
.hl-chroma .hl-m { color: #005cc5 }
.hl-chroma .hl-mb { color: #005cc5 }
.hl-chroma .hl-mf { color: #005cc5 }
.hl-chroma .hl-mh { color: #005cc5 }
.hl-chroma .hl-mi { color: #005cc5 }
.hl-chroma .hl-il { color: #005cc5 }
.hl-chroma .hl-mo { color: #005cc5 }
.hl-chroma .hl-o { color: #d73a49 }
.hl-chroma .hl-ow { color: #d73a49 }
.hl-chroma .hl-c { color: #6a737d; font-style: italic }
.hl-chroma .hl-ch { color: #6a737d; font-style: italic }
.hl-chroma .hl-cm { color: #6a737d; font-style: italic }
.hl-chroma .hl-c1 { color: #6a737d; font-style: italic }
.hl-chroma .hl-cs { color: #6a737d; font-weight: bold; font-style: italic }
.hl-chroma .hl-cp { color: #6a737d; font-weight: bold; font-style: italic }
.hl-chroma .hl-cpf { color: #6a737d; font-weight: bold; font-style: italic }
.hl-chroma .hl-gd { color: #b31d28; background-color: #ffeef0 }
.hl-chroma .hl-gi { color: #22863a; background-color: #f0fff4 }
.hl-chroma .hl-ge { font-style: italic }
.hl-chroma .hl-gs { font-weight: bold }
.hl-chroma .hl-gh { color: #999999 }
.hl-chroma .hl-gu { color: #aaaaaa }

/* ------------------------------------------------------------------ */
/* Syntax highlighting — dark theme (monokai)                         */
/* ------------------------------------------------------------------ */
[data-theme="dark"] .hl-chroma .hl-err { color: #960050; background-color: #1e0010 }
[data-theme="dark"] .hl-chroma .hl-k { color: #66d9ef; font-weight: normal }
[data-theme="dark"] .hl-chroma .hl-kc { color: #66d9ef; font-weight: normal }
[data-theme="dark"] .hl-chroma .hl-kd { color: #66d9ef; font-weight: normal }
[data-theme="dark"] .hl-chroma .hl-kn { color: #f92672; font-weight: normal }
[data-theme="dark"] .hl-chroma .hl-kp { color: #66d9ef; font-weight: normal }
[data-theme="dark"] .hl-chroma .hl-kr { color: #66d9ef; font-weight: normal }
[data-theme="dark"] .hl-chroma .hl-kt { color: #66d9ef; font-weight: normal }
[data-theme="dark"] .hl-chroma .hl-na { color: #a6e22e }
[data-theme="dark"] .hl-chroma .hl-nb { color: #f8f8f2 }
[data-theme="dark"] .hl-chroma .hl-bp { color: #f8f8f2 }
[data-theme="dark"] .hl-chroma .hl-nc { color: #a6e22e; font-weight: normal }
[data-theme="dark"] .hl-chroma .hl-no { color: #66d9ef }
[data-theme="dark"] .hl-chroma .hl-nd { color: #a6e22e; font-weight: normal }
[data-theme="dark"] .hl-chroma .hl-ni { color: #f8f8f2 }
[data-theme="dark"] .hl-chroma .hl-ne { color: #a6e22e; font-weight: normal }
[data-theme="dark"] .hl-chroma .hl-nf { color: #a6e22e }
[data-theme="dark"] .hl-chroma .hl-nl { color: #f8f8f2 }
[data-theme="dark"] .hl-chroma .hl-nn { color: #f8f8f2 }
[data-theme="dark"] .hl-chroma .hl-nt { color: #f92672 }
[data-theme="dark"] .hl-chroma .hl-nv { color: #f8f8f2 }
[data-theme="dark"] .hl-chroma .hl-vc { color: #f8f8f2 }
[data-theme="dark"] .hl-chroma .hl-vg { color: #f8f8f2 }
[data-theme="dark"] .hl-chroma .hl-vi { color: #f8f8f2 }
[data-theme="dark"] .hl-chroma .hl-s { color: #e6db74 }
[data-theme="dark"] .hl-chroma .hl-sa { color: #e6db74 }
[data-theme="dark"] .hl-chroma .hl-sb { color: #e6db74 }
[data-theme="dark"] .hl-chroma .hl-sc { color: #e6db74 }
[data-theme="dark"] .hl-chroma .hl-dl { color: #e6db74 }
[data-theme="dark"] .hl-chroma .hl-sd { color: #e6db74 }
[data-theme="dark"] .hl-chroma .hl-s2 { color: #e6db74 }
[data-theme="dark"] .hl-chroma .hl-se { color: #ae81ff }
[data-theme="dark"] .hl-chroma .hl-sh { color: #e6db74 }
[data-theme="dark"] .hl-chroma .hl-si { color: #e6db74 }
[data-theme="dark"] .hl-chroma .hl-sx { color: #e6db74 }
[data-theme="dark"] .hl-chroma .hl-sr { color: #e6db74 }
[data-theme="dark"] .hl-chroma .hl-s1 { color: #e6db74 }
[data-theme="dark"] .hl-chroma .hl-ss { color: #e6db74 }
[data-theme="dark"] .hl-chroma .hl-m { color: #ae81ff }
[data-theme="dark"] .hl-chroma .hl-mb { color: #ae81ff }
[data-theme="dark"] .hl-chroma .hl-mf { color: #ae81ff }
[data-theme="dark"] .hl-chroma .hl-mh { color: #ae81ff }
[data-theme="dark"] .hl-chroma .hl-mi { color: #ae81ff }
[data-theme="dark"] .hl-chroma .hl-il { color: #ae81ff }
[data-theme="dark"] .hl-chroma .hl-mo { color: #ae81ff }
[data-theme="dark"] .hl-chroma .hl-o { color: #f92672; font-weight: normal }
[data-theme="dark"] .hl-chroma .hl-ow { color: #f92672; font-weight: normal }
[data-theme="dark"] .hl-chroma .hl-c { color: #75715e; font-style: italic }
[data-theme="dark"] .hl-chroma .hl-ch { color: #75715e; font-style: italic }
[data-theme="dark"] .hl-chroma .hl-cm { color: #75715e; font-style: italic }
[data-theme="dark"] .hl-chroma .hl-c1 { color: #75715e; font-style: italic }
[data-theme="dark"] .hl-chroma .hl-cs { color: #75715e; font-style: italic }
[data-theme="dark"] .hl-chroma .hl-cp { color: #75715e; font-style: italic }
[data-theme="dark"] .hl-chroma .hl-cpf { color: #75715e; font-style: italic }
[data-theme="dark"] .hl-chroma .hl-gd { color: #f92672 }
[data-theme="dark"] .hl-chroma .hl-gi { color: #a6e22e }
[data-theme="dark"] .hl-chroma .hl-ge { font-style: italic }
[data-theme="dark"] .hl-chroma .hl-gs { font-weight: bold }
[data-theme="dark"] .hl-chroma .hl-gh { color: #75715e }
[data-theme="dark"] .hl-chroma .hl-gu { color: #75715e }

/* Dark syntax when auto-detected via media query */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hl-chroma .hl-err { color: #960050; background-color: #1e0010 }
  :root:not([data-theme="light"]) .hl-chroma .hl-k { color: #66d9ef; font-weight: normal }
  :root:not([data-theme="light"]) .hl-chroma .hl-kc { color: #66d9ef; font-weight: normal }
  :root:not([data-theme="light"]) .hl-chroma .hl-kd { color: #66d9ef; font-weight: normal }
  :root:not([data-theme="light"]) .hl-chroma .hl-kn { color: #f92672; font-weight: normal }
  :root:not([data-theme="light"]) .hl-chroma .hl-kp { color: #66d9ef; font-weight: normal }
  :root:not([data-theme="light"]) .hl-chroma .hl-kr { color: #66d9ef; font-weight: normal }
  :root:not([data-theme="light"]) .hl-chroma .hl-kt { color: #66d9ef; font-weight: normal }
  :root:not([data-theme="light"]) .hl-chroma .hl-na { color: #a6e22e }
  :root:not([data-theme="light"]) .hl-chroma .hl-nb { color: #f8f8f2 }
  :root:not([data-theme="light"]) .hl-chroma .hl-bp { color: #f8f8f2 }
  :root:not([data-theme="light"]) .hl-chroma .hl-nc { color: #a6e22e; font-weight: normal }
  :root:not([data-theme="light"]) .hl-chroma .hl-no { color: #66d9ef }
  :root:not([data-theme="light"]) .hl-chroma .hl-nd { color: #a6e22e; font-weight: normal }
  :root:not([data-theme="light"]) .hl-chroma .hl-ne { color: #a6e22e; font-weight: normal }
  :root:not([data-theme="light"]) .hl-chroma .hl-nf { color: #a6e22e }
  :root:not([data-theme="light"]) .hl-chroma .hl-nn { color: #f8f8f2 }
  :root:not([data-theme="light"]) .hl-chroma .hl-nt { color: #f92672 }
  :root:not([data-theme="light"]) .hl-chroma .hl-nv { color: #f8f8f2 }
  :root:not([data-theme="light"]) .hl-chroma .hl-s { color: #e6db74 }
  :root:not([data-theme="light"]) .hl-chroma .hl-sa { color: #e6db74 }
  :root:not([data-theme="light"]) .hl-chroma .hl-sb { color: #e6db74 }
  :root:not([data-theme="light"]) .hl-chroma .hl-sc { color: #e6db74 }
  :root:not([data-theme="light"]) .hl-chroma .hl-dl { color: #e6db74 }
  :root:not([data-theme="light"]) .hl-chroma .hl-sd { color: #e6db74 }
  :root:not([data-theme="light"]) .hl-chroma .hl-s2 { color: #e6db74 }
  :root:not([data-theme="light"]) .hl-chroma .hl-se { color: #ae81ff }
  :root:not([data-theme="light"]) .hl-chroma .hl-sh { color: #e6db74 }
  :root:not([data-theme="light"]) .hl-chroma .hl-si { color: #e6db74 }
  :root:not([data-theme="light"]) .hl-chroma .hl-sx { color: #e6db74 }
  :root:not([data-theme="light"]) .hl-chroma .hl-sr { color: #e6db74 }
  :root:not([data-theme="light"]) .hl-chroma .hl-s1 { color: #e6db74 }
  :root:not([data-theme="light"]) .hl-chroma .hl-ss { color: #e6db74 }
  :root:not([data-theme="light"]) .hl-chroma .hl-m { color: #ae81ff }
  :root:not([data-theme="light"]) .hl-chroma .hl-mb { color: #ae81ff }
  :root:not([data-theme="light"]) .hl-chroma .hl-mf { color: #ae81ff }
  :root:not([data-theme="light"]) .hl-chroma .hl-mh { color: #ae81ff }
  :root:not([data-theme="light"]) .hl-chroma .hl-mi { color: #ae81ff }
  :root:not([data-theme="light"]) .hl-chroma .hl-il { color: #ae81ff }
  :root:not([data-theme="light"]) .hl-chroma .hl-mo { color: #ae81ff }
  :root:not([data-theme="light"]) .hl-chroma .hl-o { color: #f92672; font-weight: normal }
  :root:not([data-theme="light"]) .hl-chroma .hl-ow { color: #f92672; font-weight: normal }
  :root:not([data-theme="light"]) .hl-chroma .hl-c { color: #75715e; font-style: italic }
  :root:not([data-theme="light"]) .hl-chroma .hl-ch { color: #75715e; font-style: italic }
  :root:not([data-theme="light"]) .hl-chroma .hl-cm { color: #75715e; font-style: italic }
  :root:not([data-theme="light"]) .hl-chroma .hl-c1 { color: #75715e; font-style: italic }
  :root:not([data-theme="light"]) .hl-chroma .hl-cs { color: #75715e; font-style: italic }
  :root:not([data-theme="light"]) .hl-chroma .hl-cp { color: #75715e; font-style: italic }
  :root:not([data-theme="light"]) .hl-chroma .hl-cpf { color: #75715e; font-style: italic }
  :root:not([data-theme="light"]) .hl-chroma .hl-gd { color: #f92672 }
  :root:not([data-theme="light"]) .hl-chroma .hl-gi { color: #a6e22e }
}