/* ==========================================================================
   llm.rb — Docs site
   ========================================================================== */

:root {
  --color-bg: #0d0d0d;
  --color-surface: #1a1a1a;
  --color-sidebar: #0a0a0a;
  --color-text: #e5e5e5;
  --color-text-secondary: #9ca3af;
  --color-text-muted: #555555;
  --color-accent: #22c55e;
  --color-accent-dim: rgba(34, 197, 94, 0.12);
  --color-accent-hover: #4ade80;
  --color-border: #2a2a2a;
  --color-code-bg: #0a0a0a;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "JetBrains Mono",
               "Cascadia Code", "Menlo", "Consolas", monospace;
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
             "Helvetica Neue", Arial, sans-serif;
  --sidebar-width: 220px;
  --content-width: 760px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-ui);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.7;
  display: flex;
  -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   Sidebar
   ========================================================================== */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-sidebar);
  border-right: 1px solid var(--color-border);
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  z-index: 10;
}

.sidebar-brand {
  padding: 0 20px 16px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: var(--color-accent);
  flex-shrink: 0;
}

.sidebar-title {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

.sidebar-nav {
  list-style: none;
  padding: 0 12px;
  flex: 1;
}

.sidebar-nav li { margin: 0; }

.sidebar-nav a {
  display: block;
  padding: 5px 8px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: all 0.15s ease;
}

.sidebar-nav a:hover { color: var(--color-text-secondary); }

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

/* Sidebar group labels */
.sidebar-nav li.group {
  padding: 12px 8px 4px;
  font-size: 10px;
  font-weight: 700;
  font-family: var(--font-ui);
  color: var(--color-text);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sidebar-footer {
  padding: 12px 20px 0;
  border-top: 1px solid var(--color-border);
  margin-top: 8px;
  display: flex;
  gap: 16px;
}

.sidebar-footer a {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  text-decoration: none;
}

.sidebar-footer a:hover { color: var(--color-accent); }

/* ==========================================================================
   Content
   ========================================================================== */

.content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-width: 0;
}

main {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 48px 32px 80px;
}

/* Section group headings in content */
main > strong {
  display: block;
  font-size: 12px;
  font-weight: 700;
  font-family: var(--font-ui);
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 24px 0 0;
  margin-bottom: -8px;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  text-align: center;
  padding: 60px 0 40px;
}

.hero .logo {
  width: 80px;
  height: 80px;
  border-radius: 12px;
  object-fit: cover;
  margin-bottom: 16px;
}

.hero h1 {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.hero .tagline {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 520px;
  margin: 0 auto 24px;
}

.hero .install {
  display: inline-block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text);
  text-decoration: none;
  transition: all 0.15s ease;
}

.hero .install:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.hero .badges {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.hero .badge {
  display: inline-block;
  background: var(--color-accent-dim);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 10px;
}

/* ==========================================================================
   Sections
   ========================================================================== */

section { padding: 32px 0; }
section + section { border-top: 1px solid var(--color-border); }

section h2 {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

section h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin: 24px 0 8px;
}

section p {
  color: var(--color-text-secondary);
  margin-bottom: 14px;
  line-height: 1.75;
}

section p:last-child { margin-bottom: 0; }

section ul, section ol {
  margin: 0 0 14px 20px;
  color: var(--color-text-secondary);
}

section li { margin-bottom: 4px; }

section a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

section a:hover { color: var(--color-accent-hover); }

/* Inline code */
section code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #f472b6;
  background: var(--color-code-bg);
  padding: 1px 5px;
  border: 1px solid var(--color-border);
  border-radius: 3px;
}

/* Code blocks — Prism handles border/background */
section pre { margin: 16px 0; overflow-x: auto; }

/* Reset inline code styling on code inside pre blocks */
section pre code {
  border: none;
  background: none;
  padding: 0;
}

section hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 24px 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */

footer {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  text-align: center;
}

footer a {
  color: var(--color-text-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-size: 13px;
}

footer a:hover { color: var(--color-accent); }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
  .sidebar { display: none; }
  .content { margin-left: 0; }
  main { padding: 24px 16px 40px; }
  .hero { padding: 40px 0 24px; }
  .hero h1 { font-size: 22px; }
}