/* Oversight Protocol — Site Stylesheet */

:root {
  --bg-primary: #0e1116;
  --bg-secondary: #161b22;
  --bg-tertiary: #0d1117;
  --border: #30363d;
  --border-light: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #656d76;
  --accent-blue: #58a6ff;
  --accent-blue-dim: #1f6feb;
  --accent-green: #3fb950;
  --accent-red: #f85149;
  --accent-orange: #f0883e;
  --accent-purple: #bc8cff;
  --font-sans: "Inter", -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  --max-width: 960px;
  --max-width-wide: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

/* ---- Navigation ---- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14, 17, 22, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}

.nav-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-brand span { color: var(--accent-blue); }

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.15s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--text-primary); }

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  padding: 8px 6px;
  margin: 0;
}

.nav-mobile-toggle:hover { color: var(--text-primary); }

/* ---- Layout ---- */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.container-wide {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 24px;
}

.page-header {
  padding: 64px 0 32px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}

.page-header h1 {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
  color: var(--text-primary);
}

.page-header .subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

main { padding-bottom: 80px; }

/* ---- Typography ---- */

h1, h2, h3, h4 {
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.3;
}

h1 { font-size: 36px; font-weight: 700; }
h2 { font-size: 26px; font-weight: 600; margin-top: 48px; }
h3 { font-size: 20px; font-weight: 600; margin-top: 32px; }

p { margin: 16px 0; }

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

strong { font-weight: 600; }

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
}

pre {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 16px 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  margin: 24px 0;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
}

blockquote {
  border-left: 3px solid var(--accent-blue-dim);
  margin: 24px 0;
  padding: 4px 0 4px 20px;
  color: var(--text-secondary);
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 48px 0;
}

/* ---- Tables ---- */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}

th, td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ---- Cards ---- */

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  margin: 16px 0;
}

.card h3 { margin-top: 0; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 24px 0;
}

.card-grid .card { margin: 0; }

/* ---- Hero ---- */

.hero {
  padding: 80px 0 64px;
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 16px;
}

.hero h1 span { color: var(--accent-blue); }

.hero .lead {
  font-size: 20px;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Buttons ---- */

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--accent-blue-dim);
  color: #fff;
}
.btn-primary:hover { background: #2d7de0; }

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: #1c2129; border-color: #484f58; }

/* ---- Feature blocks ---- */

.features {
  padding: 48px 0;
}

.feature-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  margin: 32px 0;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.feature-item h3 { margin: 0 0 4px; font-size: 18px; }
.feature-item p { margin: 4px 0 0; color: var(--text-secondary); font-size: 15px; }

/* ---- Status badges ---- */

.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-green { background: rgba(63, 185, 80, 0.15); color: var(--accent-green); }
.badge-blue { background: rgba(31, 111, 235, 0.15); color: var(--accent-blue); }
.badge-orange { background: rgba(240, 136, 62, 0.15); color: var(--accent-orange); }

/* ---- Blog ---- */

.blog-list { list-style: none; padding: 0; }

.blog-entry {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.blog-entry:first-child { padding-top: 0; }

.blog-date {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 4px;
}

.blog-entry h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.blog-entry h2 a {
  color: var(--text-primary);
  text-decoration: none;
}

.blog-entry h2 a:hover { color: var(--accent-blue); }

.blog-entry .excerpt {
  color: var(--text-secondary);
  margin: 0;
  font-size: 15px;
}

.blog-post-header {
  padding: 64px 0 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}

.blog-post-header h1 { font-size: 32px; margin-bottom: 8px; }

.blog-post-meta {
  font-size: 14px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.blog-content { font-size: 17px; line-height: 1.8; }
.blog-content h2 { margin-top: 40px; }
.blog-content img { max-width: 100%; border-radius: 8px; margin: 24px 0; }

/* ---- Docs sidebar ---- */

.docs-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  padding-top: 32px;
}

.docs-sidebar {
  position: sticky;
  top: 80px;
  align-self: start;
}

.docs-sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.docs-sidebar li { margin: 2px 0; }

.docs-sidebar a {
  display: block;
  padding: 6px 12px;
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 14px;
  text-decoration: none;
}

.docs-sidebar a:hover { color: var(--text-primary); background: var(--bg-secondary); }
.docs-sidebar a.active { color: var(--accent-blue); background: rgba(31, 111, 235, 0.08); }

.docs-sidebar h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin: 16px 0 4px 12px;
}

.docs-sidebar h4:first-child { margin-top: 0; }

/* ---- Section dividers ---- */

.section-heading {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin: 48px 0 24px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

/* ---- Stat counters ---- */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin: 32px 0;
}

.stat {
  text-align: center;
  padding: 20px;
}

.stat-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent-blue);
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 4px;
}

/* ---- Footer ---- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  margin-top: 80px;
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
}

.site-footer a { color: var(--text-secondary); }

/* ---- Responsive ---- */

@media (max-width: 768px) {
  .hero h1 { font-size: 32px; }
  .hero .lead { font-size: 17px; }
  .page-header h1 { font-size: 28px; }
  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar { position: static; }
  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 12px;
    z-index: 99;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  }
  .nav-links.open li { list-style: none; }
  .nav-links.open a { font-size: 16px; padding: 6px 0; display: block; }
  .card-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

/* ---- Diagram / Architecture blocks ---- */

.arch-flow {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin: 24px 0;
  font-family: var(--font-mono);
  font-size: 14px;
}

.arch-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 14px;
  white-space: nowrap;
}

.arch-arrow { color: var(--text-muted); }

/* ---- Print ---- */

@media print {
  .site-nav, .site-footer { display: none; }
  body { background: #fff; color: #111; font-size: 12pt; }
  a { color: #111; }
  pre { border: 1px solid #ccc; }
  .hero { padding: 24px 0; }
}