/* Shared chrome + tokens for Vibe Coding Handbook resource pages
   Keep in sync with deploy/index.html theme. */
:root {
  --bg: #faf9f7;
  --surface: #ffffff;
  --card: #ffffff;
  --text: #1a1a1a;
  --ink: #1a1a1a;
  --fg: #1a1a1a;
  --text-muted: #5c5c5c;
  --muted: #5c5c5c;
  --border: #e8e4df;
  --accent: #2563eb;
  --accent-soft: #eff6ff;
  --code-bg: #f4f1ec;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.08);
  /* semantic accents used by resource pages */
  --green: #15803d;
  --yellow: #a16207;
  --red: #b91c1c;
  --purple: #7c3aed;
  --teal: #0f766e;
  --orange: #c2410c;
  --blue: #2563eb;
  --pink: #be185d;
  --accent-2: #0f766e;
  --oat: #e8e4df;
  --oat-soft: rgba(232, 228, 223, 0.45);
  --green-soft: rgba(15, 118, 110, 0.12);
  --serif: Inter, system-ui, sans-serif;
  --sans: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "Cascadia Mono", ui-monospace, monospace;
}

[data-theme="dark"],
html.dark {
  --bg: #111111;
  --surface: #1a1a1a;
  --card: #1a1a1a;
  --text: #ededed;
  --ink: #ededed;
  --fg: #ededed;
  --text-muted: #a3a3a3;
  --muted: #a3a3a3;
  --border: #2e2e2e;
  --accent: #60a5fa;
  --accent-soft: #1e293b;
  --code-bg: #262626;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.35);
  --green: #4ade80;
  --yellow: #fbbf24;
  --red: #f87171;
  --purple: #c4b5fd;
  --teal: #5eead4;
  --orange: #fb923c;
  --blue: #60a5fa;
  --pink: #f9a8d4;
  --accent-2: #5eead4;
  --oat: #2e2e2e;
  --oat-soft: rgba(46, 46, 46, 0.5);
  --green-soft: rgba(94, 234, 212, 0.12);
}

/* Site nav: fixed top on every page (Guide + resources) */
:root {
  --site-nav-h: 48px;
}
.vibe-site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10050;
  min-height: var(--site-nav-h);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
  padding: 0.45rem 1rem;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  font-family: Inter, system-ui, sans-serif;
  box-sizing: border-box;
}
/* Spacer so page content starts below fixed nav (resources that don't pad themselves) */
body.has-vibe-nav {
  padding-top: var(--site-nav-h);
}
.vibe-site-nav .brand {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  margin-right: 0.35rem;
  white-space: nowrap;
}
.vibe-site-nav .brand:hover {
  color: var(--accent);
}
.vibe-site-nav .nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  align-items: center;
}
.vibe-site-nav a.nav-link {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  padding: 0.3rem 0.65rem;
  border-radius: 8px;
  border: 1px solid transparent;
}
.vibe-site-nav a.nav-link:hover {
  color: var(--accent);
  background: var(--accent-soft);
}
.vibe-site-nav a.nav-link.active {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
  font-weight: 600;
}
.vibe-site-nav .nav-spacer {
  flex: 1;
  min-width: 0.5rem;
}
.vibe-site-nav .nav-theme {
  font: inherit;
  font-size: 0.75rem;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}
.vibe-site-nav .nav-theme:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Resource hub cards */
.resource-hub {
  max-width: 920px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
  font-family: Inter, system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}
.resource-hub h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}
.resource-hub .lede {
  color: var(--muted);
  margin: 0 0 1.75rem;
  line-height: 1.6;
}
.resource-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.resource-card {
  display: block;
  padding: 1.25rem 1.35rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.resource-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
}
.resource-card h2 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.4rem;
  color: var(--accent);
}
.resource-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.5;
}
.resource-card .tag {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--teal, var(--accent));
}