/* ============================================
   Shared Layout — Vanilla Mockups
   ============================================ */

/* Dark theme base */
:root {
  --page-bg: #0a0a0a;
  --page-fg: #f0f0f0;
  --page-muted: #999;
  --page-accent: #00ff88;
  --page-border: #333;
  --page-surface: #141414;
  --page-code-bg: #1a1a1a;

  /* Depth tokens for nested demos */
  --depth-1-bg: #161616;
  --depth-2-bg: #1c1c1c;
  --depth-3-bg: #222;
}

/* Light theme override */
html.light {
  --page-bg: #fafafa;
  --page-fg: #111;
  --page-muted: #666;
  --page-accent: #059669;
  --page-border: #e0e0e0;
  --page-surface: #fff;
  --page-code-bg: #f0f0f0;

  --depth-1-bg: #f5f5f5;
  --depth-2-bg: #ebebeb;
  --depth-3-bg: #e0e0e0;

  /* Override core tokens for light mode */
  --disclosure-indicator-color: #999;
  --disclosure-indicator-color-open: #059669;
  --disclosure-panel-bg: #fff;
  --disclosure-panel-bg-open: #f9fafb;
  --disclosure-panel-border: #e0e0e0;
  --disclosure-faq-border: #e0e0e0;
}

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

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--page-bg);
  color: var(--page-fg);
  line-height: 1.6;
  min-height: 100vh;
}

/* ---- Nav ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--page-bg);
  border-bottom: 1px solid var(--page-border);
  padding: 0 1rem;
}

.nav__inner {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  padding: 0.5rem 0;
}

.nav__inner::-webkit-scrollbar {
  display: none;
}

.nav a {
  color: var(--page-muted);
  text-decoration: none;
  font-size: 0.8rem;
  white-space: nowrap;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
}

.nav a:hover {
  color: var(--page-fg);
  background: var(--page-surface);
}

.nav a.active {
  color: var(--page-accent);
  background: var(--page-surface);
}

.nav__brand {
  color: var(--page-accent) !important;
  font-weight: 700;
  font-size: 0.85rem !important;
  margin-right: 0.5rem;
}

.nav__docs {
  margin-left: auto;
  color: var(--page-accent) !important;
  font-weight: 600;
}

/* ---- Container ---- */
.container {
  max-width: 700px;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
}

/* ---- Page Header ---- */
.page-badge {
  display: inline-block;
  font-family: monospace;
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--page-border);
  border-radius: 4px;
  color: var(--page-muted);
  margin-bottom: 0.5rem;
}

.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--page-fg);
  margin-bottom: 0.5rem;
}

.page-desc {
  color: var(--page-muted);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

/* ---- Demo Section ---- */
.demo-section {
  border: 1px solid var(--page-border);
  border-radius: 8px;
  background: var(--page-surface);
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.demo-section__header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--page-border);
}

.demo-section__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--page-fg);
}

.demo-section__desc {
  font-size: 0.85rem;
  color: var(--page-muted);
  margin-top: 0.25rem;
}

.demo-section__body {
  padding: 1.25rem;
}

/* ---- Code Blocks ---- */
.code-block {
  background: var(--page-code-bg);
  border: 1px solid var(--page-border);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 0.8rem;
  overflow-x: auto;
  color: var(--page-fg);
  white-space: pre;
  line-height: 1.5;
}

/* ---- Info Box ---- */
.info-box {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  border: 1px solid var(--page-border);
  border-radius: 8px;
  background: var(--page-surface);
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  color: var(--page-muted);
}

.info-box__icon {
  flex-shrink: 0;
  font-size: 1.1rem;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-family: inherit;
  border-radius: 6px;
  border: 1px solid var(--page-border);
  background: var(--page-surface);
  color: var(--page-fg);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.btn:hover {
  background: var(--page-code-bg);
  border-color: var(--page-muted);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn--primary {
  background: var(--page-accent);
  color: #000;
  border-color: var(--page-accent);
  font-weight: 600;
}

.btn--primary:hover {
  opacity: 0.9;
  background: var(--page-accent);
}

/* ---- Utilities ---- */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-muted { color: var(--page-muted); }
.text-accent { color: var(--page-accent); }
.font-mono { font-family: monospace; }
.font-bold { font-weight: 700; }