/* docHub site styles
 * Based on FreshCards substrate visual chrome.
 * Card geometry: min 280×120, padding 4/8/12/16/24, radius 6/8/12.
 * Card metadata spine: card_id, version, tags, semantic_role, state, source_ref.
 */

:root {
  /* FreshCards-aligned palette */
  --primary: #2C5282;
  --primary-dark: #1a365d;
  --primary-light: #4299e1;
  --accent: #5b8cff;
  --accent-purple: #a78bfa;
  --accent-green: #4ade80;
  --accent-orange: #f59e0b;
  --accent-cyan: #38bdf8;
  --accent-pink: #ec4899;

  --text-primary: #2d3748;
  --text: #4a5568;
  --text-muted: #718096;
  --text-dim: #a0aec0;

  --bg: #ffffff;
  --sub: #f7fafc;
  --hull: #edf2f7;
  --border: #e2e8f0;
  --border-inner: #f1f5f9;
  --border-sep: #f7fafc;

  --code-bg: #1a202c;
  --code-text: #e2e8f0;

  --success: #48bb78;
  --warning: #ed8936;
  --danger: #f56565;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);

  --radius: 12px;
  --radius-sm: 8px;
  --radius-compact: 6px;
  --sidebar-width: 280px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #f7fafc;
    --text: #e2e8f0;
    --text-muted: #a0aec0;
    --text-dim: #718096;
    --bg: #1a202c;
    --sub: #2d3748;
    --hull: #4a5568;
    --border: #4a5568;
    --border-inner: #2d3748;
    --border-sep: #1a202c;
    --code-bg: #0f1419;
  }
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-size-adjust: 100%;
}

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

body { display: flex; min-height: 100vh; }

/* ── Sidebar (FreshCards workspace shell inspired) ─────────────── */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg);
  border-right: 1px solid var(--border);
  height: 100vh;
  position: fixed;
  left: 0; top: 0;
  overflow-y: auto;
  z-index: 50;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
}

.sidebar-logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.05rem;
  color: white; text-decoration: none;
}

.sidebar-logo svg { width: 28px; height: 28px; }
.sidebar-tagline {
  color: rgba(255,255,255,0.75);
  font-size: 0.75rem;
  margin-top: 4px;
  padding-left: 38px;
}

.sidebar-nav {
  padding: 14px 10px;
  flex: 1;
}

.nav-section { margin-bottom: 18px; }
.nav-section-title {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  padding: 0 12px;
  margin-bottom: 6px;
}

.nav-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text);
  text-decoration: none;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.1s;
}
.nav-item:hover { background: var(--sub); text-decoration: none; }
.nav-item.active {
  background: var(--primary);
  color: white;
  font-weight: 600;
}
.nav-item .count {
  margin-left: auto;
  font-size: 0.7rem;
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--hull);
  color: var(--text-muted);
}
.nav-item.active .count {
  background: rgba(255,255,255,0.2);
  color: white;
}

.quick-links {
  padding: 14px 10px;
  border-top: 1px solid var(--border);
}
.quick-links .nav-section-title { padding-left: 12px; }

/* ── Top bar ───────────────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 40;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: var(--sidebar-width);
}

.search {
  flex: 1; max-width: 500px;
  position: relative;
}
.search input {
  width: 100%;
  padding: 8px 12px 8px 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--sub);
  font-size: 0.9rem;
  color: var(--text-primary);
  font-family: inherit;
}
.search input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg);
}
.search::before {
  content: '🔍';
  position: absolute; left: 12px; top: 50%;
  transform: translateY(-50%);
  font-size: 0.9rem;
}

.sort-control {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.sort-control select {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-family: inherit;
  font-size: 0.85rem;
  color: var(--text-primary);
}

/* ── Main content area ────────────────────────────────────────── */
.main {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 24px 32px 60px;
  max-width: 100%;
  overflow-x: hidden;
}

/* ── Card grid ─────────────────────────────────────────────────── */
.section {
  margin-bottom: 32px;
}
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.section-title {
  display: flex; align-items: center; gap: 8px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}
.section-title .icon {
  font-size: 1rem;
  color: var(--accent);
}
.section-count {
  font-size: 0.75rem;
  color: var(--text-dim);
  background: var(--sub);
  border: 1px solid var(--border);
  padding: 2px 10px;
  border-radius: 999px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.freshcard {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.1s;
  position: relative;
  overflow: hidden;
}
.freshcard:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.freshcard[data-state="active"] {
  border-color: var(--accent);
  background: var(--sub);
}

.freshcard-front {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.freshcard-front .head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 6px;
}
.freshcard-front h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.3;
}
.freshcard-front .semantic-role {
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  border: 1px solid var(--border-inner);
  border-radius: 3px;
  padding: 1px 5px;
  white-space: nowrap;
  flex-shrink: 0;
}
.freshcard-front .summary {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.freshcard-front .meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
}
.freshcard-front .tag {
  font-size: 0.65rem;
  color: var(--text-dim);
  background: var(--hull);
  border: 1px solid var(--border-inner);
  border-radius: 999px;
  padding: 1px 7px;
}
.freshcard-front .category-label {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 700;
}

.freshcard .badges {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px solid var(--border-sep);
}
.badge {
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 500;
}
.badge-status {
  /* default - filled circle */
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.badge-status::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
}
.badge-status.complete::before { background: var(--success); }
.badge-status.in-progress::before { background: var(--accent); }
.badge-status.planned::before { background: var(--text-dim); }
.badge-status.archived::before { background: var(--text-dim); opacity: 0.5; }
.badge-status.blocked::before { background: var(--danger); }

.badge-status.complete { color: var(--success); background: #f0fff4; }
.badge-status.in-progress { color: var(--accent); background: #ebf8ff; }
.badge-status.planned { color: var(--text-muted); background: var(--hull); }
.badge-status.archived { color: var(--text-dim); background: var(--hull); }
.badge-status.blocked { color: var(--danger); background: #fff5f5; }

.badge-type {
  margin-left: auto;
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  padding: 2px 8px;
  border-radius: 999px;
}
.badge-type.doctrine { color: #6638b3; background: #f3ebff; }
.badge-type.decision { color: #2c5282; background: #ebf8ff; }
.badge-type.report { color: #2f855a; background: #f0fff4; }
.badge-type.plan { color: #b7791f; background: #fffaf0; }
.badge-type.lane { color: #5b8cff; background: #ebf8ff; }
.badge-type.dangerous { color: var(--danger); background: #fff5f5; }
.badge-type.reference { color: var(--text-muted); background: var(--hull); }
.badge-type.project { color: #319795; background: #e6fffa; }
.badge-type.concept { color: #d53f8c; background: #fff5f7; }
.badge-type.user-doc { color: var(--accent); background: #ebf8ff; }
.badge-type.bootstrap { color: var(--primary-dark); background: #ebf8ff; }
.badge-type.prompt { color: #b7791f; background: #fffaf0; }

@media (prefers-color-scheme: dark) {
  .badge-status.complete { background: rgba(72,187,120,0.15); }
  .badge-status.in-progress { background: rgba(91,140,255,0.15); }
  .badge-status.planned { background: rgba(255,255,255,0.05); }
  .badge-status.archived { background: rgba(255,255,255,0.05); }
  .badge-status.blocked { background: rgba(245,101,101,0.15); }
  .badge-type.doctrine { background: rgba(167,139,250,0.15); }
  .badge-type.decision { background: rgba(91,140,255,0.15); }
  .badge-type.report { background: rgba(72,187,120,0.15); }
  .badge-type.plan { background: rgba(245,158,11,0.15); }
  .badge-type.lane { background: rgba(91,140,255,0.15); }
  .badge-type.dangerous { background: rgba(245,101,101,0.15); }
  .badge-type.reference { background: rgba(255,255,255,0.05); }
  .badge-type.project { background: rgba(56,189,248,0.15); }
  .badge-type.concept { background: rgba(236,72,153,0.15); }
  .badge-type.user-doc { background: rgba(91,140,255,0.15); }
  .badge-type.bootstrap { background: rgba(91,140,255,0.15); }
  .badge-type.prompt { background: rgba(245,158,11,0.15); }
}

/* ── Doc detail view ───────────────────────────────────────────── */
.doc-detail {
  max-width: 820px;
  margin: 0 auto;
}
.doc-detail .back {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.doc-detail h1 {
  font-size: 1.75rem;
  margin: 0 0 12px;
  line-height: 1.25;
}
.doc-detail .doc-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 16px;
}
.doc-detail .doc-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 14px;
  background: var(--sub);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 0.8rem;
}
.doc-detail .doc-meta-bar .meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}
.doc-detail .doc-meta-bar .meta-key {
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.7rem;
}
.doc-detail .doc-meta-bar .meta-val {
  color: var(--text-primary);
  font-family: 'SF Mono', Menlo, monospace;
  font-size: 0.75rem;
}

.doc-body { font-size: 0.95rem; }
.doc-body h1, .doc-body h2, .doc-body h3, .doc-body h4 {
  color: var(--text-primary);
  margin-top: 1.6em;
  margin-bottom: 0.5em;
  line-height: 1.3;
}
.doc-body h1:first-child, .doc-body h2:first-child { margin-top: 0; }
.doc-body h2 {
  font-size: 1.3rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 4px;
}
.doc-body h3 { font-size: 1.1rem; }
.doc-body p { margin: 0.6em 0; }
.doc-body ul, .doc-body ol { padding-left: 1.5rem; }
.doc-body li { margin: 0.25em 0; }
.doc-body code {
  font-family: 'SF Mono', Menlo, monospace;
  font-size: 0.85em;
  background: var(--sub);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
}
.doc-body pre {
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.55;
  margin: 1em 0;
}
.doc-body pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: inherit;
}
.doc-body blockquote {
  border-left: 3px solid var(--accent);
  margin: 1em 0;
  padding: 0.25em 1em;
  color: var(--text-muted);
  background: var(--sub);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.doc-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 0.85rem;
  display: block;
  overflow-x: auto;
}
.doc-body table th,
.doc-body table td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
  vertical-align: top;
}
.doc-body table th {
  background: var(--sub);
  font-weight: 600;
  color: var(--text-primary);
}
.doc-body table tr:nth-child(even) td { background: var(--sub); }
.doc-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.5em 0;
}
.doc-body a { color: var(--accent); }

/* ── Loading / empty states ────────────────────────────────────── */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-dim);
  font-size: 0.85rem;
}
.empty {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
  background: var(--sub);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
}

/* ── Mobile (≤600px) ───────────────────────────────────────────── */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.2s;
  }
  .sidebar.open { transform: translateX(0); }
  .topbar, .main { margin-left: 0; }
  .topbar { padding: 12px 14px; }
  .main { padding: 14px; }
  .menu-btn {
    display: inline-flex;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: inherit;
  }
}
@media (min-width: 901px) {
  .menu-btn { display: none; }
}

@media (max-width: 600px) {
  body { font-size: 14px; }
  .card-grid { grid-template-columns: 1fr; }
  .doc-detail h1 { font-size: 1.4rem; }
  .doc-body { font-size: 0.92rem; }
  .doc-body pre { font-size: 0.78rem; padding: 10px 12px; }
}

/* ── Home face card (the page-root card) ──────────────────────── */
.face-card {
  background: linear-gradient(135deg, var(--sub), var(--bg));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}
.face-card h2 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--text-primary);
}
.face-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}