/* ─────────────────────────────────────────────────────────────────
   Performante Video Pipeline — Knowledge Base
   ───────────────────────────────────────────────────────────────── */

:root {
  --bg: #fafbfc;
  --surface: #ffffff;
  --surface-hover: #f5f7fa;
  --border: #e3e7ec;
  --border-strong: #c9d1da;
  --text: #1a1f2e;
  --text-muted: #5c6776;
  --text-dim: #8a96a5;
  --accent: #2563eb;
  --accent-soft: #eff5ff;
  --accent-strong: #1d4ed8;
  --gold: #b8860b;
  --green: #15803d;
  --green-soft: #ecfdf5;
  --red: #b91c1c;
  --red-soft: #fef2f2;
  --orange: #c2410c;
  --orange-soft: #fff7ed;
  --purple: #7c3aed;
  --purple-soft: #f5f3ff;
  --code-bg: #f5f7fa;
  --code-text: #1a1f2e;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.1);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Layout ──────────────────────────────────────────────────── */
.layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}

@media (max-width: 1024px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static !important; height: auto !important; }
}

/* ── Sidebar navigation ─────────────────────────────────────── */
.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 28px 22px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  font-size: 14px;
}

.sidebar .brand {
  font-weight: 800;
  font-size: 15px;
  color: var(--text);
  margin-bottom: 4px;
  letter-spacing: -0.2px;
}

.sidebar .brand-sub {
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 28px;
}

.sidebar h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  color: var(--text-dim);
  margin: 22px 0 8px;
  font-weight: 700;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0 0 4px 0;
}

.sidebar li {
  margin: 0;
}

.sidebar a {
  display: block;
  padding: 6px 10px;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: 6px;
  font-size: 13px;
  line-height: 1.4;
  transition: all 0.12s ease;
}

.sidebar a:hover {
  background: var(--surface-hover);
  color: var(--text);
}

.sidebar a.active {
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 600;
}

.sidebar a .badge {
  display: inline-block;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--border);
  color: var(--text-muted);
  margin-left: 6px;
  font-weight: 600;
  vertical-align: middle;
}

.sidebar a.active .badge {
  background: var(--accent);
  color: white;
}

/* ── Main content ───────────────────────────────────────────── */
.main {
  padding: 48px 56px 96px;
  max-width: 980px;
  min-width: 0;
}

.main .breadcrumb {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.main .breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}

.main .breadcrumb a:hover {
  color: var(--accent);
}

h1, h2, h3, h4 {
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.4px;
  line-height: 1.25;
}

h1 {
  font-size: 36px;
  margin: 0 0 8px;
  letter-spacing: -0.8px;
}

h1 + .subtitle {
  font-size: 18px;
  color: var(--text-muted);
  margin: 0 0 36px;
  font-weight: 400;
  line-height: 1.5;
}

h2 {
  font-size: 26px;
  margin: 48px 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

h3 {
  font-size: 19px;
  margin: 32px 0 10px;
}

h4 {
  font-size: 15px;
  margin: 22px 0 8px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}

p {
  margin: 12px 0;
}

ul, ol {
  padding-left: 24px;
  margin: 12px 0;
}

li {
  margin: 4px 0;
}

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

a:hover {
  text-decoration: underline;
}

/* ── Code ────────────────────────────────────────────────────── */
code {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: "SF Mono", Monaco, "Cascadia Mono", "Roboto Mono",
    Consolas, "Courier New", monospace;
  font-size: 0.88em;
  border: 1px solid var(--border);
}

pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 18px 22px;
  border-radius: 10px;
  overflow-x: auto;
  border: 1px solid var(--border);
  font-family: "SF Mono", Monaco, "Cascadia Mono", "Roboto Mono", Consolas, monospace;
  font-size: 13px;
  line-height: 1.55;
  margin: 16px 0;
}

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

/* ── Tables ──────────────────────────────────────────────────── */
table {
  border-collapse: collapse;
  width: 100%;
  margin: 18px 0;
  font-size: 14px;
  background: var(--surface);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

thead {
  background: var(--surface-hover);
}

th, td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  font-weight: 700;
  color: var(--text);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--surface-hover);
}

td code {
  font-size: 12px;
}

/* ── Callouts (info / warn / tip / danger) ───────────────────── */
.callout {
  padding: 16px 20px;
  border-radius: 10px;
  margin: 18px 0;
  border-left: 4px solid;
  font-size: 14px;
  line-height: 1.6;
}

.callout p:first-child { margin-top: 0; }
.callout p:last-child { margin-bottom: 0; }

.callout-tip {
  background: var(--green-soft);
  border-color: var(--green);
}

.callout-tip strong { color: var(--green); }

.callout-info {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.callout-info strong { color: var(--accent-strong); }

.callout-warn {
  background: var(--orange-soft);
  border-color: var(--orange);
}

.callout-warn strong { color: var(--orange); }

.callout-danger {
  background: var(--red-soft);
  border-color: var(--red);
}

.callout-danger strong { color: var(--red); }

.callout-key {
  background: var(--purple-soft);
  border-color: var(--purple);
}

.callout-key strong { color: var(--purple); }

/* ── Skill cards (used on index + overview) ──────────────────── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
  margin: 24px 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  text-decoration: none;
  color: var(--text);
  transition: all 0.15s ease;
  display: block;
  box-shadow: var(--shadow-sm);
}

.card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
}

.card .card-num {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 700;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.card h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.card p {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── Skill page header ───────────────────────────────────────── */
.skill-header {
  background: linear-gradient(135deg, var(--accent-soft) 0%, var(--purple-soft) 100%);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 32px;
  margin: 0 0 36px;
}

.skill-header .skill-id {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-strong);
  font-weight: 700;
  margin-bottom: 4px;
}

.skill-header h1 {
  margin: 0 0 8px;
  font-size: 32px;
}

.skill-header .tagline {
  font-size: 17px;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
}

/* ── Meta tile grid (used in skill pages: triggers, files, etc) ─ */
.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin: 18px 0;
}

.meta-tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
}

.meta-tile .label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  font-weight: 700;
  margin-bottom: 6px;
}

.meta-tile .value {
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
  word-break: break-word;
}

.meta-tile code {
  font-size: 12px;
}

/* ── Chip list (tags) ────────────────────────────────────────── */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 8px 0;
}

.chip {
  display: inline-block;
  background: var(--surface-hover);
  color: var(--text-muted);
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid var(--border);
}

.chip-accent {
  background: var(--accent-soft);
  color: var(--accent-strong);
  border-color: var(--accent);
}

.chip-gold {
  background: #fef9c3;
  color: var(--gold);
  border-color: var(--gold);
}

/* ── Pipeline diagram (ASCII-style boxes + arrows) ───────────── */
.diagram {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin: 24px 0;
  overflow-x: auto;
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text);
}

.diagram .step {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent-strong);
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--accent);
  font-weight: 600;
  font-size: 13px;
  margin: 4px 0;
}

.diagram .arrow {
  color: var(--text-dim);
  font-weight: 700;
}

/* ── Color swatches (for presets/brand) ──────────────────────── */
.swatch-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 8px 0;
}

.swatch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px 4px 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12px;
  font-family: "SF Mono", monospace;
}

.swatch .dot {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

/* ── Section flags ───────────────────────────────────────────── */
.flag {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 1px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  vertical-align: middle;
  margin-left: 8px;
}

.flag-new { background: var(--green); }
.flag-deprecated { background: var(--red); }
.flag-beta { background: var(--orange); }

/* ── Print ───────────────────────────────────────────────────── */
@media print {
  .sidebar { display: none; }
  .layout { grid-template-columns: 1fr; }
  .main { padding: 20px; max-width: none; }
  pre, table { break-inside: avoid; }
}