/* Kefal docs — shares palette/fonts with landing (style.css) and adds docs-specific layout */

:root {
  --bg: #0A0A0A;
  --surface: #131313;
  --surface-2: #1A1A1A;
  --fg: #E8E8E8;
  --muted: #8A8A8A;
  --dim: #5A5A5A;
  --accent: #7FD962;
  --border: #1A1A1A;
  --border-soft: rgba(127, 217, 98, 0.3);
  --danger: #FF6B6B;
  --warn: #F4A261;
}

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

html, body { margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

/* ── Top nav: sticky, minimal ── */
.docs-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.docs-nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0.9rem 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.docs-nav .brand {
  color: var(--fg);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.docs-nav .brand .brand-tag {
  color: var(--muted);
  font-weight: 400;
  margin-left: 0.35rem;
}

.docs-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.docs-nav li a {
  color: var(--muted);
  font-size: 0.95rem;
}

.docs-nav li a.active,
.docs-nav li a:hover {
  color: var(--fg);
  text-decoration: none;
}

/* ── Main content column ── */
main {
  flex: 1;
  width: 100%;
  max-width: 780px;
  margin: 0 auto;
  padding: 4rem 32px 6rem;
}

h1 {
  font-size: 2.25rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

.page-subtitle {
  color: var(--muted);
  font-size: 1.1rem;
  margin: 0 0 3rem;
}

h2 {
  font-size: 1.4rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 3rem 0 1rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

h2:first-of-type { border-top: none; padding-top: 0; margin-top: 2rem; }

h3 {
  font-size: 1.1rem;
  font-weight: 500;
  margin: 2rem 0 0.5rem;
}

p, ul, ol { margin: 0 0 1.1rem; }

ul, ol { padding-left: 1.3rem; }

li { margin-bottom: 0.35rem; }

strong { color: var(--fg); font-weight: 600; }

/* ── Code ── */
code {
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
  font-size: 0.93em;
  background: var(--surface);
  padding: 0.1em 0.4em;
  border-radius: 3px;
  color: #E4E4E4;
}

pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.2rem;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 1rem 0 1.5rem;
}

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

/* ── Callouts ── */
.callout {
  border-left: 3px solid var(--accent);
  background: var(--surface);
  padding: 0.9rem 1.2rem;
  margin: 1.25rem 0;
  border-radius: 0 4px 4px 0;
  font-size: 0.97rem;
}

.callout.warn { border-color: var(--warn); }
.callout.danger { border-color: var(--danger); }

.callout strong { display: block; margin-bottom: 0.25rem; }

/* ── Landing cards on /docs/ ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.card {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.25rem;
  background: var(--surface);
  transition: border-color 120ms ease;
}

.card:hover { border-color: var(--border-soft); }

.card h3 { margin: 0 0 0.4rem; font-size: 1.05rem; }
.card p  { margin: 0; color: var(--muted); font-size: 0.95rem; }
.card a  { color: inherit; }
.card a:hover { text-decoration: none; }

/* ── Invariants grid (32 entries) ── */
.inv-category {
  margin: 2.5rem 0 1rem;
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.inv-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.inv-entry {
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.9rem 1.1rem;
  background: var(--surface);
}

.inv-entry .inv-head {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  margin-bottom: 0.4rem;
  flex-wrap: wrap;
}

.inv-entry .inv-name {
  font-weight: 600;
  color: var(--fg);
}

.inv-entry .inv-sev {
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.1rem 0.45rem;
  border-radius: 3px;
  background: var(--surface-2);
  color: var(--muted);
}

.inv-entry .inv-sev.critical { color: var(--danger); }
.inv-entry .inv-sev.high     { color: var(--warn); }
.inv-entry .inv-sev.medium   { color: var(--accent); }
.inv-entry .inv-sev.low      { color: var(--dim); }

.inv-entry .inv-desc {
  color: var(--muted);
  font-size: 0.94rem;
  margin: 0;
}

/* ── API table ── */
table.api {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 2rem;
  font-size: 0.94rem;
}

table.api th, table.api td {
  padding: 0.55rem 0.7rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

table.api th {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

table.api td code { font-size: 0.88rem; }

.method {
  display: inline-block;
  min-width: 44px;
  text-align: center;
  padding: 0.05rem 0.4rem;
  border-radius: 3px;
  font-size: 0.74rem;
  font-weight: 600;
  font-family: ui-monospace, monospace;
}
.method.get  { background: #1a2b1a; color: var(--accent); }
.method.post { background: #2b1a1a; color: var(--warn);   }

/* ── Footer ── */
.docs-footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 32px 3rem;
  border-top: 1px solid var(--border);
  color: var(--dim);
  font-size: 0.88rem;
  text-align: center;
}

.docs-footer a { color: var(--muted); }

/* ── Responsive ── */
@media (max-width: 640px) {
  .docs-nav-inner { flex-direction: column; align-items: flex-start; gap: 0.5rem; padding: 0.8rem 20px; }
  .docs-nav ul { gap: 1rem; }
  main { padding: 2.5rem 20px 4rem; }
  h1 { font-size: 1.75rem; }
}