/* khook site — self-contained stylesheet, no external assets.
   Dark by default; light via prefers-color-scheme. */

:root {
  --bg: #0b1020;
  --bg-alt: #0f1530;
  --panel: #121938;
  --border: #232c52;
  --text: #e7eaf4;
  --muted: #a0a9c1;
  --faint: #6d7692;
  --accent: #38cfe6;      /* teal — actions, links */
  --accent-2: #6ea8fe;    /* k8s blue — secondary */
  --ok: #4ade80;
  --warn: #fbbf24;
  --code-bg: #0d1229;
  --code-border: #1e2749;
  --hl-comment: #64748b;
  --hl-key: #7dd3fc;
  --hl-str: #a5e8b0;
  --hl-num: #f0c674;
  --hl-kw: #c4a7fb;
  --hl-prompt: #64748b;
  --shadow: 0 20px 60px rgba(3, 6, 18, 0.55);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --bg-alt: #f5f7fc;
    --panel: #ffffff;
    --border: #dfe5f1;
    --text: #182036;
    --muted: #4d5871;
    --faint: #8a91a8;
    --accent: #0e7490;
    --accent-2: #2563eb;
    --code-bg: #0d1229;      /* code stays dark in both themes */
    --code-border: #1e2749;
    --shadow: 0 16px 44px rgba(23, 32, 64, 0.12);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  text-rendering: optimizeLegibility;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  font-weight: 700;
  font-size: 19px;
  color: var(--text);
  letter-spacing: -0.02em;
}
.brand:hover { text-decoration: none; }
.brand-mark { margin-right: 8px; }

.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a { color: var(--muted); font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-links .nav-github {
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 12px;
}
.nav-links .nav-github:hover { border-color: var(--accent); }

/* ---------- hero ---------- */

.hero {
  padding: 88px 0 72px;
  background:
    radial-gradient(900px 420px at 15% -10%, rgba(56, 207, 230, 0.14), transparent 60%),
    radial-gradient(800px 420px at 90% 0%, rgba(110, 168, 254, 0.12), transparent 60%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(34px, 5vw, 48px);
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin: 0 0 18px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero .lede {
  font-size: 18px;
  color: var(--muted);
  margin: 0 0 30px;
  max-width: 46ch;
}

.cta-row { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  font-weight: 600;
  font-size: 15px;
  border-radius: 10px;
  padding: 11px 22px;
  transition: transform 0.12s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #04121a; }
.btn-secondary {
  color: var(--text);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 60%, transparent);
}
.btn-secondary:hover { border-color: var(--accent); }

/* ---------- terminal / code windows ---------- */

.window {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.window + .window { margin-top: 16px; }

.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--code-border);
}
.window-bar .dot { width: 11px; height: 11px; border-radius: 50%; }
.dot-r { background: #f6635a; }
.dot-y { background: #f5bd4f; }
.dot-g { background: #43c645; }
.window-bar .window-title {
  margin-left: 8px;
  font-size: 12.5px;
  color: #7c86a4;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.window pre { margin: 0; border: 0; border-radius: 0; box-shadow: none; }
figure.highlight { margin: 0; }

/* ---------- code ---------- */

pre, code, kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

code {
  font-size: 0.88em;
  background: color-mix(in srgb, var(--accent-2) 12%, var(--bg-alt));
  border-radius: 5px;
  padding: 0.12em 0.38em;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 10px;
  padding: 16px 18px;
  overflow-x: auto;
  line-height: 1.55;
  font-size: 13.5px;
  color: #dbe2f4;
}
pre code { background: none; padding: 0; font-size: inherit; color: inherit; }

/* rouge tokens (dark code panels in both themes) */
.highlight .c, .highlight .c1, .highlight .cm { color: var(--hl-comment); font-style: italic; }
.highlight .k, .highlight .kd, .highlight .kn, .highlight .kt { color: var(--hl-kw); }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sx { color: var(--hl-str); }
.highlight .m, .highlight .mi, .highlight .mf { color: var(--hl-num); }
.highlight .na, .highlight .nt, .highlight .nl { color: var(--hl-key); }
.highlight .nb, .highlight .no, .highlight .kc { color: var(--hl-num); }
.highlight .nv, .highlight .vg { color: var(--accent); }
.highlight .o, .highlight .p, .highlight .pi { color: #93a0c0; }
.highlight .gp { color: var(--hl-prompt); user-select: none; }
.highlight .go { color: #b9c3dd; }
.highlight .ge { font-style: italic; }
.highlight .err { color: inherit; background: none; }

.console-ok { color: var(--ok); }

/* ---------- landing sections ---------- */

.section { padding: 72px 0; }
.section.alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-kicker {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin: 0 0 10px;
}

.section h2 {
  font-size: clamp(26px, 3.4vw, 34px);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 16px;
}

.section .section-lede {
  color: var(--muted);
  font-size: 17px;
  max-width: 72ch;
  margin: 0 0 36px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 22px 18px;
}
.feature .feature-icon { font-size: 22px; }
.feature h3 { margin: 10px 0 8px; font-size: 17px; letter-spacing: -0.01em; }
.feature p { margin: 0; color: var(--muted); font-size: 14.5px; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.checklist { list-style: none; margin: 0; padding: 0; }
.checklist li {
  padding-left: 30px;
  position: relative;
  margin-bottom: 14px;
  color: var(--muted);
}
.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--ok);
  font-weight: 700;
}
.checklist li strong { color: var(--text); }

/* verbs table */

.verbs-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.verbs-table th, .verbs-table td {
  text-align: left;
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
}
.verbs-table th {
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--faint);
}
.verbs-table td:first-child code { color: var(--hl-key); background: var(--code-bg); border: 1px solid var(--code-border); }
.verbs-table td:last-child { color: var(--faint); }
.verbs-table td { color: var(--muted); }

.table-scroll { overflow-x: auto; }

/* closing CTA */

.cta-final { text-align: center; padding: 88px 0; }
.cta-final h2 { font-size: clamp(26px, 3.4vw, 36px); margin: 0 0 14px; letter-spacing: -0.02em; }
.cta-final p { color: var(--muted); margin: 0 0 30px; }
.cta-final .cta-row { justify-content: center; }

/* ---------- docs ---------- */

.docs-grid {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 56px;
  padding-top: 44px;
  padding-bottom: 88px;
}

.docs-sidebar nav {
  position: sticky;
  top: 84px;
  font-size: 14.5px;
}
.sidebar-heading {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--faint);
  margin: 26px 0 8px;
}
.docs-sidebar .sidebar-heading:first-child { margin-top: 4px; }
.docs-sidebar ul { list-style: none; margin: 0; padding: 0; }
.docs-sidebar li a {
  display: block;
  color: var(--muted);
  padding: 5px 10px;
  margin-left: -10px;
  border-radius: 7px;
}
.docs-sidebar li a:hover { color: var(--text); text-decoration: none; background: var(--bg-alt); }
.docs-sidebar li a.current {
  color: var(--accent);
  font-weight: 600;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.doc-body { min-width: 0; }
.doc-body h1 { font-size: 32px; letter-spacing: -0.02em; line-height: 1.2; margin: 0 0 18px; }
.doc-body h2 {
  font-size: 23px;
  letter-spacing: -0.01em;
  margin: 44px 0 14px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.doc-body h3 { font-size: 18px; margin: 30px 0 10px; }
.doc-body p, .doc-body li { color: var(--muted); }
.doc-body li { margin-bottom: 6px; }
.doc-body strong { color: var(--text); }
.doc-body blockquote {
  margin: 0;
  padding: 2px 20px;
  border-left: 3px solid var(--accent);
  background: var(--bg-alt);
  border-radius: 0 8px 8px 0;
}

.doc-body table {
  display: block;
  width: max-content;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 14px;
  margin: 18px 0;
}
.doc-body th, .doc-body td {
  text-align: left;
  padding: 8px 12px;
  border: 1px solid var(--border);
  color: var(--muted);
  vertical-align: top;
}
.doc-body th { color: var(--text); background: var(--bg-alt); font-size: 13px; }

.doc-body pre { margin: 16px 0; }

/* ---------- mermaid diagrams ---------- */

.mermaid-figure {
  display: flex;
  justify-content: center;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px 18px;
  margin: 18px 0;
  overflow-x: auto;
}
.mermaid-figure pre.mermaid {
  margin: 0;
  padding: 0;
  background: none;
  border: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  color: var(--muted); /* raw text color until (or unless) mermaid renders */
}
.mermaid-figure svg {
  width: 640px; /* scale up from mermaid's natural size; SVG stays crisp */
  max-width: 100% !important; /* overrides mermaid's inline natural-size cap */
  height: auto;
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
  padding: 52px 0 34px;
  font-size: 14.5px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
}
.footer-brand .brand { margin: 0 0 10px; font-size: 18px; }
.footer-tag { color: var(--faint); margin: 0; }
.footer-heading {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--faint);
  margin: 0 0 10px;
}
.footer-grid a { display: block; color: var(--muted); padding: 3px 0; }
.footer-grid a:hover { color: var(--text); text-decoration: none; }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .hero { padding: 56px 0 48px; }
  .hero-grid, .split { grid-template-columns: 1fr; gap: 36px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .docs-grid { grid-template-columns: 1fr; gap: 12px; }
  .docs-sidebar nav { position: static; }
  .docs-sidebar {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 6px 18px 16px;
    margin-bottom: 28px;
    background: var(--bg-alt);
  }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .feature-grid { grid-template-columns: 1fr; }
  .brand { font-size: 17px; margin-right: 12px; }
  .nav-links { gap: 12px; }
  .nav-links a:not(.nav-github) { font-size: 13.5px; }
  .nav-links a[href*="examples"] { display: none; }
  .nav-links .nav-github { padding: 5px 9px; font-size: 13.5px; }
}