/*
 * UNBLOCK · docs.kaeva.app — editorial newsroom aesthetic
 * Shared styles for /cookbook, /architecture, /quickstart.
 *
 * Brand-locked. Mirrors web/landing/index.html (unblk.kaeva.app).
 * Do NOT introduce a new design language. Inter / Roboto are forbidden.
 * See docs/brand/README.md.
 */

:root {
  --ink: #ebe2cb;
  --ink-mut: #8a8a76;
  --ink-dim: #5a5a48;
  --paper: #161b27;
  --paper-elev: #1c2231;
  --bg: #080a14;
  --bg-deep: #050810;
  --line: #1f2538;
  --line-bright: #2c3550;
  --accent: #a583ff;
  --accent-deep: #6c4cff;
  --copper: #d8965a;
  --pulse: #5ade88;
  --serif: 'Instrument Serif', Georgia, serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14.5px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--mono);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse at 20% 10%, rgba(108,76,255,0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 90%, rgba(216,150,90,0.04) 0%, transparent 60%);
  color: var(--ink);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  letter-spacing: 0.01em;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.012) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.012) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}
a { color: var(--accent); text-decoration: none; transition: color 0.2s ease; border-bottom: 1px dotted currentColor; }
a:hover { color: var(--copper); }
::selection { background: rgba(165,131,255,0.35); color: var(--ink); }

/* ─── Top nav ─── */
.topnav {
  position: sticky; top: 0; z-index: 50;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--line);
  padding: 14px clamp(20px, 4vw, 56px);
  display: flex; align-items: center; gap: 28px;
  font-family: var(--mono); font-size: 11.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
}
.topnav .brand-row { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.topnav .brick { width: 28px; height: 28px; }
.topnav .wordmark { color: var(--ink); font-weight: 500; letter-spacing: 0.18em; }
.topnav .wordmark .docs-badge { color: var(--copper); margin-left: 8px; }
.topnav nav { display: flex; gap: 22px; flex-wrap: wrap; }
.topnav nav a {
  color: var(--ink-mut); border-bottom: none;
  padding-bottom: 2px;
}
.topnav nav a:hover, .topnav nav a.active { color: var(--accent); border-bottom: 1px solid var(--accent); }
.topnav .api-link {
  margin-left: auto;
  color: var(--ink-mut);
  border-bottom: none;
}
.topnav .api-link:hover { color: var(--copper); }

@media (max-width: 760px) {
  .topnav { flex-wrap: wrap; gap: 14px; }
  .topnav .api-link { margin-left: 0; }
}

/* ─── Masthead (page header) ─── */
.masthead {
  position: relative; z-index: 2;
  padding: 48px clamp(24px, 5vw, 64px) 28px;
  border-bottom: 1px solid var(--line);
}
.masthead .kicker {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 18px;
  display: flex; gap: 18px; align-items: center; flex-wrap: wrap;
}
.masthead .kicker .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--ink-dim); }
.masthead h1 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(36px, 5.6vw, 68px);
  line-height: 0.98; letter-spacing: -0.018em;
  color: var(--ink); margin: 0 0 18px;
  max-width: 920px;
}
.masthead h1 em { font-style: italic; color: var(--accent); }
.masthead .deck {
  font-family: var(--serif); font-style: italic;
  font-size: clamp(16px, 1.7vw, 20px);
  line-height: 1.45; color: var(--ink-mut);
  max-width: 760px; margin: 0;
}

/* ─── Section rules ─── */
.section-rule {
  display: flex; align-items: center;
  padding: 36px clamp(24px, 5vw, 64px) 0;
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--copper); gap: 16px;
}
.section-rule .line { flex: 1; height: 1px; background: var(--line); }

/* ─── Sections / prose ─── */
section {
  position: relative; z-index: 2;
  padding: 28px clamp(24px, 5vw, 64px);
}
section .inner { max-width: 920px; }
section.wide .inner { max-width: 1100px; }
section h2 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.05; letter-spacing: -0.012em;
  color: var(--ink); margin-bottom: 18px;
}
section h2 em { font-style: italic; color: var(--accent); }
section h3 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.18; color: var(--ink);
  margin: 24px 0 8px;
}
section h3 em { font-style: italic; color: var(--accent); }
section h4 {
  font-family: var(--mono); font-weight: 500;
  font-size: 11.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--copper);
  margin: 18px 0 8px;
}
section p {
  font-family: var(--mono); font-size: 13.5px;
  line-height: 1.7; color: var(--ink-mut);
  margin-bottom: 14px; max-width: 760px;
}
section p em { font-style: italic; color: var(--ink); padding: 0 2px; }
section p strong { color: var(--ink); font-weight: 500; }
section ul, section ol {
  margin: 8px 0 16px 20px;
  font-family: var(--mono); font-size: 13.5px;
  color: var(--ink-mut); max-width: 760px;
}
section li { line-height: 1.7; margin-bottom: 6px; }
section li code { font-size: 12px; }

/* ─── Pre / code ─── */
pre {
  background: var(--paper); border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
  padding: 16px 20px; margin: 14px 0 22px;
  font-family: var(--mono); font-size: 12.5px;
  line-height: 1.6; color: var(--ink);
  overflow-x: auto; border-radius: 2px;
}
pre code { background: transparent; padding: 0; color: inherit; font-size: inherit; }
code {
  font-family: var(--mono); font-size: 12.5px;
  color: var(--accent); background: rgba(165,131,255,0.06);
  padding: 1px 5px; border-radius: 2px;
}

/* highlight.js overrides — keep our newsroom palette */
.hljs { background: transparent !important; color: var(--ink) !important; padding: 0 !important; }
.hljs-keyword, .hljs-selector-tag, .hljs-built_in { color: var(--accent); }
.hljs-string, .hljs-attr { color: var(--copper); }
.hljs-comment, .hljs-meta { color: var(--ink-dim); font-style: italic; }
.hljs-number, .hljs-literal { color: var(--pulse); }
.hljs-title, .hljs-section, .hljs-name { color: var(--ink); }
.hljs-tag, .hljs-symbol { color: var(--ink-mut); }

/* ─── Cookbook IDE tabs ─── */
.tabbar {
  display: flex; gap: 2px; flex-wrap: wrap;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px; padding-top: 8px;
}
.tabbar button {
  background: transparent; border: none; cursor: pointer;
  padding: 10px 20px;
  font-family: var(--mono); font-size: 11.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-mut);
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}
.tabbar button:hover { color: var(--ink); }
.tabbar button.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ─── Card grids (architecture, etc.) ─── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px; margin: 22px 0;
}
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent-deep);
  padding: 20px 22px;
  display: flex; flex-direction: column; gap: 8px;
}
.card .label {
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--copper);
}
.card h3 { margin: 0; font-size: 18px; line-height: 1.2; }
.card p { font-size: 12.5px; margin: 0; }

/* ─── Verb grid ─── */
.verbs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 8px; margin: 18px 0 24px;
}
.verb {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 12px 14px;
  font-family: var(--mono); font-size: 12px;
}
.verb .name {
  color: var(--accent);
  letter-spacing: 0.04em;
  display: block; margin-bottom: 4px;
}
.verb .desc { color: var(--ink-mut); font-size: 11.5px; line-height: 1.5; }

/* ─── Steps (quickstart) ─── */
.steps { display: flex; flex-direction: column; gap: 28px; margin: 24px 0; }
.step { display: grid; grid-template-columns: 56px 1fr; gap: 22px; align-items: start; }
.step .num {
  font-family: var(--mono); font-size: 12px;
  color: var(--copper); letter-spacing: 0.18em;
  padding-top: 4px;
}
.step h3 { margin-top: 0; }

/* ─── Pitch toggle (architecture) ─── */
.toggle-wrap {
  display: flex; gap: 10px; align-items: center;
  margin: 18px 0 24px;
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-mut);
}
.toggle-pill {
  display: inline-flex; gap: 0;
  border: 1px solid var(--line-bright);
  padding: 0; border-radius: 2px; overflow: hidden;
}
.toggle-pill button {
  background: transparent; border: none; cursor: pointer;
  padding: 9px 18px;
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-mut);
  transition: all 0.2s ease;
}
.toggle-pill button:hover { color: var(--ink); }
.toggle-pill button.active { background: var(--accent); color: var(--bg); }
.pitch-panel { display: none; }
.pitch-panel.active { display: block; }

/* ─── Mermaid container ─── */
.mermaid-wrap {
  background: var(--paper); border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
  padding: 24px; margin: 18px 0 24px;
  overflow-x: auto;
}
.mermaid {
  font-family: var(--mono) !important;
  font-size: 12px !important;
}

/* ─── Tables (schema overview) ─── */
table.schema {
  width: 100%; max-width: 1000px;
  margin: 18px 0 24px; border-collapse: collapse;
  font-family: var(--mono); font-size: 12px;
}
table.schema th {
  text-align: left; padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-dim); text-transform: uppercase;
  letter-spacing: 0.14em; font-size: 10px; font-weight: 500;
}
table.schema td {
  padding: 10px 12px; border-bottom: 1px solid var(--line);
  color: var(--ink-mut); vertical-align: top;
}
table.schema td:first-child {
  color: var(--accent); font-weight: 500; white-space: nowrap;
}
table.schema td code { font-size: 11.5px; }

/* ─── Callouts ─── */
.callout {
  border: 1px solid var(--line);
  border-left: 2px solid var(--copper);
  background: rgba(216,150,90,0.04);
  padding: 14px 18px; margin: 16px 0 20px;
  font-family: var(--mono); font-size: 12.5px;
  color: var(--ink-mut); max-width: 820px;
}
.callout strong { color: var(--copper); }

/* ─── CTA ─── */
.cta {
  display: inline-block;
  padding: 12px 26px;
  background: var(--accent);
  color: var(--bg); border: none;
  font-family: var(--mono); font-size: 12px;
  letter-spacing: 0.14em; text-transform: uppercase;
  text-decoration: none; border-bottom: none;
  margin-top: 8px;
  transition: background 0.2s ease;
}
.cta:hover { background: var(--copper); color: var(--bg); }
.cta.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line-bright); }
.cta.ghost:hover { color: var(--accent); border-color: var(--accent); }
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; margin: 16px 0 22px; }

/* ─── Footer ─── */
footer {
  position: relative; z-index: 2;
  border-top: 1px solid var(--line);
  margin-top: 60px;
  padding: 44px clamp(24px, 5vw, 64px) 30px;
}
footer .grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px; max-width: 1100px;
}
footer .brand-block { display: flex; flex-direction: column; gap: 8px; }
footer .brand-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
footer .brand-row .brick { width: 28px; height: 28px; }
footer .brand-row .name {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink);
}
footer .made-by {
  font-family: var(--serif); font-style: italic;
  font-size: 13.5px; line-height: 1.5;
  color: var(--ink-mut); max-width: 320px; margin: 6px 0;
}
footer .col h4 {
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--copper); margin-bottom: 12px;
}
footer .col a {
  display: block; font-family: var(--mono); font-size: 12px;
  color: var(--ink-mut); margin-bottom: 6px;
  border-bottom: none; letter-spacing: 0.02em;
}
footer .col a:hover { color: var(--ink); }
footer .colophon {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-dim); margin-top: 32px;
  padding-top: 18px; border-top: 1px solid var(--line);
}

@media (max-width: 760px) {
  footer .grid { grid-template-columns: 1fr 1fr; gap: 26px; }
  footer .brand-block { grid-column: span 2; }
  .step { grid-template-columns: 32px 1fr; gap: 14px; }
}