/* ============================================================
   Cortibase website — shared layout (nav, frame, hero, sections,
   footer, reveal). Tokens only: every value comes from
   /design-system/design-tokens/design-tokens.css.
   ============================================================ */
/* All values come from /design-system/design-tokens/design-tokens.css. No local tokens. */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body {
  margin: 0; padding: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--crimson); }
a:hover { color: var(--crimson-hover); }
.mono { font-family: var(--font-sans); font-variant-numeric: tabular-nums; }

/* ---------- shared drafting frame: rails run through every section ---------- */
.frame {
  position: relative;
  max-width: var(--frame-w);
  margin: 0 auto;
  border-left: 1px solid var(--hair);
  border-right: 1px solid var(--hair);
}
.tick { position: absolute; font-family: var(--font-sans); font-size: 11px; color: var(--muted-2); line-height: 1; }
.rule { border: 0; border-top: 1px dashed var(--hair-dash); width: 100vw; margin: 0 0 0 calc(50% - 50vw); }

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  background: var(--nav-glass);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--hair);
}
.nav-inner {
  max-width: var(--frame-w); margin: 0 auto; height: 60px;
  padding: 0 2.5rem;
  display: flex; align-items: center; justify-content: space-between;
}
.brand {
  display: flex; align-items: center; gap: .55rem;
  font-family: var(--font-sans); font-weight: 800; font-size: 1.16rem;
  letter-spacing: -0.055em; color: var(--ink); text-decoration: none;
}
.brand .logo { width: 30px; height: 30px; display: grid; place-items: center; background: transparent; color: var(--crimson); border-radius: 0; flex: none; }
.brand .logo svg { width: 30px; height: 30px; display: block; }
.nav-links { display: flex; gap: 2rem; }
.nav-links a {
  color: var(--muted); font-size: .86rem; font-weight: 600;
  text-decoration: none; transition: color .15s; letter-spacing: -0.01em;
}
.nav-links a:hover { color: var(--ink); }
.nav-right { display: flex; align-items: center; gap: 1.4rem; }
.nav-cta {
  font-size: .84rem; font-weight: 700; color: var(--ink); text-decoration: none;
  border: 1px solid var(--ink); border-radius: 0;
  padding: .5rem 1.1rem; letter-spacing: -0.01em;
  transition: background .15s, color .15s;
}
.nav-cta:hover { background: var(--ink); color: var(--bg); }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; }
.hero .frame { min-height: 100vh; display: flex; align-items: center; padding-top: 60px; }
.hero-copy { position: relative; z-index: 2; max-width: 600px; padding: 0 0 0 3.5rem; }

.spec {
  font-family: var(--font-sans);
  font-size: .72rem; letter-spacing: .16em; color: var(--muted); font-weight: 700; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: .7rem;
  margin-bottom: 2rem;
}
.spec::before { content: ""; width: 34px; height: 1px; background: var(--ink); display: inline-block; }

h1 {
  font-family: var(--font-sans);
  font-size: clamp(2.7rem, 4.9vw, 4.15rem);
  font-weight: 700; letter-spacing: -0.045em; line-height: 1.02;
  margin: 0 0 1.5rem;
}
h1 em { font-style: normal; color: var(--crimson); }
.sub {
  font-size: 1.06rem; line-height: 1.7; color: var(--muted); font-weight: 500;
  max-width: 31rem; margin: 0 0 2.4rem;
}
.cta-row { display: flex; align-items: center; gap: 1rem; margin-bottom: 3.4rem; }
.cta {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--crimson); color: var(--surface);
  font-size: .92rem; font-weight: 700; letter-spacing: -0.01em;
  padding: .82rem 1.5rem; border-radius: 0; text-decoration: none;
  transition: background .18s;
}
.cta:hover { background: var(--crimson-hover); color: var(--surface); }
.cta.quiet {
  background: transparent; color: var(--ink);
  border: 1px solid var(--hair); font-weight: 600;
}
.cta.quiet:hover { border-color: var(--ink); background: transparent; color: var(--ink); }

.specs-row {
  font-family: var(--font-sans);
  display: flex; gap: 2.4rem; flex-wrap: wrap;
  font-size: .72rem; letter-spacing: .02em; color: var(--muted); font-weight: 600;
}
.specs-row b { display: block; color: var(--ink); font-weight: 800; font-size: .92rem; letter-spacing: -0.02em; margin-bottom: .25rem; }

.hero-art { position: absolute; top: 0; right: 0; bottom: 0; width: 58%; z-index: 1; pointer-events: none; }
canvas { display: block; width: 100%; height: 100%; }
.fig {
  position: absolute; z-index: 2; right: 3rem; bottom: 2rem;
  font-family: var(--font-sans); font-size: .68rem; font-weight: 600;
  color: var(--muted); letter-spacing: .04em;
}

/* ---------- section 2 : blueprint (black) ---------- */
.sec-dark {
  background: var(--ink); color: var(--text-on-ink);
  --hair: var(--hair-on-ink);
  --hair-dash: var(--hair-dash-on-ink);
  --muted: var(--muted-on-ink);
  --muted-2: var(--subtle-on-ink);
  position: relative;
}
.sec-dark .frame { padding: 6.5rem 3.5rem 0; }
.eyebrow {
  font-family: var(--font-sans); font-size: .72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .18em; color: var(--muted); margin: 0 0 1.6rem;
}
.sec-dark h2 {
  font-family: var(--font-sans);
  font-size: clamp(1.9rem, 3.2vw, 2.7rem); font-weight: 700;
  letter-spacing: -0.035em; line-height: 1.1;
  max-width: 30ch; margin: 0 0 1rem;
}
.diagram-wrap { display: flex; justify-content: center; padding: 2.5rem 0 3.5rem; }
.diagram-wrap svg { width: min(680px, 90%); height: auto; }
.diagram-wrap [stroke] { stroke: var(--stroke-on-ink); }
.diagram-wrap .lbl-box { fill: var(--text-on-ink); stroke: none; }
.diagram-wrap .lbl-txt { fill: var(--ink); font-family: var(--font-sans); font-size: 11px; font-weight: 600; }
.diagram-wrap .cr { stroke: var(--crimson); }
.dark-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 3rem;
  padding: 3.2rem 0 5.5rem;
}
.dark-row h3 {
  font-family: var(--font-sans); font-weight: 700;
  font-size: 1.55rem; letter-spacing: -0.03em; line-height: 1.22; margin: 0;
  max-width: 20ch;
}
.dark-row .lead { font-size: .98rem; font-weight: 700; margin: 0 0 .8rem; color: var(--text-on-ink); letter-spacing: -0.01em; }
.dark-row p { font-size: .95rem; line-height: 1.7; color: var(--muted); margin: 0; max-width: 46ch; font-weight: 500; }

/* ---------- section 3 : ruled feature table (paper) ---------- */
.sec-table .frame { padding: 6.5rem 3.5rem 0; }
.sec-table h2 {
  font-family: var(--font-sans);
  font-size: clamp(2rem, 3.4vw, 2.9rem); font-weight: 700;
  letter-spacing: -0.04em; line-height: 1.1;
  max-width: 24ch; margin: 0 0 4rem;
}
.trow {
  display: grid; grid-template-columns: 42% 58%;
  border-top: 1px dashed var(--hair-dash);
  padding: 3.6rem 0;
}
.trow:last-of-type { border-bottom: 1px solid var(--hair); }
.trow-title { display: flex; align-items: flex-start; gap: 1rem; padding-right: 2.5rem; }
.trow-title svg { width: 22px; height: 22px; stroke: var(--ink); flex: none; margin-top: .35rem; }
.trow-title h3 {
  font-family: var(--font-sans); font-weight: 700;
  font-size: 1.5rem; letter-spacing: -0.03em; line-height: 1.24; margin: 0;
  max-width: 14ch;
}
.trow-body { border-left: 1px solid var(--hair); padding-left: 3rem; }
.trow-body .lead { font-size: .98rem; font-weight: 700; margin: 0 0 .8rem; letter-spacing: -0.01em; }
.trow-body p { font-size: .95rem; line-height: 1.7; color: var(--muted); margin: 0; max-width: 52ch; font-weight: 500; }

/* ---------- footer strip ---------- */
.foot { border-top: 1px solid var(--hair); margin-top: 5.5rem; }
.foot-inner {
  max-width: var(--frame-w); margin: 0 auto; padding: 1.4rem 3.5rem;
  display: flex; justify-content: space-between;
  font-family: var(--font-sans); font-size: .72rem; color: var(--muted); font-weight: 600;
}
.foot-inner a { color: var(--muted); text-decoration: none; margin-left: 1.6rem; }
.foot-inner a:hover { color: var(--ink); }

/* ---------- reveal on scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity var(--dur-reveal) var(--ease-reveal), transform var(--dur-reveal) var(--ease-reveal); }
.js .reveal.in { opacity: 1; transform: none; }
.js .diagram-wrap path, .js .diagram-wrap line, .js .diagram-wrap polyline {
  stroke-dasharray: 900; stroke-dashoffset: 900;
  transition: stroke-dashoffset var(--dur-draw) ease .2s;
}
.js .diagram-wrap.in path, .js .diagram-wrap.in line, .js .diagram-wrap.in polyline { stroke-dashoffset: 0; }

@media (prefers-reduced-motion: reduce) {
  .js .reveal, .js .diagram-wrap path, .js .diagram-wrap line, .js .diagram-wrap polyline { transition: none; opacity: 1; transform: none; stroke-dashoffset: 0; }
}
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hero-copy { padding-left: 1.5rem; padding-right: 1.5rem; max-width: 100%; }
  .hero-art { width: 100%; opacity: .25; }
  .sec-dark .frame, .sec-table .frame { padding-left: 1.5rem; padding-right: 1.5rem; }
  .dark-row, .trow { grid-template-columns: 1fr; gap: 1.5rem; }
  .trow-body { border-left: 0; padding-left: 0; }
  .foot-inner { padding: 1.2rem 1.5rem; }
}


/* ---------- enhancements (2026-09-13) ---------- */
.nav-links a, .nav-cta { white-space: nowrap; }
@media (max-width: 1100px) { .nav-links { display: none; } }
@media (min-width: 901px) {
  .hero-copy { max-width: 660px; }
  .hero-copy h1, .hero-copy .sub { max-width: 34rem; }
  .specs-row { gap: 1.8rem; }
}