/* Helix landing — editorial system mirrored from the app's light
   (cream paper) palette in lib/design/tokens.ts. Fraunces for
   headlines + italic accents, DM Mono for eyebrows/labels, Inter
   for body. */

:root {
  --bg: #f5f0e6;          /* warm cream paper */
  --bg-card: #ede6d7;
  --bg-elevated: #fffbf2;
  --bg-recessed: #e5dcc9;
  --brand: #8b6914;       /* deep antique brass */
  --ink1: #1a1714;
  --ink2: #544d44;
  --ink3: #857b6e;
  --ink4: #b5aa9c;
  --line: #e0d7c6;
  --line-strong: #cdbfa8;
  --warn: #b91c1c;
  --maxw: 920px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink1);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---- Type ---- */
.eyebrow {
  font-family: 'DM Mono', ui-monospace, monospace;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink3);
}
.serif { font-family: 'Fraunces', Georgia, serif; }
em, .ital { font-family: 'Fraunces', Georgia, serif; font-style: italic; }

h1, h2, h3 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 400;
  color: var(--ink1);
  letter-spacing: -0.02em;
  line-height: 1.1;
}
h1 { font-size: clamp(40px, 7vw, 72px); }
h2 { font-size: clamp(28px, 4.5vw, 40px); }
h3 { font-size: 21px; letter-spacing: -0.01em; }

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

.muted { color: var(--ink2); }
.small { font-size: 14px; color: var(--ink3); }

hr.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }
hr.rule.strong { border-top: 1px solid var(--line-strong); }

/* ---- Header ---- */
header.site {
  position: sticky; top: 0; z-index: 10;
  background: rgba(245, 240, 230, 0.86);
  backdrop-filter: saturate(120%) blur(8px);
  border-bottom: 1px solid var(--line);
}
header.site .bar {
  max-width: var(--maxw); margin: 0 auto; padding: 16px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.wordmark {
  font-family: 'Fraunces', Georgia, serif; font-size: 22px;
  letter-spacing: 0.02em; color: var(--ink1);
}
.wordmark .dot { color: var(--brand); }
header.site nav a {
  font-family: 'DM Mono', monospace; font-size: 12px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink2); margin-left: 22px;
}

/* ---- Hero ---- */
.hero { padding: clamp(56px, 12vw, 120px) 0 clamp(40px, 8vw, 72px); }
.hero h1 { margin: 18px 0 0; max-width: 14ch; }
.hero .sub {
  margin-top: 22px; max-width: 52ch; font-size: 19px; color: var(--ink2);
}
.hero .cta-row { margin-top: 36px; display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }

.btn {
  display: inline-block;
  font-family: 'DM Mono', monospace; font-size: 13px;
  letter-spacing: 0.12em; text-transform: uppercase;
  padding: 15px 26px; border: 1px solid var(--ink1);
  background: var(--ink1); color: var(--bg);
}
.btn:hover { text-decoration: none; opacity: 0.9; }
.btn.secondary { background: transparent; color: var(--ink1); border-color: var(--line-strong); }

/* ---- Sections ---- */
section.block { padding: clamp(48px, 9vw, 88px) 0; }
.section-head { max-width: 56ch; }
.section-head h2 { margin-top: 14px; }
.section-head p { margin-top: 16px; color: var(--ink2); }

.grid {
  margin-top: 44px; display: grid; gap: 1px;
  background: var(--line); border: 1px solid var(--line);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.grid .cell { background: var(--bg); padding: 28px 24px; }
.grid .cell .eyebrow { color: var(--brand); }
.grid .cell h3 { margin: 12px 0 8px; }
.grid .cell p { color: var(--ink2); font-size: 15px; line-height: 1.6; }

/* ---- Founder strip ---- */
.founder {
  margin-top: 0; background: var(--bg-recessed);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}
.founder .wrap { padding-top: clamp(48px, 8vw, 72px); padding-bottom: clamp(48px, 8vw, 72px); }
.founder h2 { max-width: 18ch; }
.founder p { margin-top: 16px; max-width: 52ch; color: var(--ink2); }

/* ---- Disclaimer band ---- */
.disclaimer-band {
  background: var(--ink1); color: var(--bg);
}
.disclaimer-band .wrap { padding: 28px 24px; }
.disclaimer-band .eyebrow { color: var(--brand); }
.disclaimer-band p { margin-top: 10px; color: #e8e1d4; font-size: 14px; line-height: 1.65; max-width: 76ch; }

/* ---- Footer ---- */
footer.site { padding: 48px 0 64px; border-top: 1px solid var(--line); }
footer.site .cols { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 24px; }
footer.site nav a {
  font-family: 'DM Mono', monospace; font-size: 12px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink2); display: block; margin-bottom: 10px;
}
footer.site .legal { color: var(--ink3); font-size: 13px; margin-top: 28px; max-width: 70ch; }

/* ---- Legal / doc pages ---- */
.doc { padding: clamp(40px, 7vw, 72px) 0 96px; }
.doc .eyebrow { color: var(--brand); }
.doc h1 { margin: 14px 0 6px; font-size: clamp(34px, 5.5vw, 52px); }
.doc .updated { font-family: 'DM Mono', monospace; font-size: 12px; letter-spacing: 0.1em; color: var(--ink3); text-transform: uppercase; }
.doc .body { margin-top: 36px; max-width: 70ch; }
.doc .body h2 { font-size: 24px; margin: 38px 0 12px; }
.doc .body h3 { margin: 26px 0 8px; }
.doc .body p { margin: 12px 0; color: var(--ink2); }
.doc .body ul { margin: 12px 0 12px 22px; color: var(--ink2); }
.doc .body li { margin: 7px 0; }
.doc .body strong { color: var(--ink1); }
.doc .back { font-family: 'DM Mono', monospace; font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; }
.doc .callout {
  margin: 24px 0; padding: 18px 20px; background: var(--bg-card);
  border-left: 2px solid var(--brand); font-size: 15px; color: var(--ink2);
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  header.site nav a:not(.signin) { display: none; }
}