/* ============================================================
   Threeqa shared design system
   Used by all subpages. Edit here to update tokens globally.
   ============================================================ */

:root {
  /* Surfaces */
  --bg: #FBFAF7;
  --paper: #F5F3EE;
  --paper-2: #EDEAE2;
  --paper-3: #E4E0D6;
  --line: #D8D3C7;
  --line-soft: #E8E4D9;
  --white: #ffffff;

  /* Ink */
  --ink: #0E1116;
  --ink-2: #2A2F38;
  --ink-3: #4A5260;
  --ink-4: #6E7684;
  --ink-5: #9099A6;

  /* Brand */
  --accent: #1A8CFE;
  --accent-2: #0E73E0;
  --accent-soft: #DAE7FF;
  --blue: #1A8CFE;
  --blue-deep: #0C63C9;
  --blue-soft: #E2EBFF;
  --jade: #00A86B;
  --jade-soft: #DDF1E6;
  --amber: #C77800;
  --amber-soft: #FFF1D8;
  --rose: #C0274F;
  --rose-soft: #FBE0E6;

  /* Effects */
  --shadow-1: 0 1px 0 rgba(14,17,22,0.04), 0 1px 2px rgba(14,17,22,0.05);
  --shadow-2: 0 1px 0 rgba(14,17,22,0.04), 0 8px 24px -4px rgba(14,17,22,0.10);
  --shadow-3: 0 1px 0 rgba(14,17,22,0.04), 0 12px 32px -8px rgba(14,17,22,0.14), 0 32px 64px -16px rgba(14,17,22,0.20);

  --r-sm: 8px;
  --r: 12px;
  --r-lg: 18px;
  --r-xl: 28px;
}

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

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}
body { padding-top: 64px; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: 0; background: none; }

.wrap { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.wrap-narrow { max-width: 1040px; margin: 0 auto; padding: 0 32px; }
.wrap-article { max-width: 760px; margin: 0 auto; padding: 0 32px; }

.mono { font-family: 'JetBrains Mono', monospace; }

h1, h2, h3, h4 {
  font-family: 'Inter', sans-serif;
  color: var(--ink);
  letter-spacing: -0.025em;
  line-height: 1.08;
  font-weight: 600;
}
h1 { font-size: 64px; font-weight: 600; letter-spacing: -0.04em; line-height: 1.04; }
h2 { font-size: 40px; letter-spacing: -0.03em; }
h3 { font-size: 22px; line-height: 1.25; letter-spacing: -0.02em; font-weight: 600; }
h4 { font-size: 17px; line-height: 1.3; letter-spacing: -0.015em; font-weight: 600; }
p { color: var(--ink-3); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-4);
}
.eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
}
.lead {
  font-size: 18px; line-height: 1.55; color: var(--ink-3);
}
/* Heading emphasis renders as plain heading text (no serif/italic/colour accent) */
h1 em, h2 em, h3 em, .serif-accent {
  font-style: normal;
  font-family: inherit;
  color: inherit;
  font-weight: inherit;
  letter-spacing: inherit;
}

/* ============== BUTTONS ============== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
  line-height: 1;
  white-space: nowrap;
}
.btn .arr { width: 12px; height: 12px; display: inline-flex; }
.btn-primary { background: var(--ink); color: white; }
.btn-primary:hover { background: #1c2230; }
.btn-accent {
  background: var(--accent); color: white;
  box-shadow: 0 1px 0 rgba(0,0,0,0.06), 0 2px 6px -2px rgba(26,140,254,0.25);
}
.btn-accent:hover {
  background: var(--accent-2);
  transform: translateY(-1px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06), 0 6px 16px -6px rgba(26,140,254,0.35);
}
.btn-ghost { background: transparent; color: var(--ink-2); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }
.btn-light {
  background: var(--white); color: var(--ink);
  border: 1px solid var(--line); box-shadow: var(--shadow-1);
}
.btn-light:hover { transform: translateY(-1px); box-shadow: var(--shadow-2); }
.btn-on-dark { background: white; color: var(--ink); }
.btn-on-dark:hover {
  color: var(--accent-2);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -8px rgba(0,0,0,0.40);
}
.btn-on-dark-ghost { background: transparent; color: rgba(255,255,255,0.85); border: 1px solid rgba(255,255,255,0.20); }
.btn-on-dark-ghost:hover { border-color: white; color: white; }
.btn-sm { padding: 8px 14px; font-size: 13px; }

/* ============== NAV ============== */
nav.top {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(251,250,247,0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; padding-bottom: 14px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 600; font-size: 18px; color: var(--ink); letter-spacing: -0.02em;
}
.logo-mark { width: 26px; height: 26px; object-fit: contain; }
.nav-center { display: flex; gap: 4px; font-size: 14px; color: var(--ink-3); }
.nav-center a {
  padding: 8px 14px; border-radius: 6px; font-weight: 500;
  transition: background 0.15s, color 0.15s;
  display: inline-flex; align-items: center; gap: 6px;
}
.nav-center a:hover { background: var(--paper-2); color: var(--ink); }
.nav-center a.active { color: var(--ink); background: var(--paper-2); }
.nav-actions { display: flex; gap: 8px; align-items: center; }

/* ============== PAGE HERO (subpages) ============== */
.page-hero {
  padding: 64px 0 48px;
  background: var(--bg);
  position: relative;
}
.page-hero .crumb {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 18px;
  display: flex; gap: 8px; align-items: center;
}
.page-hero .crumb a:hover { color: var(--ink); }
.page-hero h1 { max-width: 22ch; margin-bottom: 20px; }
.page-hero .lead { max-width: 60ch; }

/* ============== SECTION SHELL ============== */
.section { padding: 96px 0; }
.section-tight { padding: 64px 0; }
.section.paper { background: var(--paper); border-top: 1px solid var(--line-soft); }
.section.ink { background: var(--ink); color: white; }
.section.ink h1, .section.ink h2, .section.ink h3 { color: white; }
.section.ink p { color: rgba(255,255,255,0.65); }

.sec-head { max-width: 720px; margin-bottom: 56px; }
.sec-head .eyebrow { margin-bottom: 16px; }
.sec-head h2 { margin-bottom: 16px; }

/* ============== CARD PRIMITIVES ============== */
.card {
  background: white;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  padding: 28px;
}
.card-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 14px;
}
.card h3 { margin-bottom: 10px; }
.card p { font-size: 14px; line-height: 1.6; }

/* ============== FOOTER ============== */
footer {
  background: var(--ink);
  color: rgba(255,255,255,0.6);
  padding: 64px 0 28px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.foot-top {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr 1fr;
  gap: 56px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
footer .logo { color: white; font-size: 20px; }
footer .blurb { font-size: 13px; color: rgba(255,255,255,0.55); line-height: 1.55; margin: 18px 0 22px; }
footer .addr { font-size: 12px; line-height: 1.7; color: rgba(255,255,255,0.55); font-family: 'JetBrains Mono', monospace; }
footer .addr strong { color: white; font-weight: 600; }
footer .addr a { color: var(--accent); }
footer .foot-col h5 {
  font-size: 11px; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: rgba(255,255,255,0.55);
  margin-bottom: 18px; font-family: 'JetBrains Mono', monospace;
}
footer .foot-col a { display: block; font-size: 13px; color: rgba(255,255,255,0.65); padding: 5px 0; transition: color 0.18s; }
footer .foot-col a:hover { color: white; }

.foot-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 28px; font-size: 12px; color: rgba(255,255,255,0.45);
  font-family: 'JetBrains Mono', monospace;
  flex-wrap: wrap; gap: 16px;
}
.foot-bottom .links { display: flex; gap: 24px; flex-wrap: wrap; }
.foot-bottom .links a:hover { color: white; }
.foot-bottom .badges { display: flex; gap: 12px; align-items: center; }
.foot-bottom .badges .b {
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  color: rgba(255,255,255,0.6); display: inline-flex; align-items: center; gap: 6px;
  letter-spacing: 0.06em; text-transform: uppercase;
}
.foot-bottom .badges .b.live::before {
  content: ""; display: inline-block; width: 6px; height: 6px;
  border-radius: 50%; background: var(--jade);
  box-shadow: 0 0 0 3px rgba(0,168,107,0.18);
}

/* ============== FINAL CTA ============== */
.final-cta {
  background: var(--ink); color: white;
  padding: 88px 0; text-align: left;
}
.final-cta h2 { color: white; max-width: 22ch; margin-bottom: 20px; }
.final-cta p { color: rgba(255,255,255,0.65); font-size: 17px; max-width: 56ch; margin-bottom: 32px; }
.final-cta .ctas { display: flex; gap: 10px; flex-wrap: wrap; }

/* ============== RESPONSIVE ============== */
@media (max-width: 980px) {
  h1 { font-size: 44px; }
  h2 { font-size: 32px; }
  .nav-center { display: none; }
  .foot-top { grid-template-columns: 1fr; gap: 32px; }
  .section { padding: 64px 0; }
}