/* Nyansapo — shared stylesheet
   Aesthetic: warm-earth intelligence terminal meets editorial
*/

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,300;0,6..72,400;0,6..72,500;0,6..72,600;1,6..72,400&family=Inter+Tight:wght@300;400;500;600&family=JetBrains+Mono:wght@300;400;500&display=swap');

:root {
  --bg:        #1f1813;
  --bg-rise:   #261e17;
  --bg-deep:   #120e0a;
  --fg:        #f5ecd9;
  --fg-mute:   #c4b59a;
  --fg-dim:    #8a7c66;
  --rule:      #2e2620;
  --rule-2:    #3d342b;
  --copper:    #e8d3a8;
  --copper-2:  #c4ab84;
  --signal:    #f5e2b6;
  --alert:     #d4673a;
  --ok:        #a8c498;

  --serif: "Newsreader", Georgia, serif;
  --sans:  "Inter Tight", system-ui, sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, monospace;

  --pad-x: clamp(20px, 4vw, 80px);
  --maxw: 1440px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--bg); color: var(--fg); }
body {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* — Background grain & subtle paper texture — */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background-image:
    radial-gradient(circle at 20% 10%, rgba(200, 133, 74, 0.04) 0, transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(200, 133, 74, 0.03) 0, transparent 40%);
}

.grain::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  opacity: 0.04;
  z-index: 2;
  background-image: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0naHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmcnIHdpZHRoPScyMDAnIGhlaWdodD0nMjAwJz48ZmlsdGVyIGlkPSduJz48ZmVUdXJidWxlbmNlIHR5cGU9J2ZyYWN0YWxOb2lzZScgYmFzZUZyZXF1ZW5jeT0nMC45JyBudW1PY3RhdmVzPScyJy8+PC9maWx0ZXI+PHJlY3Qgd2lkdGg9JzEwMCUnIGhlaWdodD0nMTAwJScgZmlsdGVyPSd1cmwoJTIzbiknIG9wYWNpdHk9JzAuNTUnLz48L3N2Zz4=");
  mix-blend-mode: overlay;
}

/* — Typography — */
.serif { font-family: var(--serif); font-weight: 400; }
.mono  { font-family: var(--mono); font-weight: 400; letter-spacing: 0.02em; }
.uppercase { text-transform: uppercase; letter-spacing: 0.18em; }

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; letter-spacing: -0.01em; line-height: 1.05; }
.display {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(56px, 9vw, 144px);
  line-height: 0.95;
  letter-spacing: -0.025em;
}
.display em {
  font-style: italic;
  font-weight: 400;
  color: var(--copper);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--fg-mute);
}

/* — Layout primitives — */
.section { position: relative; padding: clamp(80px, 12vh, 160px) var(--pad-x); }
.section.tight { padding-block: clamp(48px, 7vh, 80px); }
.bound { max-width: var(--maxw); margin: 0 auto; }

.hairline { height: 1px; background: var(--rule); width: 100%; }
.hairline.copper { background: linear-gradient(90deg, var(--copper) 0, var(--copper) 80px, var(--rule) 80px); }

/* — Coordinate margin labels — */
.coord {
  position: absolute;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--fg-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  z-index: 3;
}

/* — Top nav — */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px var(--pad-x);
  background: linear-gradient(to bottom, rgba(18, 14, 10, 0.92), rgba(18, 14, 10, 0.6) 70%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s, background 0.4s;
}
.nav.solid {
  background: rgba(18, 14, 10, 0.95);
  border-bottom-color: var(--rule);
}
.nav-brand { display: flex; align-items: center; gap: 12px; font-family: var(--serif); font-size: 18px; letter-spacing: -0.01em; }
.nav-brand .mark { width: 22px; height: 22px; }
.nav-links { display: flex; gap: 36px; align-items: center; }
.nav-links a {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--fg-mute);
  transition: color 0.2s;
  position: relative;
  padding: 6px 0;
}
.nav-links a:hover, .nav-links a.active { color: var(--fg); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: var(--copper);
}
@media (max-width: 760px) { .nav-links { display: none; } }

/* — Buttons — */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  border: 1px solid var(--rule-2);
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  transition: all 0.25s ease;
}
.btn:hover { border-color: var(--copper); color: var(--copper); }
.btn-primary {
  background: var(--copper);
  border-color: var(--copper);
  color: var(--bg-deep);
}
.btn-primary:hover {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--bg-deep);
}
.btn .arrow { display: inline-block; transition: transform 0.25s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* — Tag chips — */
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 10px;
  border: 1px solid var(--rule-2);
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--fg-mute);
}
.chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--copper); }
.chip.live .dot { background: var(--signal); animation: pulse 1.6s infinite; }
.chip.future { color: var(--copper); border-color: var(--copper-2); }

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.4); }
}

/* — Cards (product modules) — */
.module {
  position: relative;
  padding: 36px 32px 64px;
  border: 1px solid var(--rule);
  background: var(--bg-rise);
  transition: border-color 0.3s, transform 0.3s;
  cursor: pointer;
  overflow: hidden;
}
.module::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 2px; background: transparent;
  transition: background 0.3s;
}
.module:hover { border-color: var(--copper-2); }
.module:hover::before { background: var(--copper); }
.module .module-head {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 28px;
}
.module .module-num {
  font-family: var(--mono); font-size: 10px; color: var(--fg-dim);
  letter-spacing: 0.18em;
}
.module h3 {
  font-size: clamp(28px, 3vw, 40px);
  margin: 16px 0 12px;
}
.module p { color: var(--fg-mute); max-width: 50ch; }

/* — Footer — */
.footer {
  border-top: 1px solid var(--rule);
  padding: 60px var(--pad-x) 40px;
  background: var(--bg-deep);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; max-width: var(--maxw); margin: 0 auto; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer h5 { font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.2em; color: var(--fg-dim); margin-bottom: 16px; font-weight: 400; }
.footer ul { list-style: none; }
.footer li { margin-bottom: 8px; font-size: 13px; color: var(--fg-mute); }
.footer li a:hover { color: var(--copper); }
.footer-bottom {
  margin-top: 60px; padding-top: 24px; border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between; max-width: var(--maxw); margin-left: auto; margin-right: auto;
  font-family: var(--mono); font-size: 10px; color: var(--fg-dim); letter-spacing: 0.16em; text-transform: uppercase;
}

/* — Page wrappers — */
.page-content { position: relative; z-index: 5; }
.subpage-hero { padding-top: 140px; padding-bottom: 80px; }
.subpage-hero h1 { font-size: clamp(48px, 7vw, 96px); font-weight: 300; letter-spacing: -0.025em; }
.subpage-hero .lede { font-family: var(--serif); font-size: clamp(20px, 2vw, 28px); color: var(--fg-mute); max-width: 60ch; line-height: 1.4; margin-top: 28px; }

/* Utility */
.row { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.muted { color: var(--fg-mute); }
.dim { color: var(--fg-dim); }

/* Two-column reading layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}
@media (max-width: 880px) { .two-col { grid-template-columns: 1fr; } }