/* ─── FARRINGTON DEVELOPMENT — design system ───────────────── */
:root {
  --ink: #0A0B0D;
  --ink-2: #111217;
  --ink-3: #1A1C22;
  --line: #24262E;
  --line-2: #33363F;
  --paper: #F5F1EA;
  --paper-dim: #C9C3B6;
  --mute: #6B6F78;
  --amber: #FFB547;
  --amber-glow: #FFB54733;
  --cyan: #7EE3F5;
  --red: #FF5A4E;
  --green: #8AE6A8;

  --serif: "Instrument Serif", "Cormorant Garamond", ui-serif, Georgia, serif;
  --sans: "Inter Tight", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius: 4px;
  --max: 1440px;
  --gutter: clamp(20px, 3vw, 48px);

  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { background: var(--ink); }
body {
  font-family: var(--sans);
  color: var(--paper);
  background: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
  overflow-x: hidden;
}

/* grain overlay */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: .06;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* ─── TYPE ─── */
.display {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 0.92;
  font-size: clamp(48px, 9.5vw, 168px);
}
.display em {
  font-style: italic;
  color: var(--paper-dim);
}
h1, h2, h3, h4 { margin: 0; font-weight: 400; }
h2.section-title {
  font-family: var(--serif);
  font-size: clamp(40px, 6vw, 96px);
  line-height: 0.95;
  letter-spacing: -0.02em;
}
h3 {
  font-family: var(--sans);
  font-size: clamp(20px, 1.6vw, 28px);
  font-weight: 500;
  letter-spacing: -0.01em;
}
p { margin: 0; line-height: 1.5; }
.lead {
  font-family: var(--sans);
  font-size: clamp(18px, 1.4vw, 22px);
  line-height: 1.45;
  color: var(--paper-dim);
  max-width: 62ch;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--amber);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--amber);
}
.mono { font-family: var(--mono); font-size: 12px; letter-spacing: 0.02em; color: var(--mute); }
.mono.paper { color: var(--paper-dim); }

/* ─── LAYOUT ─── */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.rule { height: 1px; background: var(--line); width: 100%; }

/* ─── NAV ─── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
  background: color-mix(in oklab, var(--ink) 80%, transparent);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-bottom: 1px solid var(--line);
  transition: background .3s;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; color: var(--paper);
  cursor: pointer;
}
.brand-mark {
  width: 32px; height: 32px;
  border: 1px solid var(--paper);
  display: grid; place-items: center;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  background: var(--ink);
  position: relative;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 3px;
  border: 1px solid var(--amber);
  opacity: 0;
  transition: opacity .3s;
}
.brand:hover .brand-mark::after { opacity: 1; }
.brand-name {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.02em;
}
.brand-name span { color: var(--mute); }

.nav-links {
  display: flex; gap: 28px; align-items: center;
}
.nav-links a {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--paper-dim);
  text-decoration: none;
  transition: color .2s;
  position: relative;
  padding: 6px 0;
  cursor: pointer;
}
.nav-links a:hover { color: var(--paper); }
.nav-links a.active { color: var(--paper); }
.nav-links a.active::after {
  content: ""; position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px; background: var(--amber);
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--paper);
  cursor: pointer;
  transition: all .25s;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: "";
  position: absolute; inset: 0;
  background: var(--amber);
  transform: translateY(100%);
  transition: transform .3s ease;
  z-index: 0;
}
.btn:hover::before { transform: translateY(0); }
.btn > * { position: relative; z-index: 1; }
.btn .arrow { transition: transform .3s; }
.btn:hover .arrow { transform: translate(4px, -2px); }

.btn.ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--line-2);
}
.btn.ghost::before { background: var(--paper); }
.btn.ghost:hover { color: var(--ink); }

/* ─── HERO GRID BG ─── */
.grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 0%, transparent 70%);
  opacity: 0.5;
  pointer-events: none;
}

/* ─── CURSOR GLOW ─── */
.glow {
  position: fixed;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--amber-glow) 0%, transparent 60%);
  pointer-events: none;
  z-index: 1;
  transform: translate(-50%, -50%);
  transition: opacity .4s;
  opacity: 0;
  filter: blur(30px);
  mix-blend-mode: screen;
}
body.ready .glow { opacity: 1; }

/* ─── CARDS ─── */
.card {
  background: var(--ink-2);
  border: 1px solid var(--line);
  padding: 32px;
  position: relative;
  transition: border-color .3s, transform .3s;
}
.card:hover { border-color: var(--line-2); }
.card-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--mute);
  letter-spacing: 0.1em;
}

/* ─── MARQUEE ─── */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 28px 0;
  white-space: nowrap;
  background: var(--ink);
}
.marquee-track {
  display: inline-flex;
  gap: 60px;
  animation: slide 40s linear infinite;
  font-family: var(--serif);
  font-size: clamp(32px, 4vw, 56px);
  font-style: italic;
  color: var(--paper);
  letter-spacing: -0.02em;
}
.marquee-track span.dot {
  color: var(--amber);
  font-family: var(--sans);
  font-style: normal;
}
@keyframes slide {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ─── REVEAL ─── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1);
}
.reveal.on { opacity: 1; transform: none; }

/* ─── UTIL ─── */
.row { display: flex; gap: 16px; flex-wrap: wrap; }
.between { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.stack-sm > * + * { margin-top: 12px; }
.stack > * + * { margin-top: 24px; }
.stack-lg > * + * { margin-top: 48px; }

.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 10px;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--paper-dim);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--ink-2);
}
.chip .status { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); }

/* ─── FOOTER ─── */
footer {
  border-top: 1px solid var(--line);
  padding: 80px var(--gutter) 40px;
  background: var(--ink);
  margin-top: 120px;
}
footer .display-foot {
  font-family: var(--serif);
  font-size: clamp(60px, 14vw, 240px);
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: var(--paper);
  margin-bottom: 60px;
}
footer .display-foot em { color: var(--paper-dim); font-style: italic; }
footer .foot-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
footer .foot-col h4 {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mute);
  margin-bottom: 16px;
}
footer .foot-col a {
  display: block;
  font-family: var(--sans);
  font-size: 14px;
  color: var(--paper-dim);
  text-decoration: none;
  padding: 4px 0;
  cursor: pointer;
}
footer .foot-col a:hover { color: var(--amber); }
footer .foot-bottom {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between;
  font-family: var(--mono); font-size: 11px;
  color: var(--mute);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ─── MOBILE NAV TOGGLE ─── */
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line-2);
  color: var(--paper);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: border-color .2s;
}
.nav-toggle:hover { border-color: var(--paper); }
.nav-toggle span {
  display: block;
  width: 18px; height: 1px;
  background: var(--paper);
  transition: transform .25s, opacity .25s;
}
.nav.open .nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav.open .nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: fixed;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px var(--gutter) 24px;
    background: color-mix(in oklab, var(--ink) 96%, transparent);
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    border-bottom: 1px solid var(--line);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transition: transform .25s ease, opacity .2s ease, visibility 0s linear .25s;
  }
  .nav.open .nav-links {
    display: flex;
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
    transition: transform .25s ease, opacity .2s ease, visibility 0s;
  }
  .nav-links a {
    padding: 16px 0;
    font-size: 13px;
    border-bottom: 1px solid var(--line);
  }
  .nav-links a:last-child { border-bottom: none; }
  footer .foot-grid { grid-template-columns: 1fr 1fr; }
}