/* foureightyone — shared styles */

@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..72,300;1,6..72,400&family=Instrument+Sans:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --paper: #F3EDE3;
  --paper-soft: #EBE3D5;
  --paper-deep: #DED3BF;
  --ink: #1C1A16;
  --ink-soft: #3B3832;
  --ink-muted: #6B6558;
  --terracotta: #B85738;
  --terracotta-soft: #D47A5C;
  --moss: #5F6B42;
  --clay: #C89968;
  --line: rgba(28, 26, 22, 0.14);
  --line-soft: rgba(28, 26, 22, 0.08);

  --serif: 'Newsreader', ui-serif, Georgia, serif;
  --sans: 'Instrument Sans', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

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

html, body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  position: relative;
}

/* Subtle grain for paper feel */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: 0.35;
  mix-blend-mode: multiply;
  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='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.1  0 0 0 0 0.1  0 0 0 0 0.08  0 0 0 0.08 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

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

/* ---- Navigation ---- */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 40px;
  mix-blend-mode: multiply;
  transition: background 0.4s var(--ease-out);
}
.site-nav.scrolled {
  background: rgba(243, 237, 227, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  mix-blend-mode: normal;
  border-bottom: 1px solid var(--line-soft);
}
.brand {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 22px;
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.brand .num {
  font-variant-numeric: oldstyle-nums;
  font-style: italic;
}
.brand .dot {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--terracotta);
  border-radius: 50%;
  transform: translateY(-3px);
}
.nav-links {
  display: flex;
  gap: 36px;
  font-family: var(--sans);
  font-size: 14px;
  letter-spacing: 0.02em;
}
.nav-links a {
  position: relative;
  padding: 4px 0;
  color: var(--ink-soft);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--terracotta);
}

/* ---- Type ---- */
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--terracotta);
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.02;
  color: var(--ink);
  text-wrap: balance;
}

.display {
  font-size: clamp(56px, 10vw, 148px);
  line-height: 0.95;
  letter-spacing: -0.035em;
}
.display em {
  font-style: italic;
  font-weight: 300;
  color: var(--terracotta);
}

h2.section-title {
  font-size: clamp(40px, 6vw, 80px);
  letter-spacing: -0.025em;
}

.lead {
  font-size: clamp(18px, 1.4vw, 22px);
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 56ch;
  text-wrap: pretty;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: 100px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  background: none;
}
.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover {
  background: var(--terracotta);
  transform: translateY(-1px);
}
.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
}
.btn-ghost:hover {
  border-color: var(--ink);
  background: var(--paper-soft);
}
.btn .arrow {
  display: inline-block;
  transition: transform 0.3s var(--ease-out);
}
.btn:hover .arrow { transform: translateX(4px); }

/* ---- Layout helpers ---- */
.container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 40px;
}
.container-narrow {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 40px;
}
section { position: relative; }

/* ---- Reveal animations ---- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
  transition-delay: var(--delay, 0ms);
}
.reveal.in { opacity: 1; transform: translateY(0); }

.reveal-up {
  opacity: 0;
  transform: translateY(64px);
  transition: opacity 1.1s var(--ease-out), transform 1.1s var(--ease-out);
  transition-delay: var(--delay, 0ms);
}
.reveal-up.in { opacity: 1; transform: translateY(0); }

.reveal-rotate {
  opacity: 0;
  transform: perspective(1200px) rotateX(18deg) translateY(60px);
  transform-origin: center bottom;
  transition: opacity 1.2s var(--ease-out), transform 1.2s var(--ease-out);
  transition-delay: var(--delay, 0ms);
}
.reveal-rotate.in {
  opacity: 1;
  transform: perspective(1200px) rotateX(0deg) translateY(0);
}

.char {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.6em);
  transition: opacity 0.8s var(--ease-out), transform 0.9s var(--ease-out);
  transition-delay: calc(var(--i, 0) * 22ms);
}
.char.in { opacity: 1; transform: translateY(0); }

/* ---- Footer ---- */
.site-footer {
  position: relative;
  margin-top: 160px;
  padding: 80px 40px 40px;
  border-top: 1px solid var(--line);
  background: var(--paper-soft);
}
.footer-grid {
  max-width: 1360px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--line-soft);
}
.footer-brand h3 {
  font-family: var(--serif);
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 300;
  font-style: italic;
  letter-spacing: -0.02em;
  line-height: 1;
}
.footer-brand p {
  margin-top: 16px;
  color: var(--ink-muted);
  max-width: 40ch;
  font-size: 15px;
}
.footer-col h5 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 18px;
  font-weight: 500;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 15px; color: var(--ink-soft); transition: color 0.2s; }
.footer-col a:hover { color: var(--terracotta); }
.footer-bottom {
  max-width: 1360px;
  margin: 30px auto 0;
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-muted);
  letter-spacing: 0.06em;
}

/* ---- Floating geometry (background) ---- */
.geo-field {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.geo {
  position: absolute;
  will-change: transform;
}
.geo-ring {
  border-radius: 50%;
  border: 1px solid var(--line);
}
.geo-disc {
  border-radius: 50%;
  background: var(--terracotta);
  opacity: 0.85;
}
.geo-square {
  border: 1px solid var(--line);
}
.geo-cross {
  color: var(--ink-muted);
  font-family: var(--serif);
}

/* utility */
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

@media (max-width: 860px) {
  .site-nav { padding: 18px 22px; }
  .nav-links { gap: 20px; }
  .container, .container-narrow { padding: 0 22px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-brand { grid-column: 1 / -1; }
}