/* ============================================
   DIANA SIMPSON HERNANDEZ — DESIGN SYSTEM
   Editorial · Minimal · AI-Native
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;1,9..144,400&family=Inter+Tight:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter Tight', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --paper: #f6f4ef;
  --paper-warm: #efece4;
  --ink: #1a1a1a;
  --ink-soft: #2c2c2c;
  --muted: #6b6b6b;
  --rule: #d8d4ca;
  --rule-soft: #e8e4d9;
  --accent: #c8462c;
  --accent-soft: #f0d6cc;

  --max-w: 1280px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(200,70,44,0.04), transparent 60%),
    radial-gradient(ellipse 60% 40% at 90% 110%, rgba(200,70,44,0.03), transparent 60%);
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.4;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0.1, 0 0 0 0 0.1, 0 0 0 0 0.1, 0 0 0 0.05 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

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

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  z-index: 2;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.lede {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.25rem, 2.2vw, 1.6rem);
  line-height: 1.35;
  font-style: italic;
  color: var(--ink-soft);
}

/* NAV */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(246, 244, 239, 0.78);
  border-bottom: 1px solid var(--rule-soft);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem var(--gutter);
  max-width: var(--max-w);
  margin: 0 auto;
}
.nav-mark {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.nav-mark span { font-style: italic; color: var(--accent); }
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-size: 14px;
  color: var(--ink-soft);
  position: relative;
  transition: color 0.2s var(--ease);
}
.nav-links a:hover { color: var(--accent); }
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s var(--ease);
}
.nav-links a:hover::after { width: 100%; }
@media (max-width: 720px) {
  .nav-links { display: none; }
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: all 0.25s var(--ease);
  font-family: var(--font-body);
}
.btn:hover {
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
}
.btn .arrow { transition: transform 0.25s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* FOOTER */
.footer {
  margin-top: 8rem;
  padding: 4rem 0 3rem;
  border-top: 1px solid var(--rule);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
}
@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
.footer h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}
.footer ul { list-style: none; }
.footer li { margin-bottom: 0.6rem; font-size: 14px; }
.footer a { color: var(--ink-soft); transition: color 0.2s; }
.footer a:hover { color: var(--accent); }
.footer-mark {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.footer-mark span { font-style: italic; color: var(--accent); }
.footer-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* ANIMATIONS */
@keyframes rise {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal { opacity: 0; animation: rise 0.9s var(--ease) forwards; }
.reveal-1 { animation-delay: 0.05s; }
.reveal-2 { animation-delay: 0.18s; }
.reveal-3 { animation-delay: 0.32s; }
.reveal-4 { animation-delay: 0.46s; }
.reveal-5 { animation-delay: 0.6s; }

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.fade-up.in-view {
  opacity: 1;
  transform: translateY(0);
}

::selection { background: var(--accent); color: var(--paper); }