/* ============================================================
   Babiology — Site-wide layout & primitives
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-text);
  font-size: var(--t-base);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern", "liga", "calt";
  transition: background-color 0.4s var(--ease), color 0.4s var(--ease);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* ----------------------------------------------------------
   Layout primitives
   ---------------------------------------------------------- */
.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--content-pad);
}
.container-wide {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 var(--content-pad);
}

.section { padding: var(--s-10) 0; }
.section-sm { padding: var(--s-9) 0; }
.section-lg { padding: var(--s-11) 0; }

.section.is-sunk { background: var(--bg-sunk); }
.section.is-dark {
  background: var(--bg-dark);
  color: var(--fg-on-dark);
}
.section.is-dark .muted { color: var(--fg-on-dark-muted); }
.section.is-dark .rule, .section.is-dark hr { border-color: var(--rule-on-dark) !important; }

/* ----------------------------------------------------------
   Type
   ---------------------------------------------------------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tr-caps);
  text-transform: uppercase;
  color: var(--fg-muted);
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}
.eyebrow.is-plain::before { display: none; }
.eyebrow .num { color: var(--accent); }

.display {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: var(--tr-display);
  margin: 0;
}
.display .ital { font-style: italic; font-weight: 400; color: var(--accent); }

.h-xl { font-size: clamp(60px, 9vw, 132px); }
.h-lg { font-size: clamp(48px, 6vw, 92px); }
.h-md { font-size: clamp(36px, 4.2vw, 64px); }
.h-sm { font-size: clamp(28px, 3vw, 42px); }
.h-xs { font-size: clamp(22px, 2vw, 30px); line-height: 1.18; }

.lede {
  font-family: var(--font-serif);
  font-size: clamp(20px, 1.7vw, 26px);
  line-height: 1.45;
  color: var(--fg-muted);
  max-width: 56ch;
  font-style: italic;
  font-weight: 400;
}

.body {
  font-size: var(--t-md);
  line-height: 1.65;
  max-width: 62ch;
}
.body.muted { color: var(--fg-muted); }

.muted { color: var(--fg-muted); }
.faint { color: var(--fg-faint); }

.cn { font-family: var(--font-text); }

/* ----------------------------------------------------------
   Buttons
   ---------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px;
  border: 1px solid currentColor;
  background: transparent;
  color: var(--fg);
  font-family: var(--font-text);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: 999px;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
  text-transform: uppercase;
}
.btn:hover { background: var(--fg); color: var(--bg); }
.btn .arrow { display: inline-block; transition: transform 0.25s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.btn.is-solid {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn.is-solid:hover { background: var(--accent-2); border-color: var(--accent-2); }

.btn.is-ghost { border-color: var(--rule); color: var(--fg-muted); }
.btn.is-ghost:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

/* Underlined text link */
.link-u {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 4px;
  border-bottom: 1px solid currentColor;
  font-family: var(--font-text);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.link-u .arrow { transition: transform 0.25s var(--ease); }
.link-u:hover .arrow { transform: translateX(3px); }

/* ----------------------------------------------------------
   Navigation
   ---------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease);
}
.nav .container-wide {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 32px;
  width: 100%;
}
.nav-left, .nav-right {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav-right { justify-content: flex-end; }
.nav-link {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--fg);
  position: relative;
  padding: 4px 0;
}
.nav-link:hover { color: var(--accent); }
.nav-link.is-active::after {
  content: "";
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: center;
}
.nav-brand img { width: 36px; height: 36px; }
.nav-brand .name {
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: 0.02em;
  font-weight: 500;
  color: var(--fg);
}
.nav-cta {
  font-family: var(--font-text);
  font-size: 12px;
  letter-spacing: var(--tr-caps);
  text-transform: uppercase;
  border: 1px solid var(--fg);
  color: var(--fg);
  padding: 10px 18px;
  border-radius: 999px;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}
.nav-cta:hover { background: var(--fg); color: var(--bg); }

/* ----------------------------------------------------------
   Footer
   ---------------------------------------------------------- */
.footer {
  background: var(--bg-dark);
  color: var(--fg-on-dark);
  padding: var(--s-10) 0 var(--s-7);
}
.footer a { color: var(--fg-on-dark); }
.footer a:hover { color: var(--rose); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 64px;
  padding-bottom: var(--s-9);
  border-bottom: 1px solid var(--rule-on-dark);
}
.footer .lead {
  font-family: var(--font-display);
  font-size: clamp(32px, 3vw, 48px);
  line-height: 1.05;
  letter-spacing: var(--tr-display);
  margin: 0 0 24px;
  max-width: 16ch;
}
.footer .lead .ital { font-style: italic; color: var(--rose); }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tr-caps);
  text-transform: uppercase;
  font-weight: 400;
  color: var(--fg-on-dark-muted);
  margin: 0 0 20px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 10px; font-size: 14px; }
.footer-bottom {
  padding-top: var(--s-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-on-dark-muted);
}

/* ----------------------------------------------------------
   Image placeholder
   ---------------------------------------------------------- */
.ph {
  position: relative;
  overflow: hidden;
  background: var(--mist);
  color: var(--fg-muted);
  border: 1px solid var(--rule);
}
.ph::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    135deg,
    transparent 0 14px,
    rgba(74, 35, 71, 0.05) 14px 15px
  );
  pointer-events: none;
}
.ph-caption {
  position: absolute;
  inset: auto 16px 16px 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  z-index: 1;
}
.ph-corner {
  position: absolute;
  top: 16px; left: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  z-index: 1;
}
.ph-corner::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}
.ph.dark { background: var(--plum); }
.ph.dark::before {
  background-image: repeating-linear-gradient(
    135deg,
    transparent 0 14px,
    rgba(250,245,241,0.08) 14px 15px
  );
}
.ph.dark, .ph.dark .ph-caption, .ph.dark .ph-corner { color: var(--fg-on-dark-muted); }
.ph.blush { background: var(--blush); }
.ph.sage { background: var(--sage-soft); }

.ph.is-portrait { aspect-ratio: 3/4; }
.ph.is-square { aspect-ratio: 1; }
.ph.is-wide { aspect-ratio: 16/9; }
.ph.is-tall { aspect-ratio: 2/3; }

/* ----------------------------------------------------------
   Cards & rules
   ---------------------------------------------------------- */
.rule { border-top: 1px solid var(--rule); }
hr.rule { margin: 0; height: 1px; border: 0; background: var(--rule); }

.card-line {
  padding: 36px 0;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 80px 1fr 1fr 80px;
  gap: 32px;
  align-items: start;
}
.card-line .index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.card-line h3 {
  font-family: var(--font-display);
  font-size: clamp(28px, 2.8vw, 40px);
  font-weight: 400;
  margin: 0;
  letter-spacing: var(--tr-display);
  line-height: 1.05;
}

/* Pull quote */
.pull {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(28px, 3.4vw, 48px);
  line-height: 1.18;
  letter-spacing: var(--tr-display);
  color: var(--fg);
  max-width: 24ch;
}
.pull::before { content: "“"; color: var(--accent); margin-right: 4px; }
.pull::after  { content: "”"; color: var(--accent); }

/* Stat */
.stat .num {
  font-family: var(--font-display);
  font-size: clamp(56px, 7vw, 96px);
  line-height: 0.96;
  letter-spacing: var(--tr-display);
}
.stat .num .sup { font-size: 0.45em; vertical-align: top; margin-left: 0.1em; color: var(--accent); }
.stat .lbl {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tr-caps);
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-top: 12px;
  max-width: 24ch;
}

/* Marquee strip */
.marquee {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 18px 0;
  overflow: hidden;
  white-space: nowrap;
}
.marquee-track {
  display: inline-flex;
  gap: 80px;
  animation: marq 60s linear infinite;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 32px;
  color: var(--fg-muted);
}
.marquee-track span::after {
  content: "✦";
  color: var(--accent);
  margin-left: 80px;
  font-style: normal;
}
@keyframes marq {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* Form */
.field { display: flex; flex-direction: column; gap: 8px; }
.field label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tr-caps);
  text-transform: uppercase;
  color: var(--fg-muted);
}
.field input, .field select, .field textarea {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--rule);
  padding: 12px 0;
  font-family: var(--font-text);
  font-size: 16px;
  color: var(--fg);
  outline: none;
  transition: border-color 0.2s var(--ease);
}
.field input::placeholder, .field textarea::placeholder { color: var(--fg-faint); }
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--accent);
}

/* Page hero */
.page-hero {
  padding: var(--s-10) 0 var(--s-9);
  border-bottom: 1px solid var(--rule);
}
.page-hero .crumb {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tr-caps);
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 32px;
  display: flex;
  gap: 12px;
  align-items: center;
}
.page-hero .crumb a:hover { color: var(--accent); }
.page-hero .crumb .sep { color: var(--fg-faint); }

/* Layout helpers */
.grid { display: grid; gap: 32px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-12 { grid-template-columns: repeat(12, 1fr); }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }

.stack { display: flex; flex-direction: column; }
.stack-2 > * + * { margin-top: 8px; }
.stack-4 > * + * { margin-top: 16px; }
.stack-5 > * + * { margin-top: 24px; }
.stack-6 > * + * { margin-top: 32px; }
.stack-7 > * + * { margin-top: 48px; }

.row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.row-between { justify-content: space-between; }

/* responsive */
@media (max-width: 960px) {
  :root { --content-pad: 28px; }
  .nav-left, .nav-right { display: none; }
  .nav .container-wide { grid-template-columns: 1fr auto 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .card-line { grid-template-columns: 1fr; gap: 16px; }
}