/* ============================================================
   Base — resets, typography, utilities
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-relaxed);
  color: var(--ink);
  background: var(--bg-grad-warm);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Subtle paper-grain overlay — applied as a fixed pseudo for depth */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  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 0.6  0 0 0 0 0.45  0 0 0 0 0.3  0 0 0 0.18 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

main, nav, header, footer, section { position: relative; z-index: 2; }

/* — Typography — */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-display);
  color: var(--ink);
  margin: 0 0 var(--s-4);
}
h1 {
  font-size: var(--fs-display);
  font-weight: var(--fw-medium);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-display);
}
h2 {
  font-size: var(--fs-heading);
  font-weight: var(--fw-medium);
  line-height: 1.08;
  letter-spacing: var(--ls-heading);
}
h3, h4 {
  font-size: var(--fs-heading);
  font-weight: var(--fw-medium);
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-heading);
}
h5, h6 {
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-snug);
}

.type-hero {
  font-family: var(--ff-display);
  font-size: var(--fs-display);
  font-weight: var(--fw-regular);
  line-height: 1.02;
  letter-spacing: var(--ls-display);
}
.type-display {
  font-family: var(--ff-display);
  font-size: var(--fs-display);
  font-weight: var(--fw-regular);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-display);
}
.type-section-title {
  font-family: var(--ff-display);
  font-size: var(--fs-heading);
  font-weight: var(--fw-medium);
  line-height: 1.08;
  letter-spacing: var(--ls-heading);
}
.type-card-title {
  font-family: var(--ff-display);
  font-size: var(--fs-heading);
  font-weight: var(--fw-medium);
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-tight);
}
.type-lede,
.hero-lede {
  font-size: var(--fs-body);
  font-weight: var(--fw-light);
  line-height: 1.55;
  color: var(--ink-soft);
}
.type-meta {
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  line-height: var(--lh-normal);
  letter-spacing: var(--ls-wide);
  color: var(--muted);
}
.type-caption {
  font-size: var(--fs-small);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  color: var(--muted);
  opacity: 0.85;
}

em, .it {
  font-style: italic;
  color: var(--terracotta);
}

p { margin: 0 0 var(--s-4); max-width: 65ch; }

.type-hero + p,
.type-display + p,
[class*="hero"] p.lede {
  font-family: var(--ff-body);
}

.prose {
  font-family: var(--ff-body);
  font-size: var(--fs-prose);
  line-height: var(--lh-prose);
  color: var(--ink);
}
.prose p,
.prose li {
  font-family: var(--ff-body);
  max-width: 65ch;
}
.prose h2 {
  font-family: var(--ff-display);
  font-size: var(--fs-heading);
  font-weight: var(--fw-medium);
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-heading);
  margin: var(--s-7) 0 var(--s-4);
}
.prose h3,
.prose h4 {
  font-family: var(--ff-display);
  font-size: var(--fs-heading);
  font-weight: var(--fw-medium);
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-heading);
  margin: var(--s-6) 0 var(--s-3);
}
.prose blockquote {
  font-family: var(--ff-hand);
  font-size: var(--fs-body);
  font-style: italic;
  line-height: var(--lh-relaxed);
  color: var(--ink-soft);
  margin: var(--s-6) 0;
  padding-left: var(--s-5);
  border-left: 3px solid var(--terracotta);
}
a { color: var(--teal); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; transition: color var(--dur-1) var(--ease-out); }
a:hover { color: var(--terracotta); }

/* — Containers / utilities — */
.container-x { max-width: var(--container); margin-inline: auto; padding-inline: var(--s-5); }
@media (min-width: 768px) { .container-x { padding-inline: var(--s-7); } }
.container-narrow { max-width: var(--container-narrow); margin-inline: auto; padding-inline: var(--s-5); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-family: var(--ff-mono);
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-caps);
  text-transform: uppercase;
  color: var(--terracotta);
}
.eyebrow::before {
  content: "";
  width: 28px; height: 1.5px;
  background: var(--terracotta);
  display: inline-block;
}

.kicker {
  font-family: var(--ff-display);
  font-style: italic;
  font-size: var(--fs-body);
  color: var(--teal);
  font-weight: 400;
}

.section { padding: var(--s-9) 0; }
.section-tight { padding: var(--s-7) 0; }

.rule-h {
  height: 1px;
  background: var(--rule);
  border: 0;
  margin: var(--s-7) 0;
}

/* — Chapter numbering badge — */
.chapter {
  display: inline-flex;
  align-items: baseline;
  gap: var(--s-2);
  font-family: var(--ff-mono);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-caps);
  color: var(--muted);
  text-transform: uppercase;
}
.chapter b {
  color: var(--terracotta);
  font-weight: var(--fw-bold);
  font-feature-settings: "tnum" 1;
}

/* — Buttons — */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  font-family: var(--ff-body);
  font-weight: var(--fw-bold);
  font-size: var(--fs-cta);
  line-height: 1;
  padding: 18px 26px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--dur-1) var(--ease-spring), background var(--dur-1) var(--ease-out), color var(--dur-1) var(--ease-out), box-shadow var(--dur-2) var(--ease-out), border-color var(--dur-1) var(--ease-out);
  min-height: 52px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:focus-visible { outline: 2px solid var(--ochre); outline-offset: 3px; }

.btn-primary {
  background: var(--brand-grad);
  color: var(--paper);
  box-shadow: var(--shadow-warm);
}
.btn-primary:hover { background: var(--brand-grad); filter: brightness(1.08); color: var(--paper); box-shadow: 0 22px 48px -22px rgba(74, 31, 149, 0.55); }

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

.btn-link {
  background: none;
  padding: 0;
  border: 0;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1.5px solid var(--terracotta);
  border-radius: 0;
  padding-bottom: 4px;
  min-height: auto;
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
}
.btn-link:hover { color: var(--terracotta); transform: translateX(2px); }

.btn .arrow {
  display: inline-block;
  transition: transform var(--dur-2) var(--ease-spring);
}
.btn:hover .arrow { transform: translateX(4px); }

/* Visually hidden */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* — Decorative star/dot/triangle (folk-geometric SVG marks) — */
.mark { display: inline-block; vertical-align: middle; }
.mark-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--terracotta);
  display: inline-block;
}

/* AOS reduced-motion guard already handled in tokens.css */

/* Page-load reveal */
.fade-up { opacity: 0; transform: translateY(18px); animation: fadeUp 720ms var(--ease-out) forwards; }
.fade-up[data-delay="1"] { animation-delay: 80ms; }
.fade-up[data-delay="2"] { animation-delay: 160ms; }
.fade-up[data-delay="3"] { animation-delay: 240ms; }
.fade-up[data-delay="4"] { animation-delay: 320ms; }
.fade-up[data-delay="5"] { animation-delay: 400ms; }
.fade-up[data-delay="6"] { animation-delay: 480ms; }
@keyframes fadeUp { to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  .fade-up {
    opacity: 1;
    transform: none;
    animation: none;
  }
}

/* Selection */
::selection { background: var(--ochre); color: var(--ink); }