/* Shared styles for every page. Page-specific rules stay in each page's own <style>. */

/* ── Tokens ─────────────────────────────────────────────────────── */
:root {
  --ink:          #1A1714;
  --ink-soft:     #3D342C;
  --muted:        #6A5A4C;   /* 5.7:1 on cream, 5.2:1 on cream-warm */
  --accent-text:  #8F4620;   /* terracotta for small text: 5.8:1 on cream */
  --cream:        #FAF7F2;
  --cream-warm:   #F2EDE4;
  --cream-deep:   #E8DFD3;
  --night:        #18150F;
  --night-lifted: #231E17;
  --accent:       #C4622D;
  --accent-dim:   #A8501F;
  --accent-glow:  rgba(196, 98, 45, 0.12);
  --accent-pale:  #ECC9AF;
  --border:       #DDD5C8;
  --border-night: rgba(255, 255, 255, 0.07);
  --text-on-dark: #F0E9DE;
  --text-on-dark-soft: rgba(240, 233, 222, 0.65);

  --serif: 'Libre Baskerville', Georgia, 'Times New Roman', serif;
  --prose: 'Hanken Grotesk', system-ui, sans-serif;

  --s1: 0.5rem;
  --s2: 1rem;
  --s3: 1.5rem;
  --s4: 2rem;
  --s5: 3rem;
  --s6: 4.5rem;
  --s7: 6rem;     /* vertical padding of every content block */

  --nav-h: 68px;
  --max-w: 1200px;
  --pad-x: clamp(1.5rem, 5vw, 3rem);

  --ease:     cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --dur:      0.28s;
  --dur-md:   0.55s;
}

/* ── Reset ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--prose);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ink);
  background: var(--cream);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; touch-action: manipulation; }
ul, ol { list-style: none; }
button { cursor: pointer; font: inherit; touch-action: manipulation; }

/* ── Accessibility ──────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--s3);
  padding: 0.625rem 1.25rem;
  background: var(--accent);
  color: #fff;
  font-family: var(--prose);
  font-size: 0.875rem;
  letter-spacing: 0.03em;
  z-index: 9999;
  transition: top 0.2s;
}
.skip-link:focus { top: var(--s2); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 1px;
}

.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;
}

/* ── Scroll reveals ─────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-md) var(--ease-out),
              transform var(--dur-md) var(--ease-out);
}
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: 0.10s; }
.reveal-d2 { transition-delay: 0.20s; }
.reveal-d3 { transition-delay: 0.30s; }
.reveal-d4 { transition-delay: 0.40s; }
.reveal-d5 { transition-delay: 0.50s; }

/* ── Layout and headings ────────────────────────────────────────── */
.wrap {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.section-heading {
  font-family: var(--serif);
  font-size: clamp(1.875rem, 4vw, 3rem);
  font-weight: 400;
  line-height: 1.18;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.section-heading--light { color: var(--text-on-dark); }

/* ── Navigation ─────────────────────────────────────────────────── */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad-x);
  z-index: 900;
  border-bottom: 1px solid transparent;
  transition: background var(--dur-md) var(--ease),
              box-shadow var(--dur-md) var(--ease),
              border-color var(--dur-md) var(--ease);
}

/* Inner pages: dark bar over the dark page header */
.nav--page {
  background: rgba(24, 21, 15, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border-night);
}

.nav.solid {
  background: rgba(250, 247, 242, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--border);
  border-color: var(--border);
}

.nav-logo {
  font-family: var(--serif);
  font-size: 1.125rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--text-on-dark);
  transition: color var(--dur) var(--ease);
}
.nav.solid .nav-logo { color: var(--ink); }
.nav-logo:hover,
.nav.solid .nav-logo:hover { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--s4);
}
.nav-links a {
  font-family: var(--prose);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(240, 233, 222, 0.85);
  position: relative;
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease);
}
.nav.solid .nav-links a { color: var(--ink-soft); }
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-md) var(--ease-out);
}
.nav-links a:hover::after,
.nav-links a:focus-visible::after,
.nav-links a[aria-current="page"]::after { transform: scaleX(1); }
.nav-links a:hover { color: rgba(240, 233, 222, 1); }
.nav.solid .nav-links a:hover { color: var(--accent); }
.nav-links a[aria-current="page"] { color: var(--accent-pale); }
.nav.solid .nav-links a[aria-current="page"] { color: var(--accent); }

.nav-burger {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: none;
  border: none;
  padding: 10px;
  min-width: 44px;
  min-height: 44px;
}
.nav-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-on-dark);
  transform-origin: center;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav.solid .nav-burger span { background: var(--ink); }
.nav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.nav-drawer {
  position: fixed;
  top: var(--nav-h);
  bottom: 0;
  inset-inline: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--cream);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: var(--s4) var(--pad-x) var(--s5);
  display: flex;
  flex-direction: column;
  gap: var(--s3);
  transform: translateY(-110%);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--dur-md) var(--ease),
              opacity var(--dur-md) var(--ease),
              visibility 0s var(--dur-md);
  z-index: 850;
  pointer-events: none;
  overscroll-behavior: contain;
}
.nav-drawer.open {
  transform: none;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: transform var(--dur-md) var(--ease),
              opacity var(--dur-md) var(--ease),
              visibility 0s;
}
/* the open menu covers the whole screen, so the page behind it stays put */
html:has(.nav-drawer.open) { overflow: hidden; }
.nav-drawer a {
  font-family: var(--serif);
  font-size: 1.625rem;
  font-weight: 400;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}
.nav-drawer a:hover { color: var(--accent); }

/* ── Inner page header ──────────────────────────────────────────── */
.page-header {
  background: var(--night);
  padding-top: calc(var(--nav-h) + var(--s6));
  padding-bottom: var(--s6);
}
.page-tag {
  font-family: var(--prose);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-pale);
  margin-bottom: var(--s2);
}
.page-title {
  font-family: var(--serif);
  font-size: clamp(2.375rem, 6vw, 4.5rem);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text-on-dark);
  text-wrap: balance;
}
.page-title em { font-style: italic; color: var(--accent-pale); }

/* ── Footer ─────────────────────────────────────────────────────── */
.footer {
  background: var(--night);
  padding: var(--s4) 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--s2);
}
.footer-copy {
  font-family: var(--prose);
  font-size: 0.875rem;
  color: var(--text-on-dark-soft);
}
.footer-copy strong { color: var(--text-on-dark); font-weight: 400; }
.footer-credit {
  font-family: var(--prose);
  font-size: 0.875rem;
  color: var(--text-on-dark-soft);
}
.footer-credit a {
  color: var(--text-on-dark);
  text-decoration: underline;
  text-decoration-color: rgba(240, 233, 222, 0.3);
  text-underline-offset: 0.2em;
  transition: color var(--dur) var(--ease), text-decoration-color var(--dur) var(--ease);
}
.footer-credit a:hover { color: var(--accent-pale); text-decoration-color: var(--accent-pale); }

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav-links  { display: none; }
  .nav-burger { display: flex; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ── Headings rise line by line (motion.js) ─────────────────────── */
.rise-line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.1em;
  margin-bottom: -0.1em;
}
.rise-line-in {
  display: block;
  animation: line-rise 0.9s var(--ease-out) both;
}
@keyframes line-rise {
  from { transform: translateY(105%); }
  to   { transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .rise-line-in { animation: none; }
}