/* ============================================================
   IROKO TREE PRESS — design tokens
   Charcoal ground, warm cream cards, ochre/gold accent.
   Fraunces (display) / Inter (body) / IBM Plex Mono (bibliographic labels)
   ============================================================ */

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

:root{
  --indigo-950: #141210;
  --indigo-900: #1C1A17;
  --indigo-800: #262320;
  --indigo-700: #3A3530;
  --indigo-line: rgba(198, 138, 61, 0.20);
  --paper: #F5EFE1;
  --paper-dim: #EAE1CB;
  --ink: #1A1712;
  --ink-soft: #4C4638;
  --mist: #BCB6A9;
  --mist-dim: #8B8577;
  --brass: #A9722E;
  --brass-bright: #C68A3D;
  --leaf: #63603F;
  --rule: rgba(245, 239, 225, 0.14);
  --max: 1160px;
  --radius: 2px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin: 0;
  background: var(--indigo-900);
  color: var(--mist);
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

h1,h2,h3,h4{
  font-family: 'Fraunces', serif;
  color: var(--paper);
  font-weight: 500;
  line-height: 1.12;
  margin: 0;
}

.eyebrow{
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass);
  display: block;
  margin-bottom: 0.9rem;
}

a{ color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible{
  outline: 2px solid var(--brass-bright);
  outline-offset: 3px;
}

.wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
}

/* ---------- header ---------- */
.site-header{
  position: sticky; top: 0; z-index: 40;
  background: rgba(10, 9, 8, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap{
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}
.brandmark{
  display: flex; align-items: center; gap: 0.65rem;
  font-family: 'Fraunces', serif;
  font-size: 1.15rem;
  color: var(--paper);
  letter-spacing: 0.01em;
}
.brandmark svg{ width: 30px; height: 30px; flex-shrink: 0; }
.brandmark .press{ color: var(--mist-dim); font-weight: 400; }

nav.primary-nav{ display: flex; align-items: center; gap: clamp(1rem, 2.4vw, 2.2rem); }
nav.primary-nav a{
  font-size: 0.86rem;
  color: var(--mist);
  padding: 0.4rem 0.1rem;
  border-bottom: 1px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
nav.primary-nav a:hover{ color: var(--paper); border-color: var(--brass); }
nav.primary-nav a.current{ color: var(--brass-bright); }

.nav-toggle{
  display: none;
  background: none; border: 1px solid var(--rule); border-radius: var(--radius);
  color: var(--paper); width: 42px; height: 42px;
  align-items: center; justify-content: center;
  cursor: pointer;
}

@media (max-width: 780px){
  nav.primary-nav{
    position: fixed; inset: 76px 0 0 0;
    background: var(--indigo-950);
    flex-direction: column; align-items: flex-start;
    padding: 2rem clamp(1.25rem, 4vw, 3rem);
    gap: 1.4rem;
    transform: translateY(-8px);
    opacity: 0; pointer-events: none;
    transition: opacity .18s ease, transform .18s ease;
  }
  nav.primary-nav.open{ opacity: 1; pointer-events: auto; transform: translateY(0); }
  nav.primary-nav a{ font-size: 1.05rem; }
  .nav-toggle{ display: flex; }
}

/* ---------- buttons ---------- */
.btn{
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid var(--brass);
  transition: background .15s ease, color .15s ease, transform .1s ease;
  cursor: pointer;
}
.btn-solid{ background: var(--brass); color: var(--indigo-950); }
.btn-solid:hover{ background: var(--brass-bright); transform: translateY(-1px); }
.btn-ghost{ background: transparent; color: var(--paper); }
.btn-ghost:hover{ background: rgba(201,162,75,0.1); }

/* ---------- footer ---------- */
footer.site-footer{
  border-top: 1px solid var(--rule);
  margin-top: 6rem;
  padding: 3rem 0 2.4rem;
  color: var(--mist-dim);
  font-size: 0.85rem;
}
footer.site-footer .wrap{
  display: flex; flex-wrap: wrap; gap: 2rem;
  justify-content: space-between; align-items: flex-start;
}
footer.site-footer .imprint-line{ font-family: 'Fraunces', serif; color: var(--mist); font-size: 0.95rem; margin-bottom: 0.5rem; }
footer.site-footer nav{ display: flex; gap: 1.4rem; flex-wrap: wrap; }
footer.site-footer nav a:hover{ color: var(--brass); }
footer .fine{ margin-top: 2.2rem; font-size: 0.76rem; color: var(--mist-dim); opacity: 0.7; }

/* ---------- generic sections ---------- */
section{ padding: clamp(3rem, 7vw, 6rem) 0; }
.divider{
  height: 1px;
  background: var(--rule);
  margin: 0;
}
.rule-rings{
  display: flex; align-items: center; gap: 0.5rem;
  margin: 0 0 1.6rem;
}
.rule-rings::after{
  content: ''; flex: 1; height: 1px; background: var(--indigo-line);
}

.paper-card{
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--radius);
  padding: clamp(1.6rem, 4vw, 2.6rem);
}
.paper-card h2, .paper-card h3{ color: var(--ink); }
.paper-card p{ color: var(--ink-soft); }

p{ margin: 0 0 1rem; }
p:last-child{ margin-bottom: 0; }

.lede{ font-size: 1.15rem; color: var(--paper); max-width: 60ch; }
.muted{ color: var(--mist-dim); }

.grid-2{ display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.5rem, 4vw, 3.5rem); }
.grid-3{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
@media (max-width: 860px){
  .grid-2{ grid-template-columns: 1fr; }
  .grid-3{ grid-template-columns: 1fr; }
}

/* tree ring mark, used as signature motif */
.ring-mark{ display: inline-flex; gap: 4px; align-items: center; }
.ring-mark span{
  width: 9px; height: 9px; border-radius: 50%;
  border: 1.5px solid var(--indigo-line);
}
.ring-mark span.filled{ background: var(--brass); border-color: var(--brass); }

/* skip link */
.skip-link{
  position: absolute; left: -999px; top: 0;
  background: var(--brass); color: var(--indigo-950);
  padding: 0.6rem 1rem; z-index: 100;
}
.skip-link:focus{ left: 1rem; top: 1rem; }