/* ===========================================================
   Buchus Consulting — design tokens
   Ink   #0E1B2A   deep navy, hero + footer
   Paper #EFECE3   warm neutral paper, body sections
   Gold  #B08D46   brass accent — value, established 2004
   Jade  #1F5C52   Asia Pacific waters — secondary accent
   Slate #2A313C   body text on paper
   =========================================================== */

:root{
  --ink: #0E1B2A;
  --ink-soft: #16283C;
  --paper: #EFECE3;
  --paper-soft: #F6F4EE;
  --gold: #B08D46;
  --gold-soft: #D8C08F;
  --jade: #1F5C52;
  --slate: #2A313C;
  --slate-60: rgba(42,49,60,0.62);
  --on-ink: #F3F1EA;
  --on-ink-60: rgba(243,241,234,0.66);
  --line-ink: rgba(243,241,234,0.16);
  --line-paper: rgba(42,49,60,0.14);

  --font-display: "Space Grotesk", ui-sans-serif, sans-serif;
  --font-body: "IBM Plex Sans", ui-sans-serif, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --wrap: 1180px;
  --radius: 2px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body{
  margin: 0;
  background: var(--paper);
  color: var(--slate);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3{
  font-family: var(--font-display);
  color: inherit;
  line-height: 1.08;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

p{ margin: 0 0 1em; }
ul{ margin: 0; padding: 0; list-style: none; }
a{ color: inherit; }

.wrap{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}

.visually-hidden{
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

.skip-link{
  position: absolute; top: -50px; left: 12px;
  background: var(--gold); color: var(--ink);
  padding: 10px 16px; z-index: 200; font-family: var(--font-mono);
  font-size: 0.85rem; transition: top 0.2s ease;
}
.skip-link:focus{ top: 12px; }

:focus-visible{
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin: 0 0 1.1em;
}
.eyebrow-dark{ color: var(--jade); }

.section-title{
  font-size: clamp(1.6rem, 2.6vw, 2.3rem);
  max-width: 20ch;
}

/* ---------- header ---------- */
.site-header{
  position: sticky; top: 0; z-index: 100;
  background: rgba(239,236,227,0.86);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.site-header.is-scrolled{ border-color: var(--line-paper); }

.header-inner{
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 16px; padding-bottom: 16px;
}

.wordmark{
  display: flex; align-items: baseline; gap: 10px;
  text-decoration: none; color: var(--ink);
}
.wordmark-mark{
  font-family: var(--font-mono); font-size: 0.85rem;
  letter-spacing: 0.05em; color: var(--gold);
  border: 1px solid var(--gold); padding: 3px 6px;
}
.wordmark-text{
  font-family: var(--font-display); font-weight: 600;
  font-size: 1.05rem; letter-spacing: -0.01em;
}

.site-nav ul{
  display: flex; gap: 32px;
}
.site-nav a{
  font-family: var(--font-mono); font-size: 0.82rem;
  letter-spacing: 0.06em; text-transform: uppercase;
  text-decoration: none; color: var(--slate);
  padding-bottom: 4px; border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.site-nav a:hover{ color: var(--jade); border-color: var(--jade); }

.nav-toggle{
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 34px; height: 34px; background: none; border: none; cursor: pointer;
}
.nav-toggle span{
  display: block; width: 100%; height: 2px; background: var(--ink);
}

/* ---------- hero ---------- */
.hero{
  background: var(--ink);
  color: var(--on-ink);
  overflow: hidden;
}
.hero-inner{
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 40px;
  padding: 88px 28px 96px;
  min-height: 640px;
}

.eyebrow.hero-copy-eyebrow{ color: var(--gold-soft); }

.hero h1{
  font-size: clamp(2.3rem, 4.6vw, 3.6rem);
  max-width: 14ch;
  color: var(--on-ink);
}

.hero-lede{
  max-width: 46ch;
  font-size: 1.08rem;
  color: var(--on-ink-60);
}

.hero-actions{
  display: flex; gap: 16px; flex-wrap: wrap;
  margin-top: 2em;
}

.btn{
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 13px 22px;
  border: 1px solid transparent;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  display: inline-block;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{
  background: var(--gold); color: var(--ink);
}
.btn-primary:hover{ background: var(--gold-soft); }
.btn-ghost{
  border-color: var(--line-ink); color: var(--on-ink);
}
.btn-ghost:hover{ border-color: var(--gold); color: var(--gold-soft); }

.hero-diagram{ position: relative; }
.route-svg{ width: 100%; height: auto; display: block; }
.route-path{
  fill: none;
  stroke: var(--jade);
  stroke-width: 1.4;
  stroke-linecap: round;
  opacity: 0.85;
  stroke-dasharray: 420;
  stroke-dashoffset: 420;
  animation: draw 1.6s ease forwards;
}
.route-path:nth-child(2){ animation-delay: 0.12s; stroke: var(--gold-soft); }
.route-path:nth-child(3){ animation-delay: 0.24s; }
.route-path:nth-child(4){ animation-delay: 0.36s; stroke: var(--gold-soft); }
.route-path:nth-child(5){ animation-delay: 0.48s; }
.route-path:nth-child(6){ animation-delay: 0.6s; stroke: var(--gold-soft); }
@keyframes draw{ to{ stroke-dashoffset: 0; } }

.node{ fill: var(--on-ink); opacity: 0.9; }
.node-hub{ fill: var(--gold); }

.route-labels text{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  fill: var(--on-ink-60);
}

@media (prefers-reduced-motion: reduce){
  .route-path{ stroke-dashoffset: 0; animation: none; }
}

/* ---------- services ---------- */
.services{ padding: 96px 0; }
.services .section-title{ margin-bottom: 56px; }

.service-groups{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-paper);
  border: 1px solid var(--line-paper);
}
.service-group{
  background: var(--paper-soft);
  padding: 34px 30px 38px;
}
.service-group-head{ margin-bottom: 22px; }
.service-group-index{
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--jade);
  border-bottom: 2px solid var(--jade);
  padding-bottom: 6px;
  margin-bottom: 14px;
}
.service-group h3{
  font-size: 1.15rem;
  max-width: 18ch;
}
.service-list li{
  padding: 10px 0;
  border-top: 1px solid var(--line-paper);
  font-size: 0.96rem;
  color: var(--slate);
}
.service-list li:first-child{ border-top: none; }

/* ---------- about ---------- */
.about{
  background: var(--paper);
  padding: 96px 0;
  border-top: 1px solid var(--line-paper);
}
.about-inner{
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 56px;
  align-items: start;
}
.about-text p{
  font-size: 1.05rem;
  max-width: 56ch;
  color: var(--slate-60);
}
.about-text p:first-of-type{ color: var(--slate); }

.pull-quote{
  margin: 0;
  padding: 32px 0 32px 28px;
  border-left: 2px solid var(--gold);
}
.pull-quote p{
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 500;
  line-height: 1.35;
  color: var(--ink);
  margin: 0;
}

/* ---------- contact ---------- */
.contact{
  background: var(--ink);
  color: var(--on-ink);
  padding: 96px 0;
}
.contact-inner{
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
}
.contact-intro h2{ color: var(--on-ink); }
.contact-intro p{ color: var(--on-ink-60); max-width: 48ch; }

.contact-card{
  background: var(--ink-soft);
  border: 1px solid var(--line-ink);
  padding: 34px 32px;
}
.contact-card h3{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-soft);
  font-weight: 500;
  margin: 1.6em 0 0.7em;
}
.contact-card h3:first-child{ margin-top: 0; }
.contact-card address{
  font-style: normal;
  color: var(--on-ink);
  line-height: 1.7;
}
.contact-email{
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--on-ink);
  margin: 0;
}

/* ---------- page hero (About / Contact banner) ---------- */
.page-hero{
  background: var(--paper-soft);
  border-bottom: 1px solid var(--line-paper);
  padding: 72px 0 56px;
}
.page-hero h1{
  font-size: clamp(1.9rem, 3.6vw, 2.8rem);
  max-width: 22ch;
  color: var(--ink);
}
.page-hero-ink{
  background: var(--ink);
  border-bottom: 1px solid var(--line-ink);
}
.page-hero-ink .eyebrow{ color: var(--gold-soft); }
.page-hero h1.on-ink{ color: var(--on-ink); }

/* ---------- cta strip ---------- */
.cta-strip{
  background: var(--jade);
  color: var(--on-ink);
  padding: 44px 0;
}
.cta-strip-inner{
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
}
.cta-strip p{
  margin: 0; font-size: 1.1rem; max-width: 44ch;
  font-family: var(--font-display); font-weight: 500;
}
.cta-strip .btn-primary{ flex-shrink: 0; }

/* ---------- footer ---------- */
.site-footer{
  background: var(--ink);
  border-top: 1px solid var(--line-ink);
  padding: 22px 0 30px;
}
.footer-inner{
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--on-ink-60);
}

/* ---------- responsive ---------- */
@media (max-width: 900px){
  .hero-inner{ grid-template-columns: 1fr; padding-top: 64px; }
  .hero-diagram{ order: -1; max-width: 360px; margin: 0 auto; }
  .service-groups{ grid-template-columns: 1fr; }
  .about-inner, .contact-inner{ grid-template-columns: 1fr; }
  .pull-quote{ border-left: none; border-top: 2px solid var(--gold); padding: 24px 0 0; }
}

@media (max-width: 720px){
  .site-nav ul{
    display: none;
    flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--paper-soft);
    border-bottom: 1px solid var(--line-paper);
    padding: 14px 28px 22px; gap: 16px;
  }
  .site-nav ul.is-open{ display: flex; }
  .nav-toggle{ display: flex; }
  .header-inner{ position: relative; }
}