/* Kora Resources — Direction L: institutional light. Spec §6 (revised).
   Contrast (WCAG): ink/paper 15.17 · ink-dim/paper 7.09 · ink-faint/paper 4.55
   gold/paper 4.84 · terracotta/paper 4.98 · band-text/band 14.17 · band-gold/band 7.84
   band-dim/band 5.62 · topbar 8.66 · chip-on-band 8.69. Band-gold is dark-ground only. */
:root {
  --paper: #F7F5EF;
  --ink: #17211B;
  --ink-dim: #4C554E;
  --ink-faint: #6B7268;
  --rule: #DAD6C9;
  --gold: #7A6B33;
  --band: #10160F;
  --band-text: #E5E2D8;
  --band-gold: #C4A748;
  --band-dim: #8B9085;
  --terracotta: #B04A2F;
  --terracotta-band: #E0A58E;
  --font-display: 'Fraunces', Georgia, serif;
  --font-ui: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --wrap: 1120px;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
}
* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.6 var(--font-ui);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
section { padding: 72px 0; }
section + section { border-top: 1px solid var(--rule); }
.eyebrow {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 22px;
}
h2 {
  font: 500 clamp(27px, 2vw + 18px, 36px)/1.12 var(--font-display);
  letter-spacing: -.01em;
  margin-bottom: 18px;
}
.section-intro { color: var(--ink-dim); max-width: 58ch; }
.btn {
  display: inline-block;
  background: var(--ink);
  color: var(--paper);
  font: 600 13.5px/1 var(--font-ui);
  padding: 15px 24px;
  border-radius: 2px;
  border: 0;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 150ms ease, transform 140ms var(--ease-out);
}
.btn:hover { background: #2A362D; }
.btn:active { transform: scale(0.97); }
.btn-underline {
  display: inline-block;
  color: var(--ink);
  font: 500 13.5px/1 var(--font-ui);
  padding: 15px 2px;
  border-bottom: 1px solid var(--ink);
  text-decoration: none;
  transition: border-color 150ms ease, color 150ms ease;
}
.btn-underline:hover { color: var(--gold); border-color: var(--gold); }
.to-confirm {
  font: 500 11px/1.4 var(--font-mono);
  color: var(--terracotta);
  border: 1px dashed var(--terracotta);
  border-radius: 2px;
  padding: 2px 6px;
  white-space: nowrap;
}
.site-footer .to-confirm {
  color: var(--terracotta-band);
  border-color: var(--terracotta-band);
}
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.site-footer :focus-visible { outline-color: var(--band-gold); }

/* Top bar */
.topbar { background: var(--ink); padding: 8px 24px; }
.topbar p {
  color: #B9BDB4;
  font: 400 10.5px/1.6 var(--font-mono);
  letter-spacing: .06em;
  max-width: var(--wrap);
  margin: 0 auto;
}

/* Nav */
.site-nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.nav-row { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font: 500 21px/1 var(--font-display); letter-spacing: .005em; text-decoration: none; }
.logo-mark { width: auto; height: 30px; }
.site-footer .logo-mark { height: 34px; }
.nav-links { display: flex; gap: 28px; align-items: center; font: 500 13px/1 var(--font-ui); }
.nav-links a { color: var(--ink-dim); text-decoration: none; transition: color 120ms ease; }
.nav-links a:hover { color: var(--ink); }
.nav-links .nav-cta {
  background: var(--ink); color: var(--paper);
  font: 600 12px/1 var(--font-ui);
  padding: 11px 18px; border-radius: 2px;
  transition: background-color 150ms ease, transform 140ms var(--ease-out);
}
.nav-links .nav-cta:hover { background: #2A362D; color: var(--paper); }
.nav-links .nav-cta:active { transform: scale(0.97); }
@media (max-width: 720px) {
  .nav-row { height: auto; flex-direction: column; align-items: flex-start; gap: 12px; padding-top: 14px; padding-bottom: 14px; }
  .nav-links { flex-wrap: wrap; gap: 10px 20px; }
}

/* Hero */
#hero { padding: 60px 0 0; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: center;
  padding-bottom: 64px;
}
h1 {
  font: 500 clamp(34px, 2.6vw + 22px, 52px)/1.06 var(--font-display);
  letter-spacing: -.015em;
  margin-bottom: 20px;
}
h1 .qi { font-style: italic; font-weight: 400; }
.hero-sub { font-size: 16px; line-height: 1.65; color: var(--ink-dim); max-width: 46ch; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; }
.hero-fig { position: relative; margin: 0; }
.hero-fig img { width: 100%; aspect-ratio: 4 / 3.4; object-fit: cover; height: auto; }
.hero-fig figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  background: rgba(12, 16, 13, .82);
  color: #D8D5CC;
  font: 400 10.5px/1.5 var(--font-mono);
  letter-spacing: .08em;
  padding: 10px 14px;
  display: flex; justify-content: space-between; gap: 8px 16px; flex-wrap: wrap;
}

/* Facts band */
.facts {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--rule);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.fact-item { background: var(--paper); padding: 26px 32px; }
.fact-item b { display: block; font: 500 26px/1 var(--font-display); margin-bottom: 8px; }
.fact-item span {
  font: 400 11px/1.5 var(--font-mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
@media (max-width: 900px) { .facts { grid-template-columns: 1fr 1fr; } }

/* Sourcing facts */
.cap-ledger { margin-top: 40px; border-top: 2px solid var(--ink); }
.cap-row { display: grid; grid-template-columns: 150px 320px 1fr; gap: 32px; padding: 22px 0; border-bottom: 1px solid var(--rule); align-items: baseline; }
.cap-tag { font: 500 10.5px/1.9 var(--font-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--gold); }
.cap-row h3 { font: 500 21px/1.3 var(--font-display); letter-spacing: -.005em; }
.cap-row p { font-size: 14.5px; line-height: 1.65; color: var(--ink-dim); max-width: 58ch; }
@media (max-width: 900px) { .cap-row { grid-template-columns: 1fr; gap: 6px; padding: 24px 0; } }
.fact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); margin-top: 48px; }
.fact { background: var(--paper); padding: 28px 24px; }
.fact h3 { font: 600 15px/1.3 var(--font-ui); margin-bottom: 10px; }
.fact p { font-size: 14px; color: var(--ink-dim); }
@media (max-width: 760px) { .fact-grid { grid-template-columns: 1fr; } }

/* Commodity grid — ten verticals, uniform image cards */
#vertical-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
#vertical-grid > .commodity-card:nth-child(3n+1):last-child { grid-column: 1 / -1; flex-direction: row; }
#vertical-grid > .commodity-card:nth-child(3n+1):last-child .commodity-media { width: 38%; aspect-ratio: auto; }
#vertical-grid > .commodity-card:nth-child(3n+1):last-child .commodity-media img { height: 100%; }
@media (max-width: 1020px) {
  #vertical-grid { grid-template-columns: repeat(2, 1fr); }
  #vertical-grid > .commodity-card:nth-child(3n+1):last-child { grid-column: auto; flex-direction: column; }
  #vertical-grid > .commodity-card:nth-child(3n+1):last-child .commodity-media { width: auto; aspect-ratio: 16 / 9; }
}
@media (max-width: 560px) {
  #vertical-grid { grid-template-columns: 1fr; }
}
.commodity-card {
  background: var(--paper);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: background-color 150ms ease, transform 200ms var(--ease-out);
}
.commodity-card:hover { background: #EFECE2; }
.commodity-media { position: relative; aspect-ratio: 16 / 9; overflow: hidden; }
.commodity-media img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transition: transform 400ms var(--ease-out);
}
.commodity-card:hover .commodity-media img { transform: scale(1.03); }
.commodity-body { padding: 24px 26px 28px; min-width: 0; display: flex; flex-direction: column; flex: 1; }
.commodity-body h3 { font: 500 20px/1.2 var(--font-display); margin-bottom: 8px; }
.commodity-body .range-label { font: 500 10.5px/1 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--gold); margin-bottom: 8px; }
.commodity-body .range { font: 400 12.5px/1.6 var(--font-mono); color: var(--ink-dim); margin-bottom: 16px; }
.commodity-body .domain-link { margin-top: auto; }
.domain-link { display: inline-block; font: 500 12.5px/1 var(--font-mono); color: var(--gold); letter-spacing: .04em; }
.commodity-card:hover .domain-link { text-decoration: underline; color: #74652F; }
.principal-title { font: 500 10.5px/1.6 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint); }
.principal-link a, .channels a { font: 500 12.5px/1 var(--font-mono); color: var(--gold); text-decoration: none; }
.principal-link a:hover, .channels a:hover { text-decoration: underline; }
@media (max-width: 640px) {
  .commodity-body { padding: 24px 24px 28px; }
}

/* Process */
.steps { list-style: none; padding: 0; margin: 40px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.steps li { background: var(--paper); padding: 26px 22px; }
.step-n { font: 500 12px/1 var(--font-mono); color: var(--gold); display: block; margin-bottom: 14px; }
.steps h3 { font: 600 15px/1.3 var(--font-ui); margin-bottom: 8px; }
.steps p { font-size: 13.5px; color: var(--ink-dim); }
.doc-strip { margin-top: 28px; border: 1px solid var(--rule); border-radius: 2px; padding: 18px 22px; display: flex; gap: 24px; align-items: baseline; flex-wrap: wrap; }
.doc-label { font: 500 10.5px/1 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--gold); white-space: nowrap; }
.doc-list { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 0; padding: 0; }
.doc-list li { font: 400 12.5px/1.5 var(--font-mono); color: var(--ink-dim); }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 280px; gap: 56px; align-items: start; }
.principal { border: 1px solid var(--rule); border-radius: 2px; padding: 24px; text-align: center; }
.principal-photo { aspect-ratio: 1; border: 1px solid var(--rule); border-radius: 2px; overflow: hidden; margin-bottom: 16px; }
.principal-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.principal-name { font: 600 14px/1.4 var(--font-ui); margin-bottom: 6px; }

/* Inquiry */
.inquiry-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: start; }
.channels { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 12px; }
.ch-label { font: 500 10.5px/1 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--gold); display: inline-block; width: 84px; }
.inquiry-form { display: grid; gap: 16px; border: 1px solid var(--rule); border-radius: 2px; padding: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.inquiry-form label { display: grid; gap: 6px; font: 500 11px/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-dim); }
.inquiry-form input, .inquiry-form select, .inquiry-form textarea {
  background: var(--paper); border: 1px solid var(--rule); border-radius: 2px;
  color: var(--ink); font: 400 14px/1.4 var(--font-ui); padding: 11px 12px;
}
.inquiry-form ::placeholder { color: var(--ink-faint); opacity: 1; }
.inquiry-form input:focus-visible, .inquiry-form select:focus-visible, .inquiry-form textarea:focus-visible {
  border-color: var(--ink); outline: 2px solid var(--ink); outline-offset: 1px;
}
.form-note { font: 400 11.5px/1.5 var(--font-mono); color: var(--ink-faint); }
.inquiry-form .pfield { display: grid; gap: 6px; font: 500 11px/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-dim); position: relative; min-width: 0; }
.pp { position: relative; min-width: 0; }
.pp > summary { list-style: none; cursor: pointer; background: var(--paper); border: 1px solid var(--rule); border-radius: 2px; padding: 11px 12px; font: 400 14px/1.4 var(--font-ui); color: var(--ink); text-transform: none; letter-spacing: 0; display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.pp > summary::-webkit-details-marker { display: none; }
.pp > summary::after { content: "▾"; color: var(--ink-dim); font-size: 12px; }
.pp[open] > summary { border-color: var(--ink); }
#pp-groups { position: absolute; z-index: 20; top: calc(100% + 6px); right: 0; width: min(560px, calc(100vw - 64px)); background: var(--paper); border: 1px solid var(--ink); border-radius: 2px; padding: 4px 16px 8px; box-shadow: 0 12px 32px rgba(23, 33, 27, .12); max-height: 340px; overflow-y: auto; }
.pp-group { border-bottom: 1px solid var(--rule); }
.pp-group:last-child { border-bottom: 0; }
.pp-group summary { cursor: pointer; font: 500 13.5px/1.4 var(--font-ui); color: var(--ink); padding: 9px 2px; }
.pp-group summary:hover { color: var(--gold); }
.pp-chips { display: flex; flex-wrap: wrap; gap: 8px; padding: 2px 0 12px; }
.pp-other { padding-top: 12px; }
.inquiry-form .pp-chip { display: inline-flex; flex-direction: row; align-items: center; gap: 7px; font: 400 12px/1.3 var(--font-mono); letter-spacing: 0; text-transform: none; color: var(--ink-dim); border: 1px solid var(--rule); border-radius: 2px; padding: 7px 10px; cursor: pointer; background: var(--paper); }
.inquiry-form .pp-chip:has(input:checked) { border-color: var(--ink); color: var(--ink); background: #EFECE2; }
.pp-chip input { accent-color: var(--ink); margin: 0; width: 13px; height: 13px; }

/* Footer */
.assurance { margin-top: 36px; }
.assurance .fact-grid { margin-top: 20px; }
.ports-note { margin-top: 20px; font: 400 12.5px/1.7 var(--font-mono); color: var(--ink-dim); }
.footer-contact { margin-top: 14px; }
.footer-contact a { font: 400 12.5px/1.9 var(--font-mono); color: var(--band-gold); text-decoration: none; }
.footer-contact a:hover { text-decoration: underline; }
.site-footer { background: var(--band); color: var(--band-text); padding: 64px 0 80px; }
.site-footer .logo { font: 500 21px/1 var(--font-display); }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.footer-entity { margin-top: 16px; font: 400 12.5px/1.8 var(--font-mono); color: var(--band-dim); }
.footer-h { font: 500 10.5px/1 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--band-dim); margin-bottom: 14px; }
.footer-domains { list-style: none; padding: 0; margin: 0; columns: 2; }
.footer-domains li { margin-bottom: 8px; }
.footer-domains a { font: 400 12.5px/1.5 var(--font-mono); color: var(--band-dim); text-decoration: none; transition: color 120ms ease; }
.footer-domains a:hover { color: var(--band-gold); }
@media (max-width: 860px) { .about-grid, .inquiry-grid, .footer-grid { grid-template-columns: 1fr; } .form-row { grid-template-columns: 1fr; } }
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 640px) {
  section { padding: 72px 0; }
  #hero { padding: 56px 0 0; }
  .hero-grid { padding-bottom: 48px; }
  .fact-item { padding: 22px 24px; }
}

/* Motion (Task 9) */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s var(--ease-out), transform .5s var(--ease-out); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Inquiry form: honeypot + submit status */
/* Off-screen rather than display:none — some bots skip hidden inputs but still
   fill ones that are technically rendered. */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { font: 400 12.5px/1.6 var(--font-mono); margin-top: 12px; padding: 11px 13px; border-radius: 2px; border: 1px solid var(--rule); }
.form-status.ok { border-color: #B8C9AE; background: #F1F5EC; color: #3D5A32; }
.form-status.err { border-color: #D8B5A6; background: #FBF0EA; color: #8A3F22; }
.inquiry-form button[disabled] { opacity: .55; cursor: progress; }