/* Steelmoth — glass, graphite & champagne.
   Tokens reflect the brand palette: warm low-saturation neutrals,
   metal/champagne accents only, no colored highlights. */

:root {
  /* canonical palette */
  --sm-porcelain:     #FEFAF6;
  --sm-paper:         #FBF8F2;
  --sm-ivory:         #F6F2EE;
  --sm-glass:         #EAE4DE;
  --sm-mist:          #DED6CC;
  --sm-champagne:     #C7BBAE;
  --sm-antique:       #A49789;
  --sm-silver-glow:   #EEE9E0;
  --sm-soft-steel:    #96938E;
  --sm-smoke:         #72716F;
  --sm-steel-ink:     #303231;
  --sm-graphite:      #232525;
  --sm-carbon:        #171918;
  --sm-charcoal:      #1D2020;
  --sm-blue-steel:    #3F4548;
  --sm-metal:         #4C4D4C;

  /* theme roles — dark (default) */
  --bg:               var(--sm-carbon);
  --bg-soft:          var(--sm-charcoal);
  --surface:          var(--sm-charcoal);
  --surface-2:        var(--sm-graphite);
  --ink:              var(--sm-silver-glow);
  --ink-2:            #BAB2A8;
  --ink-3:            #8A8580;
  --ink-faint:        #524F4B;
  --line:             #2A2B2A;
  --line-strong:      #3A3A38;
  --line-metal:       var(--sm-champagne);

  --font-display:     'Avenir Next', 'Raleway', 'Helvetica Neue', Helvetica, sans-serif;
  --font-body:        'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-mono:        'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --gutter:           40px;
  --maxw:             1240px;

  --tr:               220ms cubic-bezier(.2,.7,.2,1);
}

:root[data-theme="light"] {
  --bg:               var(--sm-porcelain);
  --bg-soft:          var(--sm-paper);
  --surface:          var(--sm-paper);
  --surface-2:        var(--sm-ivory);
  --ink:              var(--sm-steel-ink);
  --ink-2:            var(--sm-smoke);
  --ink-3:            var(--sm-soft-steel);
  --ink-faint:        var(--sm-mist);
  --line:             var(--sm-mist);
  --line-strong:      var(--sm-antique);
  --line-metal:       var(--sm-antique);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-feature-settings: 'ss01', 'cv11', 'tnum';
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
  transition: background var(--tr), color var(--tr);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; padding: 0; }
img { display: block; max-width: 100%; }
hr { border: 0; height: 1px; background: var(--line); margin: 0; }
::selection { background: var(--sm-champagne); color: var(--sm-carbon); }

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

/* ===== TYPE ===== */
h1, h2, h3, h4, h5, p { margin: 0; }

/* Wide-spaced caps — the brand vocabulary */
.caps {
  font-family: var(--font-display);
  font-weight: 300;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 12px;
  color: var(--ink-3);
}
.caps-strong {
  font-family: var(--font-display);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 13px;
  color: var(--ink);
}

/* Section index numeral (I, II, III) — typeset like a print folio */
.folio {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--ink-3);
  text-transform: uppercase;
}

.h-display {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(48px, 6.4vw, 96px);
  line-height: 0.98;
  letter-spacing: -0.025em;
  color: var(--ink);
  text-wrap: balance;
}
.h-section {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(32px, 3.6vw, 56px);
  line-height: 1.04;
  letter-spacing: -0.015em;
  color: var(--ink);
  text-wrap: balance;
}
.h-card {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.lede {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: clamp(18px, 1.4vw, 21px);
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 60ch;
  text-wrap: pretty;
}
.body { color: var(--ink-2); max-width: 62ch; text-wrap: pretty; font-size: 16px; line-height: 1.65; }
.small { font-size: 13px; color: var(--ink-3); }
.mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-3);
}

/* The wordmark — wide-tracked, raleway light, exact reference */
.wordmark {
  font-family: 'Raleway', 'Avenir Next', 'Helvetica Neue', sans-serif;
  font-weight: 200;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--ink);
}
.tagline {
  font-family: 'Raleway', 'Avenir Next', sans-serif;
  font-weight: 300;
  letter-spacing: 0.14em;
  color: var(--ink-2);
}

/* ===== NAV ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.nav-row {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}
.brand { display: inline-flex; align-items: center; gap: 14px; }
.brand-mark {
  width: 28px; height: 16px;
  display: inline-grid; place-items: center;
  overflow: visible;
}
.brand-mark img { width: 100%; height: 100%; object-fit: contain; }
.brand-word {
  font-family: 'Raleway', 'Avenir Next', sans-serif;
  font-weight: 300;
  font-size: 14px;
  letter-spacing: 0.34em;
  color: var(--ink);
}

.nav-links { display: flex; align-items: center; gap: 36px; }
.nav-link {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--ink-2);
  position: relative; padding: 6px 0;
  transition: color var(--tr);
  letter-spacing: -0.005em;
}
.nav-link:hover { color: var(--ink); }
.nav-link.active { color: var(--ink); }
.nav-link.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -4px;
  height: 1px; background: var(--line-metal);
}

.nav-right { display: flex; align-items: center; gap: 20px; }
.theme-toggle {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  color: var(--ink-3);
  transition: color var(--tr);
}
.theme-toggle:hover { color: var(--ink); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  height: 44px; padding: 0 22px;
  font-family: var(--font-body);
  font-size: 14px; font-weight: 500;
  letter-spacing: -0.005em;
  border-radius: 0;
  transition: background var(--tr), color var(--tr), border-color var(--tr);
  white-space: nowrap;
}
.btn-primary {
  background: var(--ink);
  color: var(--bg);
  border: 1px solid var(--ink);
}
.btn-primary:hover { background: var(--sm-champagne); border-color: var(--sm-champagne); color: var(--sm-carbon); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-strong);
}
.btn-ghost:hover { border-color: var(--ink); }
.btn-lg { height: 52px; padding: 0 26px; font-size: 15px; }

.linklike {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--ink);
  font-size: 14px; font-weight: 500;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line-metal);
  transition: color var(--tr), border-color var(--tr);
}
.linklike:hover { color: var(--sm-champagne); }
.linklike .arr { transition: transform var(--tr); }
.linklike:hover .arr { transform: translateX(4px); }

/* ===== SECTION SCAFFOLD ===== */
.section { padding: 120px 0; }
.section.bordered { border-top: 1px solid var(--line); }
.section-head {
  display: grid; gap: 24px; margin-bottom: 72px;
  max-width: 760px;
}
.section-head .folio-row {
  display: flex; align-items: center; gap: 20px;
}
.section-head .folio-row .rule {
  flex: 1; height: 1px; background: var(--line); max-width: 80px;
}

/* The thin metal hairline — the brand's signature divider */
.metal-rule {
  height: 1px; background: var(--line-metal);
  width: 56px;
}
.metal-rule.full { width: 100%; }

/* ===== FOOTER (inverted from page theme) ===== */
/* dark theme → light footer; light theme → dark footer */
.footer {
  padding: 96px 0 40px;
  --f-bg: var(--sm-ivory);
  --f-ink: var(--sm-steel-ink);
  --f-ink-2: var(--sm-smoke);
  --f-ink-3: var(--sm-antique);
  --f-line: var(--sm-mist);
  --f-metal: var(--sm-antique);
  background: var(--f-bg);
  color: var(--f-ink);
  transition: background var(--tr), color var(--tr);
}
:root[data-theme="light"] .footer {
  --f-bg: var(--sm-carbon);
  --f-ink: var(--sm-silver-glow);
  --f-ink-2: #BAB2A8;
  --f-ink-3: #8A8580;
  --f-line: #2A2B2A;
  --f-metal: var(--sm-champagne);
}
.footer .brand-word { color: var(--f-ink); }
.footer .brand-mark img { filter: var(--f-mark-filter, none); }
/* swap mark image to match inverted bg */
.footer .brand-mark { background: transparent; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 64px;
}
.footer-col h5 {
  font-family: var(--font-display);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 11px;
  color: var(--f-ink-3);
  margin-bottom: 22px;
}
.footer-col a {
  display: block;
  color: var(--f-ink-2);
  font-size: 14px;
  padding: 5px 0;
  transition: color var(--tr);
}
.footer-col a:hover { color: var(--f-ink); }
.footer-tagline {
  color: var(--f-ink-2);
  font-size: 14px;
  line-height: 1.6;
  max-width: 32ch;
  margin-top: 18px;
}
.footer-corp {
  color: var(--f-ink-3);
  font-size: 12px;
  line-height: 1.7;
  max-width: 38ch;
  margin-top: 24px;
}
.footer-corp a { display: inline; color: var(--f-ink-2); padding: 0; border-bottom: 1px solid var(--f-metal); }
.footer-corp a:hover { color: var(--f-ink); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: baseline;
  border-top: 1px solid var(--f-line);
  margin-top: 64px; padding-top: 24px;
  color: var(--f-ink-3); font-size: 12px;
  letter-spacing: 0.04em;
  flex-wrap: wrap; gap: 16px;
}
.footer-bottom .trio {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.32em;
  color: var(--f-ink-3);
}

/* ===== ENTRY ANIMATION ===== */
.page-in { animation: pageIn 480ms cubic-bezier(.2,.7,.2,1) both; }
@keyframes pageIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== FORM ===== */
.field { display: grid; gap: 10px; }
.field label {
  font-size: 11px;
  font-family: var(--font-display);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--ink-3);
}
.field input, .field textarea, .field select {
  background: transparent;
  color: var(--ink);
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  padding: 12px 0;
  font: inherit;
  font-family: var(--font-body);
  font-size: 16px;
  transition: border-color var(--tr);
  border-radius: 0;
}
.field input::placeholder, .field textarea::placeholder { color: var(--ink-faint); }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--sm-champagne);
}
.field textarea { resize: vertical; min-height: 92px; }

/* ===== HELPERS ===== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.row { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.stack { display: grid; gap: 16px; }

@media (max-width: 960px) {
  :root { --gutter: 24px; }
  .nav-links { display: none; }
  .section { padding: 80px 0; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}