/* ==========================================================================
   Trace Finance — marketing site styles (dark direction)
   Built strictly on assets/trace-tokens.css (Trace Design System)
   ========================================================================== */

:root {
  --site-bg: var(--t-surface-0);          /* #121212 */
  --site-panel: var(--t-surface-1);       /* #1b1b1b */
  --site-panel-2: var(--t-surface-2);     /* #2a2a2a */
  --site-border: #2a2a2a;
  --site-border-soft: #222222;
  --site-fg: var(--t-white);
  --site-fg-2: var(--t-slate-400);
  --site-fg-3: var(--t-slate-500);
  --accent: var(--t-brand-green);
  --accent-hover: var(--t-brand-green-200);
  --maxw: 1140px;
}

html { scroll-behavior: smooth; }
body {
  background: var(--site-bg);
  color: var(--site-fg);
  font-family: var(--t-font-sans);
  font-size: 16px;
  line-height: var(--t-lh-body);
  margin: 0;
  -webkit-font-smoothing: antialiased;
}
::selection { background: rgba(0,242,177,.28); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 56px; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(18,18,18,.92);
  border-bottom: 1px solid var(--site-border-soft);
}
.site-header .wrap {
  display: flex; align-items: center; gap: 32px;
  height: 64px;
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-img { height: 18px; width: auto; display: block; }
/* The wordmark's chevron mark sits high in the SVG, so the "trace finance"
   text reads ~2px lower than the nav items. Nudge the header logo up to
   optically align it with the nav row (footer logo is intentionally left). */
.site-header .logo-img { transform: translateY(-2px); }
.logo .dot {
  width: 26px; height: 26px; border-radius: 7px; background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--t-font-display); font-weight: 700; font-size: 16px; color: var(--t-ink);
}
.logo .word {
  font-family: var(--t-font-display); font-weight: 600; font-size: 20px;
  letter-spacing: -0.01em; color: var(--site-fg);
}
.nav-links { display: flex; align-items: center; gap: 4px; flex: 1; }
.nav-links a {
  white-space: nowrap;
  font-size: 14px; font-weight: 500; color: var(--site-fg-2);
  text-decoration: none; padding: 8px 12px; border-radius: var(--t-radius-md);
  transition: color var(--t-dur-base) var(--t-ease-standard), background var(--t-dur-base) var(--t-ease-standard);
}
.nav-links a:hover { color: var(--site-fg); background: var(--site-panel-2); }
.nav-links a.active { color: var(--site-fg); font-weight: 600; }
.nav-cta { display: flex; align-items: center; gap: 12px; }

/* Language switcher */
.lang {
  display: flex; border: 1px solid var(--site-border); border-radius: var(--t-radius-md);
  overflow: hidden; font-size: 12px; font-weight: 600;
}
.lang button {
  background: transparent; border: 0; color: var(--site-fg-3); padding: 5px 10px;
  font: inherit; cursor: pointer; letter-spacing: .04em;
  transition: background var(--t-dur-fast) var(--t-ease-standard);
}
.lang button.on { background: var(--site-panel-2); color: var(--site-fg); }
.lang button:not(.on):hover { color: var(--site-fg-2); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px; white-space: nowrap;
  font-family: var(--t-font-sans); font-weight: 500; font-size: 14px; line-height: 1.3;
  padding: 10px 18px; border-radius: var(--t-radius-md);
  border: 1px solid transparent; cursor: pointer; text-decoration: none;
  transition: background var(--t-dur-base) var(--t-ease-standard), border-color var(--t-dur-base) var(--t-ease-standard);
}
.btn:focus-visible { outline: none; box-shadow: var(--t-shadow-focus); }
.btn svg { width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.btn-brand { background: var(--accent); color: var(--t-ink); }
.btn-brand:hover { background: var(--accent-hover); }
.btn-outline { background: transparent; color: var(--site-fg); border-color: var(--site-border); }
.btn-outline:hover { background: var(--site-panel-2); }
.btn-ghost { background: transparent; color: var(--site-fg-2); }
.btn-ghost:hover { color: var(--site-fg); background: var(--site-panel-2); }
.btn-lg { padding: 13px 24px; font-size: 15px; }

/* ===== Type helpers (dark overrides) ===== */
h1, h2, h3 { color: var(--site-fg); margin: 0; }
.eyebrow {
  font-family: var(--t-font-sans); font-weight: 600; font-size: 12px;
  letter-spacing: .1em; text-transform: uppercase; color: var(--accent);
  display: flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--accent); }
.section-sub { font-size: 17px; color: var(--site-fg-2); max-width: 560px; text-wrap: pretty; margin: 0; }

/* ===== Sections ===== */
.section { padding: 104px 0; }
.section + .section { border-top: 1px solid var(--site-border-soft); }
.section-head { display: flex; flex-direction: column; gap: 16px; margin-bottom: 56px; }
.section-head h2 {
  font-family: var(--t-font-display); font-weight: 500;
  font-size: var(--t-fs-1000); line-height: var(--t-lh-display); letter-spacing: -0.01em;
  max-width: 640px; text-wrap: pretty;
}
.section-head.split { flex-direction: row; align-items: flex-end; justify-content: space-between; gap: 40px; }
.section-head.split > div { display: flex; flex-direction: column; gap: 16px; }

/* ===== Cards ===== */
.card {
  background: var(--site-panel); border: 1px solid var(--site-border);
  border-radius: var(--t-radius-lg); padding: 32px;
  transition: border-color var(--t-dur-base) var(--t-ease-standard);
}
.card:hover { border-color: #3a3a3a; }
.card h3 { font-family: var(--t-font-display); font-weight: 500; font-size: 20px; line-height: var(--t-lh-ui); }
.card p { font-size: 14.5px; color: var(--site-fg-2); margin: 0; text-wrap: pretty; }
.card .num {
  font-family: var(--t-font-mono); font-size: 12px; color: var(--site-fg-3); letter-spacing: .06em;
}
.icon-tile {
  width: 40px; height: 40px; border-radius: var(--t-radius-md);
  background: var(--site-panel-2); border: 1px solid var(--site-border);
  display: flex; align-items: center; justify-content: center; color: var(--accent);
}
.icon-tile svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ===== Chips / status ===== */
.chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; white-space: nowrap;
  font-size: 12px; font-weight: 500; border-radius: var(--t-radius-sm);
  border: 1px solid var(--site-border); background: var(--site-panel-2); color: var(--site-fg-2);
}
.chip .pip { width: 6px; height: 6px; border-radius: 50%; background: var(--site-fg-3); }
.chip.ok { border-color: rgba(0,242,177,.4); background: rgba(0,242,177,.08); color: var(--accent); }
.chip.ok .pip { background: var(--accent); }

/* ===== Image-slot placeholders (dark theme) ===== */
image-slot {
  --slot-fg: var(--t-slate-400);
  --slot-fg-dim: rgba(255,255,255,.3);
  --slot-fg-strong: rgba(255,255,255,.85);
  --slot-bg: rgba(255,255,255,.04);
  --slot-ring: #3f3f3f;
}

/* ===== Mono numbers ===== */
.mono { font-family: var(--t-font-mono); }

/* ===== Footer ===== */
.site-footer { border-top: 1px solid var(--site-border-soft); padding: 64px 0 48px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 48px; }
.footer-col h4 {
  font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--site-fg-3); margin: 0 0 16px;
}
.footer-col a {
  display: block; font-size: 14px; color: var(--site-fg-2); text-decoration: none; padding: 5px 0;
  transition: color var(--t-dur-base) var(--t-ease-standard);
}
.footer-col a:hover { color: var(--site-fg); }
.footer-legal {
  margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--site-border-soft);
  font-size: 12px; line-height: 1.6; color: var(--site-fg-3); max-width: 820px; text-wrap: pretty;
}

/* ===== Reveal on scroll ===== */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s var(--t-ease-standard), transform .5s var(--t-ease-standard); }
  .reveal.in { opacity: 1; transform: none; }
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .wrap { padding: 0 28px; }
  .nav-links { display: none; }
  .section { padding: 64px 0; }
  .section-head h2 { font-size: var(--t-fs-800); }
  .section-head.split { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}