/* ============================================================
   GCAI Technologies — corporate site
   Inherits the Varsia design language ("analyst's terminal meets
   fintech — calm, premium, data-forward") with a GOLD parent accent
   to distinguish the holding brand from Varsia's teal.
   ============================================================ */

:root {
  /* canvas / ink */
  --canvas: #f7f5f0;
  --canvas-2: #faf9f5;
  --canvas-3: #efece4;
  --ink: #0e0e12;
  --ink-2: #14151e;
  --ink-3: #1c1d29;

  /* parent-brand accent (gold) */
  --accent: #c9a84c;
  --accent-2: #8a6d1f;
  --gold: #c9a84c;

  /* neutrals */
  --slate: #6b7280;
  --slate-2: #8a8a9f;
  --slate-3: #a9a9b8;
  --border: #e8e6e0;
  --border-2: #ddd9cf;

  /* type */
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  /* shape */
  --r-sm: 8px;
  --r: 12px;
  --r-lg: 16px;
  --r-xl: 22px;
  --shadow: 0 4px 16px rgba(20, 20, 30, 0.06), 0 1px 3px rgba(20, 20, 30, 0.05);
  --shadow-lg: 0 18px 48px rgba(20, 20, 30, 0.12), 0 4px 12px rgba(20, 20, 30, 0.06);

  --maxw: 1120px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--canvas);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.mono {
  font-family: var(--font-mono);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.display {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}

/* ---- buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}
.btn:hover {
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--ink);
  color: var(--canvas);
}
.btn-primary:hover {
  background: var(--ink-3);
}
.btn-gold {
  background: var(--accent);
  color: var(--ink);
}
.btn-gold:hover {
  background: #d8b85c;
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--border-2);
}
.btn-ghost:hover {
  border-color: var(--ink);
}
.btn-lg {
  font-size: 16px;
  padding: 15px 28px;
}
.btn svg {
  width: 16px;
  height: 16px;
}

/* ---- top nav ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 90;
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  background: color-mix(in oklab, var(--canvas) 86%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}
.wordmark .dot {
  color: var(--accent);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links a {
  font-size: 14.5px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--slate);
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover {
  color: var(--ink);
  background: var(--canvas-3);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ---- hero ---- */
.hero {
  padding: 96px 0 72px;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(38px, 6vw, 66px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  margin: 18px 0 0;
  max-width: 14ch;
}
.hero p.lede {
  margin-top: 22px;
  font-size: clamp(16px, 2.2vw, 19px);
  color: var(--slate);
  max-width: 52ch;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

/* ---- generic section ---- */
.section {
  padding: 80px 0;
}
.section-head {
  max-width: 60ch;
}
.section-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-top: 12px;
}
.section-head p {
  margin-top: 14px;
  color: var(--slate);
  font-size: 17px;
}

/* ---- value props grid ---- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 44px;
}
.card {
  background: var(--canvas-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 26px;
  box-shadow: var(--shadow);
}
.card .num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-2);
}
.card h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  margin: 12px 0 8px;
}
.card p {
  color: var(--slate);
  font-size: 14.5px;
}

/* ---- products ---- */
.products {
  background: var(--ink);
  color: #ececf4;
}
.products .section-head h2 {
  color: #fff;
}
.products .section-head p {
  color: var(--slate-3);
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 44px;
}
.product-card {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--r-xl);
  background: var(--ink-2);
  padding: 30px;
  display: flex;
  flex-direction: column;
}
.product-card .pc-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  color: #fff;
}
.product-card .pc-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.product-card p {
  color: var(--slate-3);
  font-size: 15px;
  margin: 10px 0 22px;
  flex: 1;
}
.product-card.soon {
  align-items: flex-start;
  justify-content: center;
  border-style: dashed;
  color: var(--slate-2);
}
.product-card.soon .pc-name {
  color: var(--slate-2);
}

/* ---- contact ---- */
.contact {
  text-align: center;
}
.contact h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4vw, 38px);
  letter-spacing: -0.02em;
}
.contact p {
  color: var(--slate);
  margin: 14px auto 26px;
  max-width: 46ch;
}
.contact .email {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--accent-2);
}

/* ---- footer ---- */
.footer {
  background: var(--ink);
  color: #cfcfe0;
  padding: 56px 0 30px;
}
.footer-top {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer .wordmark {
  color: #fff;
}
.footer-tagline {
  color: var(--slate-2);
  font-size: 14px;
  max-width: 280px;
  margin-top: 14px;
}
.footer-links {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
}
.footer-links a {
  font-size: 14px;
  color: #b9b9c8;
  transition: color 0.15s;
}
.footer-links a:hover {
  color: #fff;
}
.footer-note {
  font-size: 13px;
  color: var(--slate-2);
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  line-height: 1.55;
}
.footer-note strong {
  color: #d9d9e6;
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-between;
  padding-top: 22px;
  font-size: 13px;
  color: var(--slate-2);
}

/* ---- legal pages (privacy / terms) ---- */
.legal {
  max-width: 760px;
  padding-top: 64px;
  padding-bottom: 88px;
}
.legal h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 40px;
  letter-spacing: -0.02em;
}
.legal .updated {
  margin-top: 10px;
  font-size: 14px;
  color: var(--slate-2);
}
.legal h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 21px;
  margin: 34px 0 10px;
}
.legal p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-2);
  margin-top: 12px;
}
.legal a {
  color: var(--accent-2);
}

/* ---- responsive ---- */
@media (max-width: 820px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .product-grid {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
}