/* ─────────────────────────────────────────
   GSY AI — Global Styles
   Palette: Navy #1a2744, Blue #2eaadc, Paper #fdfcf8
───────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;0,8..60,700;1,8..60,400;1,8..60,600&family=Source+Sans+3:wght@300;400;500;600;700&display=swap');

:root {
  --navy:      #1a2744;
  --navy-mid:  #243562;
  --blue:      #2eaadc;
  --blue-pale: #e8f6fd;
  --paper:     #fdfcf8;
  --paper-mid: #f3f0e8;
  --rule:      #ddd8cf;
  --ink:       #1a2744;
  --soft:      #3a4d6b;
  --mute:      #7a8aa0;
  --serif:     'Source Serif 4', Georgia, serif;
  --sans:      'Source Sans 3', 'Helvetica Neue', Arial, sans-serif;
  --ease:      cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --radius:    3px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
ul, ol { list-style: none; }

/* ── Typography ── */
.eyebrow {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
}

h1 {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 600;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--navy);
}

h2 {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--navy);
}

h3 {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--mute);
}

/* ── Layout ── */
.wrap {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 2rem;
}
.wrap--narrow {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  background: rgba(253,252,248,0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.nav.scrolled {
  border-bottom-color: var(--rule);
  background: rgba(253,252,248,0.98);
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
}
.nav__logo img {
  width: 30px;
  height: 30px;
}
.nav__logo-text {
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--navy);
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav__links a {
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--soft);
  letter-spacing: 0.02em;
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--blue); }
.nav__cta {
  display: inline-flex;
  align-items: center;
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.5rem 1.2rem;
  border: 1.5px solid var(--navy);
  border-radius: var(--radius);
  color: var(--navy) !important;
  transition: all 0.2s var(--ease);
}
.nav__cta:hover {
  background: var(--navy);
  color: var(--paper) !important;
  border-color: var(--navy);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius);
  transition: all 0.2s var(--ease);
  cursor: pointer;
  border: 1.5px solid transparent;
  text-decoration: none;
}
.btn--primary {
  background: var(--navy);
  color: var(--paper);
  border-color: var(--navy);
}
.btn--primary:hover {
  background: var(--navy-mid);
  border-color: var(--navy-mid);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(26,39,68,0.18);
}
.btn--outline {
  background: transparent;
  color: var(--navy);
  border-color: var(--rule);
}
.btn--outline:hover {
  border-color: var(--navy);
  background: var(--paper-mid);
}

/* ── Sections ── */
section { padding: 6rem 0; }
section.section--sm { padding: 4rem 0; }
section.section--lg { padding: 8rem 0; }

/* ── Dividers ── */
.hr { border: none; border-top: 1px solid var(--rule); }

/* ── Footer ── */
.footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--rule);
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer__copy {
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--mute);
}
.footer__links {
  display: flex;
  gap: 1.5rem;
}
.footer__links a {
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--mute);
  transition: color 0.2s;
}
.footer__links a:hover { color: var(--blue); }

/* ── Responsive ── */
@media (max-width: 700px) {
  .nav__links { display: none; }
  .wrap, .wrap--narrow { padding: 0 1.25rem; }
  section { padding: 4rem 0; }
  section.section--lg { padding: 5rem 0; }
}