/* AK AI Operations LLC — editorial credibility site */

:root {
  --bg: #FFFFFF;
  --bg-elev: #FAFAFA;
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --rule: #E2E2E2;
  --accent: #B8945F;
  --accent-deep: #8a6c3d;
  --serif: Georgia, "Iowan Old Style", "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --measure: 38rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: border-color 120ms ease, color 120ms ease;
}

a:hover, a:focus {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* Header / nav */

.site-header {
  border-bottom: 1px solid var(--rule);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(8px);
}

.nav {
  max-width: 64rem;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  gap: 1.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav a {
  color: var(--ink-soft);
  border-bottom: none;
}

.nav a:hover, .nav a:focus {
  color: var(--accent-deep);
}

/* Main layout */

main {
  width: 100%;
}

/* Hero */

.hero {
  text-align: center;
  padding: 6rem 1.5rem 5rem;
  border-bottom: 1px solid var(--rule);
}

.logo {
  max-width: 360px;
  width: 70%;
  height: auto;
  display: block;
  margin: 0 auto 2.5rem;
}

.tagline {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.35rem;
  color: var(--ink);
  max-width: var(--measure);
  margin: 0 auto 2rem;
  line-height: 1.4;
}

.lead {
  max-width: var(--measure);
  margin: 0 auto;
  color: var(--ink-soft);
  font-size: 1.02rem;
}

/* Sections */

.section {
  padding: 4.5rem 1.5rem;
  border-bottom: 1px solid var(--rule);
}

.section:last-of-type {
  border-bottom: none;
}

.section-inner {
  max-width: var(--measure);
  margin: 0 auto;
}

.section--alt {
  background: #F5F5F5;
}

.section h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin: 0 0 2rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--rule);
}

.section h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.6rem;
  line-height: 1.25;
  margin: 0 0 1.25rem;
  color: var(--ink);
}

.section p {
  margin: 0 0 1.25rem;
  color: var(--ink);
}

.section p:last-child {
  margin-bottom: 0;
}

.section strong {
  font-weight: 600;
  color: var(--accent-deep);
}

/* Contact emphasis */

.contact .email {
  font-family: var(--serif);
  font-size: 1.25rem;
  margin-top: 1.5rem;
}

.contact .email a {
  border-bottom: 1px solid var(--accent);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--rule);
  margin-top: 2rem;
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.82rem;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

.site-footer p { margin: 0; }

/* Responsive */

@media (max-width: 640px) {
  body { font-size: 16px; }
  .nav {
    justify-content: center;
    gap: 1rem;
    font-size: 0.72rem;
  }
  .hero { padding: 4rem 0 3.5rem; }
  .logo { width: 80%; }
  .tagline { font-size: 1.15rem; }
  .section { padding: 3rem 1.5rem; }
  .section h3 { font-size: 1.35rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}