/* GAIO Tech — shared marketing site chrome (index, blog, login) */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body.marketing {
  --font-body: ui-monospace, 'IBM Plex Mono', 'JetBrains Mono', Menlo, monospace;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: clamp(0.9375rem, 0.875rem + 0.25vw, 1.0625rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.marketing a { color: inherit; text-underline-offset: 3px; }
body.marketing a:hover { color: var(--accent); }

body.marketing img,
body.marketing svg { display: block; max-width: 100%; }

body.marketing.grid-bg {
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: -1px -1px;
}

/* Only site chrome — not in-page headers (e.g. blog article hero) */
body.marketing > header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklch, var(--surface) 92%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: var(--rule);
}

body.marketing .site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.875rem var(--pad-x);
}

body.marketing .logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--fg);
  flex-shrink: 0;
}

body.marketing .logo svg {
  height: 1.875rem;
  width: auto;
  display: block;
}

body.marketing .nav-links {
  display: none;
  list-style: none;
  gap: 1.5rem;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

body.marketing .nav-links a { text-decoration: none; }
body.marketing .nav-links a:hover { text-decoration: underline; }
body.marketing .nav-links a[aria-current="page"] { color: var(--brand); text-decoration: underline; }

body.marketing .nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

body.marketing .theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: var(--rule);
  border-radius: var(--radius-sm);
  color: var(--fg);
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s, color 0.15s;
}

body.marketing .theme-toggle:hover {
  background: var(--fg);
  color: var(--surface);
}

body.marketing .theme-toggle svg { width: 18px; height: 18px; }
body.marketing .theme-toggle .icon-sun { display: none; }
body.marketing .theme-toggle .icon-moon { display: block; }
[data-theme="dark"] body.marketing .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] body.marketing .theme-toggle .icon-moon { display: none; }

body.marketing .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 1.25rem;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  border: var(--rule);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

body.marketing .btn:hover { background: var(--fg); color: var(--surface); }

body.marketing .btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: oklch(100% 0 0);
}

body.marketing .btn-primary:hover {
  background: color-mix(in oklch, var(--accent) 85%, var(--fg));
  border-color: color-mix(in oklch, var(--accent) 85%, var(--fg));
  color: oklch(100% 0 0);
}

body.marketing .menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: var(--rule);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

body.marketing .menu-toggle span {
  display: block;
  height: 2px;
  background: var(--fg);
  transition: transform 0.2s, opacity 0.2s;
}

body.marketing .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.marketing .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
body.marketing .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

body.marketing .mobile-drawer {
  display: none;
  position: fixed;
  inset: 57px 0 0 0;
  z-index: 99;
  background: var(--surface);
  border-top: var(--rule);
  padding: 1.5rem var(--pad-x);
  flex-direction: column;
  gap: 0;
}

body.marketing .mobile-drawer.open { display: flex; }

body.marketing .mobile-drawer a {
  display: block;
  padding: 1rem 0;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}

body.marketing .site-footer {
  padding: var(--pad-y) var(--pad-x);
  background: var(--panel);
  color: var(--panel-fg);
}

body.marketing .footer-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 768px) {
  body.marketing .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; }
  body.marketing .nav-links { display: flex; }
  body.marketing .menu-toggle { display: none; }
}

body.marketing .footer-brand h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin-bottom: 1.5rem;
}

body.marketing .footer-brand p {
  color: color-mix(in oklch, var(--panel-fg) 60%, transparent);
  max-width: 36ch;
  margin-bottom: 1.5rem;
}

body.marketing .footer-links h4,
body.marketing .footer-nav h4 {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: color-mix(in oklch, var(--panel-fg) 50%, transparent);
  margin-bottom: 1rem;
}

body.marketing .footer-links ul,
body.marketing .footer-nav ul {
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

body.marketing .footer-links a,
body.marketing .footer-nav a {
  color: var(--panel-fg);
  text-decoration: none;
  font-size: 0.9375rem;
}

body.marketing .footer-links a:hover,
body.marketing .footer-nav a:hover { color: var(--brand); }

body.marketing .footer-bottom {
  max-width: 1280px;
  margin: 3rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid color-mix(in oklch, var(--panel-fg) 15%, transparent);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: color-mix(in oklch, var(--panel-fg) 45%, transparent);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
}