/* Palette is a placeholder until a brand exists: indigo to teal on a cool neutral. All text pairs meet WCAG AA. */
:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --brand: #4338ca;        /* indigo: links, buttons */
  --brand-hover: #3730a3;
  --brand-contrast: #ffffff;
  --accent: #0891b2;       /* teal: gradients and focus ring only, never text */
  --radius: 12px;
  --max: 72rem;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --surface: #111a2e;
    --text: #e5e7eb;
    --muted: #a3aec2;
    --border: #1f2a44;
    --brand: #a5b4fc;
    --brand-hover: #c7d2fe;
    --brand-contrast: #0b1120;
  }
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 1rem/1.65 var(--font);
}

main { flex: 1; }

.container {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: 1rem;
}

a { color: var(--brand); text-underline-offset: 0.2em; }
a:hover { color: var(--brand-hover); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  padding: 0.5rem 1rem;
  background: var(--brand);
  color: var(--brand-contrast);
  border-radius: 0 0 var(--radius) var(--radius);
  z-index: 10;
}
.skip-link:focus { top: 0; }

/* Header and footer */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-block: 0.875rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--text);
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.brand:hover { color: var(--text); }
.brand strong { font-weight: 700; }

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-list a { color: var(--muted); font-weight: 500; text-decoration: none; }
.nav-list a:hover,
.nav-list a[aria-current="page"] { color: var(--text); text-decoration: underline; text-underline-offset: 0.35em; }

.site-footer {
  margin-top: 4rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9375rem;
}
.footer-inner {
  display: grid;
  gap: 1rem 2rem;
  padding-block: 2rem;
}
.footer-contact { display: flex; flex-wrap: wrap; gap: 0.5rem 1.75rem; font-weight: 600; }
.copyright { margin: 0; }

@media (min-width: 48rem) {
  .footer-inner { grid-template-columns: 1fr auto; align-items: start; }
  .copyright { grid-column: 1 / -1; }
}

/* Home */
.hero {
  padding-block: clamp(4rem, 12vw, 8rem);
  background:
    radial-gradient(60rem 28rem at 85% -10%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%),
    radial-gradient(50rem 26rem at 0% 0%, color-mix(in srgb, var(--brand) 18%, transparent), transparent 70%);
}
.eyebrow {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.hero h1 {
  max-width: 18ch;
  margin: 0 0 1.25rem;
  font-size: clamp(2.5rem, 7vw, 4.25rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}
.lead { max-width: 40rem; margin: 0 0 2rem; color: var(--muted); font-size: 1.25rem; }

.button {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  background: var(--brand);
  color: var(--brand-contrast);
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
}
.button:hover { background: var(--brand-hover); color: var(--brand-contrast); }

/* Document pages (privacy, terms) */
.page { padding-block: 3rem 0; }
.prose { max-width: 52rem; }
.prose h1 { margin: 0 0 1.5rem; font-size: clamp(2rem, 5vw, 2.75rem); line-height: 1.15; letter-spacing: -0.02em; }
.prose h2 { margin: 2.5rem 0 0.75rem; font-size: 1.5rem; line-height: 1.25; }
.prose p, .prose li { max-width: 70ch; }
.prose ul { padding-left: 1.25rem; }

.table-wrap { overflow-x: auto; margin: 1.5rem 0; border: 1px solid var(--border); border-radius: var(--radius); }
.data-table { width: 100%; min-width: 42rem; border-collapse: collapse; font-size: 0.9375rem; }
.data-table th, .data-table td { padding: 0.75rem 1rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--border); }
.data-table thead th { background: var(--surface); }
.data-table tbody tr:last-child > * { border-bottom: 0; }