/* Static marketing / legal — Tracking brand palette, light & dark */

:root {
  --tracking-navy: #0e1a3a;
  --tracking-gold: #b8922a;
  --tracking-mulberry: #8b2f5f;
  --tracking-gold-light: #c9a96e;
  --tracking-linen: #f5f4f0;
  --tracking-warm-slate: #7a7266;
  --tracking-navy-deep: #0a1228;
  --tracking-navy-mid: #152a52;

  --font: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", sans-serif;
  --measure: 42rem;
  --radius: 12px;
}

/* Light (default) */
html,
html[data-theme="light"] {
  color-scheme: light;

  --bg: var(--tracking-linen);
  --surface: #ffffff;
  --text: var(--tracking-navy);
  --muted: var(--tracking-warm-slate);
  --accent: var(--tracking-mulberry);
  --accent-hover: #6f2449;
  --brand: var(--tracking-gold);
  --brand-soft: var(--tracking-gold-light);
  --border: #d8d2c8;
  --header-bg: var(--tracking-navy);
  --header-fg: var(--tracking-linen);
  --header-link: rgba(245, 244, 240, 0.88);
  --header-link-hover: var(--tracking-gold-light);
  --toc-bg: #f3efe8;
  --toc-border: #e0d6c8;
  --shadow: 0 1px 3px rgba(14, 26, 58, 0.06), 0 8px 24px rgba(14, 26, 58, 0.06);
  --shadow-hover: 0 4px 12px rgba(14, 26, 58, 0.08), 0 16px 40px rgba(14, 26, 58, 0.08);
  --card-link: var(--tracking-gold);
  --card-link-hover: #9a7a24;
}

/* Dark */
html[data-theme="dark"] {
  color-scheme: dark;

  --bg: var(--tracking-navy-deep);
  --surface: var(--tracking-navy-mid);
  --text: var(--tracking-linen);
  --muted: #b8aea2;
  --accent: #d4a0b8;
  --accent-hover: #e8c4d4;
  --brand: var(--tracking-gold-light);
  --brand-soft: #dbb97e;
  --border: #2a3d6b;
  --header-bg: #060d1f;
  --header-fg: var(--tracking-linen);
  --header-link: rgba(245, 244, 240, 0.82);
  --header-link-hover: var(--tracking-gold-light);
  --toc-bg: #1a2d52;
  --toc-border: #2a3d6b;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.2), 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.3), 0 16px 40px rgba(0, 0, 0, 0.35);
  --card-link: var(--tracking-gold-light);
  --card-link-hover: #e8cc9a;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s ease, color 0.2s ease;
}

a {
  color: var(--accent);
  text-decoration-thickness: 0.06em;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent-hover);
}

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 999;
  padding: 0.75rem 1rem;
  background: var(--brand);
  color: var(--tracking-navy);
  font-weight: 600;
}

html[data-theme="dark"] .skip-link {
  color: var(--tracking-navy-deep);
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.site-header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header__inner {
  max-width: 72rem;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-brand {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.site-brand a {
  color: var(--header-fg);
  text-decoration: none;
}

.site-brand a:hover {
  color: var(--header-link-hover);
}

.site-header__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
}

.site-nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--header-link);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--header-link-hover);
}

.site-nav a[aria-current="page"] {
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.theme-toggle-btn {
  border: 1px solid rgba(245, 244, 240, 0.35);
  background: transparent;
  color: var(--header-fg);
  font-size: 0.8rem;
  font-family: inherit;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  line-height: 1.4;
  cursor: pointer;
}

.theme-toggle-btn:hover {
  background: rgba(245, 244, 240, 0.1);
  border-color: var(--tracking-gold-light);
  color: var(--header-link-hover);
}

.theme-toggle-btn:focus-visible {
  outline: 2px solid var(--tracking-gold-light);
  outline-offset: 2px;
}

.site-main {
  flex: 1;
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3rem;
}

.hero {
  text-align: center;
  padding: 2rem 0 2.5rem;
  max-width: 36rem;
  margin: 0 auto 2rem;
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
  color: var(--text);
}

.hero .lede {
  font-size: 1.15rem;
  color: var(--muted);
  margin: 0;
}

.hero .lede strong {
  color: var(--accent);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--brand-soft);
}

.card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: var(--text);
}

.card p {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.card .card-link {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--card-link);
  text-decoration: none;
}

.card .card-link:hover {
  color: var(--card-link-hover);
  text-decoration: underline;
}

.prose {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  box-shadow: var(--shadow);
  max-width: 52rem;
}

.prose h1 {
  margin-top: 0;
  font-size: 1.85rem;
  letter-spacing: -0.02em;
  color: var(--text);
}

.prose h2 {
  font-size: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 0.65rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
  color: var(--text);
}

.prose h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

.prose h3 {
  font-size: 1.05rem;
  margin-top: 1.35rem;
  margin-bottom: 0.4rem;
  color: var(--text);
}

.prose p,
.prose ul,
.prose ol {
  margin: 0.65rem 0;
  color: var(--text);
}

.prose ul,
.prose ol {
  padding-left: 1.35rem;
}

.prose li {
  margin: 0.35rem 0;
}

.prose .muted {
  color: var(--muted);
  font-size: 0.95rem;
}

.prose a {
  color: var(--accent);
}

.faq-item {
  margin-bottom: 1.75rem;
}

.faq-item h2 {
  font-size: 1.05rem;
  margin: 0 0 0.35rem;
  border: none;
  padding: 0;
  color: var(--text);
}

.faq-item p {
  margin: 0;
  color: var(--muted);
}

.toc {
  background: var(--toc-bg);
  border: 1px solid var(--toc-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 2rem;
}

.toc strong {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.toc ul {
  margin: 0;
  padding-left: 1.25rem;
}

.toc a {
  color: var(--accent);
}

/* Palette reference (how-to / security) */
.palette-swatch {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border-radius: 3px;
  vertical-align: -0.15em;
  margin-right: 0.35rem;
  border: 1px solid var(--border);
}

.palette-swatch--navy { background: var(--tracking-navy); }
.palette-swatch--gold { background: var(--tracking-gold); }
.palette-swatch--mulberry { background: var(--tracking-mulberry); }
.palette-swatch--gold-light { background: var(--tracking-gold-light); }
.palette-swatch--linen { background: var(--tracking-linen); }
.palette-swatch--slate { background: var(--tracking-warm-slate); }

.site-footer {
  margin-top: auto;
  padding: 1.25rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.site-footer a {
  color: var(--accent);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .card:hover {
    transform: none;
  }
  body {
    transition: none;
  }
}