/* Theme mirrors the Metabolic Care ("Krestrel") app palette
   "Kestrel at dawn" (src/components/ui/theme.ts, docs/BRANDING.md):
   Nunito rounded font, slate-blue kestrel brand, amber + warm-rust accents,
   cream surfaces, rounded corners, and an automatic deep-slate dark mode.
   Interactive slate uses the app's primaryDark (#4E6E8C) so links and
   white-on-brand buttons clear WCAG AA on the cream background. */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&display=swap');

:root {
  /* Brand — slate sky (the kestrel's blue-grey wings) */
  --brand: #4E6E8C;
  --brand-dark: #3F5A73;
  --brand-light: #E9EFF5;
  /* Warm accents — amber beak/feet + warm-rust back */
  --accent: #F0A95C;
  --secondary: #E8896B;
  /* Semantics */
  --warn: #E8943A;
  --warn-light: #FDF0E1;
  /* Neutrals — warm, on cream */
  --ink: #2E3D4F;
  --muted: #5E6B78;
  --muted-2: #93A0AC;
  --line: #EFE7DD;
  --bg: #FBF6EF;
  --card: #FFFFFF;
  --surface-alt: #F7EFE4;
  /* Component tokens */
  --header-bg: #4E6E8C;
  --header-fg: #FFFFFF;
  --hero-from: #6A8DAA;
  --hero-to: #4E6E8C;
  --hero-fg: #FFFFFF;
  --btn-bg: #4E6E8C;
  --btn-bg-hover: #3F5A73;
  --btn-fg: #FFFFFF;
  --shadow: 0 6px 16px rgba(74, 90, 110, 0.12);
  --max: 760px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #8FB0CB;
    --brand-dark: #7E9DB8;
    --brand-light: #22364A;
    --accent: #F0A95C;
    --secondary: #E8896B;
    --warn: #E8943A;
    --warn-light: #3D2510;
    --ink: #EFF3F7;
    --muted: #9FB4C6;
    --muted-2: #8A9DB0;
    --line: #263647;
    --bg: #101923;
    --card: #18242F;
    --surface-alt: #1D2B38;
    --header-bg: #18242F;
    --header-fg: #EFF3F7;
    --hero-from: #274056;
    --hero-to: #101923;
    --hero-fg: #EFF3F7;
    --btn-bg: #4E6E8C;
    --btn-bg-hover: #5B7C99;
    --btn-fg: #FFFFFF;
    --shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
  font-weight: 400;
}

a { color: var(--brand); text-decoration: none; font-weight: 600; }
a:hover { text-decoration: underline; }

strong { font-weight: 700; }

header.site {
  background: var(--header-bg);
  color: var(--header-fg);
}
header.site .wrap { display: flex; align-items: center; gap: 12px; }
header.site a { color: var(--header-fg); }
header.site .brand {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 10px;
}
header.site .logo {
  width: 32px; height: 32px;
  border-radius: 9px;
  display: block;
  flex: 0 0 auto;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.14);
}
header.site nav { margin-left: auto; display: flex; gap: 18px; font-size: 15px; flex-wrap: wrap; }
header.site nav a { opacity: 0.92; font-weight: 700; }
header.site nav a:hover { opacity: 1; text-decoration: none; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 18px 22px; }

main.wrap { padding-top: 34px; padding-bottom: 60px; }

.hero {
  background: linear-gradient(150deg, var(--hero-from) 0%, var(--hero-to) 100%);
  color: var(--hero-fg);
  padding: 60px 22px;
}
.hero .wrap { padding: 0; max-width: var(--max); margin: 0 auto; }
.hero h1 { font-size: 36px; margin: 0 0 6px; letter-spacing: -0.02em; font-weight: 800; color: var(--hero-fg); }
.hero .tagline { font-size: 20px; font-weight: 700; opacity: 0.96; margin: 0 0 14px; max-width: 560px; }
.hero p { font-size: 18px; opacity: 0.94; margin: 0; max-width: 560px; }

h1 { font-size: 31px; letter-spacing: -0.02em; margin: 0 0 6px; font-weight: 800; }
h2 { font-size: 22px; letter-spacing: -0.01em; margin: 34px 0 10px; padding-top: 6px; font-weight: 800; }
h3 { font-size: 18px; margin: 22px 0 6px; font-weight: 700; }

.updated { color: var(--muted); font-size: 14px; margin: 0 0 8px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 22px 24px;
  margin: 18px 0;
  box-shadow: var(--shadow);
}

.callout {
  border-left: 4px solid var(--brand);
  background: var(--brand-light);
  border-radius: 14px;
  padding: 14px 18px;
  margin: 20px 0;
  font-size: 15.5px;
}
.callout.warn { border-left-color: var(--warn); background: var(--warn-light); }

ul, ol { padding-left: 22px; }
li { margin: 4px 0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 15px;
  background: var(--card);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
th, td { text-align: left; padding: 11px 13px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--brand-light); font-weight: 700; }
tr:last-child td { border-bottom: none; }
td.no { color: var(--muted); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 22px 0;
}
.grid .card { margin: 0; }
.grid .card h3 { margin-top: 0; }

.btn {
  display: inline-block;
  background: var(--btn-bg);
  color: var(--btn-fg) !important;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 700;
  margin: 6px 8px 6px 0;
  box-shadow: var(--shadow);
}
.btn:hover { text-decoration: none; background: var(--btn-bg-hover); }
.btn.secondary { background: var(--card); color: var(--brand) !important; border: 1.5px solid var(--brand); box-shadow: none; }

.mail { font-weight: 700; }

footer.site {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  background: var(--card);
}
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; }
footer.site nav { display: flex; gap: 16px; flex-wrap: wrap; }
footer.site .copy { margin-left: auto; }

.toc { font-size: 15px; }
.toc a { display: inline-block; margin: 2px 10px 2px 0; }

@media (max-width: 560px) {
  body { font-size: 16px; }
  .hero h1 { font-size: 28px; }
  header.site .wrap { flex-wrap: wrap; }
  footer.site .copy { margin-left: 0; width: 100%; }
}