/* Shared styles for the Ohmbook website (index.html + privacy.html). Colours match the app. */
:root {
  --bg: #F2F3EF;
  --card: #FFFFFF;
  --ink: #14171A;
  --body: #2B3036;
  --muted: #555C63;
  --line: #DCDFD8;
  --track: #E3E5DF;
  --accent: #1D4ED8;
  --accent-ink: #FFFFFF;
  --accent-soft: #E6ECFD;
  --nav-bg: rgba(242, 243, 239, 0.85);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111315;
    --card: #1A1D20;
    --ink: #F2F3EF;
    --body: #D5D8D2;
    --muted: #9CA2A8;
    --line: #2C3034;
    --track: #24282C;
    --accent: #7EA2FF;
    --accent-ink: #0B1530;
    --accent-soft: #1C2747;
    --nav-bg: rgba(17, 19, 21, 0.85);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
strong { color: var(--ink); }
.mono { font-family: ui-monospace, "SF Mono", Menlo, monospace; }
.eyebrow {
  font: 12px/1.4 ui-monospace, "SF Mono", Menlo, monospace;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted);
}
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 720px; }

/* ---------- Top navigation ---------- */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: var(--nav-bg);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 18px; }
.brand img { width: 32px; height: 32px; border-radius: 7px; }
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  color: var(--muted); text-decoration: none; font-size: 15px; font-weight: 500;
  padding: 8px 12px; border-radius: 10px;
}
.nav-links a:hover { color: var(--ink); background: var(--track); }
.nav-links a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; height: 48px; padding: 0 20px;
  border-radius: 24px; font-size: 16px; font-weight: 600; text-decoration: none;
}
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-secondary { background: var(--card); color: var(--ink); border: 1px solid var(--line); }
.btn-secondary:hover { border-color: var(--muted); }

/* ---------- Cards ---------- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; }

/* ---------- Footer ---------- */
.footer { margin-top: 64px; border-top: 1px solid var(--line); }
.footer .wrap {
  display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between;
  padding-top: 20px; padding-bottom: 40px; font-size: 14px; color: var(--muted);
}
.footer a { color: var(--muted); }
.footer a:hover { color: var(--ink); }
.footer nav { display: flex; gap: 20px; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }