/* One stylesheet, no web fonts, no scripts. The CSP in firebase.json allows
   only same-origin styles, so nothing here may be inlined into the HTML. */
:root {
  --bg: #ffffff;
  --fg: #14181f;
  --muted: #4a5360;
  --accent: #1d4ed8;
  --rule: #e3e6eb;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1218;
    --fg: #eef1f5;
    --muted: #a3acb9;
    --accent: #8ab4ff;
    --rule: #262c37;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg);
  font: 1.0625rem/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.wrap {
  width: 100%;
  max-width: 40rem;
  margin: 0 auto;
  padding: 0 1rem;
}

header.wrap {
  padding-top: 2rem;
}

main.wrap {
  flex: 1;
  padding-top: 4rem;
  padding-bottom: 4rem;
}

footer.wrap {
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
  border-top: 1px solid var(--rule);
  display: flex;
  gap: 1.25rem;
  font-size: 0.9375rem;
}

.wordmark {
  color: var(--fg);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  text-decoration: none;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.lede {
  color: var(--muted);
  font-size: 1.1875rem;
}

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

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}