:root {
  --bg: #ffffff;
  --fg: #1d1d1f;
  --muted: #5b5b66;
  --accent: #0b5cad;
  --border: #e2e2e8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121216;
    --fg: #ececf1;
    --muted: #a5a5b2;
    --accent: #7db7f5;
    --border: #2c2c35;
  }
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 1rem/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

.skip {
  position: absolute;
  left: -9999px;
}

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

.site-header,
.site-footer,
main {
  max-width: 48rem;
  margin: 0 auto;
  padding: 1rem;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.site-header a {
  display: inline-block;
  padding: 0.5rem 0;
}

.brand {
  font-weight: 700;
  text-decoration: none;
  color: var(--fg);
}

.lead {
  font-size: 1.125rem;
  color: var(--muted);
}

.tools {
  list-style: none;
  padding: 0;
}

.tools li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.empty {
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
}

.site-footer a {
  display: inline-block;
  padding: 0.5rem 0;
}