/* System fonts only, so the page makes no third party requests. */
:root {
  --bg: #fafaf9;
  --fg: #1c1917;
  --muted: #78716c;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0a09;
    --fg: #f5f5f4;
    --muted: #a8a29e;
  }
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  -webkit-font-smoothing: antialiased;
}

/* Center everything in the viewport. */
main {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  padding: 1rem;
}

.mark {
  display: grid;
  place-items: center;
  width: 4.5rem;
  height: 4.5rem;
  margin: 0;
  border-radius: 1rem;
  background: var(--fg);
  color: var(--bg);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.code {
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
  letter-spacing: 0.1em;
}