:root {
  --bg: #ffffff;
  --fg: #16212b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10181f;
    --fg: #e8eef3;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
}

.logo {
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}