:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #111111;
  --accent: #3b5bfd;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f10;
    --fg: #f2f2f2;
  }
}

* {
  box-sizing: border-box;
}

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

header {
  padding: 4rem 1.5rem 2rem;
  text-align: center;
}

header h1 {
  font-size: 2.5rem;
  margin: 0 0 0.5rem;
  color: var(--accent);
}

main {
  flex: 1;
  padding: 1rem 1.5rem;
  text-align: center;
}

footer {
  padding: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.7;
}