:root {
  color-scheme: light;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial,
    sans-serif;
}

body {
  margin: 0;
  background: #f5f7fb;
  color: #1f2937;
}

h1 {
  margin: 0 0 12px;
  font-size: 1.4rem;
}

button {
  border: 1px solid #cbd5e1;
  background: #ffffff;
  color: #111827;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.95rem;
  cursor: pointer;
}

button:hover {
  background: #f8fafc;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}