/* Mise en page centrée simple */
body {
  height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  font-family: system-ui, sans-serif;
  background: #f4f4f5;
}

.site-title {
  margin: 0;
  font-size: 1.5rem;
  color: #52525b;
}

.card {
  text-align: center;
  padding: 2.5rem 3rem;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

h2 {
  margin: 0 0 1.5rem;
  font-size: 2rem;
  color: #1a1a1a;
}

.buttons {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
}

button {
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  border: 1px solid #d4d4d8;
  border-radius: 8px;
  background: #fafafa;
  cursor: pointer;
}

button:hover {
  background: #eee;
}

button.active {
  background: #2563eb;
  color: white;
  border-color: #2563eb;
}