body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  color: white;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.card {
  background-color: rgba(0, 0, 0, 0.7);
  border: none;
  padding: 2rem;
  border-radius: 1.5rem;
  box-shadow: 0 8px 20px rgba(0,0,0,0.5);
}
.countdown-text {
  font-size: 1.3rem;
}