body {
  font-family: "Inter", sans-serif;
  background-color: #f7fafc;
}
.prize-number {
  font-weight: 700;
  color: #d32f2f; /* Màu đỏ đậm */
}
/* Animation cho spinner */
.loader {
  border: 4px solid #f3f3f3;
  border-top: 4px solid #8b5cf6; /* Màu tím đậm hơn */
  border-radius: 50%;
  width: 30px;
  height: 30px;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}