body {
  background-color: #f8f9fa;
}
.card {
  border-radius: 1rem;
}
.bg-danger-subtle { background-color: #ffe6e6; }
.bg-warning-subtle { background-color: #fff7e0; }
.bg-info-subtle { background-color: #e0f7fa; }
.btn {
  border-radius: 0.5rem;
}