.card-thumb {
  height: 220px;
  object-fit: contain;
  background: #f5f5f5;
  padding: 0.5rem;
}

.card-thumb-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #999;
  font-size: 0.9rem;
}

.card-thumb-preview {
  max-height: 220px;
  display: block;
}

.alert {
  margin-bottom: 1rem;
}