.preview-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-top: 20px;
}

.preview-box {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 16px;
  width: 280px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
  text-align: center;
}

.preview-box h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

.preview-box img {
  max-width: 100%;
  max-height: 200px;
  border-radius: 4px;
  object-fit: contain;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  margin-bottom: 10px;
}

.options {
  margin-top: 16px;
  margin-bottom: 10px;
  text-align: center;
}

.options label {
  font-weight: 500;
  margin-right: 8px;
  font-size: 15px;
}

.options select {
  padding: 4px 10px;
  font-size: 14px;
  border-radius: 4px;
  border: 1px solid #aaa;
}

.download-btn {
  display: inline-block;
  margin-top: 10px;
  background-color: #007bff;
  color: white;
  padding: 6px 14px;
  border-radius: 4px;
  text-decoration: none;
  font-size: 14px;
}

.download-btn:hover {
  background-color: #0056b3;
}

.loading {
  font-size: 14px;
  color: #555;
  margin-top: 10px;
  animation: pulse 1.2s infinite;
  text-align: center;
}

@keyframes pulse {
  0% { opacity: 0.3; }
  50% { opacity: 1; }
  100% { opacity: 0.3; }
}