* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f5f5f5;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

h1 {
  text-align: center;
  color: #2c3e50;
  margin-bottom: 30px;
  font-size: 2.5rem;
}

.controls {
  background: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: end;
}

.input-group {
  display: flex;
  flex-direction: column;
  min-width: 150px;
}

.input-group label {
  margin-bottom: 5px;
  font-weight: 600;
  color: #555;
}

.input-group input,
.input-group select {
  padding: 10px;
  border: 2px solid #ddd;
  border-radius: 5px;
  font-size: 16px;
  min-height: 42px;
  transition: border-color 0.3s ease;
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: #3498db;
}

.btn-primary,
.btn-secondary {
  padding: 12px 24px;
  border: none;
  border-radius: 5px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-primary {
  background-color: #3498db;
  color: white;
}

.btn-primary:hover {
  background-color: #2980b9;
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: #27ae60;
  color: white;
  margin-bottom: 20px;
}

.btn-secondary:hover:not(:disabled) {
  background-color: #229954;
  transform: translateY(-2px);
}

.btn-secondary:disabled {
  background-color: #bdc3c7;
  cursor: not-allowed;
  transform: none;
}

.actions {
  text-align: center;
  margin-bottom: 30px;
}

.preview-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.image-item {
  background: white;
  border-radius: 10px;
  padding: 15px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: transform 0.3s ease;
}

.image-item:hover {
  transform: translateY(-5px);
}

.image-item img {
  max-width: 100%;
  height: auto;
  border-radius: 5px;
  margin-bottom: 10px;
}

.image-info {
  font-size: 14px;
  color: #666;
  font-weight: 500;
}

.loading {
  text-align: center;
  padding: 40px;
  font-size: 18px;
  color: #666;
}

.loading::after {
  content: '';
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid #f3f3f3;
  border-top: 3px solid #3498db;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-left: 10px;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@media (max-width: 768px) {
  .controls {
    flex-direction: column;
    align-items: stretch;
  }

  .input-group {
    min-width: 100%;
  }

  .preview-container {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
  }

  h1 {
    font-size: 2rem;
  }
}