.photo-colorizer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    font-family: Arial, sans-serif;
}

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

.colorizer-header h2 {
    color: #333;
    margin-bottom: 10px;
}

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

.upload-area {
    border: 3px dashed #ccc;
    border-radius: 10px;
    padding: 40px 20px;
    margin-bottom: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-area:hover {
    border-color: #007cba;
    background-color: #f8f9fa;
}

.upload-area.dragover {
    border-color: #007cba;
    background-color: #e7f3ff;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.action-btn {
    background: #007cba;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    margin: 5px;
    transition: background 0.3s ease;
}

.action-btn:hover {
    background: #005a87;
}

.action-btn.primary {
    background: #28a745;
}

.action-btn.primary:hover {
    background: #1e7e34;
}

.action-btn.secondary {
    background: #6c757d;
}

.action-btn.secondary:hover {
    background: #545b62;
}

.action-btn.success {
    background: #28a745;
}

.action-btn.success:hover {
    background: #1e7e34;
}

.filter-controls {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 30px;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
    justify-content: center;
}

.filter-btn {
    padding: 10px 20px;
    border: 2px solid #ddd;
    background: white;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn.active {
    border-color: #007cba;
    background: #007cba;
    color: white;
}

.filter-btn:hover {
    border-color: #005a87;
}

.custom-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.slider-group {
    text-align: left;
}

.slider-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

.slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: #ddd;
    outline: none;
}

.bulk-actions {
    text-align: center;
}

.photo-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.photo-item {
    background: white;
    border-radius: 10px;
    padding: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
}

.photo-preview {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 5px;
    margin-bottom: 10px;
}

.photo-actions {
    display: flex;
    gap: 5px;
    justify-content: center;
    flex-wrap: wrap;
}

.download-section {
    text-align: center;
    padding: 20px;
    background: #e7f3ff;
    border-radius: 10px;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    color: white;
}

.loading-spinner {
    border: 5px solid #f3f3f3;
    border-top: 5px solid #007cba;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

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

.individual-download {
    margin: 10px 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .filter-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .filter-btn {
        width: 200px;
    }
    
    .custom-controls {
        grid-template-columns: 1fr;
    }
    
    .photo-gallery {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}