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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 10px;
}

header p {
    color: #666;
    font-size: 1.1rem;
}

.drop-zone {
    border: 3px dashed #667eea;
    border-radius: 15px;
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f8f9ff;
}

.drop-zone:hover, .drop-zone.drag-over {
    border-color: #764ba2;
    background: #f0f2ff;
    transform: scale(1.02);
}

.drop-zone svg {
    color: #667eea;
    margin-bottom: 20px;
}

.drop-zone h3 {
    color: #333;
    margin-bottom: 10px;
    font-size: 1.5rem;
}

.drop-zone p {
    color: #666;
}

.images-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.image-card {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 15px;
    position: relative;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.image-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0,0,0,0.15);
}

.image-preview {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 10px;
}

.image-info {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 5px;
}

.image-actions {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.btn-small {
    flex: 1;
    padding: 8px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.btn-download {
    background: #28a745;
    color: white;
}

.btn-download:hover {
    background: #218838;
}

.btn-remove {
    background: #dc3545;
    color: white;
}

.btn-remove:hover {
    background: #c82333;
}

.controls {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 12px;
    margin: 30px 0;
}

.control-group {
    margin-bottom: 20px;
}

.control-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 600;
}

.control-group select,
.control-group input[type="number"] {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.control-group select:focus,
.control-group input[type="number"]:focus {
    outline: none;
    border-color: #667eea;
}

.control-group input[type="number"] {
    width: calc(50% - 5px);
    display: inline-block;
}

.control-group input[type="number"]:last-child {
    margin-left: 10px;
}

.control-group input[type="range"] {
    width: 100%;
}

.control-group input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
}

.action-buttons {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.btn {
    flex: 1;
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 150px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #28a745;
    color: white;
}

.btn-secondary:hover {
    background: #218838;
    transform: translateY(-2px);
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
    transform: translateY(-2px);
}

.progress-container {
    margin: 30px 0;
    text-align: center;
}

.progress-bar {
    width: 100%;
    height: 30px;
    background: #e9ecef;
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 15px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    width: 0%;
    transition: width 0.3s ease;
}

#progressText {
    color: #666;
    font-weight: 600;
}

@media (max-width: 768px) {
    .container {
        padding: 20px;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .images-container {
        grid-template-columns: 1fr;
    }

    .action-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .control-group input[type="number"] {
        width: 100%;
        margin: 5px 0;
    }
}