* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
        }

        body {
            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: 30px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
        }

        h1 {
            color: #333;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        h1 i {
            color: #764ba2;
        }

        .subtitle {
            color: #666;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 2px solid #f0f0f0;
        }

        .upload-box {
            border: 3px dashed #764ba2;
            border-radius: 15px;
            padding: 40px;
            text-align: center;
            background: #fafafa;
            cursor: pointer;
            transition: all 0.3s;
            margin-bottom: 20px;
        }

        .upload-box:hover {
            background: #f0f0f0;
            border-color: #667eea;
        }

        .upload-box i {
            font-size: 60px;
            color: #764ba2;
            margin-bottom: 15px;
        }

        .upload-box h3 {
            color: #333;
            margin-bottom: 10px;
        }

        .file-info {
            background: #f0f0f0;
            padding: 15px;
            border-radius: 10px;
            margin-bottom: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .btn {
            padding: 12px 30px;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all 0.3s;
        }

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

        .btn-primary:hover:not(:disabled) {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
        }

        .btn-primary:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .btn-success {
            background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
            color: white;
        }

        .progress-bar {
            height: 10px;
            background: #f0f0f0;
            border-radius: 5px;
            overflow: hidden;
            margin: 20px 0;
        }

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

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

        .card {
            background: white;
            border: 1px solid #e0e0e0;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }

        .card img {
            width: 100%;
            height: 180px;
            object-fit: contain;
            background: #f5f5f5;
            padding: 10px;
        }

        .card-body {
            padding: 15px;
            background: #fafafa;
        }

        .card-info {
            margin-bottom: 10px;
        }

        .card-info p {
            margin: 5px 0;
            color: #666;
            font-size: 14px;
        }

        .download-single {
            width: 100%;
            padding: 8px;
            background: #667eea;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 5px;
            transition: all 0.3s;
        }

        .download-single:hover {
            background: #764ba2;
        }

        .zip-section {
            text-align: right;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 2px solid #f0f0f0;
        }

        .alert {
            padding: 15px;
            border-radius: 8px;
            margin: 20px 0;
            display: none;
        }

        .alert-success {
            background: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }

        .alert-error {
            background: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }

        .loading {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid #f3f3f3;
            border-top: 3px solid #667eea;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

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

        .status {
            background: #e8f4fd;
            padding: 10px;
            border-radius: 5px;
            margin: 10px 0;
            display: none;
        }