.pdf-extractor-container {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: #f8f9fa;
            padding: 40px 0;
            min-height: 100vh;
        }
        .pdf-extractor-container .main-card {
            background: white;
            border-radius: 12px;
            box-shadow: 0 2px 20px rgba(0,0,0,0.08);
            padding: 40px;
            margin-bottom: 30px;
        }
        .pdf-extractor-container .tool-header h1 {
            color: #2d3436;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 15px;
            text-align: center;
        }
        .pdf-extractor-container .tool-header p {
            color: #636e72;
            font-size: 1.1rem;
            text-align: center;
        }
        .pdf-extractor-container .upload-area {
            border: 3px dashed #e5332d;
            border-radius: 12px;
            padding: 60px 20px;
            text-align: center;
            background-color: #fff5f5;
            transition: all 0.3s;
            cursor: pointer;
            margin-bottom: 30px;
        }
        .pdf-extractor-container .upload-area:hover {
            background-color: #ffebeb;
            border-color: #d12a24;
        }
        .pdf-extractor-container .upload-area.dragover {
            background-color: #ffe0e0;
            border-color: #c12020;
            transform: scale(1.02);
        }
        .pdf-extractor-container .upload-icon {
            font-size: 4rem;
            color: #e5332d;
            margin-bottom: 20px;
        }
        .pdf-extractor-container .btn-primary-custom {
            background-color: #e5332d;
            border: none;
            padding: 12px 30px;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: 8px;
            color: white;
        }
        .pdf-extractor-container .btn-primary-custom:hover {
            background-color: #c12a24;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(229, 51, 45, 0.3);
        }
        .pdf-extractor-container .btn-secondary-custom {
            background-color: #6c757d;
            border: none;
            padding: 12px 30px;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: 8px;
            color: white;
        }
        .pdf-extractor-container .btn-secondary-custom:hover {
            background-color: #5a6268;
        }
        .pdf-extractor-container .mode-btn {
            border: 2px solid #dee2e6;
            background: white;
            padding: 15px 20px;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s;
            text-align: center;
        }
        .pdf-extractor-container .mode-btn:hover {
            border-color: #e5332d;
            background-color: #fff5f5;
        }
        .pdf-extractor-container .mode-btn.active {
            border-color: #e5332d;
            background-color: #e5332d;
            color: white;
        }
        .pdf-extractor-container .mode-btn i {
            font-size: 2rem;
            margin-bottom: 10px;
            display: block;
        }
        .pdf-extractor-container .pages-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }
        .pdf-extractor-container .page-item {
            border: 3px solid #dee2e6;
            border-radius: 8px;
            padding: 10px;
            cursor: pointer;
            transition: all 0.3s;
            position: relative;
            background: white;
        }
        .pdf-extractor-container .page-item:hover {
            border-color: #e5332d;
            box-shadow: 0 4px 12px rgba(229, 51, 45, 0.2);
            transform: translateY(-3px);
        }
        .pdf-extractor-container .page-item.selected {
            border-color: #e5332d;
            background-color: #fff5f5;
        }
        .pdf-extractor-container .page-item.selected::after {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            top: 10px;
            right: 10px;
            background: #e5332d;
            color: white;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .pdf-extractor-container .page-canvas {
            width: 100%;
            height: auto;
            border-radius: 4px;
        }
        .pdf-extractor-container .page-number {
            text-align: center;
            margin-top: 8px;
            font-weight: 600;
            color: #2d3436;
        }
        .pdf-extractor-container .info-banner {
            background-color: #fff3cd;
            border-left: 4px solid #ffc107;
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 20px;
        }
        .pdf-extractor-container .progress {
            height: 8px;
            border-radius: 10px;
        }
        .pdf-extractor-container .progress-bar {
            background-color: #e5332d;
        }
        .pdf-extractor-container .how-to-use {
            background: white;
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 2px 20px rgba(0,0,0,0.08);
        }
        .pdf-extractor-container .how-to-use h2 {
            color: #2d3436;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 30px;
        }
        .pdf-extractor-container .how-to-use h3 {
            color: #e5332d;
            font-size: 1.5rem;
            font-weight: 600;
            margin-top: 30px;
            margin-bottom: 15px;
        }
        .pdf-extractor-container .how-to-use h4 {
            color: #2d3436;
            font-size: 1.2rem;
            font-weight: 600;
            margin-top: 20px;
            margin-bottom: 10px;
        }
        .pdf-extractor-container .step-number {
            background-color: #e5332d;
            color: white;
            width: 35px;
            height: 35px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin-right: 10px;
        }
        .pdf-extractor-container .feature-box {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 15px;
            border-left: 4px solid #e5332d;
        }
        #fileInput { display: none; }