.dropzone {
            border: 2px dashed var(--border-color);
            border-radius: 8px;
            padding: 2rem;
            text-align: center;
            background-color: #f9f9f9;
            cursor: pointer;
            transition: background-color 0.2s, border-color 0.2s;
        }
        .dropzone.dragover {
            background-color: rgba(70, 130, 180, 0.1);
            border-color: var(--primary-color);
        }
        .file-list {
            max-height: 250px;
            overflow-y: auto;
            border: 1px solid var(--border-color);
            border-radius: 4px;
        }
        .file-item {
            padding: 0.5rem 1rem;
            border-bottom: 1px solid var(--border-color-light);
        }
        .file-item:last-child {
            border-bottom: none;
        }
        .preview-table {
            max-height: 300px;
            overflow-y: auto;
            border: 1px solid var(--border-color);
            border-radius: 6px;
        }
        .preview-table th {
            position: sticky;
            top: 0;
            background-color: #f8f9fa;
            z-index: 1;
        }
        .preview-row-duplicate {
            background-color: rgba(220, 53, 69, 0.1) !important;
        }
        .preview-row-duplicate td:first-child::before {
            content: "⚠️ ";
            color: #dc3545;
            font-weight: bold;
        }
        .rule-group {
            background-color: rgba(70, 130, 180, 0.05);
            border-radius: 6px;
            padding: 1rem;
            margin-bottom: 1rem;
        }
        .template-badge {
            background-color: #6c757d;
            color: white;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            margin: 0.2rem;
            cursor: pointer;
            display: inline-block;
            transition: background-color 0.2s;
        }
        .template-badge:hover {
            background-color: var(--primary-color);
        }
        .scroll-top-btn {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: var(--primary-color);
            color: white;
            display: none;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 2px 10px rgba(0,0,0,0.2);
            border: none;
            z-index: 1000;
        }
        .scroll-top-btn:hover {
            background-color: var(--accent-color);
        }
        .conflict-badge {
            background-color: #dc3545;
            color: white;
            font-size: 0.7rem;
            padding: 2px 6px;
            border-radius: 10px;
            margin-left: 6px;
        }