.upload-area {
            border: 3px dashed #ccc;
            border-radius: 10px;
            padding: 40px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s;
            background: #f9f9f9;
            margin: 20px 0;
        }
        .upload-area:hover {
            border-color: #337ab7;
            background: #f0f8ff;
        }
        .upload-area.dragover {
            border-color: #5cb85c;
            background: #f0fff0;
        }
        .file-info {
            background: #f8f9fa;
            border-left: 4px solid #337ab7;
            padding: 15px;
            margin: 10px 0;
            border-radius: 4px;
        }
        .progress {
            margin: 10px 0;
            height: 20px;
        }
        .converted-image {
            max-width: 200px;
            margin: 10px;
            border: 1px solid #ddd;
            padding: 5px;
            border-radius: 4px;
        }
        .download-btn {
            margin: 5px;
        }
        .hidden {
            display: none;
        }
        #fileInput {
            display: none;
        }
        .format-badge {
            background: #5bc0de;
            color: white;
            padding: 3px 8px;
            border-radius: 3px;
            font-size: 12px;
            margin-left: 10px;
        }