_SIZE = 1024 * 1024;
    const fileInput = document.getElementById('fileInput');
    const uploadButton = document.getElementById('uploadButton');
    const progressBar = document.getElementById('progressBar');
    const progressPercent = document.getElementById('progressPercent');
    const progressSection = document.getElementById('progressSection');
    const successMessage = document.getElementById('successMessage');
    const buttonText = document.getElementById('buttonText');
    const uploadIcon = do