document.addEventListener('DOMContentLoaded', function() {
    // Handle file upload interactions
    const uploadArea = document.querySelector('.border-dashed');
    
    if (uploadArea) {
        uploadArea.addEventListener('dragover', (e) => {
            e.preventDefault();
            uploadArea.classList.add('drag-over');
        });
        
        uploadArea.addEventListener('dragleave', () => {
            uploadArea.classList.remove('drag-over');
        });
        
        uploadArea.addEventListener('drop', (e) => {
            e.preventDefault();
            uploadArea.classList.remove('drag-over');
            const files = e.dataTransfer.files;
            handleFiles(files);
        });
    }
    
    // File selection handler
    const fileInput = document.createElement('input');
    fileInput.type = 'file';
    fileInput.accept = '.pdf,.musicxml,.mid,.midi';
    fileInput.style.display = 'none';
    
    document.querySelector('button').addEventListener('click', () => {
        fileInput.click();
    });
    
    fileInput.addEventListener('change', () => {
        handleFiles(fileInput.files);
    });
    
    function handleFiles(files) {
        if (files.length > 0) {
            console.log('File selected:', files[0].name);
            // Here you would handle the file upload to your backend
            // For now, we'll just show a success message
            alert(`Successfully selected ${files[0].name}. Processing will begin shortly.`);
        }
    }
    
    // Generate harmony button click handler
    document.querySelector('.bg-blue-500').addEventListener('click', () => {
        // This would send the request to your backend
        alert('Harmony generation started! This may take a moment.');
    });
});