Btn.innerHTML = '<i class="bi bi-hourglass-split"></i> Saving...';
        submitBtn.disabled = true;
        
        // Convert FormData to JSON
        const data = {};
        for (let [key, value] of formData.entries()) {
            if (key === 'weight' || key === 'width' || key === 'height' || key === 'depth') {
                data[key] = value ? parseFloat(value) : null;
            } else {
                data[key] = value || null;
            }
        }
        
        console.log('Saving case