document.addEventListener('DOMContentLoaded', function() { var passwordInput = document.querySelector('input[type="password"]'); if (passwordInput) { passwordInput.addEventListener('input', function() { var minLength = 12; if (passwordInput.value.length < minLength) { passwordInput.setCustomValidity('Password must be at least ' + minLength + ' characters long.'); } else { passwordInput.setCustomValidity(''); } }); } });