Okay, I can help you create a well-structured and styled login form using HTML, CSS, and JavaScript. This example focuses on the front-end structure, styling, and basic client-side validation. Remember, a truly secure login system requires a backend component for authentication and data handling, which is not included here due to the environment constraints.

This setup provides a visually appealing login form with basic client-side validation. You can view it by opening the index.html file. Remember to replace the simulated login logic in script.js with actual backend communication for a real-world application.