Create a simple responsive website using only HTML, CSS, and vanilla JavaScript. Requirements: - Generate exactly 3 files: 1. `index.html` 2. `style.css` 3. `script.js` Website content: - A header with the title: `My Simple Website` - A subtitle: `Welcome to my website` - A main section with: - Heading: `Hello 👋` - Text: `This is a simple website using HTML, CSS, and JavaScript.` - A button with text: `Click Me` - An empty message area below the button - A footer with: `© 2026 My Website` Design: - Clean and minimal layout - Light gray page background - Blue header - Dark footer - Center-aligned content - Rounded blue button - Button hover effect - Mobile responsive JavaScript behavior: When the user clicks the `Click Me` button, display: `The JavaScript is working! 🎉` below the button. Important: - Do not use React, Vue, Bootstrap, Tailwind, or any external libraries. - Use only plain HTML, CSS, and JavaScript. - Keep the code simple and easy to understand. - Make sure `index.html` correctly links to `style.css` and `script.js`. - Return each file in a separate code block with the filename clearly shown.