Sabit-Hasan/Greetx ? reverse-engineered prompt

Build me a simple, friendly greeting website called Greetx.

I want a clean single page app where someone can type their name and get a nice personalized greeting on the screen. Make it feel warm and modern, with a pleasant color palette, centered layout, and smooth little interactions so it does not feel plain. If it makes sense, add a few quick options like different greeting styles or a button to generate another message, but keep it simple and easy to use.

The page should work well on both phone and desktop, and it should look polished without needing any setup. Use the existing HTML, CSS, and JavaScript files, and make the experience feel complete when opened in a browser. If you need to check any current browser behavior or small implementation details, look it up online.