justinNabunturan969/app ? reverse-engineered prompt

Build me a simple mobile app in Dart that feels polished and easy to use.

I want it to be a clean starter app with a home screen, a couple of basic pages, and smooth navigation between them. Make the UI look modern and friendly, with sensible spacing, colors, and reusable components so it’s easy to extend later. If it helps, set things up in a way that would be good for a real app, with clear structure and placeholder content I can replace later.

Please keep it working end to end, so I can run it right away and see the screens in action. Add anything small that makes the app feel complete, like an empty state, a loading state, or a simple settings area if that fits naturally. If you need to check current best practices or docs online, go ahead and do that.