alirezasp404/WhenWhere ? reverse-engineered prompt

Build me a simple cross platform mobile app called WhenWhere for people to manage events. I want users to be able to browse upcoming events, open an event to see the full details, and register or join if they’re interested. They should also be able to create their own events and invite other people. Each event should include a title, description, location, date and time, capacity, and organizer.

Please make the app feel clean and easy to use on mobile, with the basic screens and flows working end to end. It should connect to the existing ASP.Net API for data, so use that backend rather than faking everything unless something is missing. If needed, look up the current docs online and wire it up in a sensible way.

I mainly want a working .NET MAUI app that runs cross platform and shows the full event creation and event joining experience in a polished but straightforward way.