datweb07/nexus-cart ? reverse-engineered prompt

Build me a polished e commerce website called Nexus Cart with a clean modern storefront and the basic shopping flow a customer would expect.

I want people to be able to browse products, view product details, add items to a cart, and go through checkout in a simple smooth way. Please make the pages look good on desktop and mobile, keep the navigation easy to use, and make the whole site feel like a real online store. If there are already models, controllers, and views in the project, connect everything properly and fill in anything missing so the app works end to end.

Use the existing ASP.NET MVC structure, keep the styling and scripts tidy, and make sure the database side is wired up correctly with Entity Framework and SQL Server. If you need to check current docs for anything, go ahead and look them up. Also make sure the app runs cleanly in development and is ready to be opened in Docker too.