tabindahfatema/e-commerce_MERNSTACK ? reverse-engineered prompt

Build me a full e commerce website where people can browse products, search and filter what they want, view product details, add items to a cart, and go through checkout.

I want it to feel like a real online store, with a clean homepage, product listing pages, product pages, a cart, and simple login and signup for customers. If it makes sense, include an admin area so someone can add, edit, and remove products, and see basic order info.

Please make it work as a complete app, not just the front end, and set it up in a way that I can run locally and test right away. Use whatever current best practices fit a MERN style project, and look up current docs online if you need to. Also make the UI responsive so it looks good on desktop and mobile.