Husseinhajghazal/mern-ecommerce — reverse-engineered prompt

Build me a responsive multi vendor ecommerce website using the MERN stack. I want customers to be able to sign up, log in, browse products and shopping events, add items to a cart or wishlist, use coupon codes, place orders, pay by credit card or choose cash on delivery, then track orders, leave ratings and reviews, and request refunds.

I also want sellers to have their own dashboard where they can register, edit their shop and contact info, add and manage products, create events, create coupon codes, and update order status. Normal users and sellers should both be able to edit their profile information.

Please make the frontend clean and mobile friendly, with real forms, validation, notifications, protected pages, and a backend connected to MongoDB. Don’t make it just mock screens, wire the main flows together so it can actually run locally. Include clear setup notes for environment variables and use current docs online if you need to.