itfeelsharsh/shop ? reverse-engineered prompt

Build me a polished online shopping site called KamiKoto that feels premium and smooth on desktop and mobile.

It should let customers browse products, view product details, add items to a cart, sign up or log in with Firebase, and place orders with a secure checkout flow using Razorpay. After a successful payment, send a confirmation email, and also send order status emails when an admin updates an order to packed, shipped, or delivered.

I also want a separate admin area where an admin can manage products, inventory, customers, and order statuses, plus see basic store activity. Keep the design modern and high quality, with a strong focus on visuals and a clean shopping experience.

Use Firebase for auth and data, Cloudflare Pages style deployment for the app and serverless functions, and make sure the app is ready to run locally with an env file. If you need current docs or integration details, look them up online and then wire everything up cleanly.