saroj-kumar94/Chatbot_-project ? reverse-engineered prompt

Build me a simple chatbot app using a MERN stack setup, with a clean frontend and a backend that handles chat messages.

I want a user friendly chat screen where someone can type a message and see replies in a conversation style layout. Keep it modern and easy to use, with a clear input area, message bubbles, and a nice loading state while the bot responds. The backend should accept messages from the frontend, process them, and send back responses in a reliable way. Make sure the project is split into frontend and backend like a normal full stack app, and wire everything together so it runs smoothly from one setup.

Please make the app work end to end, with sensible default styling and good basic error handling. If you need to look up current docs online, feel free to do that.