Zyaan27/brain-tumor-detection — reverse-engineered prompt

Build me a simple web app that can take an MRI brain scan image, run a CNN based prediction, and tell me whether it looks like Glioma, Meningioma, Pituitary, or No Tumor. I want a clean responsive interface with an upload page, image preview, and a result view that shows the predicted class, confidence scores as a chart, and a short plain English explanation for that result. If it fits, add tabs or sections for the prediction details, the chart, and a quick look at the model architecture.

Please use the notebook and the existing HTML, CSS, and JavaScript files in this repo to wire everything up so it actually runs from app.py. If the trained model file is missing, use the notebook as the reference and make the project easy to plug a model into. Please also handle bad uploads nicely and make the whole thing feel polished and easy to test locally in the browser. Look up current docs online if you need to.