Make better UI design for app.py

[4darsh-Dev]

Changes to be made

1. Make better ui design by adding elements such as buttons and custom css and html
2. In training metrics app, make hyperparameters chart instead of image using matplotlib, seaborn and pandas

Read streamlit docs for better understanding.

[basantnema31]

Hi @4darsh-Dev, I'd love to handle this UI and Data Viz upgrade for GSSoC 2026. I understand you want to move away from static images and towards dynamic visualizations, alongside a UI facelift.

My technical plan:

1. Inject custom CSS and structure to modernize the layout, buttons, and input fields in app.py.
2. Replace the static training metrics image with an interactive, dynamically rendered chart using Matplotlib/Seaborn.
3. Ensure the chart properly reflects the hyperparameter state and is responsive within the app layout.

Could you assign this issue to me so I can get started?