UI Update: Align with new branding

[Ayush8923]

Is your feature request related to a problem?
The sidebar and overall UI do not align with the new logo and theme. This inconsistency in branding affects the overall user experience and does not reflect the updated design system.

Describe the solution you'd like

• Update the sidebar design to match the new logo and theme for a clean look.
• Apply updated branding (colors, typography, icons, etc.) throughout the application.
• Ensure visual consistency across all screens for a cohesive user experience.

Original issue

Describe the current behavior

• The sidebar and overall UI are not aligned with the new logo and theme.
• Branding across the application is inconsistent and does not reflect the updated design system.

Describe the enhancement you'd like

• Update the sidebar design to match the new logo and theme, ensuring a clean and consistent look.
• Apply updated branding (colors, typography, icons, etc.) across the application.
• Ensure visual consistency across all screens for a cohesive user experience.