Frontend Style Refactor (React + Supabase)

My React + Supabase web application is functionally solid, yet the interface still feels pieced together. I need a front-end developer who can refine the color palette, establish a clear typographic hierarchy, and bring the entire app into a cohesive, contemporary look without touching the backend logic I already have in place.

The primary focus is colour scheme and typography: consistent heading sizes, balanced line-height, an accessible contrast ratio, and a palette that feels both modern and professional. You are free to introduce a design system (e.g., Tailwind, MUI theme override, or a custom SCSS token set) as long as it stays lightweight and maintainable.

To help me choose quickly, please centre your bid on your direct experience delivering polished UIs in React. A concise note on similar projects you have shipped or any open-source links is all I need to gauge fit.

Key deliverables
• A unified global style sheet or theme file applied across all existing components
• Refactored component styles where necessary to remove inline or ad-hoc rules
• Clear documentation (readme or in-code comments) so I can extend the system independently

Once I can pull the branch, run yarn install, and see a visually consistent, accessible interface, I will consider the job complete.