ProsperFlow

ProsperFlow, my live financial dashboard (HTML / CSS / JavaScript, version-controlled on GitHub and served from Vercel), already pulls the right data but still feels utilitarian. I want it to feel polished and informative at a glance, so the immediate focus is on a cleaner, more intuitive UI and richer data insight through visualisation.

Here is what I need next:
• Refine the overall look and flow—typography, spacing, colour harmony and responsiveness—so users immediately see key metrics without hunting for them.
• Embed interactive bar, line and pie charts that pull from the existing data layer. I’m open to Chart.js, D3, ECharts or your preferred lightweight library as long as load times stay snappy on Vercel.
• Ensure the new visuals inherit the dashboard’s dark-/light-mode logic and remain fully responsive on mobile and desktop.
• Commit work through feature branches on GitHub; a clean PR history and concise commit messages are important to me for future maintenance.

Acceptance criteria
1. Page Lighthouse score remains ≥90 after the revamp.
2. Charts display correct data for all current account types and update dynamically when underlying figures change.
3. No new console errors or warnings in Chrome DevTools.
4. Final PR is merge-ready with README notes covering setup and any added dependencies.

If this sounds like a challenge you’re comfortable owning end-to-end, tell me how you’d approach the visual refresh and which chart library you’d lean on.