[UI/UX Design] Design a dashboard KPI tile with sparkline, trend arrow, and period picker

[thlpkee20-wq]

Description

Design a reusable KPI tile — value, sparkline, trend arrow with delta, and a small period picker (7d/30d/QTD/YTD) — used across investor, issuer, and admin dashboards.

Requirements and context

• Must be accessible (WCAG 2.1 AA), responsive, and documented in the design system
• Should be consistent with existing patterns and easy to review
• Relevant code: src/components/KpiTile.tsx, src/pages/StartupDashboard.tsx

Suggested execution

• Fork the repo and create a branch
• git checkout -b uiux/kpi-tile
• Implement changes
  • Tile anatomy with tokenized spacing
  • Sparkline color rules (positive/negative/flat)
  • Period-picker keyboard model
• Validate accessibility and responsive assumptions

Test and commit

• Run checks
  • npm run lint and component/visual tests
• Cover edge cases
  • zero-data period, negative delta, very long value string
• Include screenshots/before-after and accessibility (axe) notes

Example commit message

design: KPI tile with sparkline

Guidelines

• Minimum 95 percent test coverage
• Clear documentation
• Timeframe: 96 hours

[Ugooweb]

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You will get a PR before deadline. Please assign

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[GOE001]

@GOE001 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would like to work on this

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[Opulencechuks]

@Opulencechuks has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I am confident that i can implement this having worked on something similar in the past

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[mikewheeleer]

@mikewheeleer has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would like to work on this issue, and I have good knowledge of smart contacts and Sorabani Rust. Kindly assign it to me.

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Congratulations, @mikewheeleer! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

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This issue has been completed by @mikewheeleer as part of the Stellar Wave Program's 7th Wave 🥳

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