Make cards translucent

[SheepTester]

Info

There's no issue for this but it's bothered me a bit that the cards are grey while the background is dark bluish. On the figma the background was dark grey because it didn't have any of the Diamondhacks theming.

Description

What changes did you make? List all distinct problems that this PR addresses. Explain any relevant
motivation or context.

made cards translucent

Changes

• changed $card-bg and $card-stroke to translucent white colors
• login card has a background blur because of the binary decal in the back
• updated the dashboard hero image to be transparent (I previously could not because on Figma they used a blend mode for the light thing, but I changed it to just a translucent white. doesn't look too different)

Type of Change

• Patch (non-breaking change/bugfix)
• Minor (non-breaking change which adds functionality)
• Major (fix or feature that would cause existing functionality to not work as
  expected)
• Documentation (A change to a README/description)
• Continuous Integration/DevOps Change (Related to deployment steps, continuous integration
  workflows, linting, etc.)
• Other: (Fill In)

If you've selected Patch, Minor, or Major as your change type, make sure to bump the version before merging in package.json!

Testing

I have tested that my changes fully resolve the linked issue ...

• locally.
• on the testing API/testing database.
• with appropriate Postman routes. Screenshots are included below.

Checklist

• I have performed a self-review of my own code.
• I have followed the style guidelines of this project.
• I have appropriately edited the API version in the package.json file.
• My changes produce no new warnings.

Screenshots

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
hackathon-portal	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 10, 2025 9:00am

[github-actions]

Thanks for contributing!
If you've made changes to the API's functionality, please make sure to bump the package
version—see this guide to semantic versioning for details—and
document those changes as appropriate.

[alexzhang1618]

lgtm to me to me