Fix Select Dropdown Text Visibility in Dark Theme

[Eshajha19]

Summary

This PR fixes an issue where dropdown options were not visible in the dark theme due to browser default styling causing low-contrast (white-on-white) text. What Was Fixed ✅ Explicitly styled text color for dark backgrounds

✅ Added styling for elements to ensure readable dropdown text

✅ Fixed placeholder/empty option color for better UX

✅ Ensured consistent appearance across Chrome, Edge, and Firefox

✅ Improved accessibility by increasing contrast in dropdown menus

Before

Dropdown options appeared invisible or extremely low contrast

Users could not read filter and form select values

Poor usability in dark/glass UI theme

After

Dropdown options have proper dark background and light text

All select inputs are clearly readable

Placeholder options are visually distinct

Files Changed

dashboard.css (or global styles file)

This PR #651 closes issue #641

[vercel]

@Eshajha19 is attempting to deploy a commit to the Renu's projects Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions]

🎉 Thanks for the PR, @Eshajha19!

We really appreciate you taking the time to contribute to ExpenseFlow! 💙

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• Your code follows the project's coding standards
• All file changes are accurate and intentional
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