[BUG] Texts not visible in dark mode

[debangshu919]

Description

In dark mode, certain texts are not visible. This impacts accessibility and user experience.

Steps to reproduce

1. Go to the deployed landing page: Algorithm Vizualizer Platform
2. Switch to dark mode
3. Observe the hero section and other affected areas where the text blends into the background.

Screenshots

Expected behviour

• Text should adapt to dark mode by switching to white or light-colored text with sufficient contrast.

[debangshu919]

i would like to work on this issue

[CipherYuvraj]

@debangshu919 work on it and attach screenshots in your pr