"Send Message" button not clearly styled in dark mode #160

Description:
On the Contact Us page, the Send Message button is not styled properly in dark mode. The button blends into the background, making it hard for users to notice or interact with.

Steps to Reproduce:
Switch the site to dark mode.
Navigate to the Contact Us page.
Observe the Send Message button.

Expected Behavior:
The Send Message button should have clear contrast and be easily visible in dark mode.
The button should match the overall dark mode theme while maintaining proper accessibility standards.

Actual Behavior:
The button lacks proper styling and visibility in dark mode.

Environment:
Browser: [e.g., Chrome, Firefox]
Device: [e.g., Desktop, Mobile]
OS: [e.g., Windows, macOS]