[Contact F4-E: Dashboard team]: Card for the MAQCS demonstrator is not visible in dark mode

### Contact Details

JE

### Communication Type

Report

### Message

Card for the MAQCS demonstrator is not visible in dark mode. See attachment.

<img width="1046" height="812" alt="Image" src="https://github.com/user-attachments/assets/2a9ace36-5cf2-4540-a69d-9131876c3929" />

### Relevant code or log snippet

```shell

```