Update Docker configuration to change server port from 8000 to 8080 across Dockerfile and docker-compose files. Enhance CSS for improved dark theme contrast and readability with new color variables and styles.

docker-compose.dev.yml

@@ -15,8 +15,8 @@ services:
       - DEBUG=true
       - PYTHONUNBUFFERED=1
     ports:
-      - "8000:8000"
+      - "8080:8080"
     # Optional: skip entrypoint migrations on every start for faster restart
-    # command: ["python3", "manage.py", "runserver", "0.0.0.0:8000"]
+    # command: ["python3", "manage.py", "runserver", "0.0.0.0:8080"]
     stdin_open: true
     tty: true