Update app.py

app.py

@@ -1,13 +1,11 @@
 """
 app.py
 ======
-Mutation Explainability Intelligence System — Entry Point
-
-Imports the UI from ui_components.py and launches.
-This file intentionally contains no logic or layout.
+Entry point only. Imports layout and styles, then launches.
 """
 
-from ui_components import build_demo
+from ui_layout import build_demo
+from ui_styles import THEME, CSS
 
 demo = build_demo()
-demo.launch()
+demo.launch(theme=THEME, css=CSS)