Reworked 'Levels' for progress

main.py

@@ -1,15 +1,24 @@
 import customtkinter as ctk
 from ui.app import ExerciseDiaryApp
-import os
+import sys
 
 def main():
     # Set appearance
-    ctk.set_appearance_mode("Dark")  # Modes: "System" (standard), "Dark", "Light"
-    ctk.set_default_color_theme("blue")  # Themes: "blue" (standard), "green", "dark-blue"
+    ctk.set_appearance_mode("Dark")
+    ctk.set_default_color_theme("blue")
 
     # Initialize app
     app = ExerciseDiaryApp()
-    app.mainloop()
+    
+    try:
+        app.mainloop()
+    except KeyboardInterrupt:
+        print("\nApplication interrupted by user. Exiting...")
+        try:
+            app.destroy()
+        except:
+            pass
+        sys.exit(0)
 
 if __name__ == "__main__":
-    main()
+    main()