One issue I have with this implementation is with the the turn off screen and when locked.
They can both cancel each other. They are not related at a logical level. The issue is that if you set a timer shorter than the other, you will cancel the effect for each other.
When locked has its own clock and will override the turn off screen if it is shorterTurn off screen will override when locked when the time is shorter
I think we need to think about their relationship more closely. At the same time, dimming is also overridden by the other two controls. Dimming cannot be seen when dimming is longer than any of the other controls.
If you set all controls to be 1 minute, dimming is not shown.