Function safe_area 

pub fn safe_area() -> Insets

The window’s safe-area insets, in points. Zero on every backend that clamps Day’s root to the safe area natively (the default everywhere); nonzero only where a backend runs the root edge-to-edge — today day-android’s opt-in immersive mode (docs/layout.md, the android platform page). Compose it yourself where a background should run under the system bars: paint the background unpadded, pad the content by these insets. The read is tracked, but layout attributes like .padding capture the value at build time — a mid-run inset change (rotation) does not re-pad already-built pages.