Family Transfer Options Sheet Checkbox Interaction

When the user taps the 'Options' button, a 'Transfer Options' bottom sheet slides up from the bottom with a natural spring easing, while the background content dims. Inside the sheet, tapping the checkboxes triggers a highly responsive spring-loaded animation where the checkbox scales down slightly on press and pops back up with a checkmark reveal. Upon tapping 'Continue', the bottom sheet slides down and dismisses, and the main transaction screen seamlessly updates its fee estimate and morphs the primary action button from 'Continue' to 'Confirm'.