Family Bottom Modal to Card Morph

Upon tapping the 'Continue' button in an onboarding bottom sheet, the modal dynamically morphs to the next step. The blue header card expands vertically while its internal illustration smoothly transitions from a single card with a hidden icon into a checklist of backup options (cloud, key, pencil). Simultaneously, the body text crossfades to new copy with a highlighted phrase, and the primary button label updates. The entire transition uses a fluid spring animation that keeps the user contextually grounded without a full-screen page transition.