Search bar that unfolds

Navigation is the search itself. The small pill in the header unfolds into a large search bar, and a panel follows the field you are working on.

The pill becomes the barThe same shape grows from a compact pill into a large search bar, and the content blurs across from one to the other.
The field liftsThe active field turns white and rises out of a grey bar, and it glides to the next field when you finish the first.
The panel followsRegion, calendar and guests open under the field you are in, and change shape like a morphing dropdown.