Checkout & payments

Send and receive panels with a flip button; the converted amount rolls into place.

A promo-code row: Apply shows a spinner, a valid code becomes a removable chip and the total counts down.

Percentage tip buttons that show the cash amount under each, plus a Custom option that opens a small input.

Send a gift card: pick an amount or type one, write a note, preview the card face, and choose send now or on a date.