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In this crypto sending flow, typing numbers on the custom keypad triggers a highly responsive layout adjustment. As digits are added, the currency commas dynamically shift position, sliding horizontally to maintain correct mathematical formatting. When the number grows too large, the font size smoothly shrinks to fit the screen width. If the entered amount exceeds the user's balance, the conversion subtext slides down and fades out, replaced by a red 'Not enough ETH' error message that slides up. Deleting digits reverses the process, with the text growing back to its original size and commas sliding back or fading out seamlessly.
