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On the invite code screen, once the six-digit code is filled, a dark 'Next' button slides up into the bottom-right corner. Tapping this button triggers a smooth morphing transition: the wide pill-shaped button shrinks horizontally into a small, rounded square, while its text and arrow icon fade out to reveal a minimalist loading dot animation. This transition uses spring physics to give the button a tactile, elastic feel as it compresses into its loading state.
