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When the user taps different items in the floating bottom navigation bar, the active tab indicator (a dark circular capsule) slides horizontally to the new selection. During the transition, the indicator exhibits elastic stretching (morphing) in the direction of movement, accompanied by a springy overshoot and settle. The icons crossfade color between inactive grey and active white, while the unique curved background shape of the tab bar remains stable, providing a playful yet premium navigation experience.
