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Double-tapping a post triggers a large, gradient-filled pink heart to burst from the center of the screen with a springy scale-up and subtle rotation. Simultaneously, smaller secondary hearts drift upwards and outwards, mimicking a bubbly, floating effect. The main heart quickly shrinks and fades away, while the bottom-bar heart icon fills in red, providing a satisfying and delightful micro-interaction that confirms the user's action.
