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Upon scrolling up on the home screen, the 3x2 grid of large, stylized category icons smoothly collapses and morphs into a compact, horizontal tab bar at the top of the viewport. The large 3D-like icons scale down and transition into simplified flat icons, while their text labels fade out. The search bar slides up and out of view, making room for the newly formed tab bar which snaps into place as a sticky navigation element. This scroll-driven interaction provides a fluid, continuous transition between high-level exploration and focused category browsing.
