Atoms Long Press to Get Started Pulse Interaction

The interaction begins on a light-themed onboarding screen with a central 'Get Started' button. Pressing and holding the button triggers an outer circular progress ring that fills up. Upon completion, the button rapidly expands and morphs into a full-screen transition, sweeping dark and yellow waves across the screen to switch the theme to dark mode. On the subsequent screen, three yellow spheres bounce and settle playfully, accompanied by a drawing progress line and staggered button fade-ins.