This single-file application is designed to be fully self-contained, responsive, and professional. It uses a high-performance `requestAnimationFrame` loop for the simulation and purely descriptive, modern UI components. ```html Free Juggling Site Swap Pattern Animator & Simulator

Free Juggling Site Swap Pattern Animator & Simulator

Visualize complex juggling notation in real-time.

Playback

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Settings

Ball Trails

Pattern Stats

Calculated: Requires 3 balls

Invalid Pattern