Next fight promo poster: Spheres vs. Circles — “Smooth Confidence Meets Flat Vengeance”

{
  "input": {
    "prompt": " Graphic-design style illustration as an in-universe event poster plastered on a city wall. Left: a gleaming sphere with a smug, polished shine; right: a minimalist circle rendered like a bold ink ring, ominously calm. Tagline: “WE NEVER STOP.” Include date/time, venue “Geometria City Arena,” and tiny sponsor logos; torn edges and street texture for realism.  "
  }
}