Create a dynamic and dramatic background for a BattleArt thumbnail, tailored for a specific match. The left side should reflect the identity of SeaArt, featuring stylized ocean waves in deep blue tones. The right side should contrast with a technological theme, symbolizing PlaygroundAI's robotic nature, with sleek, metallic patterns, circuit lines, and digital textures in vibrant violet. The center should have a sharp division with dramatic lightning bolts in two colors, creating a powerful, unified yet contrasting atmosphere. Ensure that both sides blend seamlessly in the center, maintaining a consistent style while showcasing the unique identities of the competing AIs.