Rainbow Arc in a Futuristic Nightclub 3D Render

Ultra-detailed photorealistic 3D render of a futuristic nightclub interior at night. A luminous rainbow arcs across the ceiling, bending through glass panels and casting vibrant caustics on a glossy black floor. Neon signage, a holographic DJ booth, chrome railings, and curved velvet seating mingle with mirror surfaces. The scene is filled with fog and volumetric light beams, laser grids, and floating particles. Silhouetted dancers in futuristic outfits move under the rainbow glow. Camera angle is a low-shot from the floor, looking up toward a curved ceiling with neon prism patterns. Materials include glass, metal, chrome, polished stone, and velvet. Render quality: ray-traced global illumination, photorealistic PBR textures, high dynamic range, 8K resolution, cinematic bloom. Mood: electric, high-energy, cyberpunk sci-fi vibe. Optional elements: dramatic reflections on the floor and refracted rainbow caustics across surfaces.