Vibrant gymnasium interior, postmodernist architecture style, bold neon hues, electric blue walls, bright yellow accents, deep red flooring, metallic silver equipment, industrial concrete textures, geometric patterned ceilings, eclectic mix of materials, retro-futuristic vibe, high-contrast lighting, dramatic shadows, abstract artistic elements, dynamic composition, 1/1 aspect ratio, cinematic atmosphere, warm and cool color harmony.