a futuristic metropolis encircled by a neon-soaked neon skyline with retro synth aesthetics and floating skyscrapers

city skyline urban architecture futuristic neon retro synth holographic glowing vibrant cinematic atmosphere light skyscraper building platform aesthetic texture environment science fiction iridescent hologram fantasy megalopolis prismatic illumination metropolis abstract chromatic colourful background surreal dreamlike modern technology radiant megacity digital utopian kaleidoscopic ai generated