abstract retro mid-century minimal style poster. psychedelic collection. brutalist modern

atomic googie retro nuclear abstract geometric 50s 1950s vertical poster oval ellipse polygon yellow molecule atom electron nucleus brutalism postmodern primitive print stylized minimalism minimal flat shape vector graphic simple y2k brutalist funky pattern modern futuristic geometry contemporary bold symbol groovy swiss brutal collection set stylish doodle linear star sun mid-century style psychedelic poster collection