futuristic seamless pattern with geometric s. gradient with purple tones. 3d isometric . synthwave retro background

1980 abstract ambient background banner colorful cosmos decorative design duotone electronic fabric future futurism futuristic geometric geometry gradient hipster holographic illustration isometric light line liquid memphis party pattern poster psychedelic purple rave retro retrowave seamless set shape shapes space sphere striped synthwave tomorrow tones trendy triangle unusual vector vibrant violet wave zine