retro 70s groovy swirl burst, floral , summer carnival backdrop, nostalgic wall art, poster, card. generative ai

groovy retro swirl burst summer carnival background vintage pattern design colorful psychedelic abstract party festival fun celebration texture 1960s 1970s hippie vibrant vector art style wallpaper decorative artistic funky shapes creative radial sunburst concentric backdrop geometric energetic dynamic nostalgia cheerful graphic twirl spiral motion festive atmosphere pop culture sun rays generative ai