summer time. 80s palm trees on a sunset. retro sci-fi sun in triangle, futuristic logo. synthwave and retrowave style.

1980 80s abstract backdrop background banner beach cyberpunk design disco flyer funky future futuristic galaxy geometric hipster icon illustration island light logo palm party pink poster reality retro retrowave scifi sky space style summer sun sunset synth synthwave template tree trendy triangle tropic tropical vector vibrant vintage violet virtual yellow