Create an original Happy Birthday image for BirthdayTo. Use case: a birthday typography poster where the greeting is the main visual object. Style: retro risograph poster texture, limited colors, slight ink grain, bold shapes. Audience: modern, upbeat, social-media-native, stylish but not tied to a brand. Canvas: 3:4 aspect ratio, large readable typography as the hero with supporting birthday elements. Palette: electric blue, hot pink, violet, and clean black. Primary decorative focus: wrapped gifts, supported by birthday party details. Text requirement: include only the exact readable words "Happy Birthday"; no misspellings, no fake names, no dates, no small filler text. Composition requirement: high-quality finished image, clear focal point, clean margins, useful copy space, no watermark. Safety requirement: no recognizable real people, no celebrity likeness, no public figure, no brand logo, no trademarked character, no copyrighted character, no visible address, no license plate, no private-property identifier.
