“HAPPY” is a Birthday text effect Texteffekt erstellt mit FontVibe KI. Runde Versalien mit Regenbogenstreifen und klarer weißer Kontur, umgeben von Konfetti und Luftballontrauben vor einem satten Partyhintergrund von Pink bis Türkis.

Joyful celebration light field — backgrounds drawn from deep midnight navy, velvety near-black, rich warm charcoal, and dark burgundy with subtle tonal warmth; every background holds visual weight and depth, never flat or pure white. Key light arrives from directly overhead at 85–90 degrees as a broad soft high-intensity wash — the quality of a grand celebration spotlight — landing evenly across the composition with minimal directional shadow. Secondary fill from both flanks simultaneously at 40–45 degrees at 50% key intensity eliminates shadow zones while preserving full three-dimensional volume. Atmospheric particles inhabit the mid-ground at low-medium density: fine confetti paper fragments, drifting sparkle glints, floating botanical petal shapes — their scale and density shift with direction energy. Color temperature shifts by context: cool electric spectrum (magenta, cyan, lime-green) deepens the darkness for neon party directions; warm rose-amber spectrum softens the background for floral calligraphy directions; full-saturation rainbow vivid for balloon party directions. Background depth is reinforced by a subtle corner vignette; the central field brightens toward maximum luminosity at the text zone. Letter surface material and texture are defined entirely by each font's own prompt_core — this style provides only the celebration light field and atmospheric environment. When no specific direction or font material is active: deep midnight navy background, overhead broad soft white key light at 90 degrees, fine multicolor confetti scatter at 10% scene density, equal-intensity soft fills from both flanks, no floor surface, no props. A white ceramic mug on a clean white surface, centered, square 1:1 product mockup. The 'HAPPY' rainbow balloon text effect is printed on the mug face, vivid and clear. Soft studio light from upper-right, slight warm tone. Clean white background. The perfect personalized birthday gift product shot.