「Happy birthday Sofi」は FontVibe AI で作成したY2K バブリーの文字エフェクトです。Y2K バブリーの膨らんだ文字。パステルのピンクからパープルへ、ぷっくりと丸く柔らかな膨張フォルムに、ツヤのあるキャンディ質感を組み合わせました。2000年代のスウィートなパーティーガール美学です。

Y2K bubbly inflated letters — extremely round pillow-soft letter forms completely inflated like over-pressurized balloons. Pastel pink-to-lavender gradient across the glossy candy surface. Strong white specular highlight on the top of each inflated letter. Extremely smooth and soft surface. Sweet 2000s Y2K party aesthetic. Maximum bubbly inflation quality. LETTERFORM PRIORITY: when the chosen font carries its own treatment, that font's letterform shapes take priority and own the letters; this style governs the over-inflated pillow form, the glossy candy surface and the speculars. FALLBACK MATERIAL: if the font carries no material of its own, render the letters as extremely round over-inflated pillow letters with an ultra-smooth glossy candy surface and a strong white top specular. COLOR PRIORITY: keep the font's own colors if specified; otherwise a pastel pink-to-lavender gradient. Portrait 2:3. Set “Happy birthday Sofi” on three lines, with “Happy” and “birthday” smaller above the dominant “Sofi,” centered in a sweet Y2K birthday composition. Keep every word exactly as written. Make all lettering feel maximally inflated, soft and pillowy, with bulging rounded surfaces that seem ready to pop, coated in glossy candy pink fading into lavender with hints of iridescent sky blue. Bright white rounded highlights sit along the top of each letter, with gentle matching inner glow and soft shadows beneath, giving the text a polished toy-like depth. Surround the words with a few floating bubblegum-pink hearts, tiny chrome stars, pastel balloons and delicate sparkles, leaving generous clear space around the lettering. Use a soft pink-to-lavender background with a faint pearlescent sheen and a subtle pool of light behind the central text. The overall feel is joyful, affectionate and unmistakably early-2000s Y2K, with the oversized name as the unmistakable focal point.