「HAPPY BIRTHDAY」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. Wide 16:9 birthday title composition. Render “HAPPY” above “BIRTHDAY,” with BIRTHDAY dominating the lower line in enormous maximally inflated Y2K candy letters. Every character is swollen into a soft, over-pressurized pillow form, with rounded bulges, plush seams of reflected light, and zero sharp corners. Surface color flows from bubblegum pink through lavender into pale aqua at the edges, finished in ultra-smooth glossy toy plastic. A bold creamy-white specular highlight sits across the upper curve of every letter, with soft pink and violet bounce light glowing beneath. Set against a dreamy pastel pink-to-periwinkle sky gradient, lightly hazed around the title so the candy forms pop forward. Floating chrome balloon hearts, tiny five-point stars, pearl beads, translucent butterflies, and curled ribbon streamers frame the words without crowding them. A few confetti dots drift behind the lettering, while miniature gift-box shapes sit low at the corners. Sweet celebratory Y2K party mood, glossy, youthful, radiant, and irresistibly inflated.