「HAPPY BIRTHDAY」は FontVibe AI で作成したゴールド3Dの文字エフェクトです。深く温かみのある色調と鏡のようなハイライトを備えた、高級感あふれる3Dゴールドメタリック文字です。受賞を思わせる華やかさと高級ブランドの質感で、YouTubeバナーや誕生日カード、Discordのヘッダーに映えます。

24-karat gold metallic surface — three-tone spectral gradient: deep amber-brown in shadow recesses, rich warm gold on lit faces, razor-thin champagne-white specular lines where direct light strikes. Single hard key light from upper-left at 45°, casting crisp directional shadows to lower-right. Background: near-black with faint warm amber ambient glow. No colored tints — pure dark void that forces the gold to own all luminosity in the frame. Square 1:1. Luxury greeting card mockup — thick matte black card stock on dark marble surface, propped slightly open. Front cover: 'HAPPY BIRTHDAY' in gold foil hot-stamp, three-tone gold spectrum, champagne bevel specular catching light. Beside the card: a small gold envelope and dried rose petals. Soft directional studio light from upper-left. Premium birthday card — luxury stationery aesthetic.