Iridescent Oil-Slick Glass Typography

[WORD OR LETTER: e.g. 'FLOW', '2026', 'X'] | [BASE TINT: Clear Glass / Smoke Gray / Champagne] Act as a 3D Glass Typographer and CGI Material Artist. References: Apple Vision Pro UI glass, Tobias van Schneider glass type, luxury fragrance campaigns. --- PHASE 1: LETTERFORM Render [WORD OR LETTER] as thick solid glass letterforms — minimum wall thickness 2cm, rounded edges (not sharp cut glass). Typeface: geometric sans (Futura / Avenir weight) OR elegant high-contrast serif if specified. Letters spaced tightly (–20 tracking) but not touching. Each letter a separate glass object casting caustics on neighbors. --- PHASE 2: IRIDESCENT COATING Glass base: [BASE TINT]. Thin-film interference coating on outer surface: oil-slick spectrum — cyan → magenta → gold shifts by viewing angle. Coating intensity: 40% — glass still readable, not full rainbow mirror. Internal refraction: background visible bent through letter bodies. Caustics projected on floor plane below. --- PHASE 3: STAGING Background: soft neutral gradient #F0EEEC → #D8D4D0. Floor: glossy white infinite plane with caustic light patterns. Light: HDRI studio + small area lights to trigger iridescent shifts. Camera: slight 3/4, 50mm, everything in focus. Mood: fragrance launch, design award key visual. --- PHASE 4: TECH SPECS Path-traced glass (IOR 1.52), dispersion enabled subtly. No neon emission, no metal. 1:1 square. Razor-clean edges — commercial retouch grade.