Create a luxury event poster for an unofficial "Met Gala After Dark" concept, elegant Me…

Create a luxury event poster for an unofficial "Met Gala After Dark" concept, elegant Metropolitan Museum of Art-inspired grand staircase scene, Zendaya-style high-fashion silhouette as an editorial figure, warm cinematic lighting, date/time/location placeholder block, refined typography, premium invitation design, rich colors, clearly labeled "fan concept, not official".