Halloween Party Retro Poster Design

Halloween party poster, vertical 9:16, grunge retro print. [Colors] Deep plum #3B1B52, near-black #100A14, acid lime #C6E23A, faded pink mist #C58BB8, pale bone #E9E4D2. [Layout] Aged date tag in the top right corner, gothic HAPPY HALLOWEEN stacked through the middle with a pumpkin nested into the lettering, a subtitle line beneath, a giant skeletal hand rising from the lower left, two angled banner plates at right carrying a trick-or-treat slogan, carved pumpkin and QR block at the bottom, thin logo strip across the top. [Typography] Distressed blackletter with dripping ink, slab caps for the banners, tiny condensed caps for the footer. [Subject] Skeleton hand with peeling photoreal bones reaching upward through purple fog, haunted castle on a hill inside the moon, bat swarm, jack-o'-lantern glowing lime, cobweb in the corner. [Lighting & Mood] Smoke-filled backlight, high-contrast horror-comic mood. [Details] Scratches, speckled ink, worn paper edges, halftone dots, torn border.