Halloween Costume Night Neon Poster

Vertical 9:16 Halloween costume-night poster, bold flat graphic design. [Colors] Pure black (#080808) field, neon lime (#8DF03A), hot pink (#FF6FB5), signal red (#F03B3B), electric violet (#7B3FF2), flame orange (#F79A1E). [Layout] Full-bleed black with a giant headline stacked in three tiers at the top; four sticker-style ghosts arranged in a loose arc across the middle; a small flaming pumpkin at bottom center; a beaded chain draped in a long loop along the lower edge; accent bolts at the sides. [Typography] Oversized neon-lime geometric sans for the first line, letterspaced white caps for the English subline, a big white date, and a slanted italic brush line at the bottom in white with a red offset shadow. [Subject] Four rubber-hose cartoon ghosts with hollow oval eyes and open mouths — one red with a spiked aura, one fuzzy pink, one bright green dancing with raised fists, one small purple — plus a carved pumpkin wearing a flame collar. [Lighting & Mood] Neon poster energy, extreme contrast, graphic and loud. [Details] Four-point sparkles, lightning-bolt stickers, dotted chain of pink beads, subtle print grain, slight halftone on the flat color fields.