Spooky Halloween Event Poster

Professional Halloween event poster, vertical 9:16, 3D rendered character composition. [Colors] Dusky plum and violet gradient (#3B2258 to #5A3576) with blurred city bokeh, hero pumpkin in vivid orange (#F0801F), periwinkle and rose card fills. [Layout] Header block at top, hero pumpkin centered with characters flanking, a two-by-two rounded card grid beneath for four activities, a wide schedule bar, and a pill call-to-action at the very bottom. [Typography] Chunky white sans headline with a soft violet shadow, small caps subtitle, bold dark labels inside cards, clean sans for time and venue. [Subject] A huge lit jack-o'-lantern with carved triangle eyes as the focal point, two smiling ghosts beside it, a tiny witch in a purple robe holding balloons at right, a wicker basket of wrapped candy at left. [Lighting & Mood] Twilight glow with candy-colored bokeh, festive and family-safe. [Details] Balloons printed with stars and moons, small pumpkins at the base, drifting leaves, rounded card borders with soft shadows, dashed dividers.