Whimsical Halloween Party Invitation Poster

Halloween invitation poster, vertical 9:16, flat cartoon with sticker-style props. [Colors] violet #6A3E9E and deep plum #2E1B44 background, pumpkin #F08A1E, warm cream #FFEFD0 card, muted lavender clouds. [Layout] a tilted rounded ticket card anchored in the center as the hero, headline across the top, decorative props scattered around the border, a date and venue block at the bottom left, a small italic tag at the bottom right. [Typography] rounded bubble display headline with an orange gradient and white outline; condensed sans for the tagline; small caps with wide tracking for the date. [Subject] the ticket card shows a grinning jack-o'-lantern with a black cat perched above it, two friendly ghosts, a cobweb and a crescent moon; outside the card, a hanging spiderweb in the top corner, a skull, bats, stars, a bare tree branch. [Lighting & Mood] whimsical purple dusk, soft and inviting. [Details] drop shadow under the card, tiny flower and star confetti, candy corn, dashed dividers between event items.