Happy Halloween Party Poster

Professional Halloween party poster, vertical 9:16, painterly 3D illustration. [Colors] Deep maroon-to-amber gradient ground (#3A0E10 to #E5821F), violet shadows (#4A2A6E), pumpkin orange (#F58B1F), cool blue-white book pages. [Layout] Oversized hand-lettered wordmark across the top third, a centered hero vignette in the middle, small date and venue block at the bottom over a dark vignette. [Typography] Bouncy irregular HAPPY HALLOWEEN in white with black offset shadow, a bracketed caps subtitle, tall condensed numerals for the time. [Subject] A chibi witch with violet eyes and a wide-brim hat sits on a glowing jack-o'-lantern carried by an open floating spellbook; sheet ghosts drift beside her, a grey cat clings to the right edge, a second white cat floats at left. [Lighting & Mood] Candle-warm glow from inside the pumpkin, magical haze, playful rather than frightening. [Details] Twisted bare trees, hanging lanterns, pumpkin field, spider on a thread, drifting sparks and confetti.