Halloween Livestream Sale Poster

Halloween livestream sale poster, vertical 9:16, dark cinematic promo layout. [Colors] midnight indigo #16112B fading to violet #3B2A5E, pumpkin orange #F5841F, cream white #F4EEE4 for the copy stage, muted lavender mist. [Layout] atmospheric frame around a large blank white product area in the center; header wordmark at the top; a wide coupon banner beneath it; a vertical stack of small coupon cards down the left; footer benefit bar with three icons. [Typography] elegant brush-script headline in white, compact sans for coupon values, bold numerals, thin rule dividers. [Subject] a haunted castle skyline with lit windows at the top left, a full moon behind torn clouds, bats, drifting fog banks, a witch hat and a ghost floating in the lower mist, two glowing carved pumpkins flanking the bottom corners, candle stubs. [Lighting & Mood] foggy midnight hush, premium and slightly sinister. [Details] coupon card reading "$20 off orders over $199", icon badges for free returns, eco material and authenticity, purple ribbon tabs, footer trust strip.