Midnight Spooky Halloween Ghost Festival

Professional Halloween event poster, vertical 9:16, glossy 3D render. [Colors] Midnight indigo to cobalt (#0B1B4A to #2B5EA8), holographic ghost shifting pearl-pink to mint (#F3C7E0 / #B8F0E4), warm sparks in gold (#FFB43C). [Layout] Two-line title at the top, ghost-and-broom hero cutting diagonally across the center, gothic castle and full moon at the right, ferris wheel silhouette at the left, event time block mid-lower, QR square bottom right. [Typography] High-contrast display serif with sharp thorn serifs for the headline, thin spaced capitals for the subtitle, tabular numerals for the schedule. [Subject] Plump iridescent ghost gripping a besom broom, a tiny carved pumpkin lantern dangling from the handle, two smaller ghosts flanking it, each with simple black oval eyes. [Lighting & Mood] Cool moonlit blue with warm firefly bokeh, wet reflective ground, magical and inviting. [Details] Star sparkles, cobweb corner ornaments, floating embers off the broom bristles, faint reflection in the water.