Prism Lantern in Silver Rain

icy arctic blue and silver bauhaus geometric poster of a lighthouse keeper in a rain-soaked back alley, cheerful sunlit mood despite the downpour, towering lantern tower silhouette reimagined as a human figure wrapped in rough burlap panels and angular seams, carrying a prism lantern that fractures light into sharp triangles, wet cobblestones reflecting radiant geometry, rain rendered as diagonal silver bars, paper-thin light shards and circular signal motifs drifting through the scene, bold flat shapes, crisp grid-based composition, stark negative space, clean poster typography feel, optimistic modernist energy, high-detail graphic illustration, 16:9 aspect ratio