Detailed Editorial Riyad Mahrez Sports Poster Artwork

Goal: Create a premium vertical sports poster design for {argument name="athlete name" default="Riyad Mahrez"}, styled like an Adidas football campaign, with a bold editorial collage aesthetic. Canvas: Vertical poster, 2:3 aspect ratio, clean white background with high contrast black, grey, and red graphics. Use a polished commercial sports design look with sharp typography, grain texture, and layered depth. Layout: Center a full body male footballer walking forward, slightly left of center, wearing an all black casual athletic outfit: black bomber jacket, black polo shirt, black slim trousers, and white sneakers. His pose is relaxed and confident, one hand in pocket, studio lit with soft shadows on the floor. Behind him, place a giant black and white cropped portrait silhouette of the same athlete’s head filling most of the background. Overlay very large vertical uppercase typography reading {argument name="main vertical word" default="MAHREZ"} along the left side, partially transparent and integrated over the background portrait. Add the small vertical text {argument name="side name text" default="RIYAD"} near the upper left edge. On the right side, include one large red geometric shape: a tilted red block/circle like form with a wide white diagonal stripe, partially cropped off the bottom right corner. Add one small red diamond shape near the top right corner. Text content: Include exactly 5 distinct text/logo elements: 1) the huge vertical word “MAHREZ” on the left, 2) the small vertical word “RIYAD” at upper left, 3) a red handwritten signature reading {argument name="signature text" default="Mahrez"} with the number “26” beneath it near the lower left, 4) small uppercase caption text reading “RIYAD MAHREZ / ALGERIA NATIONAL TEAM / WINGER” below the signature, and 5) a black Adidas logo at the bottom left corner. Visual style: Modern sports poster design, monochrome photography mixed with bold red accent shapes, gritty halftone/grain texture, strong contrast, clean negative space, luxury brand campaign feel, editorial magazine composition, crisp sans serif typography, realistic athlete photo treatment. Constraints: Use exactly 2 red geometric shapes, exactly 1 full body athlete, exactly 1 giant background portrait silhouette, exactly 5 text/logo elements as listed, no extra athletes, no extra logos, no watermark, no border, and keep the face realistic unless intentionally obscured by a subtle rectangular graphic overlay.