Design a high-resolution digital collage with a retro-futuristic theme, combining photographic elements, digital graphic design, and textured materials like metallic surfaces and holographic patterns. The focal point will be a figure in retro fashion, layered with geometric shapes and patterns inspired by 1980s digital aesthetics. Incorporate digital elements like neon grids, chrome textures, and glitch effects to give the collage a futuristic edge. The background will feature a subtle, metallic gradient with digital textures resembling circuitry. Use sharp, contrasting lighting to highlight the geometric elements and give the image depth. Apply HDR and color grading to enhance the metallic sheen and neon colors.