Architectural Concrete and Leather Flat Lay

A modern architectural flat lay featuring raw material swatches and design accessories resting on a textured light grey cast concrete slab, items include a swatch of dark oxblood full-grain leather, a brass architectural scale ruler, a piece of dark smoked glass, a small sample block of black terrazzo marble, rolled trace paper drawings tied with natural twine, and a matte black heavy metal fountain pen, precisely laid out in a sculptural spatial arrangement with strong negative space, lighting is clean directional side sunlight coming through a slatted window casting geometric linear shadow bars across the concrete surface, high-contrast play between light and shade, top-down perspective looking straight down at the scene, shot on a 50mm lens at f/7.1 for total structural clarity, refined textural balance highlighting cold raw concrete against warm organic leather and cool smooth glass, minimalist architectural editorial style, modern design studio mood.