spiral notebook 3d model

Create a realistic 3D model of an open spiral notebook lying on a flat surface. The notebook has a soft cardboard cover, slightly bent corners, and visible metallic spiral binding along the left edge. The pages are slightly textured, with light pencil sketches faintly visible on the top page. Paper thickness and subtle shadows between pages should be noticeable. Use realistic lighting, soft reflections, and neutral background. Materials: paper with fine grain, matte cardboard cover, and glossy metal spiral. High poly model, detailed geometry, physically based rendering (PBR) materials, suitable for close-up visualization.