Modern architectural design portfolio, A4 size, leather-bound cover, gold-embossed title, clean white background, minimalist layout, 3D modeling software, Autodesk Revit, SketchUp, realistic rendering, high-quality images, sectional drawings, floor plans, elevations, detailed annotations, precise dimensions, elegant font, sans-serif typography, subtle drop shadows, subtle texture, softbox lighting, shallow depth of field, slight blur effect.