Modern, sleek, futuristic application architecture design document template, minimalist background, simple lines, bold fonts, professional tone, A4 size, white paper, horizontal layout, section dividers, numbered headings, bullet points, diagrams in blue and grey hues, 3D visualization of system components, cloud infrastructure illustration, network topology map, zoomed-in details, subtle shading, glass-like reflection, ambient Occlusion, softbox lighting, cinematic composition.