Opulent Art Nouveau interior, flowing organic lines, sinuous curves, ornate metalwork, luxurious fabrics, velvet drapes, intricate wooden carvings, ornamental plaster ceilings, stained glass windows, subtle earthy tones, rich jewel-toned colors, metallic accents, glossy finishes, decorative tile work, mosaic patterns, floral motifs, foliage-inspired designs, elegant curvaceous furniture, soft warm lighting, high-contrast shading, atmospheric perspective, 1/2 composition, detailed textures, ambient occlusion.