Opulent Art Nouveau mansion, grand staircase, sinuous iron railings, ornate furnishings, velvet drapes, intricately patterned rugs, flowing organic lines, botanical motifs, whiplash curves, luxurious textiles, jewel-toned colors, gilded accents, ornamental mirrors, ambient warm lighting, soft focus, shallow depth of field, 1/1 composition, symmetrical balance, richly textured surfaces, realistic reflections, dramatic shadows.