Opulent Art Nouveau interior, flowing organic curves, sinuous lines, ornate metalwork, stained glass windows, intricate mosaics, luxurious fabrics, velvet drapes, grand chandeliers, ornamental sconces, delicate filigree, shimmering crystal prisms, warm golden lighting, soft diffused glow, elegant floor lamps, sculptural table lamps, dramatic ceiling fixtures, 3D modeling, highly detailed textures, realistic materials, warm ambient occlusion.