Opulent Art Nouveau interior, flowing organic lines, sinuous curves, elegant ornaments, stained glass windows, intricate metalwork, whimsical botanical motifs, luxurious velvet fabrics, rich jewel-toned colors, ornate chandeliers, delicate sconces, filigree-patterned lampshades, soft warm glow, ambient lighting, dramatic shadows, 1/2 composition, shallow depth of field, realistic textures, atmospheric rendering.