apply a detailed traditional architectural interior style to the existing 3d model preserving the original geometry and layout walls finished with full height painted panelling in a classic rectangular grid with consistent proportions and subtle depth integrate panelled detailing around openings where possible stair balustrade formed with turned timber balusters painted in off white paired with a dark stained timber handrail and matching stair nosings introduce a more substantial newel post with traditional stepped detailing stair treads wood stair structure painted in warm white tones with smooth clean curves and refined junctions flooring in rich timber with a darker border detail openings may include soft arches integrated within the panelling for a cohesive architectural feel lighting is primarily soft natural daylight with gentle shadows and a calm balanced exposure no dramatic or feature lighting materials are high end and timeless painted timber dark stained wood and soft neutral textiles overall style is elegant layered and sophisticated traditional classic architecture interpreted with precision and restraint focus on material and detail overlay only no major geometry changes
