create an ultra realistic luxury interior render based exactly on the provided archicad screenshot keep the same staircase geometry side cladding shape step proportions wall positions doors windows floor pattern and camera angle exactly as shown do not change the design or geometry in any way important do not change the doors windows wall openings or any architectural elements keep everything exactly as designed the only new architectural addition should be a glass railing for the staircase stair design add a minimal luxury glass railing to the staircase the railing should be elegant clean and contemporary with clear glass and refined detailing keep it visually light and premium suitable for a high end interior it must fit naturally with the existing stair design and not change the staircase form stair material change the stair finish to luxury black tiles the stair tiles should feel premium elegant and realistic with clean edges and accurate scale use a high end black stone black porcelain tile look with subtle reflections and refined texture make the tile finish seamless and consistent across all treads and risers other materials keep the rest of the interior materials realistic and premium keep the dark herringbone floor as designed unless otherwise specified improve all material realism shadows reflections and texture depth openings remove all opening lines from doors and windows but do not change the actual doors or windows themselves keep all frames and openings exactly in place lighting and realism use soft natural daylight from the left side add realistic contact shadows ambient occlusion soft reflections and believable light falloff make the scene feel like a real luxury interior photo not cgi important do not change the doors do not change the windows do not change the wall openings do not redesign the staircase geometry only add the glass railing change the stair finish to luxury black tiles and improve realism extra line make the final image look like a professionally photographed luxury staircase interior with elegant black tiled stairs a minimal clear glass railing soft daylight and premium realistic material depth
