Design a futuristic, hightech vertical wayfinding sign for an underground parking lot. The sign should feature sleek metallic materials, incorporating LED light strips for illumination along the edges, with holographic or neon accents. The text is minimalistic, using a clean, modern sansserif font, displaying directional arrows and floor numbers in both English and symbols. The sign has a smooth, glossy surface, with sharp, angular contours, and integrated touchscreen panels or interactive eleme