Create a set of four luxury UI-style buttons inspired by a modern dark interface design, similar to premium app icons. The buttons must be square with rounded corners, evenly spaced, aligned in a clean grid layout, all facing forward (front view), with no perspective distortion. Each button should have a smooth matte black surface with soft shadows and subtle depth, creating a minimal and elegant 3D effect. The lighting should be soft and diffused, with gentle highlights on the edges. Each button must contain a single centered icon in a vivid red tone with a slight glow, representing: a location pin (event location) an envelope with a small checkmark detail (RSVP / confirmation of presence) a gift box (gift suggestion) an elegant dress (female dress code, not a suit) The icons should be modern, clean, and slightly embossed into the surface or floating subtly above it, with a soft red glow and smooth finish. Avoid overly complex details — keep it minimal and refined. The background must be a dark, smooth gradient (black to dark gray), clean and uncluttered, matching the aesthetic of high-end UI design. Maintain a balanced composition with equal spacing between all buttons, ensuring they are easy to crop individually. Ultra high quality, 4K resolution, soft shadows, minimalistic luxury style. Negative prompt: text, words, letters, watermark, multiple repeated icons, wrong icons, male suit, cluttered design, colorful palette, low quality, blur, distortion.