A modern mobile app icon featuring a minimal calendar and clock combined into one symbol, representing reminders and upcoming events. The icon should fill the entire frame with no empty or white background. Use a smooth gradient background blending blue, purple, and pink tones. The calendar should be simple, rounded, and slightly 3D with soft shadows, showing subtle colored dots for events. A small analog clock overlaps the bottom corner of the calendar, clean and minimal. Style should be sleek, vibrant, and high contrast, optimized for mobile app icons. No text, no letters, no numbers. Centered composition, soft lighting, glossy finish, high resolution, 1024x1024, iOS and Android app icon style.