This is a lightweight (50KB) web calculator built with vanilla HTML, CSS & JS. Features: basic operations (+, -, ×, ÷), percentage, backspace, and keyboard support. Clean dark UI with responsive design works on all devices. Smooth animations and auto-scaling display. No frameworks - perfect for learning DOM manipulation. Free under MIT License.

A modern dark/light mode toggle button with sun/moon icons, animated transitions, and a sleek, responsive design using HTML, CSS, and JavaScript. Fully customizable and beginner-friendly.