Complete Scientific Calculator

A responsive web-based scientific calculator combining HTML, CSS, and JavaScript in one file. Features include basic arithmetic, trigonometric functions (sin/cos/tan), logarithms, square roots, exponents, percentages, and math constants (π/e). Includes a clean interface with color-coded buttons, real-time display, error handling, and backspace functionality. Uses JavaScript's eval() for calculations with automatic syntax conversion for mathematical functions. Responsive design works on both desktop and mobile devices."