A stylish and responsive calculator built using HTML, CSS, and JavaScript with light/dark mode toggle, smooth button animations, and error handling for invalid inputs.

• ➕ Basic Operations: Add, subtract, multiply, divide
• 🎨 Modern Glassy UI: Gradient background & rounded button design
• 🌙 Dark/Light Mode Toggle: Switch themes in one click
• 🎭 Button Animations: Hover & press effects for better UX
• 🛑 Error Handling: Friendly messages for invalid operations
• 👤 Footer Credit: Developed by Karthik Shet

• HTML5 – Structure
• CSS3 – Stylish buttons, gradients, and themes
• Vanilla JavaScript – Calculation logic & event handling

1. Clone the repository:

   git clone https://github.com/karthikrshet/modern-calculator.git

2. Open index.html in a browser.

3. Use the calculator for basic arithmetic operations.

4. Toggle themes using the "Switch Theme" button.

• Add Scientific Mode (sin, cos, %, square root).
• History Log: Keep a record of previous calculations.
• Mobile Optimization: Enhanced layout for small screens.