.app{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;max-width:800px;margin:0 auto;padding:20px}.calculator{border:1px solid #ccc;padding:20px;border-radius:5px;margin-top:20px}.inputs{display:flex;gap:10px;margin-bottom:15px}.inputs input{padding:8px;flex:1}.buttons{display:flex;gap:10px;margin-bottom:15px}.buttons button{padding:8px 15px;background-color:#4caf50;color:#fff;border:none;border-radius:4px;cursor:pointer}.buttons button:hover{background-color:#45a049}.buttons button.active{background-color:#2e7d32}.result{margin-top:10px;font-weight:700;padding:10px;background-color:#f5f5f5;border-radius:4px}:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#000000de;background-color:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:2.2em;line-height:1.1}#root{width:100%}