body{font-family:Arial,sans-serif;line-height:1.6;margin:0;padding:0;color:#333}header,footer{background-color:#4caf50;color:#fff;text-align:center;padding:1rem 0}main{max-width:800px;margin:2rem auto;padding:0 1rem}.input-container{margin-bottom:2rem}textarea{width:100%;min-height:150px;padding:.5rem;margin-bottom:1rem;border:1px solid #ddd;border-radius:4px;resize:vertical}button{background-color:#4caf50;color:#fff;border:none;padding:.7rem 1.5rem;font-size:1rem;cursor:pointer;border-radius:4px}button:hover{background-color:#45a049}.result-container{background-color:#f9f9f9;padding:1rem;border-radius:4px;border:1px solid #ddd}.error{color:red}.loading{color:#666;font-style:italic}