.App{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}main{padding:1rem}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f4f7f6}.container{max-width:800px;margin:40px auto;background-color:#fff;padding:30px;border-radius:8px;box-shadow:0 4px 15px #0000001a}button{padding:10px 18px;background-color:#007bff;color:#fff;border:none;border-radius:5px;font-size:16px;cursor:pointer;transition:background-color .2s}button:hover{background-color:#0056b3}input,select,textarea{width:100%;padding:12px;border:1px solid #ccc;border-radius:5px;box-sizing:border-box;font-size:16px;margin-top:5px}.form-group{margin-bottom:20px}label{display:block;margin-bottom:5px;font-weight:600}.message{margin-top:15px;padding:15px;border-radius:5px;text-align:center}.success{background-color:#d4edda;color:#155724}.error{background-color:#f8d7da;color:#721c24}nav{background-color:#2a3a4b;padding:10px 20px;border-radius:5px;margin-bottom:20px;display:flex;justify-content:space-between;align-items:center}nav a{color:#fff;text-decoration:none;padding:8px 15px;font-weight:500}nav a:hover{background-color:#4a6fa5;border-radius:4px}nav button{background-color:#dc3545;color:#fff}h1,h2{color:#2a3a4b}