.landing-container,.login-container{max-width:400px;margin:80px auto;padding:40px;text-align:center}.landing-container h1,.login-container h1{margin-bottom:30px;color:#333}.user-info{margin-bottom:30px}.user-info .avatar{width:80px;height:80px;border-radius:50%;margin-bottom:15px}.user-info p{margin:5px 0;color:#555}.btn{display:inline-block;padding:12px 24px;font-size:16px;text-decoration:none;border:none;border-radius:6px;cursor:pointer}.btn-primary{background-color:#007bff;color:#fff}.btn-primary:hover{background-color:#0056b3}.btn-secondary{background-color:#6c757d;color:#fff}.btn-secondary:hover{background-color:#545b62}.alert{padding:12px 16px;margin-bottom:20px;border-radius:6px}.alert-error{background-color:#f8d7da;color:#721c24;border:1px solid #f5c6cb}