.login-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2)}.login-box{background:#fff;padding:40px;border-radius:10px;box-shadow:0 10px 25px #0003;width:100%;max-width:400px}.login-box h1{text-align:center;margin-bottom:30px;color:#333}.login-box p{color:#555;line-height:1.5;margin-bottom:20px}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:5px;color:#555;font-weight:500}.form-group input{width:100%;padding:12px;border:1px solid #ddd;border-radius:5px;font-size:14px}.form-group input:focus{outline:none;border-color:#667eea}.error-message{color:#dc3545;background-color:#f8d7da;border:1px solid #f5c6cb;padding:10px;border-radius:5px;margin-bottom:15px;font-size:14px}.login-btn{width:100%;padding:12px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:5px;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s}.login-btn:hover{transform:translateY(-2px)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:#f5f5f5}