body {
     background: linear-gradient(135deg, #221f1f, #224abe);
     height: 100vh;
     display: flex;
     align-items: center;
     justify-content: center;
 }

 .login-card {
     border-radius: 16px;
     padding: 30px;
 }

 .login-logo {
     width: 120px;
     margin-bottom: 15px;
 }

 .form-control {
     border-radius: 10px;
     height: 45px;
 }

 .btn-login {
     border-radius: 10px;
     height: 45px;
     font-weight: bold;
 }

 .input-group-text {
     background: #fff;
     border-left: 0;
     cursor: pointer;
 }

 .form-control:focus {
     box-shadow: none;
     border-color: #4e73df;
 }