*{
    box-sizing:border-box;
  }

  html, body{
    margin:0;
    padding:0;
    min-height:100%;
  }

  body{
    min-height:100vh;
    padding:24px 16px;
    display:flex;
    align-items:center;
    justify-content:center;
    background:#eef3f8;
    font-family:"Segoe UI","Inter",Arial,sans-serif;
  }

  .login-shell{
    width:100%;
  }

  .login-card{
    width:100%;
    max-width:420px;
    margin:0 auto;
    background:#fff;
    border:1px solid #d8e1ec;
    border-radius:20px;
    box-shadow:0 10px 30px rgba(31,45,61,.08);
    padding:28px 24px 24px;
  }

  .login-message{
    margin:0 0 14px;
    text-align:center;
    color:#5f6f82;
    font-size:14px;
    line-height:1.5;
  }

  .login-logo{
    max-width:280px;
    max-height:280px;
    width:auto;
    height:auto;
    margin:0 auto 18px;
    display:block;
    object-fit:contain;
  }

  .login-group{
    margin-bottom:14px;
  }

  .login-group .input-group{
    width:100%;
    display:flex;
  }

  .login-group .input-group-addon{
    width:46px;
    display:flex;
    align-items:center;
    justify-content:center;
    background:#f7f9fc;
    border:1px solid #d8e1ec;
    border-right:0;
    color:#2f435a;
    border-radius:12px 0 0 12px;
  }

  .login-group .form-control{
    flex:1;
    height:46px;
    border:1px solid #d8e1ec;
    border-radius:0 12px 12px 0;
    box-shadow:none;
    font-size:15px;
    padding:10px 14px;
  }

  .login-group .form-control:focus{
    border-color:#4f86c6;
    box-shadow:0 0 0 3px rgba(79,134,198,.15);
  }

  .login-btn{
    width:100%;
    height:48px;
    border:0;
    border-radius:12px;
    background:#2f435a;
    color:#fff;
    font-size:16px;
    font-weight:600;
    transition:.2s ease;
  }

  .login-btn:hover,
  .login-btn:focus{
    background:#243547;
    color:#fff;
  }

  @media (max-width: 767px){
    body{
      padding:18px 12px;
    }

    .login-card{
      max-width:100%;
      padding:34px 24px 26px;
      border-radius:22px;
    }

    .login-logo{
      max-width:280px;
      max-height:280px;
      margin:0 auto 24px;
    }

    .login-group{
      margin-bottom:18px;
    }

    .login-group .input-group-addon{
      width:54px;
      font-size:18px;
    }

    .login-group .form-control{
      height:58px;
      font-size:18px;
      padding:14px 16px;
    }

    .login-btn{
      height:58px;
      font-size:19px;
      border-radius:14px;
    }
  }

  @media (max-width: 420px){
    body{
      padding:16px 10px;
    }

    .login-card{
      padding:30px 20px 24px;
    }

    .login-logo{
      max-width:280px;
      max-height:2800px;
      margin-bottom:20px;
    }

    .login-group .input-group-addon{
      width:50px;
      font-size:17px;
    }

    .login-group .form-control{
      height:54px;
      font-size:17px;
      padding:12px 14px;
    }

    .login-btn{
      height:54px;
      font-size:18px;
    }
  }