body {
    background-color: #ffffff;
    font-family: 'Segoe UI', sans-serif;
  }

  /* Base style (mobile-first) */
  .login-container {
    width: 90%;
    max-width: 350px;
    margin: 40px auto;
    background-color: #f9f9f9;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
  }

  .login-logo {
    text-align: center;
    margin-bottom: 20px;
  }

  .login-logo img {
    width: 60px;
  }

  /* Tablet (≥ 768px) */
  @media (min-width: 768px) {
    .login-container {
      max-width: 500px;
      padding: 30px;
    }

    .login-logo img {
      width: 60px;
    }
  }

  /* Desktop (≥ 992px) */
  @media (min-width: 992px) {
    .login-container {
      margin-top: 60px;
      padding: 40px;
      max-width: 500px;
    }

    .login-logo img {
      width: 60px;
    }
  }


  .btn-santaka {
    background-color: #1D225F;
    color: #fff;
    transition: 0.3s;
  }

  .btn-santaka:hover {
    background-color: #3F5BFA;
    color: #fff;
  }

  .btn-outline-santaka {
    border: 2px solid #1D225F;
    color: #1D225F;
    transition: 0.3s;
  }

  .btn-outline-santaka:hover {
    background-color: #3F5BFA;
    color: #fff;
    border-color: #3F5BFA;
  }

  .form-control:focus {
    border-color: #3F5BFA;
    box-shadow: 0 0 0 0.25rem rgba(63, 91, 250, 0.25);
  }

  .text-santaka {
    color: #1D225F;
  }