@media (max-width: 768px) {
  body {
    padding: 80px 0 0 0;
    display: flex;
    justify-content: center;
    margin: 0;
    width: 100%;
    min-height: 100vh;
  }

  .container {
    padding: 0 10px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 auto;
    box-sizing: border-box;
  }

  .welcome-text {
    width: 100%;
    text-align: center;
    padding-top: 40px;
    margin-bottom: 20px;
    box-sizing: border-box;
  }

  .welcome-text h1 {
    font-size: 22px;
    margin-bottom: 12px;
    text-align: center;
  }

  .welcome-text p {
    font-size: 12px;
    margin-bottom: 6px;
    text-align: center;
    padding: 0 5px;
  }

  .welcome-text .goodbye {
    font-size: 14px;
    margin-top: 10px;
    text-align: center;
  }

  .login-box {
    width: 90%;
    max-width: 400px;
    padding: 12px;
    margin: 10px auto 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 100px;
  }

  .login-box form {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .login-box .user-box {
    width: 100%;
    margin-bottom: 20px;
  }

  .login-box .user-box input {
    font-size: 12px;
    width: 100%;
  }

  .login-box .user-box label {
    font-size: 12px;
  }

  .login-box form a {
    font-size: 12px;
    padding: 5px 10px;
    margin-top: 15px;
  }

  .radio-input {
    flex-direction: column;
    align-items: center;
    gap: 6px;
    margin: 10px 0;
    width: 100%;
  }

  .radio-input label {
    width: 100%;
    height: 32px;
    padding: 0 10px;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .radio-input label::before {
    width: 100%;
    height: 32px;
  }

  .radio-input .label input[type="radio"] {
    width: 12px;
    height: 12px;
  }

  .radio-input .label .text {
    font-size: 12px;
  }

  .theme-popup {
    transform: none;
    z-index: 1000;
    display: inline-block;
    width: auto;
    height: auto;
    box-sizing: border-box;
  }

  .theme-popup__button {
    font-size: 12px;
  }

  .theme-popup__list label span {
    font-size: 12px;
  }

  footer {
    height: 50px;
  }

  .footer-icons {
    gap: 15px;
  }

  .footer-icon {
    width: 20px;
    height: 20px;
  }

  .language-container {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1000;
  }
}

@media (max-width: 480px) {
  body {
    padding: 70px 0 0 0;
  }

  .container {
    padding: 0 5px;
    box-sizing: border-box;
  }

  .welcome-text {
    box-sizing: border-box;
  }

  .welcome-text h1 {
    font-size: 18px;
  }

  .welcome-text p {
    font-size: 11px;
    padding: 0 3px;
  }

  .welcome-text .goodbye {
    font-size: 12px;
  }

  .login-box {
    padding: 10px;
    margin-bottom: 80px;
  }

  .theme-popup {
    display: inline-block;
    width: auto;
    height: auto;
    box-sizing: border-box;
  }

  footer {
    height: 40px;
  }

  .footer-icons {
    gap: 12px;
  }

  .footer-icon {
    width: 18px;
    height: 18px;
  }

  .language-container {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1000;
  }
}