.auth-page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

#auth-container {
  display: flex;
  flex-direction: column;
  width: 25rem;
  justify-content: center;
  align-items: center;
  font-size: 18px;
  margin: 0 auto;
  flex-grow: 1;
}

.auth-form {
  display: none;
}

.auth-form.active {
  display: flex;
  flex-direction: column;
  padding: 1rem;
}

.auth-title {
  text-align: center;
  font-size: 18px;
}

.loggin-form {
  display: grid;
  grid-template-columns: 1fr;
}

.register-form {
  display: grid;
  grid-template-columns: 1fr;
}

.email-input,
.password-input,
.nickname-input {
  border-radius: var(--main-br);
  border: 1px solid var(--main-color);
  font-size: 18px;
  padding: var(--main-pd);
  margin: var(--main-mg);
  box-shadow: 1px 1px 1px rgba(0, 0, 0, 0.5);
}

.email-input:focus,
.password-input:focus,
.nickname-input:focus {
  outline: none;
  border-color: #eff9fe;
  box-shadow: 0 0 8px rgba(0, 123, 255, 0.25);
}

.submit-btn {
  border: 1px solid var(--main-color);
  background-color: #fff;
  color: var(--main-color);
  margin: var(--secondary-mg);
  border-radius: var(--main-br);
  padding: var(--main-pd);
  font-size: 18px;
  font-weight: 600;
  box-shadow: 1px 1px 1px rgba(0, 0, 0, 0.5);
  cursor: pointer;
}

.submit-btn:hover {
  border: none;
  color: #fff;
  background-color: var(--main-color);
}

/* Modal Window */
.modal {
  margin: 0 auto;
  border: none;
  border-radius: var(--main-br);
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  text-align: center;
  max-width: 400px;
  background: var(--secondary-theme);
  color: #fff;
}

.modal::backdrop {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(5px);
}

.success-icon {
  font-size: 3rem;
  color: #4caf50;
  margin-bottom: 15px;
}

.material-symbols-outlined {
  font-size: 48px;
}

.modal-btn {
  border: 1px solid var(--main-color);
  background-color: #fff;
  color: var(--main-color);
  margin: var(--secondary-mg);
  border-radius: var(--main-br);
  padding: 8px 16px;
  font-size: 18px;
  font-weight: 600;
  box-shadow: 1px 1px 1px rgba(0, 0, 0, 0.5);
  cursor: pointer;
}

/* Mobile Responsive Design */

/* Tablets (768px and below) */
@media (max-width: 768px) {
  #auth-container {
    width: 90%;
    max-width: 400px;
    font-size: 16px;
    padding: 1rem;
  }

  .auth-form {
    width: 100%;
  }

  .email-input,
  .password-input,
  .nickname-input {
    font-size: 16px;
    padding: 0.75rem;
    margin: 0.75rem 0;
  }

  .submit-btn,
  .modal-btn {
    padding: 0.75rem 1rem;
  }

  .modal {
    width: 90%;
    max-width: 350px;
    padding: 20px;
  }

  .success-icon {
    font-size: 2.5rem;
  }
}

/* Mobile phones (480px and below) */
@media (max-width: 480px) {
  #auth-container {
    width: 95%;
    max-width: 350px;
    font-size: 14px;
    padding: 0.5rem;
  }

  .auth-form {
    width: 100%;
    padding: 0.75rem;
  }

  .auth-title {
    font-size: 16px;
  }

  .email-input,
  .password-input,
  .nickname-input {
    font-size: 14px;
    padding: 0.6rem;
    margin: 0.5rem 0;
  }

  .submit-btn,
  .modal-btn {
    font-size: 14px;
    padding: 0.6rem 0.8rem;
    transition: background-color 0.2s;
  }

  .modal {
    width: 95%;
    max-width: 300px;
    padding: 15px;
  }

  .success-icon {
    font-size: 2rem;
  }
}

.modal-btn:hover {
  border: none;
  color: #fff;
  background-color: var(--main-color);
}