@media (max-width: 576px) {
  nav ul {
    display: none;
    flex-direction: column;
    position: fixed;
    width: 100%;
    height: 140px;
    top: 80px;
    right: 0px;
    background-color: var(--colorBG);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.3);
    z-index: 1999;
  }

  nav ul.active {
    display: flex;
  }

  nav ul li {
    justify-content: space-between;
    text-align: center;
    padding: 10px;
    margin: auto 20px;
    align-items: center;
  }

  #new-chat::before {
    content: "Novo Chat";
    font-size: 1rem;
    color: var(--color1);
  }

  #login::before {
    content: "Login";
    font-size: 1rem;
    color: var(--color1);
  }

  #theme::before {
    content: " Tema";
    font-size: 1rem;
    color: var(--color1);
  }

  .hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    margin-left: auto;
    cursor: pointer;
    z-index: 100;
  }

  .hamburger .line {
    width: 25px;
    height: 3px;
    background-color: var(--colorText);
    transition: 0.3s;
  }

  header nav {
    margin-left: 0;
  }

  main {
    padding: 80px 20px 0 20px;
  }
}

@media (max-width: 992px) {
  header {
    padding: 0 20px;
  }
}

.loader {
  /* Estilo do círculo de carregamento */
  border: 4px solid var(--color3); /* Cor do fundo do círculo (mais clara) */
  border-top: 4px solid var(--color1); /* Cor da parte que gira (mais escura) */
  border-radius: 50%;
  width: 20px;
  height: 20px;

  /* Animação */
  animation: spin 1s linear infinite;

  /* Alinhamento com o texto */
  display: inline-block;
  margin-left: 10px;
  vertical-align: middle;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}