/* =====- RESPONSIVIDADE -===== */
@media (max-width: 768px) {
  body {
    padding: 24px 20px;
  }

  .container {
    padding: 0 12px;
  }

  .header-bar {
    padding: 15px 20px;
  }

  .header-left {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }

  .header-title {
    font-size: 20px;
  }

  .user-info {
    font-size: 12px;
  }

  .btn-logout {
    padding: 8px 16px;
    font-size: 13px;
  }

  .message {
    max-width: 85%;
  }

  .input-container {
    flex-wrap: wrap;
  }

  .input-unit {
    min-width: 0;
  }

  #send-button,
  .btn-sair {
    padding: 12px 20px;
    font-size: 14px;
  }

  .chat-container {
    height: 500px;
    min-height: 500px;
  }
}

@media (max-width: 480px) {
  body {
    padding: 24px 16px;
  }

  .container {
    padding: 0;
  }

  .login-box {
    padding: 30px 24px;
  }
  
  h1 {
    font-size: 28px;
  }
}