@media (max-width: 992px) {
  nav.primary {
    position: fixed;
    top: 0;
    left: -100%;
    width: 80%;
    height: 100vh;
    background: #000;
    color: #fff;
    overflow-y: auto;
    transition: left 0.3s ease;
    z-index: 9999;
    padding: 1rem;
  }

  nav.primary.open {
    left: 0;
  }

  nav.primary ul {
    list-style: none;
    margin: 0;
    padding: 0;
    transition: transform 0.3s ease;
  }

  nav.primary ul.submenu-active {
    transform: translateX(-105%);
  }

  nav.primary ul ul {
    display: none;
    position: absolute;
    top: 0;
    left: 100%;
    width: 100%;
    background: #000;
    height: 100%;
    padding: 1rem;
  }

  nav.primary ul ul.active {
    display: block;
    height: 100vh;
  }

  #close-menu {
    display: none;
    margin-bottom: 1rem;
  }
}