.dark-theme {
  body,
  main #content,
  #article,
  .card,
  .card-panel,
  .card .card-reveal,
  .card-stacked .preview:not(.preview--default),
  .card .preview:not(.preview--default),
  .collapsible-header,
  .collection .collection-item,
  .dropdown-content,
  .nav-panel-add,
  .nav-panel-search,
  .side-nav,
  .side-nav .collapsible-body,
  .side-nav.fixed .collapsible-body,
  .tabs {
    background-color: black;
  }

  .dropdown-content li:hover,
  .dropdown-content li.active,
  .dropdown-content li.selected {
    background-color: #575757;
  }

  main #content,
  #article article,
  #article article h1,
  #article article h2,
  #article article h3,
  #article article h4,
  #article article h5,
  #article article h6,
  .results a,
  .side-nav li > a,
  .side-nav li > a > i.material-icons {
    color: #dfdfdf;
  }

  .grey-text.text-darken-4 {
    color: #dfdfdf !important;
  }

  .side-nav li.active,
  .side-nav li:not(.logo) > a:hover,
  .side-nav .collapsible-header:hover,
  .side-nav.fixed .collapsible-header:hover {
    background-color: #333;
  }

  #article {
    box-shadow: 0 0 10px #575757;
  }

  nav,
  .card,
  .side-nav {
    box-shadow: 0 2px 2px 0 rgba(255, 255, 255, 0.4), 0 1px 5px 0 rgba(255, 255, 255, 0.4), 0 3px 1px -2px rgba(255, 255, 255, 0.4);
  }

  .logo img,
  .preview.preview--default,
  .typo-logo {
    filter: invert(100%);
  }

  .border-bottom,
  .collapsible {
    border-color: #222;
  }
}