.book-contents .entity-list-item {
  .icon {
    width: 4px;
    border-radius: 1px;
    justify-self: stretch;
    align-self: stretch;
    height: auto;
    margin-inline-end: $-xs;
  }
  .icon:after {
    opacity: 0.5;
  }
  .icon svg {
    display: none;
  }
  p {
    margin-bottom: 0;
  }
  .inner-page {
    padding-top: 0;
    padding-bottom: 0;
  }
}

.entity-list-item + .chapter-expansion {
  display: flex;
  padding: 0 $-m $-m $-m;
  align-items: center;
  border: 0;
  width: 100%;
  position: relative;
  > .icon {
    width: 4px;
    height: auto;
    border-radius: 0 0 1px 1px;
    align-self: stretch;
    flex-shrink: 0;
    &:before {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 1px;
      background-color: currentColor;
      content: '';
      opacity: 0.5;
    }
    &:after {
      opacity: 0.5;
    }
  }
  .icon svg {
    display: none;
  }
  > .content {
    flex: 1;
  }
  .chapter-contents-toggle {
    border-radius: 0 4px 4px 0;
    padding: $-xs ($-m + $-xxs);
    width: 100%;
    text-align: start;
  }
  .chapter-contents-toggle:hover {
    background-color: rgba(0, 0, 0, 0.06);
  }
}

.entity-list-item.has-children {
  padding-bottom: 0;
  > .icon {
    border-radius: 4px 4px 0 0;
  }
}

.inset-list {
  display: none;
  .entity-list-item-name {
    font-size: 1rem;
  }
  .entity-list-item-children {
    padding-top: 0;
    padding-bottom: 0;
  }
}

.sidebar-page-nav {
  $nav-indent: $-m;
  list-style: none;
  @include margin($-s, 0, $-m, $-xs);
  position: relative;
  &:after {
    content: '';
    display: block;
    position: absolute;
    left: 0;
    @include rtl {
      left: auto;
      right: 0;
    }
    @include lightDark(background-color, rgba(0, 0, 0, 0.2), rgba(255, 255, 255, 0.2));
    width: 2px;
    top: 5px;
    bottom: 5px;
    z-index: 0;
  }
  li {
    margin-bottom: 4px;
    font-size: 0.95em;
    position: relative;
  }
  .h1 {
    padding-inline-start: $nav-indent;
  }
  .h2 {
    padding-inline-start: $nav-indent * 1.5;
  }
  .h3 {
    padding-inline-start: $nav-indent * 2;
  }
  .h4 {
    padding-inline-start: $nav-indent * 2.5;
  }
  .h5 {
    padding-inline-start: $nav-indent*3;
  }
  .h6 {
    padding-inline-start: $nav-indent*3.5;
  }
  .current-heading {
    font-weight: bold;
  }
  li:not(.current-heading) .sidebar-page-nav-bullet {
    @include lightDark(background-color, #BBB, #666, true);
  }
  .sidebar-page-nav-bullet {
    width: 6px;
    height: 6px;
    position: absolute;
    left: -2px;
    top: 30%;
    border-radius: 50%;
    box-shadow: 0 0 0 6px #F2F2F2;
    @include lightDark(box-shadow, 0 0 0 6px #F2F2F2, 0 0 0 6px #111);
    z-index: 1;
    @include rtl {
      left: auto;
      right: -2px;
    }
  }
}

// Sidebar list
.book-tree .sidebar-page-list  {
  list-style: none;
  @include margin($-xs, -$-s, 0, -$-s);
  padding-inline-start: 0;
  padding-inline-end: 0;

  ul {
    list-style: none;
    padding-inline-start: 1rem;
    padding-inline-end: 0;
  }

  .entity-list-item {
    padding-top: 2px;
    padding-bottom: 2px;
    background-clip: content-box;
    border-radius: 0 3px 3px 0;
    padding-inline-end: 0;
    .content {
      width: 100%;
      padding-top: $-xs;
      padding-bottom: $-xs;
      max-width: calc(100% - 20px);
    }
  }
  .entity-list-item.selected {
    @include lightDark(background-color, rgba(0, 0, 0, 0.06), rgba(255, 255, 255, 0.06));
  }
  .entity-list-item.no-hover {
    margin-top: -$-xs;
    padding-inline-end: 0;
  }
  .entity-list-item-name {
    font-size: 1em;
    margin: 0;
    margin-inline-end: $-m;
  }
  .chapter-child-menu {
    font-size: .8rem;
    margin-top: -.2rem;
    margin-inline-start: -1rem;
  }
  .chapter-contents-toggle {
    display: block;
    width: 100%;
    text-align: start;
    padding: $-xxs $-s ($-xxs * 2) $-s;
    border-radius: 0 3px 3px 0;
    line-height: 1;
    margin-top: -$-xxs;
    margin-bottom: -$-xxs;
    &:hover {
      @include lightDark(background-color, rgba(0, 0, 0, 0.06), rgba(255, 255, 255, 0.06));
    }
  }
  .entity-list-item .icon {
    z-index: 2;
    width: 4px;
    height: auto;
    align-self: stretch;
    flex-shrink: 0;
    border-radius: 1px;
    opacity: 0.8;
  }
  .entity-list-item .icon:after {
    opacity: 1;
  }
  .entity-list-item .icon svg {
    display: none;
  }
}

.chapter-child-menu ul.sub-menu {
  display: none;
  padding-inline-start: 0;
  position: relative;
  margin-bottom: 0;
}

// Sortable Lists
.sortable-page-list, .sortable-page-sublist {
  list-style: none;
}
.sort-box {
  margin-bottom: $-m;
  padding: $-m $-xl;
  position: relative;
  &::before {
    pointer-events: none;
    content: '';
    border-radius: 4px;
    opacity: 0.5;
    border: 2px solid var(--color-book);
    display: block;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    position: absolute;
  }
}
.sort-box-options {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
.sort-box-options .button {
  margin-inline-start: 0;
}
.sortable-page-list {
  margin-inline-start: 0;
  padding: 0;
  .entity-list-item > span:first-child {
    align-self: flex-start;
  }
  .sortable-selected, .sortable-selected:hover {
    outline: 1px dotted var(--color-primary);
    background-color: var(--color-primary-light) !important;
  }
  .entity-list-item > div {
    display: block;
    flex: 1;
  }
  > ul {
    margin-inline-start: 0;
  }
  .sortable-page-sublist {
    margin-bottom: $-m;
    margin-top: 0;
    padding-inline-start: $-m;
  }
  li {
    @include lightDark(background-color, #FFF, #222);
    border: 1px solid;
    @include lightDark(border-color, #DDD, #666);
    margin-top: -1px;
    min-height: 38px;
  }
  li.text-page, li.text-chapter {
    border-inline-start: 2px solid currentColor;
  }
  li:first-child {
    margin-top: $-xs;
  }
}
.sortable-page-list li.placeholder {
  position: relative;
}
.sortable-page-list li.placeholder:before {
  position: absolute;
}
.sort-box summary {
  list-style: none;
  font-size: .9rem;
  cursor: pointer;
}
.sort-box summary::-webkit-details-marker {
  display: none;
}
details.sort-box summary .caret-container svg {
  transition: transform ease-in-out 120ms;
}
details.sort-box[open] summary .caret-container svg {
  transform: rotate(90deg);
}
.sort-box-actions .icon-button {
  opacity: .6;
}
.sort-box .flex-container-row:hover .sort-box-actions .icon-button,
.sort-box .flex-container-row:focus-within .sort-box-actions .icon-button {
  opacity: 1;
}
.sort-box-actions .icon-button[disabled] {
  visibility: hidden;
}
.sort-box-actions .dropdown-menu button[disabled] {
  display: none;
}
.sort-list-handle {
  cursor: grab;
}

.activity-list-item {
  padding: $-s 0;
  display: grid;
  grid-template-columns: min-content 1fr;
  grid-column-gap: $-m;
  font-size: 0.9em;
}
.card .activity-list-item {
  padding: $-s $-m;
}

.user-list-item {
  display: inline-grid;
  padding: $-s;
  grid-template-columns: min-content 1fr;
  grid-column-gap: $-m;
  font-size: 0.9em;
  align-items: center;
  > div:first-child {
    line-height: 0;
  }
}

ul.pagination {
  display: inline-block;
  list-style: none;
  margin: $-m 0;
  padding-inline-start: 1px;
  li {
    float: left;
  }
  li:first-child {
    a, span {
      border-radius: 3px 0 0 3px;
    }
  }
  li:last-child {
    a, span {
      border-radius: 0 3px 3px 0;
    }
  }
  a, span {
    display: block;
    padding: $-xxs $-s;
    border: 1px solid #CCC;
    margin-inline-start: -1px;
    user-select: none;
    @include lightDark(color, #555, #eee);
    @include lightDark(border-color, #ccc, #666);
  }
  li.disabled {
    cursor: not-allowed;
  }
  li.active span {
    @include lightDark(color, #111, #eee);
    @include lightDark(background-color, rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.5));
  }
}

.compact ul.pagination {
  margin: 0;
}

.entity-list, .icon-list {
  margin: 0 (-$-m);
  h4 {
    margin: 0;
  }
  hr {
    margin: 0;
  }
  .text-small.text-muted {
    color: #AAA;
    font-size: 0.75em;
    margin-top: $-xs;
  }
  .text-muted p.text-muted {
    margin-top: 0;
  }
  .page.draft .text-page {
    color: var(--color-page-draft);
    fill: var(--color-page-draft);
  }
  > .dropdown-container {
    display: block;
  }
}

.icon-list hr {
  margin: $-s $-m;
  max-width: 140px;
  opacity: 0.25;
  height: 1.1px;
}

.icon-list hr + hr, .icon-list hr:first-child, .icon-list hr:last-child {
  display: none;
}

.entity-list-item, .icon-list-item {
  padding: $-s $-m;
  display: flex;
  align-items: center;
  gap: $-m;
  background-color: transparent;
  border: 0;
  width: 100%;
  position: relative;
  word-break: break-word;
  h4 a {
    color: #666;
  }
  > span:first-child {
    flex-basis: 1.88em;
    flex: none;
  }
  > span:last-child {
    flex: 1;
    text-align: start;
  }
  > .content {
    min-width: 0;
  }
  &:not(.no-hover) {
    cursor: pointer;
  }
  &:not(.no-hover):hover {
    @include lightDark(background-color, rgba(0, 0, 0, 0.06), rgba(255, 255, 255, 0.06));
    text-decoration: none;
    border-radius: 4px;
  }
  &.outline-hover:hover {
    background-color: transparent;
  }
  &:focus {
    @include lightDark(background-color, #eee, #222);
    outline: 1px dotted #666;
    outline-offset: -2px;
  }
}

.entity-list-item.disabled {
  pointer-events: none;
  cursor: not-allowed;
  opacity: 0.8;
  user-select: none;
  background: var(--bg-disabled);
}

.entity-list-item-path-sep {
  display: inline-block;
  vertical-align: top;
  position: relative;
  top: 1px;
  svg {
    margin-inline-end: 0;
  }
}

.split-icon-list-item {
  display: flex;
  align-items: center;
  gap: $-m;
  background-color: transparent;
  border: 0;
  width: 100%;
  position: relative;
  word-break: break-word;
  border-radius: 4px;
  > a {
    padding: $-s $-m;
    display: flex;
    align-items: center;
    gap: $-m;
    flex: 1;
  }
  > a:hover {
    text-decoration: none;
  }
  .icon {
    flex-basis: 1.88em;
    flex: none;
  }
  &:hover {
    @include lightDark(background-color, rgba(0, 0, 0, 0.06), rgba(255, 255, 255, 0.06));
  }
}

.icon-list-item-dropdown {
  margin-inline-start: auto;
  align-self: stretch;
  display: flex;
  align-items: stretch;
  border-inline-start: 1px solid rgba(0, 0, 0, .1);
  visibility: hidden;
}
.split-icon-list-item:hover .icon-list-item-dropdown,
.split-icon-list-item:focus-within .icon-list-item-dropdown {
  visibility: visible;
}
.icon-list-item-dropdown-toggle {
  padding: $-xs;
  display: flex;
  align-items: center;
  cursor: pointer;
  @include lightDark(color, #888, #999);
  svg {
    margin: 0;
  }
  &:hover {
    @include lightDark(background-color, rgba(0, 0, 0, 0.06), rgba(255, 255, 255, 0.06));
  }
}

.card .entity-list-item:not(.no-hover, .book-contents .entity-list-item):hover {
  @include lightDark(background-color, #F2F2F2, #2d2d2d);
  border-radius: 0;
}
.card .entity-list-item .entity-list-item:hover {
  background-color: #EEEEEE;
}

.entity-list-item-children {
  padding: $-m $-l;
  > div {
    overflow: hidden;
    padding: 0 0 $-xs 0;
  }
  .entity-chip {
    text-overflow: ellipsis;
    height: 2.5em;
    overflow: hidden;
    text-align: start;
    display: block;
    white-space: nowrap;
  }
  > .entity-list > .entity-list-item:last-child {
    margin-bottom: -$-xs;
  }
}

.entity-list-item-image {
  align-self: stretch;
  width: 140px;
  flex: none;
  background-size: cover;
  background-position: 50% 50%;
  border-radius: 3px;
  position: relative;
  margin-inline-end: $-l;

  &.entity-list-item-image-wide {
    width: 220px;
  }

  .svg-icon {
    @include lightDark(color, #fff, rgba(255, 255, 255, 0.6));
    font-size: 1.66rem;
    margin-inline-end: 0;
    position: absolute;
    bottom: $-xs;
    left: $-xs;
  }

  @include smaller-than($m) {
    width: 80px;
  }
}

.chapter > .entity-list-item-image {
  width: 60px;
}

.entity-list.compact {
  font-size: 0.6 * $fs-m;
  h4, a {
    line-height: 1.2;
  }
  .entity-item-snippet {
    display: none;
  }
  .entity-list-item p {
    font-size: $fs-m * 0.8;
    padding-top: $-xs;
  }
  .entity-list-item p:empty {
    padding-top: 0;
  }
  p {
    margin: 0;
  }
  > p.empty-text {
    display: block;
    font-size: $fs-m;
  }
  hr {
    margin: 0;
  }
  @include smaller-than($m) {
    h4 {
      font-size: 1.666em;
    }
  }
}

.entity-item-tags {
  font-size: .75rem;
  opacity: 1;
  .primary-background-light {
    background: transparent;
  }
  .tag-name {
    background-color: rgba(0, 0, 0, 0.05);
  }
}

.dropdown-container {
  display: inline-block;
  vertical-align: top;
  position: relative;
}

.dropdown-menu {
  display: none;
  position: absolute;
  z-index: 999;
  top: 0;
  list-style: none;
  inset-inline-end: 0;
  margin: $-m 0;
  @include lightDark(background-color, #fff, #333);
  box-shadow: 0 1px 6px 0 rgba(0, 0, 0, 0.18);
  border-radius: 3px;
  min-width: 180px;
  padding: $-xs 0;
  @include lightDark(color, #555, #eee);
  fill: currentColor;
  text-align: start !important;
  max-height: 500px;
  overflow-y: auto;
  &.anchor-left {
    inset-inline-end: auto;
    inset-inline-start: 0;
  }
  &.wide {
    min-width: 220px;
  }
  .text-muted {
    color: #999;
    fill: #999;
  }
  li.active a {
    font-weight: 600;
  }
  button {
    width: 100%;
    text-align: start;
  }
  li.border-bottom {
    border-bottom: 1px solid #DDD;
  }
  li hr {
    margin: $-xs 0;
  }
  .icon-item, .text-item, .label-item {
    padding: 8px $-m;
    @include lightDark(color, #555, #eee);
    fill: currentColor;
    white-space: nowrap;
    line-height: 1.4;
    cursor: pointer;
    &:hover, &:focus {
      text-decoration: none;
      background-color: var(--color-primary-light);
      color: var(--color-primary);
    }
    &:focus {
      outline: 1px solid var(--color-primary);
      outline-offset: -2px;
    }
    svg {
      margin-inline-end: $-s;
      display: inline-block;
      width: 16px;
    }
  }
  .text-item {
    display: block;
  }
  .label-item {
    display: grid;
    align-items: center;
    grid-template-columns: auto min-content;
    gap: $-m;
  }
  .label-item > *:nth-child(2) {
    opacity: 0.7;
    &:hover {
      opacity: 1;
    }
  }
  .icon-item {
    display: grid;
    align-items: start;
    grid-template-columns: 16px auto;
    gap: $-m;
    svg {
      margin-inline-end: 0;
      margin-block-start: 1px;
    }
  }
}

// Shift in sidebar dropdown menus to prevent shadows
// being cut by scrollable container.
.tri-layout-right .dropdown-menu,
.tri-layout-left .dropdown-menu {
  inset-inline-end: $-xs;
}

// Books grid view
.featured-image-container {
  position: relative;
  overflow: hidden;
  min-height: 140px;
  background-size: cover;
  background-position: 50% 50%;
  transition: opacity ease-in-out 240ms;
  a {
    display: block;
  }
  img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
  }
}
.featured-image-container-wrap {
  position: relative;
  .svg-icon {
    @include lightDark(color, #fff, rgba(255, 255, 255, 0.6));
    font-size: 2rem;
    margin-inline-end: 0;
    position: absolute;
    bottom: 10px;
    left: 6px;
  }
}
.grid-card:hover .featured-image-container {
  opacity: .5;
}

.action-link-list {
  //padding: $-s 0;
}
.action-link {
  background: transparent;
  border: none;
  color: currentColor;
  padding: $-m 0;
}

.active-link-list {
  a {
    display: inline-block;
    padding: $-s;
  }
  a:not(.active) {
    @include lightDark(color, #444, #888);
  }
  a:hover {
    @include lightDark(background-color, rgba(0, 0, 0, 0.05), rgba(255, 255, 255, 0.05));
    border-radius: 4px;
    text-decoration: none;
  }
  &.in-sidebar {
    a {
      display: block;
      margin-bottom: $-xs;
    }
    a.active {
      border-radius: 4px;
      @include lightDark(background-color, rgba(0, 0, 0, 0.05), rgba(255, 255, 255, 0.05));
    }
  }
}

.entity-meta-item {
  display: flex;
  line-height: 1.2;
  margin: 0.6em 0;
  align-content: start;
  gap: $-s;
  a {
    line-height: 1.2;
  }
  svg {
    flex-shrink: 0;
    width: 1em;
    margin: 0;
  }
}