@versions-list-width: 320px;
@history-toolbar-height: 40px;
@history-change-list-padding: 16px;

history-root {
  height: 100%;
  display: block;
}

.history-react {
  display: flex;
  height: 100%;
  background-color: @history-main-bg;

  .history-header {
    height: @history-toolbar-height;
    background-color: @history-react-header-bg;
    color: @history-react-header-color;
    font-size: @font-size-small;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-sizing: border-box;
  }

  .doc-panel {
    flex: 1;
    display: flex;
    flex-direction: column;

    .toolbar-container {
      border-bottom: 1px solid @history-react-separator-color;
      padding: 0 8px;
    }

    .doc-container {
      flex: 1;
      overflow-y: auto;
    }
  }

  .change-list {
    display: flex;
    flex-direction: column;
    width: @versions-list-width;
    font-size: @font-size-small;
    border-left: 1px solid @history-react-separator-color;
    box-sizing: content-box;
  }

  .toggle-switch-label {
    flex: 1;

    span {
      display: block;
    }
  }

  .history-version-list-container {
    flex: 1;
    overflow-y: auto;
  }

  .history-all-versions-scroller {
    overflow-y: auto;
    height: 100%;
  }

  .history-all-versions-container {
    position: relative;
  }

  .history-versions-bottom {
    position: absolute;
    height: 8em;
    bottom: 0;
  }

  .history-toggle-switch-container,
  .history-version-day,
  .history-version-details {
    padding: 0 @history-change-list-padding;
  }

  .history-version-day {
    position: sticky;
    z-index: 1;
    top: 0;
    display: block;
    padding-top: 12px;
    padding-bottom: 4px;
    line-height: 20px;
    background-color: @white;
  }

  .history-version-details {
    display: flex;
    align-items: flex-start;
    padding-top: 8px;
    padding-bottom: 8px;

    &.history-version-selectable:hover {
      cursor: pointer;
      background-color: @neutral-10;
    }
  }

  .history-version-selected {
    background-color: @green-10;
  }

  .history-version-metadata-time {
    display: block;
    margin-bottom: 4px;
    color: @neutral-90;

    &:last-child {
      margin-bottom: initial;
    }
  }

  .history-version-metadata-users,
  .history-version-changes {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .history-version-metadata-users {
    display: inline;

    > li {
      display: inline-flex;
      align-items: center;
      margin-right: 8px;
    }
  }

  .history-version-changes {
    > li {
      margin-bottom: 4px;
    }
  }

  .history-version-user-badge-color {
    @size: 8px;
    display: inline-block;
    width: @size;
    height: @size;
    margin-right: 4px;
    border-radius: 2px;
  }

  .history-version-day,
  .history-version-change-action,
  .history-version-metadata-users,
  .history-version-origin,
  .history-version-saved-by {
    color: @neutral-70;
  }

  .history-version-change-doc {
    color: @neutral-90;
  }

  .history-version-divider {
    margin: 6px 8px;
    border-color: @neutral-20;
  }

  .history-version-badge {
    margin-bottom: 4px;
    margin-right: 10px;
  }

  .history-version-label {
    margin-bottom: 4px;

    &:last-child {
      margin-bottom: initial;
    }
  }

  .loading {
    padding-top: 10rem;
    font-family: @font-family-serif;
    text-align: center;
  }

  & > .loading {
    flex: 1;
  }

  .history-all-versions-scroller .loading {
    position: sticky;
    bottom: 0;
    padding: @line-height-computed / 2 0;
    background-color: @gray-lightest;
  }

  .history-version-saved-by {
    &-label {
      margin-right: 8px;
    }
  }

  .dropdown.open {
    .history-version-dropdown-menu-btn {
      background-color: rgba(@neutral-90, 0.08);
      box-shadow: initial;
    }
  }

  .history-version-dropdown-menu-btn {
    @size: 30px;
    padding: 0;
    width: @size;
    height: @size;
    font-size: @font-size-small;
    color: @neutral-90;
    background-color: transparent;

    &:hover,
    &:active {
      z-index: initial;
      background-color: rgba(@neutral-90, 0.08);
      box-shadow: initial;
    }
  }

  .history-version-main-details {
    flex: 1;
  }

  .history-loading-panel {
    padding-top: 10rem;
    font-family: @font-family-serif;
    text-align: center;
  }

  .history-file-entity-operation-badge {
    flex: 0 0 auto;
    text-transform: lowercase;
    margin-left: 0.5em;
    font-size: 0.7em;
    background: @history-file-badge-bg;
    color: @history-file-badge-color;
    border-radius: 8px;
    line-height: 1;
    padding: 2px 4px 3px;
    margin-top: 2px;
  }

  .history-react-toolbar {
    display: flex;
    align-items: center;

    .history-react-toolbar-file-info {
      flex: 1;
      text-align: right;
    }

    .history-react-toolbar-time {
      font-weight: 700;
    }

    .history-react-toolbar-restore-file-button {
      margin-left: 5px;
    }
  }

  .history-paywall-prompt {
    padding: @history-change-list-padding;

    .history-feature-list {
      list-style: none;
      padding-left: 8px;

      li {
        margin-bottom: 16px;
      }
    }

    button {
      width: 100%;
    }
  }

  .history-version-faded .history-version-details {
    max-height: 6em;
    .mask-image(linear-gradient(black 35%, transparent));
    overflow: hidden;
  }

  .history-paywall-heading {
    .premium-text;
    font-family: inherit;
    font-size: 20px;
    font-weight: 700;
  }
}

.history-version-label-tooltip {
  padding: 6px;
  text-align: initial;

  &-row {
    margin-bottom: 6.25px;

    &:last-child {
      margin-bottom: initial;
    }
  }
}

.history-version-dropdown-menu {
  [role='menuitem'] {
    padding: 10px 12px;
    color: @neutral-90;

    &:hover,
    &:focus {
      color: @neutral-90;
      background-color: @neutral-10;
    }
  }
}

.document-diff-container {
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;

  .cm-viewer-container,
  .cm-editor {
    height: 100%;
  }

  .previous-highlight-button,
  .next-highlight-button {
    position: absolute;
    right: 16px;
  }

  .previous-highlight-button {
    top: 16px;
  }

  .next-highlight-button {
    bottom: 16px;
  }
}

.history-file-tree {
  display: flex !important; // To work around jQuery layout's inline styles
  flex-direction: column;
  flex-grow: 1;
  max-height: 100%;

  ul.history-file-tree-list {
    margin: 0;
    overflow-x: hidden;
    height: 100%;
    flex-grow: 1;
    position: relative;
    overflow-y: auto;

    .history-file-tree-item > ul,
    ul[role='tree'] {
      margin-left: 22px;
    }

    li.bottom-buffer {
      min-height: @line-height-computed;
    }

    li {
      line-height: @file-tree-line-height;
      position: relative;

      &:focus {
        outline: none;
      }

      .history-file-tree-item {
        color: @file-tree-item-color;
        cursor: pointer;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: clip;
        user-select: none;

        &:focus {
          outline: none;
        }

        &:hover {
          background-color: @file-tree-item-hover-bg;

          // When the entity is a subfolder, the DOM element is "indented" via margin-left. This makes the
          // element not fill the entire file-tree width (as it's spaced from the left-hand side via margin)
          // and, in consequence, the background gets clipped. The ::before pseudo-selector is used to fill
          // the empty space.
          .fake-full-width-bg(@file-tree-item-hover-bg);
        }

        .history-file-tree-folder-button,
        .history-file-tree-item-button {
          .reset-button;

          &:focus {
            outline: none;
          }
        }

        .history-file-tree-item-button {
          width: 100%;
          overflow: hidden;
          text-overflow: ellipsis;
          text-align: left;
          padding-right: 40px;
          font-weight: normal;
          display: inline-flex;
          flex-direction: row;
          align-items: center;
          justify-content: space-between;

          .history-file-tree-item-button-text {
            display: inline-flex;
            margin-right: 5px;

            &.strikethrough {
              text-decoration: line-through;
            }
          }

          .history-file-tree-item-button-badge {
            text-transform: capitalize;

            &:hover {
              background-color: @neutral-20;
            }
          }
        }
      }

      i.fa {
        color: @file-tree-item-icon-color;
        font-size: 14px;

        &.file-tree-icon {
          margin-right: 4px;
          margin-left: 8px;
        }

        &.file-tree-folder-icon {
          margin-right: 4px;
        }

        &.file-tree-expand-icon {
          margin-left: 8px;
        }
      }

      i.fa-folder-open,
      i.fa-folder {
        color: @file-tree-item-folder-color;
        font-size: 14px;
      }
    }

    li.selected > .history-file-tree-item {
      color: @file-tree-item-selected-color;
      background-color: @file-tree-item-selected-bg;
      font-weight: bold;

      > div > i.fa,
      > button > i.fa,
      > i.fa {
        color: @file-tree-item-selected-color;
      }

      .fake-full-width-bg(@file-tree-item-selected-bg);
    }
  }
}

.history-error {
  padding: 16px;
}