.Conversation {
  z-index: 1;

  &.-hidden {
    background: var(--__panel-background);
    backdrop-filter: var(--__panel-backdrop-filter);
  }

  .conversation-dive-to-top-level-box {
    padding: var(--status-margin);
    border-bottom: 1px solid var(--border);
    border-radius: 0;

    /* Make the button stretch along the whole row */
    display: flex;
    align-items: stretch;
    flex-direction: column;
  }

  .thread-ancestors {
    margin-left: var(--status-margin);
    border-left: 2px solid var(--border);
  }

  .thread-ancestor.-faded .RichContent {
    /* stylelint-disable declaration-no-important */
    --text: var(--textFaint) !important;
    --link: var(--linkFaint) !important;
    --funtextGreentext: var(--funtextGreentextFaint) !important;
    --funtextCyantext: var(--funtextCyantextFaint) !important;
    /* stylelint-enable declaration-no-important */
  }

  .thread-ancestor-dive-box {
    padding-left: var(--status-margin);
    border-bottom: 1px solid var(--border);
    border-radius: 0;

    /* Make the button stretch along the whole row */
    &,
    &-inner {
      display: flex;
      align-items: stretch;
      flex-direction: column;
    }
  }

  .thread-ancestor-dive-box-inner {
    padding: var(--status-margin);
  }

  .conversation-status {
    border-bottom: 1px solid var(--border);
    border-radius: 0;
  }

  .thread-ancestor-has-other-replies .conversation-status,
  &:last-child:not(.-expanded) .conversation-status,
  &.-expanded .conversation-status:last-child,
  .thread-ancestor:last-child .conversation-status,
  .thread-ancestor:last-child .thread-ancestor-dive-box,
  &.-expanded .thread-tree .conversation-status {
    border-bottom: none;
  }

  .thread-ancestors + .thread-tree > .conversation-status {
    border-top: 1px solid var(--border);
  }

  /* expanded conversation in timeline */
  &.status-fadein.-expanded .thread-body {
    border-left: 4px solid var(--cRed);
    border-radius: var(--roundness);
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    border-bottom: 1px solid var(--border);
  }

  &.-expanded.status-fadein {
    --___margin: calc(var(--status-margin) / 2);

    background: var(--background);
    margin: var(--___margin);

    &::before {
      z-index: -1;
      content: "";
      display: block;
      position: absolute;
      inset: calc(var(--___margin) * -1);
      background: var(--background);
      backdrop-filter: var(--__panel-backdrop-filter);
    }
  }

  .auto-reply-to-section {
    margin: 0 1em;
    gap: 0.5em;

    h4 {
      margin: 0.5em 0;
      line-height: 1.1;

      button {
        line-height: 1.1;
      }
    }

    .reply-to-preview {
      display: flex;
      align-items: center;
      gap: 0.5em;
      border: 1px solid var(--border);
      border-radius: var(--roundness);
      padding: 0.5em;
    }
  }

  .chat-view-reply-form {
    position: sticky;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    bottom: 0;
    padding-left: 0;
    padding-right: 0;
    padding-bottom: 0;
  }
}