Chatwoot/app/javascript/dashboard/assets/scss/widgets/_conversation-card.scss

@keyframes left-shift-animation {
  0%,
  100% {
    transform: translateX(0);
  }

  50% {
    transform: translateX(1px);
  }
}

.conversation {
  @include flex;
  @include flex-shrink;
  border-bottom: 1px solid transparent;
  border-left: $space-micro solid transparent;
  border-top: 1px solid transparent;
  cursor: pointer;
  padding: 0 0 0 $space-normal;
  position: relative;

  &.active {
    animation: left-shift-animation 0.25s $swift-ease-out-function;
    background: $color-background;
    border-bottom-color: $color-border-light;
    border-left-color: $color-woot;
    border-top-color: $color-border-light;

    .conversation--details {
      border-top-color: transparent;
    }

    + .conversation .conversation--details {
      border-top-color: transparent;
    }
  }

  &:first-child {
    .conversation--details {
      border-top-color: transparent;
    }
  }

  &:last-child {
    .conversation--details {
      border-bottom-color: $color-border-light;
    }
  }

  .conversation--details {
    @include border-light-bottom;
    @include border-light-top;
    border-bottom-color: transparent;
    margin: 0 0 0 $space-one;
    padding: $space-slab 0;
  }

  .conversation--user {
    font-size: $font-size-small;
    margin-bottom: 0;
    text-transform: capitalize;

    .label {
      left: $space-micro;
      max-width: $space-jumbo;
      overflow: hidden;
      position: relative;
      text-overflow: ellipsis;
      top: $space-micro;
      white-space: nowrap;
    }
  }

  .conversation--message {
    color: $color-body;
    font-size: $font-size-small;
    font-weight: $font-weight-normal;
    height: $space-medium;
    line-height: $space-medium;
    margin: 0;
    max-width: 96%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    width: 27rem;
  }

  .conversation--meta {
    @include flex;
    flex-direction: column;
    position: absolute;
    right: $space-normal;
    top: $space-normal;

    .unread {
      $unread-size: $space-normal;
      @include round-corner;
      @include light-shadow;
      background: darken($success-color, 3%);
      color: $color-white;
      display: none;
      font-size: $font-size-micro;
      font-weight: $font-weight-black;
      height: $unread-size;
      line-height: $unread-size;
      margin-left: auto;
      margin-top: $space-smaller;
      min-width: $unread-size;
      padding: 0 $space-smaller;
      text-align: center;
    }

    .timestamp {
      color: $dark-gray;
      font-size: $font-size-micro;
      font-weight: $font-weight-normal;
      line-height: $space-normal;
      margin-left: auto;
    }
  }

  &.unread-chat {
    .unread {
      display: inline-block;
    }

    .conversation--message {
      font-weight: $font-weight-bold;
    }

    .conversation--user {
      font-weight: $font-weight-bold;
    }
  }

  &.compact {
    padding-left: 0;

    .conversation--details {
      border-radius: var(--border-radius-small);
      margin-left: 0;
      padding-left: var(--space-two);
      padding-right: var(--space-small);
    }
  }
}