discourse/app/assets/stylesheets/common/base/sidebar-section-link.scss

:root {
  --d-sidebar-section-link-prefix-margin-right: 0.4rem;
  --d-sidebar-section-link-prefix-width: 20px;
}

.sidebar-section-link-wrapper {
  display: flex;
  align-items: center;
  position: relative;

  .sidebar-section-link {
    display: inline-flex;
    width: 100%;
    align-items: center;
    color: var(--primary-high);
    transition: background-color 0.25s;

    &:focus,
    &:hover {
      background: var(--d-sidebar-highlight-color);
      outline: none;
    }

    &.active {
      color: var(--primary);
      background: var(--d-sidebar-highlight-color);

      .sidebar-section-link-prefix {
        &.icon {
          color: var(--primary-high);
        }
      }
    }

    .sidebar-section-link-content-badge {
      @include ellipsis;
      padding-left: 0.5em;
      text-align: right;
      color: var(--tertiary);
      font-size: var(--font-down-1);
      font-weight: normal;
      margin-left: auto;
    }

    .sidebar-section-link-suffix {
      margin-left: 0.25rem;
      font-size: var(--font-down-4);
    }

    .sidebar-section-link-content-text {
      @include ellipsis;

      .emoji {
        width: 15px;
        height: 15px;
      }

      .badge-wrapper {
        font-size: 100%;
        width: 100%;

        .category-name {
          white-space: nowrap;
          overflow: hidden;
          text-overflow: ellipsis;
        }
      }
    }
  }

  .sidebar-section-link-personal-messages-sent,
  .sidebar-section-link-personal-messages-new,
  .sidebar-section-link-personal-messages-archive,
  .sidebar-section-link-personal-messages-unread,
  .sidebar-section-link-group-messages-new,
  .sidebar-section-link-group-messages-unread,
  .sidebar-section-link-group-messages-archive {
    .sidebar-section-link-content-text {
      margin-left: calc(
        var(--d-sidebar-section-link-prefix-margin-right) +
          var(--d-sidebar-section-link-prefix-width)
      );
    }
  }

  .sidebar-section-link-review {
    .sidebar-section-link-content-badge {
      color: var(--danger);
    }
  }

  .sidebar-section-link-prefix {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: var(--d-sidebar-section-link-prefix-width);
    height: var(--d-sidebar-section-link-prefix-width);
    margin-right: var(--d-sidebar-section-link-prefix-margin-right);

    &.image {
      img {
        border-radius: 100%;
        aspect-ratio: auto 20 / 20;
        width: calc(var(--d-sidebar-section-link-prefix-width) - 2px);
        height: calc(var(--d-sidebar-section-link-prefix-width) - 2px);
      }
    }

    &.text {
      text-align: center;

      .prefix-text {
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 100%;
        background: rgba(var(--primary-rgb), 0.1);
        width: calc(var(--d-sidebar-section-link-prefix-width) - 2px);
        height: calc(var(--d-sidebar-section-link-prefix-width) - 2px);
      }
    }

    &.icon,
    &.span {
      position: relative;
      color: var(--primary-medium);

      svg {
        font-size: var(--font-down-1);
      }

      .prefix-badge {
        position: absolute;
        background-color: transparent;
        border-radius: 50%;
        padding: 2px 2px 3px;
        color: var(--primary-high);
        height: 0.5rem;
        width: 0.5rem;
        top: -0.2em;
        right: 0;
        margin-right: -0.2em;
      }
    }
    .prefix-span {
      width: 0.9em;
      height: 0.9em;
    }
  }

  .sidebar-section-link-hover {
    margin-left: auto;

    .sidebar-section-hover-button {
      display: none;
      color: var(--primary-medium);
      border: none;
      background: transparent;
      padding: 0 0 0 0.5em;
      height: 100%;
      transition: background-color 0.25s;

      &:focus,
      .discourse-no-touch & {
        &:hover {
          color: var(--primary);
        }
      }

      svg {
        font-size: var(--font-down-1);
      }
    }

    &:hover {
      .sidebar-section-hover-button {
        background: var(--primary-low);
      }
    }
  }

  &:hover {
    .sidebar-section-hover-button {
      display: block;
    }
  }
}