discourse/app/assets/stylesheets/common/base/search-menu.scss

@mixin user-item-flex {
  display: flex;
  flex-direction: column;
  line-height: $line-height-medium;
  color: var(--primary-high-or-secondary-low);
}

@mixin separator {
  border-top: 1px solid var(--primary-low);
  margin-top: 0.5em;
  padding-top: 0.5em;
}

$search-pad-vertical: 0.25em;
$search-pad-horizontal: 0.5em;

.search-menu {
  .menu-panel .panel-body-contents {
    overflow-y: auto;
  }

  .search-input {
    position: relative;
    margin: 1px;
    display: flex;
    align-items: center;
    border: 1px solid var(--primary-medium);
    input#search-term {
      border-width: 0;
      margin-bottom: 0;
      &:focus {
        outline: none;
      }
    }

    .btn {
      margin-left: 1px;
    }
    &:focus-within {
      @include default-focus;
    }
  }

  .heading {
    padding: 5px 0 5px 5px;
    .filter {
      padding: 0 5px;
    }
  }

  input[type="text"] {
    margin-right: 0px;
  }

  .results {
    display: flex;
    flex-direction: column;
    padding-top: $search-pad-vertical;
    padding-bottom: $search-pad-vertical;

    .list {
      min-width: 100px;

      .item {
        .blurb {
          // https://css-tricks.com/snippets/css/prevent-long-urls-from-breaking-out-of-container/
          overflow-wrap: break-word;
          word-wrap: break-word;
          -ms-word-break: break-all;
          word-break: break-all;
          word-break: break-word;
          -ms-hyphens: auto;
          -moz-hyphens: auto;
          -webkit-hyphens: auto;
          hyphens: auto;
          margin-top: 0.25em;
        }
      }
    }

    .search-result-topic {
      .first-line {
        display: block;
        line-height: $line-height-medium;
      }

      .second-line {
        display: flex;
        flex-wrap: wrap;
        align-items: baseline;

        .badge-wrapper {
          margin-right: 0.5em;
        }
        .discourse-tags .discourse-tag {
          margin-right: 0.25em;

          .d-icon {
            margin-right: 0;
          }
        }
      }
    }

    .search-result-post {
      .blurb {
        font-size: var(--font-down-1);
      }
    }

    .search-result-category {
      .widget-link {
        margin-bottom: 0;
      }
    }

    .search-result-group .group-result,
    .search-result-user .user-result {
      display: flex;
      align-items: center;
      font-size: var(--font-down-1);
    }
    .search-result-group .group-result {
      .d-icon,
      .avatar-flair {
        width: 20px;
        height: 20px;
      }

      .avatar-flair,
      .d-icon-users {
        margin-right: 0.5em;
      }

      .avatar-flair {
        border-radius: 50%;
        &.avatar-flair-image {
          background-repeat: no-repeat;
          background-size: 100% 100%;
        }
        .d-icon {
          margin-right: 0;
        }
      }

      .group-names {
        @include user-item-flex;
        .name,
        .slug {
          @include ellipsis;
        }

        .name {
          font-weight: 700;
        }
      }
    }

    .search-result-user .user-result {
      .user-titles {
        @include user-item-flex;

        .username,
        .name {
          @include ellipsis;
        }

        .name {
          font-weight: 700;
        }

        .username,
        .name,
        .custom-field {
          color: var(--primary-high-or-secondary-low);
        }

        .custom-field {
          font-size: var(--font-down-2);
        }
      }
    }

    .search-result-category,
    .search-result-tag {
      + .search-result-user,
      + .search-result-group {
        @include separator;
      }
    }

    .search-result-user .user-result img.avatar,
    .search-item-user img.avatar {
      width: 20px;
      height: 20px;
      margin-right: 5px;
    }

    .label-suffix {
      color: var(--primary-medium);
    }

    .extra-hint {
      color: var(--primary-low-mid);
      font-size: var(--font-down-1);
      float: right;
      margin-top: 2px;
    }

    .search-item-slug .badge-wrapper {
      font-size: var(--font-0);
      margin-left: 2px;
    }

    .search-menu-initial-options {
      + .search-result-tag,
      + .search-result-category,
      + .search-result-user,
      + .search-result-group {
        @include separator;
      }
    }

    .search-menu-initial-options,
    .search-result-tag,
    .search-menu-assistant {
      .search-link {
        .d-icon {
          margin-right: 5px;
          vertical-align: middle;
        }
        .d-icon-tag {
          font-size: var(--font-down-2);
        }

        .d-icon-search {
          font-size: var(--font-down-1);
        }
      }
    }

    .search-random-quick-tip {
      padding: $search-pad-vertical $search-pad-horizontal;
      padding-bottom: 0;
      font-size: var(--font-down-2);
      color: var(--primary-medium);
      .tip-label {
        background-color: rgba(var(--tertiary-rgb), 0.1);
        margin-right: 4px;
        padding: 2px 4px;
        display: inline-block;
        &.tip-clickable {
          cursor: pointer;
        }
      }
    }
  }

  .searching {
    position: absolute;
    top: $search-pad-vertical + 0.2em;
    right: $search-pad-horizontal;
    min-height: 20px;

    .spinner {
      width: 12px;
      height: 12px;
      border-width: 2px;
      margin: 0;
      margin-top: 2px;
    }

    a.show-advanced-search,
    a.clear-search {
      padding: 0px 3px;
      display: inline-block;
      background-color: transparent;
      .d-icon {
        color: var(--primary-low-mid);
      }
      &:hover .d-icon {
        color: var(--primary-high);
      }
    }

    a.clear-search {
      margin-right: 3px;
    }
  }

  .no-results {
    padding: $search-pad-vertical $search-pad-horizontal;
  }

  .search-link {
    display: block;
    padding: $search-pad-vertical $search-pad-horizontal;

    // This is purposefully redundant
    // the search widget can be used outside of the header
    // and the focus/hover styles from the header in those cases wouldn't follow
    &:focus,
    &:hover {
      background-color: var(--highlight-medium);
    }

    .topic {
      display: block;
    }

    .topic-title {
      color: var(--tertiary);
      overflow-wrap: anywhere;
      @supports not (overflow-wrap: anywhere) {
        word-break: break-word;
      }
      margin-right: 0.25em;
    }
  }
  .search-result-topic,
  .search-result-post {
    .search-link {
      padding: 0.5em;
    }
  }
}