discourse/app/assets/stylesheets/admin/admin_config_area.scss

.admin-config-area-card {
  padding: var(--space-4);
  border: 1px solid var(--content-border-color);
  border-radius: var(--d-border-radius);
  background-color: var(--secondary);
  min-width: 0;

  &__label-optional {
    color: var(--primary-medium);
    font-size: var(--font-down-1);
    margin-left: 5px;
  }

  &__additional-help {
    color: var(--primary-medium);
    font-size: var(--font-down-1);
  }

  &__warning-banner {
    color: var(--primary-high);
    background-color: var(--danger-low);
    font-size: var(--font-down-1);
    padding: 10px 10px;
  }

  &__control-group-horizontal {
    display: flex;
    margin-bottom: 18px;

    label {
      margin-right: 1em;
    }
  }

  &__title {
    flex: 2;
    margin-bottom: 0;
  }

  &__header-wrapper {
    display: flex;
    align-items: center;
    flex: 1;
  }

  &__content {
    margin-top: 0.5rem;
  }
}

.admin-config-page {
  &__main-area {
    .admin-detail {
      padding-top: 15px;
      border-left: 0;
      padding-left: 0;
      width: 100%;
    }
  }
}

.admin-config-area {
  display: flex;
  flex-wrap: nowrap;
  gap: var(--space-4);
  align-items: flex-start;

  @media (max-width: $mobile-breakpoint) {
    flex-direction: column;
  }

  &__full-width {
    flex: 1 0 100%;
  }

  &__primary-content {
    flex: 0 1 100%;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    max-width: var(--admin-content-max-width);
  }

  &__aside {
    /* use for help inset */
    flex: 0 1 20%;
    padding: var(--space-2);

    @media (max-width: $mobile-breakpoint) {
      flex: 0 1 auto;
    }
  }

  &__settings {
    .setting-label {
      margin-left: 18px;
    }
  }

  .btn-back {
    margin-bottom: 1em;
  }
}

.admin-site-settings-filter-controls {
  background: var(--primary-very-low);
  margin-bottom: 1em;

  .controls,
  .search.controls {
    background: var(--primary-very-low);
  }
}

.admin-config-area-empty-list,
.admin-empty-list {
  padding: 1em;
  border: 1px solid var(--content-border-color);
  border-radius: var(--d-border-radius);

  &__cta-button {
    display: flex;
    margin-top: 1em;
  }
}

.admin-config-area-card-section {
  display: flex;
  flex-wrap: nowrap;
  gap: var(--space-4);
  flex-direction: column;
  width: calc(100% - 1em);
  border: 1px solid var(--content-border-color);
  padding: 0.5em;

  @media (max-width: $mobile-breakpoint) {
    flex-direction: column;
  }

  &__header-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;

    &.collapsable {
      cursor: pointer;
    }
  }

  &__title {
    margin-bottom: 0;
  }

  &__content {
    margin-top: 0.5rem;
    padding-right: 1em;
    padding-bottom: 1em;
    gap: 1.5em;
    display: flex;
    flex-direction: column;
  }
}

.admin-logo-form {
  .form-kit__section {
    .form-kit__container {
      padding: 1em;
      width: calc(100% - 2em) !important;
      border: 1px solid var(--content-border-color);
    }
  }

  #control-logo_dark .image-uploader.has-image .uploaded-image-preview {
    background-color: #333;
    background-clip: border-box;
  }

  .form-kit__field-toggle .form-kit__container-content.--full {
    // avoid label wrapping
    width: var(--form-kit-small-input) !important;
  }
}

.admin-fonts-form {
  &__more {
    font-size: var(--font-down-1-rem);
  }

  .form-kit__field-custom {
    width: 100% !important;

    .form-kit__control-custom {
      display: flex;
      flex-wrap: wrap;
      flex-direction: row;
      justify-content: space-between;

      .admin-fonts-form__button-option {
        border: 1px solid var(--content-border-color);
        font-size: var(--font-down-1-rem);
        max-height: 4em;
        height: 50px;
        margin-bottom: 1em;
        padding: 0 0.65em;

        &:hover {
          border-color: var(--primary-low-mid);
        }

        &.active {
          position: relative;
          border: 2px solid var(--tertiary);

          &::after {
            position: absolute;
            top: 35%;
            left: 0.5rem;
            font-family: "Segoe UI", Arial, sans-serif;
            content: "\2714"; // ✔
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 1rem;
            height: 1rem;
            background-color: var(--tertiary);
            color: var(--secondary);
            border-radius: 9999px;
            font-size: 0.5rem;
            margin-left: 0.25rem;
          }

          &:hover {
            border-color: var(--tertiary);
          }
        }

        &.font {
          flex: 0 0 32%;
          max-width: 32%;

          @media (max-width: $mobile-breakpoint) {
            flex: 0 0 100%;
            max-width: 100%;
          }
        }

        &.text-size {
          flex: 0 0 19%;
          max-width: 19%;

          // px must be used because there is different font size inside each button
          height: 45px;

          @media (max-width: $mobile-breakpoint) {
            flex: 0 0 100%;
            max-width: 100%;
          }

          &.smallest {
            font-size: var(--base-font-size-smallest);
          }

          &.smaller {
            font-size: var(--base-font-size-smaller);
          }

          &.normal {
            font-size: var(--base-font-size-normal);
          }

          &.larger {
            font-size: var(--base-font-size-larger);
          }

          &.largest {
            font-size: var(--base-font-size-largest);
          }
        }
      }
    }
  }
}