plugins/CoreHome/stylesheets/selector.less

@_selector-button_padding: 8px 16px;
@_selector-button_inner-half-gap: 8px;
@_selector-button_color-background: @theme-color-background-contrast;
@_selector-button_color-background-hover: @theme-color-background-contrast;
@_selector-button_border: 1px solid @theme-color-border;
@_selector-button_border-active: 1px solid @theme-color-link;
@_selector-button_border-radius: 8px;
@_selector-button_box-shadow: none;

@_selector-dropdown_color-background: @theme-color-background-contrast;
@_selector-dropdown_border: 1px solid @theme-color-border;
@_selector-dropdown_border-radius: 8px;
@_selector-dropdown_padding: 16px;
@_selector-dropdown_box-shadow: ~"0 0 3px #A5B1CA4D, 0 10px 40px #A5B1CA4D";
@_selector-dropdown_box-shadow-dark: ~"0 0 3px #00000080, 0 10px 40px #00000080";
@_selector-dropdown_margin-top: 8px;

.piwikSelector:not(.quick-access) {
  position: relative;
  display: inline-flex;
  border: @_selector-button_border;
  border-radius: @_selector-button_border-radius;
  box-shadow: @_selector-button_box-shadow;

  span.title,
  a.title,
  button.title {
    flex: auto;

    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: @_selector-button_padding;
    background-color: @_selector-button_color-background;
    border: none;
    border-radius: @_selector-button_border-radius;

    .font-default(14px, 20px);
    white-space: nowrap;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    color: @theme-color-text;
    font-variant: tabular-nums;

    &:focus {
      outline: none;
    }

    &.activityIndicator {
      background: url(plugins/Morpheus/images/loading-blue.gif) no-repeat 9px 9px;

      .icon {
        visibility: hidden;
      }
    }

    .icon {
      // remove relative: [class^="icon-"], [class*=" icon-"]{line-height:1em}
      font-size: inherit;
      line-height: inherit;

      &.iconHidden {
        visibility: hidden;
      }
    }

    .icon:not(.icon-fixed) {
      float: right;

      &::after {
        clear: left;
        content: ' ';
      }
    }
  }

  &.expanded,
  &.editing,
  &:hover:not(.periodSelector-withPrevNext),
  &:focus:not(.periodSelector-withPrevNext),
  &:focus-within:not(.periodSelector-withPrevNext) {
    border: @_selector-button_border-active;

    span.title,
    a.title,
    button.title {
      text-decoration: none;
      background: @_selector-button_color-background-hover;
    }
  }

  /* Period selector specific: left & right arrows */

  .move-period {
    position: relative;
    padding: @_selector-button_padding;
    background-color: @_selector-button_color-background;

    &::before {
      content: '';
      position: absolute;
      inset: -1px;
      border: 1px solid transparent;

      pointer-events: none;
    }

    &:hover::before,
    &:focus-visible::before {
      border-color: @theme-color-focus-ring;
    }
  }

  .move-period-prev {
    padding-right: @_selector-button_inner-half-gap;
    border-radius: @_selector-button_border-radius 0 0 @_selector-button_border-radius;

    &::before {
      border-radius: @_selector-button_border-radius 0 0 @_selector-button_border-radius;
    }
  }

  .move-period-next {
    padding-left: @_selector-button_inner-half-gap;
    border-radius: 0 @_selector-button_border-radius @_selector-button_border-radius 0;

    &::before {
      border-radius: 0 @_selector-button_border-radius @_selector-button_border-radius 0;
    }
  }

  &.periodSelector-withPrevNext .title {
    border-radius: 0;
    padding-left: @_selector-button_inner-half-gap;
    padding-right: @_selector-button_inner-half-gap;

    &::before {
      content: '';
      position: absolute;
      inset: -1px;
      border: 1px solid transparent;
      border-radius: @_selector-button_border-radius;

      pointer-events: none;
    }

    &:hover::before,
    &:focus-visible::before {
      border-color: @theme-color-focus-ring;
    }
  }
}

/* Dropdown */
.piwikSelector {
  .dropdown {
    .font-default(14px, 20px);
    display: none;
  }

  &.expanded {
    .dropdown {
      display: block; /* to revert display: none */

      position: absolute;
      z-index: 999;
      top: 100%;
      margin-top: @_selector-dropdown_margin-top;
      left: -1px;

      border: @_selector-dropdown_border;
      border-radius: @_selector-dropdown_border-radius;
      padding: @_selector-dropdown_padding;
      box-shadow: @_selector-dropdown_box-shadow;

      overflow: hidden;

      .inDarkMode({
        box-shadow: @_selector-dropdown_box-shadow-dark;
      });
    }
  }

  &.expanded .dropdown,
  &:hover .dropdown,
  &.active .dropdown {
    background-color: @_selector-dropdown_color-background;
  }
}