: calc(-1 * (var(--panel-shadow-margin) + var(--panel-padding-block) + 1px));
  }
}

/* Rules for popups associated with menulists */
menulist > menupopup {
  min-width: 0;
  font: inherit;

  @media (-moz-platform: macos) {
    color: FieldText;

    &:not([position]) {
      margin-inline-start: -13px;
      margin-top: -1px;
    }
  }

  > menuitem,
  > menucaption,
  > menu {
    max-width: none;

    @media (-moz-platform: windows) {
      > label {
        padding-block: 0;
      }
    }
  }

  @media (-moz-platform: windows) {
    > menuitem[_moz-menuactive][disabled="true"] {
      color: GrayText;
    }
  }
}

/* Menu separator */

menuseparator {
  /* Using padding instead of margin to increase the hit area, as some
     separators (e.g. in bookmarks menus) can be dragged or have a context
     menu. */
  padding-block: 4px;

  @media (-moz-platform: macos) {
    padding-block: 5px;
    margin-inline: 9px;
  }

  @media (-moz-platform: windows) {
    /* The side padding should align with the start of the menu item text. */
    padding-inline: 1em;
  }

  &::before {
    border-top: 1px solid var(--panel-separator-color);
    content: "";
    display: block;
    flex: 1;
  }
}

/* Scroll buttons */

/* Hide arrow buttons when there's nothing to scroll in that direction */
.menupopup-arrowscrollbox[scrolledtostart]::part(scrollbutton-up),
.menupopup-arrowscrollbox[scrolledtoend]::part(scrollbutton-down) {
  display: none;
}

/* Prevent the scrolled contents of the menupopup from jumping vertically when
 * the arrow buttons appear / disappear, by positioning ::part(scrollbox) in
 * such a way that its edges are at the same position as the edges of
 * arrowscrollbox regardless of scroll button visibility.
 */
.menupopup-arrowscrollbox:not([scrolledtostart])::part(scrollbox) {
  /* scrollbutton-up is visible; shift our top edge up by its height. */
  margin-top: -16px;
  border-top: 16px solid transparent;
}

.menupopup-arrowscrollbox:not([scrolledtoend])::part(scrollbox) {
  /* scrollbutton-down is visible; shift our bottom edge down by its height. */
  margin-bottom: -16px;
  border-bottom: 16px solid transparent;
}

menubar {
  font: menu;
}

menubar > menu {
  @media (-moz-platform: linux) {
    color: inherit;
    background-color: transparent;
    border-radius: 0;
    padding: 0.25em 0.5em;
    padding-bottom: 1px;
    border-bottom: 3px solid transparent;

    &[open] {
      border-bottom-color: AccentColor;
    }
  }

  @media (-moz-platform: macos) {
    padding-block: 2px;
    padding-inline: 7px 5px;
    margin: 1px 0;
  }

  @media (-moz-platform: windows) {
    padding: 1px 6px 2px;

    &:-moz-window-inactive {
      color: ThreeDShadow;
    }

    &:not([disabled="true"]) {
      color: inherit;
    }
    &[_moz-menuactive]:not([disabled="true"]) {
      color: -moz-menubarhovertext;

      *|*:root[lwtheme] & {
        /* FIXME: This feels out of place, maybe we can just use the lwtheme
         * rules everywhere? */
        background-color: SelectedItem;
        color: SelectedItemText;
        text-shadow: none;
      }
    }
  }

  > .menu-text {
    margin: 0;
  }
}

menu,
menuitem,
menucaption {
  border-radius: var(--menuitem-border-radius);
  padding: var(--menuitem-padding);
  margin: var(--menuitem-margin);
  align-items: center;
  flex-shrink: 0;
  list-style-image: none;
  max-width: var(--menuitem-max-width);
  /* Prevents the icon from being inherited to submenus. */
  --menuitem-icon: normal;
}

menu,
menuitem {
  &:where([disabled="true"]) {
    color: var(--text-color-disabled);
    text-shadow: none;
  }

  &:where([_moz-menuactive]:not([disabled="true"])) {
    color: -moz-menuhovertext;
    background-color: -moz-menuhover;
  }

  &:where([_moz-menuactive][disabled="true"]) {
    background-color: -moz-menuhoverdisabled;
  }
}

menuitem:is([default="true"], .spell-suggestion),
menucaption {
  font-weight: var(--font-weight-bold);
}

.menu-icon,
.menu-text,
.menu-highlightable-text,
.menu-accel {
  pointer-events: none;
}

/* ..... menu arrow box ..... */

menupopup > menu::after {
  content: "";
  display: block;
  width: var(--menu-arrow-size);
  height: var(--menu-arrow-size);
  background-image: url("chrome://global/skin/icons/arrow-right.svg");
  background-size: var(--menu-arrow-size);

  -moz-context-properties: fill, fill-opacity;
  fill: currentColor;
  fill-opacity: var(--menu-arrow-opacity);

  margin-inline: 1em 0;
  @media (-moz-platform: linux) {
    margin-inline: 0.5em 0;
  }
  @media (-moz-platform: macos) {
    margin-inline: 22px -3px;
  }
}

menupopup > menu:-moz-locale-dir(rtl)::after {
  background-image: url("chrome://global/skin/icons/arrow-left.svg");
}

.menu-text,
.menu-accel {
  margin: 0;
  @media (-moz-platform: windows) {
    padding: 1px 0;
  }
  @media (-moz-platform: linux) {
    margin-inline: 0 2px;
  }
}

/* Accel text */

.menu-accel {
  margin-inline: 0.74em 0.35em;
  @media (-moz-platform: macos) {
    margin-inline: 25px 0;
  }
  @media (-moz-platform: linux) {
    /* Matches the margin-inline-end on iconic-left */
    margin-inline: 0.5em 0;
  }

  @media not (prefers-contrast) {
    menuitem:not([disabled]) > & {
      color: var(--text-color-disabled);
    }
  }

  :is(menu, menuitem):not([acceltext]) > & {
    display: none;
  }
}

menuitem:not([highlightable]) > .menu-highlightable-text,
menuitem[highlightable] > .menu-text {
  display: none;
}

.menu-highlightable-text,
.menu-text {
  flex: 1;
}

.menu-icon {
  width: 16px;
  height: 16px;
  box-sizing: border-box;

  /* Empty icons shouldn't take up any space */
  display: none;
  /* This avoids showing the broken image border for non-iconic items when
   * adding a gutter */
  visibility: hidden;

  @media (-moz-platform: linux) {
    /* Matches inline menuitem padding */
    margin-inline-end: 0.5em;
  }
  @media (-moz-platform: windows) {
    margin-top: 2px;
    margin-inline-end: 8px;
  }
  @media (-moz-platform: macos) {
    margin-block: -2px;
    margin-inline-end: 6px;
  }

  menuitem:where(.menuitem-iconic, [image]) > &,
  menu:where(.menu-iconic) > & {
    &:where(:not([srcset])) {
      content: var(--menuitem-icon);
    }
    display: revert;
    visibility: inherit;
  }
}

/* checkbox / radio rendering */

/* On linux, we use regular checkboxes and radio buttons */
@media (-moz-platform: linux) {
  menuitem:is([type="checkbox"], [checked="true"]) > .menu-icon {
    visibility: inherit;
    appearance: auto;
    -moz-default-appearance: checkbox;
  }

  menuitem[type="radio"] > .menu-icon {
    visibility: inherit;
    appearance: auto;
    -moz-default-appearance: radio;
  }
}

/* On windows we use a checkmark */
@media (-moz-platform: windows) {
  /* We need to do something to override the default style for selected
     checkboxes and radio buttons because the native drawing we use on other
     Windows versions looks pretty bad with the Win10 styles, so for now we'll
     insert a generic checkmark icon for both types. */
  menuitem[checked="true"] > .menu-icon {
    visibility: inherit;
    -moz-context-properties: fill, fill-opacity;
    fill: currentColor;
    fill-opacity: var(--menu-arrow-opacity);
    content: url("chrome://global/skin/icons/menu-check.svg");
  }
}

menupopup[needsgutter] {
  @media (-moz-platform: linux) or (-moz-platform: windows) {
    > :is(menu, menuitem) > .menu-icon {
      display: revert;
    }
  }

  @media (-moz-platform: macos) {
    /* although only menuitems may be checked, apply this to
       menus and menucaptions as well to maintain alignment */
    > menu,
    > menuitem,
    > menucaption {
      padding-inline-start: 0;

      &::before {
        content: "\2713"; /* a checkmark */
        display: inline-block;
        vertical-align: middle;
        line-height: 0;
        visibility: hidden;
        padding-inline: 4px;
        font-weight: var(--font-weight-bold);
      }
    }

    > menuitem:is([checked="true"], [selected="true"])::before {
      visibility: inherit;
    }
  }
}

menuitem[badge]::after {
  border-radius: var(--border-radius-small);
  border: 1px solid var(--badge-border-color);
  color: var(--badge-text-color);
  background-color: var(--badge-background-color);
  content: attr(badge);
  margin-inline-start: var(--space-small);
  padding: var(--space-xxsmall) var(--space-small);
}

menuitem.badge-new::after {
  border-color: var(--badge-filled-border-color);
  color: var(--badge-filled-text-color);
  background-color: var(--badge-filled-background-color);
}
PK