userChrome.css

@media (-moz-proton) {
  /** Darkmode - Color lighter ************************************************/
  :root[style*="--lwt-accent-color:rgb(12, 12, 13); --lwt-text-color:rgba(249, 249, 250);"] {
    --toolbar-bgcolor: rgba(43, 42, 51, 5) !important; /* Original: rgba(43, 42, 51, 1) */
  }

  /** Root - Reduce Padding ***************************************************/
  :root {
    /* Tab Bar */
    --proton-tab-block-margin: 2px !important; /* Original: 4px */
    --inline-tab-padding:      6px !important; /* Original: 8px */

    /* Panel */
    --arrowpanel-menuicon-padding: 8px;
    --arrowpanel-menuitem-margin: 0 var(--arrowpanel-menuicon-padding) !important; /* Original: 0 8px */
    --arrowpanel-menuitem-padding: 5px !important; /* Original: 8px */
    --arrowpanel-padding:        0.8em !important; /* Original: 16px or .cui-widget-panel, .cui-widget-panel::part(arrowcontent) => 4px 0 */
  }

  :root[uidensity=compact] {
    /* Tool Bar */
    --toolbarbutton-outer-padding: 2px !important; /* Original: 3px, General is 2px */

    /* Panel */
    --arrowpanel-menuitem-padding: 3px  !important; /* Original: 8px */
  }

  :root[uidensity=touch] {
    /* Tab Bar - Like Original */
    --proton-tab-block-margin: 4px !important; /* Original: 4px */
    --inline-tab-padding:      8px !important; /* Original: 8px */

    /* Panel - Like Original */
    --arrowpanel-menuitem-padding: 8px  !important; /* Original: 8px */
  }

  /** Tab Bar - Reduce Width, Show more tabs **********************************/
  .titlebar-spacer[type="pre-tabs"] {
    width: 30px !important; /* Original: 40px */
  }
  .titlebar-spacer[type="post-tabs"] {
    width: 25px !important; /* Original: 40px */
  }

  :root {
    --newtab-button-minus-width-padding: 2px;
    --newtab-button-width-padding: calc(var(--toolbarbutton-inner-padding) - var(--newtab-button-minus-width-padding));
  }
  #new-tab-button     > .toolbarbutton-icon,
  #alltabs-button     > .toolbarbutton-badge-stack {
    /* Original: calc(2 * var(--toolbarbutton-inner-padding) + 16px) */
    width: calc(2 * var(--newtab-button-width-padding) + 16px) !important;

    /* Original: --toolbarbutton-inner-padding */
    padding-left:  var(--newtab-button-width-padding) !important;
    padding-right: var(--newtab-button-width-padding) !important;
  }

  :root[uidensity=compact] #tabbrowser-tabs[haspinnedtabs]:not([positionpinnedtabs]) > #tabbrowser-arrowscrollbox > .tabbrowser-tab[first-visible-unpinned-tab] {
    margin-inline-start: 0 !important;
  }

  :root:not([uidensity=touch]) #tabbrowser-arrowscrollbox {
    --scrollbtn-inner-padding: 1px;
    --scrollbtn-outer-padding: 3px;
  }
  #scrollbutton-up {
    padding-left:  var(--scrollbtn-inner-padding, 4px) !important; /* Original: 4px */
    padding-right: var(--scrollbtn-outer-padding, 4px) !important;
  }
  #scrollbutton-down {
    padding-left:  var(--scrollbtn-outer-padding, 4px) !important; /* Original: 4px */
    padding-right: var(--scrollbtn-inner-padding, 4px) !important;
  }

  :root:not([uidensity=touch]) #new-tab-button, #alltabs-button {
    --toolbarbutton-outer-padding: 1px; /* Original: 2px*/
  }

  /* Tab - Max Size */
  .tabbrowser-tab[fadein]:not([pinned]):not([style*="max-width"]) {
    max-width: 240px !important; /* Original: 225px */
  }

  /* neighbouring tabs should "pinch" together */
  .tabbrowser-tab {
    padding-inline: 1px !important;
  }

  .tabbrowser-tab:not([last-visible-tab]) {
    margin-inline-end: -.5px !important;
  }

  /** Tab Bar - Reduce Height, Show more contents *****************************/
  :root:not([uidensity=touch]) #TabsToolbar {
    --toolbarbutton-inner-padding: 9px; /* Original: calc((var(--tab-min-height) - 16px) / 2) = 10px */
  }

  .toolbar-items, .tabbrowser-tab {
    max-height: 38px;
  }
  :root[uidensity=compact] .toolbar-items, .tabbrowser-tab {
    max-height: 36px;
  }
  :root[uidensity=touch] .toolbar-items, .tabbrowser-tab {
    max-height: unset;
  }

  :root:not([uidensity=touch]) #tabbrowser-arrowscrollbox {
    --scrollbtn-vertical-padding: 3px;
  }
  #scrollbutton-up,
  #scrollbutton-down {
    /* Original: var(--toolbarbutton-inner-padding) calc(var(--toolbarbutton-inner-padding) - 6px) = 9px */
    /* https://github.com/mozilla/gecko-dev/blob/71b1259afd1cdaf41871ae675c2dadb967ea5b34/browser/themes/shared/toolbarbuttons.inc.css#L142 */
    padding-top:    var(--scrollbtn-vertical-padding, var(--toolbarbutton-inner-padding)) !important;
    padding-bottom: var(--scrollbtn-vertical-padding, var(--toolbarbutton-inner-padding)) !important;
  }

  :root[tabsintitlebar]:not([uidensity=compact]) #toolbar-menubar[autohide="true"] {
    height: calc(var(--tab-min-height) - var(--tabs-navbar-shadow-size) - 2px); /* Compact: 28px, Normal: 33px, Touch: 38px */
  }

  /* Pinned Tab - Titlechanged Indicator position fix */
  :root:not([uidensity=touch]) .tabbrowser-tab:is([image], [pinned]) > .tab-stack > .tab-content[attention]:not([selected="true"]),
  :root:not([uidensity=touch]) .tabbrowser-tab > .tab-stack > .tab-content[pinned][titlechanged]:not([selected="true"]) {
    /* Original: center bottom calc(6.5px + var(--tabs-navbar-shadow-size)); */
    background-position-y: bottom calc(4.5px + var(--tabs-navbar-shadow-size)) !important;
  }
  :root[uidensity=compact] .tabbrowser-tab:is([image], [pinned]) > .tab-stack > .tab-content[attention]:not([selected="true"]),
  :root[uidensity=compact] .tabbrowser-tab > .tab-stack > .tab-content[pinned][titlechanged]:not([selected="true"]) {
    /* Original: center bottom calc(6.5px + var(--tabs-navbar-shadow-size)); */
    background-position-y: bottom calc(.5px + var(--tabs-navbar-shadow-size)) !important;
  }

  /** Tab Bar - Connect to window *********************************************/
  .tab-background {
    border-radius: var(--tab-border-radius) var(--tab-border-radius) 0px 0px !important;
    margin-bottom: 0px !important;
  }

  .tab-content {
    margin-top: var(--proton-tab-block-margin);
  }

  .tab-stack {
    margin-top:    0px !important;
    margin-bottom: 0px !important;
  }

  /** Selected Tab - Color like toolbar ***************************************/
  #tabbrowser-tabs:not([movingtab]) > #tabbrowser-arrowscrollbox > .tabbrowser-tab > .tab-stack > .tab-background[multiselected="true"]:-moz-lwtheme, #tabbrowser-tabs:not([movingtab]) > #tabbrowser-arrowscrollbox > .tabbrowser-tab > .tab-stack > .tab-background[selected="true"]:-moz-lwtheme {
    /* Original: linear-gradient(var(--lwt-selected-tab-background-color, transparent), var(--lwt-selected-tab-background-color, transparent)), linear-gradient(var(--toolbar-bgcolor), var(--toolbar-bgcolor)), var(--lwt-header-image, none)
 */
    background-image: linear-gradient(var(--toolbar-bgcolor, transparent), var(--toolbar-bgcolor, transparent)), linear-gradient(var(--toolbar-bgcolor), var(--toolbar-bgcolor)), var(--lwt-header-image, none) !important;
  }


  /* Multi Selected Color */
  .tab-background[multiselected="true"]:not([selected="true"]) > .tab-loading-burst.proton:not([bursting]) {
    background: color-mix(in srgb, currentColor 65%, transparent);
    opacity: .3;
  }
  #TabsToolbar[brighttext] .tab-background[multiselected="true"]:not([selected="true"]) > .tab-loading-burst.proton:not([bursting]) {
    opacity: .15;
  }

  /** Selected Tab - Box Shadow ***********************************************/
  #TabsToolbar[brighttext] #tabbrowser-tabs:not([noshadowfortests]) .tabbrowser-tab[visuallyselected="true"] > .tab-stack > .tab-background:-moz-lwtheme {
    /* Origina: 0 0 1px var(--tab-line-color, rgba(128,128,142,0.9))
       Bright: 0 0 1px var(--tab-line-color, rgba(128,128,142,0.9)), 0 0 4px rgba(128,128,142,0.5) */
    box-shadow: 0 0 1px var(--toolbar-color) !important;
  }
  #TabsToolbar[brighttext] #tabbrowser-tabs:not([noshadowfortests]) .tabbrowser-tab[multiselected]:not([visuallyselected]) > .tab-stack > .tab-background:-moz-lwtheme {
    box-shadow: 0 0 1px color-mix(in srgb, var(--toolbar-color) 80%, transparent)  !important;
  }

  /* Pinned Tab - tabbrowser-arrowscrollbox overflowing */
  #tabbrowser-tabs[positionpinnedtabs] > #tabbrowser-arrowscrollbox > .tabbrowser-tab[pinned] {
    z-index: 0 !important;
  }

  /** Selected Tab - Bottom Rounded Corner ************************************/
  #tabbrowser-tabs {
    --tab-corner-rounding: 5px; /* 10px looks about like chromium - 17px looks close to Australis tabs */
    --tab-corner-padding:  1px;
  }

  :root[lwtheme="true"] tab[visuallyselected] > stack::before,
  :root[lwtheme="true"] tab[visuallyselected] > stack::after {
    /* Box */
    content: "" !important;
    display: block !important;
    position: absolute !important;
    z-index: 1 !important;

    /* Shape */
    width:  var(--tab-corner-rounding) !important;
    height: 100% !important;

    /* Color */
    fill:   var(--toolbar-bgcolor) !important;
    stroke: var(--tabs-border-color, transparent) !important;
    -moz-context-properties: fill, stroke !important;

    background-image: url(./icons/tab-bottom-corner.svg);
    background-size:   var(--tab-corner-rounding);
    background-repeat: no-repeat;
    background-position-y: bottom;
  }

  :root[lwtheme="true"] tab[visuallyselected] > stack::before {
    left: calc(var(--tab-corner-padding) - var(--tab-corner-rounding)) !important;
  }
  :root[lwtheme="true"] tab[visuallyselected] > stack::after {
    left:  auto;
    right: calc(var(--tab-corner-padding) - var(--tab-corner-rounding));
    transform: scaleX(-1) !important;
  }

  /** Unselected Tab - Divide line ********************************************/
  #tabbrowser-arrowscrollbox:not([overflowing]) .tabbrowser-tab[first-visible-unpinned-tab] .tab-background::before,
  .tabbrowser-tab:not([visuallyselected], [multiselected], :hover, :first-child) .tab-background::before,
  #tabbrowser-arrowscrollbox:not([overflowing]) .tabbrowser-tab:not([visuallyselected], [multiselected], :hover)[last-visible-tab] .tab-background::after {
    /* Box Model */
    content:  "";
    display:  block;
    position: absolute;
    top:   50%;

    /* Bar shape */
    width:     1px;
    height:   20px;
    overflow: hidden;

    /* Bar Color */
    opacity: var(--tab-separator-opacity);
    transition: opacity .2s var(--ease-basic) !important;
    background-color: color-mix(in srgb, currentColor 20%, transparent) !important; /*  Replace var(--toolbarseparator-color) - Hard coded for compatibility */
  }

  .tab-background::before {
    transform: translateX(-2.5px) translateY(calc(-50% + 1px)) !important;
  }
  .tabbrowser-tab[last-visible-tab] .tab-background::after {
    right: 0;
    transform: translateX(2.5px) translateY(calc(-50% + 1px)) !important;
  }

  .tabbrowser-tab:is([visuallyselected], [multiselected], :hover) + .tabbrowser-tab:not([visuallyselected]) .tab-background::before,
  .tabbrowser-tab[first-visible-unpinned-tab]:is([visuallyselected], [multiselected], :hover) .tab-background::before,
  #tabbrowser-arrowscrollbox[overflowing] tab.tabbrowser-tab[first-visible-unpinned-tab] .tab-background::before {
    opacity: 0 !important;
  }

  /* Latest Tab & New tab margin */
  #tabbrowser-arrowscrollbox:not([overflowing]) .tabbrowser-tab[last-visible-tab] {
    margin-inline-end: 8px !important;
  }

  /** Clipped tabs - Letters cleary *******************************************/
  #tabbrowser-tabs[closebuttons=activetab] .tab-content:not([pinned]) {
    padding-inline-start: 8px !important;
  }

  #tabbrowser-tabs[closebuttons=activetab] .tabbrowser-tab:not([visuallyselected]) .tab-close-button {
    visibility: collapse !important;
  }

  #tabbrowser-tabs[closebuttons=activetab] .tab-label-container[textoverflow][labeldirection="ltr"]:not([pinned]),
  #tabbrowser-tabs[closebuttons=activetab] .tab-label-container[textoverflow]:not([labeldirection]):-moz-locale-dir(ltr):not([pinned]) {
    mask-image: linear-gradient(to right, black 70%, transparent) !important;
  }

  #tabbrowser-tabs[closebuttons=activetab] .tab-label-container[textoverflow][labeldirection="rtl"]:not([pinned]),
  #tabbrowser-tabs[closebuttons=activetab] .tab-label-container[textoverflow]:not([labeldirection]):-moz-locale-dir(rtl):not([pinned]) {
    mask-image: linear-gradient(to left, black 70%, transparent) !important;
  }

  /** Sound Tab - Hide Label **************************************************/
  .tab-secondary-label:is([soundplaying], [muted], [activemedia-blocked], [pictureinpicture]){
    display: none !important;
  }

  /** Sound Tab - Show with Favicons ******************************************/
  /* Makes the favicons always visible (also on hover) */
  .tab-icon-image:not([pinned]){
    opacity: 1 !important
  }

  /* Makes the speaker icon to always appear if the tab is playing (not only on hover) */
  .tab-icon-overlay:not([crashed]),
  .tab-icon-overlay[pinned][crashed][selected] {
    /* Position */
    top: -3.5px !important;
    inset-inline-end: -9px !important;
    z-index: 1 !important;

    /* Shape */
    padding: 1.5px !important;
    border-radius: 10px !important;
    width:  17px !important;
    height: 17px !important;
  }
  .tab-icon-overlay:not([sharing], [crashed]):is([soundplaying], [muted], [activemedia-blocked]) {
    /* Color */
    color:  currentColor !important;
    stroke: transparent !important;
    background: transparent !important;
    fill-opacity: 0.8 !important;
    opacity: 1 !important;
  }
  .tab-icon-overlay:not([pinned], [sharing], [crashed]):is([soundplaying], [muted], [activemedia-blocked]) {
    margin-inline-end: 9.5px !important;
  }

  /* None exist favicon */
  .tabbrowser-tab:not([image]) .tab-icon-overlay:not([pinned], [sharing],[crashed]) {
    top: 0 !important;
    inset-inline-end: 0 !important;
    margin-inline-end: 5.5px !important;
    padding: 2px 0 !important;
  }

  /* Busy - Show */
  .tab-throbber[busy], .tab-icon-pending[busy] {
    opacity: 1 !important;
  }

  /* Busy - Overlay Position */
  .tabbrowser-tab:not([pinned])[busy] .tab-icon-overlay:is([soundplaying], [muted], [activemedia-blocked]) {
    transform: translateX(-.5px) translateY(-2.5px);
  }
  .tabbrowser-tab:not([image]) .tab-icon-overlay:not([pinned], [sharing],[crashed])[busy] {
    top: -3.5px !important;
    inset-inline-end: -9px !important;
    margin-inline-end: 9.5px !important;
    padding: 1.5px !important;
  }

  /* Hover */
  .tab-icon-overlay:not([crashed])[soundplaying]:hover,
  .tab-icon-overlay:not([crashed])[muted]:hover,
  .tab-icon-overlay:not([crashed])[activemedia-blocked]:hover {
    color:  var(--toolbar-bgcolor, white) !important;
    stroke: var(--lwt-tab-text, var(--toolbar-color)) !important;
    background-color: var(--lwt-tab-text, var(--toolbar-color)) !important;
    fill-opacity: 0.95 !important;
  }

  #TabsToolbar[brighttext] .tab-icon-overlay:not([crashed])[soundplaying]:hover,
  #TabsToolbar[brighttext] .tab-icon-overlay:not([crashed])[muted]:hover,
  #TabsToolbar[brighttext] .tab-icon-overlay:not([crashed])[activemedia-blocked]:hover {
    color: var(--toolbar-bgcolor, black) !important;
  }

  .tabbrowser-tab:not([image]) .tab-icon-overlay:not([pinned], [sharing],[crashed]):hover {
    padding: 0 !important;
  }

  /** PictureInPicture Tab - Show PIP Icon ************************************/
  .tab-icon-sound[pictureinpicture]:not([pinned]) {
    /* Shape */
    display: -moz-inline-box !important;
    width:  14px;
    height: 14px;
    -moz-box-ordinal-group: 2 !important;

    /* Color */
    fill: currentColor;
    opacity: 0.8;
    -moz-context-properties: fill;

    /* Icon */
    list-style-image: url(chrome://global/skin/media/picture-in-picture-open.svg);
  }
  .tab-icon-sound[pictureinpicture]:not([pinned])[selected] {
    opacity: 0.95;
  }

  /* Close Button's position */
  .tabbrowser-tab[pictureinpicture]:not([pinned]) .tab-close-button {
    margin-left: 7px !important;
    -moz-box-ordinal-group: 2 !important;
  }
  .tabbrowser-tab[pictureinpicture]:not([pinned]):hover .tab-close-button {
    margin-left: 0px !important;
  }

  /** Pinned Tab - Replace Favicon to Close Button at Selected ****************/
  .tabbrowser-tab[pinned][visuallyselected]:not([busy]) .tab-close-button {
    display: -moz-box !important;
    -moz-box-ordinal-group: 0 !important;
    transform: translateX(-1px);

    /* Looks like hover */
    width: 24px !important;
    height: 24px !important;
    padding: 7px !important;
  }
  .tabbrowser-tab[pinned][visuallyselected] .tab-icon-image {
    display: none !important;
  }

  /* Left Padding - Assume the icon size is 17px */
  .tabbrowser-tab[pinned][visuallyselected]:not([busy]) .tab-content {
    padding-inline: 7.5px !important; /* Original: 10px */
  }

  /* Right Padding - Assume the icon size is 17px */
  .tabbrowser-tab[pinned][visuallyselected]:not([busy]) .tab-icon-stack {
    width: 8.5px !important;
  }
  .tabbrowser-tab[pinned][visuallyselected]:not([busy]) .tab-content {
    padding-inline-end: 0px !important;
  }

  .tabbrowser-tab[pinned][visuallyselected][busy] .tab-content {
    padding-inline-end: 9.5px !important;
  }
  .tabbrowser-tab[pinned][busy] .tab-content {
    padding-inline: 10.5px !important;
  }

  /* Sound Tab - Don't move overlay */
  .tabbrowser-tab[pinned][busy] .tab-icon-overlay:is([soundplaying], [muted], [activemedia-blocked]) {
    transform: translateX(.5px) translateY(-2px) !important;
  }

  .tabbrowser-tab[pinned][visuallyselected]:not([busy]) .tab-icon-overlay {
    transform: translateX(-9px) translateY(-2px) !important;
    left: 0 !important;
  }

  /** Container Tab - Color line at icon's bottom *****************************/
  .tab-context-line {
    display: none;
  }

  .tab-icon-image {
    box-sizing: content-box;
    padding: 3px 0;

    border-bottom: 2px solid var(--identity-icon-color);
  }

  /* None exist favicon & Pinned to select */
  .tabbrowser-tab:not([image]):not([pinned], [sharing], [crashed]):not([soundplaying], [muted], [activemedia-blocked]) .tab-content::before,
  .tabbrowser-tab[pinned][visuallyselected]:not([busy]):not(:hover) .tab-content::before {
    /* Box Model */
    content: '';
    display: block;
    position: absolute !important;
    transition: 0.2s !important;
    transform: translateY(10px) !important;

    /* Shape */
    border-bottom: 2px solid var(--identity-icon-color);
    width: 16px;
  }
  .tabbrowser-tab:not([image]):not([pinned], [sharing], [crashed]):not([soundplaying], [muted], [activemedia-blocked]) .tab-content::before {
    transform: translateY(10px) !important; /* None exist favicon */
  }
  .tabbrowser-tab[pinned][visuallyselected]:not([busy]):not(:hover) .tab-content::before {
    transform: translateX(2.5px) translateY(10px) !important; /* Pinned to select */
  }

  /* None exist favicon - With Sound */
  .tabbrowser-tab:not([image]) .tab-icon-overlay:not([pinned], [sharing], [crashed]):is([soundplaying], [muted], [activemedia-blocked]) {
    box-sizing: content-box;
    padding: 3px 0;

    border-radius: 0 !important;
    border-bottom: 2px solid var(--identity-icon-color);
  }
  .tabbrowser-tab:not([image]) .tab-icon-overlay:not([pinned], [sharing], [crashed]):is([soundplaying], [muted], [activemedia-blocked]):hover {
    padding: 0;

    border-radius: 10px !important;
    border-bottom: none;
  }

  /* Pinned Tab - Titlechanged Indicator override */
  .tabbrowser-tab:is([image], [pinned]) > .tab-stack > .tab-content[attention]:not([selected="true"]) .tab-icon-image,
  .tabbrowser-tab > .tab-stack > .tab-content[pinned][titlechanged]:not([selected="true"]) .tab-icon-image {
    border-bottom: 2px solid transparent !important;
  }

  .tabbrowser-tab:is([image], [pinned])[usercontextid] > .tab-stack > .tab-content[attention]:not([selected="true"]),
  .tabbrowser-tab[usercontextid] > .tab-stack > .tab-content[pinned][titlechanged]:not([selected="true"]) {
    /* Original: radial-gradient(circle, var(--attention-icon-color), var(--attention-icon-color) 2px, transparent 2px); */
    --dotted-identity-image: radial-gradient(circle, var(--identity-icon-color), var(--identity-icon-color) 2px, transparent 2px);
    background-image: var(--dotted-identity-image), var(--dotted-identity-image), var(--dotted-identity-image) !important;
    background-position-x: 32%, 50%, 70% !important;
  }
  :root[uidensity=compact] .tabbrowser-tab:is([image], [pinned])[usercontextid] > .tab-stack > .tab-content[attention]:not([selected="true"]),
  :root[uidensity=compact] .tabbrowser-tab[usercontextid] > .tab-stack > .tab-content[pinned][titlechanged]:not([selected="true"]) {
    /* Original: radial-gradient(circle, var(--attention-icon-color), var(--attention-icon-color) 2px, transparent 2px); */
    var(--dotted-identity-image) !important;
    background-position-x: 30%, 50%, 70% !important;
  }

  /* Pinned Tab - Titlechanged & soundplaying */
  .tabbrowser-tab:is([image], [pinned])[usercontextid]:is([soundplaying], [muted], [activemedia-blocked]) > .tab-stack > .tab-content[attention]:not([selected="true"]),
  .tabbrowser-tab[usercontextid]:is([soundplaying], [muted], [activemedia-blocked]) > .tab-stack > .tab-content[pinned][titlechanged]:not([selected="true"]) {
    background-position-x: calc(32% - 1px), calc(50% - 1px), calc(70% - 1px) !important;
  }
  :root[uidensity=compact] .tabbrowser-tab:is([image], [pinned])[usercontextid]:is([soundplaying], [muted], [activemedia-blocked]) > .tab-stack > .tab-content[attention]:not([selected="true"]),
  :root[uidensity=compact] .tabbrowser-tab[usercontextid]:is([soundplaying], [muted], [activemedia-blocked]) > .tab-stack > .tab-content[pinned][titlechanged]:not([selected="true"]) {
    var(--dotted-identity-image) !important;
    background-position-x: calc(30% - 1px), calc(50% - 1px), calc(70% - 1px) !important;
  }

  /** Crashed Tab - Don't show Favicons ***************************************/
  .tab-icon-image[crashed] {
    display: none !important;
  }

  /** URL Bar - Reduce Padding ************************************************/
  :root:not([uidensity=touch]) #urlbar-container, #search-container {
    padding-block: 2px; /* Original: 4px */
    margin-inline: 5px; /* Original: 5px */
  }

  /* spread menu */
  :root[uidensity=compact] .urlbarView-row:not([type=tip], [type=dynamic]) {
    padding-block: 1px; /* [Compact, General]: 2px, Touch: 11px */
  }
  :root[uidensity=compact] #urlbar .search-one-offs:not([hidden]) {
    padding-block: 2px; /* [Compact, General]: 4px, Touch 11px */
  }

  /** BookMark Bar - Reduce Height ********************************************/
  :root[uidensity=compact] #PersonalToolbar toolbarbutton {
      margin-top: 0px; /* Original: 2px */
  }

  /** Menu - Reduce Padding ***************************************************/
  :root:not([uidensity=touch]) menupopup > menuitem, menupopup > menu {
    padding-block: 0.35em !important; /* Original: 0.5em */
  }
  :root:not([uidensity=touch]) .menu-text, .menu-iconic-text {
    padding-inline-end: 0 !important; /* Original: 2px */
  }
  :root:not([uidensity=touch]) .menupopup-arrowscrollbox {
    padding-block: 1px !important;    /* Original: 4px*/
  }
  :root:not([uidensity=touch]) #context-navigation:not([hidden]) {
    padding: 0 0 1px !important;      /* Original: 0 0 4px*/
  }
  :root:not([uidensity=touch]) .menu-right {
    margin-right: 6px !important;     /* Original: 12px */
  }

  :root[uidensity=compact] menupopup > menuitem, menupopup > menu {
    padding-block: 0.25em !important; /* Original: 0.5em */
  }

  /** Panel - Icons ***********************************************************/
  /* Padding */
  :root {
    --arrowpanel-menublank-padding: calc(var(--arrowpanel-menuicon-padding) * 2 + 8px) !important;
    --arrowpanel-menuimageblank-padding: calc(var(--arrowpanel-menuitem-padding) - 2px) !important;
  }

  .subviewbutton > .toolbarbutton-text {
    padding-inline-start: var(--arrowpanel-menuicon-padding) !important;
  }
  #panelMenu_bookmarksMenu .subviewbutton[disabled=true] .toolbarbutton-text,
  #appMenu_historyMenu     .subviewbutton[disabled=true] .toolbarbutton-text {
    padding-inline-start: var(--arrowpanel-menublank-padding) !important;
  }
  #appMenu-proton-update-banner .toolbarbutton-text {
    margin-inline-start: 0 !important;
  }

  #appMenu-multiView .subviewbutton::before,
  #appMenu-proton-update-banner::before {
    display: -moz-inline-box;
    margin-inline-end: var(--arrowpanel-menuicon-padding);
    width:  16px !important;
    height: 16px !important;
  }
  #appMenu-proton-update-banner {
    margin-bottom: 2px !important;
  }
  #appMenu-proton-update-banner::before {
    margin-inline-start: var(--arrowpanel-menuitem-padding) !important;
  }
  #appMenu-fxa-status2,
  #appMenu-zoom-controls2 {
    align-items: center;
    padding-top:    var(--arrowpanel-menuimageblank-padding) !important;
    padding-bottom: var(--arrowpanel-menuimageblank-padding) !important;
  }

  /* Icons Color */
  #appMenu-multiView .subviewbutton::before,
  #appMenu-proton-update-banner::before,
  .subviewbutton > image {
    fill: currentColor !important;
    fill-opacity: var(--toolbarbutton-icon-fill-opacity) !important;
    -moz-context-properties: fill !important;
  }

  /* Panel - Main */
  #appMenu-proton-update-banner::before {
    content: url(chrome://browser/skin/whatsnew.svg);
  }
  #appMenu-fxa-status2::before { /* Don't exist img tag */
    content: url(chrome://browser/skin/fxa/avatar-empty.svg);
  }
  #appMenu-fxa-status2[fxastatus=signedin]::before { /* Don't exist img tag */
    display: none;
  }
  #appMenu-fxa-status2[fxastatus=signedin] #appMenu-fxa-label2::before {
    /* url("https://profile.accounts.firefox.com/v1/avatar/a") */
    content: '';
    background-image: var(--avatar-image-url) !important;
  }

  #appMenu-new-tab-button2 {
    list-style-image: url(chrome://browser/skin/new-tab.svg);
  }
  #appMenu-new-window-button2 {
    list-style-image: url(chrome://browser/skin/window.svg);
  }
  #appMenu-new-private-window-button2 {
    list-style-image: url(chrome://browser/skin/privateBrowsing.svg);
  }

  #appMenu-bookmarks-button{
    list-style-image: url(chrome://browser/skin/bookmark.svg);
  }
  #appMenu-history-button {
    list-style-image: url(chrome://browser/skin/history.svg);
  }
  #appMenu-downloads-button {
    list-style-image: url(chrome://browser/skin/downloads/downloads.svg);
  }
  #appMenu-passwords-button {
    list-style-image: url(chrome://browser/skin/login.svg);
  }
  #appMenu-extensions-themes-button {
    list-style-image: url(chrome://mozapps/skin/extensions/extension.svg);
  }

  #appMenu-print-button2 {
    list-style-image: url(chrome://global/skin/icons/print.svg);
  }
  #appMenu-save-file-button2 {
    list-style-image: url(chrome://browser/skin/save.svg);
  }
  #appMenu-find-button2 {
    list-style-image: url(chrome://global/skin/icons/search-glass.svg);
  }
  #appMenu-zoom-controls2::before {
    content: url(./icons/screenshot.svg);
  }

  #appMenu-settings-button {
    list-style-image: url(chrome://global/skin/icons/settings.svg);
  }
  #appMenu-more-button2 {
    list-style-image: url(chrome://browser/skin/ion.svg);
  }
  #appMenu-help-button2 {
    list-style-image: url(chrome://global/skin/icons/help.svg);
  }

  #appMenu-quit-button2 {
    list-style-image: url(chrome://browser/skin/quit.svg);
  }

  /* Panel - Account */
  #PanelUI-fxa-menu-connect-device-button  .toolbarbutton-icon,
  #PanelUI-fxa-menu-account-signout-button .toolbarbutton-icon {
    width:  16px !important;
    height: 16px !important;
  }

  /* Default */
  #fxa-menu-avatar {
    display: -moz-inline-box !important;
    margin-inline-end: var(--arrowpanel-menuitem-padding);
  }

  .syncNowBtn {
    visibility: visible !important;
    -moz-box-ordinal-group: 1 !important;
    margin-inline-end: var(--arrowpanel-menuicon-padding);
  }
  #PanelUI-fxa-menu-setup-sync-button {
    list-style-image: url(chrome://browser/skin/sync.svg);
  }

  #PanelUI-fxa-menu-connect-device-button {
    list-style-image: url(chrome://browser/skin/fxa/add-device.svg);
  }
  #PanelUI-fxa-menu-sendtab-button {
    list-style-image: url(chrome://browser/skin/send-to-device.svg);
  }
  #PanelUI-fxa-menu-sync-prefs-button,
  #PanelUI-remotetabs-view-managedevices {
    list-style-image: url(chrome://global/skin/icons/settings.svg);
  }
  #PanelUI-fxa-menu-account-signout-button {
    list-style-image: url(chrome://browser/skin/sign-out.svg);
  }

  .PanelUI-remotetabs-notabsforclient-label {
    margin-inline-start: calc(var(--arrowpanel-menuicon-padding) + var(--arrowpanel-menuitem-padding)) !important;
    padding-inline-start: var(--arrowpanel-menublank-padding) !important;
  }

  /* Change Separator */
  #PanelUI-fxa-menu::before{
    content: "";
    display: -moz-box;
    border-bottom: 1px solid var(--panel-separator-color);
    margin: var(--panel-separator-margin);
    padding: 0;
  }
  #PanelUI-fxa-menu > :first-child{
    -moz-box-ordinal-group: 0;
  }
  #PanelUI-sign-out-separator {
    display: none;
  }
  .pageAction-sendToDevice-device.subviewbutton.sync-menuitem.sendtab-target[clientType=""] {
    list-style-image: url(chrome://browser/skin/send-to-device.svg);
  }
  .pageAction-sendToDevice-device.subviewbutton.sync-menuitem.sendtab-target:not([clientType]) {
    list-style-image: url(chrome://global/skin/icons/settings.svg);
  }

  /* Panel - Bookmark */
  #panelMenuBookmarkThisPage {
    list-style-image: url(chrome://browser/skin/bookmark-hollow.svg);
  }
  panelMenuBookmarkThisPage[starred] {
    list-style-image: url(chrome://browser/skin/bookmark.svg);
  }

  #panelMenu_searchBookmarks {
    list-style-image: url(chrome://global/skin/icons/search-glass.svg);
  }
  #panelMenu_viewBookmarksToolbar {
    list-style-image: url(chrome://browser/skin/bookmarks-toolbar.svg);
  }

  #panelMenu_showAllBookmarks {
    list-style-image: url(chrome://browser/skin/bookmark-star-on-tray.svg);
  }

  /* Panel - History */
  #appMenuRecentlyClosedTabs {
    list-style-image: url(chrome://browser/skin/tab.svg);
  }
  #appMenuRecentlyClosedWindows {
    list-style-image: url(chrome://browser/skin/window.svg);
  }
  #appMenuRestoreSession {
    list-style-image: url(chrome://browser/skin/restore-session.svg);
  }
  #appMenuClearRecentHistory {
    list-style-image: url(chrome://browser/skin/forget.svg);
  }

  #PanelUI-historyMore {
    list-style-image: url(chrome://browser/skin/history.svg);
  }

  #appMenu-library-recentlyClosedTabs {
    list-style-image: url(./icons/movetowindow-16.svg);
  }
  #appMenu-library-recentlyClosedWindows {
    list-style-image: url(chrome://browser/skin/restore-session.svg);
  }

  /* Panel - More tools */
  #appmenu-moreTools-button {
    list-style-image: url(chrome://browser/skin/customize.svg);
  }

  #appmenu-developer-tools-view  .subviewbutton:nth-child(1) {  /* Web Developer Tools */
    list-style-image: url(chrome://browser/skin/developer.svg);
  }
  #appmenu-developer-tools-view  .subviewbutton:nth-child(2) {  /* Task Manager */
    list-style-image: url(./icons/performance.svg);
  }
  #appmenu-developer-tools-view  .subviewbutton:nth-child(3) {  /* Remote Debugging - Edge bug.svg */
    list-style-image: url(./icons/bug.svg);
  }
  #appmenu-developer-tools-view  .subviewbutton:nth-child(4) {  /* Browser Toolbox - Edge webdeveloper.svg */
    list-style-image: url(./icons/webdeveloper.svg);
  }
  #appmenu-developer-tools-view  .subviewbutton:nth-child(5) {  /* Browser Content Toolbaox -  */
    list-style-image: url(./icons/command-frames.svg);
  }
  #appmenu-developer-tools-view  .subviewbutton:nth-child(6) {  /* Browser Console */
    list-style-image: url(chrome://devtools/skin/images/command-console.svg);
  }
  #appmenu-developer-tools-view  .subviewbutton:nth-child(7) {  /* Responsive Design Mode */
    list-style-image: url(./icons/command-responsivemode.svg);
  }
  #appmenu-developer-tools-view  .subviewbutton:nth-child(8) {  /* Eyedropper */
    list-style-image: url(chrome://devtools/skin/images/command-eyedropper.svg);
  }
  #appmenu-developer-tools-view  .subviewbutton:nth-child(9) {  /* Page Source - Edge file-search.svg */
    list-style-image: url(./icons/search-file.svg);
  }
  #appmenu-developer-tools-view  .subviewbutton:nth-child(10) { /* Extensions for Devel */
    list-style-image: url(chrome://devtools/skin/images/debugging-addons.svg);
  }
  #appmenu-developer-tools-view .subviewbutton:last-child {
    margin-bottom: 6px !important;
  }

  /* Panel - Help */
  #appMenu_menu_openHelp {
    list-style-image: url(chrome://global/skin/icons/help.svg);
  }
  #appMenu_feedbackPage {
    list-style-image: url(./icons/send.svg);
  }
  #appMenu_helpSafeMode {
    list-style-image: url(chrome://devtools/skin/images/debugging-workers.svg);
  }
  #appMenu_troubleShooting {
    list-style-image: url(chrome://global/skin/icons/more.svg);
  }
  #appMenu_help_reportSiteIssue {
    list-style-image: url(chrome://global/skin/icons/lightbulb.svg);
  }
  #appMenu_menu_HelpPopup_reportPhishingtoolmenu {
    list-style-image: url(chrome://global/skin/icons/warning.svg);
  }
  #appMenu_aboutName{
    list-style-image: url(chrome://global/skin/icons/info.svg);
  }

  /* Panel - Library */
  #appMenu-library-bookmarks-button {
    list-style-image: url(chrome://browser/skin/bookmark.svg);
  }
  #appMenu-library-history-button {
    list-style-image: url(chrome://browser/skin/history.svg);
  }
  #appMenu-library-downloads-button{
    list-style-image: url(chrome://browser/skin/downloads/downloads.svg);
  }

  /* Toolbar - Overflow Menu */
  #overflowMenu-customize-button {
    list-style-image: url(chrome://browser/skin/customize.svg);
  }

  /* All Tab Menu */
  #allTabsMenu-undoCloseTab {
    list-style-image: url(chrome://global/skin/icons/undo.svg);
  }
  #allTabsMenu-searchTabs {
    list-style-image: url(chrome://global/skin/icons/search-glass.svg);
  }
  #allTabsMenu-containerTabsButton {
    list-style-image: url(./icons/container-openin-16.svg);
  }

  #allTabsMenu-hiddenTabsButton {
    list-style-image: url(./icons/password-hide.svg);
  }

  #allTabsMenu-containerTabsView .subviewbutton:last-child {
    list-style-image: url(chrome://global/skin/icons/settings.svg);
  }
}