WhiteSur-gtk-theme/src/sass/gtk/_common-4.0.scss

//This is the RIGHT PLACE to edit the stylesheet

//let's start by telling people not to edit the generated CSS:
$cakeisalie: "This stylesheet is generated, DO NOT EDIT";
/* #{$cakeisalie} */

$side_style_shadow: linear-gradient(to left, rgba(black, if($variant == 'light', 0.02, 0.06)), transparent 6px);

%side_style_left {
  background-image: $side_style_shadow;
  background-color: rgba($dark_sidebar_bg, 1);
  box-shadow: none;
  border: none;
}

%side_headerbar_left {
  &, &:backdrop {
    background-image: $side_style_shadow;
    background-color: rgba($dark_sidebar_bg, 1);
    border: none;
  }
}

%side_headerbar_right {
  &, &:backdrop {
    background-image: none;
    background-color: rgba($base_color, 1);
    border: none;
  }
}

%side_searchbar {
  > revealer > box {
    background-color: rgba($dark_sidebar_bg, 1);
    border-color: $dark_sidebar_border;
  }
}

%side_separator {
  &, &:backdrop {
    background-image: if($variant == 'light', image($solid_borders_color), image($header_border));
    background-color: transparent;
    border-right: none;
  }
}

$list_shadow: if($variant == 'light',
                (inset 0 0 0 1px rgba(black, 0.04), inset 0 1px rgba(black, 0.05)),
                (inset 0 0 0 1px rgba(white, 0.04), inset 0 1px rgba(white, 0.06)));

%circular_list {
  border-radius: $bd_radius;
  box-shadow: $list_shadow;
  background-color: if($variant == 'light', rgba(black, 0.03), rgba(white, 0.05));
  border: none;
  color: $text_color;

  > separator {
    min-height: 0;
    background-color: transparent;
  }
}

%circular_row {
  border: none;

  &:first-child {
    border-top-left-radius: $bd_radius;
    border-top-right-radius: $bd_radius;
  }

  &:last-child { // Not use ?
    border-bottom-left-radius: $bd_radius;
    border-bottom-right-radius: $bd_radius;
  }

  &:only-child {
    border-radius: $bd_radius;
  }

  & + row {
    border-top: 1px solid transparent;
    border-image: linear-gradient(to right,
                                  transparent 0%,
                                  transparent 2%,
                                  $menu_bd 2%,
                                  $menu_bd 98%,
                                  transparent 98%,
                                  transparent 100%) 1 0 0 0 / 1px 0 0 0 stretch;
  }

  &:hover, &:active, &:selected {
    &, & + row {
      border-image: none;
    }
  }
}

%sidebar_row {
  margin: 2px 4px;
  border-radius: $bd_radius;
  -gtk-outline-radius : $bd_radius - 2px;
}

// catch all extend
%selected_items {
  background-color: $selected_bg_color;
  color: $selected_fg_color;

  &:disabled {
    @if $gnome_version == 'old' {
      color: mix($selected_fg_color, $selected_bg_color, 50%);
    } @else {
      color: color-mix(in srgb, $selected_fg_color 50%, $selected_bg_color);
    }
  }
}

%nobg_selected_items {
  color: $selected_fg_color;

  &:disabled {
    @if $gnome_version == 'old' {
      color: mix($selected_fg_color, $selected_bg_color, 50%);
    } @else {
      color: color-mix(in srgb, $selected_fg_color 50%, $selected_bg_color);
    }
  }
}

%linked_middle {
  border-radius: 0;
  border-right-style: none;
}

%linked {
  border-radius: 0;
  border-right-style: none;

  &:first-child {
    border-top-left-radius: $bt_radius;
    border-bottom-left-radius: $bt_radius;
  }

  &:last-child {
    border-top-right-radius: $bt_radius;
    border-bottom-right-radius: $bt_radius;
    border-right-style: solid;
  }

  &:only-child {
    border-radius: $bt_radius;
    border-style: solid;
  }
}

%linked_vertical_middle {
  border-radius: 0;
  border-bottom-style: none;
}

%linked_vertical{
  border-radius: 0;
  border-bottom-style: none;

  &:first-child {
    border-top-left-radius: $bt_radius;
    border-top-right-radius: $bt_radius;
  }

  &:last-child {
    border-bottom-left-radius: $bt_radius;
    border-bottom-right-radius: $bt_radius;
    border-bottom-style: solid;
  }

  &:only-child {
    border-radius: $bt_radius;
    border-style: solid;
  }
}

%undecorated_button {
  border-color: transparent;
  background-color: transparent;
  background-image: none;
  box-shadow: none;
}

// Buttons on selected backgrounds
%selected-button {
  color: $selected_fg_color;
  background-color: transparentize($selected_fg_color, 1);
  border-color: transparentize($selected_fg_color, 0.5);
  background-image: none;
  box-shadow: none;

  &.flat {
    @include button(undecorated);
    color: $selected_fg_color;
    background-color: transparentize($selected_fg_color, 1);
    background-image: none;
  }

  &.flat:disabled {
    &, label { color: transparentize($selected_fg_color, 0.6); }
  }

  &:hover {
    color: $selected_fg_color;
    background-color: transparentize($selected_fg_color, 0.8);
    border-color: transparentize($selected_fg_color, 0.5);
    box-shadow: none;
  }

  &:active, &:active:hover, &:checked {
    color: $selected_fg_color;
    background-color: transparentize($selected_fg_color, 0.6);
    border-color: transparentize($selected_fg_color, 0.5);
    box-shadow: none;
  }

  &:disabled {
    &, label { color: transparentize($selected_fg_color, 0.5); }
    background-color: transparentize($selected_fg_color, 1);
    border-color: transparentize($selected_fg_color, 0.6);
    box-shadow: none;
  }

  &:disabled:active, &:disabled:checked {
    color: $selected_bg_color;
    background-color: transparentize($selected_fg_color, 0.5);
    border-color: transparentize($selected_fg_color, 0.6);
  }
}

%normal_selected_button {
  color: $selected_fg_color;
  background-color: transparentize($selected_fg_color, 1);
  border-color: transparentize($selected_fg_color, 0.5);
  background-image: none;
}

//
// Base States
//
.background {
  color: $fg_color;
  background-color: rgba($bg_color, 1);

  // > box > stack { background-color: $bg_color; }

  &.csd {
    border-radius: $wm_radius; // Set csd windows botttom border radius

    &.maximized, &.tiled, &.fullscreen {
      border-radius: $maximized_radius; // Set csd windows botttom border radius
    }
  }

  &.solid-csd { border-radius: 0; }
}

dnd {
  color: $fg_color;
}

.normal-icons {
  -gtk-icon-size: 16px;
}

.large-icons {
  -gtk-icon-size: 32px;
}

spinner:disabled,
arrow:disabled,
scrollbar:disabled,
check:disabled,
radio:disabled,
treeview.expander:disabled { -gtk-icon-filter: opacity(0.5); }

%view, .view {
  color: $text_color;
  background-color: $base_color;
  transition: all 200ms $ease-out-quad;

  // &:hover { background-color: if($variant=='light', darken($base_color, 3%), lighten($base_color, 3%)); }

  &:selected {
    color: $selected_fg_color;
    background-color: $selected_bg_color;
    transition: all 350ms $ease-out-quad;

    &:focus {
      @extend %selected_items;
    }
  }
}

textview {
  background-color: $base_color; // This will get overridden by .view, needed by gedit line numbers

  > text {
    background-color: $base_color;
    // @extend %view;
    selection { &:focus, & { @extend %selected_items; }}
  }

  border {
    background-color: mix($bg_color, $base_color, 50%);
  }

  &:drop(active) {
    caret-color: $drop_target_color;
  }
}

iconview {
  @extend %view;

  &, &:hover, &:selected { border-radius: $bt_radius; }
}

%rubberband,
rubberband {
  @if $gnome_version == 'old' {
    border: 1px solid darken($selected_bg_color, 10%);
    background-color: transparentize(darken($selected_bg_color, 10%), 0.8);
  } @else {
    border: 1px solid color-mix(in srgb, black 10%, $selected_bg_color);
    background-color: RGB(color-mix(in srgb, black 10%, $selected_bg_color), 80%);
  }
}

flowbox {
  > rubberband { @extend %rubberband; }

  > flowboxchild {
    padding: 3px;
    border-radius: $bt_radius;

    &:selected {
      @extend %selected_items;

      outline-offset: -2px;
    }
  }

  &.search-bar { border-bottom: 1px solid $header_border; }
}

gridview {
  > rubberband { @extend rubberband; }

  > child {
    padding: 3px;

    &:selected {
      @if $gnome_version == 'old' {
        outline-color: darken($selected_bg_color, 15%);
      } @else {
        outline-color: color-mix(in srgb, black 15%, $selected_bg_color);
      }
      @extend %selected_items;
    }

    box { //cells
      border-spacing: 8px; //label separation
      margin: 12px;
    }
  }
}

coverflow cover {
  color: $text_color;
  background-color: $base_color;
  border: 1px solid black;
}

%dim-label, .dim-label {
  opacity: 0.55;
  text-shadow: none;
}

label {
  &.separator {
    @extend %dim-label;

    color: $fg_color;
  }

  > selection {
    color: $selected_fg_color;
    background-color: $selected_bg_color;
  }

  &:disabled {
    opacity: 1;
    color: $disabled_fg_color;

    selection {
      @if $gnome_version == 'old' {
        color: mix($selected_fg_color, $selected_bg_color, 50%);
      } @else {
        color: color-mix(in srgb, $selected_fg_color 50%, $selected_bg_color);
      }
    }
  }
}

.accent {
  color: $selected_bg_color;
}

.success {
  color: $success_color;
}

.warning {
  color: $warning_color;
}

.error {
  color: $error_color;
}

window.assistant {
  .sidebar {
    background-color: $base_color;
  }

  &.csd .sidebar { border-top-style: none; }

  .sidebar > label { padding: $container_padding $container_padding * 2; }

  .sidebar > label.highlight {
    background-color: $selected_bg_color;
    color: $selected_fg_color;
  }
}

%osd {
  color: $osd_fg_color;
  border: none;
  background-color: $osd_bg_color;
  background-clip: padding-box;
  border-radius: $bt_radius;
}

.osd {
  @extend %osd;
  padding: $container_padding;
  margin: $container_padding;
  box-shadow: 0 3px 8px rgba(black, 0.35);

  &.circular { border-radius: 100%; }
}

//
// Spinner Animations
//
@keyframes spin {
  to { transform: rotate(1turn); }
}

spinner {
  background: none;
  opacity: 0; // non spinning spinner makes no sense
  -gtk-icon-source: -gtk-icontheme('process-working-symbolic');

  &:checked {
    opacity: 1;
    animation: spin 1s linear infinite;

    &:disabled {
      opacity: 0.5;
    }
  }
}

// General Typography
.large-title {
  font-weight: 300;
  font-size: 24pt;
}

.title {
  &-1 {
    font-weight: 800;
    font-size: 20pt;
  }

  &-2 {
     font-weight: 800;
     font-size: 15pt;
  }

  &-3 {
    font-weight: 700;
    font-size: 15pt;
  }

  &-4 {
    font-weight: 700;
    font-size: 13pt;
  }
}

.heading {
  font-weight: 700;
  font-size: 11pt;
}

.body {
  font-weight: 400;
  font-size: 11pt;
}

.caption {
  font-weight: 400;
  font-size: 9pt;

  &-heading {
    font-weight: 700;
    font-size: 9pt;
  }
}

.numeric {
  font-feature-settings: "tnum";
}

//
// Text Entries
//
%Linked_entrys {
  @include entry(normal);
  border: none;

  &:focus {
    @include entry(focus);
  }

  &:disabled {
    @include entry(insensitive);
  }
}

%entry,
entry {
  min-height: $menuitem_size - 4px;
  border: none;
  padding: 2px $container_padding + 2px;
  border-radius: $bt_radius;
  caret-color: currentColor;
  transition: all 300ms $ease-out-quad;
  animation-timing-function: ease-in-out;

  &.search { border-radius: $bt_radius; }

  @include entry(normal);

  > image { // icons inside the entry
    color: mix($fg_color, $base_color, 80%);

    &:first-child { padding-left: 0; padding-right: $container_padding; }
    &:last-child { padding-right: 0; padding-left: $container_padding; }
  }

  > text > placeholder {
    @extend .dim-label;
  }

  @at-root %flat_entry, &.flat {
    &:focus-within, &:backdrop, &:disabled, &:backdrop:disabled, & {
      min-height: 0;
      background-image: none;
      border-color: transparent;
      border-radius: 0;
    }
  }

  &:hover {
    @include entry(hover);
  }

  &:focus-within {
    @include entry(focus);

    > placeholder {
      opacity: 0; // We hide placeholders on focus
    }
  }

  &:disabled {
    @include entry(insensitive);
  }

  > text > selection { @extend %selected_items; }

  // error and warning style
  @each $e_type, $e_color, $e_fg_color in (warning, $warning_color, $light_fg_color),
                                          (error, $error_color, $light_fg_color),
                                          (search-missing, $error_color, $light_fg_color) { // entry.search-missing for Gnome-Builder
    &.#{$e_type} {
      color: $e_fg_color;
      background-color: mix($e_color, $base_color, 60%);
      border-image: none;

      image { color: $e_fg_color; }

      &:focus-within {
        color: $e_fg_color;
        background-color: $e_color;
        box-shadow: none;
      }

      > selection {
        background-color: $e_fg_color;
        color: $e_color;
      }
    }
  }

  &:drop(active) {
    &:focus, & {
      border-color: $drop_target_color;
      box-shadow: none;
      border-image: none;
    }
  }

  .osd & {
    @include entry(osd);
    border-image: none;
    &:focus { @include entry(osd-focus); border-image: none; }
    &:disabled { @include entry(osd-insensitive); border-image: none; }

    selection {
      &:focus, & {
        color: $selected_bg_color;
        background-color: $selected_fg_color;
      }
    }
  }

  > progress {
    margin: 0 -6px;
    border-radius: 0;
    border-width: 0 0 2px;
    border-color: $progress_color;
    border-style: solid;
    background-image: none;
    background-color: transparent;
    box-shadow: none;
  }

  progress > trough > progress {
    background-color: transparent;
    background-image: none;
    border-radius: 0;
    border-width: 0 0 2px;
    border-color: $progress_color;
    border-style: solid;
    box-shadow: none;
  }

  // linked entries
  .linked:not(.vertical) > &,
  .linked:not(.vertical) > &:focus-within {
    @extend %linked;
    min-height: 20px;
  }

  .linked.vertical > &,
  .linked.vertical > &:focus-within {
    @extend %linked_vertical;
  }

  .linked > &:not(:only-child) {
    @extend %Linked_entrys;
  }

  .linked:not(.vertical) > & + button.combo { padding-left: 0; }
  .linked.vertical > & + button.combo { padding: 0; }
}

.entry-tag {
  margin: 0;
  min-height: 16px;
  border-radius: $circular_radius;
  box-shadow: none;
  background-color: $suggested_color;
  color: $light_fg_color;
  border: none;
  padding: 2px;

  &:hover { box-shadow: $shadow_4; }

  // side margins: compensate the entry padding with a negative margin
  // then the negative margin itself
  :dir(ltr) & {
    margin-left: $container_padding / 2;
    margin-right: 0;
  }

  :dir(rtl) & {
    margin-left: 0;
    margin-right: $container_padding / 2;
  }

  // seems any sizing doesn't work
  > button {
    min-height: 20px;
    min-width: 20px;
    padding: 0;
    border-radius: $circular_radius;
    @extend %selected-button;
  }
}

treeview entry {
  &:focus-within {
    &:dir(rtl), &:dir(ltr) { // specificity bump hack
      background-color: $base_color;
      transition-property: color, background;
    }
  }

  &.flat, & {
    border-radius: 0;
    background-image: none;
    background-color: $base_color;

    &:focus-within { border-color: $selected_bg_color; }
  }
}

// Editable Labels
editablelabel > stack > text {
  @include entry(normal);
}

//
// Buttons
//
// stuff for .needs-attention

$_dot_color: '';

@if $gnome_version == 'old' {
  $_dot_color: if($variant=='light', $selected_bg_color, lighten($selected_bg_color, 15%));
} @else {
  $_dot_color: if($variant=='light', $selected_bg_color, color-mix(in srgb, white 15%, $selected_bg_color));
}

@keyframes needs_attention {
  from { background-image: radial-gradient(farthest-side, $_dot_color 0%, $_dot_color 0%); }
  to { background-image: radial-gradient(farthest-side, $_dot_color 95%, $_dot_color); }
}

%needs_attention {
  // the dot is drawn by using two radial gradient, the first one is the actual dot, the other
  // simulates the shadow labels and icons normally have in buttons.
  animation: needs_attention 150ms ease-in;

  background-image: radial-gradient(farthest-side, $_dot_color 96%, $_dot_color);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;

  @if $variant == 'light' { background-position: right 3px, right 4px; }

  @else { background-position: right 3px, right 2px; }

  &:backdrop { background-size: 6px 6px, 0 0;}

  &:dir(rtl) {
    @if $variant == 'light' { background-position: left 3px, left 4px; }

    @else { background-position: left 3px, left 2px; }
  }
}

%flat_button {
  @include button(flat-normal);
  &:hover { @include button(flat-hover); }
  &:active { @include button(flat-active); }
  &:checked, &:selected { @include button(flat-checked); }
  &:disabled { @include button(flat-insensitive); }
}

%opaque_button {
  box-shadow: none;
  transition: $button_transition;

  .osd &:focus:focus-visible {
    outline-color: rgba(white, 0.15)
  }

  &:hover {
    background-image: image(gtkalpha(currentColor, .1));
  }

  &.keyboard-activating,
  &:active {
    background-image: image(transparentize(black, .8));
  }

  &:checked {
    background-image: image(transparentize(black, .85));

    &:hover {
      background-image: image(transparentize(black, .95));
    }

    &.keyboard-activating,
    &:active {
      background-image: image(transparentize(black, .7));
    }
  }
}

%button,
button {
  @at-root %button_basic, & {
    min-height: $menuitem_size - 4px;
    min-width: $menuitem_size - 10px;
    transition: $button_transition;
    border: 1px solid;
    border-radius: $bt_radius;
    padding: 0 $container_padding + 2px;
    background-clip: if($variant=='light', border-box, padding-box);
    @include button(normal);
  
    &:hover {
      @include button(hover);
      background-clip: if($variant=='light', border-box, padding-box);
      -gtk-icon-filter: brightness(1.2);
    }
  
    &.keyboard-activating, &:active, &:checked {
      @include button(active);
  
      background-clip: if($variant=='light', border-box, padding-box);
      transition-duration: 200ms;
  
      &:not(:disabled) label:disabled { color: inherit; opacity: 0.6; }
    }
  
    &:disabled {
      @include button(insensitive);
      background-clip: if($variant=='light', border-box, padding-box);
  
      &:active, &:checked {
        @include button(insensitive-active);
        background-clip: if($variant=='light', border-box, padding-box);
      }
    }
  }

  separator { margin: 4px 1px; }

  &.flat {
    @extend %flat_button;
    min-height: $menuitem_size - 4px;
    transition: none;

    &:hover {
      transition: $button_transition;
      transition-duration: 350ms;

      &:active { transition: $button_transition; }
     }

    &:checked:hover { background-image: none; }

    &.toggle.popup {
      min-width: $menuitem_size - 8px;
    }
  }

  &.opaque {
    @extend %opaque_button;

    background-color: mix($bg_color, $fg_color, 80%);
    color: $fg_color;
  }

  &.image-button {
    min-height: $menuitem_size - 4px;
    padding-left: $container_padding;
    padding-right: $container_padding;
  }

  &.text-button {
    min-height: $menuitem_size - 4px;
    padding-left: $container_padding * 2;
    padding-right: $container_padding * 2;
  }

  &.text-button.image-button,
  &.image-text-button {
    min-height: $menuitem_size - 4px;
    padding-left: $container_padding;
    padding-right: $container_padding;

    > box,
    > box > box {
      border-spacing: $container_padding - 2px;

      > label {
        padding-left: 2px;
        padding-right: 2px;
      }
    }

    label {
      &:first-child {
        padding-left: $container_padding + 2;
        padding-right: $container_padding / 2;
      }

      &:last-child {
        padding-right: $container_padding + 2;
        padding-left: $container_padding / 2;
      }

      &:only-child {
        padding-left: $container_padding + 2px;
        padding-right: $container_padding + 2px;
      }
    }

    &.popup { padding-right: $container_padding; padding-left: $container_padding; }
  }

  &.arrow-button {
    padding-left: $container_padding * 1.5;
    padding-right: $container_padding * 1.5;

    > box { border-spacing: $container_padding - 2px; }

    &.text-button {
      > box { border-spacing: $container_padding - 2px; }
    }
  }

  // hide separators
  &.font {
    separator { background-color: transparent; background-image: none; }
    > box { border-spacing: $container_padding; }
    > box > box > label { font-weight: bold; }
  }

  @at-root %circular_button, &.circular, &.close { // The Bloody Circul Button
    border-radius: $circular_radius;
    padding: 0;
    min-height: $menuitem_size;
    min-width: $menuitem_size;

    label { padding: 0; }

    &:active, &:checked {
      @if $variant=='light' {
        @include button(flat-active);
        border-color: rgba(black, 0.2);
      }
    }
  }

  @at-root %pill_button,
  &.pill {
    min-height: $menuitem_size - 4px;
    min-width: $menuitem_size - 4px;
    padding: $container_padding;
    border-radius: $circular_radius;

    &.text-button, &.image-text-button {
      padding-left: $container_padding * 3;
      padding-right: $container_padding * 3;
    }
  }

  &.card {
    background-color: $fill_color;
    background-clip: padding-box;
    font-weight: inherit;
    padding: $container_padding;
    transition: $button_transition;

    &:hover {
      background-image: image(gtkalpha(currentColor, 0.03));
    }

    &.keyboard-activating,
    &:active {
      background-image: image(gtkalpha(currentColor, 0.08));
    }

    &:checked {
      background-color: $fill_color;
      background-image: image(gtkalpha(currentColor, 0.1));

      &:hover { background-image: image(gtkalpha(currentColor, 0.13)); }

      &.keyboard-activating,
      &:active { background-image: image(gtkalpha(currentColor, 0.19)); }

      &.has-open-popup { background-image: image(gtkalpha(currentColor, 0.13)); }
    }

    &:drop(active) {
      color: $drop_target_color;
      box-shadow: inset 0 0 0 1px $drop_target_color;
    }
  }

  @at-root %button_basic_drop_active,
  &:drop(active) {
    color: $drop_target_color;
    border-color: $drop_target_color;
    box-shadow: inset 0 0 0 1px $drop_target_color;
  }

  // big standalone buttons like in Documents pager
  &.osd {
    color: white;
    background-color: rgba(black, 0.65);
    border: none;
    box-shadow: none;

    &.image-button {
      padding: 3px;
      min-height: 28px;
      min-width: 28px;

      &.remove-button {
        padding: 0;
      }
    }

    &:hover {
      color: white;
      background-color: rgba(black, 0.75);
      box-shadow: none;
    }

    &.keyboard-activating, &:active, &:checked {
      color: white;
      background-color: rgba(black, 0.85);
    }

    &:disabled {
      opacity: 0.35;
    }
  }

  //overlay / OSD style
  @at-root %osd_button,
  .osd & {
    @include button(osd);

    &:hover { @include button(osd-hover); }
    &.keyboard-activating, &:active, &:checked { @include button(osd-active); }
    &:disabled { @include button(osd-insensitive); }

    &.flat {
      @include button(undecorated);
      box-shadow: none;

      &:hover { @include button(osd-hover); }

      &:disabled {
        @include button(osd-insensitive);
        background-image: none;
      }

      &:active, &:checked { @include button(osd-active); }
    }
  }

  .osd .linked:not(.vertical):not(.path-bar) > &:hover:not(:checked):not(:active):not(:only-child),
  .osd .linked:not(.vertical):not(.path-bar) > &:hover:not(:checked):not(:active) + &:not(:checked):not(:active) { box-shadow: none; }

  // Suggested and Destructive Action buttons
  @each $b_type, $b_color, $b_fg in (suggested-action, $suggested_color, $light_fg_color),
                                    (destructive-action, $destructive_color, $light_fg_color) {
    &.#{$b_type} {
      @include button(suggested_destructive, $b_color, $b_fg);

      &.flat {
        @include button(undecorated);
        color: $b_color;
      }

      &:hover {
        @include button(suggested_destructive, lighten($b_color, 5%), $b_fg);
      }

      &:active, &:checked {
        @include button(suggested_destructive, darken($b_color, 5%), $b_fg);
        box-shadow: none;
      }

      &.flat:disabled {
        @include button(undecorated);
        color: $disabled_fg_color;
      }

      &:disabled { @include button(insensitive); }
    }
  }

  stackswitcher > & {
    // to position the needs attention dot, padding is added to the button
    // child, a label needs just lateral padding while an icon needs vertical
    // padding added too.

    outline-offset: -3px; // needs to be set or it gets overridden by GtkRadioButton outline-offset

    > label {
      padding-left: $container_padding;  // label padding
      padding-right: $container_padding; //
    }

    > image {
      padding-left: $container_padding;
      padding-right: $container_padding;
    }

    &.text-button {
      padding-left: $container_padding + 4px;
      padding-right: $container_padding + 4px;
    }

    &.image-button {
      padding-left: 2px;
      padding-right: 2px;
    }

    &.needs-attention {
      > label, > image { @extend %needs_attention; }

      &:active, &:checked {
        > label, > image {
          animation: none;
          background-image: none;
        }
      }
    }
  }

  // hide separators
  &.font,
  &.file { separator { background-color: transparent; }}

  .linked:not(.vertical) > & { @extend %linked; }

  .linked.vertical > & { @extend %linked_vertical; }
}

menubutton {
  margin: 0;

  &.osd {
    background: none;
    color: inherit;

    > button { @extend %osd_button; }
  }

  &.circular > button { @extend %circular_button; }
  &.flat > button { @extend %flat_button; }
  &.pill > button { @extend %pill_button; }

  &.suggested-action {
    background-color: $suggested_color;
    color: white;
  }

  &.destructive-action {
    background-color: $destructive_color;
    color: white;
  }

  &.opaque {
    background-color: mix($bg_color, $fg_color, 80%);
    color: $fg_color;
  }

  &.suggested-action,
  &.destructive-action,
  &.opaque {
    border-radius: $bt_radius;

    &.circular, &.pill {
      border-radius: $circular_radius;
    }

    > button {
      @extend %flat_button;

      &, &:checked {
        background-color: transparent;
        color: inherit;
      }
    }
  }

  &.image-button > button {
    min-width: 24px;
    padding-left: 5px;
    padding-right: 5px;
  }

  arrow {
    min-height: 16px;
    min-width: 16px;
    &.none {
      -gtk-icon-source: -gtk-icontheme('open-menu-symbolic');
    }
    &.down {
      -gtk-icon-source: -gtk-icontheme('pan-down-symbolic');
    }
    &.up {
      -gtk-icon-source: -gtk-icontheme('pan-up-symbolic');
    }
    &.left {
      -gtk-icon-source: -gtk-icontheme('pan-start-symbolic');
    }
    &.right {
      -gtk-icon-source: -gtk-icontheme('pan-end-symbolic');
    }
  }

  .linked > &:not(:only-child) > button {
    @extend %linked_middle;
  }

  .linked > &:first-child > button {
    border-top-left-radius: $bt_radius;
    border-bottom-left-radius: $bt_radius;
  }

  .linked > &:last-child > button {
    border-top-right-radius: $bt_radius;
    border-bottom-right-radius: $bt_radius;
  }
}

splitbutton {
  border-radius: $bt_radius;

  &, & > separator {
    transition: $button_transition;
    transition-property: background;
  }

  > separator {
    margin-top: $container_padding;
    margin-bottom: $container_padding;
    background: none;
  }

  > menubutton > button {
    padding-left: $container_padding - 2px;
    padding-right: $container_padding - 2px;
  }

  // Since the inner button doesn't have any style classes on it,
  // we have to add them manually
  &.image-button > button {
    min-width: 24px;
    padding-left: $container_padding;
    padding-right: $container_padding;
  }

  &.text-button.image-button > button,
  &.image-text-button > button {
    padding-left: $container_padding * 1.5;
    padding-right: $container_padding * 1.5;

    > box {
      border-spacing: $container_padding;
    }
  }

  // Reimplementing linked so we don't blow up css
  > button:dir(ltr),
  > menubutton > button:dir(rtl) {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    margin-right: -1px;
  }

  > button:dir(rtl),
  > menubutton > button:dir(ltr) {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    margin-left: -1px;
  }

  @at-root %flat_split_button,
  &.flat {
    > separator {
      background: $borders_color;
    }

    &:hover,
    &:active,
    &:checked {
      background: gtkalpha(currentColor, 0.07);

      > separator {
        background: none;
      }
    }

    &:focus-within:focus-visible > separator {
      background: none;
    }

    > button,
    > menubutton > button {
      @extend %flat_button;

      border-radius: $bt_radius;
    }
  }

  &.suggested-action {
    background-color: $suggested_color;
    color: white;
  }

  &.destructive-action {
    background-color: $destructive_color;
    color: white;
  }

  &.opaque {
    background-color: mix($bg_color, $fg_color, 80%);
    color: $fg_color;
  }

  &.suggested-action,
  &.destructive-action,
  &.opaque {
    > button, > menubutton > button {
      @extend %flat_button;

      &, &:checked {
        color: inherit;
        background-color: transparent;
      }
    }

    > menubutton > button {
      &:dir(ltr) { box-shadow: inset 1px 0 $borders_color; }
      &:dir(rtl) { box-shadow: inset -1px 0 $borders_color; }
    }
  }

  > menubutton > button > arrow.none {
    -gtk-icon-source: -gtk-icontheme('pan-down-symbolic');
  }
}

buttoncontent {
  border-spacing: $container_padding;

  > label {
    font-weight: bold;

    &:dir(ltr) { padding-right: 2px; }
    &:dir(rtl) { padding-left: 2px; }
  }

  .arrow-button > box > &,
  splitbutton > button > & {
    > label {
      &:dir(ltr) { padding-right: 0; }
      &:dir(rtl) { padding-left: 0; }
    }
  }
}

// Some crazy linking stuff
@mixin linking_rules($a:0.7, $var:$variant, $vert:'false', $entry_rules:'true', $button_rules:'true',
                     $e_border:$entry_border, $b_border:$button_border) {

  $_border: if($vert=='false', left, top);

  @if $entry_rules=='true' {
    @each $e_type, $e_color in (':focus-within', $entry_highlight),
                               (':drop(active)', $drop_target_color),
                               ('.warning:focus-within', $warning_color),
                               ('.error:focus-within', $error_color) {

      > entry#{$e_type}:not(:only-child) {
        box-shadow: inset 0 0 0 2px $e_color;
      }
    }
  }

  @if $button_rules=='true' {
    $_uncolored_button: 'button:not(:checked):not(:active):not(.suggested-action):not(.destructive-action)';

    > button + button { border-#{$_border}-style: none; }
  }
}

// special case, because path-bars are bugged
@mixin pathbar_linking_rules ($sep_color: $button_border, $button_rules: 'true') {

  @if $button_rules == 'true' {
    > button + button {
      border-left-style: none;
    }
  }
}

// Apply the rules defined above
.linked:not(.vertical) {
  &:not(.path-bar) { @include linking_rules(); }
  &.path-bar { @include pathbar_linking_rules(); }
}

.linked.vertical { @include linking_rules($vert:'true'); }

// menu buttons
modelbutton.flat {
  transition: $shorter_transition;
  min-height: 20px + $container_padding;
  padding-left: $container_padding + 2px;
  padding-right: $container_padding + 2px;
  outline-offset: -3px;
  border-radius: $bt_radius;
  @extend %undecorated_button;

  &:hover {
    background-color: if($variant=='light', mix($fg_color,$bg_color,5%), mix($fg_color,$bg_color,10%));
    transition-duration: 50ms;
  }

  &:active, &:selected {
    &, arrow {
      background-color: $selected_bg_color;
      color: $selected_fg_color;
      transition: none;
      animation: none;
    }
  }

  &:checked { color: $fg_color; }
  &:disabled { color: $disabled_fg_color; }

  // FIXME: temporary workaround
  check:last-child,
  radio:last-child { margin-left: 8px; }

  check:first-child,
  radio:first-child { margin-right: 8px; }

  arrow.left, arrow.right {
    background-color: transparent;
    background-image: none;
    min-width: 16px;
    min-height: 16px;
    transition: none;
    color: $alt_fg_color;
    opacity: 1;

    &:hover, &:selected, &:focus {
      background-color: transparent;
      background-image: none;
      transition: none;
      color: $selected_fg_color;
    }

    &.left { -gtk-icon-source: -gtk-icontheme("go-previous-symbolic"); }

    &.right { -gtk-icon-source: -gtk-icontheme("go-next-symbolic"); }
  }
}

%list_button,
list > row button.image-button:not(.flat) {
  @extend %undecorated_button;
  border: 1px solid transparentize($borders_color, .5);
  &:hover { @include button(hover); }
  &:active,
  &:checked { @include button(active); }

  @each $b_type, $b_color in (suggested-action, $selected_bg_color),
                             (destructive-action, $destructive_color) {
    &.#{$b_type} { // allow colored buttons in lists #3643
      @include button(suggested_destructive, $b_color, white);
    }
  }
}

//
// Links
//
%links,
link,
button.link {
  color: $link_color;
  text-decoration: underline;
  font-weight: inherit;

  &:visited {
    color: $link_visited_color;
  }

  &:hover {
    color: hsl(hue($link_color), saturation($link_color) * 1.1, lightness($link_color) * 1.1);
  }

  &:active {
    color: $link_color;
  }

  &:disabled { color: gtkalpha(currentColor, 0.35); }

  @at-root %link_selected,
  &:selected {
    @if $gnome_version == 'old' {
      color: mix($selected_fg_color, $selected_bg_color, 80%);
    } @else {
      color: color-mix(in srgb, $selected_fg_color 80%, $selected_bg_color);
    }
  }
}

button.link {
  &, &:hover, &:active, &:checked {
    @extend %undecorated_button;
  }

  > label { text-decoration-line: underline; }
}

//
// Spinbuttons
//
spinbutton {
  background: none;
  min-height: $small_size;

  &:drop(active) { box-shadow: none; }

  &:disabled { color: $disabled_fg_color; }

  button:active { color: $selected_fg_color; }

  &:focus-within { outline: none; }

  > text {
    padding: $container_padding;
    @extend %Linked_entrys;
    border: 1px solid $dark_borders_color;
    background-clip: padding-box;

    > selection {
      background-color: $selected_bg_color;
      color: $selected_fg_color;
    }

    &:focus-within {
      outline: none;

      @if $variant == 'dark' { box-shadow: inset 0 0 0 2px $entry_highlight; }

      @if $variant == 'light' {
        border-color: $entry_highlight;
        box-shadow: 0 1px 1px 0 transparent, inset 0 0 0 1px $entry_highlight;
      }
    }

    &:drop(active) {
      outline: none;

      @if $variant == 'dark' { box-shadow: inset 0 0 0 2px $drop_target_color; }

      @if $variant == 'light' {
        border-color: $drop_target_color;
        box-shadow: 0 1px 1px 0 transparent, inset 0 0 0 1px $drop_target_color;
      }
    }
  }

  &:not(.vertical) {
    padding: 0;
    border-spacing: 0;

    > text {
      padding-top: 2px;
      padding-bottom: 2px;
      min-width: $menuitem_size;
      min-height: $small_size - 4px;
    }

    > button { min-height: $small_size; }

    > button, > text { @extend %linked; }

    &:dir(ltr) > text,
    &:dir(rtl) > button.up { border-radius: $bt_radius 0 0 $bt_radius; }

    > button + button { border-left-style: none; }

    > button:hover:not(:active),
    > button:hover + button { box-shadow: inset 1px 0 $button_border; }

    > button:disabled + button:not(:disabled):not(:active):not(:checked):not(:hover),
    > button:not(:disabled):not(:active):not(:checked):not(:hover) + button:disabled { box-shadow: inset 1px 0 transparentize($button_border, 0.5); }

    > button:first-child:hover:not(:active),
    > button.up:dir(rtl):hover:not(:active),
    > text + button:not(:active):hover { box-shadow: none; }

    @if $variant == 'light' {
      > text:focus-within + button { border-left-color: $entry_highlight; }
      > text:drop(active) + button { border-left-color: $drop_target_color; }
    }

    .osd & {
      &, &:focus-within, &:drop(active) { border-image: none; }
      > button:hover:not(:active),
      > button:hover + button { box-shadow: inset 1px 0 $osd_button_border; }

      > button:first-child:hover:not(:active),
      > button.up:dir(rtl):hover:not(:active),
      > text + button:not(:active):hover { box-shadow: none; }

      > text:focus-within + button { border-left-color: $entry_highlight; }
    }
  }

  &.vertical {
    > button, > text {
      padding-left: $container_padding - 2px;
      padding-right: $container_padding - 2px;
      min-width: 0;

      @extend %linked_vertical;
    }

    > button.up { border-radius: $bt_radius $bt_radius 0 0; }

    @if $variant == 'light' {
      > text:focus-within + button { border-top-color: $entry_highlight; }
      > text:drop(active) + button { border-top-color: $drop_target_color; }
    }
  }

  // Misc
  treeview &:not(.vertical),
  row &:not(.vertical) {
    min-height: 0;
    padding: 0 $container_padding / 2;
    border-style: none;
    border-radius: $bt_radius;
    background-color: rgba($fg_color, 0.08);

    &:focus, &:hover, &:selected { background-color: rgba($fg_color, 0.12); }

    &:focus-within {
      box-shadow: inset 0 0 0 2px $entry_highlight;
      transition: $shadow_transition;
    }

    > text {
      &, &:hover, &:focus {
        background: none;
        border: none;
        box-shadow: none;
      }
    }

    > button.up,
    > button.down {
      border: none;
      border-color: transparent;
      box-shadow: none;
      border-radius: 100px;
      min-height: 22px;
      min-width: 22px;
      padding: 0;
      margin: 4px 2px;
      background-color: transparent;

      &:hover { background-color: rgba($fg_color, 0.1); }
      &:active { background-color: rgba($fg_color, 0.15); color: $fg_color; }
    }

    > button:hover:not(:active),
    > button:hover + button { box-shadow: none; }

    > button:disabled + button:not(:disabled):not(:active):not(:checked):not(:hover),
    > button:not(:disabled):not(:active):not(:checked):not(:hover) + button:disabled { box-shadow: none; }

    > text:focus + button { border-left-color: transparent; }
    > text:drop(active) + button { border-left-color: transparent; }
  }

  font-feature-settings: "tnum";
}

//
// Comboboxes
//

dropdown > popover.menu.background > contents { padding: 0; }

dropdown > button > box {
  border-spacing: $container_padding;
}

dropdown,
combobox {
  min-height: $menuitem_size - 4px;

  button.combo {
    min-width: 0;       // otherwise the arrow placement is unsymmetric
    min-height: $menuitem_size - 4px;
    // margin: 0;
    padding-left: $container_padding * 2;
    padding-right: $container_padding * 2;
  }

  // align menu labels with the button label
  > popover.menu > contents modelbutton {
    padding-left: $container_padding + 4px;
    padding-right: $container_padding + 4px;
  }

  button.combo arrow {
    @include button(active);
    -gtk-icon-source: -gtk-scaled(
                       url("assets/combobox-arrow-dark.png"),
                       url("assets/combobox-arrow-dark@2.png"));
    min-height: 16px;
    min-width: $menuitem_size - 10px;
    padding: 0;
    margin: 2px (-$menuitem_size + 18px) 2px 0;
    border-radius: $bt_radius - 1px;
    border: none;

    @if $variant == 'dark' {
      box-shadow: inset 0 1px $button_highlight, 0 0 0 1px $dark_borders_color, 0 1px 2px 0 rgba(black, 0.05);
    }
  }

  .background & button.combo:disabled arrow,
  .background & button.combo:backdrop arrow {
    background-color: if($variant=='light', rgba(black, 0.35), rgba(white, 0.25));
  }

  button.combo:checked,
  .background & button.combo:checked { transition: none; } // workaround for menuitem selection

  &:drop(active) button.combo {
    color: $drop_target_color;
    border-color: $drop_target_color;
    box-shadow: none;
  }

  // newstyle
  popover {
   margin-top: $container_padding / 2;
   padding: 0;

    // drodowns with searchboxes on top
    .dropdown-searchbar {
      padding: $container_padding;
      border-bottom: 1px solid $borders_color;
    }
  }

  .linked:not(.vertical) > entry + button.combo,
  .linked:not(.vertical) > & > box > button.combo {
    arrow {
      background-color: transparent;
      box-shadow: none;
      -gtk-icon-source: -gtk-scaled(
                         url("assets/combobox-arrow#{$asset_suffix}.png"),
                         url("assets/combobox-arrow#{$asset_suffix}@2.png"));
    }

    &:checked, &:active {
      arrow {
        border-radius: 0;
        background-color: transparent;
        -gtk-icon-source: -gtk-scaled(
                           url("assets/combobox-arrow-dark.png"),
                           url("assets/combobox-arrow-dark@2.png"));
      }
    }
  }

  .linked:not(.vertical) > & > box > button.combo {
    // the combobox is a composite widget so the way we do button linking doesn't
    // work, special case needed.
    &:dir(ltr),
    &:dir(rtl) { @extend %linked_middle; } // specificity bump
  }

  .linked:not(.vertical) > &:first-child > box > button.combo {
    border-top-left-radius: $bt_radius;
    border-bottom-left-radius: $bt_radius;
  }

  .linked:not(.vertical) > &:last-child > box > button.combo {
    border-top-right-radius: $bt_radius;
    border-bottom-right-radius: $bt_radius;
    border-right: 1px solid $button_borders;
  }

  .linked:not(.vertical) > &:only-child > box > button.combo {
    border-radius: $bt_radius;
  }

  // .linked.vertical > & > box > button.combo { @extend %linked_vertical_middle; }
  .linked.vertical > &:first-child > box > button.combo {
    border-top-left-radius: $bt_radius;
    border-top-right-radius: $bt_radius;
  }

  .linked.vertical > &:last-child > box > button.combo {
    border-bottom-left-radius: $bt_radius;
    border-bottom-right-radius: $bt_radius;
  }

  .linked.vertical > &:only-child > box > button.combo {
    border-radius: $bt_radius;
  }
}

//
// Toolbars
//

.toolbar {
  padding: $container_padding;
  border-spacing: $container_padding;
  background-color: $bg_color;
  color: $text_color;

  separator { background: none; }

  &.horizontal separator { margin: 0 $container_padding; }
  &.vertical separator { margin: $container_padding 0; }

  // oldstyle toolbar buttons
  > button {
    @extend %flat_button;
  }

  .osd & { background-color: transparent; }

  &.osd {
    padding: $container_padding;
    border: none;
    border-radius: $bt_radius + 4px;
    background-color: $osd_bg_color;
    box-shadow: $shadow_4;

    scalebutton {
      margin: 0;
    }

    &.left,
    &.right,
    &.top,
    &.bottom { border-radius: 0; } // positional classes for `attached` osd toolbars

    &.top { border-width: 0 0 1px 0; }
    &.bottom { border-width: 1px 0 0 0; }
    &.left { border-width: 0 1px 0 0; }
    &.right { border-width: 0 0 0 1px; }
  }
}

searchbar {
  > revealer > box {
    padding: $container_padding;
    border-spacing: $container_padding;
  }

  &:not(.inline) > revealer > box {
    border-style: solid;
    border-color: $solid_borders_color;
    background-color: $header_bg;
    border-width: 0 0 1px;
    box-shadow: none;
    color: $header_fg;
  }

  // Close button on searchbar
  button.flat, .close {
    min-width: 18px;
    min-height: 18px;
    padding: 4px;
    border-radius: 50%;
  }

  .top-bar &:not(.inline) > revealer > box,
  .bottom-bar &:not(.inline) > revealer > box {
    background-color: transparent;
  }
}

actionbar > revealer > box {
  padding: $container_padding;
  border-spacing: $container_padding;
  border-top: 1px solid $borders_color;
  background-color: darken($bg_color, 3%);
  box-shadow: none;
  color: $text_color;

  &, > box.start, > box.end {
    border-spacing: $container_padding;
  }

  &:backdrop {
    background-color: $bg_color;

    > * {
      filter: opacity(.5);
    }
  }
}

%actionbar-inline > revealer > box {
  background-color: transparent;
  color: inherit;
  box-shadow: none;
  padding-top: $container_padding;

  &:backdrop {
    background-color: transparent;
    transition: none;

    > * {
      filter: none;
      transition: none;
    }
  }
}

//
// Headerbars
//

%header_separator {
  min-width: 0;
  min-height: 0;
  background-color: transparent;
  border: none;

  &:backdrop { opacity: 0.65; }
}

// Headerbar Entries
%headerbar_entrys {
  // min-height: $menuitem_size - 6px;
  @include entry(header-normal);

  &:backdrop { opacity: 0.65; background-image: none; }

  &:hover {
    @include entry(header-hover);
  }

  &:focus {
    @include entry(header-focus);
  }

  &:disabled {
    opacity: 1;
    @include entry(header-insensitive);
  }

  selection:focus {
    background-color: $selected_bg_color;
    color: $selected_fg_color;
  }

  progress {
    border-color: $progress_color;
    background-image: none;
    background-color: transparent;
  }

  @each $e_type, $e_color, $e_fg_color in (warning, $warning_color, $light_fg_color),
                                          (error, $error_color, $light_fg_color) {
    &.#{$e_type} {
      color: $e_fg_color;
      border-color: if($variant=='light', $e_color, $entry_border);
      background-color: mix($e_color, $header_bg, 60%);

      &:focus {
        color: $e_fg_color;
        background-color: $e_color;
      }

      selection, selection:focus {
        background-color: $e_fg_color;
        color: $e_color;
      }
    }
  }
}

// Headerbar Buttons
%headerbar_buttons {
  @include button(header-normal);

  &:backdrop { opacity: 0.65; background-image: none; }

  &:hover {
    @include button(header-hover);
    transition: $button_transition;
  }

  &:active {
    @include button(header-active);
    transition: $button_transition;
    transition-duration: 300ms;
  }

  &:checked {
    @include button(header-checked);
    transition: $button_transition;
    transition-duration: 300ms;

    &:hover { background-image: none; }
  }

  &:disabled {
    opacity: 1;
    &, &:checked, &:active { @include button(header-insensitive); }
  }

  &.flat {
    @include button(undecorated);
  }
}

headerbar {
  min-height: $headerbar_size;
  padding: 0;
  margin: 0;
  color: $header_fg;
  background-color: $header_bg;
  border-bottom: 1px solid $header_border;
  box-shadow: none;

  &:backdrop {
    opacity: 1;
    transition: $backdrop_transition;
    color: transparentize($header_fg, 0.3);
    background-color: $header_bg_backdrop;
    border-color: if($variant=='light', lighten($header_border, 5%), darken($header_border, 3%));
    box-shadow: none;
  }

  &.flat {
    &, &:backdrop {
      border: none;
      background: none;
    }

    windowcontrols {
      padding: 0 $container_padding / 2;
    }
  }

  .title {
    padding: 2px $container_padding * 2;
  }

  .subtitle {
    font-size: smaller;
    padding: 2px $container_padding * 2;
    margin-top: -3px;
    @extend %dim-label;
  }

  > windowhandle > box {
    padding: 0 8px;
    margin-top: 8px;
    margin-bottom: 8px;

    &,
    > box.start,
    > box.end {
      border-spacing: $container_padding;
    }

    &, > widget {
      > box.start:dir(ltr),
      > box.end:dir(rtl) {
        margin-right: $container_padding;
      }

      > box.start:dir(rtl),
      > box.end:dir(ltr) {
        margin-left: $container_padding;
      }
    }
  }

  entry {
    @extend %headerbar_entrys;
    border-spacing: 4px;
  }

  button {
    @extend %headerbar_buttons;

    &.star {
      min-width: 24px;
      padding: 2px;
      border-radius: $circular_radius;
    }
  }

  // Reset linked buttons
  .linked.raised > & {
    // min-width: 16px;
    border-radius: $bt_radius;
    border: none;
    box-shadow: none;

    &:disabled { background: none; }
  }

  stackswitcher.linked:not(.vertical) > button {
    min-width: $menuitem_size - 4px;
    border-radius: $bt_radius;
  }

  // Reset linking entrys
  .linked:not(.vertical) > entry {
    @include entry(header-normal);
    padding: 0 $container_padding * 2;
    border: none;

    &:focus {
      @include entry(header-focus);
    }

    &:disabled {
      @include entry(header-insensitive);
    }

    &:backdrop { opacity: 0.65; background-image: none; }
  }

  stackswitcher {
    box-shadow: inset 0 0 0 1px $light_borders_color;
    border-radius: $bt_radius;
    padding: 0;

    > button {
      font-weight: 500;

      &:not(:first-child) {
        border-width: 0 0 0 1px;
        border-style: none solid none none;
        border-radius: 0;
        border-image: linear-gradient(to bottom,
                                      transparent 16%,
                                      $light_borders_color 16%,
                                      $light_borders_color 84%,
                                      transparent 84%) 0 0 0 1 / 0 0 0 1px stretch;
      }

       &:hover, &:active, &:checked {
        border-image: none;
      }
    }

    button:hover + button,
    button:active + button,
    button:checked + button { border-image: none; }
  }

  // Headerbar Switches
  switch {
    // margin-top: ($headerbar_size - 24px) / 2;
    // margin-bottom: ($headerbar_size - 24px) / 2;

    &:backdrop { opacity: 0.75; }
  }

  &.titlebar headerbar:not(.titlebar) {
    background: none;
    box-shadow: none;
  }

  windowhandle {
    box.linked > button {
      background-color: $fill_color;

      &:hover { background-color: $divider_color; }

      &:active { background-color: $track_color; }

      &:checked { background-color: $visit_color; }
    }
  }

  // Selectionmode
  .selection-mode &,
  &.selection-mode {
    color: $light_fg_color;
    background-color: $selection_mode_bg;
    box-shadow: none;
    background-image: none;
    text-shadow: none;

    @if $gnome_version == 'old' {
      border-color: darken($selection_mode_bg, 5%);
    } @else {
      border-color: color-mix(in srgb, black 15%, $selection_mode_bg)
    }

    &:backdrop {
      background-color: $selection_mode_bg;
      color: transparentize($light_fg_color, 0.4);

      @if $gnome_version == 'old' {
        border-color: darken($selection_mode_bg, 5%);
      } @else {
        border-color: color-mix(in srgb, black 15%, $selection_mode_bg)
      }
    }

    button {
      @include button(undecorated);
      @extend %selected-button;
    }

    .subtitle:link { @extend %link_selected;  }

    .selection-menu {
      box-shadow: none;
      padding-left: 10px;
      padding-right: 10px;

      .arrow {
        -gtk-icon-source: -gtk-icontheme('pan-down-symbolic');
      }
    }

    .maximized & { background-color: $selection_mode_bg; }
  }

  .tiled &, .tiled &:backdrop,
  .maximized &, .maximized &:backdrop {
    border-radius: $maximized_radius $maximized_radius 0 0; // squared corners when the window is max'd or tiled
    box-shadow: none;
  }

  .maximized & {
    background-color: $header_bg;
    border-color: opacify($header_border, 1);
    box-shadow: none;

    &:backdrop {
      background-color: $header_bg_backdrop;
      border-color: if($variant=='light', lighten($header_border, 15%), darken($header_border, 3%));
    }

    &.flat {
      &, &:backdrop {
        border: none;
        background: none;
      }
    }
  }

  separator.titlebutton { @extend %header_separator; }

  // Titlebuttons
  windowcontrols {
    border-spacing: $container_padding;
    padding: 0 10px;
  
    &:not(.empty) {
      &.start:dir(ltr),
      &.end:dir(rtl) {
        margin-right: $container_padding + 2px;
      }
  
      &.start:dir(rtl),
      &.end:dir(ltr) {
        margin-left: $container_padding + 2px;
      }
    }
  
    headerbar.titlebar & {
      border-spacing: $container_padding;
    }
  
    button {
      > image {
        padding: 0;
        margin: 0;
        background-color: transparent;
        background-image: none;
      }
  
      &.close, &.maximize, &.minimize {
        min-width: 16px;
        min-height: 16px;
        padding: ($menuitem_size - 20px) / 2 1px;
        background-position: center;
        background-repeat: no-repeat;
        background-size: 16px 16px;
  
        &, &:hover, &:focus, &:active, &:backdrop {
          @include button(undecorated);
          color: transparent;
        }
  
        &:backdrop { opacity: 1; }
      }
  
      // Load png assets for each button, Fix the Chrome window restore button bug
      @each $k in ('close', 'maximize', 'minimize') {
        @each $l, $m in ('',''), (':backdrop','-backdrop'), (':backdrop:hover','-backdrop-hover'), (':hover','-hover'), (':active','-active') {
          &.#{$k}#{$l} {
            background-image: -gtk-scaled(url('windows-assets/titlebutton-#{$k}#{$m}#{$asset_suffix}.png'),
                                          url('windows-assets/titlebutton-#{$k}#{$m}#{$asset_suffix}@2.png'));
          }
        }
      }
    }
  }

  .fullscreen & windowcontrols,
  .maximized & windowcontrols {
    button {
      @each $l, $m in ('',''), (':backdrop','-backdrop'), (':backdrop:hover','-backdrop-hover'), (':hover','-hover'), (':active','-active') {
        &.maximize#{$l} {
          background-image: -gtk-scaled(url('windows-assets/titlebutton-restore#{$m}#{$asset_suffix}.png'),
                                        url('windows-assets/titlebutton-restore#{$m}#{$asset_suffix}@2.png'));
        }
      }
    }
  }

  &.default-decoration {
    min-height: $medium_size;
    padding: 0;
    background-color: $header_bg;
    border: none;
    box-shadow: none;

    > windowhandle > box {
      padding: 0 $container_padding / 2;
    }

    .tiled &,
    .maximized &,
    .fullscreen & { box-shadow: none; }

    windowcontrols {
      button,
      menubutton {
        border: none;
        min-width: 16px;
        min-height: 16px;
        margin: 0;
        padding: 0;
      }

      menubutton button {
        min-height: 20px;
        min-width: 20px;
        margin: 0;
        padding: $container_padding - 2px;
      }

      button.close, button.maximize, button.minimize {
        min-width: 16px;
        min-height: 16px;
        margin: 0 1px;
        padding: 0;
      }
    }
  }
}

.titlebar {
  > box.left.horizontal,
  > box.right.horizontal {
    padding: 0 $container_padding;
  }
}

// Fixes split headerbars too
.titlebar:not(headerbar) {
  window > &,
  window.csd > & {
    &, &:backdrop {
      padding: 0;
      background: none;
      border: none;
      box-shadow: none;
    }
  }

  > separator {
    min-width: 1px;
    @extend %side_separator;
  }
}

//
// Pathbars
//

$pathbar_button_checked_bg: if($variant == 'light', #808080, #b8b8b8);

pathbar > button {
  min-width: $container_padding * 2;
  min-height: if($variant == 'light', 24px, 26px);

  &.text-button, &.image-button, & {
    padding-left: $container_padding;
    padding-right: $container_padding;
  }

  &:hover { box-shadow: none; }

  &:active, &:checked {
    background-color: $pathbar_button_checked_bg;
    color: if($variant == 'light', rgba(white, 1), rgba(black, 0.75));
    border-color: $button_borders;
  }

  &:disabled {
    border-color: $button_borders;
  }

  &.text-button.image-button label { padding-left: 0; padding-right: 0; }

  &.text-button.image-button, & {
    label:last-child { padding-right: $container_padding + 4px; }
    label:first-child { padding-left: $container_padding + 4px; }
  }

  &.slider-button,
  &:not(.image-button):not(.text-button) {
    padding-left: 1px;
    padding-right: 1px;
  }

  image {
    padding-left: $container_padding;
    padding-right: $container_padding;
  }
}

//
// Tree Views
//
columnview.view,
treeview.view {
  border-left-color: $solid_borders_color; // this is actually the tree lines color,
  border-top-color: $solid_borders_color; // while this is the grid lines color, better then nothing

  > rubberband { @extend %rubberband; } // to avoid borders being overridden by the previously set props

  acceleditor > label { background-color: $selected_bg_color; }

  &:selected {
    &, &:focus {
      border-radius: 0;
      @extend %selected_items;
    }
  }

  &:disabled {
    color: $disabled_fg_color;

    &:selected {
      color: rgba($selected_fg_color, 0.45);
    }
  }

  &.separator {
    min-height: 2px;
    color: $borders_color;
  }

  > dndtarget:drop(active) {
    border-style: solid none;
    border-width: 1px;
    border-color: $drop_target_color;

    &.after { border-top-style: none; }

    &.before { border-bottom-style: none; }
  }

  &.expander {
    min-width: 16px;
    min-height: 16px;
    -gtk-icon-source: -gtk-icontheme('pan-end-symbolic');

    &:dir(rtl) { -gtk-icon-source: -gtk-icontheme('pan-end-symbolic-rtl'); }

    color: $alt_fg_color;

    &:hover { color: $fg_color; }

    &:checked { -gtk-icon-source: -gtk-icontheme('pan-down-symbolic'); }

    &:disabled { color: $alt_disabled_fg_color; }
  }

  &.progressbar { // progress bar in treeviews
    color: $selected_fg_color;
    border-radius: $bt_radius;
    background-color: $progress_color;

    &:selected, &:selected:focus {
      color: $selected_bg_color;
      box-shadow: none;
      background-color: $selected_fg_color;
    }
  }

  &.trough { // progress bar trough in treeviews
    color: $fg_color;
    background-color: $button_border;
    border-radius: $bt_radius;
    border-width: 0;

    &:selected, &:selected:focus {
      color: $selected_fg_color;
      background-color: transparentize(black, 0.8);
      border-radius: $bt_radius;
      border-width: 0;
    }
  }

  > header {
    > button {
      $_column_header_color: mix($fg_color,$base_color,80%);

      min-height: if($variant =='light', 24px, 26px);
      min-width: 38px;
      padding: 0 $container_padding;
      font-weight: bold;

      color: $_column_header_color;
      background-color: $base_color;
      background-image: none;
      box-shadow: none;
      border-style: none solid none none;
      border-radius: 0;
      border-image: linear-gradient(to bottom,
                                    $base_color 20%,
                                    transparentize(if($variant == 'light', black, white), 0.89) 20%,
                                    transparentize(if($variant == 'light', black, white), 0.89) 80%,
                                    $base_color 80%) 0 1 0 0 / 0 1px 0 0 stretch;

      &:hover { color: $selected_bg_color; }
      &:active { color: $fg_color; }

      &:active, &:hover { background-color: $base_color; }

      &:disabled {
        border-color: $bg_color;
        background-image: none;
      }

      &:last-child {
        border-right-style: none;
        border-image: none;
      }
    }
  }

  button.dnd,
  header.button.dnd {
    &, &:selected, &:hover, &:active {
      padding: 0 $container_padding;
      transition: none;
      color: $selected_fg_color;
      background-color: $selected_bg_color;
      border-radius: 0;
      border-style: none;
    }
  }
}

treeview.navigation-sidebar {
  padding: 0;
}

//
// Menus
//

menubar {
  padding: 0;
  background-color: $header_bg;
  color: $header_fg;
  box-shadow: inset 0 -1px $borders_color;

  &:backdrop {
    color: transparentize($header_fg, 0.2);
    // background-image: none;
    // background-color: opacify($header_bg_backdrop, 1);
  }

  > item {
    transition: all 0.2s cubic-bezier(0.0, 0.0, 0.2, 1);
    padding: ($container_padding - 2px) $container_padding;
    border: none;
    border-radius: $bt_radius / 2;

    &:hover { //Seems like it :hover even with keyboard focus
      transition: none;
      @include button(header-hover);
    }

    &:disabled {
      color: transparentize($header_fg, 0.6);
    }
  }

  & > item popover.menu.background > contents {
    padding: $container_padding;
    border-radius: $mn_radius;
  }

  //nested submenus
  & > item popover.menu popover.menu {
    padding: 0 0 $container_padding 0;
  }

  & > item popover.menu.background popover.menu.background > contents {
    margin: 0;
    border-radius: $mn_radius; //including top
  }
}

//
// Popovers
//
popover {
  &.background {
    background-color: transparent;
    font: initial;
  }

  > arrow,
  > contents {
    color: $fg_color;
    background-clip: padding-box;
    background-color: $menu_bg;
    box-shadow: 0 3px 6px 0 if($variant=='light', transparentize(black, 0.85), transparentize(black, 0.85)),
                0 0 0 1px if($variant=='light', rgba($borders_color, 0.03), rgba($dark_borders_color, 0.55));
    border: 1px solid if($variant=='light', rgba($borders_color, 0.2), lighten($menu_bg, 6%));
  }

  &, &:backdrop {
    background-color: transparent;
  }

  > contents {
    padding: $container_padding;
    border-radius: $mn_radius;

    list,
    .view,
    > toolbar {
      border: none;
      background-color: transparent;
    }

    separator {
      background-color: $menu_bd;
      margin: $container_padding / 2;
    }

    > scrolledwindow > viewport > stack > box {
      padding: 0;
    }

    stack scrolledwindow:not(.view) > viewport {
      border: 1px solid $borders_color;
      border-radius: $bt_radius;
      background-color: $base_color;
    }

    listview {
      padding: 0;
      margin: 0;

      > row {
        padding: $container_padding $container_padding * 2;
        margin: 0;

        &:selected {
          color: $selected_fg_color;
          background-color: $selected_bg_color;
        }
      }
    }
  }

  entry {
    background-color: mix($fg_color, $menu_bg, 5%);
  }

  .osd &,
  &.touch-selection,
  &.magnifier {
    background-color: transparent;

    > arrow,
    > contents {
      @extend %osd;

      border: none;
      box-shadow: 0 3px 8px 0 rgba(black, 0.35);
    }
  }

  &.touch-selection,
  &.magnifier {
    button { @extend %osd_button; }
  }
}

//touch selection handlebars for the Popover.osd above
cursor-handle {
  background-color: transparent;
  background-image: none;
  box-shadow: none;
  border-style: none;
  &.top { -gtk-icon-source: -gtk-icontheme('selection-start-symbolic'); }
  &.bottom { -gtk-icon-source: -gtk-icontheme('selection-end-symbolic'); }
}

//
// Popover Base Menus
//

popover.menu {
  padding: 0;

  box.inline-buttons {
    padding: 0 $container_padding;

    button.image-button.model {
      @include button(undecorated);
      min-height: $menuitem_size;
      min-width: $menuitem_size;
      padding: 0;
      border: none;
      outline: none;
      transition: none;

      &:selected {
        color: $selected_fg_color;
        background-image: image($selected_bg_color);
      }
    }
  }

  box.circular-buttons {
    padding: $container_padding;

    button.circular.image-button.model {
      @extend %list_button;
      padding: $container_padding;
      border: none;

      &:focus {
        background-color: $light_borders_color;
      }

      &:active:focus {
        color: $selected_fg_color;
        background-color: $selected_bg_color;
      }
    }
  }

  & > arrow,
  &.background > contents {
    background-color: $menu_bg;
    color: $fg_color;
  }

  &.background separator {
    margin: $container_padding 0;
  }

  accelerator {
    color: gtkalpha(currentColor, 0.55);

    &:dir(ltr) { margin-left: $container_padding; }
    &:dir(rtl) { margin-right: $container_padding; }
  }

  arrow.left,
  radio.left,
  check.left {
    margin-left: 4px - $container_padding;
    margin-right: $container_padding;
  }

  arrow.right,
  radio.right,
  check.right {
    margin-left: $container_padding;
    margin-right: 4px - $container_padding;
  }

  modelbutton {
    min-height: $menuitem_size - $container_padding;
    min-width: $large_size * 2;
    padding: $container_padding / 3 $container_padding;
    border-radius: $bt_radius;
    transition: none;
    color: $text_color;

    &:focus {
      background-color: transparent;
      color: $fg_color;
      box-shadow: inset 0 0 0 2px rgba($fg_color, 0.06);
      transition: none;
    }

    &:hover {
      color: $selected_fg_color;
      background-color: $selected_bg_color;
      transition: background-color 50ms $deceleration_curve;

      arrow { color: $selected_fg_color; }
    }

    &:hover:focus {
      color: $selected_fg_color;
      background-color: $selected_bg_color;
      box-shadow: none;
    }

    &:selected:active {
      color: $selected_fg_color;
      transition: background-color $shorter_duration $deceleration_curve;

      @if $gnome_version == 'old' {
        background-color: darken($selected_bg_color, 5%);
      } @else {
        background-color: color-mix(in srgb, black 10%, $selected_bg_color);
      }
    }
  }

  label.title {
    font-weight: bold;
    padding: $container_padding / 2 ($container_padding + 20px); //this will fall apart with font sizing
  }
}

//
// Notebooks and Tabs
//

%tabs_tab {
  color: $disabled_fg_color;
  background-color: transparentize($base_color, 1);
  border: 1px solid transparent;
  transition: all 150ms ease-out;
  border-radius: 0;
  padding: $container_padding - 4px $container_padding + 4px;
  margin: 0;
  box-shadow: none;

  &:hover:not(:checked):not(:selected) {
    color: mix($fg_color, $disabled_fg_color, 50%);
    background-color: if($variant == 'light', rgba(white, 0.2), rgba(white, 0.05));
    border-color: if($variant == 'light', darken($header_bg, 15%), lighten($header_bg, 5%));
    box-shadow: none;
  }

  &:checked, &:selected {
    color: $fg_color;
    background-color: $header_bg;
    border-color: if($variant == 'light', darken($header_bg, 15%), lighten($header_bg, 5%));
    box-shadow: none;
  }
}

%monterey_tab {
  color: $disabled_fg_color;
  background-color: transparentize($base_color, 1);
  border: none;
  transition: all 150ms ease-out;
  border-radius: $bt_radius;
  padding: $container_padding - 4px $container_padding + 4px;
  margin: 0;
  box-shadow: none;

  &:hover:not(:checked):not(:selected){
    color: mix($fg_color, $disabled_fg_color, 50%);
    background-color: rgba($fg_color, 0.06);
    box-shadow: none;
  }

  &:checked, &:selected {
    color: $fg_color;
    background-color: rgba($fg_color, 0.12);
    box-shadow: none;
  }
}

notebook {
  padding: 0;

  &.frame { border: 1px solid $solid_borders_color; }

  > stack:not(:only-child) { // the :not(:only-child) is for "hidden" notebooks
    background-color: $base_color;
  }

  > header {
    @if $monterey == 'false' {
      background-color: darken($header_bg, 10%);
      border: none;

      // Set box-shadow to make the header frame color more easy to see
      // Set margin to hide the ugly borders around the header
      &.top {
        box-shadow: inset 0 1px $borders_color, inset 0 -1px $borders_color;
      }

      &.bottom {
        box-shadow: inset 0 1px $borders_color, inset 0 -1px $borders_color;
      }

      &.right {
        box-shadow: inset 1px 0 $borders_color, inset -1px 0 $borders_color;
      }

      &.left {
        box-shadow: inset 1px 0 $borders_color, inset -1px 0 $borders_color;
      }
    } @else {
      &.top {
        border-bottom: 1px solid $borders_color;
      }

      &.bottom {
        border-top: 1px solid $borders_color;
      }

      &.right {
        border-left: 1px solid $borders_color;
      }

      &.left {
        border-right: 1px solid $borders_color;
      }
    }

    button.flat.toggle.popup {
      min-width: $medium_size;
      border: none;
      box-shadow: none;
      border-radius: $bt_radius;
      padding: 0 $container_padding / 2;

      @if $monterey == 'true' {
        margin-top: -2px;
        margin-bottom: -2px;
        margin-left: $container_padding / 2;
      }

      &:active, &:checked {
        color: $fg_color;
        background-color: if($variant=='light', rgba(black, 0.20), rgba(white, 0.15));
      }
    }

    @each $_pos, $_bpos in (top, bottom), (bottom, top), (right, left), (left, right) {
      // sizing and borders
      &.#{$_pos} {
        @if $monterey == 'false' {
          margin-#{$_pos}: -1px;
          padding: 0;
        } @else {
          padding: $container_padding / 2;
        }

        > tabs {
          margin: 0;
          padding: 0;

          > tab {
            outline-offset: -4px;
            min-width: 24px;
            min-height: 24px;

            @if $monterey == 'false' {
              // tab overlap
              + tab {
                @if $_pos==top or $_pos==bottom { margin-left: -1px; }
                @else { margin-top: -1px; }
              }
            } @else {
              + tab {
                @if $_pos==top or $_pos==bottom { margin-left: $container_padding / 2; }
                @else { margin-top: $container_padding / 2; }
              }
            }
          }
        }
      }
    }

    // overflow arrows
    &.top, &.bottom {
      > tabs > arrow.up {
        -gtk-icon-source: -gtk-icontheme('pan-end-symbolic');
        &:last-child { margin-left: 2px; }
      }

      > tabs > arrow.down {
        -gtk-icon-source: -gtk-icontheme('pan-start-symbolic');
        &:first-child { margin-right: 2px; }
      }
    }

    &.left, &.right {
      > tabs > arrow.up {
        -gtk-icon-source: -gtk-icontheme('pan-down-symbolic');
        &:last-child { margin-top: 2px; }
      }

      > tabs > arrow.down {
        -gtk-icon-source: -gtk-icontheme('pan-up-symbolic');
        &:first-child { margin-bottom: 2px; }
      }
    }

    > tabs > arrow {
      color: $disabled_fg_color;

      &:hover { color: mix($fg_color, $disabled_fg_color, 50%); }
      &:active { color: $fg_color; }
      &:disabled { color: transparentize($disabled_fg_color,0.3); }
    }

    @if $monterey == 'false' {
      &.top,
      &.bottom {
        > tabs > tab {
          &:first-child { border-left: none; }
          &:last-child { border-right: none; }
        }
      }

      &.left,
      &.right {
        > tabs > tab {
          &:first-child { border-top: none; }
          &:last-child { border-bottom: none; }
        }
      }
    }

    > tabs > tab {
      @if $monterey == 'false' {
        @extend %tabs_tab;
      } @else {
        @extend %monterey_tab;
      }

      // close button
      button.flat,
      button.close-button,
      button.image-button.flat {
        border: none;
        box-shadow: none;
        border-radius: 3px;
        padding: 0;
        color: $alt_fg_color;
        min-height: 16px;
        min-width: 16px;
        margin-top: 4px;
        margin-bottom: 4px;
        margin-left: $container_padding / 2;
        margin-right: -$container_padding / 2;

        &:hover {
          color: $fg_color;
          background-color: rgba($fg_color, 0.1);
        }

        &:active {
          color: if($variant == 'light', darken($fg_color, 10%), lighten($fg_color, 10%));
          background-color: rgba($fg_color, 0.2);
        }
      }
    }
  }
}

//
// Scrollbars
//
$_scrollbar_bg_color: if($variant == 'light', darken($base_color, 1%), lighten($base_color, 1%));

scrollbar {
  $_slider_min_length: 40px;

  background-color: transparent;
  transition: 300ms $ease-out-quad;
  outline: none;

  &, button { border: none; }

  &.vertical button {
    &.down { -gtk-icon-source: -gtk-icontheme('pan-down-symbolic'); }
    &.up { -gtk-icon-source: -gtk-icontheme('pan-up-symbolic'); }
  }

  &.horizontal button {
    &.down { -gtk-icon-source: -gtk-icontheme('pan-right-symbolic'); }
    &.up { -gtk-icon-source: -gtk-icontheme('pan-left-symbolic'); }
  }

  // slider
  > range > trough {
    background: none;
    padding: 0;
    margin: 0;
    border: none;
    outline: none;
    transition: none;

    > slider {
      min-width: $container_padding + 2px;
      min-height: $container_padding + 2px;
      margin: 0;
      border: 4px solid transparent;
      border-radius: $container_padding * 2;
      background-clip: padding-box;
      background-color: mix($fg_color, $bg_color, 40%);
      box-shadow: none;
      outline: none;
      transition: all 200ms linear;

      &:hover { background-color: mix($fg_color, $bg_color, 30%); }
      &:hover:active { background-color: mix($fg_color, $bg_color, 50%); }
      &:disabled { background-color: transparent; }
    }
  }

  > range.fine-tune {
    > trough > slider {
      min-width: $container_padding - 2px;
      min-height: $container_padding - 2px;
    }

    &.horizontal > trough > slider { border-width: 5px 4px; }
    &.vertical > trough > slider { border-width: 4px 5px; }
  }

  &.overlay-indicator {
    background: none;
    color: inherit;
    box-shadow: none;
    padding: 0;

    > range > trough {
      outline: none;
      background: none;

      > slider {
        outline: none;
      }
    }

    &:not(.dragging):not(.hovering) {
      opacity: 0.4;
      border-color: transparent;
      background-color: transparent;
      box-shadow: none;

      > range > trough > slider {
        margin: $container_padding / 2;
        min-width: $container_padding - 2px;
        min-height: $container_padding - 2px;
        background-color: mix($fg_color, $bg_color, 70%);
        border: none;
      }

      &.horizontal > range > trough > slider {
        min-width: $_slider_min_length;
      }

      &.vertical > range > trough > slider {
        min-height: $_slider_min_length;
      }
    }

    &.dragging,
    &.hovering { opacity: 1; }
  }

  &.horizontal > range > trough > slider { min-width: $_slider_min_length; }
  &.vertical > range > trough > slider { min-height: $_slider_min_length; }
}

// treeview ~ scrollbar.vertical {
//   border-top: 1px solid $borders_color;
//   margin-top: -1px;
// }

//
// Switches
//

$switch_image: linear-gradient(0deg, rgba($fg_color, 0.25) 0%, rgba($fg_color, 0.35) 100%);
$switch_disabled_image: linear-gradient(0deg, rgba($fg_color, 0.1) 0%, rgba($fg_color, 0.15) 100%);
$switch_checked_backdrop_image: linear-gradient(0deg, rgba($fg_color, 0.45) 0%, rgba($fg_color, 0.55) 100%);

$switch_checked_image: '';
$switch_checked_disabled_image: '';

@if $gnome_version == 'old' {
  $switch_checked_image: linear-gradient(0deg, lighten($selected_bg_color, 10%) 0%, $selected_bg_color 100%);
  $switch_checked_disabled_image: linear-gradient(0deg, lighten($selected_bg_color, 35%) 0%, lighten($selected_bg_color, 25%) 100%);
} @else {
  $switch_checked_image: linear-gradient(0deg, color-mix(in srgb, white 25%, $selected_bg_color) 0%, color-mix(in srgb, black 10%, $selected_bg_color) 100%);
  $switch_checked_disabled_image: linear-gradient(0deg, color-mix(in srgb, white 35%, $selected_bg_color) 0%, color-mix(in srgb, white 25%, $selected_bg_color) 100%);
}

$switch_animation: switch_ripple_effect 0.1s cubic-bezier(0, 0, 0.2, 1);

@keyframes switch_ripple_effect {
  from {
    background-image: $switch_image, radial-gradient(circle farthest-corner at center,
                                      transparent 0%,
                                      transparent 0%);
  }

  to {
    background-image: $switch_checked_image, radial-gradient(circle farthest-corner at center,
                                      rgba($selected_bg_color, 0.75) 100%,
                                      transparent 0%);
  }
}

switch {
  transition: $longer_transition;
  border-radius: $circular_radius;
  background-color: transparent;
  background-clip: padding-box;
  color: transparent;
  min-width: 32px;
  min-height: 20px;
  font-size: 0;
  padding: 0;
  box-shadow: inset 0 1px 2px rgba(black, 0.1);

  @if $gnome_version == 'old' {
    background-image: $switch_image, radial-gradient(circle farthest-corner at center, transparent 0%, transparent 0%); 
  } @else {
    background-image: $switch_image;
  }

  &:disabled {
    color: transparent;
    background-color: transparent;
    background-image: $switch_disabled_image;
  }

  &:checked {
    animation: $switch_animation;
    background-color: transparent;
    color: transparent;
    box-shadow: inset 0 1px 2px rgba(black, 0.15);
    transition: background-image 0.1s, box-shadow 0;

    @if $gnome_version == 'old' {
      background-image: $switch_checked_image, radial-gradient(circle farthest-corner at center, rgba($selected_bg_color, 0.75) 100%, transparent 0%);
    } @else {
      background-image: $switch_checked_image;
    }

    &:disabled {
      background-color: transparent;
      background-image: $switch_checked_disabled_image;
      color: transparent;
    }

    &:backdrop {
      background-color: transparent;
      background-image: $switch_checked_backdrop_image;
      color: transparent;
    }
  }

  > slider {
    transition: $longer_transition, $shadow_transition, margin 0;
    min-width: 18px;
    min-height: 18px;
    margin: 1px 0 1px 1px;
    padding: 0;
    border-radius: $circular_radius;
    background-color: white;
    box-shadow: 0 1px 2px rgba(black, 0.15);
  }

  &, > slider {
    outline-color: transparent;
    color: transparent;
    border: none;
  }

  &:hover > slider { box-shadow: $shadow_5; }

  &:checked > slider {
    margin: 1px 1px 1px 0;
    background-color: $selected_fg_color;
  }

  &:disabled > slider { @include entry(disabled); }

  &:checked:disabled > slider { animation: none; }
}

//
// Check and Radio items
//
.view.content-view.check:not(list),
.content-view .tile check:not(list) {
  min-height: 40px;
  min-width: 40px;
  margin: 0;
  padding: 0;
}

checkbutton, radiobutton {
  padding: 2px 0;

  // this is for a nice focus on check and radios text
  &.text-button {
    padding: 2px 0;
    outline-offset: 0;

    &:hover { color: darken($fg_color, 15%); }
    &:disabled { color: $disabled_fg_color; }
  }

  label:not(:only-child) {
    &:first-child { margin-left: 4px; }
    &:last-child { margin-right: 4px; }
  }
}

$check_radio_border: if($variant == 'light', rgba(black, 0.2), rgba(black, 0.1));
$check_radio_image: linear-gradient(0deg, #6a6a6a 0%, #545454 100%);
$check_radio_checked_image: '';

@if $gnome_version == 'old' {
  $check_radio_checked_image: linear-gradient(0deg, darken($selected_bg_color, 5%) 0%, lighten($selected_bg_color, 5%) 100%);
} @else {
  $check_radio_checked_image: linear-gradient(0deg, color-mix(in srgb, black 5%, $selected_bg_color) 0%, color-mix(in srgb, white 5%, $selected_bg_color) 100%);
}

check,
radio {
  min-width: 14px;
  min-height: 14px;
  margin: 3px;
  padding: 0;
  color: transparent;
  background-color: $base_color;
  transition: $button_transition;
  background-clip: padding-box;
  border: none;
  -gtk-icon-size: 14px;

  @if $variant == 'dark' {
    background-image: $check_radio_image;
    box-shadow: inset 0 1px $highlight_color, 0 1px 2px rgba(black, 0.25);

    &:hover {
      box-shadow: inset 0 1px $highlight_color;
    }

    &:active {
      box-shadow: inset 0 1px $highlight_color;
    }
  } @else {
    box-shadow: inset 0 1px 2px rgba(black, 0.1), inset 0 0 0 1px $check_radio_border;

    &:hover {
      box-shadow: inset 0 0 0 1px $check_radio_border;
    }

    &:active {
      box-shadow: inset 0 0 0 1px $check_radio_border;
    }
  }

  &:disabled {
    background-image: none;
    background-color: if($variant == 'light', rgba(white, 0.45), rgba(white, 0.08));

    @if $variant == 'light' {
      box-shadow: inset 0 0 0 1px rgba(black, 0.08);
    } @else { box-shadow: none; }
  }

  &:checked, &:indeterminate {
    color: $selected_fg_color;
    background-color: $selected_bg_color;

    @if $variant == 'light' {
      background-clip: border-box;
    } @else {
      background-image: $check_radio_checked_image;
    }

    &:hover {
      @if $variant == 'light' {
        box-shadow: inset 0 0 0 1px $check_radio_border;
      } @else {
        box-shadow: inset 0 1px $highlight_color;
      }
    }

    &:active {
      background-color: $selected_bg_color;

      @if $variant == 'light' {
        box-shadow: inset 0 0 0 1px $check_radio_border;
      } @else {
        box-shadow: inset 0 1px $highlight_color;
      }
    }

    &:disabled {
      color: $alt_disabled_fg_color;
      background-image: none;
      background-color: if($variant == 'light', rgba(white, 0.45), rgba(white, 0.08));

      @if $variant == 'light' {
        box-shadow: inset 0 0 0 1px rgba(black, 0.08);
      } @else { box-shadow: none; }
    }
  }
}

%check,
check {
  border-radius: 3px;

  &:checked { -gtk-icon-source: -gtk-scaled(-gtk-recolor(url("assets/scalable/checkbox-checked-symbolic.svg")),
                                            -gtk-recolor(url("assets/scalable/checkbox-checked-symbolic@2.svg"))); }
  &:indeterminate { -gtk-icon-source: -gtk-scaled(-gtk-recolor(url("assets/scalable/checkbox-mixed-symbolic.svg")),
                                                  -gtk-recolor(url("assets/scalable/checkbox-mixed-symbolic@2.svg"))); }
}

%radio,
radio {
  border-radius: $circular_radius;

  &:checked { -gtk-icon-source: -gtk-scaled(-gtk-recolor(url("assets/scalable/radio-checked-symbolic.svg")),
                                            -gtk-recolor(url("assets/scalable/radio-checked-symbolic@2.svg"))); }
  &:indeterminate { -gtk-icon-source: -gtk-scaled(-gtk-recolor(url("assets/scalable/radio-mixed-symbolic.svg")),
                                                  -gtk-recolor(url("assets/scalable/radio-mixed-symbolic@2.svg"))); }
}

//
// GtkScale
//
scale {
  $_marks_length: $container_padding / 2;
  $_marks_distance: 1px;

  min-height: 15px;
  min-width: 15px;
  padding: $container_padding / 2;

  // The slider is inside the trough, negative margin to make it bigger
  > trough > slider {
    min-height: 15px;
    min-width: 15px;
    margin: -7px;
  }

  // Click-and-hold the slider to activate
  &.fine-tune {
    // Make the trough grow in fine-tune mode
    > trough > slider { margin: -4px; }

    > trough > fill,
    > trough > highlight,
    > trough {
      border-radius: 5px;
    }
  }

  // Trough
  > trough {
    $_scale_trough_bg: rgba(black, 0.2);

    outline-offset: 2px;
    border-radius: $bt_radius;
    background-color: $_scale_trough_bg;

    &:disabled { background-color: rgba($_scale_trough_bg, 0.12); }

    //OSD troughs
    .osd & {
      background-color: $_scale_trough_bg;

      highlight {
        background-color: $selected_bg_color;
      }
    }

    // Troughs in selected list-rows and infobars
    modelbutton:hover &,
    row:selected &,
    infobar & {
      background-color: transparentize(black, 0.8);

      > trough > highlight {
        background-color: $selected_fg_color;

        &:disabled { background-color: rgba($selected_fg_color, 0.5); }
      }

      &:disabled { background-color: transparentize(black, 0.9); }
    }
  }

  // The colored part of trough
  > trough > highlight {
    border-radius: $bt_radius;
    background-color: $selected_bg_color;

    &:disabled { background-color: rgba($selected_bg_color, 0.55); }
  }

  // this is another differently styled part of the trough, the most relevant use case is for example
  // in media player to indicate how much video stream as been cached
  > trough > fill {
    border-radius: $bt_radius;
    background-color: rgba($selected_bg_color, 0.5);

    &:disabled { background-color: transparent; }
  }

  > trough > slider {
    $_slider_border: if($variant=='light', transparentize(darken($button_border, 0%), 0), transparentize($button_border, 0));

    background-color: $selected_fg_color;
    border: 1px solid $_slider_border;
    border-radius: 100%;
    box-shadow: $shadow_2;
    background-clip: padding-box;
    transition: $button_transition;
    transition-property: background, border;
    outline: none;

    &:hover {
      background-color: lighten($selected_fg_color, 3%);
      border-color: $_slider_border;
      box-shadow: $shadow_0;
    }

    &:active {
      background-color: $selected_fg_color;
      border-color: $_slider_border;
      box-shadow: $shadow_3;
    }

    &:disabled {
      background-color: darken($selected_fg_color, 5%);
      border-color: darken($_slider_border, 5%);
      box-shadow: none;
    }

    // Selected list-row and infobar sliders
    modelbutton:hover &,
    row:selected &,
    infobar & {
      background-color: $selected_fg_color;
      border-color: $selected_fg_color;

      @if $gnome_version == 'old' {
        &:hover {
          background-color: mix($selected_fg_color, $selected_bg_color, 85%);
          border-color: mix($selected_fg_color, $selected_bg_color, 85%);
        }
        &:active {
          background-color: mix($selected_fg_color, $selected_bg_color, 50%);
          border-color: mix($selected_fg_color, $selected_bg_color, 50%);
        }
        &:disabled {
          background-color: mix($selected_fg_color, $selected_bg_color, 55%);
          border-color: mix($selected_fg_color, $selected_bg_color, 55%);
        }
      } @else {
        &:hover {
          background-color: color-mix(in srgb, $selected_fg_color 85%, $selected_bg_color);
          border-color: color-mix(in srgb, $selected_fg_color 85%, $selected_bg_color);
        }
        &:active {
          background-color: color-mix(in srgb, $selected_fg_color 50%, $selected_bg_color);
          border-color: color-mix(in srgb, $selected_fg_color 50%, $selected_bg_color);
        }
        &:disabled {
          background-color: color-mix(in srgb, $selected_fg_color 55%, $selected_bg_color);
          border-color: color-mix(in srgb, $selected_fg_color 55%, $selected_bg_color);
        }
      }
    }

    // OSD sliders
    .osd & {
      background-color: $selected_fg_color;
      border-color: $_slider_border;

      &:hover {
        background-color: lighten($selected_fg_color, 3%);
        border-color: $_slider_border;
        box-shadow: $shadow_0;
        }

      &:active {
        background-color: darken($selected_fg_color, 3%);
        border-color: $_slider_border;
        box-shadow: $shadow_3;
      }
    }
  }

  > value { color: gtkalpha(currentColor, 0.4); }

  > marks {
    color: gtkalpha(currentColor, 0.4);

    @each $marks_class, $marks_pos, $marks_margin in (top, top, bottom),
                                                     (bottom, bottom, top),
                                                     (top, left, right),
                                                     (bottom, right, left) {
      &.#{$marks_class} {
        margin-#{$marks_margin}: $_marks_distance;
        margin-#{$marks_pos}: -($_marks_distance + $_marks_length);
      }
    }
  }

  &.fine-tune > marks {
    @each $marks_class, $marks_pos, $marks_margin in (top, top, bottom),
                                                     (bottom, bottom, top),
                                                     (top, left, right),
                                                     (bottom, right, left) {
      &.#{$marks_class} {
        margin-#{$marks_margin}: ($_marks_distance - 1px);
        margin-#{$marks_pos}: -($_marks_distance + $_marks_length - 2px);
      }
    }
  }

  &.horizontal {
    indicator {
      min-height: $_marks_length;
      min-width: 1px;
    }

    &.fine-tune indicator { min-height: ($_marks_length - 1px); }
  }

  &.vertical {
    indicator {
      min-height: 1px;
      min-width: $_marks_length;
    }

    &.fine-tune indicator { min-width: ($_marks_length - 1px); }
  }

  // *WARNING* scale with marks madness following

  // FIXME: OSD and selected list rows missing, I don't feel like adding the other 144 assets needed for those...
  // $suffix: if($variant == 'light', '', '-dark');

  @each $dir_class, $dir_infix in ('horizontal', 'horz'),
                                  ('vertical', 'vert') {
    @each $marks_infix, $marks_class in ('scale-has-marks-above', 'marks-before:not(.marks-after)'),
                                        ('scale-has-marks-below', 'marks-after:not(.marks-before)') {
      @each $state, $state_infix in ('', ''),
                                    (':hover', '-hover'),
                                    (':active', '-active'),
                                    (':disabled', '-insensitive') {
        &.#{$dir_class}.#{$marks_class} {
          slider {
            transform: none;

            &#{$state} {
              // an asymmetric slider asset is used here, so the margins are uneven, the smaller
              // margin is set on the point side.
              margin: -10px;
              $_scale_asset: 'assets/slider-#{$dir_infix}-#{$marks_infix}#{$state_infix}';
              border-style: none;
              border-radius: 0;

              background-color: transparent;
              background-image: -gtk-scaled(url('#{$_scale_asset}.png'), url('#{$_scale_asset}@2.png'));

              $_scale_slider_bg_pos: bottom;

              @if $dir_class == 'horizontal' {
                min-height: 26px;
                min-width: 24px;

                @if $marks_infix == 'scale-has-marks-above' {
                  margin-top: -14px;

                  $_scale_slider_bg_pos: top;
                }

                @else { margin-bottom: -14px; }
              }

              @else {
                min-height: 24px;
                min-width: 26px;

                @if $marks_infix == 'scale-has-marks-above' {
                  margin-left: -14px;

                  $_scale_slider_bg_pos: left bottom;
                }

                @else {
                  margin-right: -14px;

                  $_scale_slider_bg_pos: right bottom;
                }
              }

              background-position: $_scale_slider_bg_pos;
              background-repeat: no-repeat;
              box-shadow: none;
            }
          }

          &.fine-tune slider {
            // bigger negative margins to make the trough grow here as well
            margin: -7px;

            @if $dir_class == 'horizontal' {
              @if $marks_infix == 'scale-has-marks-above' { margin-top: -11px; }

              @else { margin-bottom: -11px; }
            }

            @else {
              @if $marks_infix == 'scale-has-marks-above' { margin-left: -11px; }

              @else { margin-right: -11px; }
            }
          }
        }
      }
    }
  }
}


//
// Progress bars
//
progressbar {
  padding: 0;
  font-size: smaller;
  color: transparentize($fg_color, 0.3);
  font-feature-settings: "tnum";

  // sizing
  &.horizontal {
    > trough {
      min-width: 150px;
      &, > progress {
        min-height: 4px;
        border-radius: 2px;
      }
    }
  }

  &.vertical {
    > trough {
      min-height: 80px;
      &, > progress {
        min-width: 4px;
        border-radius: 2px;
      }
    }
  }

//  &.horizontal > trough > progress { margin: 0 -1px; } // the progress node is positioned after the trough border
//  &.vertical > trough > progress { margin: -1px 0; }   // this moves it over it.

  &.osd {
    min-width: $container_padding / 2;
    min-height: $container_padding / 2;
    background-color: transparent;
    box-shadow: none;
    border: none;
    margin: 0;
    padding: 0;

    > trough {
      border-style: none;
      background-color: transparent;
      box-shadow: none;
    }

    > progress {
      border-style: none;
      border-radius: 0;
    }
  }

  // Moving bit
  > trough > progress {
    // min-height: $container_padding - 2px;
    // min-width: $container_padding - 2px;
    background-color: $progress_color;
    border: none;
    border-radius: $bt_radius;
    box-shadow: none; //needed for clipping

    row:selected &,
    infobar & { background-color: $selected_fg_color; }
  }

  // Trough
  > trough {
    min-height: $container_padding - 2px;
    min-width: $container_padding - 2px;
    border: none;
    border-radius: $bt_radius;
    background-color: if($variant == 'light', $button_border, darken($bg_color, 5%));

    row:selected &,
    infobar & { background-color: transparentize(black, 0.8); }
  }
}

//
// Level Bar
//
levelbar {
  block {
    min-width: 32px;
    min-height: 1px;
  }

  &.vertical block {
    min-width: 1px;
    min-height: 32px;
  }

  trough {
    border: none;
    padding: $container_padding / 2;
    border-radius: $bt_radius;
    background-color: if($variant == 'light', $button_border, darken($bg_color, 5%));
  }

  &.horizontal.discrete block { margin: 0 1px; }
  &.vertical.discrete block { margin: 1px 0; }

  block:not(.empty) {
    border: 1px solid $selected_bg_color;
    background-color: $selected_bg_color;
    border-radius: $bt_radius;
  }
  block.low {
    border-color: $warning_color;
    background-color: $warning_color;
  }
  block.high {
    border-color: $selected_bg_color;
    background-color: $selected_bg_color;
  }
  block.full {
    border-color: $success_color;
    background-color: $success_color;
  }
  block.empty {
    background-color: if($variant=='light', transparentize($fg_color,0.8), $base_color);
    border-color: if($variant=='light', transparentize($fg_color,0.8), $base_color);
  }
}

//
// Print dialog
//
window.dialog.print {
  drawing {
    color: $fg_color;
    background: none;
    border: none;
    padding: 0;

    paper {
      border: 1px solid $borders_color;
      background: $base_color;
      padding: 0;
    }
  }

  .dialog-action-box { margin: $container_padding * 2; }
}

//
// Frames
//
frame,
.frame {
  border: 1px solid $borders_color;

  > list {
    border: none;
  }
}

frame {
  border-radius: $wm_radius;

  > label {
    margin: $container_padding - 2px;
  }

  > list {
    border-radius: $wm_radius - 2px;
    box-shadow: none;
  }
}

scrolledwindow {
  viewport.frame { // avoid double borders when viewport inside scrolled window
    border: none;

    .frame {
      border: none;

      > textview {
        border-radius: $bt_radius;
        background: none;

        > text {
          border-radius: $bt_radius;
          border: 1px solid $borders_color;
        }
      }
    }

    > box.vertical list.content.view {
      border-top-left-radius: $wm_radius;
      border-top-right-radius: $wm_radius;
    }

    > box.vertical list.frame {
      @extend %circular_list;
      padding: 0;

      > row.activatable { @extend %circular_row; }

      list {
        border: none;
        box-shadow: none;
        border-radius: 0;
        margin: 0;
        background: none;

        > row.activatable {
          &, &:first-child, &:last-child {
            border-radius: 0;
          }
        }
      }
    }
  }

  // This is used by GtkScrolledWindow, when content is touch-dragged past boundaries.
  // This draws a box on top of the content, the size changes programmatically.
  > overshoot {
    &.top { @include overshoot(top); }
    &.bottom { @include overshoot(bottom); }
    &.left { @include overshoot(left); }
    &.right { @include overshoot(right); }
  }

  // Overflow indication, works similarly to the overshoot, the size if fixed tho.
  > undershoot {
    background: none;
    border: none;
    padding: 0;
  }

  &.undershoot-top {
    @include undershoot(top);
  }

  &.undershoot-bottom {
    @include undershoot(bottom);
  }

  &.undershoot-start {
    &:dir(ltr) { @include undershoot(left); }
    &:dir(rtl) { @include undershoot(right); }
  }

  &.undershoot-end {
    &:dir(ltr) { @include undershoot(right); }
    &:dir(rtl) { @include undershoot(left); }
  }

  > junction { // the small square between two scrollbars
    border: none;
    background-color: $_scrollbar_bg_color;

    // &:dir(rtl) { border-style: solid solid none none; }
  }
}

//vbox and hbox separators
separator {
  background-color: $borders_color;
  min-width: 1px;
  min-height: 1px;

  &.spacer {
    background: none;

    &.horizontal { min-width: $container_padding * 2; }
    &.vertical { min-height: $container_padding * 2; }
  }
}

//
// Lists
//
listview,
list {
  background-color: $base_color;
  border-color: $borders_color;
  background-clip: padding-box;
  color: $fg_color;

  > row {
    background-clip: padding-box;

    &.expander { padding: 0; }
    &.expander .row-header { padding: $container_padding / 2; }
  }

  &.horizontal row.separator,
  &.separators.horizontal > row:not(.separator) {
    border-left: 1px solid $borders_color;
  }

  &:not(.horizontal) row.separator,
  &.separators:not(.horizontal) > row:not(.separator) {
    border-bottom: 1px solid $borders_color;
  }

  &.content:not(.conversation-listbox) {
    @extend %circular_list;

    > row {
      @extend %circular_row;
    }
  }
}

listview.view {
  color: $fg_color;
  background-color: transparent;
}

%row_activatable {
  &.has-open-popup,
  &:hover { background-color: $fill_color; }

  &:active {
    color: $fg_color;
    background-color: $track_color;
    transition-duration: 200ms;
  }

  &:disabled {
    color: $disabled_fg_color;
    image { color: inherit; }
  }

  &:selected {
    &, &:active {
      color: $fg_color;
      background-color: $visit_color;
    }

    &.has-open-popup,
    &:hover { background-color: $track_color; }
  }
}

row {
  background-clip: padding-box;

  label.subtitle {
    font-size: smaller;
    @extend .dim-label;
  }

  > box.header {
    margin-left: $container_padding * 2;
    margin-right: $container_padding * 2;
    min-height: $large_size;

    > .icon:disabled {
      filter: opacity($disabled_opacity);
    }

    > box.title {
      margin-top: $container_padding;
      margin-bottom: $container_padding;
      border-spacing: $container_padding / 2;
    }
  }

  &:not(:hover) { transition: all 300ms $ease-out-quad; }

  button.circular { @extend %circular_button; }

  button &.activatable {
    &:focus, &:hover, &:active { background: none; }
  }

  &:selected {
    color: $fg_color;
    background-color: $visit_color;

    // button { @extend %selected-button; }
  }

  &.activatable {
    @extend %row_activatable;
  }

  &.combo {
    image.dropdown-arrow:disabled {
      filter: opacity($disabled_opacity);
    }

    listview.inline {
      background: none;
      border: none;
      box-shadow: none;
      color: inherit;

      &, &:disabled {
        background: none;
        color: inherit;
      }
    }

    popover > contents {
      min-width: 120px;
    }
  }
}

columnview {
  // move padding to child cells
  > listview > row {
    padding: 0;

    // align horizontal sizing with header buttons
    > cell {
      padding: $container_padding + 2px $container_padding;

      &:not(:first-child) {
        border-left: 1px solid transparent;
      }
    }
  }

  // make column separators visible when :show-column-separators is true
  &.column-separators > listview > row > cell {
    border-left-color: $borders_color;
  }

  // shrink vertically for .data-table
  &.data-table > listview > row > cell {
    padding-top: 2px;
    padding-bottom: 2px;
  }
}

treeexpander {
  border-spacing: $container_padding;
}

columnview row:not(:selected) cell editablelabel:not(.editing):focus-within {
  outline: 2px solid $borders_color;
}

columnview row:not(:selected) cell editablelabel.editing:focus-within {
  outline: 2px solid $selected_bg_color;
}

columnview row:not(:selected) cell editablelabel.editing text selection {
  color: $selected_fg_color;
  background-color: $selected_bg_color;
}

.rich-list { /* rich lists usually containing other widgets than just labels/text */
  > row {
    padding: 8px 12px;
    min-height: 32px; /* should be tall even when only containing a label */

    > box {
      border-spacing: 12px;
    }
  }

  > header {
    padding-left: 12px;
    padding-right: 12px;
  }
}

/****************
 * AdwActionRow *
 ****************/

row {
  label.subtitle {
    font-size: smaller;
    @extend .dim-label;
  }

  > box.header {
    margin-left: 12px;
    margin-right: 12px;
    border-spacing: 6px;
    min-height: 50px;

    > .icon:disabled {
      filter: opacity($disabled_opacity);
    }

    > box.title {
      margin-top: 6px;
      margin-bottom: 6px;
      border-spacing: 3px;
      padding: 0;

      // Specificity bump for header bar
      &,
      > .title,
      > .subtitle {
        padding: 0;
        font-weight: inherit;
      }
    }

    > .prefixes,
    > .suffixes {
      border-spacing: 6px;
    }

    > .icon,
    > .prefixes {
      &:dir(ltr) { margin-right: 6px; }
      &:dir(rtl) { margin-left: 6px; }
    }
  }

  &.property > box.header > box.title > {
    .title {
      font-size: smaller;
      @extend .dim-label;
    }

    .subtitle {
      font-size: inherit;
      opacity: 1;
    }
  }

  &.property.monospace {
    font-family: inherit;

    & > box.header > box.title > .subtitle {
      font-family: monospace;
    }
  }
}

/******************************
 * AdwEntryRow and AdwSpinRow *
 ******************************/

row.entry {
  &:disabled {
    text {
      opacity: $disabled_opacity;
    }

    .dim-label, .subtitle {
      opacity: 1;
    }
  }

  .edit-icon, .indicator {
    min-width: 24px;
    min-height: 24px;
    padding: 5px;
  }

  .edit-icon:disabled {
    opacity: $disabled_opacity;
  }

  .indicator {
    opacity: $hint_opacity;
  }

  &.monospace {
    font-family: inherit;

    text {
      font-family: monospace;
    }
  }
}

row.spin {
  spinbutton {
    border-spacing: $container_padding;

    &, &:focus, &:focus-within, &:hover, &:active {
      outline: none;
      box-shadow: none;
      background: none;
    }

    > button.image-button.up:not(.flat):not(.raised):not(.suggested-action):not(.destructive-action):not(.opaque):last-child,
    > button.image-button.down:not(.flat):not(.raised):not(.suggested-action):not(.destructive-action):not(.opaque) {
      &, &:dir(ltr):last-child, &:dir(rtl):first-child {
        @extend %button_basic;
        @extend %circular_button;
        min-width: 30px;
        min-height: 30px;
        margin: 10px 2px;
        border: none;
      }
    }
  }

  &:disabled spinbutton {
    > button.image-button.up:not(.flat):not(.raised):not(.suggested-action):not(.destructive-action):not(.opaque):last-child,
    > button.image-button.down:not(.flat):not(.raised):not(.suggested-action):not(.destructive-action):not(.opaque) {
      &, &:dir(ltr):last-child, &:dir(rtl):first-child {
        &:disabled {
          filter: none;
        }
      }
    }
  }
}

row.entry,
row.spin {
  outline: none;

  &:not(:selected).activatable.focused:hover,
  &:not(:selected).activatable.focused:active {
    background-color: transparent;
  }

  @each $e_type in error, warning, success {
    &.#{$e_type} {
      color: $primary_color;

      .dim-label, .subtitle {
        opacity: 1;
      }
    }
  }
}

/***************
 * AdwComboRow *
 ***************/

row.combo {
  image.dropdown-arrow:disabled {
    filter: opacity($disabled_opacity);
  }

  listview.inline {
    background: none;
    border: none;
    box-shadow: none;
    color: inherit;

    &, &:disabled {
      background: none;
      color: inherit;
    }
  }

  popover > contents {
    min-width: 120px;

    .combo-searchbar {
      margin: 6px;

      + scrolledwindow {
        @include undershoot(top);
      }
    }
  }
}

/******************
 * AdwExpanderRow *
 ******************/

@mixin margin-start($margin) {
  &:dir(ltr) {
    margin-left: $margin;
  }

  &:dir(rtl) {
    margin-right: $margin;
  }
}

row.expander {
  // Drop transparent background on expander rows to let nested rows handle it,
  // avoiding double highlights.
  background: none;
  padding: 0px;

  > box > list {
    background: none;
    color: inherit;
  }

  list.nested {
    background-color: rgba($base_color, 0.5);
    color: inherit;
  }

  list.nested > row {
    @extend %boxed_list_row;
  }

  // AdwExpanderRow arrow rotation

  image.expander-row-arrow {
    @extend .dim-label;

    transition: -gtk-icon-transform 200ms $ease-out-quad;
    @include margin-start(3px);

    &:dir(ltr) {
      -gtk-icon-transform: rotate(0.5turn);
    }

    &:dir(rtl) {
      -gtk-icon-transform: rotate(-0.5turn);
    }

    &:disabled {
      filter: opacity($disabled_opacity);
    }
  }

  &:checked image.expander-row-arrow {
    -gtk-icon-transform: rotate(0turn);
    opacity: 1;

    &:not(:disabled) {
      color: $primary_color;
    }
  }

  .osd &:checked image.expander-row-arrow:not(:disabled) {
    color: inherit;
  }

  &.property box > list > row {
    @extend .property;
  }
}

/***************
 * AdwButtonRow *
 ***************/

row.button {
  > box {
    margin-left: 12px;
    margin-right: 12px;
    border-spacing: 6px;
    min-height: 42px;

    > .icon:disabled {
      filter: opacity($disabled_opacity);
    }
  }

  .title {
    @extend .heading;
  }
}


/*****************
 * Boxed Lists *
 *****************/

%boxed_list_row {
  outline: none;
  border: none;

  &.has-open-popup,
  &:hover { background-color: $fill_color; }

  &:active {
    color: $fg_color;
    background-color: $track_color;
    transition-duration: 200ms;
  }

  &:disabled {
    color: $disabled_fg_color;
    image { color: inherit; }
  }

  &:selected {
    &, &:active {
      color: $fg_color;
      background-color: $visit_color;
    }

    &.has-open-popup,
    &:hover { background-color: $track_color; }
  }

  & + row {
    border-top: 1px solid transparent;
    border-image: linear-gradient(to right,
                                  transparent 0%,
                                  transparent 2%,
                                  $menu_bd 2%,
                                  $menu_bd 98%,
                                  transparent 98%,
                                  transparent 100%) 1 0 0 0 / 1px 0 0 0 stretch;
  }

  &:hover, &:active, &:selected {
    &, & + row {
      border-image: none;
    }
  }
}

list.boxed-list {
  @extend %circular_list;

  > row {
    // Regular rows and expander header rows background
    &, &.expander row.header {
      @extend %boxed_list_row;
    }

    &.expander {
      border: none;
    }

    // Rounded top
    &:first-child {
      &, &.expander row.header {
        border-top-left-radius: $bd_radius;
        border-top-right-radius: $bd_radius;
      }
    }

    // Rounded bottom
    &:last-child {
      &,
      &.expander:not(:checked),
      &.expander:not(:checked) row.header,
      &.expander:checked list.nested,
      &.expander:checked list.nested > row:last-child {
        border-bottom-left-radius: $bd_radius;
        border-bottom-right-radius: $bd_radius;
        border-bottom-width: 0;
      }
    }
  }
}

list.boxed-list-separate {
  color: $fg_color;
  @extend %circular_list;

  > row {
    border: none;
    margin-bottom: 12px;
    outline: none;
    box-shadow: none;
    background-color: transparent;
    @extend %boxed_list_row;
    @extend %circular_row;

    &:selected {
      background-color: $visit_color;
    }

    &:last-child {
      margin-bottom: 0;
    }

    &:not(.expander) {
      &:not(:selected).activatable {
        &:hover {
          background-color: $base_color;
          background-image: image(gtkalpha(currentColor, 0.03));
        }

        &:active {
          background-color: $base_color;
          background-image: image(gtkalpha(currentColor, 0.08));
        }

        &.has-open-popup {
          background-color: $base_color;
          background-image: image(gtkalpha(currentColor, 0.03));
        }
      }
    }

    &.entry, &.spin {
      &:not(:selected).activatable.focused:hover,
      &:not(:selected).activatable.focused:active {
        background-color: $base_color;
        background-image: none;
      }
    }

    &.expander {
      row.header {
        @extend %boxed_list_row;
        border-top-left-radius: $bd_radius;
        border-top-right-radius: $bd_radius;
      }

      &:not(:checked) row.header,
      &.expander:checked list.nested,
      &.expander:checked list.nested > row:last-child {
        border-bottom-left-radius: $bd_radius;
        border-bottom-right-radius: $bd_radius;
        border-bottom: none;
      }
    }
  }
}

//
// App Notifications
//
.app-notification {
  padding: $container_padding;
  margin: 6px 16px 16px 16px;
  color: $fg_color;
  background-color: rgba($header_bg, 0.85);
  // background-image: linear-gradient(0deg, $bg_color 0%, $bg_color 85%, darken($bg_color, 5%) 95%, darken($bg_color, 15%) 100%);
  border-radius: $wm_radius;
  border: none;
  box-shadow: 0 5px 15px 0 rgba(black, 0.25),
              inset 0 0 0 1px rgba(white, 0.06),
              0 0 0 1px if($variant=='light', rgba(black, 0.12), rgba(black, 0.75));

  border { border: none; }

  button {
    @extend %undecorated_button;
    min-height: 22px;
    padding: 2px 8px;

    &:not(.text-button).image-button {
      @extend %circular_button;
    }

    &:hover { @include button(flat-hover); }
    &:active, &:checked { @include button(flat-active); }
    &:disabled { @include button(flat-insensitive); }
  }
}

//
// Expanders
//
expander {
  min-width: 16px;
  min-height: 16px;
  -gtk-icon-source: -gtk-icontheme('pan-end-symbolic');

  &:dir(rtl) { -gtk-icon-source: -gtk-icontheme('pan-end-symbolic-rtl'); }
  &:hover { color: lighten($fg_color,30%); } //only lightens the arrow
  &:checked { -gtk-icon-source: -gtk-icontheme('pan-down-symbolic'); }
  &:disabled { filter: opacity($disabled_opacity); }
}

expander-widget {
  > box > title {
    border-radius: $bt_radius;

    > expander {
      opacity: .7;
    }

    &:hover > expander {
      opacity: 1;
    }
  }
}

.navigation-sidebar,
placessidebar,
stackswitcher,
expander-widget {
  &:not(decoration):not(window):drop(active):focus,
  &:not(decoration):not(window):drop(active) {
    box-shadow: none;
  }
}

//
// Calendar
//
%calendar,
calendar {
  color: $fg_color;
  border: 1px solid $borders_color;
  border-radius: $bt_radius;
  padding: 2px $container_padding;
  margin: 0;

  > header {
    color: $fg_color;
    border-bottom: 1px solid $borders_color;

    > button {
      border: none;
      box-shadow: none;
      background: none;
      border-radius: 0;

      &:hover { background-color: rgba($fg_color, 0.1); }
      &:active { background-color: $selected_bg_color; }
    }

    > button:backdrop {
      background: none;
    }
  }

  > grid {
    > label.today {
      background-color: rgba($fg_color, 0.15);
      border-radius: 3px;

      &:selected {
        box-shadow: none;
      }
    }

    > label:focus {
      outline-style: none;
    }

    > label.day-number {
      padding: 4px;

      &:selected {
        @extend %selected_items;
        border-radius: $bt_radius;
      }
    }

    > label.day-number.other-month {
      color: gtkalpha(currentColor, 0.3);
    }
  }
}

//
// Dialogs
//

$messagedialog_bg: if($trans == 'true', rgba($bg_color, 0.95), $bg_color);

window.dialog.message { // Message Dialog styling
  &.background { background-color: $messagedialog_bg; }

  .titlebar {
    min-height: 28px;
    background-color: transparent;
    border: none;
  }

  box.dialog-vbox.vertical {
    border-spacing: 10px;
  }

  & label.title {
    font-weight: 800;
    font-size: 15pt;
  }

  .dialog-action-area {
    padding: $container_padding;

    > button {
      min-height: 20px;
      padding: ($container_padding - 2px) ($container_padding + 2px);
      box-shadow: none;
      border-radius: $bt_radius;
      margin: $container_padding / 2;
      border: none;

      &:not(.suggested-action):not(.destructive-action) {
        border-radius: $bt_radius;
        background-color: transparent;

        &:hover {
          @include button(flat-hover);
          transition: $button_transition;
        }

        &:active {
          @include button(active);
        }
      }

      &.suggested-action, &.destructive-action {
        border-radius: $bt_radius;
      }
    }
  }
}

window.background.messagedialog {
  .response-area {
    padding: $container_padding;

    button {
      min-height: 20px;
      padding: ($container_padding - 2px) ($container_padding + 2px);
      box-shadow: none;
      border-radius: $bt_radius;
      margin: $container_padding / 2;
      border: none;

      &:not(.suggested-action):not(.destructive-action) {
        border-radius: $bt_radius;
        background-color: transparent;

        &:hover {
          @include button(flat-hover);
          transition: $button_transition;
        }

        &:active {
          @include button(active);
        }
      }

      &.suggested-action, &.destructive-action {
        border-radius: $bt_radius;
      }
    }

    separator { background-color: transparent; }
  }
}

window.aboutdialog image.large-icons {
  -gtk-icon-size: 128px;
}

//
// Filechooser
//
filechooser {
  paned.horizontal > separator {
    background-image: image($header_border);
  }

  #pathbarbox { border-bottom: 1px solid $borders_color; }
}

// Filechooser, we put this here to give a different style between csd and
// ssd on certain DE-s

filechooserbutton > button > box {
  border-spacing: $container_padding;
}

filechooserbutton:drop(active) {
  box-shadow: none;
  border-color: transparent;
}

//
// Sidebar
//
%sidebar_left {
  border-right: 1px solid $header_border;
  border-left-style: none;
}

%sidebar_right {
  border-left: 1px solid $header_border;
  border-right-style: none;
}

.sidebar {
  border-style: none;
  background-color: $bg_color;

  &:dir(ltr),
  &.left,
  &.left:dir(rtl) { @extend %sidebar_left; }

  &:dir(rtl),
  &.right { @extend %sidebar_right; }

  list {
    background-color: transparent;

    > separator {
      min-height: 0;
      background: none;
      border: none;
    }
  }

  paned & { &.left, &.right, &.left:dir(rtl), &:dir(rtl), &:dir(ltr), & { border: none; }}
}

separator.sidebar {
  background-color: $header_border;
  min-height: 1px;
  min-width: 1px;
  border: none;

  &:dir(ltr),
  &.left,
  &.left:dir(rtl),
  &:dir(rtl),
  &.right { border: none; }
}

stacksidebar {
  list.separators:not(.horizontal) > row:not(.separator) {
    border-bottom: none;
  }

  row {
    padding: $container_padding - 2px;

    > label {
      padding-left: $container_padding;
      padding-right: $container_padding;
    }

    &.needs-attention > label {
      @extend %needs_attention;
      background-size: $container_padding $container_padding, 0 0;
    }
  }
}

// Navigation Sidebar
.navigation-sidebar {
  background-color: $dark_sidebar_bg;
  padding: $container_padding; //only vertical padding. horizontal row size would clip

  > separator {
    margin: $container_padding 0;
    background: none;
  }

  > row {
    min-height: 36px;
    padding: 0 $container_padding + 2px;
    border-radius: $bt_radius;
    margin: 0;
    outline: none;

    + row { margin-top: $container_padding / 2; }

    &:hover,
    &:focus-visible:focus-within {
      background-color: rgba($fg_color, 0.1);
    }

    &:active {
      color: $fg_color;
      background-color: rgba($fg_color, 0.2);
    }

    &:selected {
      color: $fg_color;
      background-color: rgba($fg_color, 0.15);

      &:hover {
        background-color: rgba($fg_color, 0.2);
      }

      &:focus-visible:focus-within {
        outline: none;
        color: $fg_color;
        background-color: rgba($fg_color, 0.15);

        &:hover { background-color: rgba($fg_color, 0.2); }
      }
    }

    &:disabled { color: $disabled_fg_color; }
  }
}

placessidebar {
  > viewport.frame { border-style: none; }

  .navigation-sidebar > row {
    // Needs overriding of the GtkListBoxRow padding
    min-height: 24px;
    padding: ($container_padding - 4px) ($container_padding + 4px);
    // Using margins/padding directly in the SidebarRow
    // will make the animation of the new bookmark row jump
    > revealer {
      padding: 0;
    }

    image.sidebar-icon {
      &:dir(ltr) { padding-right: $container_padding; }
      &:dir(rtl) { padding-left: $container_padding; }
    }

    label.sidebar-label {
      &:dir(ltr) { padding-right: $container_padding; }
      &:dir(rtl) { padding-left: $container_padding; }
    }

    button.sidebar-button {
      min-width: $small_size + 2px;
      min-height: $small_size + 2px;
      margin-top: 2px;
      margin-bottom: 2px;
      padding: 0;
      border-radius: $circular_radius;

      > image { opacity: 0.85 };

      &:active, &:checked {
        @include button(flat-active);
        border-color: if($variant=='light', rgba(black, 0.3), $dark_borders_color);
      }

      &:not(:hover):not(:active) > image { opacity: 0.65 };
    }

    &:selected button.sidebar-button {
      @include button(normal);

      &:active, &:checked {
        @include button(flat-active);
        border-color: if($variant=='light', rgba(black, 0.25), rgba(black, 0.15));
      }
    }

    &.sidebar-placeholder-row {
      padding: 0 $container_padding + 2px;
      min-height: 2px;
      background-image: _solid($drop_target_color);
      background-clip: content-box;
    }

    &.sidebar-new-bookmark-row { color: $selected_bg_color; }

    &:drop(active):not(:disabled) {
      color: $drop_target_color;
      box-shadow: inset 0 1px $drop_target_color,
                  inset 0 -1px $drop_target_color;

      &:selected {
        color: $dark_sidebar_fg;
        background-color: $drop_target_color;
      }
    }
  }
}

//
// Placesview
//
placesview {
  .server-list-button > image {
    -gtk-icon-transform: rotate(0turn);
  }

  .server-list-button:checked > image {
    transition: 200ms $ease-out-quad;
    -gtk-icon-transform: rotate(-0.5turn);
  }

  // this selects the "connect to server" label
  > actionbar > revealer > box > label {
    padding-left: 8px;
    padding-right: 8px;
  }
}

//
// Paned
//

paned {
  > separator {
    min-width: 1px;
    min-height: 1px;
    background: none;
    background-size: 1px 1px;

    &.wide {
      min-width: 5px;
      min-height: 5px;
    }
  }

  &.horizontal > separator {
    &:dir(ltr) {
      margin: 0 -8px 0 0;
      padding: 0 8px 0 0;
      box-shadow: inset 1px 0 $borders_color;
    }
    &:dir(rtl) {
      margin: 0 0 0 -8px;
      padding: 0 0 0 8px;
      box-shadow: inset -1px 0 $borders_color;
    }

    &.wide {
      margin: 0;
      padding: 0;
      box-shadow: inset  1px 0 $borders_color,
                  inset -1px 0 $borders_color;
    }
  }

  &.vertical > separator {
    margin: 0 0 -8px 0;
    padding: 0 0 8px 0;
    box-shadow: inset 0 1px $borders_color;

    &.wide {
      margin: 0;
      padding: 0;
      box-shadow: inset 0  1px $borders_color,
                  inset 0 -1px $borders_color;
    }
  }
}

//
// GtkInfoBar
//

infobar {
  border-style: none;

  &.info {
    & > revealer > box,
    &:backdrop > revealer > box {
      background-color: $selected_bg_color;
      selection { color: $selected_bg_color; }
    }
  }

  &.question {
    & > revealer > box,
    &:backdrop > revealer > box {
      background-color: $suggested_color;
      selection { color: $suggested_color; }
    }
  }

  &.warning {
    & > revealer > box,
    &:backdrop > revealer > box {
      background-color: $warning_color;
      selection { color: $warning_color; }
    }
  }

  &.error {
    & > revealer > box,
    &:backdrop > revealer > box {
      background-color: $error_color;
      selection { color: $error_color; }
    }
  }

  &.info,
  &.question,
  &.warning,
  &.error {
    & > revealer > box,
    &:hover > revealer > box,
    &:backdrop > revealer > box {
      color: $selected_fg_color;
      caret-color: currentColor;

      button {
        min-height: 28px;
        @extend %selected-button;
      }

      selection {
        background-color: $selected_fg_color;
      }

      link { @extend %link_selected; }
    }
  }
}

infobar .close,
searchbar .close {
   @include button(undecorated);
   min-width: 16px;
   min-height: 16px;
   padding: 4px;
   border-radius: 1000px;

   &:hover { @include button(flat-hover); }
}

//
// Tooltips
//
tooltip {
  &.background {
    // background-color needs to be set this way otherwise it gets drawn twice
    // see https://bugzilla.gnome.org/show_bug.cgi?id=736155 for details.
    background-color: rgba($osd_bg_color, 0.96);
    background-clip: padding-box;
    border-radius: $wm_radius;
    color: $osd_fg_color;
    border: 1px solid $wm_shadow;
    box-shadow: inset 0 0 0 1px $highlight_color;

    label { padding: $container_padding; }
  }

  border-radius: $wm_radius;
  box-shadow: none;

  > box {
    border-spacing: $container_padding;
  }
}

//
// Color Chooser
//
colorswatch {
  // This widget is made of two boxes one on top of the other, the lower box is GtkColorSwatch {} the other one
  // is GtkColorSwatch .overlay {}, GtkColorSwatch has the programmatically set background, so most of the style
  // is applied to the overlay box.

  $_colorswatch-radius: 2px;

  &, &:drop(active) { border-style: none; }

  // border rounding
  &.top {
    border-top-left-radius: $_colorswatch-radius + 0.5px;
    border-top-right-radius: $_colorswatch-radius + 0.5;

    overlay {
      border-top-left-radius: $_colorswatch-radius;
      border-top-right-radius: $_colorswatch-radius;
    }
  }
  &.bottom {
    border-bottom-left-radius: $_colorswatch-radius + 0.5px;
    border-bottom-right-radius: $_colorswatch-radius + 0.5;

    overlay {
      border-bottom-left-radius: $_colorswatch-radius;
      border-bottom-right-radius: $_colorswatch-radius;
    }
  }
  &.left, &:first-child:not(.top) {
    border-top-left-radius: $_colorswatch_radius + 0.5px;
    border-bottom-left-radius: $_colorswatch_radius + 0.5px;
    overlay {
      border-top-left-radius: $_colorswatch_radius;
      border-bottom-left-radius: $_colorswatch_radius;
    }
  }
  &.right, &:last-child:not(.bottom) {
    border-top-right-radius: $_colorswatch_radius + 0.5px;
    border-bottom-right-radius: $_colorswatch_radius + 0.5px;
    overlay {
      border-top-right-radius: $_colorswatch_radius;
      border-bottom-right-radius: $_colorswatch_radius;
    }
  }

  &.dark overlay {
    color: transparentize(white, 0.3);
    &:hover {
      border-color: if($variant == 'light', transparentize(black, 0.5), $borders_color);
    }
  }
  &.light overlay {
    color: transparentize(black, 0.3);
    &:hover {
      border-color: if($variant == 'light', transparentize(black, 0.7), $borders_color);
    }
  }

  overlay {
    border: 1px solid if($variant == 'light', transparentize(black, 0.85), $borders_color);
    &:hover { background-color: transparentize(white, 0.8) }
  }

  &:disabled {
    opacity: 0.5;
    overlay {
      border-color: transparentize(black, 0.4);
      box-shadow: none;
    }
  }

  &#add-color-button {
    border-style: solid; // the borders are drawn by the overlay for standard colorswatches to have them semi
    border-width: 1px;   // translucent on the colored background, here it's not necessary so they need to be set
    @include button(normal);
    &:hover { @include button(hover); }
    overlay { @include button(undecorated); } // reset the overlay to not cover the button style underneath
  }
}

button.color {
  padding: 0;

  > colorswatch:only-child {
    border-radius: 3px;

    > overlay {
      border-radius: 2px;
    }

    &:disabled {
      filter: none;
    }

    &.light > overlay {
      border-color: $borders_color;
    }
  }

  colorswatch:first-child:last-child {
    margin: $container_padding / 2;

    &, > overlay {
      border-radius: 3px;
    }
  }
}

// colorscale popup
colorchooser .popover.osd { border-radius: $bt_radius; }

//
// Misc
//
//content view (grid/list)
.content-view {
  background-color: $base_color;

  &:hover { -gtk-icon-filter: brightness(1.2); }

  .tile {
    margin: 2px;
    background-color: if($variant=='light', transparent, black);
    border-radius: 0;
    padding: 0;

    &:active, &:selected { background-color: if($variant=='light', transparent, $selected_bg_color); }
    &:disabled { background-color: if($variant=='light', transparent, mix($bg_color, $base_color, 60%)); }
  }

  > rubberband { @extend %rubberband; }
}

.scale-popup {
  // .osd & { @extend %osd; }

  .osd & button.flat {  //FIXME: quick hack, redo properly
    border-style: none;
    border-radius: $bt_radius;
  }

  button { // +/- buttons on GtkVolumeButton popup
    border: none;
    @extend %flat_button;
  }
}

// Decouple the font of context menus from their entry/textview
.context-menu { font: initial; }
// .monospace { font-family: Monospace; }

//
// Shortcuts Help
//

.keycap {
  min-width: $small_size - 4px;
  min-height: $small_size;

  padding: $container_padding / 2 $container_padding;

  color: $fg_color;
  background-color: $base_color;
  border: 1px solid $borders_color;
  border-radius: $bt_radius;
  box-shadow: inset 0px -2px 0px if($variant=='light', transparentize(black, 0.95), transparentize(black, 0.85));
}

stackswitcher {
  button.text-button { min-width: 80px; }
  button.circular {
    @extend %circular_button;
  }
}

shortcuts-section { margin: 20px; }

//
// Dnd
//
*:drop(active):focus,
*:drop(active) {
  box-shadow: inset 0 0 0 1px $drop_target_color;
}

//
// Window Decorations
//

window {
  border: none;

  &.csd {
    transition: none;
    border-radius: $wm_radius;
    outline: 1px solid $highlight_color;
    outline-offset: -1px;
    box-shadow: 0 3px 6px $wm_shadow,
                0 7px 12px $wm_shadow,
                0 12px 20px $wm_shadow,
                $wm_outline;
    margin: 0;

    &:backdrop {
      transition: $shadow_transition;
      // the transparent shadow here is to enforce that the shadow extents don't
      // change when we go to backdrop, to prevent jumping windows
      box-shadow: 0 3px 6px $wm_shadow_backdrop,
                  0 7px 12px $wm_shadow_backdrop,
                  0 12px 20px transparent,
                  $wm_outline;
    }

    &.tiled,
    &.tiled-top,
    &.tiled-left,
    &.tiled-right,
    &.tiled-bottom {
      border-radius: 0;
      outline: none;
    }

    &.maximized,
    &.fullscreen {
      border-radius: 0;
      outline: none;
      box-shadow: none;
      transition: none;
    }

    &.ssd-frame {
      border-bottom-left-radius: 0;
      border-bottom-right-radius: 0;
      outline: none;

      @if $variant == 'dark' {
        headerbar {
          border-top-left-radius: $wm_radius;
          border-top-right-radius: $wm_radius;
          box-shadow: inset 0 1px $highlight_color;
        }

        &.maximized,
        &.fullscreen {
          headerbar {
            border-top-left-radius: 0;
            border-top-right-radius: 0;
            box-shadow: none;
          }
        }
      }
    }
  }

  &.solid-csd {
    border: 1px solid $header_border;
    border-radius: 0;
    margin: 0;
    background-color: $header_bg;
    box-shadow: none;
  }

  // server-side decorations as used by mutter
  &.ssd {
    // just doing borders, wm draws actual shadows
    box-shadow: 0 0 0 1px rgba(black, if($variant == 'light', 0.15, 0.75));
  }
}

//
// Emoji
//
popover.emoji-picker {
  padding: 0;
  border-radius: $wm_radius;

  > contents {
    padding: 0;
  }
}

.emoji-searchbar {
  padding: 6px;
  border-spacing: 6px;
  border-bottom: 1px solid $borders_color;

  entry { margin: 0; }
}

.emoji-toolbar {
  padding: $container_padding / 2;
  border-spacing: 0;
  border-top: 1px solid $borders_color;
}

// mimic tab style
button.emoji-section {
  margin: $container_padding / 2 1px;
  padding: 1px $container_padding * 2;
  border-radius: $bt_radius;
  border: none;
  outline-offset: -2px;
  box-shadow: none;
  transition: none;
  animation: none;

  &:first-child { margin-left: $container_padding; }
  &:last-child { margin-right: $container_padding; }
}

popover.emoji-picker emoji {
  font-size: x-large;
  padding: $container_padding;
  border-radius: $bt_radius;

  &:focus,
  &:hover {
    @extend %selected_items;
  }
}

emoji-completion-row > box {
  border-spacing: $container_padding;
  padding: $container_padding / 2 $container_padding + 4px;
}

emoji-completion-row:focus,
emoji-completion-row:hover {
  background-color: $selected_bg_color;
  color: $selected_fg_color;
}

emoji-completion-row emoji:focus,
emoji-completion-row emoji:hover {
  background-color: $borders_color;
}

popover.entry-completion > contents {
  padding: 0;
}

statusbar {
  padding: $container_padding $container_padding * 2;
}