notebook > header {
  padding: 2px;
  border-width: 1px;
  background-image: none;
  background-color: transparent; }
  notebook > header:disabled {
    background-image: none;
    background-color: mix(#e2e3e0, @shift_bg_color, 00.30); }
  notebook > header.top {
    border-style: none none solid none;
    padding-bottom: 2px;
    margin: 0; }
  notebook > header.top + * {
    margin-top: -1px; }
      notebook > header.top > tabs > tab:hover,
      notebook > header.top > tabs > tab:checked:disabled {
        box-shadow: inset 0 -3px mix(#b6b6b3, @shift_bg_color, 00.30); }
      notebook > header.top > tabs > tab:checked {
        box-shadow: inset 0 -3px @selected_bg_color; }
  notebook > header.bottom {
    border-style: solid none none none;
    padding-top: 2px;
    margin: 0; }
  notebook > header.bottom + * {
    margin-bottom: -1px; }
      notebook > header.bottom > tabs > tab:hover,
      notebook > header.bottom > tabs > tab:checked:disabled {
        box-shadow: inset 0 3px mix(#b6b6b3, @shift_bg_color, 00.30); }
      notebook > header.bottom > tabs > tab:checked {
        box-shadow: inset 0 3px @selected_bg_color; }
  notebook > header.left {
    border-style: none solid none none;
    padding-right: 2px;
    margin: 0; }
  notebook > header.left + * {
    margin-left: -1px; }
      notebook > header.left > tabs > tab:hover,
      notebook > header.left > tabs > tab:checked:disabled {
        box-shadow: inset -3px 0 mix(#b6b6b3, @shift_bg_color, 00.30); }
      notebook > header.left > tabs > tab:checked {
        box-shadow: inset -3px 0 @selected_bg_color; }
  notebook > header.right {
    border-style: none none none solid;
    padding-left: 2px;
    margin: 0; }
  notebook > header.right + * {
    margin-right: -1px; }
      notebook > header.right > tabs > tab:hover,
      notebook > header.right > tabs > tab:checked:disabled {
        box-shadow: inset 3px 0 mix(#b6b6b3, @shift_bg_color, 00.30); }
      notebook > header.right > tabs > tab:checked {
        box-shadow: inset 3px 0 @selected_bg_color; }
notebook > header > tabs,
notebook > header > tabs:disabled {
  border: none;
  box-shadow: none;
  background-image: none;
  margin: 0; }
  notebook > header.top > tabs, notebook > header.bottom > tabs {
    padding: 0 4px; }
  notebook > header.top > tabs:not(:only-child), notebook > header.bottom > tabs:not(:only-child) {
    margin-left: 3px;
    margin-right: 3px; }
  notebook > header.top > tabs:not(:only-child):first-child, notebook > header.bottom > tabs:not(:only-child):first-child {
    margin-left: -1px; }
  notebook > header.top > tabs:not(:only-child):last-child, notebook > header.bottom > tabs:not(:only-child):last-child {
    margin-right: -1px; }
notebook > header.left > tabs, notebook > header.right > tabs {
  padding: 4px 0;
  background-image: none; }
  notebook > header.left > tabs:not(:only-child), notebook > header.right > tabs:not(:only-child) {
    margin-top: 3px;
    margin-bottom: 3px; }
    notebook > header.left > tabs:not(:only-child):first-child, notebook > header.right > tabs:not(:only-child):first-child {
      margin-top: -1px; }
    notebook > header.left > tabs:not(:only-child):last-child, notebook > header.right > tabs:not(:only-child):last-child {
      margin-bottom: -1px; }
notebook > header > tabs > tab {
  min-height: 34px;
  outline-offset: -2px;
  color: mix(#444444, mix(@shift_bg_color, #444444, 0.398), 00.30);
  background-image: none;
  box-shadow: none;
  font-weight: normal;
  border-radius: 0px; }
  notebook > header.left > tabs > tab, notebook > header.right > tabs > tab {
    min-height: 32px; }
  notebook > header.top > tabs > tab,
  notebook > header.top > tabs > tab.reorderable-page {
    border: none;
    margin: 0 4px;
    padding: 0 4px 0 4px; }
  notebook > header.bottom > tabs > tab,
  notebook > header.bottom > tabs > tab.reorderable-page {
    border: none;
    margin: 0 4px;
    padding: 0 4px 0 4px; }
  notebook > header.left > tabs > tab,
  notebook > header.left > tabs > tab.reorderable-page {
    border: none;
    margin: 4px 0;
    padding: 0 7px 0 7px; }
  notebook > header.right > tabs > tab,
  notebook > header.right > tabs > tab.reorderable-page {
    border: none;
    margin: 4px 0;
    padding: 0 7px 0 7px; }
  notebook > header > tabs > tab:hover,
  notebook > header.left > tabs > tab:hover, notebook > header.right > tabs > tab:hover {
/*  color: mix(@fg_color, mix(@shift_bg_color, @fg_color, 0.398), 00.30);*/
    border-color: transparent;
    background-image: none; }
/*  notebook > header > tabs > tab:hover.reorderable-page {
    border-color: mix(#bbbbbb, @shift_bg_color, 00.30);
    background-color: mix(@shade(bg_color, 1.05), @shift_bg_color, 00.30); }*/
  notebook > header > tabs > tab:disabled, 
  notebook > header.left > tabs > tab:disabled, notebook > header.right > tabs > tab:disabled,
  notebook > header > tabs > tab:checked:disabled,
  notebook > header.left > tabs > tab:checked:disabled, notebook > header.right > tabs > tab:checked:disabled {
    background-image: none;
    border-color: transparent; }
    notebook > header > tabs > tab:disabled, 
    notebook > header.left > tabs > tab:disabled, notebook > header.right > tabs > tab:disabled {
      box-shadow: none; }
  notebook > header > tabs > tab:checked,
  notebook > header.left > tabs > tab:checked, notebook > header.right > tabs > tab:checked {
    border-color: transparent;
    background-image: image(mix(@bg_color, @shift_bg_color, 00.30));
    color: mix(@fg_color, mix(@shift_bg_color, @fg_color, 0.398), 00.30); }
/*  notebook > header > tabs > tab:checked.reorderable-page {
    border-color: mix(#bbbbbb, @shift_bg_color, 00.30);
    background-color: mix(@bg_color, @shift_bg_color, 00.30); }
      notebook > header > tabs > tab:checked.reorderable-page:hover {
      background-color: mix(shade(@bg_color, 1.05), @shift_bg_color, 00.30); }*/
notebook > header > tabs > tab button.flat {
  padding: 0;
  min-width: 18px;
  min-height: 18px;
  margin: 7px 4px 7px 4px; }
  notebook > header > tabs > tab button.flat:hover {
    color: currentColor; }
  notebook > header > tabs > tab button.flat {
    color: alpha(currentColor,0.8); }
notebook > header > tabs > arrow {
  min-height: 16px;
  min-width: 16px;
  border-radius: 0; }
  notebook > header > tabs > arrow:hover:not(:active) {
    background-clip: padding-box;
    background-image: none;
    background-color: mix(rgba(255, 255, 255, 0.3), rgba(0, 0, 0, 0.3), 00.30);
    border-color: transparent;
    box-shadow: none; }
  notebook > header > tabs > arrow:disabled {
    border-color: transparent;
    background-color: transparent;
    background-image: none;
    text-shadow: none;
    -gtk-icon-shadow: none; }
  notebook > header.top > tabs > arrow {
    border-top-style: none; }
  notebook > header.bottom > tabs > arrow {
    border-bottom-style: none; }
  notebook > header.top > tabs > arrow, notebook > header.bottom > tabs > arrow {
    margin-left: -5px;
    margin-right: -5px;
    padding-left: 4px;
    padding-right: 4px; }
  notebook > header.left > tabs > arrow {
    border-left-style: none; }
  notebook > header.right > tabs > arrow {
    border-right-style: none; }
  notebook > header.left > tabs > arrow, notebook > header.right > tabs > arrow {
    margin-top: -5px;
    margin-bottom: -5px;
    padding-top: 4px;
    padding-bottom: 4px; }
