artwork/usr/share/themes/Lubuntu-default/gtk-3.0/gtk-bars.css

/***************
 * Progressbar *
 ***************/
/* progress component */
.progressbar,
.progressbar row,
.progressbar row:hover,
.progressbar row:selected,
.progressbar row:selected:focused {
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (@progressbar_background_a),
		to (@progressbar_background_b));

	border-radius: 0;
	border-style: solid;
	border-width: 1;
	border-color: @progressbar_border;
	-unico-inner-stroke-style: custom;
	-unico-inner-stroke-gradient: -gtk-gradient (linear,
		left top, left bottom,
		from (alpha (@theme_base_color, 0.5)),
		to (alpha (shade (@button_bg_color, 1.26), 0.0)));
}

.progressbar.vertical,
.progressbar.vertical row,
.progressbar.vertical row:hover,
.progressbar.vertical row:selected,
.progressbar.vertical row:selected:focused {
	background-image: -gtk-gradient (linear,
		left top, right top,
		from (@progressbar_background_a),
		to (@progressbar_background_b));

	border-radius: 0;
	border-style: solid;
	border-width: 1;
	border-color: @progressbar_border;
	-unico-inner-stroke-style: custom;
	-unico-inner-stroke-gradient: -gtk-gradient (linear,
		left top, right top,
		from (alpha (@theme_base_color, 0.5)),
		to (alpha (shade (@button_bg_color, 1.26), 0.0)));
}

/* through component */
GtkProgressBar,
.trough row {
	padding: 0;
}

GtkProgressBar.trough,
.trough row,
.trough row:hover {
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (@progressbar_through_a),
		to (@progressbar_through_b));

	border-width: 1;
	border-style: solid;
	border-radius: 0;
	border-color: shade (@progressbar_through_border, 1.0);
}

GtkProgressBar.trough.vertical,
.trough.vertical row,
.trough.vertical row:hover {
	background-image: -gtk-gradient (linear,
		left top, right top,
		from (@progressbar_through_a),
		to (@progressbar_through_b));

	border-width: 1;
	border-style: solid;
	border-radius: 0;
	border-color: shade (@progressbar_through_border, 1.0);
}

.trough row:selected,
.trough row:selected:focused {
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (mix (@trough_bg_color_a, @theme_selected_bg_color, 0.25)),
		to (mix (@trough_bg_color_b, @theme_selected_bg_color, 0.25)));
}

.trough.vertical row:selected,
.trough.vertical row:selected:focused {
	background-image: -gtk-gradient (linear,
		left top, right top,
		from (mix (@trough_bg_color_a, @theme_selected_bg_color, 0.25)),
		to (mix (@trough_bg_color_b, @theme_selected_bg_color, 0.25)));
}

/*************
 * Scrollbar *
 *************/
/* Using the adwaita engine to fix a small consistency bug */
.scrollbar {
	engine: adwaita;
	background-image: none;
	border-style: solid;
	-GtkRange-trough-border: 1;
	-GtkRange-arrow-scaling: 0.444;
	-GtkRange-slider-width: 11;
	-GtkRange-stepper-size: 0;
	-GtkScrollbar-min-slider-length: 30;
	-GtkRange-stepper-spacing: 0;
	-GtkRange-trough-under-steppers: 1;
	-unico-inner-stroke-style: none;
}

/* Through */
.scrollbar.trough.vertical {
	engine: adwaita;
	background-image: -gtk-gradient (linear,
		left top, right top,
		from (shade (@trough_bg_color_b, 0.99)),
		to (@trough_bg_color_a));
	background-color: shade (@theme_bg_color, 0.882);
	border-width: 0;
	border-radius: 0;
	-adwaita-border-gradient: -gtk-gradient (linear,
		left top, right top,
		from (alpha (@scrollslider_gradient_a, 1.00)),
		to (alpha (@scrollslider_gradient_a, 0.00)));
	border-width: 1;
	border-style: solid;
}

.scrollbar.trough.horizontal {
	engine: adwaita;
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (shade (@trough_bg_color_b, 0.99)),
		to (@trough_bg_color_a));
	background-color: shade (@theme_bg_color, 0.882);
	border-width: 0;
	border-radius: 0;
	-adwaita-border-gradient: -gtk-gradient (linear,
		left top, left bottom,
		from (alpha (@scrollslider_gradient_a, 1.00)),
		to (alpha (@scrollslider_gradient_a, 0.00)));
	border-width: 1;
	border-style: solid;
}

/* Sliders and buttons */
.scrollbar.slider.vertical,
.scrollbar.button.vertical {
	engine: adwaita;
	background-image: -gtk-gradient (linear,
		left top, right top,
		from (@scrollslider_gradient_a),
		to (@scrollslider_gradient_b));
	background-color: @theme_base_color;
	border-color: @scrollslider_border;
	border-radius: 10;
	border-width: 1;
}

.scrollbar.slider.vertical:prelight {
	engine: adwaita;
	background-image: -gtk-gradient (linear,
		left top, right top,
		from (shade (@scrollslider_gradient_a, 0.90)),
		to (shade (@scrollslider_gradient_b, 0.90)));
	background-color: @theme_base_color;
	border-color: shade (@scrollslider_border, 0.90);
}

.scrollbar.slider.vertical:prelight:active {
	engine: adwaita;
	background-image: -gtk-gradient (linear,
		left top, right top,
		from (shade (@scrollslider_gradient_a, 0.90)),
		to (shade (@scrollslider_gradient_b, 0.90)));
	background-color: @theme_base_color;
	border-color: shade (@scrollslider_border, 0.90);
}

.scrollbar.slider.horizontal,
.scrollbar.button.horizontal {
	engine: adwaita;
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (@scrollslider_gradient_a),
		to (@scrollslider_gradient_b));
	background-color: @theme_base_color;
	border-color: @scrollslider_border;
	border-radius: 10;
	border-width: 1;
}

.scrollbar.slider.horizontal:prelight {
	engine: adwaita;
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (shade (@scrollslider_gradient_a, 0.90)),
		to (shade (@scrollslider_gradient_b, 0.90)));
	background-color: @theme_base_color;
	border-color: shade (@scrollslider_border, 0.90);
}

.scrollbar.slider.horizontal:prelight:active {
	engine: adwaita;
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (shade (@scrollslider_gradient_a, 0.90)),
		to (shade (@scrollslider_gradient_b, 0.90)));
	background-color: @theme_base_color;
	border-color: shade (@scrollslider_border, 0.90);
}

.scrollbar.slider:insensitive {
	engine: adwaita;
	background-color: @theme_base_color;
}

.scrollbar.trough:insensitive {
	engine: adwaita;
	background-color: shade (@theme_bg_color, 0.882);
}

/************
 * Toolbars *
 ************/
.primary-toolbar.toolbar {
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (@toolbar_gradient_base),
		to (@toolbar_gradient_final));
	-unico-border-gradient: -gtk-gradient (linear, left top, left bottom,
		from (alpha (@toolbar_border, 0.0)),
		to (alpha (@toolbar_border, 1.0)));
	border-style: solid;
	border-width: 1;
	-GtkWidget-window-dragging: true;
	padding: 2;	
}

.toolbar {
	border-style: solid;
	border-color: @theme_bg_color;
	border-width: 0;
	border-radius: 0;
	padding: 1;
}

.toolbar:insensitive {
	color: alpha (@theme_fg_color, 0.6);
}

/* Toolbar buttons */

.primary-toolbar.toolbar.button {
	padding: 0 2;
	border-style: none;
	border-width: 1;
	border-radius: 2;
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (alpha (@button_gradient_color_a, 0.0)),
		to (alpha (@button_gradient_color_b, 0.0)));
	-unico-inner-stroke-style: none;
	-unico-outer-stroke-style: none;
}

.primary-toolbar.toolbar.button:insensitive {
	border-style: none;
	border-width: 0;
	color: @insensitive_fg_color;
	background-image: none;
	background-color: alpha (@theme_base_color, 0.0);
	-GtkWidget-focus-line-width: 0;
}

.primary-toolbar.toolbar.button:hover {
	border-style: none;
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (alpha (@button_hover_gradient_color_a, 0.60)),
		to (alpha (@button_hover_gradient_color_b, 0.60)));
	border-radius: 2;
	-unico-border-gradient: -gtk-gradient (linear,
		left top, left bottom,
		from (shade (@theme_border_color_a, 1.10)),
		to (shade (@theme_border_color_b, 1.10)));
}

.primary-toolbar.toolbar.button:active {
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (shade (@button_active_gradient_color_a, 1.00)),
		to (shade (@button_active_gradient_color_b, 1.00)));
	border-color: @highlighted_border;
	border-style: solid;
	-unico-border-gradient: -gtk-gradient (linear,
		left top, left bottom,
		from (shade (@theme_border_color_b, 1.00)),
		to (shade (@theme_border_color_a, 1.00)));
	color: @theme_fg_color;
}

.primary-toolbar.toolbar.button:active:hover {
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (shade (@button_active_gradient_color_a, 1.10)),
		to (shade (@button_active_gradient_color_b, 1.10)));
	border-color: @highlighted_border;
	border-style: solid;
	-unico-border-gradient: -gtk-gradient (linear,
		left top, left bottom,
		from (shade (@theme_border_color_b, 1.10)),
		to (shade (@theme_border_color_a, 1.10)));
	color: @theme_fg_color;
}

.primary-toolbar.toolbar.button:active:insensitive {
	border-color: @insensitive_border_color;
	-unico-border-gradient: none;
	background-image: none;
	-unico-inner-stroke-style: none;
}

.primary-toolbar.toolbar.raised.button {
	border-width: 1;
	border-style: solid;

	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (@button_gradient_color_a),
		to (@button_gradient_color_b));

	-unico-border-gradient: -gtk-gradient (linear,
		left top, left bottom,
		from (shade (@theme_border_color_a, 1.00)),
		to (shade (@theme_border_color_b, 1.00)));
}

.primary-toolbar.toolbar.raised.button:insensitive {
	background-image: none;
}

.primary-toolbar.toolbar.raised.button:hover {
	border-color: @button_border;
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (@button_hover_gradient_color_a),
		to (@button_hover_gradient_color_b));

	-unico-border-gradient: -gtk-gradient (linear,
		left top, left bottom,
		from (shade (@theme_border_color_a, 1.10)),
		to (shade (@theme_border_color_b, 1.10)));
	border-width: 1;
	border-style: solid;
}

.primary-toolbar.toolbar.raised.button:hover:active,
.primary-toolbar.toolbar.raised.button:active {
	background-image: -gtk-gradient (linear,
		left top, left bottom,
		from (@button_active_gradient_color_a),
		to (alpha (@button_active_gradient_color_b, 0.13)));
	background-color: @theme_base_color;

	border-color: @highlighted_border;
	border-width: 1;
	border-style: solid;
}

.primary-toolbar.toolbar.raised.button:insensitive:active {
	border-style: solid;
	border-width: 1;
	background-image: none;
}