numix-gtk-theme/gtk-3.0/scss/_menu.scss

@import "functions";
@import "entry";

GtkTreeMenu, GtkMenuToolButton, GtkComboBox {
    &.menu, .menu {
        background-color: $menu_bg_color;
        margin: $spacing;
    }
}

#toolbar-popup, .menu {
    padding: 0;
    border-radius: 0;
    border-style: none;
    background-color: $menu_bg_color;
    color: $menu_fg_color;

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

    .button {
        &, &:hover, &:active, &:active *:insensitive, &:insensitive {
            border-width: 0;
            background-color: transparent;
            background-image: none;
        }
    }
}

.context-menu { font: initial; }

.menuitem {
    GtkTreeMenu & {
        padding: 0;
        border-width: 0;
    }

    &, .menu & {
        padding: $spacing;
        border-width: 1px;
        border-style: solid;
        border-color: transparent;
        border-radius: 0;
        background-color: transparent;
        background-image: none;

        -GtkMenuItem-arrow-scaling: 0.5;

        &:active, &:hover {
            border-color: shade($selected_bg_color, .9);
            background-color: $selected_bg_color;
            background-image: none;
            color: $selected_fg_color;
        }

        & *:active, & *:hover { color: $selected_fg_color; }

        &:insensitive, & *:insensitive { color: mix($menu_fg_color, $menu_bg_color, .5); }
    }

    &.check, &.radio {
        &, &:focus, &:hover, &:insensitive { background-image: none; }

        &, &:focus, &:hover, &:active, &:insensitive {
            border-style: none;
            background-color: transparent;
        }
    }

    &.separator {
        -GtkMenuItem-horizontal-padding: 0;
        -GtkWidget-separator-height: 1;

        border-style: none;
        color: shade($menu_bg_color, .9);
    }

    &.button {
        &, &:active, &:insensitive, &:active:insensitive {
            background-color: transparent;
            background-image: none;
            border-color: transparent;
            border-style: none;
            box-shadow: none;
            color: currentColor;
        }

        &:hover, &:active:hover, &:selected {
            background-color: $selected_bg_color;
            background-image: none;
            color: $selected_fg_color;
        }
    }

    GtkCalendar {
        &:inconsistent { color: mix($menu_fg_color, $menu_bg_color, .5); }

        .button {
            border-style: none;
            background-color: transparent;
            background-image: none;
        }
    }

    .accelerator {
        color: alpha($menu_fg_color, .6);

        &:hover { color: alpha($selected_fg_color, .8); }

        &:insensitive { color: alpha(mix($menu_fg_color, $menu_bg_color, .5), .4); }
    }

    .entry { @include entry($menu_bg_color, $menu_fg_color); }
}

GtkModelMenuItem GtkBox GtkImage { padding-right: $spacing; }

GtkPopover {
	@include border($menu_bg_color);

    margin: 10px;
    padding: $spacing;
    border-radius: $roundness;
    border-width: 1px;
    border-style: solid;
    background-clip: border-box;
    background-color: $menu_bg_color;
    color: $menu_fg_color;
    box-shadow: 0 2px 3px alpha(black, .5);

    &:backdrop { box-shadow: none; }

    &.osd {
        box-shadow: 0 2px 7px 3px alpha(black, .5);

        > .toolbar .button {
            border-radius: 0;
            border-width: 0;
            background-image: none;
            background-color: transparent;
        }
    }

    > .list, > .view, > .toolbar { background-color: transparent; }

    .separator {
        border: 0;
        background-color: transparent;
        color: alpha($menu_bg_color, .5);
        font-size: 80%;
        font-weight: bold;
    }
}