@mixin headerbar_buttons($bg, $fg, $br)
{
  @include normal_buttons($bg, $fg, $br);
}

@mixin headerbar() {
  headerbar {
    padding: 4px 8px;
    min-height: 32px;
    color: $titlebar_fg_color;
    background-color: $titlebar_bg_color;
    border-bottom: 1px solid $borders;

    &:backdrop {
      background-color: $unfocused_bg_color;
      color: $unfocused_fg_color;
      border-bottom-color: $unfocused_borders;
    }

    .tiled &, .tiled &:backdrop,
    .maximized &, .maximized &:backdrop {
      border-radius: 0;
    }
    
    // Fixes split headerbars
    separator:first-child + &,
    &:first-child {
      &, &:backdrop {
        border-top-left-radius: $csd_radius;

        .maximized &,
        .tiled & { border-radius: 0; }
      }
    }

    &:last-child {
      &, &:backdrop {
        border-top-right-radius: $csd_radius;

        .maximized &,
        .tiled & { border-radius: 0; }
      }
    }

    .title {
      padding-left: 12px;
      padding-right: 12px;
      font-weight: bold;
    }

    .subtitle {
      font-size: smaller;
      padding-left: 12px;
      padding-right: 12px;
      color: gtkalpha(currentColor, 0.7);
    }
    
    button {
      @include headerbar_buttons($headerbar_bg_color, $headerbar_fg_color, $borders);
    }

    entry { padding: 4px 8px; }
    &.titlebar, .titlebar & { border-radius: $csd_radius $csd_radius 0px 0px; }

    .titlebutton {
      &.close, &.maximize, &.minimize, &:not(separator) {
        padding: 7px 14px;
        border: none;
        color: transparent;
        background-color: transparent;
        -gtk-icon-shadow: none;
        
        background-size:  100% 100%;
        background-position: center;
        background-repeat: no-repeat;
        
        &:hover { background-color: gtkalpha($fg_color, 0.15); }
        &:active { background-color: gtkalpha($fg_color, 0.3); }
      }
      
      &.close {
        background-image: url('assets/close-focused.png');

        &:hover {
          background-color: #ff5252;
          background-image: url('assets/close-focused-active.png');
        }

        &:active {
          background-color: #ff0000;
          background-image: url('assets/close-focused-active.png');
        }

        &:backdrop {
          background-image: url('assets/close-unfocused.png');
          
          &:hover {
            background-color: #ff5252;
            background-image: url('assets/close-focused-active.png');
          }

          &:active {
            background-color: #ff0000;
            background-image: url('assets/close-focused-active.png'); }
        }
      }

      &.minimize {
        background-image: url('assets/minimize-focused.png');

        &:hover { background-image: url('assets/minimize-focused.png'); }
        &:active { background-image: url('assets/minimize-focused.png'); }

        &:backdrop {
          background-image: url('assets/minimize-unfocused.png');

          &:hover { background-image: url('assets/minimize-focused.png'); }
          &:active { background-image: url('assets/minimize-focused.png'); }
        }
      }

      &.maximize {
        background-image: url('assets/maximize-focused.png');

        &:hover { background-image: url('assets/maximize-focused.png'); }
        &:active { background-image: url('assets/maximize-focused.png'); }

        &:backdrop {
          background-image: url('assets/maximize-unfocused.png');

          &:hover { background-image: url('assets/maximize-focused.png'); }
          &:active { background-image: url('assets/maximize-focused.png'); }
        }
      }
      
      .maximized &.maximize {
        background-image: url('assets/restore-focused.png');

        &:hover { background-image: url('assets/restore-focused.png'); }
        &:active { background-image: url('assets/restore-focused.png'); }

        &:backdrop {
          background-image: url('assets/restore-unfocused.png');

          &:hover { background-image: url('assets/restore-focused.png'); }
          &:active { background-image: url('assets/restore-focused.png'); }
        }
      }
    }
  }
}
