$panel-margin: $block-spacing !default;
$panel-item-border: 1px solid $border-light !default;
$panel-radius: $radius-large !default;
$panel-shadow: 0 0.5em 1em -0.125em rgba($scheme-invert, 0.1), 0 0px 0 1px rgba($scheme-invert, 0.02) !default;
$panel-heading-background-color: $border-light !default;
$panel-heading-color: $text-strong !default;
$panel-heading-line-height: 1.25 !default;
$panel-heading-padding: 0.75em 1em !default;
$panel-heading-radius: $radius !default;
$panel-heading-size: 1.25em !default;
$panel-heading-weight: $weight-bold !default;
$panel-tabs-font-size: 0.875em !default;
$panel-tab-border-bottom: 1px solid $border !default;
$panel-tab-active-border-bottom-color: $link-active-border !default;
$panel-tab-active-color: $link-active !default;
$panel-list-item-color: $text !default;
$panel-list-item-hover-color: $link !default;
$panel-block-color: $text-strong !default;
$panel-block-hover-background-color: $background !default;
$panel-block-active-border-left-color: $link !default;
$panel-block-active-color: $link-active !default;
$panel-block-active-icon-color: $link !default;
$panel-icon-color: $text-light !default;