@use '../variable';

/*-----------------------*
		stack
*-----------------------*/
:root {
	--const-stack: #{variable.$default-stack};
	--stack-top: #{variable.$default-stack};
	--stack-bottom: 0;
	--first-stack-top: 0;
	--first-stack-bottom: 0;
	--last-stack-top: 0;
	--last-stack-bottom: 0;
}

.first-stack,
%first-stack {
	margin-top: var(--first-stack-top, unset);
	margin-bottom: var(--first-stack-bottom, unset);
}

.stack,
%stack {
	margin-top: var(--stack-top, unset);
	margin-bottom: var(--stack-bottom, unset);
}

.last-stack,
%last-stack {
	margin-top: var(--last-stack-top, unset);
	margin-bottom: var(--last-stack-bottom, unset);
}

.stack-multi--by2,
%stack-multi--by2 {
	margin-top: calc(var(--first-stack-top, unset) * 2);
	margin-bottom: calc(var(--first-stack-bottom, unset) * 2);
}

.stack-multi--by4,
%stack-multi--by4 {
	margin-top: calc(var(--first-stack-top, unset) * 4);
	margin-bottom: calc(var(--first-stack-bottom, unset) * 4);
}

.stack-divi--by2,
%stack-divi--by2 {
	margin-top: calc(var(--first-stack-top, unset) / 2);
	margin-bottom: calc(var(--first-stack-bottom, unset) / 2);
}

.none-stack,
%none-stack {
	margin-top: 0;
}

.unset-stack,
%unset-stack {
	margin-top: unset;
}

.reverse-stack
%reverse-stack {
	margin-top: var(--stack-bottom, unset);
	margin-bottom: var(--stack-top, unset);
}