// .modal-open      - body class for killing the scroll
// .modal           - container to scroll within
// .modal-dialog    - positioning shell for the actual modal
// .modal-content   - actual modal w/ bg and corners and stuff


// Kill the scroll on the body
.modal-open {
	overflow: hidden;
}

// Container that the modal scrolls within
.modal {
	position: fixed;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	z-index: @zindex-modal;
	display: none;
	overflow: hidden;
	// Prevent Chrome on Windows from adding a focus outline. For details, see
	// https://github.com/twbs/bootstrap/pull/10951.
	outline: 0;
	// We deliberately don't use `-webkit-overflow-scrolling: touch;` due to a
	// gnarly iOS Safari bug: https://bugs.webkit.org/show_bug.cgi?id=158342
	// See also https://github.com/twbs/bootstrap/issues/17695

	.modal-open & {
		overflow-x: hidden;
		overflow-y: auto;
	}
}

// Shell div to position the modal with bottom padding
.modal-dialog {
	position: relative;
	width: auto;
	margin: @modal-dialog-margin;
	// allow clicks to pass through for custom click handling to close modal
	pointer-events: none;

	// When fading in the modal, animate it to slide down
	.modal.fade & {
		#transition(@modal-transition);
		transform: translate(0, -25%);
	}
	.modal.show & {
		transform: translate(0, 0);
	}
}

.modal-dialog-centered {
	display: flex;
	align-items: center;
	min-height: ~"calc(100% - (@{modal-dialog-margin} * 2))";
}

// Actual modal
.modal-content {
	position: relative;
	display: flex;
	flex-direction: column;
	width: 100%; // Ensure `.modal-content` extends the full width of the parent `.modal-dialog`
	// counteract the pointer-events: none; in the .modal-dialog
	pointer-events: auto;
	background-color: @modal-content-bg;
	background-clip: padding-box;
	border: @modal-content-border-width solid @modal-content-border-color;
	#border-radius(@modal-content-border-radius);
	#box-shadow(@modal-content-box-shadow-xs);
	// Remove focus outline from opened modal
	outline: 0;
}

// Modal background
.modal-backdrop {
	position: fixed;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	z-index: @zindex-modal-backdrop;
	background-color: @modal-backdrop-bg;

	// Fade for backdrop
	&.fade { opacity: 0; }
	&.show { opacity: @modal-backdrop-opacity; }
}

// Modal header
// Top section of the modal w/ title and dismiss
.modal-header {
	display: flex;
	align-items: flex-start; // so the close btn always stays on the upper right corner
	justify-content: space-between; // Put modal header elements (title and dismiss) on opposite ends
	padding: @modal-header-padding;
	border-bottom: @modal-header-border-width solid @modal-header-border-color;
	#border-top-radius(@modal-content-border-radius);

	.close {
		padding: @modal-header-padding;
		// auto on the left force icon to the right even when there is no .modal-title
		margin: -@modal-header-padding -@modal-header-padding -@modal-header-padding auto;
	}
}

// Title text within header
.modal-title {
	margin-bottom: 0;
	line-height: @modal-title-line-height;
}

// Modal body
// Where all modal content resides (sibling of .modal-header and .modal-footer)
.modal-body {
	position: relative;
	// Enable `flex-grow: 1` so that the body take up as much space as possible
	// when should there be a fixed height on `.modal-dialog`.
	flex: 1 1 auto;
	padding: @modal-inner-padding;
}

// Footer (for actions)
.modal-footer {
	display: flex;
	align-items: center; // vertically center
	justify-content: flex-end; // Right align buttons with flex property because text-align doesn't work on flex items
	padding: @modal-inner-padding;
	border-top: @modal-footer-border-width solid @modal-footer-border-color;

	// Easily place margin between footer elements
	> :not(:first-child) { margin-left: 0.25rem; }
	> :not(:last-child) { margin-right: 0.25rem; }
}

// Measure scrollbar width for padding body during modal show/hide
.modal-scrollbar-measure {
	position: absolute;
	top: -9999px;
	width: 50px;
	height: 50px;
	overflow: scroll;
}

// Scale up the modal
#media-breakpoint-up(sm, {
	// Automatically set modal's width for larger viewports
	.modal-dialog {
		max-width: @modal-md;
		margin: @modal-dialog-margin-y-sm-up auto;
	}

	.modal-dialog-centered {
		min-height: ~"calc(100% - (@{modal-dialog-margin-y-sm-up} * 2))";
	}

	.modal-content {
		#box-shadow(@modal-content-box-shadow-sm-up);
	}

	.modal-sm { max-width: @modal-sm; }

});

#media-breakpoint-up(lg, {
	.modal-lg { max-width: @modal-lg; }
});