/**********************************************************************
* 
*
*
**********************************************************************/

@import '../node_modules/material-symbols/outlined.css';


/********************************************************* Config ****/

:root {
	/* dimensions */
	--gallery-image-base-height: 18rem;
	--gallery-image-spacing: 0rem;
	--gallery-current-image-border: 0.7rem;
	--gallery-padding: 3rem;
	--gallery-scrollbar-width: 0.5rem;

	--toolbar-button-size: 2rem;

	--lightbox-frame: 5vmin;
	--lightbox-image-margin-top: 0.75;
	--lightbox-button-size: 2rem;

	/* theme */
	--gallery-text-color: black;
	--gallery-secondary-color: silver;
	--gallery-shade-color: whitesmoke;
	--gallery-background-color: white;
	--gallery-accent-color: white;
	--gallery-secondary-accent-color: white;

	--lightbox-text-color: black;
	--lightbox-background-color: white;
	/*--lightbox-background-color: rgba(0,0,0,0.8);*/

	--color-transition: 1s;


	/* base font size... */
	/* XXX can we use this as the basis for sizing for different devices??? */
	font-size: 5mm;
}
/* calculated values... */
/* NOTE: these need to be separeated from the :root values to recalculate... */
body {
	--gallery-image-margin: calc(var(--gallery-image-spacing) / 2);
	--gallery-padding-horizontal: var(--gallery-padding);
	--gallery-padding-vertical: var(--gallery-current-image-border);
	--gallery-padding-top: var(--gallery-padding-vertical);
	--gallery-padding-bottom: var(--gallery-padding-vertical);
	--gallery-padding-left: var(--gallery-padding-horizontal);
	--gallery-padding-right: var(--gallery-padding-horizontal);
	--gallery-image-scroll-margin: calc(2 * var(--gallery-current-image-border));
	--gallery-empty-height: var(--gallery-image-base-height);
	--scrollbar-color: var(--gallery-secondary-color);
}



.gallery-dark {
	--gallery-text-color: silver;
	--gallery-secondary-color: gray;
	--gallery-shade-color: rgb(50,50,50);
	--gallery-background-color: rgb(10,10,10);
}

.lightbox-dark {
	--lightbox-text-color: silver;
	--lightbox-background-color: rgb(10,10,10);
}
/* XXX to make the lightbox scrolbar work correctly we need to set the 
* 		body colors -- :has(..) does not yet work on FF .... */
.lightbox-dark.lightboxed,
.lightbox-dark:has(.lightboxed) {
	--gallery-background-color: var(--lightbox-background-color);
	--gallery-text-color: var(--lightbox-text-color);
	overflow: hidden;
}



/****************************************************** Scrolling ****/

::-webkit-scrollbar {
	width: var(--gallery-scrollbar-width);
}
::-webkit-scrollbar-track {
	background-color: transparent;
	border-radius: 100px;
}
::-webkit-scrollbar-thumb {
	background-color: var(--scrollbar-color);
	border-radius: 100px;
}
body {
	overflow-y: scroll;
	/* XXX these for some reason do not work in FF... */
	scrollbar-width: thin;
	scrollbar-color: transparent var(--gallery-secondary-color);

	color: var(--gallery-text-color);
	background: var(--gallery-background-color);

	transition:
		text-shadow var(--color-transition) ease,
		background var(--color-transition) ease,
		color var(--color-transition) ease;
}
button {
	color: var(--gallery-text-color);
	background: var(--gallery-background-color);
	border: solid 1px var(--gallery-secondary-color);

	transition:
		text-shadow var(--color-transition) ease,
		background var(--color-transition) ease,
		color var(--color-transition) ease;
}
button:hover {
	background: var(--gallery-shade-color);
	border: solid 1px var(--gallery-text-color);
}
button:active {
	background: var(--gallery-secondary-color);
	border: solid 1px var(--gallery-text-color);
}


/******************************************************** Gallery ****/

/* XXX need to account for scrollbar popping in and out */
.gallery {
	--base-layer: 10;

	position: relative;

	padding-top: var(--gallery-padding-top);
	padding-bottom: var(--gallery-padding-bottom);
	padding-left: calc(
		var(--gallery-scrollbar-width) 
		+ var(--gallery-padding-left) );
	padding-right: var(--gallery-padding-right);

	color: var(--gallery-text-color);
	background: var(--gallery-background-color);
	font-family: sans-serif;

	overflow-x: clip;

	transition:
		text-shadow var(--color-transition) ease,
		background var(--color-transition) ease,
		color var(--color-transition) ease;
}
.gallery .images {
	position: relative;
	display: flex;
	justify-content: flex-start;
	align-content: flex-start;
	flex-flow: row wrap;
}

/* empty... */
.gallery .images:empty {
	height: var(--gallery-empty-height);
	border: dashed 1px var(--gallery-secondary-color);
}
.gallery .images:empty:after,
.gallery .images:empty:before {
	--font-size: 1.5rem;

	position: absolute;
	width: 100%;
	left: 0;
	top: 0;
	line-height: var(--gallery-empty-height);
	text-align: center;
	opacity: 0.6;
}
.gallery .images:empty:before {
	content: "Empty";
	font-size: var(--font-size);
}
.gallery .images:empty:after {
	content: "(drag new images here)";
	font-size: small;
	margin-top: calc(var(--font-size) / 1.3);
	opacity: 0.4;
}

/* empty otter... */
.gallery.otter .images:empty:before,
.gallery.otter .images:empty:after {
	--font-size: 2em;
}
.gallery.otter .images:empty:before {
	content: "🦦";
	filter: saturate(0) contrast(200%);
}
.gallery.otter .images:empty:after {
	margin-top: calc(var(--font-size) / 1.5);
}

/* image... */
.gallery .images img {
	height: var(--gallery-image-base-height);
	width: auto;

	border: solid var(--gallery-image-margin) transparent;
	box-sizing: border-box;

	scroll-margin: var(--gallery-image-scroll-margin);

	image-rendering: crisp-edges;

	cursor: pointer;
}
.gallery:not(.lightboxed) .images img:not(.current):hover {
	z-index: calc(var(--base-layer) + 1);
	outline: solid calc(var(--gallery-current-image-border) / 5) var(--gallery-accent-color);
	box-shadow: 0.2em 0.2em 1em 0em rgba(0,0,0,0.8);
}

/* current image... */
.gallery .images img.current {
	z-index: 10;
	outline: solid var(--gallery-current-image-border) var(--gallery-accent-color);
	box-shadow: 0.4em 0.4em 2em 0em rgba(0,0,0,0.8);
}
.gallery:not(.lightboxed) .images img.current:hover {
	z-index: calc(var(--base-layer) + 1);
	outline: solid var(--gallery-current-image-border) var(--gallery-secondary-accent-color);
	box-shadow: 0.6em 0.6em 3em 0em rgba(0,0,0,0.8);
}


/* dragged image... */
.gallery .images img.dragged {
}
.gallery .images:has(.dragged) img:not(.dragged) {
}

/* image dragged over... */
.gallery.dragged-over .images img {
	filter: saturate(0) brightness(0.4);
}
.gallery .images img.dragged-over {
	z-index: calc(var(--base-layer) + 1);
	border-left: none;
	margin-left: var(--gallery-image-margin);
	box-shadow: 
		calc(var(--gallery-current-image-border) * -1) 0px 0px 0px rgba(0,0,0,0.8),
		/* XXX this does not work... */
		inset var(--gallery-current-image-border) 0px 0px 0px rgba(0,0,0,0.8);
}

/* image marked for removal... */
.gallery .images img.to-remove {
	opacity: 0.3;
	filter: saturate(0);
}




/*************************************************** Image markers ***/

.gallery .images img+.mark {
	z-index: var(--base-layer);
	position: relative;
}
.gallery .images img:hover+.mark {
	z-index: calc(var(--base-layer) + 1);
}
.gallery.lightboxed .images img:not(.current)+.mark {
	display: none;
}
.gallery.lightboxed .images img.current+.mark {
	z-index: calc(var(--base-layer) + 1);
	position: fixed;
	bottom: 0;
	right: 0;
}

/* marker: marked */
.gallery .images img+.mark.marked:after {
	content: "";
	position: absolute;
	display: block;
	width: 1em;
	height: 1em;
	right: 0.5em;
	bottom: 0.5em;
	border-radius: 50%;

	background: blue;

	box-shadow: 0em 0em 0em 0.05em rgba(255,255,255,1);

	cursor: pointer;
}



/******************************************************** Toolbar ****/

/* NOTE: this is used as a reference element to place the toolbars 
* 		relative to... */
.gallery .toolbar-anchor {
	position: sticky;

	top: 0;
	height: 0;
	margin: 0 calc(var(--gallery-padding-horizontal) * -1);
	overflow: visible;

	z-index: calc(var(--base-layer) + 2);
}

/* XXX make the toolbar contextual... */
.gallery .toolbar {
	--move-x: 0;
	--move-y: 0;

	--padding: 0.5rem;
	--height: calc((var(--toolbar-button-size) + var(--padding) * 2));

	/*position: absolute;*/
	position: relative;
	display: inline-block;

	left: var(--move-x);
	top: var(--move-y);

	width: fit-content;
	min-height: var(--toolbar-button-size);

	margin: 0.1em 0px;

	padding: var(--padding);
	padding-right: var(--height);
	padding-left: var(--height);

	/*scroll-margin: var(--gallery-image-scroll-margin);*/

	translate: 0 0;

	border: solid 1px var(--gallery-secondary-color);
	border-radius: calc(var(--height) / 8);
	background: var(--gallery-background-color);

	box-shadow: 0.2em 0.2em 0.5em -0.3em rgba(0,0,0,0.8);

	transition: 
		left 0.2s,
		padding-right 0.2s,
		opacity 0.2s,
		translate 0.2s,
		text-shadow var(--color-transition) ease,
		background var(--color-transition) ease,
		color var(--color-transition) ease;

	user-select: none;
}
/* XXX need to hide parts of the toolbar and make it transparent... */
.gallery.lightboxed .toolbar,
.gallery.detailed .toolbar {
	display: none;
}

/* moving toolbar... */
.gallery .toolbar.moving {
	transition: none;
}

/* fixed toolbar... */
.gallery .toolbar.fixed {
	padding-left: var(--padding);
}
.gallery .toolbar.fixed .drag-handle {
	display: none;
}

/* sticky toolbar indicator... */
.gallery .toolbar.sticky:after {
	content: "lock";

	display: block;
	position: absolute;
	bottom: 0;
	right: 0;
	padding: calc(var(--toolbar-button-size) / 10);

	font-family: "Material Symbols Outlined";
	font-size: small;
	font-weight: bold;

	opacity: 0.3;

	pointer-events: none;
}

/* collapsed toolbar (default)... */
/* XXX shoud the toolbar be vertical??? */
.gallery .toolbar:not(.shown) {
	translate: calc(-100% + var(--toolbar-button-size) + var(--padding) / 2) 0;

	left: 0;

	/*padding-right: calc(var(--padding) / 5);*/
	padding-right: var(--height);
}
.gallery .toolbar:not(.shown):not(:hover) {
	box-shadow: none;

	z-index: var(--base-layer);
	animation: 0.5s steps(1) tuck-to-backgroud;
}
@keyframes tuck-to-backgroud {
	0% {
		z-index: calc(var(--base-layer) + 2);
	}
	100% {
		z-index: var(--base-layer);
	}
}



/* groups... */
.gallery .toolbar>* {
	display: inline-block;
	height: calc(100% - var(--padding) * 2);
}
.gallery .toolbar>*:not(:last-child):after {
	content: "";
	display: inline-block;
	position: absolute;
	top: var(--padding);
	bottom: var(--padding);
	margin-left: calc(var(--padding) / 4);
	border-right: solid 1px var(--gallery-secondary-color);
}

/* state list (group)... */
.gallery .toolbar .states:empty {
	display: inline-block;
}
.gallery .toolbar .states:empty:before {
	content: "Empty...";
	font-family: sans-serif;
	line-height: var(--toolbar-button-size);
	text-align: center;
	vertical-align: bottom;
	padding: 0 0.5em;
	opacity: 0.3;
}


/* buttons... */
.gallery .button,
.gallery .toolbar button {
	min-width: var(--toolbar-button-size);

	border: solid 1px transparent;
	background: transparent;

	font-family: "Material Symbols Outlined";
	font-size: var(--toolbar-button-size); 
	line-height: var(--toolbar-button-size);
	font-weight: 300;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	text-rendering: optimizeLegibility;
	font-feature-settings: "liga";   

	text-align: center;

	color: var(--gallery-text-color);

	transition:
		text-shadow var(--color-transition) ease,
		background var(--color-transition) ease,
		color var(--color-transition) ease;
}
.gallery .toolbar button.collapse:after,
.gallery .toolbar button sec {
	display: inline-block;
	position: relative;

	left: 0;
	bottom: calc(var(--toolbar-button-size) / -6);
	margin-left: calc(var(--toolbar-button-size) / -1.5625);
	margin-right: -0.15em;

	font-size: calc(var(--toolbar-button-size) / 1.15);

	/* XXX HACK: might be better to use SVG for this... */
	text-shadow: 
		0em 0.05em 0px var(--gallery-background-color),
		0.05em 0em 0px var(--gallery-background-color),
		-0.05em 0em 0px var(--gallery-background-color),
		0em -0.05em 0px var(--gallery-background-color),
		0.05em 0.05em 0px var(--gallery-background-color),
		-0.05em -0.05em 0px var(--gallery-background-color),
		-0.05em 0.05em 0px var(--gallery-background-color),
		0.05em -0.05em 0px var(--gallery-background-color);

	transition:
		text-shadow var(--color-transition) ease,
		background var(--color-transition) ease,
		color var(--color-transition) ease;
}
/* collapse indicator... */
.gallery .toolbar button.collapse:after {
	content: "keyboard_double_arrow_left";
}
.gallery .toolbar button.collapse:after {
	transition: 
		rotate 0.2s,
		text-shadow var(--color-transition) ease,
		background var(--color-transition) ease,
		color var(--color-transition) ease;
}
.gallery .toolbar:not(.shown) button.collapse:after {
	rotate: 180deg;
}

.gallery .toolbar button:hover {
	border-radius: calc(var(--toolbar-button-size) / 5);
	border-color: var(--gallery-secondary-color);
}



.gallery .toolbar .states button {
	font-family: sans-serif;
	line-height: var(--toolbar-button-size);
	text-align: center;
	vertical-align: bottom;
}



/* button: collapse... */
.gallery .toolbar button.collapse {
	position: absolute;
	height: 100%;
	top: 0;
	right: 0;

	opacity: 0.4;

}
.gallery .toolbar button.collapse:hover {
	opacity: 1;
	border-color: transparent;
}

.gallery .toolbar button.drag-handle {
	position: absolute;
	height: calc(100% - var(--padding) * 2);
	top: 0;
	left: 0;
	margin-top: var(--padding);
	margin-bottom: var(--padding);

	font-family: "Material Symbols Outlined";
	font-size: var(--toolbar-button-size); 
	line-height: var(--toolbar-button-size);
	font-weight: 300;

	cursor: pointer;

	color: var(--gallery-secondary-color);
}
.gallery .toolbar .drag-handle:hover {
	border-top-color: transparent;
	border-left-color: transparent;
	border-bottom-color: transparent;
}



/******************************************************* Overlays ****/

.gallery.lightboxed,
.gallery.detailed {
	--base-layer: 100;
}
.gallery.lightboxed .lightbox,
.gallery.detailed .details {
	display: block;
}

.gallery .lightbox,
.gallery .details {
	display: none;
	position: fixed;
	width: 100%;
	height: 100%;
	top: 0px;
	left: 0px;
	z-index: var(--base-layer);

	text-align: center;

	color: var(--gallery-text-color);
	background: var(--gallery-background-color);
}


/*------------------------------------------------------ Lightbox ---*/

.gallery .lightbox {
	color: var(--lightbox-text-color);
	background: var(--lightbox-background-color);
}
.gallery .lightbox.show-caption:before {
	content: attr(caption);
	position: absolute;
	bottom: 0.5em;
	left: 0.5em;
}
.gallery .lightbox.clickable {
	cursor: pointer;
}
/* XXX add metadata display... */
.gallery .lightbox img {
	object-fit: contain;
	width: calc(
		100vw 
		- var(--lightbox-frame) * 2);
	height: calc(
		100vh 
		- var(--lightbox-frame) * 2);
	margin-top: calc(
		var(--lightbox-frame) 
		* var(--lightbox-image-margin-top)); 
}


/*------------------------------------------------------- Details ---*/

.gallery .details img {
	width: 20em;
	height: 20em;
	padding: 0.5em;
	object-fit: contain;
	border: solid 1px black;
}


/******************************************************* Controls ****/
/* XXX these are only used in the lightbox... */

.gallery .buttons {
	display: flex;
	position: absolute;
	top: 0;
	right: 0;
}
.gallery .button {
	disbplay: inline-block;
	cursor: pointer;
	width: var(--lightbox-button-size);
	height: var(--lightbox-button-size);
	margin: 0.2em;

	font-size: var(--lightbox-button-size);
	line-height: var(--lightbox-button-size);

	color: var(--lightbox-text-color);
	filter: saturate(0);
	
	opacity: 0.1;
}
.gallery .button:hover {
	opacity: 1;
	filter: saturate(1);
	color: var(--lightbox-text-color);
	transition: none;
}

/* specific controls */
.gallery .button.close:after {
	content: "close";
}
.gallery .button.fullscreen:after {
	content: "fullscreen";
}
.gallery .button.info:after {
	content: "info";
}
.gallery .button.prev:after {
	content: "navigate_before";
}
.gallery .button.next:after {
	content: "navigate_next";
}



/********************************************************* Splash ****/

.gallery .loading {
	position: absolute;
	display: block;

	top: 0;
	left: 0;
	width: 100%;
	height:100%;

	text-align: center;

	z-index: calc(var(--base-layer) * 2);

	background: var(--gallery-background-color);
	opacity: 0.5;
}
.gallery.ready .loading {
    animation: fadeOutAnimation ease 2s;
    animation-iteration-count: 1;
    animation-fill-mode: forwards;
	pointer-events: none;
}
@keyframes fadeOutAnimation {
	0% {
		opacity: 1;
	}
	100% {
		opacity: 0;
		visibility: hidden;
	}
}

.gallery.ready .loading * {
	display: none;
}

/* loading bar animation... */
.gallery .loading>div {
	--bar-size: 0.2rem;

	position: sticky;
	top: var(--bar-size);
	height: var(--bar-size);

	background: rgba(0,0,0,0.1);
}
.gallery .loading>div:before,
.gallery .loading>div:after {
	content: "";
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: var(--bar-size);
	background: var(--gallery-text-color);
	opacity: 0.5;
}
.gallery .loading>div:after {
    animation: loadingBarAnimation ease infinite alternate 2s;
}
.gallery .loading>div:before {
	width: 50%;
    animation: loadingBarAnimation ease infinite alternate 1.5s;
}
@keyframes loadingBarAnimation {
	0% {
		translate: -100%;
	}
	100% {
		translate: 100%;
	}
}


/* loading images animation... */
.gallery:not(.ready) .images .mark {
	display: none;
}
.gallery:not(.ready) .images img {
	--duration: 3s;

	--delay: 0s;
	--extend: 1;

	box-shadow: none;

    animation: 
		loadingImagesAnimation 
			ease 
			infinite 
			alternate 
			calc(var(--duration) * var(--extend)) 
			var(--delay);
}
/* variations... */
.gallery .images img:nth-child(2n) {
	--delay: 0.2s;
	--extend: 0.9;
}
.gallery .images img:nth-child(3n) {
	--delay: 0.5s;
	--extend: 1.3;
}
.gallery .images img:nth-child(5n) {
	--delay: 0.4s;
	--extend: 1.6;
}
.gallery .images img:nth-child(7n) {
	--delay: 0.1s;
	--extend: 0.6;
}
@keyframes loadingImagesAnimation {
	0% {
		filter: contrast(0);
		opacity: 0.2;
	}
	50% {
		filter: contrast(0);
		opacity: 0.3;
	}
	100% {
		filter: contrast(0);
		opacity: 0.1;
	}
}



/********************************************************** Utils ****/

.gallery:not(.lightboxed):not(.detailed) .hide-in-gallery,
.gallery.lightboxed .hide-in-lightbox,
.gallery.detailed .hide-in-details {
	display: none;
}

	

/**********************************************************************
* vim:set ts=4 sw=4 :                                                */