/**
 * com_photoportal - frontend.
 *
 * Deliberately unopinionated about typography and colour: the gallery inherits
 * the template's, and only the pieces the template cannot know about (tile
 * framing, masonry flow, the lightbox) are styled here.
 *
 * @copyright  Copyright (C) 2026. All rights reserved.
 * @license    GNU General Public License version 2 or later
 */

.pp-gallery {
	--pp-lb-backdrop: rgba(16, 16, 18, .94);
	--pp-lb-fg: #f5f5f5;
	--pp-tile-radius: 2px;
	--pp-transition: 260ms cubic-bezier(.2, .7, .3, 1);
}

.pp-intro,
.pp-outro {
	margin-block: 0 1.75rem;
}

.pp-outro {
	margin-block: 2rem 0;
}

.pp-empty {
	padding: 2rem 0;
	opacity: .7;
}

/* ------------------------------------------------------------------ */
/* Tiles                                                               */
/* ------------------------------------------------------------------ */

.pp-tile {
	margin: 0;
	position: relative;
}

.pp-tile-link {
	display: block;
	text-decoration: none;
	outline-offset: 3px;
}

.pp-tile-frame {
	overflow: hidden;
	border-radius: var(--pp-tile-radius);
	background: rgba(127, 127, 127, .08);
	position: relative;
}

.pp-tile-frame img {
	display: block;
	width: 100%;
	height: auto;
	transition: transform var(--pp-transition), opacity var(--pp-transition);
}

/* Fixed-ratio tiles: the frame owns the shape, the image covers it. */
.pp-ratio {
	position: relative;
	width: 100%;
}

.pp-ratio::before {
	content: "";
	display: block;
}

.pp-ratio img {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.pp-ratio-1x1::before  { padding-top: 100%; }
.pp-ratio-4x3::before  { padding-top: 75%; }
.pp-ratio-3x2::before  { padding-top: 66.6667%; }
.pp-ratio-16x9::before { padding-top: 56.25%; }
.pp-ratio-3x4::before  { padding-top: 133.3333%; }
.pp-ratio-2x3::before  { padding-top: 150%; }

/* Hover treatments */
.pp-hover-zoom .pp-tile-link:hover img,
.pp-hover-zoom .pp-tile-link:focus-visible img {
	transform: scale(1.045);
}

.pp-hover-fade .pp-tile-link:hover img,
.pp-hover-fade .pp-tile-link:focus-visible img {
	opacity: .78;
}

.pp-hover-lift {
	transition: transform var(--pp-transition), box-shadow var(--pp-transition);
}

.pp-hover-lift:hover,
.pp-hover-lift:focus-within {
	transform: translateY(-4px);
	box-shadow: 0 12px 28px rgba(0, 0, 0, .18);
}

.pp-tile-caption {
	display: flex;
	gap: .5rem;
	align-items: baseline;
	justify-content: space-between;
	padding: .4rem .1rem 0;
	font-size: .85rem;
	line-height: 1.3;
}

.pp-tile-title {
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.pp-number {
	font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
	font-variant-numeric: tabular-nums;
	letter-spacing: .04em;
	opacity: .72;
	white-space: nowrap;
}

/* Discourage casual saving. Not a security control - the delivered JPEG is
   public by definition; the master file is what is actually protected. */
.pp-protected img {
	-webkit-user-select: none;
	user-select: none;
	-webkit-touch-callout: none;
	pointer-events: auto;
}

/* ------------------------------------------------------------------ */
/* Masonry                                                             */
/* ------------------------------------------------------------------ */

/*
 * CSS multi-column rather than a JS packing library: no dependency, no layout
 * shift on load, and it reflows for free. Order runs down each column rather
 * than across, which suits a gallery.
 */
.pp-masonry {
	column-count: var(--pp-cols-xs, 2);
	column-gap: var(--pp-gap, 1rem);
}

.pp-masonry .pp-tile {
	break-inside: avoid;
	page-break-inside: avoid;
	margin-bottom: var(--pp-gap, 1rem);
	display: inline-block;
	width: 100%;
}

.pp-gap-0 { --pp-gap: 0; }
.pp-gap-1 { --pp-gap: .25rem; }
.pp-gap-2 { --pp-gap: .5rem; }
.pp-gap-3 { --pp-gap: 1rem; }
.pp-gap-4 { --pp-gap: 1.5rem; }
.pp-gap-5 { --pp-gap: 3rem; }

@media (min-width: 576px)  { .pp-masonry { column-count: var(--pp-cols-sm, 2); } }
@media (min-width: 768px)  { .pp-masonry { column-count: var(--pp-cols-md, 3); } }
@media (min-width: 992px)  { .pp-masonry { column-count: var(--pp-cols-lg, 4); } }
@media (min-width: 1200px) { .pp-masonry { column-count: var(--pp-cols-xl, 4); } }
@media (min-width: 1400px) { .pp-masonry { column-count: var(--pp-cols-xxl, 5); } }

.pp-pagination {
	margin-top: 2rem;
}

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

body.pp-lightbox-open {
	overflow: hidden;
}

.pp-lightbox {
	position: fixed;
	inset: 0;
	z-index: 10500;
	display: flex;
	opacity: 0;
	transition: opacity 220ms ease;
}

.pp-lightbox.is-open {
	opacity: 1;
}

.pp-lightbox[hidden] {
	display: none;
}

.pp-lb-backdrop {
	position: absolute;
	inset: 0;
	background: var(--pp-lb-backdrop, rgba(16, 16, 18, .94));
	cursor: zoom-out;
}

.pp-lb-shell {
	position: relative;
	display: flex;
	flex-direction: column;
	width: 100%;
	height: 100%;
	padding: clamp(.75rem, 3vw, 2.5rem);
}

.pp-lb-figure {
	position: relative;
	display: flex;
	flex-direction: column;
	flex: 1 1 auto;
	min-height: 0;
	margin: 0;
	gap: .75rem;
}

.pp-lb-stage {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: center;
	flex: 1 1 auto;
	min-height: 0;
}

.pp-lb-image {
	max-width: 100%;
	max-height: 100%;
	width: auto;
	height: auto;
	object-fit: contain;
	opacity: 0;
	transition: opacity 200ms ease;
	box-shadow: 0 24px 60px rgba(0, 0, 0, .5);
}

.pp-lb-image.is-ready {
	opacity: 1;
}

.pp-lb-spinner {
	position: absolute;
	width: 34px;
	height: 34px;
	border: 2px solid rgba(255, 255, 255, .25);
	border-top-color: rgba(255, 255, 255, .9);
	border-radius: 50%;
	opacity: 0;
	animation: pp-spin 700ms linear infinite;
}

.pp-lightbox.is-loading .pp-lb-spinner {
	opacity: 1;
}

@keyframes pp-spin {
	to { transform: rotate(360deg); }
}

.pp-lb-caption {
	display: flex;
	gap: 1rem;
	align-items: baseline;
	justify-content: center;
	flex: 0 0 auto;
	color: var(--pp-lb-fg, #f5f5f5);
	font-size: .9rem;
	text-align: center;
	min-height: 1.4em;
}

.pp-lb-counter {
	font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
	font-variant-numeric: tabular-nums;
	opacity: .6;
}

/* Controls */
.pp-lb-btn {
	position: absolute;
	z-index: 2;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 48px;
	height: 48px;
	padding: 0;
	border: 0;
	border-radius: 50%;
	background: rgba(255, 255, 255, .1);
	color: var(--pp-lb-fg, #f5f5f5);
	cursor: pointer;
	transition: background 160ms ease, opacity 160ms ease, transform 160ms ease;
}

.pp-lb-btn:hover:not(:disabled) {
	background: rgba(255, 255, 255, .22);
}

.pp-lb-btn:focus-visible {
	outline: 2px solid #fff;
	outline-offset: 3px;
}

.pp-lb-btn:disabled {
	opacity: .25;
	cursor: default;
}

.pp-lb-btn[hidden] {
	display: none;
}

.pp-lb-btn svg {
	width: 24px;
	height: 24px;
}

.pp-lb-prev { left: clamp(.5rem, 2vw, 1.5rem); top: 50%; transform: translateY(-50%); }
.pp-lb-next { right: clamp(.5rem, 2vw, 1.5rem); top: 50%; transform: translateY(-50%); }
.pp-lb-close { right: clamp(.5rem, 2vw, 1.5rem); top: clamp(.5rem, 2vw, 1.5rem); }

.pp-lb-close::before,
.pp-lb-close::after {
	content: "";
	position: absolute;
	width: 20px;
	height: 2px;
	background: currentColor;
	border-radius: 1px;
}

.pp-lb-close::before { transform: rotate(45deg); }
.pp-lb-close::after  { transform: rotate(-45deg); }

@media (max-width: 575.98px) {
	.pp-lb-prev,
	.pp-lb-next {
		top: auto;
		bottom: .5rem;
		transform: none;
	}

	.pp-lb-caption {
		padding-bottom: 3.5rem;
	}
}

@media (prefers-reduced-motion: reduce) {
	.pp-lightbox,
	.pp-lb-image,
	.pp-tile-frame img,
	.pp-hover-lift {
		transition: none;
	}

	.pp-lb-spinner {
		animation: none;
	}
}