/* ==========================================================================
   Paho SEO Responsive Gallery System — Front-end styles
   Premium, Elfsight-like card design. Mobile-first, RTL-aware.
   ========================================================================== */

.paho-gallery {
	--paho-columns: 4;
	--paho-gap: 18px;
	--paho-radius: 16px;
	--paho-bg-card: #ffffff;
	--paho-shadow: 0 6px 20px rgba(20, 20, 43, 0.08);
	--paho-shadow-hover: 0 16px 34px rgba(20, 20, 43, 0.16);
	--paho-accent: #6c5ce7;
	--paho-text: #1c1c28;
	--paho-text-muted: #6b7280;
	--paho-transition: 260ms cubic-bezier(.2, .8, .2, 1);

	box-sizing: border-box;
	margin: 32px 0;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	color: var(--paho-text);
	position: relative;
}

.paho-gallery *,
.paho-lightbox * {
	box-sizing: border-box;
}

.paho-gallery-heading {
	font-size: clamp(1.25rem, 2vw, 1.75rem);
	font-weight: 700;
	margin: 0 0 18px;
}

.paho-gallery-notice {
	padding: 16px;
	border-radius: 10px;
	background: #f3f4f6;
	color: #4b5563;
}

/* ---------------------------------------------------------------------- */
/* Shared card                                                            */
/* ---------------------------------------------------------------------- */

.gallery-item {
	background: var(--paho-bg-card);
	border-radius: var(--paho-radius);
	box-shadow: var(--paho-shadow);
	overflow: hidden;
	transition: transform var(--paho-transition), box-shadow var(--paho-transition);
	will-change: transform;
	display: flex;
	flex-direction: column;
}

.gallery-item:hover,
.gallery-item:focus-within {
	transform: translateY(-6px);
	box-shadow: var(--paho-shadow-hover);
}

.gallery-item-media {
	position: relative;
	aspect-ratio: 4 / 3;
	overflow: hidden;
	background: #eef0f3;
	cursor: pointer;
}

.paho-media {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
	transition: transform 420ms ease;
}

.gallery-item:hover .paho-media {
	transform: scale(1.06);
}

.gallery-item-overlay {
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,.45) 100%);
	opacity: 0;
	transition: opacity var(--paho-transition);
}

.gallery-item:hover .gallery-item-overlay,
.gallery-item:focus-within .gallery-item-overlay {
	opacity: 1;
}

.paho-zoom-icon {
	width: 34px;
	height: 34px;
	fill: #fff;
	filter: drop-shadow(0 2px 6px rgba(0,0,0,.35));
}

.gallery-item-title,
.gallery-item-description {
	/* Kept in the DOM (and in the accessibility tree) for SEO and
	   screen-reader users, but not shown on the card itself — the
	   title/description are shown inside the lightbox on click. */
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* ---------------------------------------------------------------------- */
/* Layout: Grid                                                           */
/* ---------------------------------------------------------------------- */

.paho-layout-grid .paho-gallery-track {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: var(--paho-gap);
}

@media (min-width: 640px) {
	.paho-layout-grid .paho-gallery-track {
		grid-template-columns: repeat(3, 1fr);
	}
}

@media (min-width: 1024px) {
	.paho-layout-grid .paho-gallery-track {
		grid-template-columns: repeat(var(--paho-columns), 1fr);
	}
}

/* ---------------------------------------------------------------------- */
/* Layout: Masonry (CSS multi-column — no JS required, SEO-safe)          */
/* ---------------------------------------------------------------------- */

.paho-layout-masonry .paho-gallery-track {
	column-count: 2;
	column-gap: var(--paho-gap);
}

@media (min-width: 640px) {
	.paho-layout-masonry .paho-gallery-track { column-count: 3; }
}

@media (min-width: 1024px) {
	.paho-layout-masonry .paho-gallery-track { column-count: var(--paho-columns); }
}

.paho-layout-masonry .gallery-item {
	margin-bottom: var(--paho-gap);
	break-inside: avoid;
	display: inline-block;
	width: 100%;
}

.paho-layout-masonry .gallery-item-media {
	aspect-ratio: auto;
}

/* ---------------------------------------------------------------------- */
/* Layout: Carousel / Slider                                              */
/* ---------------------------------------------------------------------- */

.paho-layout-carousel {
	padding: 0 44px;
}

.paho-layout-carousel .paho-gallery-track {
	display: flex;
	gap: var(--paho-gap);
	overflow-x: auto;
	scroll-snap-type: x mandatory;
	-webkit-overflow-scrolling: touch;
	scrollbar-width: none;
	padding-bottom: 4px;
}

.paho-layout-carousel .paho-gallery-track::-webkit-scrollbar {
	display: none;
}

.paho-layout-carousel .gallery-item {
	flex: 0 0 78%;
	scroll-snap-align: start;
}

@media (min-width: 640px) {
	.paho-layout-carousel .gallery-item { flex-basis: 45%; }
}

@media (min-width: 1024px) {
	.paho-layout-carousel .gallery-item { flex-basis: calc(100% / var(--paho-columns) - 14px); }
}

.paho-carousel-btn {
	position: absolute;
	top: 50%;
	transform: translateY(-50%);
	width: 40px;
	height: 40px;
	border-radius: 50%;
	border: none;
	background: #fff;
	box-shadow: var(--paho-shadow);
	font-size: 1.4rem;
	line-height: 1;
	cursor: pointer;
	z-index: 2;
	color: var(--paho-text);
	transition: transform 180ms ease, box-shadow 180ms ease;
}

.paho-carousel-btn:hover {
	box-shadow: var(--paho-shadow-hover);
	transform: translateY(-50%) scale(1.06);
}

.paho-carousel-prev { left: 0; }
.paho-carousel-next { right: 0; }

.paho-gallery.paho-rtl .paho-carousel-prev { left: auto; right: 0; transform: translateY(-50%) scaleX(-1); }
.paho-gallery.paho-rtl .paho-carousel-next { right: auto; left: 0; transform: translateY(-50%) scaleX(-1); }

/* ---------------------------------------------------------------------- */
/* Layout: Compact cards                                                  */
/* ---------------------------------------------------------------------- */

.paho-layout-compact .paho-gallery-track {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 10px;
}

@media (min-width: 640px) {
	.paho-layout-compact .paho-gallery-track {
		grid-template-columns: repeat(5, 1fr);
	}
}

@media (min-width: 1024px) {
	.paho-layout-compact .paho-gallery-track {
		grid-template-columns: repeat(calc(var(--paho-columns) + 2), 1fr);
	}
}

.paho-layout-compact .gallery-item-media { aspect-ratio: 1 / 1; }
.paho-layout-compact .gallery-item { border-radius: 10px; box-shadow: none; }
.paho-layout-compact .gallery-item:hover { transform: translateY(-3px); box-shadow: var(--paho-shadow); }

/* ---------------------------------------------------------------------- */
/* RTL fine-tuning                                                        */
/* ---------------------------------------------------------------------- */

.paho-gallery.paho-rtl,
[dir="rtl"] .paho-gallery {
	direction: rtl;
}

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

.paho-lightbox {
	position: fixed;
	inset: 0;
	z-index: 100000;
	display: none;
	align-items: center;
	justify-content: center;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.paho-lightbox.is-open {
	display: flex;
}

.paho-lightbox-backdrop {
	position: absolute;
	inset: 0;
	background: rgba(10, 10, 18, 0.86);
	backdrop-filter: blur(6px);
	opacity: 0;
	transition: opacity 260ms ease;
}

.paho-lightbox.is-open .paho-lightbox-backdrop {
	opacity: 1;
}

.paho-lightbox-inner {
	position: relative;
	width: min(92vw, 1100px);
	max-height: 90vh;
	display: flex;
	align-items: center;
	gap: 12px;
	z-index: 1;
	transform: scale(.92);
	opacity: 0;
	transition: transform 280ms cubic-bezier(.2,.8,.2,1), opacity 280ms ease;
}

.paho-lightbox.is-open .paho-lightbox-inner {
	transform: scale(1);
	opacity: 1;
}

.paho-lightbox-stage {
	flex: 1;
	min-width: 0;
	display: flex;
	flex-direction: column;
	align-items: center;
	max-height: 90vh;
}

.paho-lightbox-media {
	position: relative;
	max-width: 100%;
	max-height: 74vh;
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 120px;
}

.paho-lightbox-media img,
.paho-lightbox-media video {
	max-width: 100%;
	max-height: 74vh;
	border-radius: 14px;
	box-shadow: 0 20px 60px rgba(0,0,0,.5);
	opacity: 0;
	transform: scale(.98);
	animation: paho-media-in 320ms cubic-bezier(.2,.8,.2,1) forwards;
}

@keyframes paho-media-in {
	to { opacity: 1; transform: scale(1); }
}

/* Loading spinner while the media element fetches its source. */
.paho-lightbox-media.is-loading::after {
	content: "";
	position: absolute;
	width: 40px;
	height: 40px;
	border-radius: 50%;
	border: 3px solid rgba(255,255,255,.25);
	border-top-color: #fff;
	animation: paho-spin 800ms linear infinite;
}

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

.paho-lightbox-error {
	color: rgba(255,255,255,.85);
	background: rgba(255,255,255,.08);
	border: 1px solid rgba(255,255,255,.16);
	border-radius: 12px;
	padding: 28px 24px;
	text-align: center;
	max-width: 360px;
	font-size: .9rem;
}

/* Modern glassmorphism caption panel, Elfsight-style: a soft frosted
   card sitting just below the media, sliding/fading in per item. */
.paho-lightbox-caption {
	color: #fff;
	text-align: center;
	max-width: 640px;
	margin-top: 16px;
	padding: 14px 22px;
	border-radius: 14px;
	background: rgba(255, 255, 255, 0.08);
	border: 1px solid rgba(255, 255, 255, 0.12);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	opacity: 0;
	transform: translateY(8px);
	animation: paho-caption-in 360ms cubic-bezier(.2,.8,.2,1) forwards;
	animation-delay: 60ms;
}

@keyframes paho-caption-in {
	to { opacity: 1; transform: translateY(0); }
}

.paho-lightbox-title {
	font-size: 1.05rem;
	font-weight: 600;
	margin: 0 0 4px;
	letter-spacing: .01em;
}

.paho-lightbox-description {
	font-size: .88rem;
	color: rgba(255,255,255,.78);
	margin: 0;
	line-height: 1.55;
}

.paho-lightbox-counter {
	margin-top: 10px;
	font-size: .78rem;
	color: rgba(255,255,255,.55);
	letter-spacing: .04em;
}

.paho-lightbox-close {
	position: absolute;
	top: -6px;
	right: 0;
	transform: translateY(-100%);
	background: transparent;
	border: none;
	color: #fff;
	font-size: 2rem;
	line-height: 1;
	cursor: pointer;
	padding: 6px 10px;
}

.paho-lightbox-nav {
	flex: 0 0 auto;
	width: 48px;
	height: 48px;
	border-radius: 50%;
	border: none;
	background: rgba(255,255,255,.12);
	color: #fff;
	font-size: 1.8rem;
	line-height: 1;
	cursor: pointer;
	transition: background 180ms ease, transform 180ms ease;
}

.paho-lightbox-nav:hover {
	background: rgba(255,255,255,.25);
	transform: scale(1.06);
}

[dir="rtl"] .paho-lightbox-nav.paho-lightbox-prev,
.paho-lightbox.paho-rtl .paho-lightbox-prev { transform: scaleX(-1); }
[dir="rtl"] .paho-lightbox-nav.paho-lightbox-next,
.paho-lightbox.paho-rtl .paho-lightbox-next { transform: scaleX(-1); }

@media (max-width: 640px) {
	.paho-lightbox-nav { width: 38px; height: 38px; font-size: 1.4rem; }
	.paho-lightbox-inner { gap: 6px; }
	.paho-lightbox-close { top: -2px; }
}

/* Respect reduced-motion preferences */
@media (prefers-reduced-motion: reduce) {
	.gallery-item,
	.paho-media,
	.gallery-item-overlay,
	.paho-lightbox-backdrop,
	.paho-lightbox-inner,
	.paho-carousel-btn,
	.paho-lightbox-nav {
		transition: none !important;
	}
}

/* ---------------------------------------------------------------------- */
/* Portfolio trigger button (paho_gallery_portfolio_button() template tag) */
/* ---------------------------------------------------------------------- */

.paho-portfolio-btn {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 12px 26px;
	border-radius: 25px;
	background: linear-gradient(90deg, #6c5ce7, #5a4bd6);
	color: #fff;
	text-decoration: none;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	font-size: 15px;
	font-weight: 600;
	box-shadow: 0 4px 14px rgba(108, 92, 231, 0.35);
	transition: transform 220ms ease, box-shadow 220ms ease;
	cursor: pointer;
}

.paho-portfolio-btn:hover,
.paho-portfolio-btn:focus-visible {
	transform: translateY(-2px);
	box-shadow: 0 8px 20px rgba(108, 92, 231, 0.45);
	color: #fff;
}

.paho-portfolio-empty {
	display: inline-block;
	padding: 10px 18px;
	border-radius: 25px;
	background: #f3f4f6;
	color: #6b7280;
	font-size: 14px;
}