/* ====== Variables & base ====== */
.spg {
	display: flex;
	flex-direction: column;
	gap: 15px;
	--spg-radius: 16px;
	--spg-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
	--spg-border: 1px solid rgba(0, 0, 0, 0.08);
	--spg-gap: 10px;
	--spg-bg: #fff;
	--spg-ring: 0 0 0 3px rgba(59, 130, 246, 0.35);
	--spg-thumbs-per-view: 5; /* Desktop por defecto */
	background: transparent;
}

/* ====== Stage (imagen principal, sin flechas) ====== */
.spg__stage {
	position: relative;
	overflow: hidden;
	margin-bottom: var(--spg-gap);
}
.spg__stage-button {
	all: unset;
	display: block;
	cursor: zoom-in;
}
.spg__stage-img {
	width: 100%;
	height: auto;
	display: block;
	aspect-ratio: 4 / 3;
	object-fit: contain;
	transition: opacity 0.18s ease;
}

/* ====== Thumbs Carousel (una sola fila) ====== */
.spg__thumbs {
	position: relative;
	display: grid;
	grid-template-columns: auto 1fr auto;
	align-items: center;
	gap: var(--spg-gap);
}

.spg__thumbs-viewport {
	overflow-x: auto;
	overflow-y: hidden;
	-webkit-overflow-scrolling: touch;
	scroll-behavior: smooth;
	scroll-snap-type: x mandatory;
	border-radius: calc(var(--spg-radius) - 6px);
	scroll-padding-left: 10px; /* reforzado */
	scroll-padding-right: 10px; /* reforzado */
	border: var(--spg-border);
	padding: 10px;
	background: #fff;
	box-shadow: var(--spg-shadow);
	/* Ocultar scrollbar */
	scrollbar-width: none;
}
.spg__thumbs-viewport::-webkit-scrollbar {
	display: none;
}

.spg__thumbs-track {
	display: flex;
	gap: var(--spg-gap);
	align-items: stretch;
}

.spg__thumb {
	appearance: none;
	background: transparent;
	padding: 0;
	border: var(--spg-border);
	border-radius: calc(var(--spg-radius) - 8px);
	overflow: hidden;
	box-shadow: var(--spg-shadow);
	cursor: pointer;
	transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
	/* ancho por item visible (5/4/3) */
	flex: 0 0 calc((100% - var(--spg-gap) * (var(--spg-thumbs-per-view) - 1)) / var(--spg-thumbs-per-view));
	scroll-snap-align: start;
}
.spg__thumb:hover {
	transform: translateY(-2px);
}
.spg__thumb:focus-visible {
	outline: none;
	box-shadow: var(--spg-ring);
}
.spg__thumb.is-active {
	border-color: rgba(59, 130, 246, 0.55);
}

.spg__thumb img {
	display: block;
	width: 100%;
	aspect-ratio: 1 / 1;
	object-fit: cover;
}

/* Flechas del carrusel de thumbs */
.spg__thumbs-arrow {
	position: relative;
	background: var(--spg-bg);
	border: var(--spg-border);
	border-radius: 999px;
	padding: 10px;
	box-shadow: var(--spg-shadow);
	cursor: pointer;
	font-size: 16px;
	line-height: 1;
	transition: opacity 0.12s ease, transform 0.12s ease;
}
.spg__thumbs-next:hover {
	transform: translateX(3px);
}

.spg__thumbs-prev:hover {
	transform: translateX(-3px);
}
.spg__thumbs-arrow:focus-visible {
	outline: none;
	box-shadow: var(--spg-ring);
}
.spg__thumbs-arrow[disabled],
.spg__thumbs-arrow.is-disabled {
	opacity: 0.4;
	pointer-events: none;
}

/* ====== Lightbox ====== */
.spg__lightbox {
	position: fixed;
	inset: 0;
	display: none;
	align-items: center;
	justify-content: center;
	z-index: 9999;
}
.spg__lightbox.is-open {
	display: flex;
}
.spg__lightbox-backdrop {
	position: absolute;
	inset: 0;
	background: rgba(0, 0, 0, 0.7);
	backdrop-filter: blur(2px);
}
.spg__lightbox-content {
	position: relative;
	max-width: 92vw;
	max-height: 92vh;
	border-radius: 16px;
	overflow: hidden;
	box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
	outline: none;
	background: #111;
}
.spg__lightbox-img {
	display: block;
	max-width: 92vw;
	max-height: 92vh;
	width: auto;
	height: auto;
	object-fit: contain;
	cursor: zoom-out;
	background: #111;
}
.spg__lightbox-close,
.spg__lightbox-nav {
	position: absolute;
	background: rgba(255, 255, 255, 0.96);
	border: 1px solid rgba(0, 0, 0, 0.12);
	border-radius: 999px;
	padding: 10px 14px;
	box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
	cursor: pointer;
	font-size: 18px;
	line-height: 1;
}
.spg__lightbox-close {
	top: 10px;
	right: 10px;
}
.spg__lightbox-prev {
	left: 10px;
	top: 50%;
	transform: translateY(-50%);
}
.spg__lightbox-next {
	right: 10px;
	top: 50%;
	transform: translateY(-50%);
}
.spg__lightbox-close:focus-visible,
.spg__lightbox-nav:focus-visible {
	outline: none;
	box-shadow: var(--spg-ring);
}
html.spg-no-scroll,
body.spg-no-scroll {
	overflow: hidden !important;
}

/* ====== Breakpoints para # visibles ====== */
@media (max-width: 1024px) {
	.spg {
		--spg-thumbs-per-view: 4;
	} /* Tablet */
}
@media (max-width: 767px) {
	.spg {
		--spg-thumbs-per-view: 3;
	} /* Mobile */
}