*,
*::before,
*::after {
	box-sizing: border-box;
}

.gallery {
	display: block;
}

.gallery__slot {
	display: grid;
	grid-template-columns: repeat(var(--gallery-columns, 3), 1fr);
	width: 100%;
	flex-direction: row;
	flex-wrap: wrap;
	gap: var(--gallery-gap, 0);
}

.gallery__slot > * {
	display: block;
	width: 100%;
}

.gallery--has-lightbox > * {
	cursor: pointer;
}

.gallery__image {
	position: relative;
	width: 100%;
	display: block;
	flex-direction: column;
	margin: 0;
}

.gallery__image img {
	display: block;
	width: 100%;
	height: auto;
	object-fit: cover;
	object-position: center;
}

.gallery__image__caption {
	position: absolute;
	inset: 0;
	inset-block-start: auto;
	background-color: rgba(0, 0, 0, 0.4);
	padding-inline: 0.5em;
	padding-block: 0.3em;
	line-height: 1.2;
	color: white;
}

/* =============================================
   GALLERY-IMAGE DEFAULT STYLES
   (applied inside grantcodes-gallery-image shadow DOM via :host)
   ============================================= */

/* Default square crop. :host selector comes after .gallery__image img so
   wins on equal specificity. Uses custom properties so filmstrip mode can
   override them via inheritance from the parent gallery element. */
:host .gallery__image img {
	aspect-ratio: var(--_gallery-img-aspect-ratio, 1);
	block-size: var(--_gallery-img-block-size, auto);
	width: var(--_gallery-img-width, 100%);
	height: var(--_gallery-img-height, auto);
	max-inline-size: var(--_gallery-img-max-inline-size, unset);
}

:host .gallery__image {
	block-size: var(--_gallery-image-block-size, auto);
	width: var(--_gallery-image-width, 100%);
}

/* =============================================
   FILMSTRIP VARIANT
   ============================================= */

/* Set inherited CSS custom properties on the gallery host when in filmstrip
   mode. These cascade down to slotted grantcodes-gallery-image children
   without requiring JS attribute propagation, making the filmstrip work
   correctly with SSR-rendered content. */
:host([variant="filmstrip"]) {
	--_gallery-image-block-size: 100%;
	--_gallery-image-width: fit-content;
	--_gallery-img-aspect-ratio: auto;
	--_gallery-img-block-size: 100%;
	--_gallery-img-width: auto;
	--_gallery-img-height: 100%;
	--_gallery-img-max-inline-size: none;
}

:host([variant="filmstrip"]) .gallery {
	overflow: hidden;
}

:host([variant="filmstrip"]) .gallery__slot {
	display: flex;
	flex-wrap: nowrap;
	overflow-x: auto;
	overflow-y: hidden;
	block-size: var(--filmstrip-height, 240px);
	gap: var(--gallery-gap, 4px);
	scroll-snap-type: x mandatory;
	overscroll-behavior-x: contain;
	scrollbar-width: none;
}

:host([variant="filmstrip"]) .gallery__slot::-webkit-scrollbar {
	display: none;
}

:host([variant="filmstrip"]) .gallery__slot::slotted(*) {
	flex: 0 0 auto;
	block-size: 100%;
	scroll-snap-align: start;
}

/* Scroll-driven reveal animation */
@supports (animation-timeline: view()) {
	@media (prefers-reduced-motion: no-preference) {
		:host([variant="filmstrip"]) .gallery__slot::slotted(*) {
			animation: filmstrip-reveal linear both;
			animation-timeline: view(inline);
			animation-range: entry 0% entry 60%;
		}
	}
}

@keyframes filmstrip-reveal {
	from {
		opacity: 0.3;
		scale: 0.92;
	}
	to {
		opacity: 1;
		scale: 1;
	}
}