.mosaic-ih {
	--mosaic-ih-cover: rgba(20, 28, 60, 0.78);
}

.mosaic-ih__frame {
	position: relative;
	display: block;
	overflow: hidden;
	color: inherit;
	text-decoration: none;
}

.mosaic-ih__frame img {
	display: block;
	inline-size: 100%;
	block-size: 100%;
	object-fit: cover;
	transition: transform 0.5s ease, filter 0.5s ease;
}

.mosaic-ih__cap {
	position: absolute;
	inset: 0;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 0.35rem;
	padding: 1rem;
	color: #fff;
	text-align: center;
	transition: opacity 0.35s ease, transform 0.35s ease;
}

.mosaic-ih__icon {
	display: inline-flex;
	font-size: 2rem;
}

.mosaic-ih__title {
	font-size: 1.2rem;
	font-weight: 700;
}

.mosaic-ih__text {
	font-size: 0.95rem;
}

/* A colour covers the picture. */
.mosaic-ih--overlay .mosaic-ih__cap {
	background: var(--mosaic-ih-cover);
	opacity: 0;
}

.mosaic-ih--overlay .mosaic-ih__frame:hover .mosaic-ih__cap,
.mosaic-ih--overlay .mosaic-ih__frame:focus-visible .mosaic-ih__cap,
.mosaic-ih--overlay .mosaic-ih__frame:focus-within .mosaic-ih__cap {
	opacity: 1;
}

/* A caption slides up from the bottom edge. */
.mosaic-ih--slide .mosaic-ih__cap {
	inset-block: auto 0;
	align-items: flex-start;
	justify-content: flex-end;
	background: linear-gradient(to top, var(--mosaic-ih-cover), transparent);
	padding-block-start: 3rem;
	text-align: start;
	opacity: 0;
	transform: translateY(1rem);
}

.mosaic-ih--slide .mosaic-ih__frame:hover .mosaic-ih__cap,
.mosaic-ih--slide .mosaic-ih__frame:focus-visible .mosaic-ih__cap,
.mosaic-ih--slide .mosaic-ih__frame:focus-within .mosaic-ih__cap {
	opacity: 1;
	transform: none;
}

.mosaic-ih--zoom .mosaic-ih__frame:hover img,
.mosaic-ih--zoom .mosaic-ih__frame:focus-visible img {
	transform: scale(1.1);
}

.mosaic-ih--colour .mosaic-ih__frame img {
	filter: grayscale(1);
}

.mosaic-ih--colour .mosaic-ih__frame:hover img,
.mosaic-ih--colour .mosaic-ih__frame:focus-visible img {
	filter: none;
}

.mosaic-ih__frame:focus-visible {
	outline: 3px solid var(--mosaic-color-primary, #2b4acb);
	outline-offset: 2px;
}

/* Touch screens have no hover: show the caption so it is never hidden. */
@media (hover: none) {
	.mosaic-ih--overlay .mosaic-ih__cap {
		opacity: 1;
		background: linear-gradient(to top, var(--mosaic-ih-cover), transparent 70%);
		justify-content: flex-end;
	}

	.mosaic-ih--overlay .mosaic-ih__icon {
		display: none;
	}

	.mosaic-ih--slide .mosaic-ih__cap {
		opacity: 1;
		transform: none;
	}

	.mosaic-ih--colour .mosaic-ih__frame img {
		filter: none;
	}
}

@media (prefers-reduced-motion: reduce) {
	.mosaic-ih__frame img,
	.mosaic-ih__cap {
		transition: none;
	}

	.mosaic-ih--zoom .mosaic-ih__frame:hover img {
		transform: none;
	}
}