.mosaic-timeline {
	--mosaic-tl-line: var(--mosaic-color-border, #cfd4e0);
	--mosaic-tl-marker: var(--mosaic-color-primary, #2b4acb);
	--mosaic-tl-size: 2.5rem;
}

.mosaic-tl__list {
	position: relative;
	display: grid;
	gap: 1.75rem;
	margin: 0;
	padding: 0;
	list-style: none;
}

/* The line runs through the middle of the markers. */
.mosaic-tl__list::before {
	content: "";
	position: absolute;
	inset-block: 0;
	inset-inline-start: calc(var(--mosaic-tl-size) / 2 - 1px);
	inline-size: 2px;
	background: var(--mosaic-tl-line);
}

/* Small screens, and the "side" layout: marker first, then the card, line at the start. */
.mosaic-tl__item {
	position: relative;
	display: grid;
	grid-template-columns: var(--mosaic-tl-size) 1fr;
	align-items: start;
	gap: 1rem;
}

.mosaic-tl__marker {
	position: relative;
	z-index: 1;
	display: inline-grid;
	place-items: center;
	inline-size: var(--mosaic-tl-size);
	block-size: var(--mosaic-tl-size);
	color: #fff;
	font-weight: 700;
	background: var(--mosaic-tl-marker);
	border: 4px solid var(--mosaic-color-bg, #fff);
	border-radius: 50%;
	box-shadow: 0 0 0 2px var(--mosaic-tl-marker);
}

.mosaic-tl__marker .mosaic-svg {
	font-size: 1.1rem;
}

.mosaic-tl--marker-dot .mosaic-tl__marker {
	inline-size: 1rem;
	block-size: 1rem;
	margin: calc((var(--mosaic-tl-size) - 1rem) / 2);
	border-width: 3px;
}

.mosaic-tl__card {
	padding: 1rem 1.25rem;
	background: var(--mosaic-color-surface, #f5f6fa);
	border-radius: 0.75rem;
}

.mosaic-tl__date {
	display: block;
	margin-block-end: 0.25rem;
	color: var(--mosaic-tl-marker);
	font-size: 0.875rem;
	font-weight: 600;
}

.mosaic-tl__title {
	margin: 0 0 0.35rem;
	font-size: 1.125rem;
	line-height: 1.3;
}

.mosaic-tl__text {
	margin: 0;
}

/* Wide screens: with the line in the middle, steps take turns on each side. */
@media (min-width: 768px) {
	.mosaic-tl--alternate .mosaic-tl__list::before {
		inset-inline-start: calc(50% - 1px);
	}

	.mosaic-tl--alternate .mosaic-tl__item {
		grid-template-columns: 1fr var(--mosaic-tl-size) 1fr;
		gap: 1.5rem;
	}

	.mosaic-tl--alternate .mosaic-tl__item .mosaic-tl__marker {
		grid-column: 2;
		grid-row: 1;
	}

	.mosaic-tl--alternate .mosaic-tl__item .mosaic-tl__card {
		grid-column: 1;
		grid-row: 1;
		text-align: end;
	}

	.mosaic-tl--alternate .mosaic-tl__item:nth-child(even) .mosaic-tl__card {
		grid-column: 3;
		text-align: start;
	}
}