/**
 * Timeline — ledger layout: numbered markers, framed images, active cards
 */

.tl-section {
	--tl-text: color-mix(in srgb, currentColor 62%, transparent);
	--tl-heading: currentColor;
	--tl-date: var(--tl-accent);
	--tl-accent: currentColor;
	--tl-accent-end: var(--tl-accent);
	--tl-accent-soft: color-mix(in srgb, var(--tl-accent) 14%, transparent);
	--tl-line-idle: color-mix(in srgb, currentColor 14%, transparent);
	--tl-panel-border: color-mix(in srgb, currentColor 16%, transparent);
	--tl-card-bg: transparent;
	--tl-card-active-bg: color-mix(in srgb, var(--tl-accent) 6%, transparent);
	--tl-card-active-border: color-mix(in srgb, var(--tl-accent) 28%, transparent);
	--tl-card-radius: 4px;
	--tl-index-size: 34px;
	--tl-index-idle-bg: Canvas;
	--tl-index-idle-border: color-mix(in srgb, currentColor 18%, transparent);
	--tl-index-idle: color-mix(in srgb, currentColor 42%, transparent);
	--tl-index-active-bg: var(--tl-accent);
	--tl-index-active-text: Canvas;
	--tl-index-glow-size: 6px;
	--tl-number-gap: 24px;
	--tl-fill-glow: color-mix(in srgb, var(--tl-accent) 35%, transparent);
	--tl-fill-glow-size: 16px;
	--tl-entry-gap: 11vh;
	--tl-card-max: 400px;
	--tl-media-radius: 3px;
	--tl-media-ratio: 4 / 3;
	--tl-grayscale: 0;
	--tl-track-inset: 0px;
	--tl-line-width: 1px;
	--tl-ease: cubic-bezier(0.22, 0.61, 0.36, 1);

	position: relative;
	display: block;
	width: 100%;
	max-width: none;
	box-sizing: border-box;
	overflow: visible !important;
	background: transparent;
	color: inherit;
	font-family: inherit;
	isolation: isolate;
}

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

.tl-track {
	position: absolute;
	top: var(--tl-track-inset, 0px);
	bottom: var(--tl-track-inset, 0px);
	left: 50%;
	width: var(--tl-line-width);
	transform: translateX(-50%);
	z-index: 0;
	pointer-events: none;
}

.tl-line {
	position: absolute;
	inset: 0;
	background: var(--tl-line-idle);
}

.tl-fill {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 0%;
	background: linear-gradient(180deg, var(--tl-accent), var(--tl-accent-end));
	box-shadow: 0 0 var(--tl-fill-glow-size) var(--tl-fill-glow);
	transition: height 0.12s linear;
	z-index: 1;
}

.tl-entry {
	position: relative;
	display: grid;
	grid-template-columns: minmax(0, 1fr) calc(var(--tl-index-size) + var(--tl-index-glow-size) * 2) minmax(0, 1fr);
	column-gap: var(--tl-number-gap);
	align-items: start;
	margin-bottom: var(--tl-entry-gap);
	z-index: 1;
}

.tl-entry:last-child {
	margin-bottom: 0;
}

.tl-connector {
	display: none;
}

.tl-index {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	width: var(--tl-index-size);
	height: var(--tl-index-size);
	border-radius: 50%;
	background: var(--tl-index-idle-bg);
	border: 1px solid var(--tl-index-idle-border);
	display: flex;
	align-items: center;
	justify-content: center;
	font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
	font-size: 11px;
	letter-spacing: 0.04em;
	color: var(--tl-index-idle);
	z-index: 2;
	transition: border-color 0.4s var(--tl-ease), color 0.4s var(--tl-ease),
		box-shadow 0.4s var(--tl-ease), background 0.4s var(--tl-ease);
}

.tl-entry.is-active .tl-index {
	border-color: var(--tl-index-active-bg);
	color: var(--tl-index-active-text);
	background: var(--tl-index-active-bg);
	box-shadow: 0 0 0 var(--tl-index-glow-size) var(--tl-accent-soft);
}

.tl-section.tl-hide-numbers .tl-index {
	display: none;
}

.tl-card {
	max-width: var(--tl-card-max);
	min-width: 0;
	padding: 18px 22px;
	border-radius: var(--tl-card-radius);
	border: 1px solid transparent;
	background: var(--tl-card-bg);
	position: relative;
	opacity: 0;
	pointer-events: none;
	transform: translateY(16px);
	transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
		transform 0.8s cubic-bezier(0.4, 0, 0.2, 1),
		background 0.5s var(--tl-ease),
		border-color 0.5s var(--tl-ease),
		box-shadow 0.5s var(--tl-ease);
}

.tl-entry.is-active .tl-card {
	opacity: 1;
	pointer-events: auto;
	transform: none;
	background: var(--tl-card-active-bg);
	border-color: var(--tl-card-active-border);
	box-shadow: 0 0 0 1px color-mix(in srgb, var(--tl-accent) 8%, transparent);
}

.tl-entry.side-left .tl-card {
	grid-column: 1;
	justify-self: end;
	text-align: right;
}

.tl-entry.side-right .tl-card {
	grid-column: 3;
	justify-self: start;
	text-align: left;
}

.tl-date {
	font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
	font-size: 12px;
	font-weight: 500;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--tl-date, var(--tl-accent));
	margin: 0 0 10px;
}

.tl-media-wrap {
	width: 100%;
	aspect-ratio: var(--tl-media-ratio);
	border-radius: var(--tl-media-radius);
	overflow: hidden;
	border: 1px solid var(--tl-panel-border);
	margin-bottom: 18px;
	background: color-mix(in srgb, currentColor 6%, transparent);
}

.tl-entry.side-left .tl-media-wrap {
	margin-left: auto;
}

.tl-entry.side-right .tl-media-wrap {
	margin-right: auto;
}

.tl-media-wrap img,
.tl-media {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
	filter: grayscale(var(--tl-grayscale));
}

.tl-heading {
	font-family: inherit;
	font-size: 1.5rem;
	font-weight: 600;
	line-height: 1.25;
	letter-spacing: -0.01em;
	margin: 0 0 10px;
	padding: 0;
	color: var(--tl-heading);
}

.tl-text {
	font-family: inherit;
	font-size: 0.98rem;
	line-height: 1.6;
	color: var(--tl-text);
	margin: 0;
}

.tl-section.tl-hide-images .tl-media-wrap {
	display: none;
}

.tl-close {
	display: flex;
	align-items: center;
	gap: 16px;
	margin-top: 8vh;
	font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
	font-size: 12px;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: color-mix(in srgb, currentColor 40%, transparent);
}

.tl-close::before {
	content: '';
	width: 10px;
	height: 10px;
	border-radius: 50%;
	background: var(--tl-accent);
	box-shadow: 0 0 10px var(--tl-fill-glow);
	flex-shrink: 0;
}

.tl-section[data-tl-builder="true"] .tl-entry .tl-index {
	border-color: var(--tl-index-active-bg);
	color: var(--tl-index-active-text);
	background: var(--tl-index-active-bg);
	box-shadow: 0 0 0 var(--tl-index-glow-size) var(--tl-accent-soft);
}

.tl-section[data-tl-builder="true"] .tl-entry .tl-card {
	opacity: 1;
	pointer-events: auto;
	transform: none;
	background: var(--tl-card-active-bg);
	border-color: var(--tl-card-active-border);
}

.tl-section[data-tl-builder="true"] .tl-fill {
	height: 70%;
	transition: none;
}

@media (max-width: 991px) {
	.tl-index {
		display: none;
	}

	.tl-track {
		display: none;
	}

	.tl-section {
		--tl-line-card-gap: 8px;
		display: flex;
		flex-direction: column;
		gap: 0;
		row-gap: 0;
	}

	.tl-entry {
		display: flex;
		flex-direction: column;
		align-items: center;
		grid-template-columns: none;
		column-gap: 0;
		margin: 0;
		margin-bottom: 0;
		overflow: visible;
	}

	.tl-connector {
		display: block;
		position: relative;
		height: var(--tl-entry-gap);
		margin: 0;
		padding: 0;
		pointer-events: none;
		z-index: 0;
		flex-shrink: 0;
	}

	.tl-connector-rail,
	.tl-connector-fill {
		position: absolute;
		left: 50%;
		width: var(--tl-line-width);
		transform: translateX(-50%);
		top: var(--tl-line-card-gap);
		bottom: var(--tl-line-card-gap);
		height: auto;
	}

	.tl-connector-rail {
		background: color-mix(in srgb, currentColor 40%, transparent);
	}

	.tl-connector-fill {
		bottom: auto;
		height: 0;
		background: linear-gradient(180deg, var(--tl-accent), var(--tl-accent-end));
		box-shadow: 0 0 var(--tl-fill-glow-size) var(--tl-fill-glow);
		transition: height 0.12s linear;
	}

	.tl-section[data-tl-builder="true"] .tl-connector-fill {
		height: calc(100% - var(--tl-line-card-gap) * 2);
		transition: none;
	}

	.tl-entry.side-left .tl-card,
	.tl-entry.side-right .tl-card {
		grid-column: auto;
		justify-self: center;
		align-self: stretch;
		text-align: center;
		max-width: none;
		width: 100%;
		margin: 0 auto;
		z-index: 2;
	}

	.tl-date,
	.tl-heading,
	.tl-text {
		text-align: center;
	}

	.tl-entry.side-left .tl-media-wrap,
	.tl-entry.side-right .tl-media-wrap,
	.tl-section .tl-media-wrap {
		margin-left: auto;
		margin-right: auto;
		width: 100%;
		max-width: 100%;
	}

	.tl-close {
		justify-content: center;
		margin-top: 0;
	}
}

@media (prefers-reduced-motion: reduce) {
	.tl-card,
	.tl-index,
	.tl-fill,
	.tl-connector-fill {
		transition: none !important;
	}
}