/**
 * Variant CSS: history--decade-bands
 *
 * History grouped into horizontal decade bands. Each band has an era column (a large
 * accent year label + an era title) on the left and a highlights column (one intro
 * line + a bulleted list of that decade's wins) on the right, separated from the next
 * band by a hairline. Text stays --ink (polarity-aware); era year, em and the custom
 * list markers take --accent. Bands stack the two columns on mobile, no horizontal
 * overflow. Third variant of the new `history` role.
 */

body.aibt-universal .universal-history--decade-bands {
	padding-block: calc(clamp(3rem, 7vw, 5rem) * var(--density, 1));
}

/* Intro. */
body.aibt-universal .universal-history--decade-bands .universal-history__intro {
	margin-bottom: clamp(2rem, 4.5vw, 3rem);
}

body.aibt-universal .universal-history--decade-bands .universal-history__kicker {
	font-family: var(--font-body) !important;
	font-size: var(--text-xs) !important;
	font-weight: 600 !important;
	letter-spacing: var(--tracking-widest) !important;
	text-transform: uppercase !important;
	color: var(--accent) !important;
	margin: 0 0 var(--space-sm) 0 !important;
}

body.aibt-universal .universal-history--decade-bands .universal-history__headline {
	font-family: var(--font-display) !important;
	color: var(--ink) !important;
	margin: 0 0 var(--space-sm) 0 !important;
}

body.aibt-universal .universal-history--decade-bands .universal-history__headline em {
	color: var(--accent) !important;
	font-style: italic;
}

body.aibt-universal .universal-history--decade-bands .universal-history__deck {
	font-family: var(--font-body) !important;
	font-size: var(--text-base) !important;
	color: var(--ink) !important;
	opacity: 0.74;
	margin: 0 !important;
}

/* Bands stack: top hairline on the first band. */
body.aibt-universal .universal-history--decade-bands .universal-history__bands {
	border-top: 1px solid color-mix(in srgb, var(--ink) 13%, transparent);
}

body.aibt-universal .universal-history--decade-bands .universal-history__band {
	gap: clamp(1.4rem, 4vw, 3rem) !important;
	align-items: flex-start !important;
	padding-block: calc(clamp(1.6rem, 3.6vw, 2.4rem) * var(--density, 1));
	border-bottom: 1px solid color-mix(in srgb, var(--ink) 13%, transparent);
}

/* Era column. */
body.aibt-universal .universal-history--decade-bands .universal-history__era {
	flex: 0 0 auto !important;
	width: 220px;
	max-width: 100%;
}

body.aibt-universal .universal-history--decade-bands .universal-history__era-year {
	font-family: var(--font-display) !important;
	font-size: clamp(1.8rem, 4vw, 2.6rem) !important;
	font-weight: 700 !important;
	line-height: 1 !important;
	letter-spacing: -0.01em;
	color: var(--accent) !important;
	margin: 0 0 0.3rem 0 !important;
}

body.aibt-universal .universal-history--decade-bands .universal-history__era-title {
	font-family: var(--font-display) !important;
	font-size: var(--text-lg) !important;
	font-weight: 600 !important;
	line-height: 1.2 !important;
	color: var(--ink) !important;
	margin: 0 !important;
}

/* Highlights column. */
body.aibt-universal .universal-history--decade-bands .universal-history__highlights {
	flex: 1 1 320px;
	min-width: 0;
}

body.aibt-universal .universal-history--decade-bands .universal-history__band-desc {
	font-family: var(--font-body) !important;
	font-size: var(--text-base) !important;
	line-height: var(--leading-relaxed) !important;
	color: var(--ink) !important;
	opacity: 0.82;
	margin: 0 0 var(--space-sm) 0 !important;
	max-width: 60ch;
}

body.aibt-universal .universal-history--decade-bands .universal-history__list {
	list-style: none !important;
	margin: 0 !important;
	padding: 0 !important;
	display: grid;
	gap: 0.5rem;
}

body.aibt-universal .universal-history--decade-bands .universal-history__list li {
	position: relative;
	padding-left: 1.4rem;
	font-family: var(--font-body) !important;
	font-size: var(--text-sm) !important;
	line-height: var(--leading-relaxed) !important;
	color: var(--ink) !important;
	opacity: 0.86;
}

/* Accent tick marker. */
body.aibt-universal .universal-history--decade-bands .universal-history__list li::before {
	content: "";
	position: absolute;
	left: 0;
	top: 0.62em;
	width: 8px;
	height: 8px;
	border-radius: var(--decor-radius-pill, 999px);
	background: var(--accent);
}

/* Mobile: stack era over highlights. */
@media (max-width: 781px) {
	body.aibt-universal .universal-history--decade-bands .universal-history__band {
		flex-wrap: wrap !important;
		gap: 0.9rem 0 !important;
	}
	body.aibt-universal .universal-history--decade-bands .universal-history__era {
		width: 100%;
		flex-basis: 100%;
	}
	body.aibt-universal .universal-history--decade-bands .universal-history__highlights {
		flex-basis: 100%;
	}
}

/* A5: drop wide kicker tracking on small screens so the uppercase label never crowds the edge. */
@media (max-width: 640px) {
	body.aibt-universal .universal-history--decade-bands .universal-history__kicker {
		letter-spacing: 0 !important;
	}
}