/* SJ Learn Reading Ruler — optional unjust line gutter */

.sjl-reading-ruler-toggle {
	display: inline-flex;
	align-items: center;
	gap: 0.35rem;
	margin: 0 0 12px;
	padding: 6px 12px;
	font-size: 0.8125rem;
	font-weight: 600;
	line-height: 1.2;
	color: var(--color-primary, #2563eb);
	background: var(--color-bg_secondary, #f1f5f9);
	border: 1px solid var(--color-border, #cbd5e1);
	border-radius: 6px;
	cursor: pointer;
}

.sjl-reading-ruler-toggle:hover,
.sjl-reading-ruler-toggle[aria-pressed="true"] {
	background: var(--color-primary, #2563eb);
	color: #fff;
	border-color: var(--color-primary, #2563eb);
}

.sjl-reading-ruler-layout {
	display: flex;
	align-items: flex-start;
	gap: 0;
	width: 100%;
}

.sjl-reading-ruler {
	flex: 0 0 2.75rem;
	width: 2.75rem;
	user-select: none;
	pointer-events: none;
	border-right: 2px solid var(--color-border, #94a3b8);
	background: linear-gradient(
		to bottom,
		rgba(148, 163, 184, 0.08) 0%,
		rgba(148, 163, 184, 0.04) 100%
	);
}

.sjl-reading-ruler__inner {
	position: relative;
	width: 100%;
}

.sjl-reading-ruler__line {
	box-sizing: border-box;
	display: flex;
	align-items: flex-start;
	justify-content: flex-end;
	padding-right: 4px;
	border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.sjl-reading-ruler__num {
	font-size: 0.65rem;
	font-weight: 600;
	line-height: 1;
	color: var(--color-text_secondary, #64748b);
	font-variant-numeric: tabular-nums;
}

.sjl-reading-ruler__content {
	flex: 1 1 auto;
	min-width: 0;
}

/* Hide layout chrome when toggle off (content stays unwrapped) */
html:not(.sjl-reading-ruler-active) .sjl-reading-ruler-layout {
	display: block;
}

html:not(.sjl-reading-ruler-active) .sjl-reading-ruler {
	display: none;
}

@media (max-width: 640px) {
	.sjl-reading-ruler {
		flex: 0 0 2.25rem;
		width: 2.25rem;
	}

	.sjl-reading-ruler__num {
		font-size: 0.6rem;
	}
}