/*
 * PHASE 2D-2 - Quiz By Class section styles.
 * Section-level only: card styling stays in jqc-quiz-cards.css.
 * Every selector is namespaced under .jqc-*.
 */

.jqc-quiz-by-class {
	display: block;
	width: 100%;
	max-width: 100%;
	margin: 0 0 2rem;
	scroll-margin-top: 90px;
}

.jqc-quiz-by-class__header {
	margin: 0 0 1rem;
}

.jqc-quiz-by-class__title {
	margin: 0;
	font-size: clamp(1.25rem, 2.4vw, 1.75rem);
	line-height: 1.25;
}

.jqc-quiz-by-class__subtitle {
	margin: 0.35rem 0 0;
	font-size: 0.95rem;
	opacity: 0.75;
}

/* ---------- Selectors (class chips / subject chips) ---------- */

.jqc-quiz-by-class__nav {
	position: relative;
	margin: 0 0 0.85rem;
	max-width: 100%;
}

.jqc-quiz-by-class__scroller {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	margin: 0;
	padding: 0;
	list-style: none;
	max-width: 100%;
}

.jqc-quiz-by-class__chip-item {
	margin: 0;
	padding: 0;
	list-style: none;
}

.jqc-quiz-by-class__chip {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	min-height: 44px;
	padding: 0.5rem 0.9rem;
	border: 1px solid rgba(0, 0, 0, 0.12);
	border-radius: 999px;
	background: rgba(0, 0, 0, 0.02);
	color: inherit;
	font-size: 0.9rem;
	font-weight: 600;
	line-height: 1.2;
	text-decoration: none;
	white-space: nowrap;
	transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.jqc-quiz-by-class__chip:hover,
.jqc-quiz-by-class__chip:focus {
	border-color: rgba(20, 65, 124, 0.35);
	background: rgba(20, 65, 124, 0.06);
	color: #14417C;
	text-decoration: none;
}

.jqc-quiz-by-class__chip:focus-visible {
	outline: 2px solid currentColor;
	outline-offset: 2px;
}

.jqc-quiz-by-class__chip.is-active,
.jqc-quiz-by-class__chip[aria-current="true"] {
	border-color: #14417C;
	background: #14417C;
	color: #FFFFFF;
}

.jqc-quiz-by-class__chip-count {
	display: inline-block;
	padding: 0.05rem 0.45rem;
	border-radius: 999px;
	background: rgba(0, 0, 0, 0.08);
	font-size: 0.75rem;
	font-weight: 700;
}

.jqc-quiz-by-class__chip.is-active .jqc-quiz-by-class__chip-count {
	background: rgba(255, 255, 255, 0.22);
}

.jqc-quiz-by-class__nav--subjects .jqc-quiz-by-class__chip {
	min-height: 40px;
	font-weight: 500;
}

.jqc-quiz-by-class__nav-label {
	display: block;
	margin: 0 0 0.4rem;
	font-size: 0.78rem;
	font-weight: 700;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	opacity: 0.65;
}

/* ---------- Results ---------- */

.jqc-quiz-by-class__results {
	margin: 1.1rem 0 0;
}

.jqc-quiz-by-class__results-heading {
	margin: 0 0 0.75rem;
	font-size: 1.05rem;
}

.jqc-quiz-by-class__grid {
	max-width: 100%;
}

.jqc-quiz-by-class--list .jqc-quiz-by-class__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 1rem;
	margin: 0;
	padding: 0;
	list-style: none;
}

.jqc-quiz-by-class__empty {
	padding: 1.25rem;
	border: 1px dashed rgba(0, 0, 0, 0.18);
	border-radius: 12px;
	text-align: center;
}

.jqc-quiz-by-class__empty-title {
	margin: 0;
	font-size: 0.98rem;
	font-weight: 600;
}

/* ---------- Tablet ---------- */

@media (max-width: 1024px) {
	.jqc-quiz-by-class__scroller {
		gap: 0.45rem;
	}
}

/* ---------- Mobile: horizontal scroll selector, no page overflow ---------- */

@media (max-width: 768px) {
	.jqc-quiz-by-class__scroller {
		flex-wrap: nowrap;
		overflow-x: auto;
		overflow-y: hidden;
		-webkit-overflow-scrolling: touch;
		scroll-snap-type: x proximity;
		padding-bottom: 0.35rem;
		scrollbar-width: thin;
	}

	.jqc-quiz-by-class__chip-item {
		flex: 0 0 auto;
		scroll-snap-align: start;
	}

	.jqc-quiz-by-class__chip {
		min-height: 44px;
		padding: 0.55rem 0.85rem;
	}
}

@media (prefers-reduced-motion: reduce) {
	.jqc-quiz-by-class__chip {
		transition: none;
	}
}