/**
 * Section: course cards, in groups. The title link stretches over the whole
 * card (one link per card, no nested links).
 */

.section-course-cards__heading {
	margin-top: 0;
}

.section-course-cards__group + .section-course-cards__group {
	margin-top: var(--space-8);
}

.section-course-cards__group-title {
	display: flex;
	gap: var(--space-3);
	align-items: center;
	margin: 0 0 var(--space-5);
	font-size: var(--step-2);
}

/* flex: none: a long group name must not squeeze the circle (tabs). */
.section-course-cards__group-icon {
	display: inline-grid;
	flex: none;
	width: 2.75rem;
	height: 2.75rem;
	border-radius: var(--radius-pill);
	background: var(--color-surface-accent);
	color: var(--color-accent);
	place-items: center;
}

.section-course-cards__list {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(min(100%, 17rem), 1fr));
	gap: var(--space-4);
	margin: 0;
	padding: 0;
	list-style: none;
}

.course-card {
	position: relative;
	display: flex;
	flex-direction: column;
	overflow: hidden;
	border: 1px solid var(--color-border);
	border-radius: var(--radius-card);
	background: var(--color-surface);
	transition: border-color var(--duration-fast) var(--ease), box-shadow var(--duration-fast) var(--ease), transform var(--duration-fast) var(--ease);
}

.course-card:hover {
	border-color: var(--color-navy);
	box-shadow: var(--shadow-raised);
}

.course-card:has(.course-card__link:focus-visible) {
	outline: 3px solid var(--color-focus);
	outline-offset: 2px;
}

.course-card__image {
	display: block;
	width: 100%;
	height: auto;
	aspect-ratio: 16 / 9;
	object-fit: cover;
}

.course-card__body {
	display: flex;
	flex: 1;
	flex-direction: column;
	padding: var(--space-5);
}

.course-card__title {
	margin: 0;
	font-size: var(--step-1);
}

.course-card__link {
	color: var(--color-navy);
	text-decoration: none;
}

/* The link covers the card. */
.course-card__link::after {
	position: absolute;
	inset: 0;
	content: "";
}

.course-card__link:focus-visible {
	outline: none;
}

.course-card__external {
	width: 1rem;
	height: 1rem;
	margin-left: var(--space-1);
	vertical-align: -0.1em;
}

.course-card__text {
	margin: var(--space-2) 0 0;
	color: var(--color-text-muted);
}

.course-card__meta {
	display: flex;
	gap: var(--space-3);
	align-items: center;
	justify-content: space-between;
	margin: auto 0 0;
	padding-top: var(--space-4);
}

.course-card__price {
	color: var(--color-accent);
	font-weight: 700;
}

.course-card__more {
	display: inline-grid;
	width: 2.25rem;
	height: 2.25rem;
	margin-left: auto;
	border-radius: var(--radius-pill);
	background: var(--color-surface-alt);
	color: var(--color-navy);
	place-items: center;
}

/* ---------- Tabs: groups on the left, the chosen group's courses on the right ---------- */

/* Without JS: no tab list, every group shows (as in the groups view). */
.course-tabs__list {
	display: none;
}

/* Phones: the tabs as a 2 × 2 grid, every group visible. */
.js .course-tabs__list {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: var(--space-2);
	margin-bottom: var(--space-6);
}

/* With JS the tab names the group; its heading stays for screen readers. */
.js .course-tabs .section-course-cards__group-title {
	position: absolute;
	width: 1px;
	height: 1px;
	overflow: hidden;
	clip-path: inset(50%);
	white-space: nowrap;
}

.js .course-tabs .section-course-cards__group.is-inactive,
.course-tabs .section-course-cards__group[hidden] {
	display: none;
}

.js .course-tabs .section-course-cards__group + .section-course-cards__group {
	margin-top: 0;
}

.course-tabs__tab {
	display: inline-flex;
	flex-shrink: 0;
	gap: var(--space-3);
	align-items: center;
	min-height: 44px;
	padding: var(--space-2) var(--space-3);
	border: 1px solid var(--color-border-strong);
	border-radius: var(--radius-card);
	background: var(--color-surface);
	color: var(--color-navy);
	font-family: var(--font-heading);
	font-size: var(--step--1);
	font-weight: 600;
	line-height: 1.25;
	text-align: left;
	cursor: pointer;
	transition: background-color var(--duration-fast) var(--ease), border-color var(--duration-fast) var(--ease);
}

.course-tabs__tab .section-course-cards__group-icon {
	display: none;
	width: 2.25rem;
	height: 2.25rem;
}

.course-tabs__tab .icon {
	width: 1.25rem;
	height: 1.25rem;
}

.course-tabs__tab:hover {
	border-color: var(--color-navy);
}

/* Selected: filled navy (not color alone: aria-selected for screen readers). */
.course-tabs__tab[aria-selected="true"] {
	border-color: var(--color-navy);
	background: var(--color-navy);
	color: var(--color-text-inverse);
}

.course-tabs__tab[aria-selected="true"] .section-course-cards__group-icon {
	background: var(--color-surface);
}

.course-tabs__count {
	display: inline-grid;
	min-width: 1.75rem;
	height: 1.75rem;
	margin-left: auto;
	padding: 0 var(--space-2);
	border-radius: var(--radius-pill);
	background: var(--color-surface-alt);
	color: var(--color-navy);
	font-size: 0.875rem;
	place-items: center;
}

@media (min-width: 56rem) {

	.js .course-tabs {
		display: grid;
		grid-template-columns: 17rem minmax(0, 1fr);
		gap: var(--space-7);
		align-items: start;
	}

	.js .course-tabs__list {
		grid-template-columns: 1fr;
		margin: 0;
	}

	.course-tabs__tab {
		padding: var(--space-3) var(--space-4) var(--space-3) var(--space-2);
		font-size: var(--step-0);
	}

	.course-tabs__tab .section-course-cards__group-icon {
		display: inline-grid;
	}

	.course-tabs .section-course-cards__list {
		grid-template-columns: repeat(auto-fill, minmax(min(100%, 15rem), 1fr));
	}
}