/**
 * Infrastructure and Facility — interior page.
 *
 * @package DBCTE_Tura
 */

.infra-page {
	padding-top: 0;
	padding-bottom: clamp(2.5rem, 5vw, 4rem);
	background: linear-gradient(180deg, #f8fafc 0%, #ffffff 35%);
}

.infra-page.section {
	padding-top: 0;
}

.infra-page__hero {
	margin: 0 calc(50% - 50vw) 0;
	width: 100vw;
	padding: clamp(1.85rem, 4vw, 2.75rem) 1.25rem;
	background:
		radial-gradient(ellipse 65% 70% at 85% 15%, color-mix(in srgb, var(--dbcte-hub-sky) 18%, transparent) 0%, transparent 50%),
		linear-gradient(155deg, var(--dbcte-primary) 0%, color-mix(in srgb, var(--dbcte-primary) 85%, #0c1929 15%) 100%);
	color: #fff;
	border-bottom: 1px solid rgba(255, 255, 255, 0.1);
	box-shadow: 0 10px 36px rgba(15, 23, 42, 0.1);
}

.infra-page__hero-inner {
	max-width: min(100%, 56rem);
	margin: 0 auto;
	text-align: center;
}

.infra-page__title {
	margin: 0;
	font-size: clamp(1.55rem, 3.6vw, 2.05rem);
	font-weight: 700;
	line-height: 1.2;
	letter-spacing: -0.02em;
	text-shadow: 0 2px 14px rgba(0, 0, 0, 0.12);
}

.infra-page__shell {
	max-width: min(100%, 56rem);
	margin: 0 auto;
	padding: clamp(1.75rem, 4vw, 2.5rem) 1rem 0;
}

.infra-page__lead {
	margin: 0 0 1.75rem;
	font-size: 1.05rem;
	line-height: 1.65;
	color: var(--dbcte-muted);
	max-width: 42rem;
}

.infra-page__sections {
	display: flex;
	flex-direction: column;
	gap: 1.35rem;
}

.infra-section {
	margin: 0;
	padding: 1.35rem 1.4rem;
	border-radius: var(--dbcte-radius);
	background: #fff;
	border: 1px solid rgba(30, 58, 138, 0.1);
	box-shadow:
		0 1px 3px rgba(30, 58, 138, 0.04),
		0 12px 32px rgba(30, 58, 138, 0.06);
	transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.infra-section:hover {
	border-color: rgba(0, 168, 225, 0.2);
	box-shadow:
		0 4px 12px rgba(30, 58, 138, 0.06),
		0 20px 44px rgba(30, 58, 138, 0.08);
}

.infra-section__title {
	margin: 0 0 0.75rem;
	font-size: 1.05rem;
	font-weight: 700;
	color: var(--dbcte-primary);
	letter-spacing: 0.01em;
	display: flex;
	align-items: flex-start;
	gap: 0.5rem;
}

.infra-section__title::before {
	content: "";
	flex-shrink: 0;
	width: 4px;
	margin-top: 0.35em;
	height: 1.1em;
	border-radius: 2px;
	background: linear-gradient(180deg, var(--dbcte-hub-sky), var(--dbcte-primary-light));
}

.infra-section__subtitle {
	margin: 1.35rem 0 0.85rem;
	font-size: 0.92rem;
	font-weight: 700;
	color: var(--dbcte-primary);
	letter-spacing: 0.02em;
}

.infra-section__body {
	margin: 0 0 1rem;
	font-size: 0.96rem;
	line-height: 1.65;
	color: var(--dbcte-text);
}

.infra-section__body p {
	margin: 0 0 0.75rem;
}

.infra-section__body p:last-child {
	margin-bottom: 0;
}

.infra-section__body + .infra-gallery {
	margin-top: 0;
}

.infra-gallery {
	display: grid;
	gap: 0.75rem;
	grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (min-width: 520px) {
	.infra-gallery--campus,
	.infra-gallery--premises,
	.infra-gallery--chem {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}
}

@media (min-width: 720px) {
	.infra-gallery--library {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}
}

.infra-gallery__item {
	margin: 0;
	padding: 0;
	border-radius: calc(var(--dbcte-radius) - 2px);
	overflow: hidden;
	background: #f1f5f9;
	border: 1px solid rgba(30, 58, 138, 0.08);
	aspect-ratio: 4 / 3;
}

.infra-gallery--library .infra-gallery__item {
	aspect-ratio: 16 / 9;
}

.infra-gallery__item img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	vertical-align: middle;
}

.infra-gallery__spotlight {
	margin: 0 auto 1rem;
	max-width: min(100%, 28rem);
	border-radius: calc(var(--dbcte-radius) - 2px);
	overflow: hidden;
	background: #f1f5f9;
	border: 1px solid rgba(30, 58, 138, 0.08);
	box-shadow: 0 8px 24px rgba(30, 58, 138, 0.08);
}

.infra-gallery__spotlight img {
	display: block;
	width: 100%;
	height: auto;
	vertical-align: middle;
}