/*
 * Gallery page gallery section — US-GAL-02
 *
 * Light band that follows the dark hero, so adjacent sections differ in both
 * layout and background. Composition, per DESIGN.md:
 *   - asymmetric section head (copy ~60% beside a stats rail ~40%)
 *   - bento photo grid with varying cell spans and varying photo aspect ratios
 *   - split note band (copy beside a real photo) to close the section
 *
 * Responsive behaviour:
 *   Desktop (>1024px) : 4-column bento, feature/wide tiles span 2 columns
 *   Tablet (<=1024px) : 2-column grid, head stacks, note band stacks
 *   Mobile  (<=640px) : single column, full-width button, 4:3 photos
 *
 * Every colour / type / spacing / radius / shadow / duration value is a design
 * token from assets/css/design-tokens.css — no hard-coded hex values.
 */

/* ---------- band ---------- */
.amber-gal-sec {
	padding: var(--space-section) 0;
	background-color: var(--color-bg);
	color: var(--color-text);
	font-family: var(--font-body);
	font-size: var(--text-base);
	line-height: var(--leading-normal);
}

.amber-gal-sec__container {
	max-width: var(--container-max);
	margin: 0 auto;
	padding: 0 var(--container-padding);
}

/* ---------- asymmetric section head ---------- */
.amber-gal-sec__head {
	display: grid;
	grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
	gap: var(--space-10);
	align-items: end;
	margin-bottom: var(--space-12);
}

.amber-gal-sec__head-copy {
	min-width: 0;
}

.amber-gal-sec__eyebrow {
	margin: 0 0 var(--space-3);
	color: var(--color-accent-700);
	font-family: var(--font-body);
	font-size: var(--text-sm);
	font-weight: 700;
	letter-spacing: var(--letter-wide);
	text-transform: uppercase;
}

.amber-gal-sec__heading {
	margin: 0 0 var(--space-5);
	color: var(--color-text);
	font-family: var(--font-heading);
	font-size: var(--text-3xl);
	font-weight: 700;
	letter-spacing: var(--letter-tighter);
	line-height: var(--leading-tight);
}

.amber-gal-sec__intro {
	max-width: var(--measure);
	margin: 0;
	color: var(--color-text-muted);
	font-size: var(--text-lg);
	line-height: var(--leading-normal);
}

/* stats rail */
.amber-gal-sec__stats {
	display: grid;
	gap: var(--space-4);
	margin: 0;
	padding: var(--space-6);
	border: 1px solid var(--color-border);
	border-radius: var(--radius-lg);
	background-color: var(--color-surface);
	box-shadow: var(--shadow-sm);
}

.amber-gal-sec__stat + .amber-gal-sec__stat {
	padding-top: var(--space-4);
	border-top: 1px solid var(--color-border);
}

.amber-gal-sec__stat-value {
	margin: 0;
	color: var(--color-primary-700);
	font-family: var(--font-heading);
	font-size: var(--text-xl);
	font-weight: 600;
	letter-spacing: var(--letter-tight);
	line-height: var(--leading-tight);
}

.amber-gal-sec__stat-label {
	margin: var(--space-1) 0 0;
	color: var(--color-text-muted);
	font-size: var(--text-sm);
	line-height: var(--leading-snug);
}

/* ---------- bento photo grid ---------- */
.amber-gal-sec__grid {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: var(--space-6);
	margin: 0;
	padding: 0;
	list-style: none;
	/* the hero CTA links to #amber-gallery-grid */
	scroll-margin-top: calc(var(--header-height) + var(--space-6));
}

.amber-gal-sec__item {
	min-width: 0;
}

.amber-gal-sec__item--feature,
.amber-gal-sec__item--wide {
	grid-column: span 2;
}

.amber-gal-sec__card {
	display: flex;
	flex-direction: column;
	height: 100%;
	margin: 0;
	overflow: hidden;
	border: 1px solid var(--color-border);
	border-radius: var(--radius-lg);
	background-color: var(--color-surface);
	box-shadow: var(--shadow-sm);
	transition:
		box-shadow var(--duration-normal) var(--ease-default),
		transform var(--duration-normal) var(--ease-default),
		border-color var(--duration-normal) var(--ease-default);
}

.amber-gal-sec__card:hover,
.amber-gal-sec__card:focus-within {
	border-color: var(--color-primary-300);
	box-shadow: var(--shadow-lg);
	transform: translateY(-4px);
}

/* photo frame — the varying aspect ratios are what makes the grid read bento */
.amber-gal-sec__frame {
	position: relative;
	overflow: hidden;
	aspect-ratio: 1 / 1;
	background-color: var(--color-surface-raised);
}

.amber-gal-sec__item--feature .amber-gal-sec__frame {
	aspect-ratio: 4 / 3;
}

.amber-gal-sec__item--wide .amber-gal-sec__frame {
	aspect-ratio: 16 / 9;
}

.amber-gal-sec__item--tall .amber-gal-sec__frame {
	aspect-ratio: 3 / 4;
}

.amber-gal-sec__photo {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform var(--duration-slow) var(--ease-default);
}

.amber-gal-sec__card:hover .amber-gal-sec__photo,
.amber-gal-sec__card:focus-within .amber-gal-sec__photo {
	transform: scale(1.04);
}

.amber-gal-sec__badge {
	position: absolute;
	top: var(--space-3);
	left: var(--space-3);
	padding: var(--space-1) var(--space-3);
	border-radius: var(--radius-full);
	background-color: var(--color-highlight-100);
	color: var(--color-highlight-800);
	font-size: var(--text-xs);
	font-weight: 700;
	letter-spacing: var(--letter-wide);
	text-transform: uppercase;
	box-shadow: var(--shadow-sm);
}

.amber-gal-sec__caption {
	display: flex;
	flex: 1 1 auto;
	flex-direction: column;
	gap: var(--space-2);
	padding: var(--space-5);
}

.amber-gal-sec__card-title {
	color: var(--color-text);
	font-family: var(--font-heading);
	font-size: var(--text-lg);
	font-weight: 600;
	letter-spacing: var(--letter-tight);
	line-height: var(--leading-snug);
}

.amber-gal-sec__card-text {
	color: var(--color-text-muted);
	font-size: var(--text-sm);
	line-height: var(--leading-normal);
}

/* ---------- closing note band (dark, split) ---------- */
.amber-gal-sec__note {
	display: grid;
	grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
	gap: 0;
	margin-top: var(--space-16);
	overflow: hidden;
	border-radius: var(--radius-xl);
	background-color: var(--color-bg-dark);
	box-shadow: var(--shadow-lg);
}

.amber-gal-sec__note-copy {
	padding: var(--space-12) var(--space-10);
}

.amber-gal-sec__note-title {
	margin: 0 0 var(--space-4);
	color: var(--color-text-on-dark);
	font-family: var(--font-heading);
	font-size: var(--text-2xl);
	font-weight: 600;
	letter-spacing: var(--letter-tight);
	line-height: var(--leading-tight);
}

.amber-gal-sec__note-text {
	max-width: var(--measure);
	margin: 0 0 var(--space-4);
	color: var(--color-text-muted-on-dark);
	font-size: var(--text-base);
	line-height: var(--leading-normal);
}

.amber-gal-sec__note-address {
	margin: 0 0 var(--space-6);
	color: var(--color-highlight-300);
	font-size: var(--text-sm);
	font-weight: 500;
	letter-spacing: var(--letter-wide);
	text-transform: uppercase;
}

.amber-gal-sec__btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 44px;
	padding: 0 var(--space-6);
	border: 1px solid transparent;
	border-radius: var(--radius-md);
	background-color: var(--color-accent-500);
	color: var(--color-primary-900);
	font-family: var(--font-heading);
	font-size: var(--text-base);
	font-weight: 600;
	text-decoration: none;
	transition:
		background-color var(--duration-fast) var(--ease-default),
		transform var(--duration-fast) var(--ease-default);
}

.amber-gal-sec__btn:hover {
	background-color: var(--color-accent-400);
	transform: translateY(-2px);
}

.amber-gal-sec__btn:focus-visible {
	outline: 2px solid var(--color-highlight-400);
	outline-offset: 2px;
}

.amber-gal-sec__note-media {
	min-height: 260px;
	background-color: var(--color-surface-dark);
	background-image: var(--amber-gs-note-image, none);
	background-position: center;
	background-repeat: no-repeat;
	background-size: cover;
}

/* ---------- dark theme ----------
 * Every surface in this band is re-pointed at the dark token set so no panel
 * can ship light-on-light when [data-theme="dark"] is set on the document.
 * The closing note band is already dark by design and needs no override.
 */
[data-theme="dark"] .amber-gal-sec {
	background-color: var(--color-bg-dark);
	color: var(--color-text-on-dark);
}

[data-theme="dark"] .amber-gal-sec__heading,
[data-theme="dark"] .amber-gal-sec__card-title {
	color: var(--color-text-on-dark);
}

[data-theme="dark"] .amber-gal-sec__intro,
[data-theme="dark"] .amber-gal-sec__stat-label,
[data-theme="dark"] .amber-gal-sec__card-text {
	color: var(--color-text-muted-on-dark);
}

[data-theme="dark"] .amber-gal-sec__eyebrow {
	color: var(--color-accent-300);
}

[data-theme="dark"] .amber-gal-sec__stats,
[data-theme="dark"] .amber-gal-sec__card {
	border-color: var(--color-border-dark);
	background-color: var(--color-surface-dark);
}

[data-theme="dark"] .amber-gal-sec__stat + .amber-gal-sec__stat {
	border-top-color: var(--color-border-dark);
}

[data-theme="dark"] .amber-gal-sec__stat-value {
	color: var(--color-secondary-300);
}

[data-theme="dark"] .amber-gal-sec__frame {
	background-color: var(--color-surface-dark-elevated);
}

[data-theme="dark"] .amber-gal-sec__card:hover,
[data-theme="dark"] .amber-gal-sec__card:focus-within {
	border-color: var(--color-primary-500);
}

[data-theme="dark"] .amber-gal-sec__note {
	border: 1px solid var(--color-border-dark);
	background-color: var(--color-surface-dark);
}

[data-theme="dark"] .amber-gal-sec__note-media {
	background-color: var(--color-surface-dark-elevated);
}

/* ---------- tablet ---------- */
@media (max-width: 1024px) {
	.amber-gal-sec__head {
		grid-template-columns: minmax(0, 1fr);
		gap: var(--space-8);
		align-items: start;
	}

	.amber-gal-sec__heading {
		font-size: var(--text-2xl);
	}

	.amber-gal-sec__stats {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.amber-gal-sec__stat + .amber-gal-sec__stat {
		padding-top: 0;
		border-top: 0;
	}

	.amber-gal-sec__grid {
		grid-template-columns: repeat(2, minmax(0, 1fr));
		gap: var(--space-5);
	}

	.amber-gal-sec__item--feature,
	.amber-gal-sec__item--wide {
		grid-column: span 2;
	}

	.amber-gal-sec__item--tall .amber-gal-sec__frame {
		aspect-ratio: 1 / 1;
	}

	.amber-gal-sec__note {
		grid-template-columns: minmax(0, 1fr);
	}

	.amber-gal-sec__note-media {
		order: -1;
		min-height: 220px;
	}

	.amber-gal-sec__note-copy {
		padding: var(--space-10) var(--space-8);
	}
}

/* ---------- mobile ---------- */
@media (max-width: 640px) {
	.amber-gal-sec__heading {
		font-size: var(--text-xl);
	}

	.amber-gal-sec__intro {
		font-size: var(--text-base);
	}

	.amber-gal-sec__stats {
		grid-template-columns: minmax(0, 1fr);
		padding: var(--space-5);
	}

	.amber-gal-sec__grid {
		grid-template-columns: minmax(0, 1fr);
		gap: var(--space-5);
	}

	.amber-gal-sec__item--feature,
	.amber-gal-sec__item--wide,
	.amber-gal-sec__item--tall {
		grid-column: span 1;
	}

	.amber-gal-sec__item .amber-gal-sec__frame,
	.amber-gal-sec__item--feature .amber-gal-sec__frame,
	.amber-gal-sec__item--wide .amber-gal-sec__frame,
	.amber-gal-sec__item--tall .amber-gal-sec__frame {
		aspect-ratio: 4 / 3;
	}

	.amber-gal-sec__caption {
		padding: var(--space-4);
	}

	.amber-gal-sec__note {
		margin-top: var(--space-12);
	}

	.amber-gal-sec__note-copy {
		padding: var(--space-8) var(--space-5);
	}

	.amber-gal-sec__note-title {
		font-size: var(--text-xl);
	}

	.amber-gal-sec__btn {
		width: 100%;
	}
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
	.amber-gal-sec__card,
	.amber-gal-sec__photo,
	.amber-gal-sec__btn {
		transition: none;
	}

	.amber-gal-sec__card:hover,
	.amber-gal-sec__card:focus-within {
		transform: none;
	}

	.amber-gal-sec__card:hover .amber-gal-sec__photo,
	.amber-gal-sec__card:focus-within .amber-gal-sec__photo {
		transform: none;
	}

	.amber-gal-sec__btn:hover {
		transform: none;
	}
}