/* ==========================================================================
   Proof Cards Block
   Block root: .fu-proof-cards
   ========================================================================== */

/* --------------------------------------------------------------------------
   Block-level custom properties
   -------------------------------------------------------------------------- */

.fu-proof-cards {
	/* Local palette — single-source color values for this block. */
	--pc-color-ink: #1f1f1f;
	--pc-color-muted-dark: #5a5a5a;
	--pc-color-subtle-mid: #7a7a7a;
	--pc-color-border-light: #e2e2e0;
	--pc-color-surface-light: #f7f7f5;
	--pc-color-navy-dark: #07111f;
	--pc-color-navy: #103f67;
	--pc-color-muted-light: #d2dae3;
	--pc-color-subtle-light: #c3ccd7;
	--pc-color-warm-surface: #fdf6ec;
	--pc-color-card-dark-bg: rgb(255 255 255 / 0.1);
	--pc-color-card-dark-border: rgb(255 255 255 / 0.17);
	--pc-color-card-dark-elevated-bg: rgb(255 255 255 / 0.12);
	--pc-color-card-dark-elevated-border: rgb(255 255 255 / 0.2);
	--pc-color-card-dark-bordered-bg: rgb(255 255 255 / 0.08);
	--pc-color-card-dark-bordered-border: rgb(255 255 255 / 0.28);
	--pc-color-empty-text: #888;
	--pc-color-empty-border: #ddd;
	--pc-color-focus-default: #153a5d;
	--pc-color-focus-dark: #ffffff;

	/* Layout & spacing */
	--pc-gap: var(--fu-space-md);
	--pc-padding-block: var(--fu-space-xl);
	--pc-section-spacing-block: clamp(2rem, 1.5rem + 2vw, 3rem);
	--pc-container-max: 1200px;
	--pc-card-padding: var(--fu-space-md);
	--pc-card-radius: var(--fu-radius-lg);

	/* Semantic roles — variants override these, not scattered literals. */
	--pc-section-bg: transparent;
	--pc-section-text: var(--fu-blue);
	--pc-section-muted: var(--pc-color-muted-dark);
	--pc-section-eyebrow: var(--fu-orange);

	/* Card surface */
	--pc-card-bg: var(--fu-white);
	--pc-card-border: var(--pc-color-border-light);
	--pc-card-shadow: none;
	--pc-card-text: var(--fu-blue);
	--pc-card-muted: var(--pc-color-muted-dark);
	--pc-card-subtle: var(--pc-color-subtle-mid);

	/* Featured card accent */
	--pc-featured-accent: color-mix(
		in srgb,
		var(--pc-card-text) 30%,
		transparent
	);
	--pc-featured-bg: color-mix(
		in srgb,
		var(--pc-card-bg) 85%,
		var(--pc-color-surface-light)
	);
	--pc-featured-border: color-mix(
		in srgb,
		var(--pc-card-text) 16%,
		var(--pc-card-border)
	);
	--pc-featured-shadow: var(--pc-card-shadow);

	/* Metric display */
	--pc-metric-color: var(--fu-blue);
	--pc-metric-label-color: var(--pc-color-muted-dark);

	/* Label pill */
	--pc-label-bg: transparent;
	--pc-label-color: var(--fu-orange);
	--pc-label-border: currentColor;

	/* Link */
	--pc-link-color: var(--fu-blue);

	/* Source attribution */
	--pc-source-bg: transparent;
	--pc-source-border: color-mix(in srgb, var(--pc-card-text) 12%, transparent);
	--pc-source-name: var(--pc-card-text);
	--pc-source-detail: var(--pc-card-muted);
	--pc-source-image-bg: color-mix(in srgb, var(--pc-card-text) 3%, transparent);
	--pc-source-image-border: color-mix(
		in srgb,
		var(--pc-card-text) 12%,
		transparent
	);

	/* Focus ring */
	--pc-focus-ring: var(--pc-color-focus-default);

	/* Quote accent — used by .fu-proof-card--is-quote */
	--pc-quote-accent: color-mix(in srgb, var(--pc-card-text) 30%, transparent);

	padding-block: var(--pc-section-spacing-block);
	color: var(--pc-section-text);
}

/* --------------------------------------------------------------------------
   Background style variants
   -------------------------------------------------------------------------- */

.fu-proof-cards--bg-cool {
	--pc-section-bg: linear-gradient(
		180deg,
		color-mix(in srgb, var(--fu-blue) 6%, var(--fu-white)),
		color-mix(in srgb, var(--pc-color-ink) 5%, var(--fu-white))
	);
	--pc-card-bg: color-mix(in srgb, var(--fu-blue) 3%, var(--fu-white));
	--pc-featured-bg: color-mix(in srgb, var(--fu-blue) 8%, var(--fu-white));
}

.fu-proof-cards--bg-warm {
	--pc-section-bg: var(--fu-beige);
	--pc-card-bg: color-mix(
		in srgb,
		var(--pc-color-warm-surface) 42%,
		var(--fu-white)
	);
	--pc-featured-bg: color-mix(
		in srgb,
		var(--pc-color-warm-surface) 68%,
		var(--fu-white)
	);
}

.fu-proof-cards--bg-none {
	--pc-card-bg: color-mix(
		in srgb,
		var(--pc-color-surface-light) 36%,
		var(--fu-white)
	);
	--pc-featured-bg: color-mix(
		in srgb,
		var(--pc-color-surface-light) 64%,
		var(--fu-white)
	);
}

.fu-proof-cards--bg-dark {
	--pc-section-bg: radial-gradient(
			120% 120% at 0% 0%,
			color-mix(in srgb, var(--pc-color-muted-light) 9%, transparent) 0%,
			transparent 56%
		),
		linear-gradient(
			180deg,
			color-mix(in srgb, var(--pc-color-navy) 92%, #0e1f34) 0%,
			color-mix(in srgb, var(--pc-color-navy-dark) 84%, #10233c) 52%,
			color-mix(in srgb, var(--pc-color-navy-dark) 90%, #000000) 100%
		);
	--pc-section-text: var(--fu-white);
	--pc-section-muted: var(--pc-color-muted-light);
	--pc-section-eyebrow: var(--fu-orange);

	--pc-card-bg: var(--pc-color-card-dark-bg);
	--pc-card-border: var(--pc-color-card-dark-border);
	--pc-card-text: var(--fu-white);
	--pc-card-muted: var(--pc-color-muted-light);
	--pc-card-subtle: var(--pc-color-subtle-light);

	--pc-metric-color: var(--fu-white);
	--pc-metric-label-color: var(--pc-color-muted-light);

	--pc-label-color: var(--fu-orange);
	--pc-link-color: var(--fu-white);
	--pc-focus-ring: var(--pc-color-focus-dark);
	--pc-source-bg: transparent;
	--pc-source-border: color-mix(in srgb, var(--pc-card-text) 17%, transparent);
	--pc-source-name: var(--pc-card-text);
	--pc-source-detail: var(--pc-card-muted);
	--pc-source-image-bg: color-mix(in srgb, var(--pc-card-text) 8%, transparent);
	--pc-source-image-border: color-mix(
		in srgb,
		var(--pc-card-text) 20%,
		transparent
	);
	--pc-featured-bg: rgb(255 255 255 / 0.155);
	--pc-featured-border: color-mix(
		in srgb,
		var(--pc-card-text) 25%,
		var(--pc-card-border)
	);
	--pc-featured-shadow: 0 20px 46px rgb(0 0 0 / 0.28),
		0 1px 0 rgb(255 255 255 / 0.05) inset;
	--pc-quote-accent: color-mix(
		in srgb,
		var(--pc-color-muted-light) 55%,
		transparent
	);
}

/* Dark + card style overrides */
.fu-proof-cards--bg-dark.fu-proof-cards--style-elevated {
	--pc-card-bg: var(--pc-color-card-dark-elevated-bg);
	--pc-card-border: var(--pc-color-card-dark-elevated-border);
}

.fu-proof-cards--bg-dark.fu-proof-cards--style-bordered {
	--pc-card-bg: var(--pc-color-card-dark-bordered-bg);
	--pc-card-border: var(--pc-color-card-dark-bordered-border);
}

/* Dark elevated style needs a little extra depth to separate from the section
   without creating a harsh floating effect. */
.fu-proof-cards--bg-dark.fu-proof-cards--style-elevated .fu-proof-card {
	box-shadow: 0 18px 40px rgb(0 0 0 / 0.28),
		0 1px 0 rgb(255 255 255 / 0.06) inset;
}

/* --------------------------------------------------------------------------
   Card style variants
   -------------------------------------------------------------------------- */

.fu-proof-cards--style-default .fu-proof-card {
	--pc-card-shadow: none;
	border: 1px solid var(--pc-card-border);
}

.fu-proof-cards--style-bordered .fu-proof-card {
	--pc-card-shadow: none;
	border: 2px solid var(--pc-card-border);
}

.fu-proof-cards--style-elevated .fu-proof-card {
	--pc-card-shadow: 0 4px 20px rgb(0 0 0 / 0.08),
		0 1px 4px rgb(0 0 0 / 0.04);
	border: 1px solid var(--pc-card-border);
}

/* --------------------------------------------------------------------------
   Inner container
   -------------------------------------------------------------------------- */

.fu-proof-cards__panel {
	padding-block: var(--pc-padding-block);
	background: var(--pc-section-bg);
	color: var(--pc-section-text);
	box-shadow: 0 18px 48px rgb(13 59 102 / 0.06);
	overflow: hidden;
}

.fu-proof-cards--bg-none .fu-proof-cards__panel {
	border-color: transparent;
	box-shadow: none;
}

.fu-proof-cards--bg-dark .fu-proof-cards__panel {
	border-color: rgb(255 255 255 / 0.14);
	box-shadow: 0 22px 54px rgb(13 59 102 / 0.18);
}

.fu-proof-cards__container {
	max-width: var(--pc-container-max);
	margin-inline: auto;
	padding-inline: var(--fu-space-md);
}

.fu-proof-cards--bg-none .fu-proof-cards__container {
	padding-inline: 0;
}

/* --------------------------------------------------------------------------
   Section header
   -------------------------------------------------------------------------- */

.fu-proof-cards__header {
	text-align: center;
	max-width: 68ch;
	margin-inline: auto;
	margin-bottom: var(--fu-space-lg);
}

.fu-proof-cards__eyebrow {
	font-size: 0.8125rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	color: var(--pc-section-eyebrow);
	margin: 0 0 var(--fu-space-xs);
}

.fu-proof-cards__heading {
	font-size: clamp(1.75rem, 3.5vw, 2.5rem);
	color: var(--pc-section-text);
	line-height: 1.15;
	margin: 0 0 var(--fu-space-sm);
}

.fu-proof-cards__intro {
	font-size: clamp(1rem, 1.5vw, 1.125rem);
	color: var(--pc-section-muted);
	line-height: 1.6;
	margin: 0;
	text-wrap: balance;
}

/* --------------------------------------------------------------------------
   Card grid — mobile first: single column
   -------------------------------------------------------------------------- */

.fu-proof-cards__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--pc-gap);
	margin: 0;
	padding: 0;
}

/* Editor parity: make InnerBlocks wrappers act as the active grid container. */
.fu-proof-cards__grid > .acf-innerblocks-container,
.fu-proof-cards__grid > .block-editor-block-list__layout {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--pc-gap);
	width: 100%;
	min-width: 0;
	align-items: stretch;
	margin: 0;
	padding: 0;
}

/* Stretch editor child wrappers so cards fill each grid cell. */
.fu-proof-cards__grid
	> .acf-innerblocks-container
	> .block-editor-block-list__block,
.fu-proof-cards__grid
	> .block-editor-block-list__layout
	> .block-editor-block-list__block,
.fu-proof-cards__grid
	> .acf-innerblocks-container
	> .wp-block-acf-fu-proof-card,
.fu-proof-cards__grid
	> .block-editor-block-list__layout
	> .wp-block-acf-fu-proof-card {
	height: 100%;
	width: 100%;
	max-width: none;
	min-width: 0;
	justify-self: stretch;
	align-self: stretch;
	display: flex;
}

.fu-proof-cards__grid
	> .acf-innerblocks-container
	> .block-editor-block-list__block
	> .wp-block,
.fu-proof-cards__grid
	> .block-editor-block-list__layout
	> .block-editor-block-list__block
	> .wp-block,
.fu-proof-cards__grid .wp-block-acf-fu-proof-card > .acf-block-preview,
.fu-proof-cards__grid
	.wp-block-acf-fu-proof-card
	> .acf-block-preview
	> .acf-block-component {
	display: flex;
	width: 100%;
	max-width: none;
	min-width: 0;
	height: 100%;
}

.fu-proof-cards__grid .wp-block-acf-fu-proof-card .fu-proof-card {
	width: 100%;
	height: 100%;
	max-width: none;
	min-width: 0;
}

/* Tablet: 2 columns */
@media (min-width: 768px) {
	/* Frontend only: child cards render directly in grid. */
	.fu-proof-cards__grid:not(:has(> .acf-innerblocks-container)) {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	/* Editor only: InnerBlocks wrapper is the active grid container. */
	.fu-proof-cards__grid > .acf-innerblocks-container,
	.fu-proof-cards__grid > .block-editor-block-list__layout {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

/* Desktop: auto-fit 3 columns for grid layout */
@media (min-width: 1024px) {
	.fu-proof-cards--layout-grid
		.fu-proof-cards__grid:not(:has(> .acf-innerblocks-container)) {
		grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	}

	.fu-proof-cards--layout-grid
		.fu-proof-cards__grid
		> .acf-innerblocks-container,
	.fu-proof-cards--layout-grid
		.fu-proof-cards__grid
		> .block-editor-block-list__layout {
		grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	}
}

/* --------------------------------------------------------------------------
   Featured First layout
   -------------------------------------------------------------------------- */

/* Featured cards span two columns at tablet+ in featured-first layout.
   Frontend spans the card article; editor spans the matching block wrappers. */
@media (min-width: 768px) {
	.fu-proof-cards--layout-featured-first
		.fu-proof-cards__grid:not(:has(> .acf-innerblocks-container))
		> .fu-proof-card--featured {
		grid-column: span 2;
	}

	.fu-proof-cards--layout-featured-first
		.fu-proof-cards__grid
		> .acf-innerblocks-container
		> .wp-block-acf-fu-proof-card:has(.fu-proof-card--featured),
	.fu-proof-cards--layout-featured-first
		.fu-proof-cards__grid
		> .acf-innerblocks-container
		> .block-editor-block-list__block[data-type="acf/fu-proof-card"]:has(.fu-proof-card--featured),
	.fu-proof-cards--layout-featured-first
		.fu-proof-cards__grid
		> .block-editor-block-list__layout
		.wp-block-acf-fu-proof-card:has(.fu-proof-card--featured),
	.fu-proof-cards--layout-featured-first
		.fu-proof-cards__grid
		> .block-editor-block-list__layout
		.block-editor-block-list__block[data-type="acf/fu-proof-card"]:has(.fu-proof-card--featured) {
		grid-column: span 2;
	}
}

/* At desktop in featured-first, keep 3-column underlying grid so standard
   cards sit 3 across and featured spans 2 of those columns cleanly. */
@media (min-width: 1024px) {
	.fu-proof-cards--layout-featured-first
		.fu-proof-cards__grid:not(:has(> .acf-innerblocks-container)) {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}

	.fu-proof-cards--layout-featured-first
		.fu-proof-cards__grid
		> .acf-innerblocks-container,
	.fu-proof-cards--layout-featured-first
		.fu-proof-cards__grid
		> .block-editor-block-list__layout {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}
}

/* --------------------------------------------------------------------------
   Odd-card orphan spanning — tablet 2-column range
   -------------------------------------------------------------------------- */

@media (min-width: 768px) and (max-width: 1023px) {
	.fu-proof-cards--layout-grid
		.fu-proof-cards__grid
		> .fu-proof-card:last-child:nth-child(odd) {
		grid-column: 1 / -1;
	}
}

/* --------------------------------------------------------------------------
   Card base
   -------------------------------------------------------------------------- */

.fu-proof-card {
	background: var(--pc-card-bg);
	border-radius: var(--pc-card-radius);
	box-shadow: var(--pc-card-shadow);
	padding: var(--pc-card-padding);
	color: var(--pc-card-text);
	display: flex;
	flex-direction: column;
	gap: var(--fu-space-sm);
	position: relative;
	transition: box-shadow 0.2s ease;
	min-width: 0;
}

/* Featured card visual distinction */
.fu-proof-card--featured {
	background: var(--pc-featured-bg);
	border-color: var(--pc-featured-border);
	box-shadow: var(--pc-featured-shadow);
}

.fu-proof-cards--style-bordered .fu-proof-card--featured {
	border-width: 2px;
}

.fu-proof-cards--style-elevated .fu-proof-card--featured {
	box-shadow: 0 12px 30px rgb(0 0 0 / 0.13),
		0 1px 0 rgb(255 255 255 / 0.06) inset;
}

/* At wider sizes, featured cards should use extra horizontal space with
   stronger rhythm and controlled line length instead of feeling stretched. */
@media (min-width: 768px) {
	.fu-proof-cards--layout-featured-first .fu-proof-card--featured {
		padding: clamp(1.2rem, 2vw, 1.7rem);
		padding-top: clamp(1.35rem, 2vw, 1.75rem);
		gap: clamp(0.95rem, 1.5vw, 1.35rem);
	}

	.fu-proof-cards--layout-featured-first
		.fu-proof-card--featured
		.fu-proof-card__metric-value {
		font-size: clamp(2.2rem, 4vw, 3rem);
	}

	.fu-proof-cards--layout-featured-first
		.fu-proof-card--featured
		.fu-proof-card__statement,
	.fu-proof-cards--layout-featured-first
		.fu-proof-card--featured
		.fu-proof-card__source {
		max-width: 68ch;
	}

	.fu-proof-cards--layout-featured-first
		.fu-proof-card--featured
		.fu-proof-card__statement
		p {
		font-size: clamp(1.04rem, 1.52vw, 1.2rem);
		line-height: 1.74;
	}

	.fu-proof-cards--layout-featured-first
		.fu-proof-card--featured:has(.fu-proof-card__metric)
		.fu-proof-card__metric-value {
		font-size: clamp(2.45rem, 4.6vw, 3.35rem);
	}

	.fu-proof-cards--layout-featured-first
		.fu-proof-card--featured
		.fu-proof-card__source {
		padding-top: clamp(1.1rem, 1.7vw, 1.25rem);
	}

	.fu-proof-cards--layout-featured-first
		.fu-proof-card--featured
		.fu-proof-card__link {
		font-size: 0.9rem;
	}

	.fu-proof-cards--layout-featured-first
		.fu-proof-card--featured:not(:has(.fu-proof-card__metric))
		.fu-proof-card__statement {
		max-width: 64ch;
	}
}

@media (min-width: 1024px) {
	.fu-proof-cards--layout-featured-first .fu-proof-card--featured {
		padding: clamp(1.4rem, 2.1vw, 2.15rem);
		padding-top: clamp(1.55rem, 2.2vw, 1.95rem);
	}

	.fu-proof-cards--layout-featured-first
		.fu-proof-card--featured
		.fu-proof-card__statement {
		max-width: 65ch;
	}

	.fu-proof-cards--layout-featured-first
		.fu-proof-card--featured
		.fu-proof-card__source {
		max-width: 44ch;
	}

	.fu-proof-cards--layout-featured-first
		.fu-proof-card--featured
		.fu-proof-card__link {
		margin-top: clamp(0.2rem, 0.6vw, 0.45rem);
	}
}

/* --------------------------------------------------------------------------
   Card label
   -------------------------------------------------------------------------- */

.fu-proof-card__label {
	font-size: 0.6875rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	color: var(--pc-label-color);
	margin: 0;
	line-height: 1;
}

/* --------------------------------------------------------------------------
   Metric display
   -------------------------------------------------------------------------- */

.fu-proof-card__metric {
	display: flex;
	flex-direction: column;
	gap: 0.125rem;
}

.fu-proof-card__metric-value {
	font-size: clamp(2rem, 4vw, 2.75rem);
	font-weight: 800;
	line-height: 1;
	color: var(--pc-metric-color);
	margin: 0;
	letter-spacing: -0.02em;
}

.fu-proof-card__metric-label {
	font-size: 0.875rem;
	color: var(--pc-metric-label-color);
	line-height: 1.4;
	margin: 0;
}

/* --------------------------------------------------------------------------
   Statement / blockquote
   -------------------------------------------------------------------------- */

.fu-proof-card__statement {
	margin: 0;
	padding: 0;
	border: none;
	flex: 1; /* Push source to bottom of card. */
}

.fu-proof-card__statement-inner {
	margin: 0;
}

.fu-proof-card__statement p {
	font-size: clamp(0.9375rem, 1.5vw, 1.0625rem);
	line-height: 1.65;
	color: var(--pc-card-text);
	margin: 0;
	font-style: italic;
}

/* --------------------------------------------------------------------------
   Quote treatment modifier
   -------------------------------------------------------------------------- */

.fu-proof-card--is-quote .fu-proof-card__statement-inner {
	padding-inline-start: clamp(0.875rem, 1.5vw, 1.1rem);
	border-inline-start: 2px solid var(--pc-quote-accent);
}

/* --------------------------------------------------------------------------
   Source attribution footer
   -------------------------------------------------------------------------- */

.fu-proof-card__source {
	display: flex;
	align-items: center;
	gap: var(--fu-space-sm);
	margin-top: auto;
	padding: clamp(1rem, 2vw, 1.25rem) 0 0;
	border-top: 1px solid var(--pc-source-border);
	background: var(--pc-source-bg);
	color: inherit;
	text-align: left;
}

.fu-proof-card__image-wrap {
	flex-shrink: 0;
}

.fu-proof-card__image {
	width: clamp(2.5rem, 5vw, 2.75rem);
	height: clamp(2.5rem, 5vw, 2.75rem);
	border-radius: 0.625rem;
	object-fit: cover;
	display: block;
	background: var(--pc-source-image-bg);
	border: 1px solid var(--pc-source-image-border);
}

.fu-proof-card__source-text {
	display: flex;
	flex-direction: column;
	gap: 0.125rem;
	min-width: 0;
}

.fu-proof-card__source-name {
	font-size: 0.875rem;
	font-weight: 700;
	color: var(--pc-source-name);
	margin: 0;
	line-height: 1.25;
}

.fu-proof-card__source-detail {
	font-size: 0.78125rem;
	color: var(--pc-source-detail);
	margin: 0;
	line-height: 1.35;
}

/* --------------------------------------------------------------------------
   Card link
   -------------------------------------------------------------------------- */

.fu-proof-card__link {
	display: inline-block;
	font-size: 0.875rem;
	font-weight: 600;
	color: var(--pc-link-color);
	text-decoration: underline;
	text-underline-offset: 3px;
	margin-top: auto;
}

.fu-proof-card__link:hover {
	text-decoration-thickness: 2px;
}

.fu-proof-card__link:focus-visible {
	outline: 2px solid var(--pc-focus-ring);
	outline-offset: 3px;
	border-radius: var(--fu-radius-sm);
}

/* --------------------------------------------------------------------------
   Empty state notice — shown in editor when no cards have been added yet
   -------------------------------------------------------------------------- */

.fu-proof-cards__empty-notice {
	grid-column: 1 / -1;
	text-align: center;
	padding: var(--fu-space-lg);
	color: var(--pc-color-empty-text);
	font-size: 0.9375rem;
	border: 2px dashed var(--pc-color-empty-border);
	border-radius: var(--fu-radius-md);
	margin: 0;
}

/* --------------------------------------------------------------------------
   Editor parity
   -------------------------------------------------------------------------- */

.editor-styles-wrapper .wp-block-acf-fu-proof-cards,
.acf-block-component .wp-block-acf-fu-proof-cards {
	max-width: 100%;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
	.fu-proof-card {
		transition: none;
	}
}