/**
 * Three Content Box section styles.
 *
 * Two approved card treatments:
 * - Figma 2267:12157 — grey joined cards, navy filled CTA (--cards-grey, default)
 * - Figma 2267:10730 — navy outlined cards, rule under title, no CTA (--cards-navy)
 */

.three-content-box {
	--tcb-pad-block: 3.75rem; /* 60px */
	--tcb-stack-gap: 3.125rem; /* 50px header ↔ grid */
	--tcb-grid-gap: 0.1875rem; /* 3px */
	--tcb-headline-size: var(--type-h2-size);
	--tcb-headline-line: 1.1;
	--tcb-headline-max: calc(67.4375rem * var(--container-content-scale)); /* 1079px */
	--tcb-card-radius: 0.25rem; /* 4px inner */
	--tcb-card-radius-outer: 1rem; /* 16px cluster ends */
	--tcb-card-pad-block: clamp(1.75rem, 4vw, 3rem); /* → 48px */
	--tcb-card-pad-inline: clamp(1.25rem, 3vw, 3rem); /* → 48px */
	--tcb-card-min-h: 0;
	--tcb-card-align: center;
	--tcb-card-gap: 2.25rem; /* 36px copy ↔ CTA */
	--tcb-copy-gap: 1.125rem; /* 18px title ↔ description */
	--tcb-title-size: 1.375rem; /* 22px */
	--tcb-title-rule-space: 0;
	--tcb-description-opacity: 0.75;
	--tcb-ease: cubic-bezier(0.22, 1, 0.36, 1);
	--tcb-cols: 3;
	--tcb-section-bg: var(--color-white);
	--tcb-section-text: var(--color-navy);
	--tcb-divider: var(--color-light-outline);
	--tcb-card-bg: var(--color-deck);
	--tcb-card-text: var(--color-navy);
	--tcb-card-border: transparent;
	--tcb-card-divider: transparent;
	--tcb-headline-align: center;

	padding-block: var(--tcb-pad-block);
	color: var(--tcb-section-text);
	background-color: var(--tcb-section-bg);
}

.three-content-box--cards-navy {
	--tcb-stack-gap: 2rem; /* 32px */
	--tcb-grid-gap: 1.5rem; /* 24px */
	--tcb-headline-size: var(--type-h2-lg-size);
	--tcb-headline-line: 1.4727; /* 64.8 / 44 */
	--tcb-headline-max: calc(48.875rem * var(--container-content-scale)); /* 782px */
	--tcb-card-radius: 0.75rem; /* 12px */
	--tcb-card-radius-outer: 0.75rem;
	--tcb-card-pad-block: clamp(1.75rem, 4vw, 3.75rem); /* → 60px */
	--tcb-card-pad-inline: clamp(1.25rem, 3vw, 2.5rem); /* → 40px */
	--tcb-card-min-h: 15.75rem; /* 252px */
	--tcb-card-align: flex-start;
	--tcb-card-gap: 2rem; /* 32px */
	--tcb-copy-gap: 2rem; /* 32px */
	--tcb-title-rule-space: 2rem; /* 32px */
	--tcb-description-opacity: 1;
	--tcb-divider: var(--color-navy);
	--tcb-card-bg: var(--color-navy);
	--tcb-card-text: var(--color-white);
	--tcb-card-border: var(--color-white);
	--tcb-card-divider: var(--color-light-outline);
}

.three-content-box--bg-light {
	--tcb-section-bg: var(--color-deck);
	--tcb-card-bg: var(--color-white);
}

.three-content-box--bg-navy {
	--tcb-section-bg: var(--color-navy);
	--tcb-section-text: var(--color-white);
	--tcb-divider: var(--color-light-outline);
}

.three-content-box--cols-2 {
	--tcb-cols: 2;
}

.three-content-box--cols-4 {
	--tcb-cols: 4;
}

.three-content-box--align-left {
	--tcb-headline-align: left;
}

.three-content-box--align-right {
	--tcb-headline-align: right;
}

.three-content-box__inner {
	display: flex;
	flex-direction: column;
	gap: var(--tcb-stack-gap);
	width: 100%;
	max-width: var(--container-outer-max);
	margin-inline: auto;
	padding-inline: var(--container-pad-inline);
	box-sizing: border-box;
}

.three-content-box__header {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 100%;
	box-sizing: border-box;
}

.three-content-box--align-left .three-content-box__header {
	justify-content: flex-start;
}

.three-content-box--align-right .three-content-box__header {
	justify-content: flex-end;
}

.three-content-box--has-divider .three-content-box__header {
	padding-block-end: 22px;
	border-bottom: 0.03125rem solid var(--tcb-divider);
}

.three-content-box__headline {
	margin: 0;
	width: 100%;
	max-width: var(--tcb-headline-max);
	font-family: var(--font-family-display);
	font-size: var(--tcb-headline-size);
	font-weight: 400;
	line-height: var(--tcb-headline-line);
	letter-spacing: -0.01em;
	text-align: var(--tcb-headline-align);
	color: var(--tcb-section-text);
	overflow-wrap: break-word;
}

.three-content-box__grid {
	display: grid;
	grid-template-columns: minmax(0, 1fr);
	gap: var(--tcb-grid-gap);
	margin: 0;
	padding: 0;
	list-style: none;
}

.three-content-box__item {
	display: flex;
	flex-direction: column;
	align-items: var(--tcb-card-align);
	justify-content: flex-start;
	gap: var(--tcb-card-gap);
	min-width: 0;
	max-width: 100%;
	padding: var(--tcb-card-pad-block) var(--tcb-card-pad-inline);
	color: var(--tcb-card-text);
	background-color: var(--tcb-card-bg);
	border: 0.03125rem solid var(--tcb-card-border);
	border-radius: var(--tcb-card-radius);
	box-sizing: border-box;
}

.three-content-box__item:first-child {
	border-start-start-radius: var(--tcb-card-radius-outer);
	border-start-end-radius: var(--tcb-card-radius-outer);
}

.three-content-box__item:last-child {
	border-end-start-radius: var(--tcb-card-radius-outer);
	border-end-end-radius: var(--tcb-card-radius-outer);
}

.three-content-box__copy {
	display: flex;
	flex-direction: column;
	gap: var(--tcb-copy-gap);
	width: 100%;
	min-width: 0;
}

.three-content-box__title {
	margin: 0;
	padding-block-end: var(--tcb-title-rule-space);
	font-family: var(--font-family-display);
	font-size: var(--tcb-title-size);
	font-weight: 400;
	line-height: 1.1;
	letter-spacing: -0.01em;
	color: var(--tcb-card-text);
	border-bottom: 0.03125rem solid var(--tcb-card-divider);
	overflow-wrap: break-word;
}

.three-content-box__description {
	margin: 0;
	font-family: var(--font-family-sans);
	font-size: 1rem;
	font-weight: 400;
	line-height: 1.5;
	color: var(--tcb-card-text);
	opacity: var(--tcb-description-opacity);
	overflow-wrap: break-word;
}

.three-content-box__cta {
	/* Figma "CTA Dark": 16px regular, 48px tall, 30px radius, 32px icon. */
	--btn-navy-font-size: 1rem;
	--btn-navy-font-weight: 400;
	--btn-navy-letter-spacing: 0.02em;
	--btn-navy-line-height: 1.2375;
	--btn-navy-min-height: 3rem;
	--btn-navy-padding-block: 0.4375rem;
	--btn-navy-padding-inline: 1.5rem;
	--btn-navy-gap: 1.25rem;
	--btn-navy-icon-size: 2rem;
	--btn-navy-border-radius: 1.875rem;
	flex-shrink: 0;
	width: 100%;
	max-width: 100%;
	margin-top: auto;
}

.three-content-box__cta-label {
	white-space: normal;
	text-align: center;
}

/* Outline CTA sits on a grey card — flip to navy ink so it stays legible. */
.three-content-box--cards-grey .three-content-box__cta.btn--outline {
	--btn-outline-text: var(--color-navy);
	--btn-outline-border: var(--color-navy);
	--btn-outline-text-hover: var(--color-navy);
	--btn-outline-border-hover: var(--color-navy);
	--btn-outline-text-focus: var(--color-navy);
	--btn-outline-text-active: var(--color-navy);
	--btn-outline-bg-hover: rgba(0, 50, 70, 0.08);
	--btn-outline-bg-active: rgba(0, 50, 70, 0.12);
}

@media (min-width: 40rem) {
	.three-content-box__grid {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	/* Cards sit side by side — round the outer edges of the row, not the stack. */
	.three-content-box__item:first-child {
		border-radius: var(--tcb-card-radius-outer) var(--tcb-card-radius) var(--tcb-card-radius) var(--tcb-card-radius-outer);
	}

	.three-content-box__item:last-child {
		border-radius: var(--tcb-card-radius) var(--tcb-card-radius-outer) var(--tcb-card-radius-outer) var(--tcb-card-radius);
	}

	.three-content-box__cta {
		width: max-content;
	}
}

@media (min-width: 64rem) {
	.three-content-box__grid {
		grid-template-columns: repeat(var(--tcb-cols), minmax(0, 1fr));
	}

	.three-content-box__item {
		min-height: var(--tcb-card-min-h);
	}

	.three-content-box--cols-4 .three-content-box__item {
		--tcb-card-pad-inline: clamp(1.25rem, 2vw, 1.75rem);
	}

	.three-content-box__cta-label {
		white-space: nowrap;
	}
}

@media (prefers-reduced-motion: no-preference) {
	.three-content-box__header,
	.three-content-box__item {
		opacity: 0;
		transition:
			opacity 0.85s var(--tcb-ease),
			transform 0.85s var(--tcb-ease);
		will-change: opacity, transform;
	}

	.three-content-box__header {
		transform: translateY(-2.25rem);
	}

	.three-content-box__item {
		transform: translateY(2.5rem);
	}

	.three-content-box__item:nth-child(1) {
		transition-delay: 0.08s;
	}

	.three-content-box__item:nth-child(2) {
		transition-delay: 0.2s;
	}

	.three-content-box__item:nth-child(3) {
		transition-delay: 0.32s;
	}

	/* Any extra cards past the designed three share the last delay step. */
	.three-content-box__item:nth-child(n + 4) {
		transition-delay: 0.44s;
	}

	.three-content-box.is-inview .three-content-box__header,
	.three-content-box.is-inview .three-content-box__item {
		opacity: 1;
		transform: translateY(0);
		will-change: auto;
	}
}