/*
 * BK Marine homepage and shared content components.
 *
 * Hero motion, primary buttons, editorial sections, engine cards, service rows
 * and workshop imagery are grouped here because they form the homepage visual
 * system. Responsive overrides are centralized separately in responsive.css.
 */

/* Homepage hero slider with stable dimensions to minimize layout shift. */
.bk-hero {
	position: relative;
	padding: clamp(2rem, 5vw, 4.5rem) 0;
	background:
		radial-gradient(circle at 14% 10%, rgba(32, 152, 209, .06), transparent 32%),
		linear-gradient(180deg, #f7f8f9 0%, var(--bk-white) 100%);
}

.bk-hero__frame {
	--bk-hero-image-height: clamp(360px, 35vw, 480px);
	position: relative;
	overflow: hidden;
	min-height: clamp(520px, 48vw, 650px);
	border: 1px solid var(--bk-image-border);
	border-radius: var(--bk-image-radius-lg);
	background: var(--bk-white);
	box-shadow: var(--bk-image-shadow-md);
}

/* Paint the gray stage once on the stationary shell, outside the animated slides. */
.bk-hero__frame::before {
	content: '';
	position: absolute;
	inset: 0 0 auto;
	height: var(--bk-hero-image-height);
	background: var(--bk-soft);
	pointer-events: none;
}

.bk-hero__slides,
.bk-hero__slide {
	min-height: inherit;
}

.bk-hero__slide {
	position: absolute;
	inset: 0;
	opacity: 0;
	visibility: hidden;
	pointer-events: none;
}

.bk-hero__slide.is-active {
	position: relative;
	opacity: 1;
	visibility: visible;
	pointer-events: auto;
	z-index: 1;
}

/*
 * Keep the carousel shell and content panel anchored while only the product
 * artwork travels horizontally. Parent states coordinate stacking and input;
 * motion is intentionally delegated to the image layer below.
 */
.bk-hero__slide.is-entering,
.bk-hero__slide.is-leaving {
	opacity: 1;
	visibility: visible;
	pointer-events: none;
}

.bk-hero__slide.is-entering {
	position: relative;
	z-index: 2;
}

.bk-hero__slide.is-leaving {
	position: absolute;
	z-index: 1;
}

.bk-hero__slide.is-entering .bk-hero__image-link img {
	transform: translateX(105%);
}

.bk-hero__slide.is-entering.is-backward .bk-hero__image-link img {
	transform: translateX(-105%);
}

.bk-hero__slide.is-leaving .bk-hero__image-link img {
	transform: translateX(0);
}

.bk-hero__slide.is-entering.is-moving .bk-hero__image-link img {
	transform: translateX(0);
	transition: transform 820ms cubic-bezier(.22, .61, .36, 1) 420ms;
}

.bk-hero__slide.is-leaving.is-forward.is-moving .bk-hero__image-link img {
	transform: translateX(-105%);
}

.bk-hero__slide.is-leaving.is-backward.is-moving .bk-hero__image-link img {
	transform: translateX(105%);
}

.bk-hero__slide.is-leaving.is-moving .bk-hero__image-link img {
	transition: transform 1100ms cubic-bezier(.45, 0, .2, 1);
}

.bk-hero__image-link {
	display: block;
	height: var(--bk-hero-image-height);
	padding: clamp(.75rem, 1.5vw, 1.35rem);
	overflow: hidden;
	background: transparent;
}

/* Only artwork moves; the link, gray stage and captions remain anchored. */
.bk-hero__image-link img {
	will-change: transform;
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: center;
	border-radius: var(--bk-image-radius-md);
}

.bk-hero__content {
	position: absolute;
	left: 2rem;
	right: 2rem;
	bottom: 1.5rem;
	display: grid;
	grid-template-columns: 1fr auto;
	align-items: end;
	gap: .35rem 2rem;
	padding: 1.55rem 1.75rem;
	border-left: 4px solid var(--bk-magenta);
	background: rgba(48, 60, 73, .96);
	border-radius: 0 var(--bk-radius-md) var(--bk-radius-md) 0;
	color: var(--bk-white);
	box-shadow: 0 14px 36px rgba(20, 31, 42, .2);
	transform: none;
	will-change: opacity;
}

/* Product copy changes locally through a cross-fade and never follows the image track. */
.bk-hero__slide.is-entering .bk-hero__content { opacity: 0; }
.bk-hero__slide.is-leaving .bk-hero__content { opacity: 1; }
.bk-hero__slide.is-entering.is-moving .bk-hero__content {
	opacity: 1;
	transition: opacity 360ms ease 700ms;
}
.bk-hero__slide.is-leaving.is-moving .bk-hero__content {
	opacity: 0;
	transition: opacity 360ms ease 700ms;
}

.bk-hero__content h2 {
	grid-column: 1;
	font-size: clamp(1.65rem, 3vw, 2.6rem);
}

.bk-hero__eyebrow,
.bk-kicker {
	margin: 0;
	color: var(--bk-magenta);
	font-family: var(--bk-font-display);
	font-size: .76rem;
	font-weight: 700;
	letter-spacing: .16em;
}

.bk-hero__eyebrow {
	grid-column: 1;
	color: #f58cac;
}

.bk-button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: .55rem;
	min-height: 48px;
	padding: .75rem 1.25rem;
	border: 1px solid transparent;
	border-radius: var(--bk-radius-sm);
	background: var(--bk-navy);
	box-shadow: var(--bk-shadow-sm);
	color: var(--bk-white) !important;
	cursor: pointer;
	font-family: var(--bk-font-display);
	font-weight: 700;
	text-decoration: none;
	transition: color var(--bk-transition), background var(--bk-transition), border-color var(--bk-transition), box-shadow var(--bk-transition), transform var(--bk-transition);
}

.bk-button:hover,
.bk-button:focus-visible {
	background: var(--bk-navy-deep);
	box-shadow: var(--bk-shadow);
	transform: translateY(-2px);
}

.bk-button:active {
	box-shadow: var(--bk-shadow-sm);
	transform: translateY(0);
}

.bk-button--light {
	grid-column: 2;
	grid-row: 1 / 3;
	align-self: center;
	border-color: rgba(255, 255, 255, .45);
	background: transparent;
	box-shadow: none;
	color: var(--bk-white) !important;
}

.bk-button--light:hover,
.bk-button--light:focus-visible {
	background: var(--bk-white);
	color: var(--bk-navy) !important;
	box-shadow: var(--bk-shadow-sm);
}

.bk-button--outline {
	border-color: rgba(48, 60, 73, .22);
	background: var(--bk-white);
	box-shadow: var(--bk-shadow-xs);
	color: var(--bk-navy) !important;
}

.bk-button--outline:hover,
.bk-button--outline:focus-visible {
	border-color: rgba(228, 0, 69, .28);
	background: var(--bk-white);
	box-shadow: var(--bk-shadow-sm);
	color: var(--bk-magenta) !important;
}

.bk-hero__control {
	position: absolute;
	top: 44%;
	z-index: 5;
	display: grid;
	place-items: center;
	width: 48px;
	height: 48px;
	border: 1px solid var(--bk-line);
	border-radius: 50%;
	background: rgba(255, 255, 255, .94);
	color: var(--bk-navy);
	font-size: 2rem;
	line-height: 1;
	box-shadow: var(--bk-shadow-sm);
	cursor: pointer;
	transition: background var(--bk-transition), color var(--bk-transition), transform var(--bk-transition);
}

.bk-hero__control:hover,
.bk-hero__control:focus-visible {
	background: var(--bk-navy);
	color: var(--bk-white);
	transform: scale(1.04);
}

.bk-hero__control--prev { left: 1rem; }
.bk-hero__control--next { right: 1rem; }

.bk-hero__dots {
	position: absolute;
	left: 50%;
	bottom: .65rem;
	z-index: 6;
	display: flex;
	gap: .5rem;
	transform: translateX(-50%);
}

.bk-hero__dots button {
	width: 9px;
	height: 9px;
	padding: 0;
	border: 0;
	border-radius: 50%;
	background: #b6bcc2;
	cursor: pointer;
	transition: width var(--bk-transition), border-radius var(--bk-transition), background var(--bk-transition);
}

.bk-hero__dots button[aria-selected="true"] {
	width: 28px;
	border-radius: 99px;
	background: var(--bk-magenta);
}

.bk-section {
	padding: clamp(4rem, 8vw, 7rem) 0;
}

.bk-section--muted {
	background: var(--bk-soft);
}

.bk-intro__grid {
	display: grid;
	grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
	gap: clamp(2.5rem, 7vw, 6rem);
	align-items: start;
}

.bk-intro h1 {
	position: relative;
	padding-top: 1rem;
	color: var(--bk-navy);
}

.bk-prose { max-width: 68ch; }
.bk-prose p { margin: 0 0 1.2rem; }
.bk-prose strong {
	color: var(--bk-navy);
	font-weight: 700;
}

.bk-section-heading {
	display: grid;
	gap: .75rem;
	margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

/* Size each accent to its authored heading rather than a fixed decorative width. */
.bk-section-heading h2 {
	width: fit-content;
	max-width: 100%;
	color: var(--bk-navy);
}

.bk-section-heading h2::after {
	display: block;
	width: 100%;
	height: 4px;
	margin-top: 1rem;
	border-radius: 999px;
	content: '';
	background: var(--bk-magenta);
}

.bk-engine-grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 1.5rem;
}

.bk-engine-card {
	display: flex;
	flex-direction: column;
	overflow: hidden;
	min-width: 0;
	border: 1px solid var(--bk-image-border);
	border-radius: var(--bk-image-radius-md);
	background: var(--bk-white);
	box-shadow: var(--bk-media-shadow);
	transition: transform var(--bk-transition), box-shadow var(--bk-transition), border-color var(--bk-transition);
}

@media (hover: hover) and (pointer: fine) {
	.bk-engine-card:hover {
		transform: translateY(-2px);
		border-color: rgba(48, 60, 73, .2);
		box-shadow: var(--bk-media-shadow-hover);
	}
}

.bk-engine-card__image {
	display: grid;
	place-items: center;
	overflow: hidden;
	aspect-ratio: 4 / 3;
	padding: clamp(.75rem, 1.4vw, 1.1rem);
	background: var(--bk-image-surface-raised);
}

.bk-engine-card__image img {
	width: 100%;
	height: 100%;
	padding: .3rem;
	border: 1px solid var(--bk-image-canvas-border);
	border-radius: calc(var(--bk-image-radius-md) - 4px);
	background: var(--bk-white);
	box-shadow: var(--bk-image-canvas-shadow);
	object-fit: contain;
	object-position: center;
	transition: transform var(--bk-transition), box-shadow var(--bk-transition);
}

@media (hover: hover) and (pointer: fine) {
	.bk-engine-card:hover .bk-engine-card__image img { transform: scale(1.012); }
}

.bk-engine-card__body {
	display: flex;
	flex: 1;
	flex-direction: column;
	padding: 1.5rem;
}

.bk-engine-card h3 {
	margin: 0 0 .8rem;
	color: var(--bk-navy);
}

.bk-engine-card h3 a { text-decoration: none; }

.bk-engine-card p {
	display: -webkit-box;
	overflow: hidden;
	margin: 0 0 1.25rem;
	color: var(--bk-muted);
	font-size: .96rem;
	-webkit-box-orient: vertical;
	-webkit-line-clamp: 4;
}

.bk-text-link {
	display: inline-flex;
	align-items: center;
	gap: .5rem;
	margin-top: auto;
	color: var(--bk-navy) !important;
	font-family: var(--bk-font-display);
	font-weight: 700;
	text-decoration-color: var(--bk-magenta);
	text-underline-offset: .3em;
}

.bk-text-link span { transition: transform var(--bk-transition); }
.bk-text-link:hover span,
.bk-text-link:focus-visible span { transform: translateX(4px); }

.bk-services {
	overflow: clip;
}

.bk-services__list {
	border-top: 1px solid var(--bk-line);
}

/*
 * Homepage service rows use one reusable visual and motion system.
 * Every current or future .bk-service-row inherits the same treatment.
 */
.bk-services__list.is-motion-enabled .bk-service-row {
	--bk-service-reveal-x: 48px;
	--bk-service-reveal-y: 0px;
}

.bk-services__list.is-motion-enabled .bk-service-row__number,
.bk-services__list.is-motion-enabled .bk-service-row__copy {
	transition:
		opacity 520ms ease,
		transform 680ms cubic-bezier(.22, .61, .36, 1);
}

.bk-services__list.is-motion-enabled .bk-service-row__copy {
	transition-delay: 55ms;
}

.bk-services__list.is-motion-enabled .bk-service-row__image {
	transition:
		opacity 520ms ease,
		transform 680ms cubic-bezier(.22, .61, .36, 1),
		border-color var(--bk-transition),
		box-shadow var(--bk-transition);
	transition-delay: 95ms, 95ms, 0ms, 0ms;
}

.bk-services__list.is-motion-enabled .bk-service-row:not(.is-revealed) .bk-service-row__number,
.bk-services__list.is-motion-enabled .bk-service-row:not(.is-revealed) .bk-service-row__copy {
	opacity: 0;
	transform: translate3d(calc(var(--bk-service-reveal-x) * -1), var(--bk-service-reveal-y), 0);
}

.bk-services__list.is-motion-enabled .bk-service-row:not(.is-revealed) .bk-service-row__image {
	opacity: 0;
	transform: translate3d(var(--bk-service-reveal-x), var(--bk-service-reveal-y), 0);
}

.bk-service-row {
	display: grid;
	grid-template-columns: 68px minmax(0, 1fr) minmax(280px, 38%);
	gap: clamp(1.5rem, 4vw, 3.5rem);
	align-items: stretch;
	padding: clamp(2rem, 4vw, 3rem) 0;
	border-bottom: 1px solid var(--bk-line);
}

/* Shared service indices use a restrained badge treatment for faster scanning. */
.bk-service-row__number {
	display: inline-grid;
	place-items: center;
	align-self: start;
	width: 44px;
	aspect-ratio: 1;
	border: 1px solid rgba(228, 0, 69, .3);
	border-radius: 50%;
	background: var(--bk-white);
	box-shadow: var(--bk-shadow-xs);
	color: var(--bk-navy);
	font-family: var(--bk-font-display);
	font-size: .88rem;
	font-weight: 700;
	line-height: 1;
	letter-spacing: .04em;
}

/*
 * Editorial copy panel: the corner accents reinforce the BK Marine brand without
 * turning the panel into a heavy card. The selector is structural, so new service
 * rows inherit the treatment automatically.
 */
.bk-service-row__copy {
	position: relative;
	align-self: center;
	overflow: hidden;
	padding: clamp(1.15rem, 2.4vw, 1.9rem);
	border: 1px solid rgba(48, 60, 73, .13);
	border-radius: var(--bk-radius-md);
	background: linear-gradient(
		180deg,
		rgba(255, 255, 255, .98) 0%,
		rgba(247, 249, 250, .98) 100%
	);
	box-shadow:
		0 8px 24px rgba(24, 38, 52, .06),
		0 2px 6px rgba(24, 38, 52, .035);
}

.bk-service-row__copy::before,
.bk-service-row__copy::after {
	content: '';
	position: absolute;
	height: 3px;
	background: linear-gradient(90deg, var(--bk-magenta), var(--bk-red));
	pointer-events: none;
}

.bk-service-row__copy::before {
	top: 0;
	left: 0;
	width: clamp(64px, 10vw, 92px);
	border-radius: 0 0 3px 0;
}

.bk-service-row__copy::after {
	right: 0;
	bottom: 0;
	width: clamp(52px, 8vw, 76px);
	border-radius: 3px 0 0 0;
}

.bk-service-row__copy h3 {
	margin: 0 0 .75rem;
	color: var(--bk-navy);
}

.bk-service-row__copy p {
	margin: 0;
	color: var(--bk-muted);
	line-height: 1.75;
}

/* Framed photography stays visually distinct from the white homepage surface. */
.bk-service-row__image {
	justify-self: center;
	width: min(100%, 700px);
	overflow: hidden;
	aspect-ratio: 4 / 3;
	padding: clamp(.6rem, 1.25vw, .95rem);
	border: 1px solid rgba(48, 60, 73, .18);
	border-radius: calc(var(--bk-image-radius-md) + 2px);
	background: linear-gradient(
		145deg,
		rgba(255, 255, 255, 1) 0%,
		rgba(236, 240, 243, .98) 100%
	);
	box-shadow:
		0 18px 42px rgba(24, 38, 52, .13),
		0 6px 16px rgba(24, 38, 52, .07),
		0 1px 2px rgba(24, 38, 52, .05);
	transition:
		border-color var(--bk-transition),
		box-shadow var(--bk-transition),
		transform var(--bk-transition);
}

.bk-service-row__image img {
	display: block;
	width: 100%;
	height: 100%;
	border-radius: calc(var(--bk-image-radius-md) - 2px);
	object-fit: cover;
	object-position: center;
	transition: transform var(--bk-transition);
}

@media (hover: hover) and (pointer: fine) {
	.bk-service-row__image:hover {
		border-color: rgba(48, 60, 73, .22);
		box-shadow:
			0 22px 48px rgba(24, 38, 52, .15),
			0 8px 18px rgba(24, 38, 52, .08),
			0 1px 2px rgba(24, 38, 52, .05);
	}

	.bk-service-row__image:hover img {
		transform: scale(1.014);
	}
}

.bk-overhaul {
	background: var(--bk-navy);
	color: var(--bk-white);
}

.bk-section-heading--light h2 { color: var(--bk-white); }

.bk-overhaul__grid {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: 1rem;
}

.bk-overhaul__item {
	position: relative;
	overflow: hidden;
	aspect-ratio: 4 / 3;
	border: 1px solid rgba(255, 255, 255, .08);
	border-radius: var(--bk-image-radius-md);
	background: var(--bk-navy-deep);
	box-shadow: 0 10px 28px rgba(13, 24, 34, .18);
	color: var(--bk-white) !important;
	text-decoration: none;
}

.bk-overhaul__item::after {
	position: absolute;
	inset: 0;
	content: '';
	background: linear-gradient(180deg, transparent 45%, rgba(24, 35, 46, .84));
}

.bk-overhaul__item img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: center;
	transition: transform var(--bk-transition);
}

.bk-overhaul__item span {
	position: absolute;
	left: 1rem;
	right: 1rem;
	bottom: .85rem;
	z-index: 2;
	font-family: var(--bk-font-display);
	font-weight: 700;
}

@media (hover: hover) and (pointer: fine) {
	.bk-overhaul__item:hover img,
	.bk-overhaul__item:focus-visible img { transform: scale(1.015); }
}