/*
 * BK Marine header, navigation and search controls.
 *
 * This module owns the persistent public navigation shell only. Responsive
 * overrides remain in responsive.css so breakpoint behavior stays centralized
 * and the cascade order remains explicit for future maintainers.
 */

/* Sticky bilingual navigation and expandable search controls. */
.bk-header {
	position: sticky;
	top: var(--wp-admin--admin-bar--height, 0px);
	z-index: 1000;
	background: var(--bk-white);
	box-shadow: 0 6px 28px rgba(18, 33, 47, .1);
}

.bk-header__brand-row {
	position: relative;
	background: var(--bk-navy);
	border-bottom: 4px solid var(--bk-magenta);
}

.bk-header__brand-inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	min-height: 104px;
}

.bk-header__logo {
	display: inline-flex;
	align-items: center;
}

.bk-header__logo img {
	width: min(350px, 44vw);
	height: auto;
}

.bk-header__tools {
	display: flex;
	align-items: center;
	gap: clamp(.4rem, .7vw, .65rem);
}

.bk-language,
.bk-search-toggle,
.bk-menu-toggle {
	display: inline-grid;
	place-items: center;
	width: 42px;
	height: 42px;
	padding: 0;
	border: 1px solid rgba(255, 255, 255, .26);
	border-radius: var(--bk-radius-sm);
	background: rgba(255, 255, 255, .05);
	color: var(--bk-white) !important;
	line-height: 1;
	text-decoration: none;
	transition: background var(--bk-transition), border-color var(--bk-transition), box-shadow var(--bk-transition), transform var(--bk-transition);
}

.bk-language {
	grid-auto-flow: column;
	width: auto;
	min-width: 64px;
	padding-inline: .6rem;
	gap: .35rem;
	font-family: var(--bk-font-display);
	font-size: .88rem;
	font-weight: 700;
}

.bk-language__flag {
	font-family: system-ui, sans-serif;
	font-size: 1rem;
	line-height: 1;
}

.bk-language:hover,
.bk-search-toggle:hover,
.bk-menu-toggle:hover,
.bk-language:focus-visible,
.bk-search-toggle:focus-visible,
.bk-menu-toggle:focus-visible {
	background: rgba(255, 255, 255, .14);
	border-color: rgba(255, 255, 255, .6);
	transform: translateY(-1px);
}

.bk-search-toggle svg {
	fill: none;
	stroke: currentColor;
	stroke-linecap: round;
	stroke-width: 1.8;
}

.bk-menu-toggle {
	display: none;
	grid-template-rows: repeat(3, 2px);
	place-content: center;
	gap: 4px;
	padding: 0 10px;
}

.bk-menu-toggle > span:not(.screen-reader-text) {
	display: block;
	width: 20px;
	height: 2px;
	background: currentColor;
}

.bk-nav-row {
	position: relative;
	background: rgba(255, 255, 255, .98);
}

.bk-nav-row__inner {
	position: relative;
}

.bk-primary-nav {
	display: flex;
	align-items: stretch;
	justify-content: center;
	gap: clamp(.1rem, .55vw, .65rem);
}

/* Keep every navigation label centered while fluid sizing protects intermediate widths. */
.bk-primary-nav a {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: center;
	min-width: 0;
	min-height: clamp(46px, 3.75vw, 50px);
	padding: .55rem clamp(.32rem, .55vw, .62rem);
	color: var(--bk-navy) !important;
	font-size: clamp(.86rem, .24vw + .78rem, .92rem);
	line-height: 1.2;
	letter-spacing: .01em;
	text-align: center;
	text-decoration: none;
	white-space: nowrap;
	transition: color var(--bk-transition), background var(--bk-transition), box-shadow var(--bk-transition), transform var(--bk-transition);
}

.bk-primary-nav a:hover,
.bk-primary-nav a:focus-visible {
	background: linear-gradient(180deg, rgba(228, 0, 69, .055), rgba(228, 0, 69, .012));
	box-shadow: inset 0 -1px 0 rgba(228, 0, 69, .08);
	color: var(--bk-magenta) !important;
	transform: translateY(-1px);
}

.bk-primary-nav a.is-current,
.bk-primary-nav a[aria-current="page"] {
	background: linear-gradient(180deg, rgba(228, 0, 69, .045), transparent);
	color: var(--bk-magenta) !important;
	font-weight: 700;
}

.bk-primary-nav a::after {
	position: absolute;
	left: .5rem;
	right: .5rem;
	bottom: 0;
	height: 3px;
	content: '';
	background: var(--bk-magenta);
	transform: scaleX(0);
	transform-origin: center;
	transition: transform var(--bk-transition);
}

.bk-primary-nav a:hover::after,
.bk-primary-nav a:focus-visible::after,
.bk-primary-nav a.is-current::after,
.bk-primary-nav a[aria-current="page"]::after {
	transform: scaleX(1);
}

.bk-search-form {
	position: absolute;
	top: calc(100% + 10px);
	right: 0;
	display: flex;
	z-index: 10;
	width: min(360px, calc(100vw - 32px));
	padding: .65rem;
	background: var(--bk-white);
	border: 1px solid var(--bk-line);
	border-radius: var(--bk-radius-md);
	box-shadow: var(--bk-shadow);
	opacity: 0;
	visibility: hidden;
	transform: translateY(-8px);
	transition: opacity var(--bk-transition), transform var(--bk-transition), visibility var(--bk-transition);
}

.bk-search-form.is-open {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}

.bk-search-form input {
	flex: 1;
	min-width: 0;
	border: 1px solid var(--bk-line);
	border-radius: var(--bk-radius-sm) 0 0 var(--bk-radius-sm);
	padding: .72rem .9rem;
	font: inherit;
}

.bk-search-form button {
	border: 0;
	border-radius: 0 var(--bk-radius-sm) var(--bk-radius-sm) 0;
	background: var(--bk-magenta);
	color: var(--bk-white);
	padding: .72rem 1rem;
	font-weight: 700;
	cursor: pointer;
	transition: background var(--bk-transition), box-shadow var(--bk-transition);
}

.bk-search-form button:hover,
.bk-search-form button:focus-visible {
	background: var(--bk-navy);
	box-shadow: var(--bk-shadow-xs);
}