/* ==========================================================================
   envitron 2026 — header.css
   Site-Header, Primary-Nav, Sprachschalter, Mobile-Drawer.

   Erwartet Tokens aus main.css (:root). Verhalten:
   - sticky top, deckend weiss (kein durchscheinender Backdrop)
   - hide-on-scroll-down, show-on-scroll-up (via [data-hidden])
   - Mobile: Full-Height-Drawer von rechts mit Backdrop + Scroll-Lock
   ========================================================================== */

/* ------------------------------------------------------------- 1. Shell */
.site-header {
	position: sticky;
	top: 0;
	z-index: 100;
	background: var(--white);
	border-bottom: 1px solid transparent;
	transition:
		transform var(--transition-med),
		border-color var(--transition-fast),
		box-shadow var(--transition-fast);
	will-change: transform;
}
.site-header[data-sticky].is-stuck {
	border-bottom-color: rgba(42, 49, 66, 0.08);
	box-shadow: 0 1px 0 rgba(42, 49, 66, 0.04), 0 8px 24px -16px rgba(42, 49, 66, 0.18);
}
.site-header[data-hidden="true"] {
	transform: translateY(-100%);
}
@media (prefers-reduced-motion: reduce) {
	.site-header[data-hidden="true"] { transform: none; }
}

.site-header__inner {
	max-width: var(--wide-width);
	margin-inline: auto;
	padding-inline: var(--gutter);
	min-height: var(--header-height);
	display: flex;
	align-items: center;
	gap: var(--space-5);
}

/* ------------------------------------------------------------- 2. Brand / Logo */
.site-header__brand { flex: 0 0 auto; display: flex; align-items: center; }
.site-header__brand .custom-logo-link {
	display: inline-flex;
	align-items: center;
	border-radius: var(--radius-sm);
	transition: opacity var(--transition-fast);
}
.site-header__brand .custom-logo-link:hover { opacity: 0.82; }
.site-header__brand .custom-logo {
	max-height: 52px;
	width: auto;
}
.site-header__home-link {
	text-decoration: none;
	color: var(--ink-900);
	display: inline-flex;
	align-items: center;
	font-weight: 700;
	font-size: 1.125rem;
	letter-spacing: -0.005em;
}

/* ------------------------------------------------------------- 3. Nav (Desktop) */
.site-header__nav {
	margin-left: auto;
	display: flex;
	align-items: center;
	gap: clamp(var(--space-4), 2vw, var(--space-6));
}

.nav.nav--primary {
	display: flex;
	align-items: stretch;
	gap: clamp(0.15rem, 0.5vw, 0.5rem);
	list-style: none;
	padding: 0;
	margin: 0;
}
.nav__item {
	margin: 0;
	position: relative;
	display: flex;
	align-items: stretch;
}

.nav__link {
	position: relative;
	display: inline-flex;
	align-items: center;
	gap: var(--space-2);
	padding: 0.75rem var(--space-3);
	color: var(--ink-700);
	text-decoration: none;
	font-weight: 500;
	font-size: 0.95rem;
	letter-spacing: 0.005em;
	white-space: nowrap;
	border-radius: 0;
	background: none;
	transition: color var(--transition-fast);
}
/* Underline-Indicator — wächst aus der Mitte, sitzt unter dem Text */
.nav__link::after {
	content: "";
	position: absolute;
	left: var(--space-3);
	right: var(--space-3);
	bottom: 0.35rem;
	height: 2px;
	background: var(--brand-500);
	transform: scaleX(0);
	transform-origin: 50% 50%;
	transition: transform var(--transition-med);
	border-radius: 2px;
}
.nav__link:hover {
	color: var(--ink-900);
	background: none;
}
.nav__link:hover::after { transform: scaleX(0.6); background: var(--ink-300); }

.nav__link.is-current,
.nav__item.current-menu-item > .nav__link,
.nav__item.current-menu-ancestor > .nav__link {
	color: var(--ink-900);
	font-weight: 600;
	background: none;
}
.nav__link.is-current::after,
.nav__item.current-menu-item > .nav__link::after,
.nav__item.current-menu-ancestor > .nav__link::after {
	transform: scaleX(1);
	background: var(--brand-500);
}

/* ------------------------------------------------------------- 4. Submenu */
.nav__submenu-toggle {
	background: transparent;
	border: 0;
	padding: var(--space-2);
	cursor: pointer;
	color: var(--ink-500);
	margin-left: -0.4rem;
	display: inline-flex;
	align-items: center;
	border-radius: var(--radius-sm);
}
.nav__submenu-toggle .nav__chevron {
	display: inline-flex;
	font-size: 0.85em;
	line-height: 1;
	transition: transform var(--transition-fast);
}
.nav__submenu-toggle[aria-expanded="true"] .nav__chevron { transform: rotate(180deg); }

.nav__submenu {
	position: absolute;
	top: calc(100% - 2px);
	left: 0;
	background: var(--white);
	border: 1px solid rgba(42, 49, 66, 0.08);
	border-radius: var(--radius-md);
	box-shadow: var(--shadow-lg);
	padding: var(--space-3);
	min-width: 260px;
	list-style: none;
	margin: 0;
	display: none;
	opacity: 0;
	transform: translateY(-6px);
	transition: opacity var(--transition-fast), transform var(--transition-fast);
}
.nav__item:hover > .nav__submenu,
.nav__item:focus-within > .nav__submenu,
.nav__submenu-toggle[aria-expanded="true"] + .nav__submenu {
	display: block;
	opacity: 1;
	transform: translateY(0);
}
.nav__submenu .nav__item { width: 100%; display: block; }
.nav__submenu .nav__link {
	display: block;
	padding: var(--space-3);
	border-radius: var(--radius-sm);
	white-space: normal;
}
.nav__submenu .nav__link::after { display: none; }
.nav__submenu .nav__link:hover {
	background: var(--brand-50);
	color: var(--brand-700);
}

/* ------------------------------------------------------------- 5. Sprachschalter (custom HTML, kein Polylang-Default) */
.site-header__lang {
	display: inline-flex;
	align-items: center;
	padding: 0.25rem;
	background: var(--ink-50);
	border-radius: 999px;
	gap: 0;
}
.site-header__lang-link {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 36px;
	padding: 0.35rem 0.7rem;
	font-size: 0.75rem;
	font-weight: 600;
	letter-spacing: 0.06em;
	color: var(--ink-500);
	text-decoration: none;
	border-radius: 999px;
	transition: background var(--transition-fast), color var(--transition-fast);
}
.site-header__lang-link:hover { color: var(--ink-900); }
.site-header__lang-link.is-current {
	background: var(--white);
	color: var(--ink-900);
	box-shadow: 0 1px 2px rgba(42, 49, 66, 0.08);
}

/* ------------------------------------------------------------- 6. Burger */
.site-header__burger {
	display: none;
	width: 44px;
	height: 44px;
	border: 0;
	background: transparent;
	cursor: pointer;
	padding: 0;
	position: relative;
	border-radius: var(--radius-sm);
}
.site-header__burger-bar {
	display: block;
	width: 22px;
	height: 2px;
	background: var(--ink-900);
	margin: 5px auto;
	border-radius: 2px;
	transition: transform var(--transition-med), opacity var(--transition-fast);
	transform-origin: center;
}
.site-header__burger[aria-expanded="true"] .site-header__burger-bar:nth-child(1) {
	transform: translateY(7px) rotate(45deg);
}
.site-header__burger[aria-expanded="true"] .site-header__burger-bar:nth-child(2) {
	opacity: 0;
}
.site-header__burger[aria-expanded="true"] .site-header__burger-bar:nth-child(3) {
	transform: translateY(-7px) rotate(-45deg);
}

/* ------------------------------------------------------------- 7. Mobile Drawer */
@media (max-width: 1080px) {
	.nav__link { padding-inline: var(--space-2); font-size: 0.9rem; }
	.nav__link::after { left: var(--space-2); right: var(--space-2); }
}

@media (max-width: 960px) {
	.site-header__inner {
		min-height: 68px;
		gap: var(--space-4);
	}
	.site-header__burger { display: block; order: 3; }

	/* Sprachschalter rückt links neben den Burger */
	.site-header__lang {
		order: 2;
		margin-left: auto;
	}
	.site-header__nav {
		gap: var(--space-3);
		margin-left: 0;
	}

	/* Drawer */
	.site-header__nav .nav.nav--primary {
		position: fixed;
		top: 0;
		right: 0;
		bottom: 0;
		width: min(86vw, 360px);
		background: var(--white);
		flex-direction: column;
		align-items: stretch;
		gap: 0;
		padding: calc(68px + var(--space-5)) var(--space-5) var(--space-7);
		box-shadow: -20px 0 60px rgba(42, 49, 66, 0.2);
		transform: translateX(100%);
		transition: transform var(--transition-med);
		overflow-y: auto;
		z-index: 90;
	}
	.site-header__nav[data-open="true"] .nav.nav--primary {
		transform: translateX(0);
	}

	/* Backdrop */
	.site-header__nav[data-open="true"]::before {
		content: "";
		position: fixed;
		inset: 0;
		background: rgba(42, 49, 66, 0.55);
		z-index: 80;
		animation: nav-fade-in var(--transition-med) both;
	}
	@keyframes nav-fade-in { from { opacity: 0 } to { opacity: 1 } }

	.nav.nav--primary .nav__item {
		width: 100%;
		display: block;
		border-bottom: 1px solid var(--ink-100);
	}
	.nav.nav--primary .nav__item:last-child { border-bottom: 0; }
	.nav.nav--primary .nav__link {
		width: 100%;
		padding: var(--space-4) var(--space-3);
		font-size: 1.05rem;
		font-weight: 600;
		white-space: normal;
	}
	.nav.nav--primary .nav__link::after { display: none; }
	.nav.nav--primary .nav__link.is-current {
		color: var(--brand-700);
		box-shadow: inset 3px 0 0 var(--brand-500);
	}

	/* Submenu inline im Drawer (kein Floating) */
	.nav__submenu {
		position: static;
		display: block;
		opacity: 1;
		transform: none;
		box-shadow: none;
		border: 0;
		border-left: 2px solid var(--brand-200);
		border-radius: 0;
		margin: 0 0 var(--space-3) var(--space-4);
		padding: 0 0 0 var(--space-3);
		min-width: 0;
		background: transparent;
	}
	.nav__submenu .nav__link {
		font-size: 0.95rem;
		font-weight: 500;
		padding: var(--space-2) var(--space-3);
	}
}

/* Body-Scroll-Lock wenn Drawer offen */
body.is-nav-open { overflow: hidden; }