/* =============================================================
   KIMIKON Navigation System — Navigation Layer
   Shared header/navigation layer for kimikon.cc and app pages.

   CSS layer order:
   1. design-system.css  foundation tokens + primitive components
   2. cards-system.css   reusable card surfaces
   3. motion-system.css  shared reveal and motion contracts
   4. page theme CSS     brand/page-specific layout and colors
   5. nav-system.css     this file: shared header/navigation

   Contract for future pages:
   - Load after the page theme stylesheet.
   - Keep semantic header shape: .site-header > .brand + nav/actions.
   - Page/theme defines color tokens only:
     --bg, --text, --muted, --border, --surface, --menu-surface,
     --accent, --accent-strong, --hover-text, --shadow, --shadow-glow.
   - Brand/app identity lives in the left .brand logo/text.
   - The nav shell stays structurally identical across pages.
   ============================================================= */

:root {
	--nav-max-width: 1120px;
	--nav-pad-x: max(20px, calc((100% - var(--nav-max-width)) / 2));
	--nav-pad-y: 18px;
	--nav-pill-gap: clamp(18px, 2.4vw, 24px);
	--nav-item-h: 40px;
	--nav-item-pad-x: 0;
	--nav-radius: 999px;
	--nav-card-radius: 8px;
	--nav-surface: var(--menu-surface, var(--surface));
	--nav-border: var(--border);
	--nav-text: var(--muted);
	--nav-active-bg: var(--accent);
	--nav-active-text: var(--hover-text, var(--bg));
	--nav-blur: blur(24px) saturate(1.25);
}

.site-header {
	position: sticky;
	top: 0;
	z-index: var(--z-header, 400);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	width: 100%;
	padding: var(--nav-pad-y) var(--nav-pad-x);
	isolation: isolate;
	backdrop-filter: blur(18px) saturate(1.18);
	will-change: opacity, transform, backdrop-filter;
	transition:
		opacity 360ms cubic-bezier(0.22, 1, 0.36, 1),
		transform 360ms cubic-bezier(0.22, 1, 0.36, 1),
		backdrop-filter 420ms cubic-bezier(0.22, 1, 0.36, 1),
		padding 420ms cubic-bezier(0.22, 1, 0.36, 1),
		box-shadow 420ms cubic-bezier(0.22, 1, 0.36, 1);
}

.site-header::after {
	position: absolute;
	inset: 0;
	z-index: -1;
	border-bottom: 1px solid color-mix(in srgb, var(--nav-border) 55%, transparent);
	background: color-mix(in srgb, var(--bg) 58%, transparent);
	content: "";
	pointer-events: none;
	transition:
		background 420ms cubic-bezier(0.22, 1, 0.36, 1),
		border-color 420ms cubic-bezier(0.22, 1, 0.36, 1);
}

.site-header.is-scrolled {
	--nav-pad-y: 12px;
	backdrop-filter: blur(26px) saturate(1.32);
	box-shadow: 0 18px 42px color-mix(in srgb, var(--text) 9%, transparent);
}

.site-header.is-scrolled::after {
	background: color-mix(in srgb, var(--bg) 72%, transparent);
	border-bottom-color: color-mix(in srgb, var(--nav-border) 70%, transparent);
}

.site-header.header-hidden:not(.is-nav-open):not(.is-menu-open) {
	opacity: 0;
	pointer-events: none;
	transform: translateY(-18px) scale(0.985);
}

.site-header.is-returning:not(.header-hidden) .brand,
.site-header.is-returning:not(.header-hidden) .top-actions,
.site-header.is-returning:not(.header-hidden) .header-actions {
	animation: navFadeReturn 360ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.site-header.is-scrolling-down:not(.header-hidden) .top-nav-links,
.site-header.is-scrolling-down:not(.header-hidden) .main-nav {
	opacity: 0.92;
	transform: translateY(-1px);
}

@keyframes navFadeReturn {
	from {
		opacity: 0;
		filter: blur(5px);
		transform: translateY(-8px);
	}
	to {
		opacity: 1;
		filter: blur(0);
		transform: translateY(0);
	}
}

.brand {
	position: relative;
	z-index: 110;
	display: inline-flex;
	align-items: center;
	gap: 11px;
	min-width: 0;
	color: var(--text);
	text-decoration: none;
}

.brand img,
.brand-mark {
	display: block;
	width: 42px;
	height: 42px;
	flex: 0 0 auto;
	object-fit: contain;
	filter: drop-shadow(0 14px 22px color-mix(in srgb, var(--accent) 18%, transparent));
	transition: filter 180ms ease, transform 180ms ease;
}

.brand:hover img,
.brand:focus-visible img,
.brand:hover .brand-mark,
.brand:focus-visible .brand-mark {
	filter: drop-shadow(0 16px 26px color-mix(in srgb, var(--accent) 26%, transparent));
	transform: translateY(-1px);
}

.brand-copy {
	display: grid;
	gap: 1px;
	min-width: 0;
}

.brand-name,
.brand > span:not(.brand-copy) {
	font-weight: 800;
	letter-spacing: -0.01em;
	line-height: 1.1;
}

.brand-meta {
	color: var(--muted);
	font-family: var(--font-mono, var(--ds-font-mono));
	font-size: 0.7rem;
	font-weight: 500;
	letter-spacing: 0.04em;
	line-height: 1.2;
}

.header-actions,
.top-actions {
	position: relative;
	z-index: 1;
	display: flex;
	align-items: center;
	justify-content: flex-end;
	gap: 10px;
	margin-left: auto;
	padding: 0;
	border: 0;
	background: transparent;
	box-shadow: none;
	backdrop-filter: none;
	transition:
		opacity 260ms cubic-bezier(0.22, 1, 0.36, 1),
		transform 260ms cubic-bezier(0.22, 1, 0.36, 1),
		filter 260ms cubic-bezier(0.22, 1, 0.36, 1);
}

.main-nav,
.top-nav-links {
	display: inline-flex;
	align-items: center;
	gap: var(--nav-pill-gap);
	overflow: visible;
	padding: 0;
	border: 0;
	border-radius: 0;
	background: transparent;
	box-shadow: none;
	backdrop-filter: none;
	color: var(--nav-text);
	font-size: 0.82rem;
	transition:
		opacity 260ms cubic-bezier(0.22, 1, 0.36, 1),
		transform 260ms cubic-bezier(0.22, 1, 0.36, 1),
		box-shadow 260ms cubic-bezier(0.22, 1, 0.36, 1),
		background 260ms cubic-bezier(0.22, 1, 0.36, 1),
		border-color 260ms cubic-bezier(0.22, 1, 0.36, 1);
}

.main-nav > .desktop-nav-link,
.main-nav > .desktop-nav-group > .nav-group-link,
.top-nav-links > a,
.top-nav-group > .top-nav-link {
	position: relative;
	display: inline-flex;
	min-height: var(--nav-item-h);
	align-items: center;
	justify-content: center;
	padding: 4px var(--nav-item-pad-x);
	border-radius: 0;
	background: transparent;
	color: var(--nav-text);
	font: inherit;
	font-weight: 820;
	letter-spacing: 0.04em;
	line-height: 1;
	text-decoration: none;
	text-transform: uppercase;
	transform-origin: center;
	transition:
		color 180ms ease,
		text-shadow 180ms ease,
		transform 180ms ease;
}

.main-nav > .desktop-nav-link::after,
.main-nav > .desktop-nav-group > .nav-group-link::after,
.top-nav-links > a::after,
.top-nav-group > .top-nav-link::after {
	position: absolute;
	right: 0;
	bottom: 4px;
	left: 0;
	height: 2px;
	background: linear-gradient(90deg, var(--accent), var(--amber, var(--accent-strong)));
	content: "";
	transform: scaleX(0);
	transform-origin: left;
	transition: transform 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

.main-nav > .desktop-nav-link:hover,
.main-nav > .desktop-nav-link:focus-visible,
.main-nav > .desktop-nav-link[aria-current="page"],
.main-nav > .desktop-nav-group:hover > .nav-group-link,
.main-nav > .desktop-nav-group:focus-within > .nav-group-link,
.main-nav > .desktop-nav-group > .nav-group-link[aria-current="page"],
.top-nav-links > a:hover,
.top-nav-links > a:focus-visible,
.top-nav-links > a[aria-current="page"],
.top-nav-group:hover > .top-nav-link,
.top-nav-group:focus-within > .top-nav-link,
.top-nav-group.is-active > .top-nav-link {
	background: transparent;
	color: var(--text);
	text-shadow: 0 0 18px color-mix(in srgb, var(--accent) 28%, transparent);
	outline: none;
	transform: translateY(-1px) scale(1.035);
}

.main-nav > .desktop-nav-link:hover::after,
.main-nav > .desktop-nav-link:focus-visible::after,
.main-nav > .desktop-nav-link[aria-current="page"]::after,
.main-nav > .desktop-nav-group:hover > .nav-group-link::after,
.main-nav > .desktop-nav-group:focus-within > .nav-group-link::after,
.main-nav > .desktop-nav-group > .nav-group-link[aria-current="page"]::after,
.top-nav-links > a:hover::after,
.top-nav-links > a:focus-visible::after,
.top-nav-links > a[aria-current="page"]::after,
.top-nav-group:hover > .top-nav-link::after,
.top-nav-group:focus-within > .top-nav-link::after,
.top-nav-group.is-active > .top-nav-link::after {
	transform: scaleX(1);
}

.desktop-nav-group,
.top-nav-group {
	position: relative;
	display: inline-flex;
	align-items: center;
}

.desktop-nav-group::before,
.top-nav-group::before {
	position: absolute;
	top: 100%;
	right: -16px;
	left: -16px;
	height: 20px;
	content: "";
}

.desktop-subnav,
.top-subnav {
	position: absolute;
	top: calc(100% + 14px);
	left: -18px;
	z-index: var(--z-dropdown, 500);
	display: grid;
	gap: 4px;
	min-width: 280px;
	padding: 10px;
	border: 1px solid color-mix(in srgb, var(--accent) 26%, var(--nav-border));
	border-radius: var(--nav-card-radius);
	background:
		radial-gradient(circle at 14% 0%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 17rem),
		linear-gradient(140deg, color-mix(in srgb, var(--nav-surface) 92%, #000 8%), color-mix(in srgb, var(--bg) 88%, #000 12%));
	box-shadow:
		0 28px 78px rgba(0, 0, 0, 0.34),
		inset 0 1px 0 color-mix(in srgb, var(--glass-line, rgba(255, 255, 255, 0.12)) 68%, transparent);
	backdrop-filter: blur(18px) saturate(1.18);
	opacity: 0;
	pointer-events: none;
	visibility: hidden;
	transform: translateY(8px);
	transform-origin: top left;
	will-change: opacity, transform;
	transition:
		opacity 240ms cubic-bezier(0.22, 1, 0.36, 1),
		transform 240ms cubic-bezier(0.22, 1, 0.36, 1),
		visibility 240ms cubic-bezier(0.22, 1, 0.36, 1);
}

.desktop-nav-group:hover .desktop-subnav,
.desktop-nav-group:focus-within .desktop-subnav,
.top-nav-group:hover .top-subnav,
.top-nav-group:focus-within .top-subnav {
	opacity: 1;
	pointer-events: auto;
	visibility: visible;
	transform: translateY(0);
}

.desktop-subnav a,
.top-subnav a {
	display: grid;
	gap: 3px;
	padding: 12px 13px;
	border-left: 2px solid transparent;
	border-radius: 6px;
	background: transparent;
	color: var(--text);
	text-decoration: none;
	white-space: nowrap;
	transition: background 180ms ease, border-color 180ms ease, box-shadow 180ms ease, color 180ms ease, transform 180ms ease;
}

.desktop-subnav small,
.top-subnav small {
	color: var(--muted);
	font-size: 0.78rem;
	font-weight: 650;
	line-height: 1.25;
	transition: color 180ms ease;
}

.desktop-subnav a:hover,
.desktop-subnav a:focus-visible,
.desktop-subnav a[aria-current="page"],
.top-subnav a:hover,
.top-subnav a:focus-visible,
.top-subnav a[aria-current="page"] {
	border-left-color: var(--accent);
	background:
		linear-gradient(90deg, color-mix(in srgb, var(--accent) 18%, transparent), color-mix(in srgb, var(--accent-strong) 8%, transparent)),
		color-mix(in srgb, var(--text) 3.5%, transparent);
	box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent-strong) 13%, transparent);
	color: var(--text);
	outline: none;
	transform: translateX(3px);
}

.desktop-subnav a:hover small,
.desktop-subnav a:focus-visible small,
.desktop-subnav a[aria-current="page"] small,
.top-subnav a:hover small,
.top-subnav a:focus-visible small,
.top-subnav a[aria-current="page"] small {
	color: color-mix(in srgb, var(--text) 76%, transparent);
}

.nav-toggle,
.top-nav-toggle {
	display: none;
	width: 42px;
	height: 38px;
	place-items: center;
	padding: 0;
	border: 1px solid var(--nav-border);
	border-radius: var(--nav-radius);
	background: var(--surface);
	box-shadow: var(--shadow);
	color: var(--text);
	cursor: pointer;
	backdrop-filter: var(--nav-blur);
	transition: background 180ms ease, box-shadow 180ms ease, color 180ms ease, transform 180ms ease;
}

.nav-toggle span,
.top-nav-toggle span {
	display: block;
	grid-area: 1 / 1;
	width: 17px;
	height: 2px;
	border-radius: var(--nav-radius);
	background: currentColor;
	transition: opacity 180ms ease, transform 220ms ease;
}

.nav-toggle span:nth-child(1),
.top-nav-toggle span:nth-child(1) {
	transform: translateY(-6px);
}

.nav-toggle span:nth-child(3),
.top-nav-toggle span:nth-child(3) {
	transform: translateY(6px);
}

.nav-toggle:hover,
.nav-toggle:focus-visible,
.nav-toggle[aria-expanded="true"],
.top-nav-toggle:hover,
.top-nav-toggle:focus-visible,
.top-nav-toggle[aria-expanded="true"] {
	background: var(--nav-active-bg);
	color: var(--nav-active-text);
	box-shadow: var(--shadow-glow);
	outline: none;
	transform: translateY(-1px);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1),
.top-nav-toggle[aria-expanded="true"] span:nth-child(1) {
	transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2),
.top-nav-toggle[aria-expanded="true"] span:nth-child(2) {
	opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3),
.top-nav-toggle[aria-expanded="true"] span:nth-child(3) {
	transform: rotate(-45deg);
}

.lang-switch,
.top-lang-switch {
	position: relative;
	display: inline-flex;
	align-items: center;
}

@media (min-width: 921px) {
	.lang-switch,
	.top-lang-switch {
		margin-left: 2px;
		padding: 0;
		border-color: transparent;
		background: transparent;
		box-shadow: none;
		backdrop-filter: none;
	}

	.lang-switch-trigger,
	.top-lang-trigger {
		position: relative;
		display: inline-flex;
		min-width: 34px;
		height: 40px;
		align-items: center;
		justify-content: center;
		padding: 4px 0;
		border: 0;
		border-radius: 0;
		background: transparent;
		color: var(--nav-text);
		font: inherit;
		font-size: 0.82rem;
		font-weight: 820;
		letter-spacing: 0.04em;
		line-height: 1;
		text-transform: uppercase;
		cursor: pointer;
		text-decoration: none;
		transform-origin: center;
		transition: color 180ms ease, text-shadow 180ms ease, transform 180ms ease;
	}

	.lang-switch-trigger::after,
	.top-lang-trigger::after {
		position: absolute;
		right: 0;
		bottom: 4px;
		left: 0;
		height: 2px;
		background: linear-gradient(90deg, var(--accent), var(--amber, var(--accent-strong)));
		content: "";
		transform: scaleX(0);
		transform-origin: left;
		transition: transform 220ms cubic-bezier(0.22, 1, 0.36, 1);
	}

	.lang-chevron,
	.top-lang-chevron {
		display: none;
	}

	.lang-options,
	.top-lang-options {
		position: absolute;
		top: calc(100% + 14px);
		left: 50%;
		right: auto;
		z-index: var(--z-dropdown, 500);
		display: grid;
		gap: 4px;
		width: max-content;
		min-width: 150px;
		padding: 8px;
		border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--nav-border));
		border-radius: var(--nav-card-radius);
		background:
			radial-gradient(circle at 14% 0%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 14rem),
			linear-gradient(140deg, color-mix(in srgb, var(--nav-surface) 92%, #000 8%), color-mix(in srgb, var(--bg) 88%, #000 12%));
		box-shadow:
			0 24px 66px rgba(0, 0, 0, 0.32),
			inset 0 1px 0 color-mix(in srgb, var(--glass-line, rgba(255, 255, 255, 0.12)) 68%, transparent);
		backdrop-filter: blur(18px) saturate(1.18);
		opacity: 0;
		pointer-events: none;
		transform: translate(-50%, -4px) scale(0.98);
		transform-origin: top center;
		transition: opacity 160ms ease, transform 160ms ease;
	}

	.lang-switch.is-open .lang-options,
	.top-lang-switch.is-open .top-lang-options {
		opacity: 1;
		pointer-events: auto;
		transform: translate(-50%, 0) scale(1);
	}

	.lang-options button,
	.top-lang-options a {
		display: flex;
		width: 100%;
		min-width: 0;
		min-height: 38px;
		align-items: center;
		justify-content: flex-start;
		padding: 0 12px;
		border: 0;
		border-left: 2px solid transparent;
		border-radius: 6px;
		background: transparent;
		color: var(--nav-text);
		font: inherit;
		font-size: 0.86rem;
		font-weight: 760;
		text-align: left;
		text-decoration: none;
		cursor: pointer;
		transition: background 180ms ease, border-color 180ms ease, color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
	}

	.lang-switch-trigger:hover,
	.lang-switch-trigger:focus-visible,
	.lang-switch-trigger[aria-expanded="true"],
	.lang-options button:hover,
	.lang-options button:focus-visible,
	.lang-options button[aria-checked="true"],
	.top-lang-trigger:hover,
	.top-lang-trigger:focus-visible,
	.top-lang-trigger[aria-expanded="true"],
	.top-lang-options a:hover,
	.top-lang-options a:focus-visible,
	.top-lang-options a[aria-current="page"] {
		background: transparent;
		color: var(--text);
		text-shadow: 0 0 18px color-mix(in srgb, var(--accent) 28%, transparent);
		outline: none;
		transform: translateY(-1px) scale(1.035);
	}

	.lang-switch-trigger:hover::after,
	.lang-switch-trigger:focus-visible::after,
	.lang-switch-trigger[aria-expanded="true"]::after,
	.top-lang-trigger:hover::after,
	.top-lang-trigger:focus-visible::after,
	.top-lang-trigger[aria-expanded="true"]::after {
		transform: scaleX(1);
	}

	.lang-options button:hover,
	.lang-options button:focus-visible,
	.lang-options button[aria-checked="true"],
	.top-lang-options a:hover,
	.top-lang-options a:focus-visible,
	.top-lang-options a[aria-current="page"] {
		border-left-color: var(--accent);
		background:
			linear-gradient(90deg, color-mix(in srgb, var(--accent) 18%, transparent), color-mix(in srgb, var(--accent-strong) 8%, transparent)),
			color-mix(in srgb, var(--text) 3.5%, transparent);
		box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent-strong) 13%, transparent);
		transform: translateX(3px);
	}
}

.mobile-menu-content,
.mobile-menu-section,
.mobile-nav-lang {
	display: none;
}

@media (max-width: 920px) {
	.site-header {
		--nav-pad-y: 18px;
		align-items: center;
		flex-direction: row;
		gap: 12px;
		z-index: var(--z-mobile-nav, 600);
		backdrop-filter: none;
	}

	.site-header::after {
		backdrop-filter: blur(22px) saturate(1.25);
	}

	.site-header.is-nav-open::after {
		backdrop-filter: none;
	}

	.header-actions,
	.top-actions {
		display: grid;
		grid-template-columns: max-content;
		width: auto;
		align-items: center;
		justify-content: end;
		gap: 8px;
		margin-left: auto;
	}

	.header-actions::before,
	.top-actions::before {
		position: fixed;
		inset: 0;
		z-index: 95;
		display: none;
		background: var(--bg);
		content: "";
	}

	.header-actions.is-nav-open::before,
	.top-actions.is-menu-open::before {
		display: block;
	}

	body.nav-menu-open,
	body.kimitalk-menu-open {
		background: var(--bg);
	}

	body.nav-menu-open main,
	body.nav-menu-open footer,
	body.nav-menu-open .ambient-bg,
	body.kimitalk-menu-open main,
	body.kimitalk-menu-open footer {
		visibility: hidden;
	}

	.nav-toggle,
	.top-nav-toggle {
		position: relative;
		z-index: 110;
		display: grid !important;
		width: 44px;
		height: 44px;
		border: 0;
		background: transparent;
		box-shadow: none;
		backdrop-filter: none;
		color: var(--text);
		opacity: 1;
		visibility: visible;
	}

	.top-nav-links,
	.lang-switch,
	.top-lang-switch,
	.main-nav > .desktop-nav-link,
	.main-nav > .desktop-nav-group,
	.desktop-nav-link,
	.desktop-nav-group,
	.top-nav-group {
		display: none !important;
	}

	.main-nav,
	.top-mobile-menu {
		position: fixed;
		inset: 0;
		z-index: 100;
		display: block;
		width: auto;
		height: 100vh;
		height: 100dvh;
		max-height: none;
		padding: 92px max(24px, env(safe-area-inset-right)) 40px max(24px, env(safe-area-inset-left));
		overflow-y: auto;
		border: 0;
		border-radius: 0;
		background: var(--bg);
		box-shadow: none;
		backdrop-filter: none;
		opacity: 0;
		pointer-events: none;
		transform: translateY(-20px);
		transform-origin: top center;
		transition: opacity 400ms ease, transform 400ms ease;
	}

	.header-actions.is-nav-open .main-nav,
	.top-actions.is-menu-open .top-mobile-menu {
		opacity: 1;
		pointer-events: auto;
		transform: translateY(0);
	}

	.header-actions.is-nav-open .main-nav > .desktop-nav-link,
	.header-actions.is-nav-open .main-nav > .desktop-nav-group {
		display: none !important;
	}

	.mobile-menu-content {
		display: flex !important;
		flex-direction: column;
		width: min(760px, 100%);
		margin: 0 auto;
		gap: 0;
	}

	.header-actions.is-nav-open .main-nav > .mobile-menu-content {
		position: relative;
		z-index: 101;
		display: flex !important;
		flex-direction: column;
		visibility: visible !important;
		opacity: 1 !important;
		transform: none !important;
	}

	.top-mobile-menu {
		display: grid;
		gap: 0;
	}

	.mobile-menu-section,
	.top-mobile-menu-section {
		display: flex !important;
		flex-direction: column;
		gap: 6px;
		width: min(760px, 100%);
		margin: 0 auto;
		padding: 18px 0;
		border: 0;
		border-bottom: 1px solid var(--nav-border);
		border-radius: 0;
		background: transparent;
		opacity: 0;
		transform: translateY(12px);
		transition: opacity 300ms ease, transform 300ms ease;
	}

	.mobile-menu-section:last-child,
	.top-mobile-menu-section:last-child {
		border-bottom: 0;
	}

	.header-actions.is-nav-open .mobile-menu-section,
	.top-actions.is-menu-open .top-mobile-menu-section {
		visibility: visible;
		opacity: 1 !important;
		transform: translateY(0) !important;
	}

	.header-actions.is-nav-open .mobile-menu-section:nth-child(1),
	.top-actions.is-menu-open .top-mobile-menu-section:nth-child(1) {
		transition-delay: 50ms;
	}

	.header-actions.is-nav-open .mobile-menu-section:nth-child(2),
	.top-actions.is-menu-open .top-mobile-menu-section:nth-child(2) {
		transition-delay: 100ms;
	}

	.header-actions.is-nav-open .mobile-menu-section:nth-child(3),
	.top-actions.is-menu-open .top-mobile-menu-section:nth-child(3) {
		transition-delay: 150ms;
	}

	.header-actions.is-nav-open .mobile-menu-section:nth-child(4),
	.top-actions.is-menu-open .top-mobile-menu-section:nth-child(4) {
		transition-delay: 200ms;
	}

	.mobile-menu-label,
	.top-mobile-menu-label {
		padding: 0 0 4px;
		color: var(--muted);
		font-size: 0.76rem;
		font-weight: 780;
		letter-spacing: 0;
		text-transform: uppercase;
	}

	.mobile-menu-item,
	.main-nav .mobile-menu-item,
	.top-mobile-menu-item,
	.top-mobile-menu-language a {
		display: flex;
		flex-direction: column;
		gap: 1px;
		min-width: 0;
		min-height: auto;
		align-items: flex-start;
		justify-content: center;
		padding: 9px 0;
		border: 0;
		border-radius: 0;
		background: transparent;
		color: var(--text);
		font-size: clamp(1.7rem, 7vw, 2.25rem);
		font-weight: 760;
		line-height: 1.08;
		text-align: left;
		text-decoration: none;
		white-space: normal;
	}

	.mobile-menu-item small,
	.top-mobile-menu-item small {
		color: var(--muted);
		font-size: 1rem;
		font-weight: 560;
		line-height: 1.35;
	}

	.mobile-menu-item:hover,
	.mobile-menu-item:focus-visible,
	.main-nav .mobile-menu-item:hover,
	.main-nav .mobile-menu-item:focus-visible,
	.top-mobile-menu-item:hover,
	.top-mobile-menu-item:focus-visible,
	.top-mobile-menu-item[aria-current="page"],
	.top-mobile-menu-language a:hover,
	.top-mobile-menu-language a:focus-visible,
	.top-mobile-menu-language a[aria-current="page"] {
		background: transparent;
		color: var(--accent-strong);
		outline: none;
		transform: none;
	}

	.mobile-menu-item:hover small,
	.mobile-menu-item:focus-visible small,
	.top-mobile-menu-item:hover small,
	.top-mobile-menu-item:focus-visible small,
	.top-mobile-menu-item[aria-current="page"] small {
		color: var(--muted);
	}

	.mobile-nav-lang,
	.top-mobile-menu-language {
		display: grid;
		gap: 8px;
	}

	.mobile-nav-lang > div,
	.top-mobile-menu-language > div {
		display: grid;
		grid-template-columns: repeat(2, minmax(0, 1fr));
		gap: 6px;
	}

	.mobile-nav-lang button,
	.top-mobile-menu-language a {
		min-height: 44px;
		justify-items: center;
		align-content: center;
		border: 1px solid var(--nav-border);
		border-radius: var(--nav-radius);
		color: var(--muted);
		font-size: 0.82rem;
		font-weight: 780;
		text-align: center;
	}

	.mobile-nav-lang button:hover,
	.mobile-nav-lang button:focus-visible,
	.mobile-nav-lang button[aria-checked="true"],
	.top-mobile-menu-language a:hover,
	.top-mobile-menu-language a:focus-visible,
	.top-mobile-menu-language a[aria-current="page"] {
		border-color: color-mix(in srgb, var(--accent) 34%, var(--nav-border));
		background: var(--nav-active-bg);
		color: var(--nav-active-text);
		outline: none;
	}
}

@media (prefers-reduced-motion: reduce) {
	.site-header,
	.main-nav,
	.top-mobile-menu,
	.mobile-menu-section,
	.top-mobile-menu-section,
	.nav-toggle,
	.top-nav-toggle,
	.desktop-subnav,
	.top-subnav,
	.lang-options,
	.top-lang-options {
		transition: none !important;
	}
}