.site-header {
	position: sticky;
	top: 0;
	z-index: 500;
	background: oklch(99% 0.002 200 / 92%);
	border-bottom: 1px solid var(--border);
	transition: box-shadow 260ms var(--ease-out), background-color 260ms var(--ease-out);
}

@media (min-width: 900px) {
	.site-header { backdrop-filter: blur(14px); }
}

.site-header.is-condensed {
	box-shadow: 0 8px 24px -16px oklch(20% 0.03 230 / 35%);
}

.header-inner {
	max-width: var(--container-w);
	margin-inline: auto;
	padding-inline: clamp(1.25rem, 4vw, 2.5rem);
	height: var(--header-h);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: clamp(1rem, 3vw, 2.5rem);
	transition: height 260ms var(--ease-out);
}

.is-condensed .header-inner { height: 64px; }

.site-logo {
	display: flex;
	flex-direction: column;
	line-height: 1.15;
	flex: 0 0 auto;
}
.site-logo img { max-height: 48px; width: auto; transition: max-height 260ms var(--ease-out); }
.is-condensed .site-logo img { max-height: 36px; }

.site-logo__name {
	font-family: var(--font-display);
	font-weight: 600;
	font-size: 1.15rem;
	color: var(--primary);
}
.site-logo__meta {
	font-size: 0.72rem;
	color: var(--text-muted);
	letter-spacing: 0.03em;
}

.primary-nav { flex: 1 1 auto; }

.nav-menu {
	display: flex;
	align-items: center;
	gap: clamp(1.25rem, 2.4vw, 2.25rem);
	list-style: none;
	margin: 0;
	padding: 0;
}

.nav-menu > .menu-item { position: relative; }

.nav-menu > .menu-item > a {
	display: inline-flex;
	align-items: center;
	gap: 0.3em;
	font-weight: 600;
	font-size: 0.95rem;
	color: var(--primary);
	padding: 0.4em 0;
	position: relative;
}
.nav-menu > .menu-item > a::after {
	content: '';
	position: absolute;
	left: 0; right: 100%;
	bottom: -2px;
	height: 2px;
	background: var(--accent-dark);
	transition: right 220ms var(--ease-out);
}
.nav-menu > .menu-item > a:hover::after,
.nav-menu > .menu-item > a:focus-visible::after { right: 0; }

.submenu-toggle-icon { width: 0.9em; height: 0.9em; transition: transform 200ms var(--ease-out); }

.nav-menu .sub-menu {
	position: absolute;
	top: 100%;
	left: 0;
	min-width: 260px;
	margin-top: 0.75rem;
	padding: 0.5rem;
	list-style: none;
	background: #fff;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	box-shadow: 0 18px 40px -20px oklch(20% 0.05 230 / 40%);
	opacity: 0;
	visibility: hidden;
	transform: translateY(-6px);
	transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out), visibility 200ms;
}

.nav-menu .menu-item.has-children:hover > .sub-menu,
.nav-menu .menu-item.has-children:focus-within > .sub-menu {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}
.nav-menu .menu-item.has-children:hover > a .submenu-toggle-icon,
.nav-menu .menu-item.has-children:focus-within > a .submenu-toggle-icon { transform: rotate(180deg); }

.nav-menu .sub-menu .menu-item a {
	display: block;
	padding: 0.65em 0.85em;
	border-radius: var(--radius);
	font-weight: 500;
	color: var(--text);
}
.nav-menu .sub-menu .menu-item a:hover { background: var(--surface); color: var(--primary); }

.header-actions { display: flex; align-items: center; gap: 1rem; flex: 0 0 auto; }

.header-cta .icon { width: 1.1em; height: 1.1em; }

.burger {
	display: none;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	gap: 5px;
	width: 44px;
	height: 44px;
	padding: 0;
	background: transparent;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	cursor: pointer;
}
.burger__bar {
	width: 20px;
	height: 2px;
	background: var(--primary);
	transition: transform 240ms var(--ease-out), opacity 200ms var(--ease-out);
}
.burger[aria-expanded="true"] .burger__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] .burger__bar:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] .burger__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.drawer-overlay {
	position: fixed;
	inset: 0;
	background: oklch(20% 0.03 230 / 45%);
	z-index: 600;
	opacity: 0;
	pointer-events: none;
	transition: opacity 260ms var(--ease-out);
}
.drawer-overlay.is-visible { opacity: 1; pointer-events: auto; }

.mobile-drawer {
	position: fixed;
	top: 0;
	right: 0;
	height: 100%;
	width: min(86vw, 380px);
	background: var(--bg);
	z-index: 700;
	transform: translateX(100%);
	transition: transform 300ms var(--ease-out);
	display: flex;
	flex-direction: column;
	box-shadow: -24px 0 48px -24px oklch(20% 0.05 230 / 40%);
}
.mobile-drawer.is-open { transform: translateX(0); }

.mobile-drawer__inner {
	padding: clamp(1.5rem, 5vw, 2.5rem);
	overflow-y: auto;
	display: flex;
	flex-direction: column;
	gap: 2rem;
	height: 100%;
}

.drawer-close {
	align-self: flex-end;
	width: 44px;
	height: 44px;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	background: transparent;
	cursor: pointer;
}

.mobile-nav__menu, .sub-menu-mobile {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
}
.mobile-nav__menu > .menu-item { border-bottom: 1px solid var(--border); }
.mobile-nav__menu > .menu-item > a {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 1em 0.25em;
	font-weight: 600;
	font-size: 1.05rem;
	color: var(--primary);
	min-height: 44px;
}
.mobile-nav__menu .sub-menu {
	list-style: none;
	margin: 0 0 0.75em;
	padding-left: 1em;
	max-height: 0;
	overflow: hidden;
	transition: max-height 280ms var(--ease-out);
}
.mobile-nav__menu .menu-item.is-expanded .sub-menu { max-height: 320px; }
.mobile-nav__menu .sub-menu a {
	display: block;
	padding: 0.65em 0.25em;
	color: var(--text);
	font-weight: 500;
}

.mobile-drawer__contact {
	margin-top: auto;
	display: flex;
	flex-direction: column;
	gap: 0.85rem;
	padding-top: 1.5rem;
	border-top: 1px solid var(--border);
}

.contact-line {
	display: flex;
	align-items: center;
	gap: 0.6rem;
	color: var(--text);
}
.contact-line .icon { color: var(--accent-dark); flex-shrink: 0; }
.contact-line a:hover { color: var(--primary); }
.contact-line--static { align-items: flex-start; }

@media (max-width: 900px) {
	.primary-nav { display: none; }
	.header-cta { display: none; }
	.burger { display: flex; }
	.site-header { backdrop-filter: none; }

	.nav-menu .menu-item.has-children:hover > .sub-menu,
	.nav-menu .menu-item.has-children:focus-within > .sub-menu {
		opacity: 0;
		visibility: hidden;
		transform: translateY(-6px);
	}
}

@media (max-width: 600px) {
	.header-inner { height: 72px; }
	.is-condensed .header-inner { height: 60px; }
}