/* Component: Navigation + site header */

.site-header {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 100;
	background-color: var(--color-bg);
	border-bottom: 1px solid var(--color-header-border);
	transition: box-shadow 0.3s ease, background-color 0.25s ease;
}

.site-header.is-scrolled {
	box-shadow: 0 2px 16px var(--color-shadow);
	background-color: rgba(255, 255, 255, 0.9);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
}

[data-theme="night"] .site-header.is-scrolled {
	background-color: rgba(15, 20, 25, 0.9);
}

.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: flex-start;
	gap: var(--spacing-sm);
	height: 70px;
	padding: 0 20px;
}

.site-branding {
	display: flex;
	align-items: center;
	flex-shrink: 0;
	order: 1;
}

.site-title {
	margin: 0;
	font-size: 1.25rem;
	font-weight: 700;
}

.site-title a {
	color: var(--color-text);
	text-decoration: none;
}

body {
	padding-top: 70px;
}

.header-actions {
	display: flex;
	align-items: center;
	gap: 15px;
	margin-left: auto;
	order: 3;
}

.header-phone {
	color: var(--color-primary);
	font-weight: 700;
	text-decoration: none;
	font-size: 1.1rem;
	transition: color 0.2s;
}
.header-phone:hover {
	color: var(--color-primary-hover);
}

.nav-toggle {
	display: flex;
	flex-direction: column;
	justify-content: center;
	gap: 5px;
	width: 44px;
	height: 44px;
	padding: 10px;
	background: none;
	border: none;
	cursor: pointer;
	position: relative;
	z-index: 200;
	flex-shrink: 0;
}

.nav-toggle__bar {
	display: block;
	width: 24px;
	height: 2px;
	background-color: var(--color-text);
	border-radius: 2px;
	transition: transform 0.35s ease, opacity 0.25s ease, background-color 0.25s ease;
	transform-origin: center;
}

.is-nav-open .nav-toggle__bar:nth-child(1) {
	transform: translateY(7px) rotate(45deg);
}

.is-nav-open .nav-toggle__bar:nth-child(2) {
	opacity: 0;
	transform: scaleX(0);
}

.is-nav-open .nav-toggle__bar:nth-child(3) {
	transform: translateY(-7px) rotate(-45deg);
}

.c-nav-overlay {
	position: fixed;
	top: 0;
	right: 0;
	width: min(420px, 100vw);
	height: 100vh;
	height: 100dvh;
	background-color: var(--color-nav-bg);
	z-index: 150;
	transform: translateX(100%);
	transition: transform 0.42s cubic-bezier(0.77, 0, 0.175, 1);
	display: flex;
	flex-direction: column;
	overflow-y: auto;
}

.is-nav-open .c-nav-overlay {
	transform: translateX(0);
}

.c-nav-overlay__inner {
	position: relative;
	display: flex;
	flex-direction: column;
	height: 100%;
	padding: 90px 48px 48px;
}

.c-nav-overlay__backdrop {
	position: fixed;
	inset: 0;
	background-color: var(--color-backdrop);
	z-index: 140;
	opacity: 0;
	pointer-events: none;
	transition: opacity 0.42s ease;
	cursor: pointer;
	border: none;
	-webkit-backdrop-filter: blur(2px);
	backdrop-filter: blur(2px);
}

.is-nav-open .c-nav-overlay__backdrop {
	opacity: 1;
	pointer-events: auto;
}

.is-nav-open {
	overflow: hidden;
}

.c-nav-overlay__close {
	position: absolute;
	top: 20px;
	right: 20px;
	width: 44px;
	height: 44px;
	display: flex;
	align-items: center;
	justify-content: center;
	background: color-mix(in srgb, var(--color-nav-text) 8%, transparent);
	border: 1px solid color-mix(in srgb, var(--color-nav-text) 15%, transparent);
	border-radius: 50%;
	color: var(--color-nav-text);
	font-size: 1.5rem;
	line-height: 1;
	cursor: pointer;
	transition: background 0.2s ease, transform 0.2s ease;
}

.c-nav-overlay__close:hover {
	background: color-mix(in srgb, var(--color-nav-text) 18%, transparent);
	transform: rotate(90deg);
}

.c-nav-overlay__menu {
	list-style: none;
	margin: 0;
	padding: 0;
}

.c-nav-overlay__menu > li {
	border-bottom: 1px solid var(--color-nav-border);
}

.c-nav-overlay__menu > li:first-child {
	border-top: 1px solid var(--color-nav-border);
}

.c-nav-overlay__menu > li > a {
	display: block;
	padding: 18px 0;
	color: var(--color-nav-text);
	font-size: 1.2rem;
	font-weight: 500;
	letter-spacing: 0.03em;
	text-decoration: none;
	transition: color 0.2s ease, padding-left 0.2s ease;
}

.c-nav-overlay__menu > li > a:hover,
.c-nav-overlay__menu > li.current-menu-item > a {
	color: var(--color-secondary);
	padding-left: 10px;
}

.c-nav-overlay__menu .sub-menu {
	list-style: none;
	padding: 0 0 8px 16px;
	margin: 0;
}

.c-nav-overlay__menu .sub-menu a {
	display: block;
	padding: 8px 0;
	color: var(--color-nav-text-muted);
	font-size: 0.95rem;
	text-decoration: none;
	transition: color 0.2s ease;
}

.c-nav-overlay__menu .sub-menu a:hover {
	color: var(--color-nav-text);
}