/* ==========================================================================
   OPUS — шапка сайта (Tessellatum / remix_kimi_k3_pro)
   Строго на переменных var(--opus-*) / rgba(var(--opus-*-rgb), a) (C15).
   ========================================================================== */

.utility-bar {
	height: 30px;
	background: var(--opus-deep);
	color: rgba(var(--opus-ivory-rgb), 0.68);
	font-family: var(--opus-font-text);
	font-size: 9px;
	letter-spacing: 0.14em;
	text-transform: uppercase;
}

.utility-bar .wrap {
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.utility-bar__right {
	display: flex;
	gap: 28px;
}

header.site-header {
	position: relative;
	z-index: 50;
	border-bottom: 1px solid rgba(var(--opus-ink-rgb), 0.2);
	background-color: var(--opus-ivory);
	color: var(--opus-ink);
}

header.site-header:not(.site-header--dark) a {
	color: var(--opus-ink);
}

header.site-header.site-header--dark {
	background-color: var(--opus-deep);
	color: var(--opus-ivory);
	border-color: rgba(var(--opus-ivory-rgb), 0.16);
}

header.site-header.site-header--dark a {
	color: var(--opus-ivory);
}

.site-header__in {
	height: 88px;
	display: grid;
	grid-template-columns: 180px 1fr auto;
	align-items: center;
	gap: 30px;
}

.brand {
	width: 102px;
	display: block;
}

.brand img {
	width: 100%;
	height: auto;
	display: block;
}

/* На светлой шапке инвертируем светлый логотип в тёмный, на тёмной — оставляем светлым. */
.site-header:not(.site-header--dark) .brand img {
	filter: brightness(0.14) sepia(0.25) hue-rotate(85deg) saturate(1.1);
}

.site-header--dark .brand {
	filter: drop-shadow(0 1px 8px rgba(var(--opus-deep-rgb), 0.35));
}

/* ---------- Навигация ---------- */
.main-nav {
	justify-self: center;
	display: flex;
	align-items: center;
	font-family: var(--opus-font-text);
	font-size: 10px;
	font-weight: 500;
	letter-spacing: 0.09em;
	text-transform: uppercase;
}

.main-nav__list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	align-items: center;
	gap: clamp(22px, 2.6vw, 44px);
}

.main-nav__list > li {
	position: relative;
	margin: 0;
}

.main-nav a {
	position: relative;
	color: inherit;
	text-decoration: none;
	white-space: nowrap;
}

.main-nav a:hover,
.main-nav a:focus {
	color: inherit;
}

.main-nav__list > li > a::after,
.main-nav > a::after {
	content: "";
	position: absolute;
	left: 0;
	right: 100%;
	bottom: -8px;
	height: 1px;
	background: var(--opus-gold);
	transition: right 0.3s;
}

.main-nav__list > li > a:hover::after,
.main-nav__list > li > a[aria-current="page"]::after,
.main-nav__list > li.current-menu-item > a::after,
.main-nav__list > li.current-menu-ancestor > a::after,
.main-nav > a:hover::after,
.main-nav > a[aria-current="page"]::after {
	right: 0;
}

/* Выпадающее подменю второго уровня на десктопе */
@media (min-width: 901px) {
	.main-nav__list .sub-menu {
		list-style: none;
		margin: 0;
		padding: 14px 18px;
		position: absolute;
		left: -18px;
		top: calc(100% + 14px);
		min-width: 210px;
		background: var(--opus-ivory);
		color: var(--opus-ink);
		border: 1px solid rgba(var(--opus-ink-rgb), 0.16);
		box-shadow: 0 16px 36px rgba(var(--opus-deep-rgb), 0.14);
		display: grid;
		gap: 10px;
		opacity: 0;
		visibility: hidden;
		transform: translateY(6px);
		transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
		z-index: 60;
	}

	.site-header--dark .main-nav__list .sub-menu {
		background: var(--opus-deep);
		color: var(--opus-ivory);
		border-color: rgba(var(--opus-ivory-rgb), 0.16);
	}

	.main-nav__list > li::before {
		content: "";
		position: absolute;
		left: 0;
		right: 0;
		top: 100%;
		height: 16px;
	}

	.main-nav__list > li:hover > .sub-menu,
	.main-nav__list > li:focus-within > .sub-menu {
		opacity: 1;
		visibility: visible;
		transform: translateY(0);
	}

	.main-nav__list .sub-menu a {
		display: block;
		padding: 3px 0;
		font-size: 10px;
		letter-spacing: 0.08em;
		opacity: 0.82;
		transition: opacity 0.2s, color 0.2s;
	}

	.main-nav__list .sub-menu a:hover,
	.main-nav__list .sub-menu a[aria-current="page"] {
		opacity: 1;
		color: var(--opus-gold);
	}
}

/* ---------- Правый блок действий ---------- */
.header-actions {
	display: flex;
	gap: 24px;
	align-items: center;
	font-family: var(--opus-font-text);
	font-size: 10px;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	white-space:nowrap;
}

.header-actions a {
	color: inherit;
	text-decoration: none;
}

.header-actions a:hover,
.header-actions a:focus {
	color: var(--opus-gold);
}

.header-actions .request-link {
	display: flex;
	align-items: center;
	gap: 8px;
}

.request-count {
	display: grid;
	place-items: center;
	min-width: 20px;
	height: 20px;
	padding: 0 5px;
	border: 1px solid currentColor;
	border-radius: 50%;
	background: transparent;
	color: inherit;
	font: 500 9px/1 var(--opus-font-text);
}

.site-header .menu-toggle {
	min-height: 44px;
	min-width: 44px;
	line-height: 1.2;
	display: none;
	padding: 6px 0;
	border: 0;
	background: none;
	color: inherit;
	font-family: var(--opus-font-text);
	font-size: 9px;
	font-weight: 600;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	cursor: pointer;
}

.menu-toggle:hover,
.menu-toggle:focus {
	background: none;
	border: 0;
	color: var(--opus-gold);
}

/* ---------- Адаптив шапки ---------- */
@media (max-width: 1180px) {
	.site-header__in {
		grid-template-columns: 120px 1fr auto;
	}
	.main-nav__list {
		gap: 20px;
	}
	.header-actions {
		gap: 15px;
	}
	.header-actions__catalog {
		display: none;
	}
}

@media (max-width: 900px) {
	.utility-bar__right span:first-child {
		display: none;
	}
	.site-header__in {
		height: 75px;
		grid-template-columns: minmax(0, 1fr) auto;
	}
	.brand {
		width: 90px;
	}
	.main-nav {
		display: none;
	}
	.header-actions .request-link {
		font-size: 0;
		gap: 0;
	}
	.header-actions .request-count {
		font-size: 9px;
	}
	.site-header .menu-toggle {
		display: block;
	}
	header.site-header.site-header--dark .main-nav.is-open a {
		color: var(--opus-ink);
	}
	.header-actions .request-link {
		min-width: 44px;
		min-height: 44px;
		justify-content: center;
	}
	.header-actions .request-link__label {
		font-size: 10px;
	}
	.main-nav.is-open {
		max-height: calc(100dvh - 95px);
		overflow-y: auto;
	}

	.main-nav.is-open {
		position: absolute;
		left: 0;
		right: 0;
		top: 100%;
		display: block;
		padding: 10px var(--pad) 24px;
		background: var(--opus-ivory);
		color: var(--opus-ink);
		border-bottom: 1px solid rgba(var(--opus-ink-rgb), 0.2);
		box-shadow: 0 18px 25px rgba(var(--opus-deep-rgb), 0.08);
	}
	.main-nav.is-open .main-nav__list {
		display: grid;
		gap: 0;
	}
	.main-nav.is-open .main-nav__list > li > a {
		display: block;
		padding: 15px 0;
		border-bottom: 1px solid rgba(var(--opus-ink-rgb), 0.16);
	}
	.main-nav.is-open .main-nav__list > li > a::after {
		display: none;
	}
	.main-nav.is-open .sub-menu {
		list-style: none;
		margin: 0;
		padding: 6px 0 10px 14px;
		display: flex;
		flex-wrap: wrap;
		gap: 8px 16px;
		border-bottom: 1px solid rgba(var(--opus-ink-rgb), 0.12);
	}
	.main-nav.is-open .sub-menu a {
		font-size: 9px;
		color: var(--opus-muted);
	}
}

@media (max-width: 600px) {
	.utility-bar {
		height: 26px;
	}
	.utility-bar .wrap {
		justify-content: center;
	}
	.utility-bar__right {
		display: none;
	}
	.site-header__in {
		height: 68px;
	}
	.header-actions {
		gap: 14px;
	}
}