/* 'Delta OK' OLGA KAMROWSKA Header Styles */

.lv-header {
	position: sticky;
	top: 0;
	z-index: 40;
	background: linear-gradient(
		to bottom,
		rgba(0, 0, 0, 0.96),
		rgba(0, 0, 0, 0.88)
	);
	backdrop-filter: blur(18px);
	border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.lv-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding-block: var(--space-3);
}

/* Skip link */
.lv-skip-link {
	position: absolute;
	left: 50%;
	transform: translateX(-50%);
	top: -40px;
	padding: 0.5rem 1rem;
	background-color: #000;
	color: var(--color-text-on-dark);
	border-radius: var(--radius-pill);
	box-shadow: var(--shadow-soft);
	z-index: 50;
}

.lv-skip-link:focus-visible {
	top: var(--space-3);
}

/* Brand / Logo */
.lv-header__brand {
	display: flex;
	align-items: center;
}

.lv-header__logo {
	display: inline-flex;
	align-items: center;
	gap: var(--space-3);
	color: var(--color-text-on-dark);
}

.lv-header__logo-mark {
	width: 36px;
	height: 36px;
	border-radius: 40% 60% 55% 45%;
	background: radial-gradient(
		circle at 30% 20%,
		#fff8e5 0,
		#f3d7a2 32%,
		#c8a45a 60%,
		#1b2a41 100%
	);
	box-shadow:
		0 0 0 1px rgba(255, 255, 255, 0.12),
		0 12px 30px rgba(0, 0, 0, 0.6);
	position: relative;
	overflow: hidden;
}

.lv-header__logo-mark::after {
	content: "";
	position: absolute;
	inset: 15%;
	border-radius: inherit;
	background: radial-gradient(
		circle at 20% 0%,
		rgba(255, 255, 255, 0.9),
		transparent 55%
	);
	mix-blend-mode: screen;
}

.lv-header__logo-text {
	display: flex;
	flex-direction: column;
	line-height: 1.1;
}

.lv-header__logo-title {
	font-family: var(--font-serif);
	font-size: var(--font-size-lg);
	letter-spacing: 0.06em;
	text-transform: uppercase;
}

.lv-header__logo-subtitle {
	font-size: var(--font-size-xs);
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: rgba(245, 241, 232, 0.72);
}

/* Navigation */
.lv-header__nav {
	display: flex;
	align-items: center;
}

.lv-header__nav-list {
	display: flex;
	align-items: center;
	gap: var(--space-5);
}

.lv-header__nav-link {
	position: relative;
	font-size: var(--font-size-sm);
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: rgba(245, 241, 232, 0.82);
	padding-block: 0.35rem;
}

.lv-header__nav-link::after {
	content: "";
	position: absolute;
	left: 0;
	bottom: -4px;
	width: 0;
	height: 2px;
	background: linear-gradient(
		90deg,
		var(--color-primary),
		var(--color-accent-emerald)
	);
	transition: width var(--transition-normal);
}

.lv-header__nav-link:hover::after,
.lv-header__nav-link:focus-visible::after {
	width: 100%;
}

.lv-header__nav-item--highlight .lv-header__cta {
	font-size: var(--font-size-xs);
	padding-inline: var(--space-4);
	padding-block: var(--space-2);
}

/* Mobile toggle */
.lv-header__toggle {
	display: none;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	gap: 5px;
	width: 44px;
	height: 44px;
	border-radius: 999px;
	border: 1px solid rgba(255, 255, 255, 0.16);
	background:
		radial-gradient(
			circle at 30% 0%,
			rgba(200, 164, 90, 0.18),
			transparent 55%
		),
		rgba(0, 0, 0, 0.7);
	color: var(--color-text-on-dark);
}

.lv-header__toggle-bar {
	width: 18px;
	height: 2px;
	border-radius: 999px;
	background-color: var(--color-text-on-dark);
	transition:
		transform var(--transition-normal),
		opacity var(--transition-normal);
}

/* Mobile state */
@media (max-width: 880px) {
	.lv-header__toggle {
		display: inline-flex;
		z-index: 101;
	}

	.lv-header__nav {
		position: fixed;
		top: 72px;
		left: 16px;
		right: 16px;

		background:
			radial-gradient(circle at top, rgba(200, 164, 90, 0.15), transparent 60%),
			rgba(5, 6, 9, 0.98);

		backdrop-filter: blur(20px);

		border: 1px solid rgba(255, 255, 255, 0.08);
		border-radius: 20px;

		box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);

		transform: translateY(-20px);
		opacity: 0;
		visibility: hidden;
		pointer-events: none;

		transition:
			transform 0.3s ease,
			opacity 0.3s ease,
			visibility 0.3s ease;

		z-index: 100;
	}

	.lv-header--nav-open .lv-header__nav {
		transform: translateY(0);
		opacity: 1;
		visibility: visible;
		pointer-events: auto;
	}

	.lv-header__nav-list {
		flex-direction: column;
		align-items: stretch;
		padding: 24px;
		gap: 8px;
	}

	.lv-header__nav-link {
		display: block;
		width: 100%;
		padding: 14px 16px;
		border-radius: 12px;
	}

	.lv-header__nav-link:hover {
		background: rgba(255, 255, 255, 0.05);
	}
}

/* Medium screens refine spacing */
@media (max-width: 1160px) and (min-width: 881px) {
	.lv-header__nav-list {
		gap: var(--space-4);
	}

	.lv-header__logo-title {
		font-size: 1rem;
	}
}