.site-header {
	position: sticky;
	top: 0;
	z-index: 40;
	backdrop-filter: blur(20px);
	-webkit-backdrop-filter: blur(20px);
}
.header-inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-4);
	padding: var(--space-3) 0;
}
.header-brand {
	flex: 0 0 auto;
}
.brand-link {
	display: inline-flex;
	align-items: center;
	gap: var(--space-3);
	color: var(--color-text);
}
.brand-mark {
	position: relative;
	width: 40px;
	height: 40px;
	border-radius: 999px;
	background:
		radial-gradient(
			circle at 30% 10%,
			rgba(110, 231, 216, 0.65) 0,
			transparent55%
		),
		radial-gradient(
			circle at 80% 80%,
			rgba(46, 155, 255, 0.7) 0,
			transparent55%
		);
	box-shadow: 0 0 18px rgba(46, 155, 255, 0.8);
}
.brand-orbit {
	position: absolute;
	inset: 4px;
	border-radius: 999px;
	border: 1px solid rgba(105, 198, 255, 0.85);
	box-shadow: 0 0 12px rgba(105, 198, 255, 0.85);
}
.brand-core {
	position: absolute;
	top: 50%;
	left: 50%;
	width: 10px;
	height: 10px;
	border-radius: 999px;
	transform: translate(-50%, -50%);
	background: var(--color-accent);
	box-shadow: 0 0 16px rgba(255, 181, 71, 0.9);
}
.brand-text {
	display: flex;
	flex-direction: column;
}
.brand-title {
	font-family: "Rajdhani", var(--font-sans);
	font-weight: 700;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	font-size: 0.95rem;
}
.brand-subtitle {
	font-family: "Space Grotesk", var(--font-sans);
	font-size: 0.75rem;
	color: var(--color-muted);
	letter-spacing: 0.12em;
	text-transform: uppercase;
}
.site-nav {
	flex: 1 1 auto;
	display: flex;
	justify-content: flex-end;
}
.nav-list {
	display: flex;
	align-items: center;
	gap: var(--space-4);
	margin: 0;
	padding: 0;
	list-style: none;
}
.nav-item {
	position: relative;
}
.nav-link {
	position: relative;
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	font-size: 0.85rem;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--color-muted);
	padding: 0.4rem 0;
	transition:
		color var(--transition-base),
		text-shadow var(--transition-base);
}
.nav-link::after {
	content: "";
	position: absolute;
	left: 0;
	bottom: 0;
	width: 0;
	height: 2px;
	border-radius: 999px;
	background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
	box-shadow: 0 0 12px rgba(46, 155, 255, 0.85);
	transition: width var(--transition-base);
}
.nav-link:hover,
.nav-link:focus-visible {
	color: var(--color-text);
}
.nav-link:hover::after,
.nav-link:focus-visible::after {
	width: 100%;
}
.nav-link-accent {
	color: var(--color-heading);
}
.nav-link-accent::before {
	content: "";
	width: 8px;
	height: 8px;
	border-radius: 999px;
	background: var(--color-highlight);
	box-shadow: 0 0 14px rgba(110, 231, 216, 0.9);
	margin-right: 0.25rem;
}
.nav-item-cta {
	margin-left: var(--space-2);
}
.nav-toggle {
	display: none;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	gap: 5px;
	width: 40px;
	height: 40px;
	border-radius: 999px;
	border: 1px solid rgba(50, 64, 95, 0.9);
	background: rgba(15, 23, 42, 0.9);
}
.nav-toggle-bar {
	width: 18px;
	height: 2px;
	border-radius: 999px;
	background: var(--color-text);
	transition:
		transform var(--transition-base),
		opacity var(--transition-base),
		background var(--transition-base);
}
.nav-toggle.is-active .nav-toggle-bar:nth-child(1) {
	transform: translateY(7px) rotate(45deg);
}
.nav-toggle.is-active .nav-toggle-bar:nth-child(2) {
	opacity: 0;
}
.nav-toggle.is-active .nav-toggle-bar:nth-child(3) {
	transform: translateY(-7px) rotate(-45deg);
}
.nav-toggle:focus-visible {
	outline: 2px solid var(--color-accent);
	outline-offset: 3px;
}
.nav-list[data-nav-collapsible="true"] {
	transition:
		max-height var(--transition-slow),
		opacity var(--transition-slow),
		transform var(--transition-slow);
}
@media (max-width: 900px) {
	.header-inner {
		padding-block: var(--space-2);
	}

	.site-nav {
		position: absolute;
		inset-inline: 0;
		top: 100%;
		padding-inline: var(--space-4);
		pointer-events: none;
	}

	.nav-list {
		position: relative;
		display: flex;
		flex-direction: column;
		align-items: flex-start;

		/* Чорний фон */
		background: #000;

		border-radius: 0 0 var(--radius-xl) var(--radius-xl);
		border: 1px solid rgba(255, 255, 255, 0.08);
		border-top: none;

		box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);

		max-height: 0;
		overflow: hidden;
		opacity: 0;
		transform: translateY(-6px);

		transition:
			max-height .35s ease,
			opacity .25s ease,
			transform .25s ease;
	}

	.nav-list.is-open {
		max-height: 420px;
		opacity: 1;
        width: 100%;
		transform: translateY(0);
		pointer-events: auto;
	}

	.nav-item {
		width: 100%;
	}

	.nav-link {
		display: block;
		width: 100%;
		padding: var(--space-3) var(--space-4);

		/* Білий текст */
		color: #fff !important;
	}

	.nav-link:hover,
	.nav-link:focus {
		color: #fff !important;
		background: rgba(255, 255, 255, 0.08);
	}

	.nav-link::after {
		left: var(--space-4);
		background: #fff;
	}

	.nav-item-cta {
		width: 100%;
		margin: 0;
		padding: var(--space-3) var(--space-4) var(--space-4);
	}

	.nav-toggle {
		display: inline-flex;
		margin-left: auto;
	}

	.site-nav[data-menu-open="true"] {
		pointer-events: auto;
	}
}
@media (max-width: 480px) {
	.brand-subtitle {
		display: none;
	}
	.brand-title {
		font-size: 0.9rem;
	}
}