/* Header styles for ZAKŁAD USŁUGOWY 'TEG Design' TOMASZ BERGER */

.cns-header {
	position: sticky;
	top: 0;
	z-index: 40;
	background: linear-gradient(
		to bottom,
		rgba(5, 5, 9, 0.96),
		rgba(5, 5, 9, 0.9)
	);
	backdrop-filter: blur(18px);
	border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.cns-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding-top: var(--space-3);
	padding-bottom: var(--space-3);
	gap: var(--space-4);
}

/* Brand */

.cns-header__brand {
	display: flex;
	align-items: center;
}

.cns-header__logo-link {
	display: inline-flex;
	align-items: center;
	gap: var(--space-3);
}

.cns-header__logo-mark {
	width: 40px;
	height: 40px;
	border-radius: 999px;
	border: 1px solid rgba(216, 166, 67, 0.7);
	display: flex;
	align-items: center;
	justify-content: center;
	background:
		radial-gradient(circle at 30% 0%, rgba(216, 166, 67, 0.6), transparent 60%),
		radial-gradient(
			circle at 70% 100%,
			rgba(39, 75, 143, 0.5),
			transparent 55%
		),
		#050509;
	box-shadow: var(--shadow-soft);
}

.cns-header__logo-symbol {
	width: 22px;
	height: 22px;
	border-radius: 50%;
	border: 1px solid rgba(246, 241, 232, 0.2);
	display: flex;
	align-items: center;
	justify-content: center;
}

.cns-header__logo-symbol-inner {
	width: 10px;
	height: 10px;
	border-radius: 50%;
	background: linear-gradient(135deg, var(--color-primary-strong), #b67b17);
}

.cns-header__brand-text {
	display: flex;
	flex-direction: column;
	line-height: 1.1;
}

.cns-header__site-name {
	font-family: var(--font-display);
	font-size: var(--font-size-lg);
	letter-spacing: 0.06em;
	text-transform: uppercase;
}

.cns-header__site-tagline {
	font-size: var(--font-size-xs);
	color: var(--color-text-muted);
	letter-spacing: 0.18em;
	text-transform: uppercase;
}

/* Navigation */

.cns-header__nav {
	display: flex;
	align-items: center;
}

.cns-header__nav-list {
	display: flex;
	align-items: center;
	gap: var(--space-4);
}

.cns-header__nav-link {
	position: relative;
	font-size: var(--font-size-sm);
	letter-spacing: 0.09em;
	text-transform: uppercase;
	color: var(--color-text-muted);
	padding-block: 0.25rem;
}

.cns-header__nav-link::after {
	content: "";
	position: absolute;
	left: 0;
	right: 0;
	bottom: -0.35rem;
	height: 2px;
	border-radius: 999px;
	background: linear-gradient(
		90deg,
		var(--color-primary-strong),
		var(--color-accent-royal)
	);
	transform: scaleX(0);
	transform-origin: center;
	transition: transform var(--transition-base);
}

.cns-header__nav-link:hover,
.cns-header__nav-link:focus-visible {
	color: var(--color-text);
}

.cns-header__nav-link:hover::after,
.cns-header__nav-link:focus-visible::after {
	transform: scaleX(1);
}

.cns-header__nav-link--highlight {
	padding: 0.45rem 1rem;
	border-radius: var(--radius-full);
	border: 1px solid rgba(216, 166, 67, 0.7);
	background: radial-gradient(
		circle at top left,
		rgba(216, 166, 67, 0.22),
		transparent 55%
	);
}

.cns-header__nav-link--highlight::after {
	display: none;
}

.cns-header__nav-link--highlight:hover,
.cns-header__nav-link--highlight:focus-visible {
	background: radial-gradient(
		circle at top left,
		rgba(216, 166, 67, 0.36),
		transparent 60%
	);
}

/* Toggle (mobile menu button) */

.cns-header__toggle {
	display: none;
	align-items: center;
	gap: var(--space-2);
	color: var(--color-text);
}

.cns-header__toggle-box {
	width: 32px;
	height: 24px;
	position: relative;
}

.cns-header__toggle-line {
	position: absolute;
	left: 0;
	right: 0;
	height: 2px;
	border-radius: 999px;
	background-color: var(--color-text);
	transition:
		transform var(--transition-base),
		opacity var(--transition-base),
		top var(--transition-base),
		bottom var(--transition-base);
}

.cns-header__toggle-line--top {
	top: 2px;
}

.cns-header__toggle-line--middle {
	top: 11px;
}

.cns-header__toggle-line--bottom {
	bottom: 2px;
}

.cns-header__toggle-text {
	font-size: var(--font-size-xs);
	letter-spacing: 0.18em;
	text-transform: uppercase;
}

/* Mobile layout */

@media (max-width: 900px) {
	.cns-header__inner {
		padding-top: var(--space-3);
		padding-bottom: var(--space-3);
	}

	.cns-header__toggle {
		display: inline-flex;
	}

	.cns-header__nav {
		position: fixed;
		inset-inline: 0;
		top: 56px;
		background: rgba(5, 5, 9, 0.98);
		backdrop-filter: blur(22px);
		border-bottom: 1px solid rgba(255, 255, 255, 0.06);
		transform: translateY(-120%);
		opacity: 0;
		pointer-events: none;
		transition:
			transform var(--transition-base),
			opacity var(--transition-base);
	}

	.cns-header__nav-list {
		flex-direction: column;
		align-items: flex-start;
		padding: var(--space-4) var(--space-4) var(--space-6);
		gap: var(--space-3);
	}

	.cns-header__nav-link,
	.cns-header__nav-link--highlight {
		width: 100%;
	}

	.cns-header--menu-open .cns-header__nav {
		transform: translateY(0);
		opacity: 1;
		pointer-events: auto;
	}

	.cns-header--menu-open .cns-header__toggle-line--top {
		top: 11px;
		transform: rotate(45deg);
	}

	.cns-header--menu-open .cns-header__toggle-line--middle {
		opacity: 0;
	}

	.cns-header--menu-open .cns-header__toggle-line--bottom {
		bottom: 11px;
		transform: rotate(-45deg);
	}
}

/* Respect users without JS: show nav by default, JS adds class to enable transitions */

.cns-header--enhanced .cns-header__nav {
	/* Only apply transform/opacity behavior when JS enhances the header */
}