/* ==========================================================================
   Site header / nav
   ========================================================================== */
.site-header {
	position: sticky;
	top: 0;
	z-index: 100;
	background: rgba(255, 255, 255, 0.92);
	backdrop-filter: saturate(180%) blur(10px);
	border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-6);
	padding-block: var(--space-3);
}

.site-logo {
	display: flex;
	align-items: center;
	gap: var(--space-2);
	font-weight: 800;
	font-size: var(--fs-lg);
	color: var(--color-primary-dark);
	flex-shrink: 0;
}

.site-logo__mark {
	width: 28px;
	height: 28px;
	flex-shrink: 0;
}

.primary-nav {
	display: flex;
	align-items: center;
	gap: var(--space-6);
}

.primary-nav ul {
	display: flex;
	align-items: center;
	gap: var(--space-6);
	list-style: none;
	padding: 0;
	margin: 0;
}

.primary-nav a {
	font-size: var(--fs-sm);
	font-weight: 600;
	color: var(--color-text);
	padding-block: var(--space-2);
}

.primary-nav a:hover {
	color: var(--color-primary);
}

.primary-nav .menu-item-has-children {
	position: relative;
}

.primary-nav .menu-item-has-children > a::after {
	content: "";
	display: inline-block;
	width: 6px;
	height: 6px;
	margin-left: 6px;
	border-right: 1.5px solid currentColor;
	border-bottom: 1.5px solid currentColor;
	transform: translateY(-3px) rotate(45deg);
}

.primary-nav .sub-menu {
	display: none;
	position: absolute;
	top: 100%;
	left: 50%;
	transform: translateX(-50%);
	flex-direction: column;
	align-items: stretch;
	gap: 0;
	min-width: 280px;
	background: var(--white);
	border: 1px solid var(--color-border);
	border-radius: var(--radius-md);
	box-shadow: var(--shadow-lg);
	padding: var(--space-2);
}

.primary-nav .menu-item-has-children:hover .sub-menu,
.primary-nav .menu-item-has-children:focus-within .sub-menu {
	display: flex;
}

.primary-nav .sub-menu a {
	display: block;
	width: 100%;
	text-align: left;
	padding: var(--space-2) var(--space-3);
	border-radius: var(--radius-sm);
}

.primary-nav .sub-menu a:hover {
	background: var(--color-bg-alt);
}

.header-actions {
	display: flex;
	align-items: center;
	gap: var(--space-4);
	flex-shrink: 0;
}

.nav-toggle {
	display: none;
	background: none;
	border: none;
	cursor: pointer;
	padding: var(--space-2);
}

.nav-toggle__bar,
.nav-toggle__bar::before,
.nav-toggle__bar::after {
	display: block;
	width: 22px;
	height: 2px;
	background: var(--color-text);
	position: relative;
	transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle__bar::before,
.nav-toggle__bar::after {
	content: "";
	position: absolute;
	left: 0;
}

.nav-toggle__bar::before {
	top: -7px;
}
.nav-toggle__bar::after {
	top: 7px;
}

@media (max-width: 900px) {
	.nav-toggle {
		display: block;
	}

	.primary-nav {
		position: fixed;
		inset: 0;
		top: 61px;
		background: var(--white);
		flex-direction: column;
		align-items: flex-start;
		padding: var(--space-6) var(--container-pad);
		transform: translateX(100%);
		transition: transform 0.25s ease;
		overflow-y: auto;
	}

	.primary-nav ul {
		flex-direction: column;
		align-items: flex-start;
		gap: var(--space-1);
		width: 100%;
	}

	.primary-nav a {
		display: block;
		width: 100%;
		padding: var(--space-3) 0;
	}

	.primary-nav .sub-menu {
		position: static;
		transform: none;
		display: flex;
		box-shadow: none;
		border: none;
		padding-left: var(--space-4);
		min-width: 0;
	}

	.site-header.is-nav-open .primary-nav {
		transform: translateX(0);
	}

	.header-actions .btn {
		display: none;
	}

	.site-header.is-nav-open .header-actions .btn {
		display: none;
	}
}

/* ==========================================================================
   Grid / section layout helpers
   ========================================================================== */
.grid {
	display: grid;
	gap: var(--space-6);
}

.grid--2 {
	grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
	grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
	grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 900px) {
	.grid--3,
	.grid--4 {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 600px) {
	.grid--2,
	.grid--3,
	.grid--4 {
		grid-template-columns: 1fr;
	}
}

.split {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: var(--space-10);
	align-items: center;
}

.split--reverse .split__visual {
	order: 2;
}

@media (max-width: 900px) {
	.split {
		grid-template-columns: 1fr;
		gap: var(--space-6);
	}
	.split--reverse .split__visual {
		order: 0;
	}
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
	background: var(--color-inverse-bg);
	color: var(--color-inverse-text);
	padding-block: var(--space-10) var(--space-6);
}

.site-footer a {
	color: var(--color-inverse-text-muted);
}

.site-footer a:hover {
	color: var(--color-inverse-text);
}

.footer-grid {
	display: grid;
	grid-template-columns: 1.4fr repeat(3, 1fr);
	gap: var(--space-8);
	padding-bottom: var(--space-8);
	border-bottom: 1px solid var(--color-inverse-border);
}

@media (max-width: 900px) {
	.footer-grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 600px) {
	.footer-grid {
		grid-template-columns: 1fr;
		gap: var(--space-6);
	}
}

.footer-brand p {
	color: var(--color-inverse-text-muted);
	margin-top: var(--space-3);
	max-width: 32ch;
}

.footer-heading {
	font-size: var(--fs-xs);
	font-weight: 700;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--color-inverse-text-muted);
	margin-bottom: var(--space-4);
}

.footer-links {
	list-style: none;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: var(--space-2);
}

.footer-bottom {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-4);
	padding-top: var(--space-6);
	font-size: var(--fs-xs);
	color: var(--color-inverse-text-muted);
	flex-wrap: wrap;
}