/* HPHT — header.css: site header / primary nav with dropdowns + mobile drawer. */

.site-header {
	background: var(--c-surface);
	position: sticky;
	top: 0;
	z-index: 100;
	transition: box-shadow var(--motion) var(--ease-out);
}
.site-header.is-scrolled {
	box-shadow: 0 1px 6px rgba(0, 0, 0, 0.08);
}
.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-5);
	padding-block: var(--space-3);
}

/* ───── branding ───── */
.site-branding {
	display: flex;
	align-items: center;
	gap: var(--space-3);
}
.site-branding .custom-logo-link img,
.site-branding .custom-logo,
.site-branding img {
	max-height: 64px;
	width: auto;
}
.site-branding .site-title {
	font-family: var(--ff-display);
	font-weight: 600;
	font-size: 1.25rem;
	color: var(--c-ink);
}

/* ───── primary menu ───── */
.site-nav { position: relative; }

.site-nav__menu {
	display: flex;
	align-items: center;
	gap: var(--space-5);
	margin: 0;
	padding: 0;
	list-style: none;
}
.site-nav__menu > li {
	position: relative;
}
.site-nav__menu a {
	display: inline-flex;
	align-items: center;
	gap: var(--space-1);
	color: var(--c-ink);
	font-weight: 600;
	font-size: 1rem;
	letter-spacing: 0.01em;
	padding-block: var(--space-3);
	border-bottom: 2px solid transparent;
	transition: color 0.15s ease, border-color 0.15s ease;
}
.site-nav__menu a:hover,
.site-nav__menu .current-menu-item > a,
.site-nav__menu .current-menu-parent > a,
.site-nav__menu .current-menu-ancestor > a {
	color: var(--c-primary);
	border-bottom-color: var(--c-primary);
}

/* down-caret for items with children */
.site-nav__menu .has-children > a::after {
	content: "";
	display: inline-block;
	width: 8px;
	height: 8px;
	margin-left: var(--space-1);
	border-right: 2px solid currentColor;
	border-bottom: 2px solid currentColor;
	transform: rotate(45deg) translateY(-2px);
}

/* dropdown */
.site-nav__menu .sub-menu {
	position: absolute;
	top: calc(100% + 2px);
	left: 0;
	min-width: 240px;
	margin: 0;
	padding: var(--space-2) 0;
	list-style: none;
	background: var(--c-surface);
	border: 1px solid var(--c-border);
	border-radius: var(--radius-md);
	box-shadow: var(--shadow-md);
	opacity: 0;
	visibility: hidden;
	transform: translateY(4px);
	transition: opacity 0.12s ease, visibility 0.12s ease, transform 0.12s ease;
	z-index: 10;
}
.site-nav__menu li:hover > .sub-menu,
.site-nav__menu li:focus-within > .sub-menu {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}
.site-nav__menu .sub-menu a {
	display: block;
	padding: var(--space-2) var(--space-4);
	border-bottom: 0;
	font-weight: 400;
	white-space: nowrap;
}
.site-nav__menu .sub-menu a:hover {
	background: #f3f4ec;
	color: var(--c-primary);
}
/* nested sub-menus */
.site-nav__menu .sub-menu .sub-menu {
	top: 0;
	left: 100%;
	margin-left: 4px;
}

/* ───── mobile toggle (hamburger) ───── */
.site-nav__toggle {
	display: none;
	background: transparent;
	border: 0;
	padding: var(--space-2);
	color: var(--c-ink);
}
.site-nav__toggle-bars {
	display: inline-block;
	width: 24px;
	height: 18px;
	position: relative;
}
.site-nav__toggle-bars span {
	position: absolute;
	left: 0;
	width: 100%;
	height: 2px;
	background: currentColor;
	border-radius: 1px;
	transition: transform 0.15s ease, opacity 0.15s ease;
}
.site-nav__toggle-bars span:nth-child(1) { top: 0; }
.site-nav__toggle-bars span:nth-child(2) { top: 8px; }
.site-nav__toggle-bars span:nth-child(3) { top: 16px; }
.site-nav.is-open .site-nav__toggle-bars span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.site-nav.is-open .site-nav__toggle-bars span:nth-child(2) { opacity: 0; }
.site-nav.is-open .site-nav__toggle-bars span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ───── mobile drawer ───── */
@media (max-width: 900px) {
	.site-nav__toggle { display: inline-flex; }

	.site-nav__menu {
		display: none;
		position: fixed;
		inset: 0;
		flex-direction: column;
		gap: 0;
		background: var(--c-surface);
		padding: calc(var(--space-10) + var(--space-3)) var(--container-pad) var(--space-6);
		overflow-y: auto;
		z-index: 90;
	}
	.site-nav.is-open .site-nav__menu { display: flex; }

	.site-nav__menu a {
		width: 100%;
		padding-block: var(--space-4);
		border-bottom: 1px solid var(--c-border);
	}

	.site-nav__menu .sub-menu {
		position: static;
		opacity: 1;
		visibility: visible;
		transform: none;
		box-shadow: none;
		border: 0;
		border-left: 2px solid var(--c-accent);
		padding-left: var(--space-4);
		margin-left: var(--space-2);
		min-width: 0;
		background: transparent;
	}
	.site-nav__menu .sub-menu a { padding-block: var(--space-3); }

	.site-nav__menu .has-children > a::after { margin-left: auto; }
}

/* ───── shrink-on-scroll polish (optional, kept subtle) ───── */
.site-header.is-scrolled {
	box-shadow: var(--shadow-sm);
}