/* ============================================================
   header.css — Site header & primary navigation
   Corresponds to: header.php
   ============================================================ */

.site-header {
	position: sticky;
	top: 0;
	z-index: 100;
	background: rgba(255,255,255,0.85);
	backdrop-filter: saturate(180%) blur(14px);
	-webkit-backdrop-filter: saturate(180%) blur(14px);
	border-bottom: 1px solid var(--line);
}
.site-header-inner {
	max-width: var(--container);
	margin: 0 auto;
	padding: 0 24px;
	height: var(--header-h);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 20px;
}
.site-header-left { display: flex; align-items: center; gap: 14px; }
.site-branding { display: flex; align-items: center; }
.site-logo-text, .footer-logo-text {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	font-family: var(--font-display);
	font-weight: 800;
	font-size: 19px;
	color: var(--ink) !important;
	letter-spacing: -0.02em;
}
.site-logo-text:hover, .footer-logo-text:hover { color: var(--brand) !important; }
.logo-mark { color: var(--brand); display: inline-flex; }

/* Primary menu */
.main-navigation { flex: 1; display: flex; justify-content: center; }
.primary-menu {
	display: flex;
	align-items: center;
	gap: 4px;
	list-style: none;
	margin: 0; padding: 0;
}
.primary-menu li a {
	display: block;
	padding: 8px 14px;
	font-size: 14.5px;
	font-weight: 500;
	color: var(--ink-2);
	border-radius: var(--radius-sm);
}
.primary-menu li a:hover { color: var(--brand); background: var(--brand-soft); }

.site-header-right { display: flex; align-items: center; gap: 10px; }
.header-search-toggle {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 38px; height: 38px;
	background: transparent;
	border: 1px solid var(--line);
	border-radius: var(--radius-sm);
	color: var(--muted);
	transition: all .15s ease;
}
.header-search-toggle:hover { color: var(--brand); border-color: var(--brand); }
.header-search-form {
	display: flex;
	align-items: center;
}
.header-search-field {
	padding: 8px 14px;
	border: 1px solid var(--line);
	border-radius: var(--radius-sm);
	font-size: 14px;
	width: 220px;
	outline: none;
	transition: border-color .15s ease;
}
.header-search-field:focus { border-color: var(--brand); }
.header-submit-btn {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	background: var(--brand);
	color: #fff !important;
	font-weight: 600;
	font-size: 14px;
	padding: 9px 18px;
	border-radius: var(--radius-sm);
	transition: background .15s ease, transform .15s ease;
}
.header-submit-btn:hover { background: var(--brand-dark); transform: translateY(-1px); }

/* Mobile menu toggle */
.menu-toggle {
	display: none;
	flex-direction: column;
	justify-content: center;
	gap: 4px;
	width: 38px; height: 38px;
	background: transparent;
	border: 1px solid var(--line);
	border-radius: var(--radius-sm);
	padding: 0;
}
.menu-toggle-bar {
	width: 18px; height: 2px;
	background: var(--ink);
	margin: 0 auto;
	border-radius: 2px;
	transition: all .2s ease;
}
.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Mobile menu panel */
.mobile-menu {
	display: none;
	position: fixed;
	top: var(--header-h); left: 0; right: 0;
	background: #fff;
	border-bottom: 1px solid var(--line);
	padding: 16px 24px 24px;
	z-index: 99;
	box-shadow: var(--shadow-md);
}
.mobile-menu.open { display: block; }
.mobile-menu-list { list-style: none; margin: 0 0 16px; padding: 0; }
.mobile-menu-list li a {
	display: block;
	padding: 12px 4px;
	font-size: 16px;
	font-weight: 500;
	color: var(--ink);
	border-bottom: 1px solid var(--line-2);
}
.mobile-submit-btn {
	display: block;
	text-align: center;
	background: var(--brand);
	color: #fff !important;
	font-weight: 600;
	padding: 12px;
	border-radius: var(--radius-sm);
}

/* ---------- Header responsive ---------- */
@media (max-width: 900px) {
	.menu-toggle { display: flex; }
	.main-navigation { display: none; }
	.site-header-right .header-search-toggle,
	.site-header-right .header-search-form { display: none; }
}
@media (max-width: 640px) {
	.site-header-inner { padding: 0 16px; }
}