/* Two-Tier Header Architecture with FEB UNAIR Inspired Flat Dropdown Sub-Menu & Multi-Level Flyout */

/* WordPress Admin Bar Top Offset Safeguards */
body.admin-bar .main-header {
	top: 32px;
}
@media screen and (max-width: 782px) {
	body.admin-bar .main-header {
		top: 46px;
	}
}

body.admin-bar .main-header.is-scrolled,
body.admin-bar .main-header.is-sticky {
	top: 32px;
}
@media screen and (max-width: 782px) {
	body.admin-bar .main-header.is-scrolled,
	body.admin-bar .main-header.is-sticky {
		top: 46px;
	}
}

/* Top Bar */
.top-bar {
	height: 40px;
	background-color: var(--color-primary-dark);
	color: var(--color-slate-100);
	font-size: 0.85rem;
}

.top-bar .container {
	display: flex;
	justify-content: space-between;
	align-items: center;
	height: 100%;
}

.top-bar-links {
	display: flex;
	gap: var(--space-6);
	list-style: none;
}

.top-bar-links a {
	color: var(--color-slate-200);
	transition: color var(--transition-fast);
}

.top-bar-links a:hover,
.top-bar-links a:focus {
	color: var(--color-gold);
}

.top-bar-social {
	display: flex;
	gap: var(--space-4);
}

.top-bar-social a {
	color: var(--color-slate-200);
	transition: color var(--transition-fast);
}

.top-bar-social a:hover,
.top-bar-social a:focus {
	color: var(--color-gold);
}

/* Main Header */
.main-header {
	height: 84px;
	min-height: 84px;
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	z-index: 1000;
	background: linear-gradient(180deg, rgba(15, 23, 42, 0.85) 0%, rgba(15, 23, 42, 0.55) 100%);
	backdrop-filter: blur(12px);
	-webkit-backdrop-filter: blur(12px);
	border-bottom: 1px solid rgba(255, 255, 255, 0.15);
	transition: background-color 0.3s ease, top 0.3s ease, box-shadow 0.3s ease;
	display: flex;
	align-items: center;
}

.main-header.is-scrolled,
.main-header.is-sticky {
	position: fixed;
	background-color: rgba(76, 29, 149, 0.96);
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
	border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.main-header .container {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: 100%;
	width: 100%;
}

.site-brand {
	display: flex;
	align-items: center;
	gap: 14px;
	text-decoration: none;
	flex-shrink: 0;
	padding: 4px 0;
}

.site-brand-logo,
.custom-logo {
	height: 48px;
	width: auto;
	max-height: 48px;
	object-fit: contain;
	display: block;
	filter: drop-shadow(0 2px 5px rgba(0,0,0,0.3));
}

.site-brand-text {
	display: flex;
	flex-direction: column;
	justify-content: center;
}

.site-name {
	font-weight: 800;
	font-size: 1.1rem;
	color: #FFFFFF;
	line-height: 1.2;
	letter-spacing: -0.01em;
	text-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

.site-name-full {
	display: block;
}

.site-name-short {
	display: none;
}

.site-tagline {
	font-size: 0.725rem;
	color: var(--color-gold, #f59e0b);
	line-height: 1.2;
	margin-top: 2px;
	font-weight: 600;
	letter-spacing: 0.02em;
}

/* Primary Navigation Styling (FEB UNAIR Inspired - Compact Academic Typography) */
.main-navigation {
	display: flex;
	align-items: center;
	height: 100%;
}

.main-navigation > ul,
.main-navigation > div > ul {
	display: flex;
	align-items: center;
	gap: 2px;
	list-style: none;
	margin: 0;
	padding: 0;
	height: 100%;
}

.main-navigation > ul > li,
.main-navigation > div > ul > li {
	position: relative;
	display: flex;
	align-items: center;
	height: 100%;
}

/* Top-level Menu Links (Compact 0.85rem / 13.5px) */
.main-navigation > ul > li > a,
.main-navigation > div > ul > li > a {
	font-weight: 600;
	color: #FFFFFF;
	font-size: 0.85rem;
	padding: 8px 12px;
	display: inline-flex;
	align-items: center;
	gap: 4px;
	text-decoration: none;
	background: transparent !important;
	border-radius: 6px 6px 0 0;
	transition: color 0.2s ease, background-color 0.2s ease;
	text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
	white-space: nowrap;
	position: relative;
	letter-spacing: 0.01em;
}

/* Caret Arrow Indicator for Top-Level items with sub-menus (Points DOWN v) */
.main-navigation > ul > li.menu-item-has-children > a::after,
.main-navigation > div > ul > li.menu-item-has-children > a::after {
	content: '';
	display: inline-block;
	width: 4px;
	height: 4px;
	border-right: 1.5px solid currentColor;
	border-bottom: 1.5px solid currentColor;
	transform: rotate(45deg) translateY(-2px);
	margin-left: 4px;
	transition: transform 0.25s ease;
	opacity: 0.85;
}

.main-navigation > ul > li.menu-item-has-children:hover > a::after,
.main-navigation > div > ul > li.menu-item-has-children:hover > a::after {
	transform: rotate(-135deg) translateY(-2px);
	opacity: 1;
}

/* Hover and Focus on Top-level Links */
.main-navigation > ul > li:hover > a,
.main-navigation > ul > li > a:focus,
.main-navigation > div > ul > li:hover > a,
.main-navigation > div > ul > li > a:focus {
	color: #FFFFFF;
	background-color: rgba(255, 255, 255, 0.14) !important;
}

/* Active Top-level Menu Link */
.main-navigation > ul > li.current-menu-item > a,
.main-navigation > ul > li.current_page_item > a,
.main-navigation > div > ul > li.current-menu-item > a {
	color: #FFFFFF;
	font-weight: 700;
	background-color: rgba(255, 255, 255, 0.18) !important;
}

.main-navigation > ul > li.current-menu-item > a::after,
.main-navigation > ul > li.current_page_item > a::after,
.main-navigation > div > ul > li.current-menu-item > a::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 10px;
	right: 10px;
	height: 3px;
	background-color: var(--color-gold, #f59e0b);
	border-radius: 2px 2px 0 0;
}

/* Level 1 Sub-Menu Dropdown (Opens DOWN below Top Item) */
.main-navigation .sub-menu {
	position: absolute;
	top: 100%;
	left: 0;
	min-width: 230px;
	background-color: #FFFFFF;
	border-top: 3px solid var(--color-gold, #f59e0b);
	border-radius: 0 0 8px 8px;
	box-shadow: 0 16px 36px -6px rgba(15, 23, 42, 0.18), 0 4px 12px -2px rgba(15, 23, 42, 0.08);
	padding: 6px 0;
	margin: 0;
	list-style: none;
	display: flex;
	flex-direction: column;
	gap: 0;
	opacity: 0;
	visibility: hidden;
	transform: translateY(8px);
	transition: opacity 0.22s cubic-bezier(0.16, 1, 0.3, 1), transform 0.22s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.22s;
	z-index: 1010;
}

.main-navigation > ul > li:hover > .sub-menu,
.main-navigation > div > ul > li:hover > .sub-menu,
.main-navigation > ul > li:focus-within > .sub-menu,
.main-navigation > div > ul > li:focus-within > .sub-menu {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}

.main-navigation .sub-menu li {
	display: block;
	width: 100%;
	margin: 0;
	padding: 0;
	position: relative; /* Enables nested flyout positioning relative to item */
}

.main-navigation .sub-menu a {
	display: flex !important;
	align-items: center !important;
	justify-content: space-between !important;
	padding: 9px 20px !important;
	color: #334155 !important;
	font-weight: 500 !important;
	font-size: 0.875rem !important; /* FEB UNAIR Standard Sub-menu Font Size */
	line-height: 1.4 !important;
	background: transparent !important;
	border-radius: 0 !important;
	text-shadow: none !important;
	white-space: nowrap !important;
	border-bottom: 1px solid rgba(241, 245, 249, 0.8);
	transition: background-color 0.18s ease, color 0.18s ease, padding-left 0.18s ease !important;
}

.main-navigation .sub-menu li:last-child > a {
	border-bottom: none;
}

.main-navigation .sub-menu a:hover,
.main-navigation .sub-menu a:focus {
	color: #6b21a8 !important; /* Theme Primary Accent */
	background-color: #f8f5ff !important;
	padding-left: 24px !important;
	font-weight: 600 !important;
}

/* Caret Arrow for Sub-Menu Items with Children (Points RIGHT >) */
.main-navigation .sub-menu li.menu-item-has-children > a::after {
	content: '';
	display: inline-block;
	width: 5px;
	height: 5px;
	border-top: 1.5px solid currentColor;
	border-right: 1.5px solid currentColor;
	border-bottom: none;
	border-left: none;
	transform: rotate(45deg);
	margin-left: 12px;
	transition: transform 0.25s ease;
	opacity: 0.85;
}

.main-navigation .sub-menu li.menu-item-has-children:hover > a::after {
	transform: rotate(45deg) translateX(3px);
	opacity: 1;
}

/* Level 2+ Nested Sub-Menu Flyout (Opens to the RIGHT >) */
.main-navigation .sub-menu .sub-menu {
	top: -6px;
	left: 100%;
	min-width: 210px;
	border-top: none;
	border-left: 3px solid var(--color-gold, #f59e0b);
	border-radius: 0 8px 8px 8px;
	box-shadow: 6px 16px 36px -4px rgba(15, 23, 42, 0.22), 2px 4px 12px -2px rgba(15, 23, 42, 0.1);
	margin-left: 2px;
	transform: translateX(10px);
	transition: opacity 0.22s cubic-bezier(0.16, 1, 0.3, 1), transform 0.22s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.22s;
	z-index: 1020;
}

.main-navigation .sub-menu li:hover > .sub-menu,
.main-navigation .sub-menu li:focus-within > .sub-menu {
	opacity: 1;
	visibility: visible;
	transform: translateX(0);
}

/* Header Actions */
.header-actions {
	display: flex;
	align-items: center;
	gap: var(--space-3);
}

/* Mobile Menu Toggle Button (Sandwich Icon - Bright High-Contrast) */
.menu-toggle {
	display: none;
	background: rgba(255, 255, 255, 0.12);
	border: 1px solid rgba(255, 255, 255, 0.25);
	border-radius: 8px;
	cursor: pointer;
	padding: 8px 10px;
	transition: all 0.2s ease;
}

.menu-toggle:hover,
.menu-toggle:focus {
	background-color: rgba(255, 255, 255, 0.22);
	border-color: var(--color-gold, #f59e0b);
}

.menu-toggle span {
	display: block;
	width: 22px;
	height: 2.5px;
	background-color: #FFFFFF !important;
	margin: 4px 0;
	border-radius: 2px;
	transition: all 0.25s ease;
	box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.menu-toggle:hover span {
	background-color: var(--color-gold, #f59e0b) !important;
}

/* Mobile Navigation Drawer Styling with Multi-Level Indentation & Thin Gray Dividers */
.mobile-nav-drawer {
	display: none;
	position: fixed;
	top: 80px;
	left: 0;
	right: 0;
	bottom: 0;
	background-color: rgba(15, 23, 42, 0.65);
	backdrop-filter: blur(6px);
	-webkit-backdrop-filter: blur(6px);
	z-index: 999;
	opacity: 0;
	visibility: hidden;
	transition: all 0.25s ease;
}

.mobile-nav-drawer.is-active {
	display: block;
	opacity: 1;
	visibility: visible;
}

.mobile-nav-content {
	background-color: #FFFFFF;
	width: 85%;
	max-width: 320px;
	height: 100%;
	padding: 20px 0 32px 0;
	box-shadow: 8px 0 24px rgba(15, 23, 42, 0.2);
	overflow-y: auto;
}

.mobile-nav-content ul {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 0;
}

.mobile-nav-content li {
	display: block;
	width: 100%;
	margin: 0;
	padding: 0;
	border-bottom: 1px solid rgba(226, 232, 240, 0.9); /* Thin gray divider line */
}

/* Level 0 Top-Level Mobile Menu Links */
.mobile-nav-content a {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 12px 20px 12px 20px;
	font-weight: 700;
	font-size: 0.925rem;
	color: #0f172a;
	text-decoration: none;
	background-color: #FFFFFF;
	transition: background-color 0.15s ease, color 0.15s ease;
	border-left: 4px solid transparent;
}

.mobile-nav-content a:hover,
.mobile-nav-content a:focus {
	background-color: #f8fafc;
	color: #6b21a8;
	border-left-color: #6b21a8;
}

/* Level 1 Sub-Menu Mobile Container & Links (32px Indent + Gold Accent) */
.mobile-nav-content .sub-menu {
	background-color: #f8fafc;
	border-top: 1px solid #e2e8f0;
	border-bottom: 1px solid #e2e8f0;
}

.mobile-nav-content .sub-menu li {
	border-bottom: 1px solid #edf2f7;
}

.mobile-nav-content .sub-menu li:last-child {
	border-bottom: none;
}

.mobile-nav-content .sub-menu a {
	padding: 10px 20px 10px 32px !important; /* Level 1 Indentation */
	font-weight: 600 !important;
	font-size: 0.875rem !important;
	color: #334155 !important;
	background-color: #f8fafc !important;
	border-left: 3px solid var(--color-gold, #f59e0b) !important;
}

.mobile-nav-content .sub-menu a:hover,
.mobile-nav-content .sub-menu a:focus {
	background-color: #f1f5f9 !important;
	color: #6b21a8 !important;
}

/* Level 2 Sub-Menu Mobile Container & Links (48px Indent + Slate Accent) */
.mobile-nav-content .sub-menu .sub-menu {
	background-color: #f1f5f9;
	border-top: 1px solid #cbd5e1;
	border-bottom: 1px solid #cbd5e1;
}

.mobile-nav-content .sub-menu .sub-menu li {
	border-bottom: 1px solid #e2e8f0;
}

.mobile-nav-content .sub-menu .sub-menu li:last-child {
	border-bottom: none;
}

.mobile-nav-content .sub-menu .sub-menu a {
	padding: 9px 20px 9px 48px !important; /* Level 2 Indentation */
	font-weight: 500 !important;
	font-size: 0.825rem !important;
	color: #64748b !important;
	background-color: #f1f5f9 !important;
	border-left: 3px solid #94a3b8 !important;
}

.mobile-nav-content .sub-menu .sub-menu a:hover,
.mobile-nav-content .sub-menu .sub-menu a:focus {
	background-color: #e2e8f0 !important;
	color: #6b21a8 !important;
}