/*!
 * Header & Navigation Styles
 * ACI Ottawa Student Chapter Theme
 */

/* ========================================
   SITE HEADER
   ======================================== */

.site-header {
	position: sticky;
	top: 0;
	z-index: var(--z-index-sticky);
	background-color: var(--color-white);
	border-bottom: 1px solid var(--color-light-gray);
	transition: all var(--transition-base);
}

.site-header.scrolled {
	box-shadow: var(--shadow-md);
}

.header-container {
	position: relative;
}

.header-inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-xl);
	padding-top: var(--space-lg);
	padding-bottom: var(--space-lg);
}

/* ========================================
   SITE BRANDING
   ======================================== */

.site-branding {
	display: flex;
	align-items: center;
	gap: var(--space-md);
	flex-shrink: 0;
}

.site-logo img {
	max-height: 60px;
	width: auto;
}

.site-identity {
	display: flex;
	flex-direction: column;
}

.site-title {
	font-size: var(--font-size-xl);
	font-weight: var(--font-weight-bold);
	line-height: 1.2;
	margin: 0;
}

.site-title a {
	color: var(--color-black);
	text-decoration: none;
}

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


.site-description {
	font-size: var(--font-size-sm);
	color: var(--color-secondary);
	margin: 0;
	line-height: 1.4;
}

/* ========================================
   PRIMARY NAVIGATION
   ======================================== */

.main-navigation {
	display: none;
	flex: 1;
}

@media (min-width: 1024px) {
	.main-navigation {
		display: flex;
		align-items: center;
		justify-content: center;
	}
}

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

.primary-menu > li {
	position: relative;
	margin: 0;
}

.primary-menu > li > a {
	display: flex;
	align-items: center;
	padding: var(--space-sm) var(--space-md);
	font-size: var(--font-size-base);
	font-weight: var(--font-weight-medium);
	color: var(--color-dark-gray);
	text-decoration: none;
	border-radius: var(--radius-md);
	transition: all var(--transition-base);
}

.primary-menu > li > a:hover,
.primary-menu > li > a:focus {
	color: var(--color-primary);
	background-color: var(--color-primary-lightest);
}

.primary-menu > li.current-menu-item > a,
.primary-menu > li.current_page_item > a {
	color: var(--color-primary);
	font-weight: var(--font-weight-semibold);
}


/* Dropdown Menus */
.primary-menu .sub-menu {
	position: absolute;
	top: 100%;
	left: 0;
	min-width: 220px;
	padding: var(--space-sm);
	background-color: var(--color-white);
	border-radius: var(--radius-md);
	box-shadow: var(--shadow-xl);
	list-style: none;
	margin: var(--space-xs) 0 0;
	opacity: 0;
	visibility: hidden;
	transform: translateY(-10px);
	transition: all var(--transition-base);
	z-index: var(--z-index-dropdown);
}

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

.primary-menu .sub-menu li {
	margin: 0;
}

.primary-menu .sub-menu a {
	display: block;
	padding: var(--space-sm) var(--space-md);
	font-size: var(--font-size-sm);
	color: var(--color-dark-gray);
	text-decoration: none;
	border-radius: var(--radius-sm);
	transition: all var(--transition-base);
}

.primary-menu .sub-menu a:hover,
.primary-menu .sub-menu a:focus {
	color: var(--color-primary);
	background-color: var(--color-primary-lightest);
}

/* ========================================
   MOBILE MENU TOGGLE
   ======================================== */

.menu-toggle {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	width: 44px;
	height: 44px;
	padding: var(--space-sm);
	background: none;
	border: none;
	cursor: pointer;
}


@media (min-width: 1024px) {
	.menu-toggle {
		display: none;
	}
}

.menu-toggle-icon {
	position: relative;
	width: 24px;
	height: 18px;
}

.menu-toggle-icon .bar {
	position: absolute;
	left: 0;
	width: 100%;
	height: 2px;
	background-color: var(--color-dark-gray);
	border-radius: 2px;
	transition: all var(--transition-base);
}

.menu-toggle-icon .bar:nth-child(1) {
	top: 0;
}

.menu-toggle-icon .bar:nth-child(2) {
	top: 50%;
	transform: translateY(-50%);
}

.menu-toggle-icon .bar:nth-child(3) {
	bottom: 0;
}

.menu-toggle[aria-expanded="true"] .bar:nth-child(1) {
	top: 50%;
	transform: translateY(-50%) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .bar:nth-child(2) {
	opacity: 0;
}

.menu-toggle[aria-expanded="true"] .bar:nth-child(3) {
	bottom: 50%;
	transform: translateY(50%) rotate(-45deg);
}

/* Mobile Menu */
@media (max-width: 1023px) {
	.main-navigation {
		display: block;
		position: fixed;
		top: 0;
		right: 0;
		width: 100%;
		max-width: 320px;
		height: 100vh;
		padding: var(--space-2xl);
		background-color: var(--color-white);
		box-shadow: var(--shadow-2xl);
		transform: translateX(100%);
		transition: transform var(--transition-slow);
		overflow-y: auto;
		z-index: var(--z-index-modal);
	}


	.main-navigation.active {
		display: block;
		transform: translateX(0);
	}

	.primary-menu {
		flex-direction: column;
		align-items: stretch;
		gap: var(--space-xs);
	}

	.primary-menu > li > a {
		padding: var(--space-md);
		font-size: var(--font-size-md);
	}

	.primary-menu .sub-menu {
		position: static;
		opacity: 1;
		visibility: visible;
		transform: none;
		box-shadow: none;
		padding-left: var(--space-md);
		margin-top: var(--space-xs);
		background-color: var(--color-off-white);
		border-radius: var(--radius-sm);
	}
}

.mobile-menu-overlay {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background-color: rgba(0, 0, 0, 0.5);
	opacity: 0;
	visibility: hidden;
	transition: all var(--transition-base);
	z-index: var(--z-index-modal-backdrop);
}

.mobile-menu-overlay.active {
	opacity: 1;
	visibility: visible;
}

/* ========================================
   HEADER ACTIONS
   ======================================== */

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

.search-toggle,
.dark-mode-toggle {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 44px;
	height: 44px;
	padding: var(--space-sm);
	color: var(--color-dark-gray);
	background: none;
	border: none;
	border-radius: var(--radius-md);
	cursor: pointer;
	transition: all var(--transition-base);
}


.search-toggle:hover,
.search-toggle:focus,
.dark-mode-toggle:hover,
.dark-mode-toggle:focus {
	color: var(--color-primary);
	background-color: var(--color-primary-lightest);
}

/* ========================================
   SEARCH MODAL
   ======================================== */

.search-modal {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background-color: rgba(26, 26, 26, 0.95);
	backdrop-filter: blur(10px);
	display: flex;
	align-items: center;
	justify-content: center;
	opacity: 0;
	visibility: hidden;
	transition: all var(--transition-slow);
	z-index: var(--z-index-modal);
}

.search-modal.active {
	opacity: 1;
	visibility: visible;
}

.search-modal-inner {
	position: relative;
	width: 100%;
	max-width: 640px;
	padding: var(--space-xl);
	animation: fadeInUp 0.4s ease-out;
}

.search-modal-close {
	position: absolute;
	top: 0;
	right: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	width: 44px;
	height: 44px;
	color: var(--color-white);
	background: none;
	border: none;
	cursor: pointer;
	transition: all var(--transition-base);
}

.search-modal-close:hover,
.search-modal-close:focus {
	color: var(--color-primary);
	transform: rotate(90deg);
}

.search-modal .search-form {
	margin-top: var(--space-2xl);
}


.search-modal .search-field {
	width: 100%;
	padding: var(--space-lg) var(--space-xl);
	font-size: var(--font-size-2xl);
	color: var(--color-white);
	background-color: transparent;
	border: none;
	border-bottom: 3px solid var(--color-white);
	outline: none;
}

.search-modal .search-field::placeholder {
	color: rgba(255, 255, 255, 0.6);
}

.search-modal .search-field:focus {
	border-color: var(--color-primary);
}

.search-modal .search-submit {
	margin-top: var(--space-xl);
}

/* ========================================
   ANNOUNCEMENT BAR
   ======================================== */

.announcement-bar {
	padding: var(--space-sm) 0;
	background-color: var(--color-primary);
	color: var(--color-white);
	text-align: center;
	font-size: var(--font-size-sm);
}

.announcement-bar a {
	color: var(--color-white);
	text-decoration: underline;
}

.announcement-bar a:hover {
	text-decoration: none;
}

.announcement-bar-close {
	position: absolute;
	right: var(--space-md);
	top: 50%;
	transform: translateY(-50%);
	padding: var(--space-xs);
	color: var(--color-white);
	background: none;
	border: none;
	cursor: pointer;
	opacity: 0.8;
	transition: opacity var(--transition-base);
}

.announcement-bar-close:hover {
	opacity: 1;
}