/*
 * Header, Navigation, Mega Menu & Mobile Drawer
 * ----------------------------------------------------------------------- */

/* ---- Top Bar ---- */

.header-topbar {
	background: linear-gradient(90deg, var(--color-dark) 0%, #142033 100%);
	color: #CBD5E1;
	font-size: var(--fs-small);
	padding-block: 0.55rem;
	border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-topbar__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-sm);
	flex-wrap: wrap;
}

.header-topbar__contact {
	display: flex;
	gap: var(--space-md);
}

.header-topbar__link {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	color: #CBD5E1;
	transition: color var(--transition-fast);
}

.header-topbar__link .icon {
	color: var(--color-secondary);
}

.header-topbar__link:hover {
	color: var(--color-secondary);
}

.header-topbar__location {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	opacity: 0.85;
}

@media (max-width: 640px) {
	.header-topbar__location { display: none; }
	.header-topbar__contact { gap: var(--space-sm); }
}

/* ---- Main Header ---- */

.site-header {
	transition: box-shadow var(--transition-fast);
}

.site-header.is-scrolled {
	box-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
}

.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-md);
	min-height: var(--header-height);
}

.site-branding img {
	max-height: 52px;
	width: auto;
	transition: transform var(--transition-fast);
}

.site-branding a:hover img {
	transform: scale(1.03);
}

.site-branding__text-logo {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	line-height: 1.2;
}

.site-branding__mark {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 44px;
	height: 44px;
	flex-shrink: 0;
	border-radius: var(--radius-md);
	background: var(--gradient-primary);
	color: var(--color-white);
	box-shadow: 0 8px 20px rgba(var(--color-primary-rgb), 0.3);
	transition: transform var(--transition-fast);
}

.site-branding__text-logo:hover .site-branding__mark {
	transform: rotate(-6deg) scale(1.05);
}

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

.site-branding .site-title {
	font-family: var(--font-heading);
	font-weight: var(--fw-bold);
	font-size: 1.35rem;
	color: var(--color-dark);
	letter-spacing: -0.01em;
}

.site-branding .site-description {
	font-size: 0.75rem;
	font-weight: var(--fw-medium);
	color: var(--color-gray);
	text-transform: uppercase;
	letter-spacing: 0.04em;
}

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

.site-header__cta {
	box-shadow: 0 6px 18px rgba(var(--color-primary-rgb), 0.28);
}

/* ---- Primary Navigation (Desktop) ---- */

.main-navigation__list {
	display: flex;
	align-items: center;
	gap: var(--space-lg);
}

.main-navigation__item {
	position: relative;
}

.main-navigation__link {
	position: relative;
	display: inline-flex;
	align-items: center;
	gap: 0.3rem;
	font-weight: var(--fw-medium);
	color: var(--color-dark);
	padding: 0.5rem 0;
}

.main-navigation__link::after {
	content: '';
	position: absolute;
	left: 0;
	bottom: 0;
	width: 0;
	height: 2px;
	background: var(--gradient-primary);
	border-radius: var(--radius-full);
	transition: width var(--transition-fast);
}

.main-navigation__link:hover,
.main-navigation__item--has-children:hover > .main-navigation__link {
	color: var(--color-primary);
}

.main-navigation__link:hover::after {
	width: 100%;
}

.main-navigation__chevron {
	width: 8px;
	height: 8px;
	border-right: 2px solid currentColor;
	border-bottom: 2px solid currentColor;
	transform: rotate(45deg);
	margin-top: -2px;
}

/* Submenu / Mega Menu Panel */

.main-navigation__submenu {
	position: absolute;
	top: 100%;
	left: 0;
	min-width: 240px;
	background: var(--color-white);
	border-radius: var(--radius-md);
	box-shadow: var(--shadow-lg);
	padding: var(--space-sm);
	opacity: 0;
	visibility: hidden;
	transform: translateY(8px);
	transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
	z-index: var(--z-header);
}

.main-navigation__item--has-children:hover > .main-navigation__submenu,
.main-navigation__item--has-children:focus-within > .main-navigation__submenu {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}

.main-navigation__submenu .main-navigation__item {
	width: 100%;
}

.main-navigation__submenu .main-navigation__link {
	width: 100%;
	padding: 0.6rem 0.75rem;
	border-radius: var(--radius-sm);
}

.main-navigation__submenu .main-navigation__link:hover {
	background: var(--gradient-soft);
}

.mega-menu__panel {
	min-width: 480px;
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 0.25rem;
}

@media (max-width: 1100px) {
	.main-navigation { display: none; }
}

/* ---- Mobile Menu Toggle ---- */

.mobile-menu-toggle {
	display: none;
	flex-direction: column;
	justify-content: center;
	gap: 5px;
	width: 44px;
	height: 44px;
	background: transparent;
	border: none;
	padding: 0;
}

.mobile-menu-toggle__bar {
	display: block;
	width: 24px;
	height: 2px;
	background: var(--color-dark);
	border-radius: 2px;
	transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-menu-toggle[aria-expanded="true"] .mobile-menu-toggle__bar:nth-child(1) {
	transform: translateY(7px) rotate(45deg);
}
.mobile-menu-toggle[aria-expanded="true"] .mobile-menu-toggle__bar:nth-child(2) {
	opacity: 0;
}
.mobile-menu-toggle[aria-expanded="true"] .mobile-menu-toggle__bar:nth-child(3) {
	transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 1100px) {
	.mobile-menu-toggle { display: flex; }
	.site-header__cta { display: none; }
}

/* ---- Mobile Menu Drawer ---- */

.mobile-menu {
	position: fixed;
	top: 0;
	right: 0;
	height: 100vh;
	width: min(360px, 85vw);
	background: var(--color-white);
	box-shadow: var(--shadow-lg);
	z-index: var(--z-overlay);
	transform: translateX(100%);
	transition: transform var(--transition-base);
	overflow-y: auto;
}

.mobile-menu.is-open {
	transform: translateX(0);
}

.mobile-menu__inner {
	padding: var(--space-lg) var(--space-md);
}

.mobile-menu__close {
	background: transparent;
	border: none;
	font-size: 2rem;
	line-height: 1;
	color: var(--color-dark);
	margin-bottom: var(--space-md);
	min-width: 44px;
	min-height: 44px;
}

.mobile-menu__list .main-navigation__item {
	border-bottom: 1px solid #E2E8F0;
}

.mobile-menu__list .main-navigation__link {
	width: 100%;
	padding: 0.9rem 0;
}

.mobile-menu__list .main-navigation__submenu {
	position: static;
	opacity: 1;
	visibility: visible;
	transform: none;
	box-shadow: none;
	background: var(--color-bg);
	margin-bottom: 0.5rem;
}

.mobile-menu__cta {
	display: flex;
	flex-direction: column;
	gap: var(--space-sm);
	margin-top: var(--space-lg);
}

.mobile-menu-overlay {
	position: fixed;
	inset: 0;
	background: rgba(15, 23, 42, 0.5);
	z-index: calc(var(--z-overlay) - 1);
}

.mobile-menu-overlay[hidden] {
	display: none;
}

/* ---- Reading Progress Bar (Blog Posts) ---- */

.reading-progress-bar {
	position: fixed;
	top: 0;
	left: 0;
	height: 3px;
	width: 0%;
	background: var(--gradient-primary);
	z-index: calc(var(--z-header) + 1);
	transition: width 0.1s linear;
}

/* ---- Breadcrumbs ---- */

.breadcrumbs {
	padding-block: var(--space-sm);
	font-size: var(--fs-small);
}

.breadcrumbs__list {
	display: flex;
	flex-wrap: wrap;
	gap: 0.4rem;
	align-items: center;
}

.breadcrumbs__item {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	color: var(--color-gray);
}

.breadcrumbs__item a {
	color: var(--color-gray);
}

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

.breadcrumbs__separator {
	color: var(--color-gray);
}