/*
 * Vista Theme — Header and primary navigation
 * Split from the original stylesheet; keep load order intact.
 */

/* ==========================================================================
   03. HEADER & PRIMARY NAVIGATION
   ========================================================================== */

.site-header {
	position: sticky;
	z-index: 50;
	top: 0;
	border-bottom: 1px solid var(--border);
	background: rgba(248, 247, 242, 0.96);
	backdrop-filter: blur(14px);
	-webkit-backdrop-filter: blur(14px);
	transition: background-color 0.3s ease, border-color 0.3s ease;
}

.header-inner {
	position: relative;
	display: flex;
	width: var(--container);
	height: 84px;
	margin: 0 auto;
	align-items: center;
	justify-content: space-between;
}

.brand {
	display: inline-flex;
	align-items: center;
	gap: 12px;
}

.brand-mark {
	display: grid;
	width: 40px;
	height: 40px;
	place-items: center;
	border-radius: var(--radius-sm);
	background: rgba(37, 58, 48, 0.05);
	transition: background-color 0.2s ease;
}

.brand:hover .brand-mark {
	background: rgba(200, 167, 122, 0.15);
}

.brand-mark svg {
	width: 30px;
	height: 30px;
	fill: none;
	stroke: var(--green);
	stroke-linecap: round;
	stroke-linejoin: round;
	stroke-width: 1.6;
	transition: transform 0.25s ease, stroke 0.25s ease;
}

.brand:hover .brand-mark svg {
	stroke: var(--gold-dark);
	transform: scale(1.05);
}

.brand-mark .brand-flash {
	fill: var(--gold);
	stroke: none;
}

.brand-name {
	display: flex;
	flex-direction: column;
	font-size: 13px;
	font-weight: 700;
	letter-spacing: 0.12em;
	line-height: 1.35;
	color: var(--green-deep);
}

.brand-name .brand-sub {
	color: var(--gold-dark);
	font-size: 9.5px;
	font-weight: 700;
	letter-spacing: 0.22em;
	text-transform: uppercase;
}

.primary-navigation {
	display: flex;
	align-items: center;
	gap: clamp(16px, 2.5vw, 40px);
	font-size: 13px;
	letter-spacing: 0.03em;
	font-weight: 500;
	height: 100%;
}

.nav-links {
	display: flex;
	align-items: center;
	gap: clamp(18px, 2vw, 34px);
	height: 100%;
}

.nav-group {
	position: relative;
	display: flex;
	align-items: center;
	height: 100%;
}

.nav-group-trigger {
	display: inline-flex;
	align-items: center;
	height: 100%;
}

.nav-parent,
.nav-simple-link {
	padding: 8px 0;
	color: var(--ink);
	transition: color 0.2s ease;
}

.nav-parent:hover,
.nav-simple-link:hover {
	color: var(--gold-dark);
}

.nav-submenu-toggle {
	display: grid;
	width: 24px;
	height: 36px;
	padding: 0;
	place-items: center;
	border: 0;
	background: transparent;
	color: var(--muted);
	cursor: pointer;
	font-size: 14px;
	transition: transform 0.2s ease, color 0.2s ease;
}

.nav-submenu-toggle:hover {
	color: var(--gold-dark);
}

.nav-submenu-toggle[aria-expanded="true"] {
	transform: rotate(180deg);
}

/* ==========================================================================
   MEGA MENU NAVIGATION (DỊCH VỤ & KHU VỰC & 2 MẢNG TRỌNG TÂM)
   ========================================================================== */

.nav-group-mega {
	position: static;
	height: 100%;
	display: flex;
	align-items: center;
}

.nav-mega-dropdown {
	position: absolute;
	top: 100%;
	right: 0;
	left: auto;
	display: none;
	width: min(1040px, 100%);
	max-width: 1040px;
	padding: 24px 28px;
	border: 1px solid var(--cream-dark);
	border-radius: 0 0 var(--radius-md) var(--radius-md);
	background: var(--paper);
	box-shadow: 0 20px 48px rgba(19, 34, 28, 0.12);
	z-index: 60;
}

.nav-mega-dropdown::before {
	position: absolute;
	top: -30px;
	right: 0;
	left: 0;
	height: 30px;
	content: "";
}

.nav-group-mega:hover .nav-mega-dropdown,
.nav-group-mega:focus-within .nav-mega-dropdown,
.nav-group-mega.is-open .nav-mega-dropdown {
	display: block;
	animation: navFadeIn 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes navFadeIn {
	from {
		opacity: 0;
		transform: translateY(6px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.mega-menu-grid {
	display: grid;
	grid-template-columns: 1.15fr 1fr 1.1fr;
	gap: 28px;
}

.mega-heading {
	margin: 0 0 14px;
	color: var(--muted);
	font-size: 11px;
	font-weight: 700;
	letter-spacing: 0.12em;
	text-transform: uppercase;
}

.mega-heading-wrap {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 14px;
}

.mega-heading-wrap .mega-heading {
	margin: 0;
}

.mega-heading-link {
	font-size: 11px;
	color: var(--gold-dark);
	font-weight: 600;
	text-decoration: none;
	transition: color 0.2s ease;
}

.mega-heading-link:hover {
	color: var(--green);
}

/* Cột 1: Dịch vụ không gian */
.mega-col-services {
	border-right: 1px solid var(--border);
	padding-right: 24px;
}

.mega-service-list {
	display: flex;
	flex-direction: column;
	gap: 6px;
}

.mega-service-item {
	display: grid;
	grid-template-columns: 24px 1fr 16px;
	align-items: center;
	gap: 10px;
	padding: 10px 12px;
	border-radius: var(--radius-sm);
	color: var(--ink);
	text-decoration: none;
	transition: background-color 0.2s ease, transform 0.2s ease;
}

.mega-service-item:hover {
	background: var(--cream);
	transform: translateX(2px);
}

.mega-number {
	color: var(--gold-dark);
	font-family: var(--serif);
	font-size: 14px;
	font-weight: 600;
}

.mega-service-text {
	display: flex;
	flex-direction: column;
	gap: 2px;
}

.mega-service-text strong {
	font-size: 13px;
	font-weight: 600;
	color: var(--green-deep);
}

.mega-service-text small {
	color: var(--muted);
	font-size: 11px;
	line-height: 1.35;
}

.mega-arrow {
	color: var(--muted-light);
	font-size: 12px;
	transition: color 0.2s ease, transform 0.2s ease;
}

.mega-service-item:hover .mega-arrow,
.mega-region-link:hover .mega-arrow {
	color: var(--gold-dark);
	transform: translate(2px, -2px);
}

/* Cột 2: Khu vực */
.mega-col-regions {
	border-right: 1px solid var(--border);
	padding-right: 24px;
}

.mega-region-grid {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 4px 8px;
}

.mega-region-link {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 7px 10px;
	border-radius: var(--radius-sm);
	font-size: 12.5px;
	font-weight: 500;
	color: var(--ink);
	text-decoration: none;
	transition: background-color 0.2s ease, color 0.2s ease;
}

.mega-region-link:hover {
	background: var(--cream);
	color: var(--gold-dark);
}

.mega-region-foot {
	margin-top: 14px;
	padding-top: 10px;
	border-top: 1px dashed var(--border);
}

.mega-region-foot-link {
	display: flex;
	align-items: center;
	justify-content: space-between;
	font-size: 11.5px;
	font-weight: 600;
	color: var(--green);
	text-decoration: none;
	transition: color 0.2s ease;
}

.mega-region-foot-link:hover {
	color: var(--gold-dark);
}

/* Cột 3: 2 Mảng trọng tâm của website */
.mega-col-pillars {
	display: flex;
	flex-direction: column;
}

.mega-pillar-card {
	display: flex;
	flex-direction: column;
	gap: 6px;
	padding: 14px 16px;
	border-radius: var(--radius-sm);
	border: 1px solid var(--border);
	background: var(--white);
	margin-bottom: 12px;
	transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.mega-pillar-card:last-child {
	margin-bottom: 0;
}

.mega-pillar-card:hover {
	border-color: var(--gold);
	box-shadow: 0 6px 18px rgba(19, 34, 28, 0.06);
	transform: translateY(-2px);
}

.mega-pillar-card.mega-pillar-reviews {
	background: linear-gradient(135deg, rgba(200, 167, 122, 0.08) 0%, rgba(251, 250, 247, 0.95) 100%);
	border-color: rgba(200, 167, 122, 0.35);
}

.mega-badge {
	align-self: flex-start;
	padding: 2px 7px;
	border-radius: 3px;
	background: rgba(37, 58, 48, 0.08);
	color: var(--green);
	font-size: 9.5px;
	font-weight: 700;
	letter-spacing: 0.06em;
	text-transform: uppercase;
}

.mega-badge-gold {
	background: rgba(200, 167, 122, 0.22);
	color: var(--gold-dark);
}

.mega-pillar-title {
	margin: 0;
	font-size: 13.5px;
	font-weight: 700;
	color: var(--green-deep);
}

.mega-pillar-desc {
	margin: 0;
	font-size: 11px;
	color: var(--muted);
	line-height: 1.4;
}

.mega-pillar-btn {
	margin-top: 4px;
	font-size: 11.5px;
	font-weight: 600;
	color: var(--green);
	text-decoration: none;
	transition: color 0.2s ease;
}

.mega-pillar-btn:hover {
	color: var(--gold-dark);
}

.mega-pillar-btn-gold {
	color: var(--gold-dark);
}

/* Reviews top link styling */
.nav-link-reviews {
	display: inline-flex;
	align-items: center;
	gap: 6px;
}

.nav-dot-badge {
	display: inline-block;
	padding: 2px 6px;
	border-radius: 99px;
	background: var(--gold);
	color: var(--green-deep);
	font-size: 9px;
	font-weight: 800;
	letter-spacing: 0.06em;
	line-height: 1.1;
}

/* Fallback simple dropdown */
.nav-dropdown {
	position: absolute;
	top: calc(100% + 14px);
	left: -16px;
	display: none;
	width: 360px;
	padding: 18px;
	border: 1px solid var(--cream-dark);
	border-radius: var(--radius-md);
	background: var(--paper);
	box-shadow: var(--shadow-card);
}

.nav-dropdown::before {
	position: absolute;
	top: -16px;
	right: 0;
	left: 0;
	height: 16px;
	content: "";
}

.nav-group:hover .nav-dropdown,
.nav-group:focus-within .nav-dropdown,
.nav-group.is-open .nav-dropdown {
	display: block;
	animation: navFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.dropdown-heading {
	margin: 0 0 12px;
	color: var(--muted);
	font-size: 11px;
	font-weight: 700;
	letter-spacing: 0.12em;
	text-transform: uppercase;
}

.dropdown-link {
	display: grid;
	grid-template-columns: 28px 1fr 20px;
	align-items: center;
	padding: 10px 12px;
	border-radius: var(--radius-sm);
	color: var(--ink);
	transition: background-color 0.2s ease;
}

.dropdown-link:hover {
	background: var(--cream);
}

.dropdown-number {
	color: var(--gold-dark);
	font-family: var(--serif);
	font-size: 15px;
	font-weight: 600;
}

.dropdown-link-copy {
	display: flex;
	flex-direction: column;
	gap: 2px;
}

.dropdown-link-copy strong {
	font-size: 13.5px;
	font-weight: 600;
}

.dropdown-link-copy small {
	color: var(--muted);
	font-size: 11.5px;
	font-weight: 400;
}

.dropdown-arrow {
	color: var(--muted-light);
	font-size: 13px;
	transition: transform 0.2s ease, color 0.2s ease;
}

.dropdown-link:hover .dropdown-arrow {
	color: var(--gold-dark);
	transform: translate(2px, -2px);
}

.nav-dropdown-destinations {
	width: 460px;
}

.destination-link-grid {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 6px;
}

.destination-link-grid a {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 8px 12px;
	border-radius: var(--radius-sm);
	font-size: 13px;
	color: var(--ink);
	transition: background-color 0.2s ease, color 0.2s ease;
}

.destination-link-grid a:hover {
	background: var(--cream);
	color: var(--gold-dark);
}

.destination-link-grid a span {
	color: var(--muted-light);
	font-size: 11px;
}

.nav-cta {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 10px 22px;
	border: 1px solid var(--green-deep);
	border-radius: var(--radius-sm);
	background: var(--green-deep);
	color: var(--white);
	font-size: 12.5px;
	font-weight: 600;
	letter-spacing: 0.04em;
	transition: all 0.2s ease;
}

.nav-cta:hover {
	background: var(--gold-dark);
	border-color: var(--gold-dark);
	transform: translateY(-1px);
}

.mobile-contact-strip {
	display: none;
}

.menu-toggle {
	display: none;
	align-items: center;
	gap: 9px;
	height: 40px;
	padding: 0 14px;
	border: 1px solid var(--border);
	border-radius: var(--radius-sm);
	background: rgba(37, 58, 48, 0.04);
	color: var(--green-deep);
	cursor: pointer;
	font-size: 11.5px;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	transition: all 0.25s ease;
	-webkit-tap-highlight-color: transparent;
}

.menu-toggle:hover {
	background: rgba(200, 167, 122, 0.15);
	border-color: var(--gold);
}

.menu-toggle-icon {
	position: relative;
	display: flex;
	flex-direction: column;
	justify-content: center;
	gap: 5px;
	width: 18px;
	height: 14px;
}

.menu-toggle-icon i {
	display: block;
	width: 100%;
	height: 2px;
	background: currentColor;
	border-radius: 1px;
	transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
	transform-origin: center;
}

.menu-toggle[aria-expanded="true"] {
	background: var(--green-deep);
	color: var(--white);
	border-color: var(--green-deep);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-icon i:first-child {
	transform: translateY(3.5px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-icon i:last-child {
	transform: translateY(-3.5px) rotate(-45deg);
}