/*
 * Vista Theme — Responsive media queries
 * Split from the original stylesheet; keep load order intact.
 */

/* ==========================================================================
   14. RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */

@media (max-width: 1100px) {
	.footer-main {
		grid-template-columns: 1fr 1fr;
		gap: 40px;
	}
}

@media (max-width: 900px) {
	:root {
		--container: calc(100% - 40px);
	}

	.hero-inner {
		grid-template-columns: 1fr;
		min-height: auto;
	}

	.hero-content {
		max-width: 100%;
		padding: 48px 24px;
	}

	.hero-visual {
		height: 380px;
	}

	.value-grid,
	.service-grid,
	.showcase-grid,
	.process-steps,
	.blog-card-grid,
	.page-feature-grid,
	.page-related-links {
		grid-template-columns: 1fr 1fr;
	}

	.manifesto {
		grid-template-columns: 1fr;
	}

	.destinations {
		grid-template-columns: 1fr;
		gap: 40px;
	}

	.destination-intro {
		position: static;
	}

	.quote-wrap {
		grid-template-columns: 1fr;
		gap: 48px;
	}

	.interior-hero {
		grid-template-columns: 1fr;
		gap: 32px;
	}

	.interior-visual {
		height: 340px;
	}

	.page-story {
		grid-template-columns: 1fr;
		gap: 24px;
	}

	.article-body {
		grid-template-columns: 1fr;
		gap: 48px;
	}

	.article-aside {
		position: static;
		border-left: none;
		padding-left: 0;
		padding-top: 0;
	}

	.related-cards-grid {
		grid-template-columns: 1fr;
		gap: 20px;
	}

	.article-navigation {
		grid-template-columns: 1fr;
		gap: 20px;
	}

	.nav-next {
		text-align: left;
	}

	.blog-hero {
		grid-template-columns: 1fr;
		gap: 32px;
	}

	.blog-hero-visual {
		height: 280px;
	}

	.page-scope-grid {
		grid-template-columns: repeat(2, 1fr);
	}

	.page-process-grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

/* Body lock when mobile menu is open */
body.menu-open {
	overflow: hidden;
	touch-action: none;
}

@media (max-width: 960px) {
	.header-inner {
		height: 70px;
	}

	.brand-mark {
		width: 36px;
		height: 36px;
	}

	.brand-mark svg {
		width: 26px;
		height: 26px;
	}

	.brand-name {
		font-size: 12.5px;
		letter-spacing: 0.1em;
	}

	.brand-name .brand-sub {
		font-size: 8.5px;
	}

	.menu-toggle {
		display: inline-flex;
	}

	.primary-navigation {
		position: fixed;
		top: 70px;
		right: 0;
		left: 0;
		bottom: 0;
		height: calc(100svh - 70px);
		flex-direction: column;
		align-items: stretch;
		justify-content: flex-start;
		padding: 20px 20px 48px;
		background: var(--paper);
		border-top: 1px solid var(--border);
		overflow-y: auto;
		-webkit-overflow-scrolling: touch;
		transform: translateY(-8px);
		opacity: 0;
		visibility: hidden;
		pointer-events: none;
		transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.22s ease, visibility 0.28s;
	}

	.primary-navigation.is-open {
		transform: translateY(0);
		opacity: 1;
		visibility: visible;
		pointer-events: auto;
	}

	.nav-links {
		flex-direction: column;
		align-items: stretch;
		gap: 0;
	}

	.nav-group {
		flex-direction: column;
		align-items: stretch;
		border-bottom: 1px solid var(--border);
	}

	.nav-group-trigger {
		display: flex;
		align-items: center;
		justify-content: space-between;
		width: 100%;
	}

	.nav-parent,
	.nav-simple-link {
		padding: 15px 0;
		font-size: 15.5px;
		font-weight: 600;
		color: var(--green-deep);
		letter-spacing: 0.02em;
	}

	.nav-group .nav-parent {
		flex: 1;
		border-bottom: none;
	}

	.nav-simple-link {
		border-bottom: 1px solid var(--border);
	}

	.nav-submenu-toggle {
		position: static;
		display: grid;
		place-items: center;
		width: 44px;
		height: 44px;
		padding: 0;
		border-radius: var(--radius-sm);
		background: transparent;
		color: var(--muted);
		cursor: pointer;
	}

	.nav-submenu-toggle:active {
		background: var(--cream);
	}

	.nav-submenu-toggle .toggle-arrow {
		display: inline-block;
		font-size: 15px;
		transition: transform 0.25s ease, color 0.25s ease;
	}

	.nav-group.is-open .nav-submenu-toggle .toggle-arrow {
		transform: rotate(180deg);
		color: var(--gold-dark);
	}

	.nav-group-mega {
		position: relative;
	}

	.nav-mega-dropdown,
	.nav-dropdown {
		position: static;
		display: none;
		width: 100%;
		max-width: 100%;
		padding: 12px;
		margin-bottom: 14px;
		border-radius: var(--radius-sm);
		background: rgba(37, 58, 48, 0.03);
		border: 1px solid rgba(24, 36, 30, 0.06);
		box-shadow: none;
		animation: none;
	}

	.nav-group.is-open .nav-mega-dropdown,
	.nav-group.is-open .nav-dropdown {
		display: block;
		animation: navMobileSlideDown 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
	}

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

	.mega-menu-grid {
		grid-template-columns: 1fr;
		gap: 18px;
	}

	.mega-col-services,
	.mega-col-regions {
		border-right: none;
		border-bottom: 1px solid var(--border);
		padding-right: 0;
		padding-bottom: 16px;
	}

	.mega-service-item {
		background: var(--white);
		border: 1px solid rgba(24, 36, 30, 0.04);
		padding: 9px 12px;
	}

	.mega-region-grid {
		grid-template-columns: 1fr 1fr;
		gap: 6px 8px;
	}

	.mega-region-link {
		background: var(--white);
		border: 1px solid rgba(24, 36, 30, 0.05);
		padding: 8px 10px;
	}

	.mega-region-foot {
		margin-top: 10px;
		padding-top: 8px;
	}

	.dropdown-heading {
		margin: 6px 0 10px;
		font-size: 10px;
		letter-spacing: 0.14em;
	}

	.nav-dropdown-services .dropdown-link {
		display: flex;
		align-items: center;
		gap: 12px;
		padding: 10px 12px;
		background: var(--white);
		margin-bottom: 6px;
		border-radius: var(--radius-sm);
		border: 1px solid rgba(24, 36, 30, 0.04);
	}

	.nav-dropdown-services .dropdown-link:last-child {
		margin-bottom: 0;
	}

	.nav-dropdown-services .dropdown-number {
		font-size: 13px;
		color: var(--gold-dark);
	}

	.nav-dropdown-services .dropdown-link-copy strong {
		font-size: 13px;
	}

	.nav-dropdown-services .dropdown-link-copy small {
		font-size: 11px;
	}

	.destination-link-grid {
		display: grid;
		grid-template-columns: 1fr 1fr;
		gap: 8px;
	}

	.destination-link-grid a {
		display: flex;
		align-items: center;
		justify-content: space-between;
		padding: 9px 12px;
		background: var(--white);
		border: 1px solid rgba(24, 36, 30, 0.05);
		border-radius: var(--radius-sm);
		font-size: 12.5px;
		font-weight: 500;
	}

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

	.header-actions {
		display: flex;
		flex-direction: column;
		gap: 12px;
		margin-top: 24px;
		padding-top: 20px;
		border-top: 1px solid var(--border);
	}

	.nav-cta {
		display: flex;
		align-items: center;
		justify-content: center;
		padding: 14px 20px;
		border-radius: var(--radius-sm);
		background: var(--gold-dark);
		border: 1px solid var(--gold-dark);
		color: var(--white);
		font-size: 14px;
		font-weight: 600;
		letter-spacing: 0.04em;
	}

	.nav-cta:hover,
	.nav-cta:active {
		background: var(--green-deep);
		border-color: var(--green-deep);
	}

	.mobile-contact-strip {
		display: grid;
		grid-template-columns: 1fr 1fr;
		gap: 10px;
	}

	.mobile-contact-btn {
		display: inline-flex;
		align-items: center;
		justify-content: center;
		gap: 8px;
		padding: 12px 10px;
		border-radius: var(--radius-sm);
		background: var(--white);
		border: 1px solid var(--border);
		color: var(--green-deep);
		font-size: 12.5px;
		font-weight: 600;
		transition: background-color 0.2s ease;
	}

	.mobile-contact-btn:active {
		background: var(--cream);
	}

	.mobile-contact-zalo {
		color: #0068ff;
		border-color: rgba(0, 104, 255, 0.25);
	}
}

@media (max-width: 480px) {
	.header-inner {
		height: 64px;
	}

	.primary-navigation {
		top: 64px;
		height: calc(100svh - 64px);
		padding: 16px 14px 40px;
	}

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

	.destination-link-grid a {
		padding: 8px 10px;
		font-size: 12px;
	}

	.brand-name {
		font-size: 11.5px;
		letter-spacing: 0.08em;
	}

	.brand-name .brand-sub {
		font-size: 8px;
		letter-spacing: 0.16em;
	}
}

@media (max-width: 640px) {
	:root {
		--container: calc(100% - 28px);
	}

	.hero-content {
		padding: 36px 14px 44px;
	}

	.hero h1 {
		font-size: clamp(38px, 9.5vw, 48px);
	}

	.hero-actions {
		flex-direction: column;
		align-items: stretch;
		gap: 16px;
	}

	.hero-trust-bar {
		flex-wrap: wrap;
		gap: 20px;
	}

	.trust-divider {
		display: none;
	}

	.section-heading {
		flex-direction: column;
		align-items: flex-start;
		gap: 16px;
	}

	.section-heading-right {
		align-items: flex-start;
		text-align: left;
	}

	.value-grid,
	.service-grid,
	.showcase-grid,
	.process-steps,
	.destination-list,
	.blog-card-grid,
	.page-feature-grid,
	.page-related-links,
	.page-scope-grid,
	.page-process-grid,
	.footer-main,
	.form-row {
		grid-template-columns: 1fr;
	}

	.interior-actions {
		flex-direction: column;
		align-items: stretch;
		gap: 12px;
	}

	.interior-trust-row {
		flex-direction: column;
		gap: 8px;
	}

	.page-cta-actions {
		flex-direction: column;
		align-items: stretch;
	}

	.quote-form-card {
		padding: 24px 18px;
	}

	.footer-bottom {
		flex-direction: column;
		gap: 12px;
		text-align: center;
	}

	.floating-contact {
		right: 14px;
		bottom: 14px;
		gap: 8px;
	}

	.floating-btn {
		padding: 8px 12px;
		font-size: 12px;
	}
}