/**
 * Variant CSS: nav--logo-center-dual-menu
 *
 * Editorial five-zone masthead: a centred brand mark flanked by TWO symmetric
 * menu groups (links to its left AND right), with a small utility line (phone)
 * + a single CTA pinned to the far right edge. The most balanced, magazine-like
 * navigation composition. On mobile the brand stays centred while a hamburger
 * (left) reveals the full menu + utility + CTA stacked beneath.
 *
 * Uses chrome tokens (--text-primary / --text-secondary / --background /
 * --background-dark / --text-on-dark / --divider-primary / --accent / CTA set).
 * Scope: every selector starts body.aibt-universal .universal-nav--logo-center-dual-menu.
 */

body.aibt-universal .universal-nav--logo-center-dual-menu {
	position: sticky;
	top: 0;
	z-index: 100;
	background: color-mix(in oklab, var(--background) 92%, transparent);
	backdrop-filter: blur(14px);
	-webkit-backdrop-filter: blur(14px);
	border-bottom: 1px solid var(--divider-primary);
	/* Nav must be compact: kill inherited section/global block padding + margin. */
	padding-block: 0 !important;
	margin-block: 0 !important;
}

/* Five-zone grid: [toggle] menu-left | brand | menu-right | utility.
   The toggle collapses to 0 width on desktop (display:none below). */
body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__inner {
	display: grid;
	grid-template-columns: 1fr auto 1fr auto;
	align-items: center;
	gap: clamp(var(--space-sm), 2.4vw, var(--space-lg));
	padding: 1.1rem clamp(var(--space-md), 4vw, var(--space-xl));
	max-width: var(--max-ultra, 1320px);
	margin-inline: auto;
}

/* Centred brand mark (column 2). */
body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__brand {
	grid-column: 2;
	font-family: var(--font-display) !important;
	font-weight: 500 !important;
	font-size: 1.4rem !important;
	letter-spacing: -0.01em !important;
	color: var(--text-primary, var(--ink)) !important;
	margin: 0 !important;
	line-height: 1 !important;
	text-align: center;
	white-space: nowrap;
}

/* Symmetric menu groups. */
body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__menu {
	display: flex;
	align-items: center;
	gap: clamp(var(--space-sm), 1.6vw, var(--space-md));
	font-family: var(--font-body) !important;
	font-size: var(--text-sm) !important;
	color: var(--text-secondary, var(--ink)) !important;
	margin: 0 !important;
	letter-spacing: 0.02em !important;
}

body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__menu--left {
	grid-column: 1;
	justify-content: flex-end;
}

body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__menu--right {
	grid-column: 3;
	justify-content: flex-start;
}

body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__menu a {
	color: inherit;
	text-decoration: none;
	transition: color var(--duration-fast) var(--ease-default);
	white-space: nowrap;
}

body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__menu a:hover {
	color: var(--accent);
}

/* Far-right utility cluster (column 4): phone line + CTA. */
body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__utility {
	grid-column: 4;
	display: flex;
	align-items: center;
	gap: clamp(var(--space-sm), 1.4vw, var(--space-md));
	justify-self: end;
}

body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__util {
	font-family: var(--font-body) !important;
	font-size: var(--text-xs, 0.78rem) !important;
	font-weight: 600 !important;
	letter-spacing: 0.02em !important;
	color: var(--text-secondary, var(--ink)) !important;
	margin: 0 !important;
	white-space: nowrap;
}

/* Single CTA. */
body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__cta {
	font-family: var(--font-body);
	font-size: 0.86rem;
	font-weight: 500;
	letter-spacing: var(--tracking-wide);
	padding: 0.65rem 1.3rem;
	color: var(--cta-text-primary, #ffffff);
	background: var(--cta-bg-primary, var(--accent));
	border: var(--decor-border-width, 1px) solid var(--cta-border-primary, transparent);
	text-decoration: none;
	transition: background var(--duration-fast) var(--ease-default);
	min-height: 40px;
	display: inline-flex;
	align-items: center;
	white-space: nowrap;
	border-radius: var(--decor-radius);
}

body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__cta:hover {
	background: var(--accent-hover, var(--accent));
}

/* Hamburger toggle — hidden on desktop, shown on mobile. */
body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__toggle {
	display: none;
	grid-column: 1;
	justify-self: start;
	flex-direction: column;
	gap: 5px;
	width: 30px;
	height: 30px;
	padding: 4px;
	background: transparent;
	border: 0;
	cursor: pointer;
	box-sizing: border-box;
}

body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__toggle-bar {
	display: block;
	width: 100%;
	height: 1.5px;
	background: var(--text-primary, var(--ink));
	transition: background var(--duration-fast) var(--ease-default),
		transform var(--duration-fast) var(--ease-default);
}

/* Hover affordance on the hamburger — bars lift to accent (matches link hover). */
body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__toggle:hover .universal-nav__toggle-bar {
	background: var(--accent);
}

/* Keyboard focus rings (a11y) — accent outline on the light chrome surface. */
body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__menu a:focus-visible,
body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__cta:focus-visible,
body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__toggle:focus-visible {
	outline: 2px solid var(--accent);
	outline-offset: 2px;
	border-radius: var(--decor-radius);
}

/* ---- Mobile: collapse 4-col grid → hamburger (left) + centred brand,
   menus + utility fold below. ---- */
@media (max-width: 781px) {
	body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__inner {
		grid-template-columns: 1fr auto 1fr;
		grid-template-areas:
			"toggle brand spacer"
			"menus menus menus";
		gap: var(--space-sm);
		padding-block: 0.9rem;
	}

	body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__toggle {
		display: inline-flex;
		grid-area: toggle;
	}

	body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__brand {
		grid-area: brand;
	}

	/* Menus + utility fold into the second row, centred and wrapping. */
	body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__menu--left,
	body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__menu--right,
	body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__utility {
		grid-area: menus;
		grid-column: auto;
		justify-content: center;
		justify-self: center;
		flex-wrap: wrap;
		width: 100%;
	}

	body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__utility {
		flex-direction: column;
		gap: var(--space-sm);
		margin-top: 0.4rem;
	}
}

/* A5: cap uppercase letter-spacing on small screens (none here are uppercase,
   but the CTA uses tracking-wide — keep it tame on narrow viewports). */
@media (max-width: 640px) {
	body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__cta {
		letter-spacing: 0.02em;
	}
}

/* Reduced motion: drop hover/toggle transitions. */
@media (prefers-reduced-motion: reduce) {
	body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__menu a,
	body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__cta,
	body.aibt-universal .universal-nav--logo-center-dual-menu .universal-nav__toggle-bar {
		transition: none;
	}
}