/**
 * Variant CSS: nav--logo-center-split-menu
 * Path B nav role — symmetrical 3-column header: menu items left, brand centered
 * on the axis, single CTA right. Gallery / boutique character. On mobile the
 * brand stays centered, a left hamburger opens the full menu + CTA.
 */

body.aibt-universal .universal-nav--logo-center-split-menu {
	position: sticky;
	top: 0;
	z-index: 100;
	background: color-mix(in oklab, var(--background) 94%, 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;
}

body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__inner {
	/* 3-column grid keeps the brand optically centered regardless of menu width. */
	display: grid;
	grid-template-columns: 1fr auto 1fr;
	align-items: center;
	gap: 1.5rem;
	padding: 1.15rem clamp(var(--space-md), 4vw, var(--space-xl));
	max-width: var(--max-ultra);
	margin: 0 auto;
}

/* Left menu group — first grid cell */
body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__menu--left {
	display: flex;
	align-items: center;
	gap: 1.75rem;
	justify-self: start;
	margin: 0 !important;
}

body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__menu--left a {
	font-family: var(--font-body);
	font-size: var(--text-sm);
	color: var(--text-secondary);
	text-decoration: none;
	letter-spacing: 0.02em;
	white-space: nowrap;
	transition: color var(--duration-fast) var(--ease-default);
}

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

/* Brand — centered grid cell, on the optical axis */
body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__brand {
	font-family: var(--font-display) !important;
	font-weight: 500 !important;
	font-size: 1.4rem !important;
	letter-spacing: 0.04em !important;
	text-transform: uppercase;
	color: var(--text-primary) !important;
	margin: 0 !important;
	line-height: 1 !important;
	justify-self: center;
	text-align: center;
	white-space: nowrap;
}

/* Right cell — holds CTA (and on mobile, the drop panel) */
body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__menu-wrap {
	display: flex;
	align-items: center;
	gap: 1.5rem;
	justify-self: end;
	justify-content: flex-end;
}

/* The full mobile menu is hidden on desktop (left group covers desktop nav). */
body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__menu--mobile {
	display: none;
	margin: 0 !important;
}

/* Primary CTA — solid */
body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__cta {
	font-family: var(--font-body);
	font-size: 0.88rem;
	font-weight: 500;
	letter-spacing: var(--tracking-wide);
	padding: 0.7rem 1.4rem;
	color: var(--cta-text-primary);
	background: var(--cta-bg-primary);
	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-split-menu .universal-nav__cta:hover {
	background: var(--accent-hover);
}

/* Hamburger toggle — hidden on desktop, sits in the left grid cell on mobile */
body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__toggle {
	display: none;
	background: transparent;
	border: 1px solid var(--divider-primary);
	cursor: pointer;
	width: 44px;
	height: 44px;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 6px;
	padding: 0;
	transition: border-color var(--duration-fast) var(--ease-default);
	justify-self: start;
}

body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__toggle:hover {
	border-color: var(--text-primary);
}

body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__toggle-bar {
	display: block;
	width: 18px;
	height: 1.5px;
	background: var(--text-primary);
	transition: transform var(--duration-base, 280ms) var(--ease-default);
}

body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__toggle[aria-expanded="true"] .universal-nav__toggle-bar:nth-child(1) {
	transform: translateY(4px) rotate(45deg);
}

body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__toggle[aria-expanded="true"] .universal-nav__toggle-bar:nth-child(2) {
	transform: translateY(-3px) rotate(-45deg);
}

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

@media (max-width: 781px) {
	/* Backdrop-filter establishes a containing block that would trap the fixed
	   drop panel — drop it + use a solid bar on mobile. */
	body.aibt-universal .universal-nav--logo-center-split-menu {
		backdrop-filter: none;
		-webkit-backdrop-filter: none;
		background: var(--background);
	}

	/* Keep the brand centered: hamburger left, brand center, empty right cell. */
	body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__toggle {
		display: flex;
	}

	/* The desktop left menu hides; the full menu lives in the drop panel. */
	body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__menu--left {
		display: none;
	}

	body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__menu--mobile {
		display: flex;
		flex-direction: column;
		align-items: center;
		gap: 1.4rem;
	}

	body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__menu-wrap {
		position: fixed;
		top: 70px;
		left: 0;
		right: 0;
		bottom: 0;
		background: var(--background);
		flex-direction: column;
		align-items: center;
		gap: 2.5rem;
		justify-content: flex-start;
		padding: 3rem 1.5rem 2rem;
		transform: translateY(-110%);
		transition: transform var(--duration-medium, 320ms) var(--ease-emphasized, var(--ease-default));
		z-index: 99;
		box-shadow: var(--decor-shadow-elevated, 0 24px 48px -24px rgba(0, 0, 0, 0.25));
		overflow-y: auto;
	}

	body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__menu-wrap[data-open="true"] {
		transform: translateY(0);
	}

	body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__menu--mobile a {
		font-family: var(--font-body);
		font-size: 1.4rem;
		color: var(--text-primary);
		text-decoration: none;
		transition: color var(--duration-fast) var(--ease-default);
	}

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

	body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__cta {
		justify-content: center;
		font-size: 1rem;
		padding: 0.9rem 1.4rem;
	}
}

@media (max-width: 640px) {
	/* A5 — cap brand letter-spacing on small screens (uppercase + tracking). */
	body.aibt-universal .universal-nav--logo-center-split-menu .universal-nav__brand {
		font-size: 1.2rem !important;
		letter-spacing: 0.02em !important;
	}
}