/**
 * Variant CSS: nav--minimal-always-hamburger
 *
 * Deliberately ascetic bar: a hamburger that is ALWAYS shown (desktop AND
 * mobile), brand on the left, one CTA on the right. No inline links at all —
 * the whole navigation lives in a full-screen, centred overlay panel. Boutique,
 * "less is more" character where the chrome yields to the content.
 *
 * The bar sits on the light chrome surface (--background / --text-primary).
 * The overlay is a dark full-screen surface → links + label + utility use
 * --text-on-dark and an accent-lift (KI-020: never --bg-main as foreground).
 * Scope: every selector starts body.aibt-universal .universal-nav--minimal-always-hamburger.
 */

body.aibt-universal .universal-nav--minimal-always-hamburger {
	position: sticky;
	top: 0;
	z-index: 100;
	background: var(--background);
	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;
}

/* Minimal bar: [hamburger] brand ........ CTA. Hamburger + brand sit at the
   left, CTA pinned right via margin-left:auto on the CTA. */
body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__inner {
	display: flex;
	align-items: center;
	gap: clamp(var(--space-md), 3vw, var(--space-xl));
	padding: 1.1rem clamp(var(--space-md), 4vw, var(--space-xl));
	max-width: var(--max-ultra, 1320px);
	margin-inline: auto;
}

/* ---- Always-on hamburger (desktop + mobile) ---- */
body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__toggle {
	display: inline-flex;
	flex-direction: column;
	justify-content: center;
	gap: 5px;
	width: 30px;
	height: 30px;
	padding: 5px 3px;
	background: transparent;
	border: 0;
	cursor: pointer;
	box-sizing: border-box;
	flex: 0 0 auto;
}

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

/* Subtle staggered bar widths for a refined, boutique read. */
body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__toggle-bar:nth-child(2) {
	width: 70%;
}

body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__toggle:hover .universal-nav__toggle-bar:nth-child(2) {
	width: 100%;
}

/* Brand. */
body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__brand {
	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;
	white-space: nowrap;
}

/* Single CTA pinned to the far right. */
body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__cta {
	margin-left: auto;
	flex: 0 0 auto;
	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-pill, 999px);
}

body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__cta:hover {
	background: var(--accent-hover, var(--accent));
}

/* ---- Full-screen centred overlay (revealed by JS data-open="true") ---- */
body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__overlay {
	position: fixed;
	inset: 0;
	background: var(--background-dark, #141414);
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: var(--space-lg, 2rem);
	padding: clamp(2rem, 8vw, 4rem) clamp(1.5rem, 6vw, 3rem);
	opacity: 0;
	visibility: hidden;
	transform: scale(1.02);
	transition: opacity var(--duration-medium, 360ms) var(--ease-default, ease),
		transform var(--duration-medium, 360ms) var(--ease-emphasized, cubic-bezier(0.22, 1, 0.36, 1)),
		visibility 0s linear var(--duration-medium, 360ms);
	z-index: 120;
	box-sizing: border-box;
	overflow-y: auto;
}

body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__overlay[data-open="true"] {
	opacity: 1;
	visibility: visible;
	transform: scale(1);
	transition: opacity var(--duration-medium, 360ms) var(--ease-default, ease),
		transform var(--duration-medium, 360ms) var(--ease-emphasized, cubic-bezier(0.22, 1, 0.36, 1));
}

/* Small label above the menu. Centred element ⇒ horizontal margins = auto. */
body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__overlay-label {
	font-family: var(--font-body) !important;
	font-size: var(--text-xs, 0.74rem) !important;
	font-weight: 600 !important;
	letter-spacing: var(--tracking-widest, 0.16em) !important;
	text-transform: uppercase;
	color: color-mix(in srgb, var(--accent) 60%, var(--on-dark, #ffffff)) !important;
	margin: 0 auto !important;
	text-align: center;
}

/* Stacked, large menu links — the focal element of the overlay. */
body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__menu {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 0.4rem;
	font-family: var(--font-display) !important;
	margin: 0 auto !important;
	text-align: center;
}

body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__menu a {
	font-size: clamp(1.7rem, 5vw, 2.4rem);
	line-height: 1.3;
	color: var(--text-on-dark, #ffffff);
	text-decoration: none;
	letter-spacing: -0.01em;
	transition: color var(--duration-fast) var(--ease-default);
}

body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__menu a:hover {
	color: color-mix(in srgb, var(--accent) 60%, var(--on-dark, #ffffff));
}

/* Utility line (phone + email) below the menu. Centred ⇒ margins auto. */
body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__overlay-util {
	font-family: var(--font-body) !important;
	font-size: var(--text-sm, 0.9rem) !important;
	font-weight: 500 !important;
	letter-spacing: 0.02em !important;
	color: color-mix(in srgb, var(--text-on-dark, #ffffff) 78%, transparent) !important;
	margin: 0 auto !important;
	text-align: center;
}

/* Keyboard focus rings (a11y). Bar elements sit on light chrome → accent ring.
   Overlay links sit on the dark surface → accent-lift ring (matches hover). */
body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__toggle:focus-visible,
body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__cta:focus-visible {
	outline: 2px solid var(--accent);
	outline-offset: 2px;
	border-radius: var(--decor-radius-pill, 999px);
}

body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__menu a:focus-visible {
	outline: 2px solid color-mix(in srgb, var(--accent) 60%, var(--on-dark, #ffffff));
	outline-offset: 3px;
	border-radius: var(--decor-radius);
}

/* ---- Mobile: same logic, just tighter type ---- */
@media (max-width: 781px) {
	body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__brand {
		font-size: 1.3rem !important;
	}

	body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__cta {
		padding: 0.55rem 1.05rem;
		font-size: 0.8rem;
	}
}

/* A5: cap uppercase letter-spacing on small screens. */
@media (max-width: 640px) {
	body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__overlay-label {
		letter-spacing: 0 !important;
	}
}

/* Reduced motion: drop overlay/hover transitions (keep visibility toggle snappy). */
@media (prefers-reduced-motion: reduce) {
	body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__overlay,
	body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__overlay[data-open="true"],
	body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__menu a,
	body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__cta,
	body.aibt-universal .universal-nav--minimal-always-hamburger .universal-nav__toggle-bar {
		transition: none;
	}
}