.site-header {
	position: sticky;
	z-index: var(--jai-z-header);
	top: 0;
	padding: 0.75rem 0 0;
	background: transparent;
}

.site-header__shell {
	width: min(calc(100% - 2rem), var(--jai-container-wide));
	margin-inline: auto;
	padding: 0.5rem 0.85rem 0.5rem 1.25rem;
	border-radius: var(--jai-radius-2xl);
	background: rgba(255, 255, 255, 0.78);
	border: 1px solid var(--jai-color-border);
	backdrop-filter: blur(14px);
	-webkit-backdrop-filter: blur(14px);
	box-shadow: 0 12px 35px rgba(15, 23, 42, 0.06);
	transition: background var(--jai-transition), border-color var(--jai-transition), box-shadow var(--jai-transition);
}

html.dark .site-header__shell {
	background: rgba(15, 23, 42, 0.65);
	border-color: rgba(241, 245, 249, 0.08);
	box-shadow: 0 12px 35px rgba(0, 0, 0, 0.35);
}

.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	min-height: 3.25rem;
	gap: var(--jai-space-md);
}

.site-branding {
	display: inline-flex;
	align-items: center;
	gap: 0.6rem;
	text-decoration: none;
}

.site-branding__name {
	color: var(--jai-color-text);
	font-size: 1.05rem;
	font-weight: 800;
	letter-spacing: -0.01em;
	text-decoration: none;
}

.site-branding__description {
	display: none;
	margin: 0;
	color: var(--jai-color-muted);
	font-size: 0.78rem;
	line-height: 1.3;
}

.custom-logo-link {
	display: inline-flex;
	align-items: center;
}

.custom-logo {
	max-height: 2.4rem;
	width: auto;
}

/* Toggle (mobile hamburger) */
.site-header__toggle {
	position: relative;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 2.75rem;
	height: 2.75rem;
	padding: 0;
	border: 1px solid var(--jai-color-border);
	border-radius: var(--jai-radius-lg);
	background: var(--jai-color-surface);
	color: var(--jai-color-text);
	cursor: pointer;
	-webkit-tap-highlight-color: transparent;
	transition: border-color var(--jai-transition), background var(--jai-transition), color var(--jai-transition), box-shadow var(--jai-transition), transform var(--jai-transition);
}

.site-header__toggle:hover {
	border-color: transparent;
	background: var(--jai-color-brand-50);
	color: var(--jai-color-brand-700);
}

html.dark .site-header__toggle:hover {
	background: rgba(124, 58, 237, 0.22);
	color: var(--jai-color-brand-200);
}

.site-header__toggle:focus-visible {
	outline: none;
	border-color: transparent;
	box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.28);
}

.site-header__toggle:active {
	transform: scale(0.94);
}

.site-header__toggle[aria-expanded="true"] {
	border-color: transparent;
	background: var(--jai-color-brand-600);
	color: var(--jai-color-white);
}

html.dark .site-header__toggle[aria-expanded="true"] {
	background: var(--jai-color-brand-600);
	color: #ffffff;
}

/*
 * Hamburger icon: the element itself is the middle bar,
 * its ::before / ::after are the top / bottom bars.
 * On open it morphs into a centred "X".
 */
.site-header__toggle-icon,
.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
	position: absolute;
	left: 50%;
	width: 1.25rem;
	height: 2px;
	margin-left: -0.625rem;
	border-radius: var(--jai-radius-full);
	background: currentColor;
	transition: transform var(--jai-transition-slow), opacity var(--jai-transition), background var(--jai-transition);
}

.site-header__toggle-icon {
	top: 50%;
	margin-top: -1px;
}

.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
	content: "";
}

.site-header__toggle-icon::before {
	transform: translateY(-0.4rem);
}

.site-header__toggle-icon::after {
	transform: translateY(0.4rem);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon {
	background: transparent;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::before {
	transform: rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::after {
	transform: rotate(-45deg);
}

@media (prefers-reduced-motion: reduce) {
	.site-header__toggle,
	.site-header__toggle-icon,
	.site-header__toggle-icon::before,
	.site-header__toggle-icon::after {
		transition: none;
	}
}

/* Mobile panel + nav */
.site-header__nav {
	position: fixed;
	z-index: var(--jai-z-menu);
	inset: 4.5rem 1rem auto;
	display: grid;
	gap: var(--jai-space-md);
	padding: var(--jai-space-lg);
	background: var(--jai-color-bg);
	border: 1px solid var(--jai-color-border);
	border-radius: var(--jai-radius-2xl);
	box-shadow: var(--jai-shadow-card);
	opacity: 0;
	pointer-events: none;
	transform: translateY(-0.5rem);
	transition: opacity var(--jai-transition), transform var(--jai-transition);
}

.site-header__nav.is-open {
	opacity: 1;
	pointer-events: auto;
	transform: none;
}

.menu {
	display: flex;
	flex-direction: column;
	gap: var(--jai-space-xs);
	margin: 0;
	padding: 0;
	list-style: none;
}

.menu a {
	display: inline-flex;
	align-items: center;
	min-height: 2.6rem;
	padding: 0.35rem 0.6rem;
	border-radius: var(--jai-radius-md);
	color: var(--jai-color-text);
	font-weight: 600;
	font-size: 0.95rem;
	text-decoration: none;
	transition: color var(--jai-transition), background var(--jai-transition);
}

.menu a:hover,
.menu .current-menu-item > a {
	color: var(--jai-color-brand-600);
}

/* Header right-side actions */
.site-header__actions {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
}

.site-header__icon-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 2.5rem;
	height: 2.5rem;
	padding: 0;
	border: 1px solid var(--jai-color-border);
	border-radius: var(--jai-radius-lg);
	background: transparent;
	color: var(--jai-color-text);
	text-decoration: none;
	cursor: pointer;
	transition: border-color var(--jai-transition), color var(--jai-transition), background var(--jai-transition), transform var(--jai-transition);
}

.site-header__icon-btn:hover,
.site-header__icon-btn:focus-visible {
	border-color: transparent;
	background: var(--jai-color-brand-50);
	color: var(--jai-color-brand-700);
	outline: none;
}

html.dark .site-header__icon-btn:hover,
html.dark .site-header__icon-btn:focus-visible {
	background: rgba(124, 58, 237, 0.22);
	color: var(--jai-color-brand-200);
}

.site-header__icon-btn:focus-visible {
	box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.28);
}

.site-header__icon-btn i {
	font-size: 1rem;
	line-height: 1;
}

/* Mobile nav footer (inside drawer): theme toggle + CTA stacked below menu */
.site-header__nav-foot {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--jai-space-sm);
	margin-top: var(--jai-space-sm);
	padding-top: var(--jai-space-md);
	border-top: 1px solid var(--jai-color-border);
}

.site-header__nav-foot .site-header__cta {
	flex: 1 1 auto;
}

.site-header__cta {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.4rem;
	min-height: 2.5rem;
	padding: 0.5rem 1rem;
	border-radius: var(--jai-radius-lg);
	background: var(--jai-color-brand-600);
	color: #ffffff;
	font-weight: 600;
	font-size: 0.9rem;
	text-decoration: none;
	box-shadow: 0 6px 18px rgba(124, 58, 237, 0.28);
	transition: background var(--jai-transition), box-shadow var(--jai-transition), transform var(--jai-transition);
}

.site-header__cta:hover {
	background: var(--jai-color-brand-700);
	color: #ffffff;
	transform: translateY(-1px);
	box-shadow: var(--jai-shadow-glow-strong);
}

body.has-open-menu {
	overflow: hidden;
}

/* Default (mobile): hide the desktop-side theme + CTA, hamburger stays visible */
.site-header__actions .site-header__theme,
.site-header__actions .site-header__cta {
	display: none;
}

@media (min-width: 760px) {
	.site-branding__description {
		display: block;
	}
}

@media (min-width: 1024px) {
	body.has-open-menu {
		overflow: auto;
	}

	.site-header {
		padding-top: 1rem;
	}

	.site-header__shell {
		padding: 0.55rem 0.65rem 0.55rem 1.5rem;
	}

	.site-header__toggle {
		display: none;
	}

	.site-header__nav {
		position: static;
		display: flex;
		align-items: center;
		gap: var(--jai-space-md);
		padding: 0;
		background: transparent;
		border: 0;
		box-shadow: none;
		opacity: 1;
		pointer-events: auto;
		transform: none;
	}

	.site-header__nav-foot {
		display: none;
	}

	.site-header__actions .site-header__theme,
	.site-header__actions .site-header__cta {
		display: inline-flex;
	}

	.menu {
		flex-direction: row;
		align-items: center;
		gap: 0.25rem;
	}

	.menu a {
		padding: 0.45rem 0.85rem;
	}
}