/* =========================================================
   header.css — sticky site header.
   Compact, modern, with inline search panel.
   ========================================================= */

:root {
	--header-h: 60px;
}

.site-header {
	position: sticky;
	top: 0;
	z-index: 100;
	background: rgba(255, 255, 255, .92);
	backdrop-filter: saturate(180%) blur(12px);
	-webkit-backdrop-filter: saturate(180%) blur(12px);
	border-bottom: 1px solid transparent;
	transition: border-color .2s ease, box-shadow .2s ease;
}
.site-header.is-scrolled {
	border-bottom-color: var(--surface-border);
	box-shadow: 0 1px 0 rgba(15,23,42,.02);
}

.site-header__inner {
	max-width: var(--site-max);
	margin: 0 auto;
	padding: 0 var(--space-4);
	display: flex;
	align-items: center;
	gap: var(--space-4);
	min-height: var(--header-h);
}

.site-header__left {
	display: flex;
	align-items: center;
}
.site-header__left { flex-shrink: 0; } /* A long translated button label squeezed the logo to nothing at 320px. */
.site-logo-link { display: inline-flex; }
.site-logo {
	display: block;
	transition: transform .2s ease;
}
.site-logo-link:hover .site-logo { transform: scale(1.04); }

.site-header__nav {
	flex: 1;
	display: flex;
	justify-content: flex-start;
	margin-left: var(--space-4);
}
.main-menu {
	display: flex;
	gap: var(--space-2);
	align-items: center;
	padding: 0;
	margin: 0;
	list-style: none;
}
.main-menu a {
	color: var(--text-default);
	text-decoration: none;
	font-weight: 600;
	font-size: .92rem;
	padding: var(--space-2) var(--space-3);
	border-radius: 8px;
	transition: background .15s ease, color .15s ease;
}
.main-menu a:hover {
	background: rgba(30,136,229,.08);
	color: var(--sonix-blue);
}
.main-menu .current-menu-item > a,
.main-menu .current_page_item > a {
	color: var(--sonix-blue);
}
.main-menu .sub-menu {
	position: absolute;
	background: #fff;
	border: 1px solid var(--surface-border);
	border-radius: 10px;
	padding: var(--space-2);
	min-width: 220px;
	box-shadow: var(--shadow-card-h);
	display: none;
	margin-top: var(--space-1);
	z-index: 10;
	list-style: none;
}
.main-menu li { position: relative; }
.main-menu li:hover > .sub-menu,
.main-menu li:focus-within > .sub-menu { display: block; }
.main-menu .sub-menu a { display: block; }

/* ----- Right side: search, sign in, CTA ----- */
.site-header__right {
	display: flex;
	align-items: center;
	gap: var(--space-2);
	margin-left: auto;
	min-width: 0;
}
.site-header__right .btn { min-width: 0; }
.site-header__right .site-search-toggle { flex-shrink: 0; }

.site-search-toggle {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 36px;
	height: 36px;
	padding: 0;
	border: 0;
	background: transparent;
	color: var(--text-default);
	border-radius: 8px;
	cursor: pointer;
	transition: background .15s ease, color .15s ease;
}
.site-search-toggle:hover {
	background: rgba(30,136,229,.08);
	color: var(--sonix-blue);
}
.site-search-toggle[aria-expanded="true"] {
	background: var(--sonix-blue);
	color: #fff;
}

.site-header__signin {
	color: var(--text-default);
	text-decoration: none;
	font-weight: 600;
	font-size: .92rem;
	padding: var(--space-2) var(--space-3);
	border-radius: 8px;
	transition: background .15s ease, color .15s ease;
}
.site-header__signin:hover {
	background: rgba(30,136,229,.08);
	color: var(--sonix-blue);
}

/* Small variant of the filled CTA used in the header */
.btn--sm {
	padding: .5rem .9rem;
	font-size: .88rem;
}

/* ----- Search panel (slides down beneath the header) ----- */
.site-search-panel {
	border-top: 1px solid var(--surface-border);
	background: #fff;
	box-shadow: 0 10px 24px rgba(15,23,42,.08);
}
.site-search-panel[hidden] { display: none; }
.site-search-panel__form {
	max-width: var(--site-max);
	margin: 0 auto;
	padding: var(--space-3) var(--space-4);
	display: flex;
	align-items: center;
	gap: var(--space-2);
	position: relative;
}
.site-search-panel__icon {
	color: var(--text-quiet);
	flex-shrink: 0;
}
.site-search-panel__form input[type="search"] {
	flex: 1;
	border: 0;
	background: transparent;
	font-size: 1.1rem;
	font-family: var(--font-prose);
	color: var(--text-strong);
	padding: var(--space-2) 0;
}
.site-search-panel__form input[type="search"]:focus {
	outline: none;
}
.site-search-panel__close {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 36px;
	height: 36px;
	border: 0;
	background: transparent;
	color: var(--text-muted);
	border-radius: 8px;
	cursor: pointer;
	transition: background .15s ease, color .15s ease;
}
.site-search-panel__close:hover {
	background: rgba(15,23,42,.06);
	color: var(--text-strong);
}

/* ----- Mobile menu toggle ----- */
.menu-toggle {
	display: none;
	border: 0;
	background: transparent;
	padding: 8px;
	border-radius: 8px;
	cursor: pointer;
}
.menu-toggle:hover { background: rgba(15,23,42,.06); }
.menu-toggle__bar {
	display: block;
	width: 22px;
	height: 2px;
	background: var(--text-strong);
	margin: 5px 0;
	border-radius: 2px;
	transition: transform .15s ease, opacity .15s ease;
}
.site-header.menu-open .menu-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-header.menu-open .menu-toggle__bar:nth-child(2) { opacity: 0; }
.site-header.menu-open .menu-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 900px) {
	.site-header__nav .main-menu { display: none; }
	.menu-toggle { display: block; }

	.site-header.menu-open .main-menu {
		display: flex;
		flex-direction: column;
		gap: 0;
		position: absolute;
		left: 0; right: 0; top: 100%;
		background: #fff;
		border-top: 1px solid var(--surface-border);
		border-bottom: 1px solid var(--surface-border);
		padding: var(--space-3) var(--space-4);
		box-shadow: 0 12px 24px rgba(15,23,42,.08);
	}
	.site-header.menu-open .main-menu li {
		border-bottom: 1px solid var(--surface-border);
	}
	.site-header.menu-open .main-menu li:last-child {
		border-bottom: 0;
	}
	.site-header.menu-open .main-menu a {
		padding: var(--space-3) 0;
		display: block;
		border-radius: 0;
	}
	.site-header.menu-open .main-menu .sub-menu {
		position: static;
		box-shadow: none;
		border: 0;
		padding: 0 0 var(--space-2) var(--space-4);
		display: block;
	}
}

@media (max-width: 720px) {
	.site-header__signin { display: none; }
}

@media (max-width: 480px) {
	.site-header__inner { gap: var(--space-2); padding: 0 var(--space-3); }
	/* The logo no longer shrinks, so the button is trimmed to keep the English
	   label on one line at 320px. Longer translations wrap onto a second line. */
	.site-header__right .btn { padding: .5rem .8rem; font-size: .82rem; }
	.site-search-panel__form { padding: var(--space-3); }
	.site-search-panel__form input[type="search"] { font-size: 1rem; }
}