/*
 * OISTE header, navigation and footer adaptations for core blocks.
 * Reproduces PoC section 6 (header/nav) on top of core/navigation (ARCH-1 Option A),
 * plus small adjustments where core block markup differs from the PoC markup.
 * Values come from theme.json presets through the aliases in components.css.
 */

/* ---------- Header ---------- */
.site-header {
	position: sticky;
	top: 0;
	z-index: 50;
	background: rgba(255, 255, 255, 0.96);
	backdrop-filter: saturate(160%) blur(8px);
	border-bottom: 1px solid var(--line);
}

/* backdrop-filter makes the header the containing block for position:fixed
   descendants, which would trap core's full-screen menu overlay inside the
   72px header. Drop it while the modal menu is open (core adds .has-modal-open). */
.has-modal-open .site-header {
	backdrop-filter: none;
	background: var(--surface);
}

.admin-bar .site-header {
	top: var(--wp-admin--admin-bar--height, 0);
}

.site-header__bar {
	min-height: var(--header-h);
	gap: var(--s-5);
}

.site-header .brand {
	margin: 0;
	flex: none;
}

.site-header .brand img {

	/* The image block writes inline height:auto; the PoC logo height (2.6rem) must win. */
	height: 2.6rem !important;
	width: auto !important;
	max-width: none;
}

/* ---------- Top-level items ---------- */
.oiste-nav .wp-block-navigation__container {
	gap: 0.15rem;
}

.wp-block-navigation.oiste-nav .wp-block-navigation-item__content,
.wp-block-navigation.oiste-nav .has-child .wp-block-navigation-submenu__toggle {
	font: 500 var(--fs-sm) / 1 var(--f-sans);
	color: var(--ink);
	padding: 0.75rem 0.8rem;
	border-radius: var(--radius-sm);
	text-decoration: none;
}

.oiste-nav .wp-block-navigation__container > .wp-block-navigation-item > .wp-block-navigation-item__content:hover,
.oiste-nav .wp-block-navigation-submenu__toggle:hover,
.oiste-nav .wp-block-navigation-submenu__toggle[aria-expanded="true"] {
	background: var(--navy-050);
}

/* PoC draws the chevron inside the trigger button (.4rem gap); core renders it as a
   sibling. Reserve the space inside the button and overlay the icon, so spacing
   and the hover background match the mockup. */
.oiste-nav .wp-block-navigation__container > .has-child {
	position: relative;
}

/* Mockup: .8rem padding + .4rem gap + .4rem chevron. */
.wp-block-navigation.oiste-nav .wp-block-navigation__container > .has-child > .wp-block-navigation-submenu__toggle {
	padding-right: calc(0.8rem + 0.4rem + 0.4rem);
}

.oiste-nav .wp-block-navigation__container > .has-child > .wp-block-navigation__submenu-icon {
	position: absolute;
	right: 0.8rem;
	top: 50%;
	transform: translateY(-50%);
	margin: 0;
	opacity: 0.6;
	pointer-events: none;
}

.oiste-nav .is-menu-open .wp-block-navigation__container > .has-child > .wp-block-navigation__submenu-icon {
	position: static;
	transform: none;
}

/* Current section and page (PoC: gold inset underline). */
.oiste-nav .wp-block-navigation__container > .current-menu-item > .wp-block-navigation-item__content,
.oiste-nav .wp-block-navigation__container > .current-menu-ancestor > .wp-block-navigation-submenu__toggle {
	color: var(--navy-600);
	box-shadow: inset 0 -2px 0 var(--gold-500);
}

/* Contact call to action (PoC .btn--primary.nav__cta). */
.oiste-nav .nav__cta {
	margin-left: var(--s-2);
}

/* Same specificity as the current-state rule above, so on /contact/ the button keeps its
   PoC look (no navy-on-navy text, no gold underline); aria-current="page" is kept. */
.oiste-nav .wp-block-navigation__container > .nav__cta > .wp-block-navigation-item__content {
	box-shadow: none;
	border: 1px solid transparent;
	background: var(--navy-600);
	color: #fff;
	font-weight: 600;
	padding: 0.85rem 1.2rem;
}

/* PoC .btn--primary:hover. Matches the specificity of the generic nav-link hover (navy-050),
   which otherwise wins and leaves white text on a near-white background. */
.oiste-nav .wp-block-navigation__container > .nav__cta > .wp-block-navigation-item__content:hover {
	background: var(--navy-700);
	color: #fff;
}

/* ---------- Dropdown panels ---------- */
.oiste-nav .wp-block-navigation__submenu-container {
	min-width: 22rem !important;
	background: var(--surface) !important;
	border: 1px solid var(--line) !important;
	border-radius: var(--radius);
	box-shadow: var(--shadow);
	padding: var(--s-3) !important;
	top: calc(100% + 0.5rem) !important;
}

/* PoC: panels open to the right of their trigger (left: -.5rem);
   Advocacy and About open leftwards (.nav__panel--right). Core right-justified
   navigation would otherwise right-align every panel. */
.oiste-nav .wp-block-navigation__container > .has-child > .wp-block-navigation__submenu-container {
	left: -0.5rem !important;
	right: auto !important;
}

.oiste-nav .wp-block-navigation__container > .panel-right > .wp-block-navigation__submenu-container {
	left: auto !important;
	right: -0.5rem !important;
}

.oiste-nav .wp-block-navigation__submenu-container .wp-block-navigation-item__content {
	display: grid !important;
	gap: 0.15rem;
	padding: 0.65rem 0.75rem;
	line-height: 1.3;
}

.oiste-nav .wp-block-navigation__submenu-container .wp-block-navigation-item__content:hover,
.oiste-nav .wp-block-navigation__submenu-container [aria-current="page"] {
	background: var(--navy-050);
}

.oiste-nav .wp-block-navigation__submenu-container .wp-block-navigation-item__label {
	font-weight: 600;
	font-size: var(--fs-sm);
}

/* Core hides link descriptions by default; the approved design shows them in panels. */
.oiste-nav .wp-block-navigation__submenu-container .wp-block-navigation-item__description {
	display: block;
	font-size: var(--fs-xs);
	font-weight: 400;
	color: var(--ink-3);
	line-height: 1.4;
}

/* "PQC" pill on post-quantum items (PoC .nav__panel .pq). */
.oiste-nav .pq .wp-block-navigation-item__label::after {
	content: "PQC";
	font: 500 0.625rem / 1 var(--f-mono);
	letter-spacing: 0.06em;
	color: var(--pq-700);
	background: var(--pq-100);
	padding: 0.2rem 0.35rem;
	border-radius: 2px;
	margin-left: 0.5rem;
	vertical-align: 0.1em;
}

/* ---------- Mobile: PoC breakpoint 68rem instead of core's 600px ---------- */
@media (max-width: 68rem) {

	.oiste-nav .wp-block-navigation__responsive-container-open:not(.always-shown) {
		display: flex;
	}

	.oiste-nav .wp-block-navigation__responsive-container:not(.hidden-by-default):not(.is-menu-open) {
		display: none;
	}
}

.oiste-nav .wp-block-navigation__responsive-container-open,
.oiste-nav .wp-block-navigation__responsive-container-close {
	border: 1px solid var(--line);
	border-radius: var(--radius-sm);
	padding: 0.55rem 0.75rem;
}

/* Mockup .menu-btn: three-bar icon + visible "Menu" label (the button's accessible name stays core's). */
.wp-block-navigation.oiste-nav .wp-block-navigation__responsive-container-open {
	gap: 0.5rem;
	align-items: center;
	font: 600 var(--fs-sm)/1 var(--f-sans);
	color: var(--ink);
}

.wp-block-navigation.oiste-nav .wp-block-navigation__responsive-container-open svg {
	display: none;
}

.wp-block-navigation.oiste-nav .wp-block-navigation__responsive-container-open::before {
	content: "";
	box-sizing: border-box;
	width: 1.1rem;
	height: 0.8rem;
	border-block: 2px solid currentcolor;
	background: linear-gradient(currentcolor, currentcolor) center / 100% 2px no-repeat;
}

.wp-block-navigation.oiste-nav .wp-block-navigation__responsive-container-open::after {
	content: "Menu";
}

/* Below 24rem the PoC header (238px logo + labelled button) overflows the viewport (v0.2 defect at
   360px). Keep the icon only there; the accessible name ("Open menu") is unchanged. */
@media (max-width: 24rem) {

	.wp-block-navigation.oiste-nav .wp-block-navigation__responsive-container-open::after {
		content: none;
	}
}

.oiste-nav .wp-block-navigation__responsive-container.is-menu-open {
	padding: var(--s-4) var(--gutter) var(--s-7);
	background: var(--surface);
	color: var(--ink);
}

/* The desktop nav is right-justified; the overlay must be left-aligned (PoC mobile rows). */
.oiste-nav .wp-block-navigation__responsive-container.is-menu-open {
	--navigation-layout-justification-setting: flex-start;
	--navigation-layout-justify: flex-start;
	--navigation-layout-align: flex-start;
}

.oiste-nav .is-menu-open .wp-block-navigation__responsive-container-content,
.oiste-nav .is-menu-open .wp-block-navigation__container,
.oiste-nav .is-menu-open .wp-block-navigation__submenu-container {
	align-items: stretch !important;
	text-align: left;
}

.oiste-nav .is-menu-open .wp-block-navigation-item__content,
.oiste-nav .is-menu-open .wp-block-navigation-submenu__toggle {
	width: 100%;
	justify-items: start;
	text-align: left;
}

.oiste-nav .is-menu-open .wp-block-navigation-submenu__toggle {
	background: none;
	font-size: var(--fs-md);
	padding: 1rem 0.25rem;
}

.oiste-nav .is-menu-open .wp-block-navigation__container {
	gap: 0 !important;
	width: 100%;
}

.oiste-nav .is-menu-open .wp-block-navigation-item {
	width: 100%;
}

.oiste-nav .is-menu-open .wp-block-navigation__container > .wp-block-navigation-item {
	border-bottom: 1px solid var(--line-2);
}

.oiste-nav .is-menu-open .wp-block-navigation__submenu-container {
	min-width: 0 !important;
	border: 0 !important;
	box-shadow: none;
	padding: 0 0 var(--s-3) !important;
}

/* WCAG 2.2 2.5.8: top-level links in the overlay were 15px tall. The PoC rows are padded (1rem). */
.wp-block-navigation.oiste-nav .is-menu-open
.wp-block-navigation__container > .wp-block-navigation-item > .wp-block-navigation-item__content {
	padding-block: 0.75rem;
	min-height: 2.75rem;
}

.oiste-nav .is-menu-open .nav__cta {
	margin: var(--s-5) 0 0;
	border-bottom: 0 !important;
}

/* ---------- Footer: core markup differences ---------- */
.site-footer {
	padding-block: 0;
}

.site-footer .footer__brand figure {
	margin: 0 0 var(--s-4);
}

.site-footer .footer__brand img {

	/* The image block writes inline height:auto; the PoC logo height (2.6rem) must win. */
	height: 2.6rem !important;
	width: auto !important;
	max-width: none;
}

.site-footer .footer__col ul,
.site-footer .footer__legal ul {
	margin: 0;
}

.site-footer .footer__contact p {
	margin: 0;
}

.site-footer .footer__contact strong {
	display: block;
	color: #fff;
	font-weight: 600;
	margin-bottom: 0.2rem;
}

.site-footer .footer__social a {
	display: inline-block;
}

.site-footer .footer__legal p {
	margin: 0;
}

/* ---------- Content helpers ---------- */
.oiste-content > * + * {
	margin-block-start: var(--s-4);
}

.page-hero__inner > * {
	margin: 0;
}

/* ---------- Core layout differences (Checkpoint 2 visual comparison) ---------- */

/* No page-background strip between template parts (PoC: header, main and footer touch). */
.wp-site-blocks > * + * {
	margin-block-start: 0;
}

/* Page hero: PoC aligns the 52rem inner block to the left content edge.
   Constrained layout would centre it, so the inner box spans the wrap
   and only its children are limited. */
.page-hero > .page-hero__inner {
	max-width: var(--wrap) !important;
	display: grid;
	gap: var(--s-4);
}

.page-hero__inner > .wp-block-post-title,
.page-hero__inner > h1,
.page-hero__inner > .lead,
.page-hero__inner > .wp-block-post-excerpt {
	max-width: 52rem;
}

.page-hero__inner > .lead,
.page-hero__inner > .wp-block-post-excerpt {
	max-width: 42rem;
}

/* Grid utilities: flow-layout margins must not offset grid items. */
.grid-2 > *,
.grid-3 > *,
.grid-4 > *,
.news > * {
	margin-block: 0;
}

/* Cards: PoC uses flex gap, not flow margins. */
.card > * {
	margin-block: 0;
}

/* Link cards: whole card clickable (PoC wraps the card in <a>);
   here the heading link is stretched, keeping one accessible link name. */
.card--link {
	position: relative;
}

.card--link :is(h2, h3, h4) a {
	color: inherit;
	text-decoration: none;
}

.card--link :is(h2, h3, h4) a::after {
	content: "";
	position: absolute;
	inset: 0;
}

.card--link:hover :is(h2, h3, h4) {
	color: var(--navy-600);
}

.card--link:focus-within {
	outline: 2px solid var(--focus);
	outline-offset: 3px;
}

.card--link :is(h2, h3, h4) a:focus-visible {
	outline: none;
}