/* ==========================================================================
   ENAF Theme — 4. Layout (containers, grids, sections, header, footer)
   ========================================================================== */
.container { width: min(var(--container), 100% - var(--gutter) * 2); margin-inline: auto; }
.container--wide { width: min(var(--container-wide), 100% - var(--gutter) * 2); }
.container--narrow { width: min(var(--container-narrow), 100% - var(--gutter) * 2); }

.section { padding-block: var(--section-y); }
.section--sm { padding-block: var(--section-y-sm); }
.section--flush-top { padding-top: 0; }
.section--flush-bottom { padding-bottom: 0; }
.section--surface { background: var(--color-surface); }
.section--tint { background: var(--color-primary-tint); }
.section--dark { background: var(--color-primary-deep); color: var(--color-text-on-dark); }
.section--dark :is(h1, h2, h3, h4) { color: var(--color-text-on-dark); }
.section--dark p, .section--dark .lead { color: var(--color-text-on-dark-secondary); }
.section--dark a { color: var(--color-text-on-dark); }
.section--primary { background: var(--color-primary); color: var(--color-on-primary); }
.section--primary :is(h1, h2, h3, h4, p, a) { color: var(--color-on-primary); }
.section--bordered { border-top: 1px solid var(--color-border); }

.grid { display: grid; gap: var(--grid-gap); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.split { display: grid; gap: var(--grid-gap); align-items: center; grid-template-columns: repeat(12, minmax(0, 1fr)); }
.split > .split__a { grid-column: span 12; }
.split > .split__b { grid-column: span 12; }
@media (min-width: 64em) {
  .split--5-7 > .split__a { grid-column: 1 / span 5; }
  .split--5-7 > .split__b { grid-column: 7 / span 6; }
  .split--7-5 > .split__a { grid-column: 1 / span 7; }
  .split--7-5 > .split__b { grid-column: 8 / span 5; }
  .split--6-6 > .split__a { grid-column: 1 / span 6; }
  .split--6-6 > .split__b { grid-column: 7 / span 6; }
  .split--4-8 > .split__a { grid-column: 1 / span 4; }
  .split--4-8 > .split__b { grid-column: 6 / span 7; }
  .split--rev > .split__a { order: 2; }
  .split--rev > .split__b { order: 1; }
}
@media (max-width: 63.99em) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 40em) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }
}

.stack > * + * { margin-top: var(--space-4); }
.stack--lg > * + * { margin-top: var(--space-6); }
.cluster { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-4); align-items: center; }

/* Skip link */
.skip-link { position: absolute; top: var(--space-3); left: var(--space-3); z-index: var(--z-skip); padding: var(--space-3) var(--space-4); background: var(--color-bg); color: var(--color-primary); font-weight: 600; border-radius: var(--radius-sm); box-shadow: var(--shadow-md); transform: translateY(-200%); transition: transform var(--dur-fast) var(--ease-out); text-decoration: none; }
.skip-link:focus { transform: none; }

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: var(--z-header);
  height: var(--header-height);
  background: var(--color-bg);
  border-bottom: 1px solid transparent;
  transition: background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}
.site-header.is-stuck { border-color: var(--color-border); box-shadow: var(--shadow-sm); }
.site-header__inner { height: 100%; display: flex; align-items: center; gap: var(--space-6); }
.site-header__brand { display: inline-flex; align-items: center; gap: var(--space-3); text-decoration: none; color: var(--color-text); flex-shrink: 0; }
.site-header__brand img { height: 2.75rem; width: auto; }
.site-header__brand .wordmark { font-family: var(--font-display); font-weight: 700; letter-spacing: var(--tracking-snug); line-height: 1.1; font-size: 1rem; }
.site-header__brand .wordmark small { display: block; font-weight: 500; font-size: var(--text-meta); color: var(--color-text-muted); letter-spacing: var(--tracking-normal); }
.site-header__nav { margin-left: auto; display: none; }
.site-header__actions { display: flex; align-items: center; gap: var(--space-3); margin-left: auto; }
@media (min-width: 64em) {
  .site-header__nav { display: block; }
  .site-header__actions { margin-left: 0; }
}

/* Transparent header over front-page hero */
.has-transparent-header .site-header:not(.is-stuck):not(.is-open) { background: transparent; color: var(--color-text-on-dark); }
.has-transparent-header .site-header:not(.is-stuck):not(.is-open) .site-header__brand { color: var(--color-text-on-dark); }
.has-transparent-header .site-header:not(.is-stuck):not(.is-open) .wordmark small { color: var(--color-text-on-dark-secondary); }
.has-transparent-header .site-header:not(.is-stuck):not(.is-open) .site-header__brand img { filter: brightness(0) invert(1); }
.has-transparent-header .site-header:not(.is-stuck):not(.is-open) .nav__link { color: var(--color-text-on-dark); }
.has-transparent-header .site-header:not(.is-stuck):not(.is-open) .nav__link::after { background: var(--color-text-on-dark); }
.has-transparent-header .site-header:not(.is-stuck):not(.is-open) .btn--ghost { color: var(--color-text-on-dark); border-color: var(--color-line-on-dark-strong); }
.has-transparent-header .site-header:not(.is-stuck):not(.is-open) .menu-toggle { color: var(--color-text-on-dark); }
.has-transparent-header .site-header { position: fixed; left: 0; right: 0; }
.has-transparent-header .site-header.is-stuck { position: sticky; }
.has-transparent-header .site-main { margin-top: 0; }

/* Primary nav */
.nav { display: flex; align-items: center; gap: var(--space-1); }
.nav__item { position: relative; }
.nav__link {
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.6rem 0.85rem;
  font-size: var(--text-nav); font-weight: 500; letter-spacing: var(--tracking-normal);
  color: var(--color-text); text-decoration: none; border-radius: var(--radius-sm);
  position: relative; background: none;
  transition: color var(--dur-fast) var(--ease-out);
}
.nav__link::after { content: ""; position: absolute; left: 0.85rem; right: 0.85rem; bottom: 0.3rem; height: 2px; background: var(--color-primary); transform: scaleX(0); transform-origin: left; transition: transform var(--dur) var(--ease-out); border-radius: 1px; }
.nav__item:hover > .nav__link::after, .nav__item.is-open > .nav__link::after, .nav__item.current-menu-item > .nav__link::after, .nav__item.current-menu-ancestor > .nav__link::after { transform: scaleX(1); }
.nav__link svg { width: 0.75rem; height: 0.75rem; transition: transform var(--dur-fast) var(--ease-out); }
.nav__item.is-open > .nav__link svg { transform: rotate(180deg); }

/* Mega panel */
.mega {
  position: absolute; top: calc(100% + 0.5rem); left: 50%;
  transform: translate(-50%, 8px);
  min-width: 34rem; max-width: min(56rem, calc(100vw - 2 * var(--gutter)));
  background: var(--color-bg); color: var(--color-text);
  border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-6);
  display: grid; grid-template-columns: minmax(14rem, 1fr) 2fr; gap: var(--space-6);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out), visibility 0s linear var(--dur);
}
.nav__item.is-open > .mega { opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%, 0); transition-delay: 0s; }
.mega__intro { padding-right: var(--space-6); border-right: 1px solid var(--color-border); }
.mega__intro h3 { font-size: var(--text-h4); margin-bottom: var(--space-2); }
.mega__intro p { font-size: var(--text-small); color: var(--color-text-secondary); }
.mega__intro .link { margin-top: var(--space-4); }
.mega__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 var(--space-5); list-style: none; padding: 0; margin: 0; }
.mega__list li { border-bottom: 1px solid var(--color-border); }
.mega__list a { display: flex; align-items: baseline; gap: var(--space-3); padding: 0.7rem 0.25rem; font-size: var(--text-small); font-weight: 500; color: var(--color-text); text-decoration: none; border-radius: var(--radius-sm); transition: color var(--dur-fast) var(--ease-out), padding-left var(--dur-fast) var(--ease-out); }
.mega__list a:hover, .mega__list a:focus-visible { color: var(--color-primary); padding-left: 0.6rem; }
.mega__list .num { font-family: var(--font-display); font-size: var(--text-meta); color: var(--color-text-muted); font-weight: 600; min-width: 1.5rem; }
.mega--simple { grid-template-columns: 1fr; min-width: 16rem; }
.mega--simple .mega__list { grid-template-columns: 1fr; }
.nav__item.mega-parent--right .mega { left: auto; right: 0; transform: translate(0, 8px); }
.nav__item.mega-parent--right.is-open > .mega { transform: translate(0, 0); }

/* Mobile toggle + overlay */
.menu-toggle { display: inline-flex; align-items: center; justify-content: center; width: 2.75rem; height: 2.75rem; border-radius: var(--radius-pill); color: var(--color-text); border: 1px solid var(--color-border); transition: background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out); }
.menu-toggle:hover { background: var(--color-surface); }
.menu-toggle svg { width: 1.25rem; height: 1.25rem; }
.menu-toggle .icon-close { display: none; }
.menu-toggle[aria-expanded="true"] .icon-open { display: none; }
.menu-toggle[aria-expanded="true"] .icon-close { display: block; }
@media (min-width: 64em) { .menu-toggle { display: none; } }

.mobile-nav {
  position: fixed; inset: var(--header-height) 0 0 0; z-index: calc(var(--z-header) - 1);
  background: var(--color-bg); color: var(--color-text);
  display: flex; flex-direction: column;
  transform: translateY(-8px); opacity: 0; visibility: hidden;
  transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out), visibility 0s linear var(--dur);
}
.mobile-nav.is-open { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
.mobile-nav__scroll { flex: 1; overflow-y: auto; padding: var(--space-4) var(--gutter) var(--space-6); }
.mobile-nav__list { list-style: none; margin: 0; padding: 0; }
.mobile-nav__item { border-bottom: 1px solid var(--color-border); }
.mobile-nav__link, .mobile-nav__toggle {
  display: flex; align-items: center; justify-content: space-between; width: 100%;
  padding: 1rem 0; font-family: var(--font-display); font-size: 1.5rem; font-weight: 600; letter-spacing: var(--tracking-snug);
  color: var(--color-text); text-decoration: none; text-align: left;
}
.mobile-nav__toggle svg { width: 1.1rem; height: 1.1rem; color: var(--color-text-muted); transition: transform var(--dur-fast) var(--ease-out); }
.mobile-nav__toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
.mobile-nav__sub { list-style: none; margin: 0; padding: 0 0 var(--space-4) var(--space-4); display: none; }
.mobile-nav__toggle[aria-expanded="true"] + .mobile-nav__sub { display: block; }
.mobile-nav__sub a { display: block; padding: 0.6rem 0; font-size: 1.0625rem; font-weight: 500; color: var(--color-text-secondary); text-decoration: none; }
.mobile-nav__sub a:hover { color: var(--color-primary); }
.mobile-nav__footer { padding: var(--space-4) var(--gutter) calc(var(--space-4) + env(safe-area-inset-bottom)); border-top: 1px solid var(--color-border); background: var(--color-bg); display: grid; gap: var(--space-3); }
.mobile-nav__footer .btn { width: 100%; }
.mobile-nav__meta { font-size: var(--text-meta); color: var(--color-text-muted); }
body.nav-open { overflow: hidden; }
@media (min-width: 64em) { .mobile-nav { display: none; } }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer { background: var(--color-primary-deep); color: var(--color-text-on-dark-secondary); padding-block: var(--space-10) var(--space-6); }
.site-footer a { color: var(--color-text-on-dark); text-decoration: none; }
.site-footer a:hover { color: var(--color-primary-tint-3); }
.site-footer__grid { display: grid; gap: var(--space-8); grid-template-columns: 1fr; }
@media (min-width: 48em) { .site-footer__grid { grid-template-columns: 1.4fr 1fr 1fr; } }
@media (min-width: 64em) { .site-footer__grid { grid-template-columns: 1.6fr 1fr 1fr 1.2fr; } }
.site-footer__brand .wordmark { font-family: var(--font-display); font-size: 1.375rem; font-weight: 700; color: var(--color-text-on-dark); line-height: 1.15; }
.site-footer__brand .tagline { margin-top: var(--space-3); max-width: 34ch; font-size: var(--text-small); }
.site-footer__brand .mission { margin-top: var(--space-5); font-size: var(--text-small); max-width: 40ch; color: var(--color-primary-tint-3); }
.site-footer h3 { font-size: var(--text-meta); font-weight: 600; letter-spacing: var(--tracking-caps); text-transform: uppercase; color: var(--color-primary-tint-3); margin-bottom: var(--space-4); }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--space-2); font-size: var(--text-small); }
.site-footer address { font-style: normal; font-size: var(--text-small); line-height: var(--leading-relaxed); }
.site-footer__social { display: flex; gap: var(--space-2); margin-top: var(--space-4); }
.site-footer__social a { display: inline-grid; place-items: center; width: 2.5rem; height: 2.5rem; border: 1px solid var(--color-line-on-dark); border-radius: var(--radius-pill); transition: background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out); }
.site-footer__social a:hover { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-on-primary); }
.site-footer__social svg { width: 1.05rem; height: 1.05rem; }
.site-footer__bottom { margin-top: var(--space-9); padding-top: var(--space-5); border-top: 1px solid var(--color-line-on-dark); display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-6); justify-content: space-between; font-size: var(--text-meta); }
.site-footer__bottom ul { display: flex; flex-wrap: wrap; gap: var(--space-4); }

/* Main */
.site-main { min-height: 50vh; }

/* Small screens: the logo mark carries the name, so drop the wordmark. */
@media (max-width: 40em) {
  .site-header__brand .wordmark { display: none; }
  .site-header__brand img { height: 2.9rem; }
  .site-header__inner { gap: var(--space-3); }
}

/* WordPress admin bar (logged-in editors only) ------------------------------
   Keeps the sticky/transparent header and the mobile overlay below the toolbar
   so the site looks the same signed in as it does to visitors. */
.admin-bar .site-header { top: 32px; }
.admin-bar .mobile-nav { top: calc(var(--header-height) + 32px); }
@media screen and (max-width: 782px) {
  .admin-bar .site-header { top: 46px; }
  .admin-bar .mobile-nav { top: calc(var(--header-height) + 46px); }
}
@media screen and (max-width: 600px) {
  /* The toolbar scrolls away at this width, so a stuck header returns to the top. */
  .admin-bar .site-header.is-stuck,
  .admin-bar:not(.has-transparent-header) .site-header { top: 0; }
}