/* ==========================================================================
   SITE HEADER + PRIMARY NAVIGATION
   Markup: components/blocks/parts/nav.php   Behaviour: js/navigation.js
   Tokens from css/main.css.
   ========================================================================== */

:root {
  --header-height: 4.5rem;
  --logo-height: 2.75rem;
}

.site-header {
  position: relative;
  z-index: 50;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  min-height: var(--header-height);
}

/* --- Logo --- */
.site-logo {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--color-dark);
}
.site-logo__img {
  display: block;
  width: auto;
  height: var(--logo-height);
  max-width: 14rem;
  object-fit: contain;
}
.site-logo__text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: var(--font-weight-extrabold);
  letter-spacing: var(--letter-spacing-tight);
}

/* --- Menu list (shared by wp_nav_menu and the wp_page_menu fallback) --- */
.site-nav__list,
.site-nav__list ul,
.site-nav .menu,
.site-nav .menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__list a,
.site-nav .menu a {
  display: block;
  padding: 0.5rem 0.9rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-dark);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--t-fast), background-color var(--t-fast);
}
.site-nav__list a:hover,
.site-nav__list a:focus-visible,
.site-nav .menu a:hover,
.site-nav .menu a:focus-visible {
  color: var(--color-accent);
}
.site-nav__list .current-menu-item > a,
.site-nav__list .current-menu-ancestor > a,
.site-nav__list .current_page_item > a,
.site-nav__list .current_page_ancestor > a {
  color: var(--color-accent);
}

.site-nav__notice {
  margin: 0.5rem 0 0;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* --- Toggle (hamburger) --- */
.site-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}
.site-nav-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  margin: 0 auto;
  background: var(--color-dark);
  border-radius: 2px;
  transition: transform var(--t-fast), opacity var(--t-fast);
}
.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(2) { opacity: 0; }
.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.site-nav-toggle:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; border-radius: var(--radius-sm); }

/* --- Desktop --- */
@media (min-width: 992px) {
  .site-nav__list,
  .site-nav .menu {
    display: flex;
    align-items: center;
    gap: 0.25rem;
  }

  /* Dropdowns: open on hover and on keyboard focus within */
  .site-nav__list > li { position: relative; }
  .site-nav__list > li > ul {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 14rem;
    padding: 0.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(0.5rem);
    transition: opacity var(--t-fast), transform var(--t-fast), visibility var(--t-fast);
  }
  .site-nav__list > li:hover > ul,
  .site-nav__list > li:focus-within > ul {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .site-nav__list > li > ul a { font-weight: var(--font-weight-regular); }
  .site-nav__list > .menu-item-has-children > a::after {
    content: '';
    display: inline-block;
    width: 0.4em;
    height: 0.4em;
    margin-left: 0.4em;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: translateY(-0.15em) rotate(45deg);
  }
}

/* --- Mobile --- */
@media (max-width: 991px) {
  .site-nav-toggle { display: flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    padding: var(--space-sm) var(--space-gutter) var(--space-lg);
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
  }
  .site-nav.is-open { display: block; }

  .site-nav__list a,
  .site-nav .menu a {
    padding: 0.75rem 0.5rem;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
  }
  .site-nav__list > li > ul a {
    padding-left: 1.5rem;
    font-weight: var(--font-weight-regular);
    font-size: 0.95rem;
  }
  .site-nav__list > li:last-child > a { border-bottom: 0; }

  body.nav-open { overflow: hidden; }
}