/*
 * 50 — Site header
 * utility bar · brand row · primary nav (with dropdowns).
 * Below 64rem the nav collapses behind the menu button (JS: modules/nav.js).
 */
.utility-bar { color: #dce9e5; font-size: 0.6875rem; }
.utility-bar__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 2.75rem; }
.utility-bar__tagline { letter-spacing: 0.06em; }
.utility-bar__links { display: none; align-items: center; gap: 1.75rem; }
.utility-bar__links a { color: #b9cfc9; }
.utility-bar__links a:hover { color: #fff; }
@media (min-width: 40rem) { .utility-bar__links { display: flex; } }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 2px rgba(28, 43, 69, 0.06);
}
/* Blue + green "split rule" under the header, from the seal's ring */
.site-header::after {
  content: '';
  position: absolute;
  inset: auto 0 -1px 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue) 0 46%, transparent 46% 48%, var(--green) 48% 96%, transparent 96%);
  pointer-events: none;
}

.site-header__bar { display: flex; align-items: center; justify-content: space-between; gap: 2rem; min-height: 4.75rem; padding-block: 0.75rem; transition: min-height 300ms var(--ease), padding 300ms var(--ease); }

.brand { display: flex; align-items: center; gap: 1.1rem; min-width: 0; flex: 1 1 auto; }
.brand__seal { flex: none; width: 3.5rem; height: 3.5rem; object-fit: contain; }
.brand__name { display: block; font-family: var(--font-display); font-size: 1.75rem; font-weight: 900; line-height: 1.1; letter-spacing: 0.015em; white-space: nowrap; color: var(--slate); -webkit-text-stroke: 0.6px currentColor; }

.header-actions { display: none; gap: 0.75rem; flex: none; }
.nav-actions { display: flex; gap: 0.75rem; margin-top: 1.5rem; }
.nav-actions .btn { flex: 1; padding-inline: 0.5rem; }

.nav-toggle {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  background: none;
  border: 0;
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--slate);
  content: '';
  transition: transform var(--transition), background-color var(--transition);
}
.nav-toggle__bars { position: relative; }
.nav-toggle__bars::before { position: absolute; top: -7px; }
.nav-toggle__bars::after { position: absolute; top: 7px; }
.site-header[data-open] .nav-toggle__bars { background: transparent; }
.site-header[data-open] .nav-toggle__bars::before { transform: translateY(7px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { transform: translateY(-7px) rotate(-45deg); }

/* Mobile / tablet panel */
.site-nav { display: none; border-top: 1px solid var(--border); background: var(--white); max-height: calc(100vh - 7rem); overflow-y: auto; }
.site-header[data-open] .site-nav { display: block; }
.site-nav__inner { padding-block: 1rem 2rem; }

.menu__link { display: block; padding: 0.95rem 0; border-bottom: 1px solid var(--border); font-size: 0.875rem; font-weight: 700; color: var(--slate); }
.menu__link:hover,
.menu__link[aria-current='page'] { color: var(--blue); }
.submenu-toggle { display: none; }
.submenu { background: var(--off-white); padding-left: 0.75rem; }
.submenu__link { display: flex; align-items: center; gap: 0.5rem; padding: 0.75rem 0; border-bottom: 1px solid var(--border); font-size: 0.75rem; color: var(--muted); }
.submenu__link::before { content: ''; width: 4px; height: 4px; border-radius: 50%; background: var(--blue); flex: none; }
.submenu__link:hover { color: var(--blue); }

/* Desktop: buttons beside the brand, links in a second row, hover dropdowns */
@media (min-width: 64rem) {
  .header-actions { display: flex; }
  .nav-toggle,
  .nav-actions { display: none; }

  .site-nav,
  .site-header[data-open] .site-nav {
    display: block;
    max-height: none;
    overflow: visible;
    background: var(--off-white);
  }
  .site-nav__inner { padding-block: 0; }
  .menu { display: flex; align-items: stretch; }

  .menu__item { position: relative; display: flex; align-items: center; }
  .menu__link {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 1.05rem 1.4rem;
    border-bottom: 2px solid transparent;
    font-size: 0.75rem;
    letter-spacing: 0.02em;
    white-space: nowrap;
  }
  .menu__item:hover > .menu__link,
  .menu__item:focus-within > .menu__link,
  .menu__item[data-open] > .menu__link { color: var(--blue); border-bottom-color: var(--blue); }

  .submenu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 100%;
    margin-left: -1.1rem;
    padding: 0;
    background: none;
    border: 0;
    color: var(--slate);
  }
  .menu__item:hover .submenu-toggle,
  .menu__item[data-open] .submenu-toggle { color: var(--blue); }
  .menu__item--has-sub > .menu__link { padding-right: 1.6rem; }

  .submenu {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 50;
    display: none;
    min-width: 13.5rem;
    padding: 0.75rem 0;
    background: var(--white);
    border: 1px solid var(--border);
    border-top: 1px solid var(--border);
    box-shadow: 0 16px 32px rgba(28, 43, 69, 0.16);
  }
  .submenu--wide { min-width: 24rem; grid-template-columns: 1fr 1fr; }
  .menu__item:hover > .submenu,
  .menu__item:focus-within > .submenu,
  .menu__item[data-open] > .submenu { display: block; }
  .menu__item:hover > .submenu--wide,
  .menu__item:focus-within > .submenu--wide,
  .menu__item[data-open] > .submenu--wide { display: grid; }

  .submenu__link { padding: 0.7rem 1.4rem; border: 0; color: var(--slate); }
  .submenu__link::before { background: var(--border); }
  .submenu__link:hover { background: var(--blue-light); color: var(--blue); }
}