/* Fixed site header — transparent over hero, solid on scroll */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .35s ease, backdrop-filter .35s ease, border-color .35s ease, box-shadow .35s ease;
  border-bottom: 1px solid transparent;
}
.site-header.is-transparent { background: transparent; }
.site-header.is-transparent::after {
  content: "";
  position: absolute; left: 0; right: 0; top: 0; bottom: -80px;
  background: linear-gradient(to bottom, rgba(3,8,35,.65) 0%, rgba(3,8,35,.35) 55%, rgba(3,8,35,0) 100%);
  pointer-events: none; z-index: -1;
}
.site-header.is-solid {
  background: rgba(2,78,114,.92);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom-color: rgba(255,255,255,.08);
  box-shadow: 0 4px 24px rgba(3,8,35,.22);
}
.site-header.is-solid::after { display: none; }

/* Nav layout — desktop: 3-col grid (logo | links | actions) */
.nav {
  max-width: 1280px; margin: 0 auto; padding: 18px 32px;
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 24px;
}
@media (max-width: 720px) { .nav { padding: 14px 20px; gap: 14px; } }

/* Logo — two versions: dark on light, light on dark backgrounds */
.nav-logo { display: flex; align-items: center; border: none; flex-shrink: 0; }
.nav-logo img { height: 44px; width: auto; transition: opacity .25s ease; }
.nav-logo .logo-dark  { display: none; }
.nav-logo .logo-light { display: block; }

/* Desktop nav links list */
.nav-links {
  display: flex; align-items: center; gap: 2px;
  list-style: none; margin: 0; padding: 0;
  justify-self: center; white-space: nowrap;
}
.nav-actions { display: flex; align-items: center; gap: 18px; }
@media (max-width: 1200px) { .nav-actions { gap: 10px; } }

/* Individual nav link */
.nav-link {
  position: relative;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 13px; font-size: 15px; font-weight: 700;
  color: rgba(255,255,255,.85);
  border-radius: var(--radius-pill); border: none;
  letter-spacing: .01em; text-decoration: none;
  transition: color .2s, background .2s;
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,.12); }
.nav-link.is-active { color: #fff; background: rgba(237,92,47,.18); box-shadow: inset 0 0 0 1px rgba(237,92,47,.55); }

/* Dropdown parent chevron */
.nav-item-has-sub { position: relative; }
.nav-item-has-sub > .nav-link::after {
  content: ""; width: 8px; height: 8px;
  border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px); opacity: .7; margin-left: 2px;
}

/* Dropdown submenu */
.nav-sub {
  position: absolute; top: calc(100% - 2px); left: 0; min-width: 200px;
  padding: 6px 0 0; list-style: none; margin: 0;
  display: flex; flex-direction: column; gap: 2px;
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .2s, transform .2s, visibility .2s;
}
.nav-item-has-sub:hover .nav-sub,
.nav-item-has-sub:focus-within .nav-sub { opacity: 1; visibility: visible; transform: none; }
.nav-sub a {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 16px; font-size: 15px; font-weight: 700; color: #fff;
  background: var(--accent); border: none; border-radius: var(--radius-pill);
  box-shadow: var(--shadow-glow-coral); text-decoration: none;
  letter-spacing: .01em; white-space: nowrap; transition: color .2s, background .2s;
}
.nav-sub a:hover { background: var(--accent-hover); color: #fff; }
.nav-sub a .arrow { margin-left: auto; width: 14px; height: 14px; opacity: .65; transition: transform .2s, opacity .2s; }
.nav-sub a:hover .arrow { opacity: 1; transform: translateX(3px); }

/* CTA button in nav */
.nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 26px; background: var(--accent); color: #fff;
  border-radius: var(--radius-pill); font-size: 14px; font-weight: 800;
  letter-spacing: var(--tracking-claim); text-transform: uppercase; border: none;
  transition: background .2s, transform .25s cubic-bezier(.22,1,.36,1), box-shadow .25s;
  box-shadow: 0 6px 20px rgba(237,92,47,.32);
}
.nav-cta, .nav-cta:hover, .nav-cta:focus { color: #fff; }
.nav-cta:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 10px 26px rgba(237,92,47,.45); }

/* Language toggle pill */
.lang-toggle {
  display: inline-flex; gap: 2px;
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.22);
  border-radius: var(--radius-pill); padding: 3px; margin-left: 6px;
}
.lang-toggle button, .lang-toggle a {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 6px 11px; font-size: 12px; font-weight: 800;
  border-radius: var(--radius-pill); color: rgba(255,255,255,.7);
  letter-spacing: .04em; transition: all .2s; text-decoration: none; border: none;
}
.lang-toggle button:hover, .lang-toggle a:hover { color: #fff; }
.lang-toggle button.is-active, .lang-toggle a.is-active { background: #fff; color: var(--wab-dark-water); }

/* Hamburger toggle — hidden on desktop */
.menu-toggle { display: none; padding: 10px; border-radius: 999px; order: 99; color: #fff; }
.nav-mobile-cta { display: none; border: none; text-decoration: none; }
.menu-toggle .icon-open  { display: block; width: 24px; height: 18px; transition: opacity .2s; }
.menu-toggle .icon-close { display: none;  width: 22px; height: 22px; transition: opacity .2s; }

/* Mobile nav overlay */
@media (max-width: 1200px) {
  .nav { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 8px; }
  .nav-links { display: none; }
  .menu-toggle { display: block; }
  .nav-actions { display: contents; }
  .nav-actions > .nav-cta { display: none; }
  .lang-toggle { margin-left: 0; order: 1; justify-self: start; }
  .nav-logo    { order: 2; justify-content: center; }
  .menu-toggle { order: 3; justify-self: end; }

  body.menu-open .site-header,
  body.menu-open .site-header.is-transparent,
  body.menu-open .site-header.is-solid {
    background: var(--wab-dark-water);
    backdrop-filter: none; -webkit-backdrop-filter: none;
    border-bottom-color: rgba(255,255,255,.08);
  }
  body.menu-open .site-header::after { display: none; }
  body.menu-open .nav-logo,
  body.menu-open .lang-toggle,
  body.menu-open .menu-toggle { position: relative; z-index: 100; }

  body.menu-open .nav-links {
    display: flex; position: fixed; top: 0; left: 0;
    width: 100vw; height: 100vh; height: 100dvh;
    flex-direction: column; align-items: center; justify-content: space-evenly; gap: 0;
    background: var(--wab-dark-water); padding: 96px 24px 32px; overflow-y: auto; z-index: 99;
  }
  body.menu-open .nav-links > li { display: flex; justify-content: center; }
  body.menu-open .nav-links > li:last-child { width: 100%; padding: 0 8px; margin-top: 16px; }

  body.menu-open .nav-link {
    color: #fff; padding: 8px 16px; font-size: 22px; font-weight: 700;
    border: none; border-radius: var(--radius-pill); text-align: center; justify-content: center;
  }
  body.menu-open .nav-link:hover { background: transparent; color: var(--accent); }
  body.menu-open .nav-item-has-sub > .nav-link::after { display: none; }
  body.menu-open .nav-sub { display: none; }

  .nav-mobile-cta {
    display: none; border: none; text-decoration: none;
  }
  body.menu-open .nav-mobile-cta {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    margin-top: auto; width: 100%; padding: 22px 32px;
    background: var(--accent); color: #fff; border: none; border-radius: var(--radius-pill);
    font-size: 18px; font-weight: 800; letter-spacing: var(--tracking-claim); text-transform: uppercase;
    text-decoration: none; box-shadow: var(--shadow-glow-coral);
  }
  body.menu-open .nav-mobile-cta:hover { background: var(--accent-hover); color: #fff; }

  body.menu-open .menu-toggle .icon-open  { display: none; }
  body.menu-open .menu-toggle .icon-close { display: block; }
}