/* ============================================================
   HEADER v7 — Dual Logo Smart Sticky
   at-top  → transparent + WHITE logo + white nav
   pinned  → white bg    + DARK logo  + navy nav
   hidden  → off-screen (scrolling down)
   ============================================================ */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  transition: transform 0.35s cubic-bezier(.4,0,.2,1),
              background 0.3s ease,
              box-shadow 0.3s ease;
}

/* ── State A: at top ── */
.site-header.at-top {
  background: transparent;
  transform: translateY(0);
  box-shadow: none;
}

/* ── State B: sticky (scroll up) ── */
.site-header.pinned {
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transform: translateY(0);
  box-shadow: 0 2px 24px rgba(27,43,107,0.10);
}

/* ── State C: hidden (scroll down) ── */
.site-header.hidden {
  transform: translateY(-100%);
}

/* ── Nav inner ── */
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 1.5rem;
}

/* ── Logo container ── */
.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.logo-img {
  height: 52px;
  width: auto;
  display: block;
  transition: opacity 0.25s ease;
}
/* Dark logo is wider-format — keep same height */
.logo-dark { height: 52px; }
.logo-white { height: 52px; }

/* WHITE logo: visible at-top, hidden when pinned */
.logo-white { display: block; opacity: 1; }
.logo-dark  { display: none;  opacity: 0; }

.site-header.at-top .logo-white { display: block; opacity: 1; }
.site-header.at-top .logo-dark  { display: none;  opacity: 0; }

.site-header.pinned .logo-white { display: none;  opacity: 0; }
.site-header.pinned .logo-dark  { display: block; opacity: 1; }

/* inner pages / any state without .at-top → show dark logo */
.site-header:not(.at-top) .logo-white { display: none;  opacity: 0; }
.site-header:not(.at-top) .logo-dark  { display: block; opacity: 1; }

/* ── Nav links ── */
.nav-links {
  display: flex; align-items: center; gap: 0.15rem;
  flex: 1; justify-content: center;
  list-style: none; margin: 0; padding: 0;
}
.nav-link {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 0.5rem 0.95rem;
  font-family: var(--font-display); font-size: 0.9rem; font-weight: 600;
  border-radius: var(--r-sm);
  transition: all 0.18s ease;
  text-decoration: none; letter-spacing: 0.01em;
}

/* at-top: white text */
.site-header.at-top .nav-link            { color: rgba(255,255,255,0.90); }
.site-header.at-top .nav-link:hover,
.site-header.at-top .nav-link.active     { color: #fff; background: rgba(255,255,255,0.13); }

/* pinned / inner pages: navy text */
.site-header.pinned .nav-link            { color: var(--navy); }
.site-header.pinned .nav-link:hover,
.site-header.pinned .nav-link.active     { color: var(--orange); background: var(--orange-light); }

.site-header:not(.at-top):not(.pinned) .nav-link { color: var(--navy); }

/* ── Dropdown ── */
.nav-has-drop { position: relative; }

.nav-link-drop svg { transition: transform 0.3s ease; }
.nav-has-drop .dropdown.open ~ .nav-link-drop svg { transform: rotate(180deg); }

.nav-has-drop > .nav-link-drop {
  padding-bottom: 1.5rem;
  margin-bottom: -1rem;
}

.dropdown {
  position: absolute;
  top: calc(100% - 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 270px;
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--r-lg);
  padding: 0.875rem 0.5rem 0.5rem;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  box-shadow: 0 20px 60px rgba(27,43,107,0.16);
  list-style: none;
}

.dropdown.open,
.nav-has-drop:hover .dropdown {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.drop-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.72rem 1rem; border-radius: var(--r-sm);
  color: var(--gray-600); font-size: 0.88rem;
  font-family: var(--font-display); font-weight: 500;
  text-decoration: none;
  transition: all 0.15s ease;
}
.drop-item:hover { background: var(--gray-50); color: var(--navy); }
.drop-item:hover .drop-arrow { opacity: 1; }

.drop-dot  { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.drop-info { display: flex; flex-direction: column; gap: 1px; flex: 1; }
.drop-info strong { font-size: 0.85rem; font-weight: 700; color: var(--navy); }
.drop-info small  { font-size: 0.7rem; color: var(--text-muted); }
.drop-arrow { margin-left: auto; opacity: 0; transition: opacity 0.15s; }
.drop-arrow svg { width: 11px; height: 11px; color: var(--orange); }

/* ── CTA ── */
.nav-cta { flex-shrink: 0; }

/* ── Hamburger ── */
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  padding: 0.5rem; border-radius: var(--r-sm);
  background: none; border: none; cursor: pointer;
}
.hbar {
  display: block; width: 22px; height: 2px;
  border-radius: var(--r-full);
  transition: transform 0.3s ease, opacity 0.3s, background 0.3s;
}
.site-header.at-top .hbar         { background: #fff; }
.site-header.pinned .hbar         { background: var(--navy); }
.site-header:not(.at-top) .hbar   { background: var(--navy); }

.nav-toggle[aria-expanded=true] .hbar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded=true] .hbar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded=true] .hbar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Mobile menu ── */
.mobile-menu {
  display: none;
  position: fixed; top: var(--header-h); left: 0; right: 0;
  background: #fff;
  border-top: 2px solid var(--orange);
  padding: 1.25rem 1.5rem;
  box-shadow: 0 20px 60px rgba(27,43,107,.18);
  transform: translateY(-4px); opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s;
  max-height: calc(100vh - var(--header-h)); overflow-y: auto;
}
.mobile-menu.open { transform: translateY(0); opacity: 1; }

.mob-links { display: flex; flex-direction: column; gap: 0.25rem; list-style: none; padding: 0; margin: 0; }
.mob-link {
  display: block; padding: 0.75rem 1rem;
  color: var(--navy); font-size: 1rem; font-weight: 600;
  font-family: var(--font-display);
  border-radius: var(--r-sm); text-decoration: none;
  transition: all 0.15s;
}
.mob-link:hover { background: var(--orange-light); color: var(--orange); }
.mob-sec-label {
  display: block; padding: 0.5rem 1rem 0.25rem;
  color: var(--orange); font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; font-family: var(--font-display);
}
.mob-sub { display: flex; flex-direction: column; gap: 0.15rem; padding-left: 1rem; list-style: none; }
.mob-sub-link {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.5rem 0.75rem; color: var(--gray-600);
  font-size: 0.88rem; font-family: var(--font-display); font-weight: 500;
  border-radius: var(--r-sm); text-decoration: none;
  transition: all 0.15s;
}
.mob-sub-link:hover { color: var(--navy); background: var(--gray-50); }
.mob-sub-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }

@media (max-width: 1024px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .mobile-menu { display: block; }
  .nav-cta { display: none; }
}