/* ============================================
   NAVIGATION
   ============================================ */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 24px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.5s ease, padding 0.5s ease, backdrop-filter 0.5s ease;
}

.site-nav.scrolled {
  background: rgba(13, 17, 53, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 16px var(--gutter);
  border-bottom: 1px solid var(--border);
}

.nav-logo img {
  height: 40px;
  width: auto;
  transition: height 0.5s ease;
}
.site-nav.scrolled .nav-logo img { height: 34px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 40px);
}

.nav-links a {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  transition: color 0.2s ease;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease-out);
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-links a.active { color: var(--white); }

/* DROPDOWN */
.nav-dropdown {
  position: relative;
}
.nav-dropdown > a::after { display: none; }
.nav-dropdown > a {
  display: flex;
  align-items: center;
  gap: 5px;
}
.nav-dropdown > a svg {
  width: 14px;
  height: 14px;
  transition: transform 0.3s ease;
}
.nav-dropdown:hover > a svg { transform: rotate(180deg); }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 200px;
  background: var(--navy-dark);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-8px);
  transition: all 0.25s var(--ease-out);
}
.dropdown-menu.mega {
  min-width: 480px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 16px;
}
.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-menu a {
  display: block;
  padding: 8px 12px;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.7);
  border-radius: 2px;
  transition: all 0.2s ease;
}
.dropdown-menu a:hover {
  background: rgba(255,255,255,0.06);
  color: var(--white);
}

.dropdown-col-label {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--teal);
  padding: 4px 12px 8px;
  display: block;
}

/* CTA IN NAV */
.nav-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-phone {
  font-size: 0.8125rem;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s;
}
.nav-phone:hover { color: var(--white); }

/* MOBILE HAMBURGER */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 1px;
  transition: all 0.3s ease;
}
.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* MOBILE MENU */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--navy-deep);
  display: flex;
  flex-direction: column;
  padding: 100px var(--gutter) 40px;
  transform: translateX(100%);
  transition: transform 0.5s var(--ease-out);
  overflow-y: auto;
}
.mobile-menu.open { transform: translateX(0); }

.mobile-menu .mobile-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.mobile-menu a {
  font-size: 1.2rem;
  font-weight: 700;
  color: rgba(255,255,255,0.75);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s, padding-left 0.2s;
}
.mobile-menu a:hover { color: var(--white); padding-left: 8px; }
.mobile-menu .mobile-sub a {
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 8px 0 8px 16px;
  color: rgba(255,255,255,0.5);
  border-bottom: none;
}
.mobile-menu .mobile-cta {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

@media (max-width: 1024px) {
  .nav-links { display: none; }
  .nav-phone { display: none; }
  .nav-hamburger { display: flex; }
}
@media (min-width: 1025px) {
  .mobile-menu { display: none; }
}

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

/* Dropdown mega menu column */
.dropdown-col {
  display: flex;
  flex-direction: column;
}