/* ============================================================
   ROYAL GLOBAL NET — nav.css
   Navbar, mobile menu, sticky behaviour
   ============================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding-top: 10px;
  transition: background var(--transition), box-shadow var(--transition), padding-top 0.4s ease;
}

/* Transparent on hero, dark when scrolled */
.site-header.transparent {
  background: transparent;
}
.site-header.scrolled {
  background: var(--brand-alt);
  box-shadow: 0 2px 20px rgba(0,0,0,0.35);
  padding-top: 0;
}

/* Pages with light hero: always dark */
.site-header.always-dark {
  background: var(--brand-alt);
}

/* --- Inner layout ----------------------------------------- */
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  padding: 0 1.5rem;
  max-width: var(--container);
  margin: 0 auto;
  transition: height 0.4s ease;
}

/* --- Logo -------------------------------------------------- */
.nav-logo {
  flex-shrink: 0;
  overflow: hidden;
}
.nav-logo img {
  width: 250px;
  height: auto;
  object-fit: contain;
  display: block;
  transition: width 0.4s ease;
}

/* --- Desktop nav ------------------------------------------ */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-links a,
.nav-links button.nav-link {
  position: relative;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.85);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  transition: color var(--transition), font-size 0.4s ease;
  background: none;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.nav-links a::after,
.nav-links button.nav-link:not(.nav-dropdown-toggle)::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0.85rem;
  right: 0.85rem;
  height: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s ease;
}

.nav-links a:hover,
.nav-links button.nav-link:hover {
  color: var(--brand);
}
.nav-links a:hover::after,
.nav-links button.nav-link:not(.nav-dropdown-toggle):hover::after {
  transform: scaleX(1);
}

/* Active state */
.nav-links a.active {
  color: var(--brand);
}
.nav-links a.active::after {
  transform: scaleX(1);
}

/* CTA button */
.nav-cta {
  margin-left: 1rem;
}

/* --- Dropdown ---------------------------------------------- */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.nav-dropdown-toggle::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  transition: transform var(--transition);
}
.nav-dropdown.open .nav-dropdown-toggle::after {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: #1a1a1a;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 6px;
  padding: 0.75rem 0;
  min-width: 280px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.4);
}
.nav-dropdown.open .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-menu a {
  display: block;
  padding: 0.55rem 1.25rem;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.8);
  transition: color var(--transition), background var(--transition);
}
.nav-dropdown-menu a:hover {
  color: var(--brand);
  background: rgba(255,255,255,0.04);
}

/* --- Hamburger --------------------------------------------- */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  cursor: pointer;
  background: none;
  border: none;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}
.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Mobile menu overlay ----------------------------------- */
.nav-mobile {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  width: 100%;
  height: calc(100vh - 70px);
  background: var(--brand-alt);
  z-index: 999;
  overflow-y: auto;
  padding: 2rem 1.5rem;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity var(--transition), transform var(--transition);
  pointer-events: none;
}
.nav-mobile.open {
  display: block;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.nav-mobile a {
  display: block;
  font-size: 1.1rem;
  font-weight: 400;
  color: rgba(255,255,255,0.85);
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: color var(--transition);
}
.nav-mobile a:hover {
  color: var(--brand);
}

.nav-mobile .mobile-submenu-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 1.5rem 0 0.5rem;
}

.nav-mobile .btn {
  margin-top: 1.5rem;
  width: 100%;
  justify-content: center;
  font-size: 1rem;
  padding: 1rem;
}

/* --- Scrolled compact (desktop only) ----------------------- */
.site-header.scrolled .nav-inner {
  height: 54px;
}
.site-header.scrolled .nav-logo img {
  width: 165px;
}
.site-header.scrolled .nav-links a,
.site-header.scrolled .nav-links button.nav-link {
  font-size: 0.85rem;
}
.site-header.scrolled .nav-cta .btn {
  font-size: 0.65rem;
  padding: 0.35rem 0.8rem;
}

/* --- Responsive -------------------------------------------- */
@media (max-width: 960px) {
  .nav-links,
  .nav-cta {
    display: none !important;
  }
  .nav-hamburger {
    display: flex;
  }
}