/* ============================================
   GEMCON — Header & Navigation
   ============================================ */

/* --- Main Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0 var(--space-lg);
  transition: all var(--duration-normal) var(--ease-out);
}

.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 10, 0);
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  transition: all var(--duration-normal) var(--ease-out);
  z-index: -1;
}

.site-header.scrolled::before {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.site-header.scrolled {
  box-shadow: 0 1px 0 rgba(255,255,255,0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  max-width: var(--container-wide);
  margin: 0 auto;
}

/* --- Logo --- */
.site-logo {
  display: flex;
  align-items: center;
  z-index: 1001;
}

.site-logo img {
  height: 40px;
  width: auto;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.site-logo:hover img {
  opacity: 0.8;
}

/* --- Desktop Navigation --- */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-item {
  position: relative;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gemcon-white);
  padding: 8px 0;
  position: relative;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gemcon-gold);
  transition: width var(--duration-normal) var(--ease-out);
}

.nav-link:hover {
  color: #DFC591;
  text-shadow: 0 0 20px rgba(197, 165, 114, 0.5);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link.active {
  color: var(--gemcon-gold);
}

.nav-link.active::after {
  width: 100%;
}

/* --- Dropdown / Mega Menu --- */
.nav-item.has-dropdown {
  position: relative;
}

.nav-item.has-dropdown .nav-link::before {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  margin-left: 6px;
  vertical-align: middle;
  transition: transform var(--duration-fast) var(--ease-out);
}

.nav-item.has-dropdown:hover .nav-link::before {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 240px;
  background: var(--gemcon-charcoal);
  border: 1px solid var(--gemcon-graphite);
  border-radius: var(--radius-md);
  padding: var(--space-sm) 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all var(--duration-normal) var(--ease-out);
  box-shadow: var(--shadow-xl);
}

/* Invisible bridge to prevent dropdown from closing when moving mouse */
.nav-item.has-dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 16px;
}

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

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--gemcon-gray);
  transition: all var(--duration-fast) var(--ease-out);
}

.dropdown-item:hover {
  background: rgba(197, 165, 114, 0.08);
  color: var(--gemcon-gold);
  padding-left: 28px;
}

.dropdown-item .dropdown-icon {
  width: 20px;
  height: 20px;
  opacity: 0.5;
}

/* --- Header CTA --- */
.header-cta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header-cta .btn {
  padding: 10px 24px;
  font-size: 0.6875rem;
}

/* --- Mobile Hamburger --- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  z-index: 1001;
  background: none;
  border: none;
  padding: 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--gemcon-white);
  transition: all var(--duration-normal) var(--ease-out);
  transform-origin: center;
}

.hamburger.active span:first-child {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active span:last-child {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Mobile Menu --- */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  background: var(--gemcon-black);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: right var(--duration-slow) var(--ease-out);
}

.mobile-menu.open {
  right: 0;
}

.mobile-menu .mobile-nav-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.mobile-menu .mobile-nav-link {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 300;
  color: var(--gemcon-white);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--duration-normal) var(--ease-out);
}

.mobile-menu.open .mobile-nav-link {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu.open .mobile-nav-link:nth-child(1) { transition-delay: 100ms; }
.mobile-menu.open .mobile-nav-link:nth-child(2) { transition-delay: 150ms; }
.mobile-menu.open .mobile-nav-link:nth-child(3) { transition-delay: 200ms; }
.mobile-menu.open .mobile-nav-link:nth-child(4) { transition-delay: 250ms; }
.mobile-menu.open .mobile-nav-link:nth-child(5) { transition-delay: 300ms; }
.mobile-menu.open .mobile-nav-link:nth-child(6) { transition-delay: 350ms; }
.mobile-menu.open .mobile-nav-link:nth-child(7) { transition-delay: 400ms; }

.mobile-menu .mobile-nav-link:hover {
  color: var(--gemcon-gold);
}

.mobile-menu .mobile-cta {
  margin-top: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--duration-normal) var(--ease-out) 450ms;
}

.mobile-menu.open .mobile-cta {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .main-nav {
    display: none;
  }

  .header-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }
}