/* ============================================================
   eLightInfo — Navigation Styles
   Fixed navbar, dropdowns, mobile menu
   ============================================================ */

/* --- Navbar Wrapper --- */
#site-header {
  position: relative;
  z-index: 1000;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(13, 32, 69, 0.98);
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}

.navbar.hidden {
  transform: translateY(-100%);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-8);
  gap: var(--space-6);
}

/* --- Logo --- */
.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}
.navbar-logo img,
.navbar-logo svg {
  height: 40px;
  width: auto;
}
.navbar-logo-text {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: -0.01em;
  line-height: 1;
}
.navbar-logo-text span {
  color: var(--color-cyan);
}

/* --- Nav List --- */
.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  justify-content: center;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0.5rem 0.75rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: rgba(255,255,255,0.80);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}
.nav-link:hover,
.nav-link:focus {
  color: var(--color-white);
  background: rgba(255,255,255,0.06);
}
.nav-link.active {
  color: var(--color-cyan);
}

/* Dropdown chevron */
.nav-link .chevron {
  display: inline-block;
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
  opacity: 0.6;
}
.nav-item.open > .nav-link .chevron {
  transform: rotate(180deg);
}

/* --- Dropdown Menu --- */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 240px;
  background: var(--color-navy);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: 100;
}

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

/* Dropdown arrow */
.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  background: var(--color-navy);
  border-left: 1px solid rgba(255,255,255,0.08);
  border-top: 1px solid rgba(255,255,255,0.08);
  transform: translateX(-50%) rotate(45deg);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.625rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}
.dropdown-item:hover,
.dropdown-item:focus {
  background: rgba(29,106,235,0.15);
  color: var(--color-cyan);
}
.dropdown-item.active {
  background: rgba(29,106,235,0.2);
  color: var(--color-cyan);
}
.dropdown-item i {
  font-size: 1rem;
  width: 20px;
  text-align: center;
  opacity: 0.7;
}

.dropdown-divider {
  height: 1px;
  background: rgba(255,255,255,0.07);
  margin: var(--space-2);
}

/* --- Navbar CTA --- */
.navbar-cta {
  flex-shrink: 0;
}
.navbar-cta .btn {
  padding: 0.55rem 1.25rem;
  font-size: 0.875rem;
}

/* --- Mobile Hamburger --- */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
  background: none;
  border: none;
  z-index: 10;
}
.navbar-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal), width var(--transition-normal);
  transform-origin: center;
}
.navbar-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.navbar-toggle.open span:nth-child(2) {
  opacity: 0;
  width: 0;
}
.navbar-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Mobile Nav Overlay --- */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--color-dark);
  overflow-y: auto;
  padding-top: var(--nav-height);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
}
.mobile-nav.open {
  transform: translateX(0);
}

.mobile-nav-inner {
  padding: var(--space-6) var(--space-8);
}

.mobile-nav-item {
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  font-size: 1.0625rem;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  cursor: pointer;
}
.mobile-nav-link:hover { color: var(--color-cyan); }

.mobile-nav-link .chevron {
  transition: transform var(--transition-fast);
  opacity: 0.6;
}
.mobile-nav-item.open .mobile-nav-link .chevron {
  transform: rotate(180deg);
}

.mobile-dropdown {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}
.mobile-nav-item.open .mobile-dropdown {
  max-height: 600px;
}

.mobile-dropdown-item {
  display: block;
  padding: 0.6rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.65);
  border-radius: var(--radius-md);
}
.mobile-dropdown-item:hover {
  color: var(--color-cyan);
  background: rgba(29,106,235,0.1);
}

.mobile-nav-cta {
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}
.mobile-nav-cta .btn {
  width: 100%;
  justify-content: center;
}

/* --- Body padding for fixed nav --- */
body {
  padding-top: var(--nav-height);
}
/* Home page hero is full-viewport, so no top offset needed there */
body.has-hero {
  padding-top: 0;
}