/* ============================================
   Header & Navigation
   ============================================ */

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: #121826;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(45, 146, 171, 0.3);
  transition: all var(--transition-normal);
}

header.scrolled {
  background-color: #121826;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-xl);
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  height: 85px;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img,
.logo-img {
  height: 49px !important;
  width: 200px !important;
  object-fit: contain;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
  margin: 0 auto;
  padding: 0;
}

.navbar-nav > li {
  position: relative;
}

.navbar-nav > li > a {
  color: var(--color-white);
  font-weight: 500;
  font-size: var(--text-base);
  padding: var(--spacing-sm) 0;
  transition: all 0.2s ease;
  position: relative;
  text-decoration: none;
}

.navbar-nav > li > a:hover {
  color: var(--primary-blue);
}

.navbar-nav > li > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-success) 100%);
  transition: width 0.2s ease;
}

.navbar-nav > li > a:hover::after,
.navbar-nav > li > a.active::after {
  width: 100%;
}

.navbar-nav > li > a.active {
  color: var(--primary-blue);
}

.nav-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + var(--spacing-sm));
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 400px;
  background: #121826;
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 1000;
  box-shadow: var(--shadow-xl);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}

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

.dropdown-menu li {
  margin: 0;
}

.dropdown-menu a {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  color: var(--color-white);
  font-weight: 500;
  font-size: var(--text-sm);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  min-height: 48px;
  position: relative;
  text-decoration: none;
}

.dropdown-menu a::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.05), transparent);
  transition: left var(--transition-normal);
  z-index: -1;
}

.dropdown-menu a:hover {
  background-color: var(--primary-blue);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
}

.dropdown-menu a:hover::before {
  left: 100%;
}

.dropdown-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary-blue);
  transition: all var(--transition-fast);
  transform: translateX(-50%);
}

.dropdown-menu a:hover::after {
  width: 80%;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-left: auto;
}

.auth-buttons {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.cart-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-white);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  min-width: 40px;
  min-height: 40px;
}

.cart-icon:hover {
  color: var(--primary-blue);
  background-color: rgba(45, 146, 171, 0.1);
}

.cart-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background-color: var(--primary-blue);
  color: var(--bg-primary);
  font-size: 0.7rem;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  z-index: 10;
}

/* Account menu styling */
.account-header-actions {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.account-header-avatar {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 0.35rem 0.75rem;
  min-height: 40px;
  background: var(--bg-primary);
  border: 1px solid rgba(148, 163, 184, 0.6);
  border-radius: 9999px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.account-header-avatar:hover {
  border-color: var(--primary-blue);
  box-shadow: 0 8px 16px rgba(45, 146, 171, 0.18);
}

.account-header-avatar span[aria-hidden] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 9999px;
  background: var(--primary-blue);
  color: #ffffff;
  font-weight: 700;
}

.account-header-avatar-icon {
  width: 18px;
  height: 18px;
  opacity: 0.75;
}

.account-header-menu {
  display: none;
  position: absolute;
  top: calc(100% + 0.75rem);
  right: 0;
  min-width: 220px;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(15, 23, 42, 0.12);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-md);
  z-index: 1200;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.account-header-menu.is-open {
  display: flex;
}

.account-header-menu-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid rgba(226, 232, 240, 0.9);
  color: var(--text-secondary);
}

.account-header-menu-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0;
}

.account-header-menu-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.account-header-menu-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.account-header-menu-item svg {
  flex-shrink: 0;
}

.account-header-menu-item:hover,
.account-header-menu-item:focus-visible {
  background: rgba(241, 245, 249, 0.9);
  color: var(--primary-blue-dark);
  outline: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #ffffff;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(17, 24, 39, 0.75);
  backdrop-filter: blur(4px);
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.mobile-nav.active {
  display: block;
  opacity: 1;
  visibility: visible;
}

.mobile-nav-content {
  position: absolute;
  top: 0;
  right: 0;
  width: 280px;
  height: 100%;
  background: var(--bg-primary);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  box-shadow: var(--shadow-xl);
}

.mobile-nav.active .mobile-nav-content {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-light);
}

.mobile-nav-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-primary);
}

.mobile-nav-menu {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mobile-nav-menu li {
  margin-bottom: var(--spacing-md);
}

.mobile-nav-menu a {
  display: block;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
  padding: var(--spacing-sm) 0;
}

.mobile-nav-item.has-submenu > a {
  position: relative;
  padding-right: 1.5rem;
}

.mobile-nav-item.has-submenu > a::after {
  content: '>';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%) rotate(90deg);
  font-size: 0.75rem;
  opacity: 0.6;
}

.mobile-nav-submenu {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0 1rem;
  border-left: 2px solid var(--color-gray-200);
}

.mobile-nav-submenu a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.5rem 0 0.5rem 1rem;
}

.mobile-nav-actions {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (max-width: 1024px) {
  .navbar-nav,
  .navbar-actions {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  body {
    padding-top: 60px;
  }

  .navbar {
    padding: var(--spacing-md);
  }
}

@media (max-width: 768px) {
  .navbar {
    padding: var(--spacing-md);
  }
}