/* css/header.css */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: var(--color-bg-white);
  z-index: 1000;
  transition: box-shadow var(--transition-fast), background-color var(--transition-fast);
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
}

.logo-text {
  font-family: var(--font-family-heading);
  font-weight: 700;
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  letter-spacing: -0.5px;
}

.desktop-nav {
  display: flex;
}

.nav-list {
  display: flex;
  gap: var(--spacing-6);
}

.nav-link {
  font-weight: 500;
  color: var(--color-text-main);
  font-size: 0.95rem;
  padding: var(--spacing-2) 0;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
}

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

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

.dropdown-icon {
  font-size: 0.6rem;
  margin-left: 2px;
  vertical-align: middle;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: -20px;
  background-color: var(--color-bg-white);
  min-width: 220px;
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-md);
  padding: var(--spacing-2) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  border: 1px solid rgba(0,0,0,0.05);
}

.has-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li a {
  display: block;
  padding: var(--spacing-2) var(--spacing-6);
  color: var(--color-text-main);
  font-size: 0.9rem;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.dropdown-menu li a:hover {
  background-color: var(--color-bg-light);
  color: var(--color-primary);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1010;
}

.menu-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  transition: all 0.3s linear;
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 350px;
  height: 100vh;
  background-color: var(--color-bg-white);
  z-index: 1020;
  box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
  transition: right 0.3s ease-in-out;
  display: flex;
  flex-direction: column;
  padding: var(--spacing-6);
  overflow-y: auto;
}

.mobile-drawer.active {
  right: 0;
}

.drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1015;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease-in-out;
  backdrop-filter: blur(3px);
}

.drawer-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer-header {
  margin-bottom: var(--spacing-8);
}

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

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.mobile-nav a {
  font-size: var(--font-size-lg);
  font-weight: 500;
  display: block;
}

.mobile-subnav {
  margin-top: var(--spacing-2);
  margin-left: var(--spacing-4);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.mobile-subnav a {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
}

@media (max-width: 1024px) {
  .desktop-nav {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .header-actions .btn {
    display: none;
  }
}