/* Header styles */
#main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4rem;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

#main-header.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
}

#main-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

/* Logo */
.logo a {
  display: flex;
  align-items: center;
  color: var(--color-black);
  font-weight: 500;
  font-size: 1.25rem;
}

.logo-img {
  height: 2.5rem;
  width: calc(2.5rem * 14/9);
  object-fit: contain;
  margin-right: 0.75rem;
}

/* Navigation */
.nav-menu {
  display: flex;
  gap: var(--space-4);
  margin: 0 var(--space-4);
}

.nav-link {
  color: var(--color-gray-600);
  font-weight: 500;
  transition: color 0.2s ease;
  padding: 0.5rem;
}

.nav-link:hover {
  color: var(--color-black);
}

.nav-link.active {
  color: var(--color-gr);
  font-weight: 700;
}

/* Language switcher */
.language-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.language-link {
  padding: 0.5rem;
  color: var(--color-gray-600);
  font-weight: 500;
  transition: color 0.2s ease;
}

.language-link:hover {
  color: var(--color-black);
}

.language-link.active {
  color: var(--color-black);
  font-weight: 700;
}

.language-divider {
  color: var(--color-gray-400);
}

/* Mobile menu */
.mobile-menu-toggle {
  display: none;
  width: 32px;
  height: 32px;
  padding: 4px;
  cursor: pointer;
  position: relative;
  z-index: 1050;
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-gray-800);
  margin: 6px 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.mobile-menu-container {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: rgba(255, 255, 255, 0.98);
  z-index: 1040;
  padding-top: 5rem;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.mobile-menu-container.active {
  transform: translateX(0);
}

.mobile-nav-menu {
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  gap: var(--space-4);
}

.mobile-nav-menu .nav-link {
  font-size: 1.25rem;
  padding: var(--space-2);
  border-bottom: 1px solid var(--color-gray-200);
}

.mobile-language-switcher {
  display: flex;
  justify-content: center;
  padding: var(--space-4);
  border-top: 1px solid var(--color-gray-200);
  margin-top: var(--space-4);
}

/* Toggle active state */
#main-header.menu-active .mobile-menu-toggle span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

#main-header.menu-active .mobile-menu-toggle span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Responsive styles */
@media (max-width: 768px) {
  .nav-menu, .language-switcher {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .mobile-menu-container {
    display: block;
  }
  
  #main-header .container {
    justify-content: space-between;
  }
}