.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(5, 5, 5, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.logo svg,
.logo img {
  width: auto;
  height: 42px;
  max-width: 200px;
  object-fit: contain;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
}

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

.custom-lang-selector {
  position: relative;
  display: inline-block;
  user-select: none;
}

.lang-selected-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 20px; 
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.lang-selected-btn:hover,
.custom-lang-selector.active .lang-selected-btn {
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.06);
}

.globe-icon,
.chevron-icon {
  flex-shrink: 0;
  transition: var(--transition-smooth);
}

.chevron-icon {
  color: var(--text-secondary);
}

.custom-lang-selector.active .chevron-icon {
  transform: rotate(180deg);
}

.lang-dropdown-list {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: rgba(15, 15, 15, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.4rem 0;
  width: 140px;
  list-style: none;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition-smooth);
}

.custom-lang-selector.active .lang-dropdown-list {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-dropdown-item {
  padding: 0.6rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  text-align: left;
  transition: var(--transition-smooth);
}

.lang-dropdown-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.lang-dropdown-item.selected {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 24px;
}

.nav-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-smooth);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

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

  .nav-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--bg-color);
    border-left: 1px solid var(--border-color);
    flex-direction: column;
    justify-content: center;
    gap: 3rem;
    padding: 2rem;
    transition: var(--transition-smooth);
  }

  .main-nav.active {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    gap: 2rem;
    width: 100%;
    text-align: center;
  }

  .nav-link {
    font-size: 1.2rem;
  }
}