.header {
  margin: 0;
  padding: 12px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  background: var(--header-bg);
  backdrop-filter: blur(8px);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 56px;
}

.logo {
  display: flex;
  align-items: center;
  line-height: 0;
  font-weight: bold;
  font-size: 1.5rem;
}

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

.logo img {
  display: block;
  max-width: 10rem;
}

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

.nav li {
  display: flex;
  align-items: center;
}

.nav a {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--accent-gold);
}

.nav a.active {
  color: var(--accent-gold);
}

.theme-toggle {
  border: 1px solid var(--border-color);
  background: var(--surface-color);
  color: var(--text-color);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.theme-toggle__icon {
  font-size: 16px;
}

#languageLabel {
  color: var(--accent-gold);
  font-weight: 700;
}

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

.burger span {
  display: block;
  height: 3px;
  width: 25px;
  background: var(--text-color);
  border-radius: 2px;
}

.header.scrolled {
  background: var(--header-bg-scrolled);
}