.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-cool-accent);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.85rem;
}
.header__logo img { height: 2.25rem; width: auto; }

.header__nav { display: none; }
.header__nav-list { display: flex; gap: 1.5rem; }
.header__nav-item {
  font-weight: var(--fw-medium);
  color: var(--color-text);
  padding-block: 0.5rem;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.header__nav-item:hover,
.header__nav-item--active {
  color: var(--color-white);
  border-color: var(--color-accent);
}

.header__actions { display: flex; align-items: center; gap: 0.6rem; }
.header__cta { display: none; padding: 0.6rem 1.1rem; font-size: 0.85rem; }
.header__flag { display: none; font-size: 1.35rem; line-height: 1; }

.header__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.25rem;
  height: 2.25rem;
}
.header__burger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-white);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.header__burger[aria-expanded="true"] .header__burger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header__burger[aria-expanded="true"] .header__burger-line:nth-child(2) { opacity: 0; }
.header__burger[aria-expanded="true"] .header__burger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.header__mobile {
  display: none;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.25rem var(--container-pad) 1.75rem;
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-cool-accent);
}
.header__mobile.is-open { display: flex; }
.header__mobile-list { display: grid; gap: 0.25rem; }
.header__mobile-link {
  display: block;
  padding: 0.75rem 0.25rem;
  font-weight: var(--fw-medium);
  border-bottom: 1px solid var(--color-cool-accent);
}
.header__mobile-link--active { color: var(--color-heading-accent); }
.header__mobile-actions { display: grid; gap: 0.75rem; }

@media (min-width: 992px) {
  .header__nav { display: block; }
  .header__cta { display: inline-flex; }
  .header__flag { display: inline-flex; }
  .header__burger { display: none; }
  .header__mobile { display: none !important; }
}