.header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--espacio-sm);
  background: var(--color-header);
  color: var(--color-texto-claro);
  padding: var(--espacio-sm) var(--espacio-md);
  min-height: var(--alto-header);
}

.header__logo img { height: 36px; width: auto; }

.header__vigencia {
  display: flex;
  flex-direction: column;
  text-align: center;
  font-size: var(--fs-xs);
  line-height: 1.3;
}
.header__vigencia-label { text-transform: uppercase; letter-spacing: 0.03em; opacity: 0.75; }
.header__vigencia-fecha { font-weight: 700; }

.header__menu-btn {
  width: 30px;
  height: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 0;
  flex-shrink: 0;
}
.header__menu-btn span {
  display: block;
  height: 2px;
  background: var(--color-texto-claro);
  border-radius: 2px;
}

@media (min-width: 1024px) {
  .header { padding: var(--espacio-md) var(--espacio-xl); min-height: var(--alto-header); }
  .header__logo img { height: 48px; }
}