#fnHamburger {
  width: 50px;
  height: 50px;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

#fnHamburger span {
  display: block;
  width: 30px;
  height: 1.5px;
  background: #ffffff;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
}

/* Otevřený stav — X */
#fnHamburger.is-open span:nth-child(1) {
  transform: translateY(4.75px) rotate(45deg);
}
#fnHamburger.is-open span:nth-child(2) {
  transform: translateY(-4.75px) rotate(-45deg);
}


.mf-header{
  transition:background-color .35s ease, box-shadow .35s ease;
}
.mf-header.mf-scrolled{
  background-color:#000000!important;   /* plne čierna */
  box-shadow:0 6px 24px rgba(0,0,0,.28);
}