/* Default (mobile & <850px) tetap normal */
.main-navigation {
  position: relative;
  width: 100%;
  z-index: 10;
}

/* Sticky hanya untuk 850px ke atas */
@media (min-width: 850px) {

  .main-navigation {
    transition: box-shadow .18s ease, background-color .18s ease, transform .18s ease;
  }

  .main-navigation.fixed {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    background-color: rgba(255,255,255,0.98);
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
  }

  .main-navigation .container {
    max-width: 1140px;
    margin: 0 auto;
    box-sizing: border-box;
  }

  .main-navigation-placeholder {
    display: block;
    width: 100%;
    height: 0;
    pointer-events: none;
    visibility: visible;
  }

}