.ech-nav{
  position: fixed;
  top: var(--header-h);
  right: 0px;
  z-index: 950;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgb(0,84,134);
  color: rgb(242,242,242);
  font-size: 14px;
}

.ech-nav-list{
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  margin: 0px;
  padding: 0px;
  list-style: none;
  white-space: nowrap;
}

.ech-nav-item{ margin:0px; padding:0px; }
.ech-nav-link{
  display: block;
  padding: 10px 14px;
  text-decoration: none;
  background: rgb(0,84,134);
  color: rgb(242,242,242);
}
.ech-nav-link:hover,
.ech-nav-link:focus{
  background: rgb(40,60,120);
  color: rgb(242,242,242);
  text-decoration: none;
}
.ech-nav-link.is-active{
  background: rgb(40,60,120);
  color: rgb(242,242,242);
}

/* Dark Mode Desktop */
@media (prefers-color-scheme: dark){
  .ech-nav{
    background: rgb(242,242,242);
    color: rgb(0,84,134);
  }
  .ech-nav-link{
    color: rgb(0,84,134);
    background: rgb(242,242,242);
  }
  .ech-nav-link:hover,
  .ech-nav-link:focus,
  .ech-nav-link.is-active{
    background: rgb(217,217,217);
    color: rgb(0,84,134);
  }
}

/* ===== Desktop Submenu (2. Ebene) ===== */
.ech-nav-item.has-sub{ position: static; }

.ech-submenu{
  position: fixed;
  left: 0px; right: 0px;
  top: calc(var(--header-h) + var(--nav-h) + var(--gap-bridge));
  z-index: 940;
  display: none;
  background: rgb(0,84,134);
  color: rgb(242,242,242);
  padding: 20px;
  box-sizing: border-box;
  box-shadow: 0 6px 14px rgba(0,0,0,0.18);
}

/* Hover-Brücke */
.ech-submenu::before{
  content:"";
  position:absolute;
  left:0px; right:0px;
  top: calc(-1 * var(--gap-bridge));
  height: var(--gap-bridge);
  background: transparent;
  pointer-events: auto;
}

.ech-submenu-inner{
  display: grid;
  grid-template-columns: repeat(4, minmax(0px, 1fr));
  gap: 20px;
}

.ech-submenu-item{ margin:0px; padding:0px; }
.ech-submenu-link{
  display:block;
  padding: 8px 12px;
  text-decoration:none;
  background: rgb(0,84,134);
  color: rgb(242,242,242);
  text-align: center;
}
.ech-submenu-link:hover,
.ech-submenu-link:focus{
  text-decoration: underline;
}

/* Desktop Hover öffnet Submenu */
.ech-nav-item.has-sub:hover > .ech-submenu,
.ech-submenu:hover{ display:block; }

@media (prefers-color-scheme: dark){
  .ech-submenu{
    background: rgb(242,242,242);
    color: rgb(0,84,134);
  }
  .ech-submenu-link{
    background: rgb(242,242,242);
    color: rgb(0,84,134);
  }
}

@media (max-width: 900px){
  .ech-submenu-inner { grid-template-columns: repeat(3, minmax(0px, 1fr)); }
}
@media (max-width: 700px){
  .ech-submenu-inner { grid-template-columns: repeat(2, minmax(0px, 1fr)); }
}

/* --- Tablet/Handy: Desktop-Submenu-Leiste (2. Ebene fixed) AUS,
   damit kein blauer/weißer Balken erscheint. --- */
@media (max-width: 900px){
  .ech-submenu{ display: none; }
}