.seiten-navigation {
  position: sticky;
  top: 5%;
  width: 550px; 
  max-width: 90%;
  z-index: 5000;
  border-radius: 1000px;
  padding: 0.75rem 3rem;
  margin: 10px auto;
  font-size: 1em;
  background: var(--ui-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid var(--border-color);
  filter: drop-shadow(0px 8px 20px rgba(0, 0, 0, 0.2));
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.seiten-navigation a {
  color: var(--text);
  text-decoration: none;
  font-weight: bold;
  transition: opacity 0.5s ease;
}

.seiten-navigation a:hover {
  opacity: 0.5;
}

.seiten-navigation ul {
  justify-content: center;
  list-style: none;
  display: flex;
  gap: 6rem;
  margin: 0;
  padding: 0;
  font-size: 0.8rem;
}

#navigation-toggle {
  display: none;
}

@media (max-width: 800px) {
  #navigation-toggle {
    display: flex;
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    bottom: 1rem;
    z-index: 1003;
    padding: 25px 40px;
    border: 1px solid var(--text);
    border-radius: 1000px;
    background: transparent;
    color: var(--text);
    font-size: 23px;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(10px);
  }

  #navigation-toggle:hover {
    background-color: var(--text);
    color: var(--bg-solid);
  }

  .seiten-navigation {
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1002;
    visibility: hidden;
    translate: 0 100%;
    transition: translate 300ms ease, visibility 300ms ease;
    background: var(--ui-bg);
    padding: 1rem 1.5rem;
    min-height: 50%;
    border-radius: 0;
    width: 85% !important;
    border-radius: 30px 30px 0 0;
    bottom: -5% !important;

  }

  .seiten-navigation ul {
    flex-direction: column;
    gap: 0;
    padding-bottom: 60px;
  }

  .seiten-navigation a {
    display: block;
    padding: 1em;
  }
}

[nav-sichtbar] .seiten-navigation {
  translate: 0 0%;
  visibility: visible;
  width: 100%;
}

#navigation-overlay {
  position: fixed;
  inset: 0;
  z-index: 1001;
  background: rgba(0, 0, 0, 0.172);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 300ms, visibility 300ms;
}

[nav-sichtbar] #navigation-overlay {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}