body {
  margin: 0;
  padding: 0;
  height: 100vh;
  width: 100vw;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
  font-family: sans-serif;
  position: relative;

}

#background-link::before {
  content: '';
  display: block;
  width: 100%;
  height: 100%;
}

#background-link {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  outline: none;
  border: none;
}

#background-link:focus {
  outline: none;
}

.logo-container {
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0;
  transition: opacity 1.5s ease;
}

.logo-container.visible {
  opacity: 1;
}

.logo-container.fade-out {
  opacity: 0;
  transition: opacity 0.8s ease;
}

.logo {
  width: 400px; /* doppelte Größe */
  height: auto;
  cursor: pointer;
}

.hidden {
  display: none;
}