/* Oberste Navigationsleiste – neuer animierter Farbverlauf mit mehreren Wellen */
/* Oberste Navigationsleiste – moderner animierter Farbverlauf mit Glanz und Glass-Effekt */
.navbar-top {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 9999;
  background: linear-gradient(270deg,
    rgba(0, 168, 255, 0.7),
    rgba(0, 255, 221, 0.6),
    rgba(255, 255, 255, 0.6),
    rgba(0, 168, 255, 0.7)
  );
  background-size: 800% 800%;
  animation: gradientShift 15s ease infinite;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  box-shadow: 0 4px 20px rgba(0, 168, 255, 0.3);
  color: white;
  overflow: hidden;
}

.navbar-top::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center,
    rgba(255, 255, 255, 0.15),
    transparent 70%
  );
  animation: shimmer 6s linear infinite;
  pointer-events: none;
  z-index: 1;
}

.navbar-top > * {
  position: relative;
  z-index: 2;
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes shimmer {
  0% {
    transform: rotate(0deg) translateX(-50%);
  }
  100% {
    transform: rotate(360deg) translateX(50%);
  }
}