#progress {
  width: 100%;
  height: 6px;
  position: fixed;
  top: 40px;
  left: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
  overflow: hidden;
  transition: opacity 0.3s ease;
}

#progress.hidden {
  opacity: 0;
}

#progress .bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #7c5cff, #00e5ff, #7c5cff);
  background-size: 200% 100%;
  transition: width 0.5s ease;
  box-shadow:
    0 0 10px rgba(124, 92, 255, 0.3),
    0 0 20px rgba(0, 229, 255, 0.2);
}

#progress.active .bar {
  animation: glowMove 2s linear infinite;
}

@keyframes glowMove {
  0%   { background-position: 0%   50%; }
  100% { background-position: 200% 50%; }
}