body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(to right, #9c27b0, #3f51b5);
  color: white;
}

header {
  padding: 1em;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.1);
  position: sticky;
  top: 0;
  z-index: 10;
}

nav ul {
  display: flex;
  gap: 1em;
  list-style: none;
  padding: 0;
}

nav li {
  cursor: pointer;
  background: rgba(0,0,0,0.2);
  padding: 0.5em 1em;
  border-radius: 10px;
  transition: background 0.3s ease;
}
nav li:hover {
  background: rgba(255,255,255,0.2);
}

.screen {
  display: none;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

.screen.active {
  display: block;
}

.screen iframe {
  width: 100%;
  height: 100%;
  border: none;
}

#products {
  padding: 2em;
  animation: fadeIn 0.5s ease-in;
  overflow-y: auto;
}

#product-area div {
  padding: 10px;
  margin: 5px 0;
  background: rgba(255,255,255,0.1);
  border-radius: 8px;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}