body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(to bottom right, #f5f7fa, #e4ecf1);
  height: 100vh;
  overflow: hidden;
}

input {
  background: transparent;
  border: none;
  font-size: 1rem;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}