body {
  margin: 0;
  padding: 0;
  font-family: 'Share Tech Mono', monospace;
  overflow-x: hidden;
  background-color: #000;
  color: #aafcff;
  transition: background 1s ease, color 1s ease;
}
.cyan-theme { background-color: #00111a; color: #aafcff; }
.light-mode { background-color: #f8f9fa; color: #1e293b; }
.amber-theme { background-color: #1a0f00; color: #ffbf00; }
.green-theme { background-color: #001a00; color: #00ff99; }
#terminal { padding: 20px; min-height: 100vh; white-space: pre-wrap; }
.prompt { color: inherit; }
input {
  background: transparent;
  border: none;
  color: inherit;
  font-family: inherit;
  font-size: 1rem;
  outline: none;
  width: 80%;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}