body {
  background-color: #000;
  color: #0f0;
  font-family: 'Courier New', monospace;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: 50px;
  height: 100vh;
  animation: flicker 2s infinite alternate;
}

@keyframes flicker {
  0% { opacity: 1; }
  50% { opacity: 0.95; }
  100% { opacity: 1; }
}

h1 {
  margin-bottom: 20px;
  font-size: 2em;
  text-shadow: 0 0 10px #0f0;
  animation: glow 1s infinite alternate;
}

@keyframes glow {
  from {
    text-shadow: 0 0 5px #0f0;
  }
  to {
    text-shadow: 0 0 20px #0f0;
  }
}

input, button {
  background-color: #111;
  color: #0f0;
  border: 1px solid #0f0;
  padding: 10px 20px;
  margin: 10px;
  width: 320px;
  text-align: center;
  outline: none;
  box-shadow: 0 0 10px #0f0;
  transition: all 0.2s;
}

button:hover {
  background-color: #0f0;
  color: #000;
  box-shadow: 0 0 20px #0f0;
}

.log {
  margin-top: 20px;
  width: 90%;
  max-height: 400px;
  overflow-y: auto;
  background-color: #111;
  padding: 10px;
  border: 1px solid #0f0;
  font-size: 0.9em;
  box-shadow: inset 0 0 10px #0f0;
}

.log div {
  margin-bottom: 5px;
}