body {
  background: #000;
  color: #fff;
  font-family: 'Courier New', monospace;
}

.card {
  background: #111;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 0 20px rgba(255, 221, 0, 0.25);
  transition: transform 0.3s;
  width: 100%;
  max-width: 520px;
  text-align: center;
  margin: auto;
}
.card:hover { transform: translateY(-5px); }

.card h3 {
  color: #ffdd00;
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
}

.card input, .card button {
  width: 100%;
  margin-top: 0.7rem;
  border-radius: 8px;
  padding: 0.7rem;
  border: none;
}

.card input {
  background: #000;
  color: #fff;
  border: 1px solid #555;
}

.card button {
  background: linear-gradient(90deg, #ffdd00, #ffaa00);
  color: #111;
  font-weight: bold;
  transition: 0.3s;
  box-shadow: 0 0 10px rgba(255, 221, 0, 0.3);
}
.card button:hover {
  transform: scale(1.03);
  background: linear-gradient(90deg, #ffaa00, #ffdd00);
}

#message {
  margin-top: 15px;
  color: #ffdd00;
  font-weight: bold;
}

pre {
  margin-top: 15px;
  color: #fff;
  text-align: left;
  background: #1e1e1e;
  padding: 12px;
  border-radius: 8px;
  max-height: 400px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
}