body {
  background-color: #0e0e0e;
  color: #d4ffd4;
  font-family: 'Courier New', monospace;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.container {
  text-align: center;
  background-color: #1a1a1a;
  padding: 40px;
  border-radius: 10px;
  box-shadow: 0 0 15px rgba(0, 255, 100, 0.3);
  width: 90%;
  max-width: 600px;
}

h1 {
  margin-bottom: 20px;
  color: #9effa9;
}

.shell {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

textarea {
  background-color: #111;
  color: #d4ffd4;
  border: 1px solid #444;
  padding: 10px;
  font-size: 1rem;
  border-radius: 5px;
  resize: none;
  height: 100px;
}

button {
  background-color: #27ae60;
  color: #fff;
  border: none;
  padding: 10px;
  border-radius: 5px;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s ease;
}

button:hover {
  background-color: #1f8a4c;
}

#response {
  margin-top: 15px;
  background-color: #0d2d1f;
  border-left: 4px solid #27ae60;
  padding: 10px;
  border-radius: 5px;
  color: #d4ffd4;
  white-space: pre-wrap;
}