body {
  font-family: monospace;
  background-color: #111;
  color: #0f0;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 700px;
  margin: 0 auto;
  padding: 20px;
}

h1 {
  text-align: center;
  margin-bottom: 10px;
}

.screen {
  background-color: #000;
  border: 1px solid #0f0;
  padding: 20px;
  min-height: 120px;
  font-size: 1rem;
  white-space: pre-wrap;
  text-align: left;
  margin-bottom: 10px;
}

.progress {
  text-align: center;
  margin-bottom: 20px;
  font-weight: bold;
  color: #0f0;
}

.button-group,
.input-group,
.exit-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
}

button {
  background-color: black;
  color: #0f0;
  border: 1px solid #0f0;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  width: 90%;
  max-width: 300px;
}

button:hover {
  background-color: #0f0;
  color: black;
}

input {
  padding: 10px;
  width: 80%;
  border: 1px solid #0f0;
  background-color: black;
  color: #0f0;
  font-size: 16px;
}