body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #1c1c1c;
  color: #f0f0f0;
  margin: 0;
  padding: 2em;
}

.container {
  max-width: 600px;
  margin: auto;
  background-color: #2c2c2c;
  padding: 2em;
  border-radius: 10px;
  box-shadow: 0 0 10px #000;
}

h2 {
  text-align: center;
  margin-bottom: 1em;
  color: #fff;
}

label {
  font-weight: bold;
  display: block;
  margin-top: 1em;
}

input, select, button {
  width: 100%;
  padding: 0.6em;
  margin-top: 0.5em;
  border: none;
  border-radius: 5px;
  font-size: 1em;
}

input, select {
  background-color: #444;
  color: #fff;
}

button {
  background-color: #555;
  color: #fff;
  cursor: pointer;
}

button:hover {
  background-color: #666;
}

pre {
  background-color: #333;
  padding: 1em;
  margin-top: 1em;
  border-radius: 5px;
  overflow-x: auto;
}

.buttons {
  display: flex;
  gap: 10px;
  margin-top: 1em;
}