body.dark-theme {
  background-color: #121212;
  color: #ffffff;
  font-family: 'Arial', sans-serif;
}

.container {
  max-width: 800px;
  margin: auto;
  padding: 20px;
}

header h1 {
  text-align: center;
  color: #4caf50;
}

.api-key-input {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
}

.api-key-input input {
  flex-grow: 1;
  padding: 10px;
  margin-right: 10px;
  border: 1px solid #333;
  background-color: #333;
  color: white;
}

.api-key-input button {
  padding: 10px 20px;
  background-color: #4caf50;
  border: none;
  color: white;
  cursor: pointer;
}

.device-info {
  background-color: #333;
  padding: 15px;
  border-radius: 5px;
}

.device-info > div {
  border-bottom: 1px solid #222;
  padding: 10px 0;
}

.device-info > div:last-child {
  border-bottom: none;
}

.device-info p {
  margin: 5px 0;
}

.api-key-guide {
  background-color: #222;
  border-radius: 5px;
  padding: 20px;
  margin-top: 20px;
}

.api-key-guide h2 {
  color: #4caf50;
}

.api-key-guide ol {
  padding-left: 20px;
}

.api-key-guide li {
  margin-bottom: 10px;
}

.api-key-guide a {
  color: #4caf50;
  text-decoration: none;
}

.api-key-guide a:hover {
  text-decoration: underline;
}

.api-key-guide p {
  font-style: italic;
  margin-top: 10px;
}