:root {
  --primary-color: #007bff;
  --background-color: #ffffff;
  --text-color: #000000;
}

body.stt-dark-mode {
  --primary-color: #66aaff;
  --background-color: #121212;
  --text-color: #ffffff;
}

.stt-container {
  text-align: center;
  background: var(--background-color);
  color: var(--text-color);
  padding: 30px;
  border-radius: 12px;
  max-width: 600px;
  margin: 30px auto;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  font-family: Arial, sans-serif;
}

.stt-container h2 {
  color: var(--primary-color);
  font-size: 28px;
  margin-bottom: 20px;
}

.stt-metrics {
  font-size: 20px;
  margin-bottom: 20px;
}

.stt-container button {
  padding: 10px 20px;
  font-size: 18px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

canvas {
  margin-top: 30px;
}

.stt-logo {
  width: 120px;
  margin-bottom: 20px;
}

.stt-toggle {
  margin-bottom: 15px;
  background: #444;
  color: white;
  font-size: 14px;
  padding: 8px 12px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
}