body {
  font-family: Arial, sans-serif;
  background: #ffffff;
  color: #333;
  text-align: center;
  padding: 20px;
}

.logo {
  width: 100%;
  max-width: 500px; /* optional: cap max size */
  height: auto;     /* preserves aspect ratio */
  display: block;
  margin: 0 auto 20px; /* center and space below */
}

.app-container {
  max-width: 600px;
  margin: 0 auto;
}

.session-info {
  margin-bottom: 30px;
}

.extension-options button {
  font-size: 18px;
  padding: 15px 25px;
  margin: 10px;
  border: none;
  border-radius: 8px;
  background-color: #007BFF;
  color: white;
  cursor: pointer;
  transition: background 0.3s;
}

.extension-options button:hover {
  background-color: #0056b3;
}

#countdown-alert {
  border: 2px solid #ff0000;
  background-color: #fff0f0;
  padding: 15px;
  border-radius: 10px;
  font-size: 20px;
  font-weight: bold;
  color: #cc0000;
  display: inline-block;
}