body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.quiz-container {
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  padding: 20px;
  width: 90%;
  max-width: 400px;
  text-align: center;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  margin-bottom: 15px;
}

#question-text {
  font-size: 20px;
  margin-bottom: 15px;
}

#options-list {
  list-style: none;
  padding: 0;
}

#options-list li {
  background: #f1f1f1;
  margin: 8px 0;
  padding: 10px;
  border-radius: 5px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background 0.3s, border 0.3s;
}

#options-list li:hover {
  background: #4db922;
}

.selected {
  border: 2px solid #117aeb; /* Blue border */
  background: #0779f3;       /* Blue background */
  color: red;              /* White text for contrast */
}

button {
  background: #007BFF;
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  margin-top: 15px;
}

button:disabled {
  background: #aaa;
  cursor: not-allowed;
}

#result-screen h2 {
  color: #333;
}

#score-text {
  font-size: 18px;
  margin: 10px 0;
}