/* === AVL Learning System Styles === */

body {
  font-family: "Kanit", sans-serif;
  background-color: #f8f9fa;
  color: #333;
}

.lesson-container, .quiz-container, .quiz-result, .certificate-container {
  background: #fff;
  padding: 30px;
  margin-top: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

h2, h1 {
  color: #0073aa;
  font-weight: 600;
}

button, a.button, .btn {
  background-color: #0073aa;
  color: white;
  padding: 10px 24px;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  margin-top: 10px;
  transition: 0.3s;
}

button:hover, a.button:hover, .btn:hover {
  background-color: #005f8d;
}

input[type="radio"] {
  margin-right: 8px;
}