* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  background-color: #e7ecf5;
}

.top-bar {
  background-color: #f5f5f5;
  padding: 5px 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #ccc;
}

.home-button {
  padding: 10px 15px;
  background-color: #007c91;
  color: white;
  border: none;
  cursor: pointer;
}

.top-right {
  font-size: 14px;
  color: #333;
}

.main-header {
  background-color: #007c91;
  padding: 20px;
  color: white;
}

.main-header h1 {
  margin: 0;
  font-size: 28px;
}

.main-content {
  background-color: white;
  margin: 20px auto;
  padding: 30px;
  max-width: 900px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.available-courses h2 {
  font-size: 18px;
  margin-bottom: 20px;
  color: #444;
}

.available-courses ul {
  list-style: none;
}

.available-courses li {
  padding: 15px;
  margin-bottom: 10px;
  background-color: #f9f9f9;
  border-left: 5px solid #007c91;
  display: flex;
  align-items: center;
  font-size: 16px;
}

.available-courses li a {
  text-decoration: none;
  color: #007c91;
  margin-left: 10px;
}

.available-courses li.greyed {
  background-color: #f1f1f1;
  color: #aaa;
}

.available-courses li.greyed a {
  color: #aaa;
  pointer-events: none;
}

.lock-icon {
  font-size: 18px;
}

.footer {
  background-color: #007c91;
  color: white;
  text-align: center;
  padding: 20px;
  font-size: 14px;
}

.footer a {
  color: #ffee58;
  text-decoration: none;
}

.footer .moodle-logo {
  font-size: 18px;
  font-weight: bold;
  margin: 10px 0;
}