/* Modern Futuristic UI */
body {
  font-family: 'Roboto', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #0e1a26;
  color: #ffffff;
  overflow: hidden;
}

.background-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(120deg, #1f3a93, #0e1a26, #2c3e50);
  background-size: 400% 400%;
  animation: gradientAnimation 15s ease infinite;
  z-index: -1;
}

@keyframes gradientAnimation {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.container {
  max-width: 600px;
  margin: 50px auto;
  padding: 20px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  backdrop-filter: blur(5px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

h1 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 20px;
}

#progressTracker {
  margin-bottom: 10px;
  font-size: 16px;
  text-align: center;
  color: #bbb;
}

#levelTitle {
  font-size: 24px;
  margin-bottom: 10px;
  text-align: center;
}

.objective {
  margin: 10px 0;
  padding: 15px;
  background-color: rgba(0, 0, 0, 0.5);
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.objective span {
  display: block;
  margin-bottom: 5px;
  font-size: 22px;
}

.objective a {
  color: #3498db;
  text-decoration: none;
}

.objective a:hover {
  text-decoration: underline;
}

.complete-btn {
  background-color: #3498db;
  color: white;
  border: none;
  padding: 5px 15px;
  border-radius: 5px;
  cursor: pointer;
}

.complete-btn:disabled {
  background-color: #555;
}

.next-level-btn {
  background-color: #2ecc71;
  color: white;
  border: none;
  padding: 10px 20px;
  font-size: 16px;
  border-radius: 5px;
  cursor: pointer;
  width: 100%;
  margin-top: 20px;
}

.next-level-btn:disabled {
  background-color: #555;
}