/* Main Styles */
body {
  font-family: 'Arial', sans-serif;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  transition: background-color 0.5s ease;
}

.container {
  text-align: center;
  border: 2px solid #333;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  background-color: #f9f9f9;
}

h1 {
  margin-bottom: 20px;
}

#start-btn {
  padding: 10px 20px;
  font-size: 16px;
  border: none;
  border-radius: 5px;
  background-color: #007bff;
  color: #fff;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

#start-btn:hover {
  background-color: #0056b3;
}

/* Loading Animation Styles */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin-top: 20px;
  visibility: hidden; /* Hidden by default */
}

.loading span {
  width: 4px;
  height: 50px;
  background: #4c86f9;
  animation: scale 0.9s ease-in-out infinite;
}

.loading span:nth-child(2) { background: #ff0033; animation-delay: -0.8s; }
.loading span:nth-child(3) { background: #00ff00; animation-delay: -0.7s; }
.loading span:nth-child(4) { background: #0274f6; animation-delay: -0.6s; }
.loading span:nth-child(5) { background: #f2ff00; animation-delay: -0.5s; }

@keyframes scale {
  0%, 40%, 100% { transform: scaleY(0.05); }
  20% { transform: scaleY(1); }
}