:root {
    --primary-color: #4F7CAC;
    --secondary-color: #91B7D9;
    --accent-color: #F4D03F;
    --danger-color: #e74c3c;
  }

  .hero-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  }
  .btn-primary {
    transition: transform 0.3s ease, background-color 0.3s ease;
  }
  .btn-primary:hover {
    transform: scale(1.05);
  }
  .testimonial-card {
    transition: transform 0.3s ease;
  }
  .testimonial-card:hover {
    transform: translateY(-5px);
  }
  .countdown {
    font-size: 1.1rem;
    color: var(--danger-color);
    margin-bottom: 1rem;
    font-weight: bold;
  }
  .instructor-img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 50%;
    margin: 0 auto 1rem auto;
  }