body {
  margin: 0;
  height: 100vh;
  background: linear-gradient(180deg, #A77BCA, #5C4B8A);
  font-family: Arial, sans-serif;
}

.main-content {
  margin: 0 auto;
  padding: 20px;
}

.hero {
  background-color: #6d54a6;
  padding: 20px;
  border-radius: 10px;
  margin-bottom: 20px;
  text-align: center;
}

.card-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.card {
  background-color: #6A5ACD;
  color: white;
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  animation: fadeIn 0.5s ease-in-out;
}

.card h3 {
  margin-top: 0;
}

.card img {
  display: block;
  margin: 0 auto 15px;
  width: 100%;
  height: auto;
  border-radius: 5px;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  margin-top: 10px;
  color: white;
  background-color: #483D8B;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn:hover {
  background-color: #36275D;
  transform: scale(1.05);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 12px rgba(0, 0, 0, 0.3);
}

.card p {
  transition: opacity 0.3s ease;
  margin: 10px 0;
  line-height: 1.4;
  font-size: 0.9em;
}

.card:hover p {
  opacity: 0.9;
}

.card:hover img {
  transform: scale(1.05);
}

.sidebar {
  background-color: #483D8B;
  transition: background-color 0.3s ease;
}

.sidebar a {
  transition: color 0.3s ease;
}

.sidebar a:hover {
  color: #A77BCA;
}

@media (max-width: 1200px) {
  .card-container {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 900px) {
  .card-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .card-container {
    grid-template-columns: 1fr;
  }
}