body.ui-style-5 {
  font-size: 16px;
}

.main-content {
  animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.video-card {
  transition: all 0.3s ease;
}

.video-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.btn {
  display: inline-block;
  padding: 10px 25px;
  background: #2c5aa0;
  color: #fff;
  border-radius: 5px;
  transition: background 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 14px;
}

.btn:hover {
  background: #1a3d7a;
}

footer {
  background: #2c3e50;
  color: #ecf0f1;
  padding: 30px 20px;
  text-align: center;
  margin-top: 50px;
}

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

@media (max-width: 768px) {
  .grid-auto {
    grid-template-columns: 1fr;
  }

  body.ui-style-5 {
    font-size: 14px;
  }

  .container {
    padding: 0 15px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 24px !important;
  }

  h2 {
    font-size: 20px !important;
  }
}