body.ui-style-6 {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
}

article:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15) !important;
}

a {
  transition: color 0.3s ease;
}

a:hover {
  opacity: 0.8;
}

@media (max-width: 768px) {
  main {
    padding: 0 0.5rem !important;
  }

  section {
    padding: 1rem !important;
  }

  h1 {
    font-size: 1.5rem !important;
  }

  h2 {
    font-size: 1.2rem !important;
  }
}

.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #007bff;
  color: #fff;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.3s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.scroll-to-top.visible {
  opacity: 1;
}

.scroll-to-top:hover {
  background: #0056b3;
}