body.ui-style-0 {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

a {
  transition: color 0.3s, opacity 0.3s;
}

a:hover {
  opacity: 0.8;
}

@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }

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

  h2 {
    font-size: 1.3rem !important;
  }
}

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--primary-color);
  color: white;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translateY(-4px);
}