.gradient-demo {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
}
.gradient-card {
  padding: 2rem 1rem;
  border-radius: 0.5rem;
  text-align: center;
  font-weight: bold;
  color: white;
  transition: color 0.3s ease;
}
.gradient-card:hover {
  color: #ffff00;
}
.gradient-linear {
  background: linear-gradient(135deg, currentColor, transparent);
}
.gradient-radial {
  background: radial-gradient(circle, currentColor, rgba(255,255,255,0.1));
}
.gradient-conic {
  background: conic-gradient(from 45deg, currentColor, transparent, currentColor);
}