Gradient Border

.btn-gradient-border {
  display: inline-block;
  padding: 12px 26px;
  border: 2px solid transparent;
  border-radius: 12px;
  background: linear-gradient(#0d1017, #0d1017) padding-box, linear-gradient(135deg, #f472b6, #818cf8) border-box;
  color: #e2e8f0;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s ease, box-shadow 0.2s ease;
}
.btn-gradient-border:hover {
  background: linear-gradient(135deg, #f472b6, #818cf8) border-box;
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(129, 140, 248, 0.4);
}
.btn-gradient-border:active {
  box-shadow: none;
}