Dark Primary Glow

.btn-dark-primary-glow {
  display: inline-block;
  padding: 12px 26px;
  border: none;
  border-radius: 10px;
  background: #3b82f6;
  color: #ffffff;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.45);
  transition: box-shadow 0.2s ease, background 0.2s ease;
}
.btn-dark-primary-glow:hover {
  background: #2563eb;
  box-shadow: 0 6px 28px rgba(59, 130, 246, 0.65);
}
.btn-dark-primary-glow:active {
  box-shadow: 0 2px 10px rgba(59, 130, 246, 0.45);
}