/* card hover */
  .social-card {
    transition: border-color 0.2s, background 0.2s, transform 0.2s;
  }
  .social-card:hover {
    transform: translateY(-1px);
  }

  /* icon glow on hover */
  .social-card:hover .card-icon {
    opacity: 1;
  }
  .card-icon {
    opacity: 0.55;
    transition: opacity 0.2s;
  }