.certificate-card {
  border: 1px solid #e9ecef;
  border-radius: 14px;
  overflow: hidden;
  background: #ffffff;
  transition: transform 0.25s ease, box-shadow 0.25s ease,
    border-color 0.25s ease;
}

.certificate-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
  border-color: #0d6efd;
}

.certificate-card img {
  object-fit: cover;
}

.certificate-card .btn {
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 16px;
  transition: all 0.25s ease;
}

.certificate-card .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(13, 110, 253, 0.35);
}

@media (max-width: 576px) {
  .certificate-card {
    border-radius: 10px;
  }
}