.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2em;
  padding: 2em;
}

.cert-item {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 2em;
  transition: transform 0.3s ease, background-color 0.3s ease;
}

.cert-item:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.1);
}

.cert-item h3 {
  color: #ffffff;
  margin-bottom: 1em;
  font-size: 1.5em;
}

.cert-icon {
  font-size: 2em;
  margin-bottom: 1em;
  color: #9bf1ff;
}

.cert-meta {
  margin-top: 1.5em;
  padding-top: 1em;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cert-date {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9em;
}

.cert-issuer {
  color: #9bf1ff;
  font-weight: 600;
}

@media screen and (max-width: 736px) {
  .cert-grid {
    grid-template-columns: 1fr;
    padding: 1em;
  }
}