.certs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
@media (min-width: 640px) {
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .certs-grid { grid-template-columns: repeat(3, 1fr); }
}

.cert-card {
  background: var(--color-bg-base);
  border: 1px solid var(--color-bg-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.cert-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-brand);
}
.cert-card:hover {
  border-color: rgba(124,58,237,0.35);
  box-shadow: var(--shadow-glow-violet);
}

.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  background: rgba(6,182,212,0.1);
  border: 1px solid rgba(6,182,212,0.25);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-3);
  width: fit-content;
}
.cert-badge-pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-3);
  animation: pulse 1.8s ease-in-out infinite;
}

.cert-icon {
  width: 48px;
  height: 48px;
}

.cert-card h3 { font-size: 1.05rem; color: var(--color-text-primary); }
.cert-issuer {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.cert-benefit {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* 5th card on 3-col goes center in last row */
@media (min-width: 1024px) {
  .cert-card:nth-child(4) { grid-column: 1 / 2; }
  .cert-card:nth-child(5) { grid-column: 2 / 3; }
}

@media (prefers-reduced-motion: reduce) {
  .cert-badge-pulse { animation: none; }
}