/* ============================================================
   zertifikate.css – Zertifikate-Galerie (PDF-Vorschau + Lightbox)
   ============================================================ */

.cert-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.cert-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}
.cert-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.14);
}

.cert-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.cert-preview {
  position: relative;
  aspect-ratio: 3 / 4;
  background: #f4f1ea;
  overflow: hidden;
}

.cert-preview embed {
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none; /* Klick öffnet die Lightbox, nicht den PDF-Viewer */
}

.cert-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: #f4f1ea;
  color: var(--color-gold-dark);
}
.cert-placeholder-icon {
  font-size: 2.4rem;
}
.cert-placeholder-text {
  font-size: 0.75rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  opacity: 0.7;
}

.cert-label {
  display: block;
  padding: 10px 12px;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

@media (max-width: 1024px) {
  .cert-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
}