.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.gallery .card {
  border: 1px solid #dee2e6;
  border-radius: 0.5rem;
  overflow: hidden;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.gallery .card:hover {
  box-shadow: 0 0.5rem 1.25rem rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.gallery .card .deck {
  display: block;
}

.gallery .card img {
  display: block;
  width: 100%;
  border-bottom: 1px solid #dee2e6;
}

.gallery .card .label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.9rem;
  font-weight: 600;
  font-family: var(--bs-font-monospace, monospace);
}

.gallery .card .label a {
  text-decoration: none;
}

/* Title shrinks (truncating if needed) so it never overlaps the buttons. */
.gallery .card .label > a {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.gallery .card .label .links {
  display: flex;
  gap: 0.4rem;
  flex-shrink: 0;
  margin-left: 0.6rem;
}

.gallery .card .label .pdf {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.1rem 0.5rem;
  border: 1px solid #adb5bd;
  border-radius: 0.25rem;
  color: #495057;
}

.gallery .card .label .pdf:hover {
  background: #f1f3f5;
}

/* In-page deck viewer (no page transition) */
.deck-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.8);
}

.deck-modal.open {
  display: flex;
}

.deck-modal .frame {
  position: relative;
  width: min(92vw, calc(88vh * 16 / 9));
  aspect-ratio: 16 / 9;
  background: #fff;
  border-radius: 0.4rem;
  overflow: hidden;
  box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.45);
}

.deck-modal iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.deck-modal .close {
  position: absolute;
  top: -2.4rem;
  right: 0;
  width: 2rem;
  height: 2rem;
  border: 0;
  border-radius: 0.25rem;
  background: rgba(255, 255, 255, 0.9);
  color: #212529;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
}