/* ---------- grid ---------- */
.pgcert-grid-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 10px;
  height: 75vh;
  margin-top: 1.5rem;
  box-sizing: border-box;
}

.pgcert-grid-item {
  color: var(--accent);
  border: 1px solid var(--ink);
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 10px;
  word-wrap: break-word;
  overflow-wrap: break-word;
  background-size: cover;
  background-position: center;
  cursor: pointer;
  font-weight: 500;
  transition: background-color 120ms ease;
}

.pgcert-grid-item:hover,
.pgcert-grid-item.active {
  background-color: rgba(0, 0, 0, 0.08);
}

/* ---------- hidden checkbox triggers (kept for a11y semantics, not visually used) ---------- */
.popup-toggle {
  display: none;
}

/* ---------- overlay panel — flows underneath the grid ---------- */
.overlay-container {
  padding: 30px 0 60px 0;
  pointer-events: none;
}

.overlay {
  display: none;
  position: relative;
  height: auto;
  width: 100%;
  max-width: var(--measure);
  background: transparent;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  pointer-events: auto;
}

.overlay p {
  background: var(--bg);
  padding: 10px 0 2rem 0;
  max-width: var(--measure);
  font-size: 1rem;
  line-height: 1.65;
}

.close-btn {
  position: absolute;
  top: 0;
  right: 0;
  font-size: 1.75rem;
  color: var(--ink);
  cursor: pointer;
  line-height: 1;
}
.close-btn:hover {
  color: var(--accent);
}

/* ---------- mobile ---------- */
@media (max-width: 999px) {
  .pgcert-grid-container {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto;
    height: auto;
  }
}