/* Library screen — Manuals + 3D Models split view with previews. */

.split-content {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: clamp(1rem, 3vw, 2rem);
  max-width: 1300px;
  margin: 0 auto;
  padding: clamp(1.25rem, 2.5vw, 2rem);
  align-items: start;
}

.split-pane {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.split-pane-header {
  padding: 0 0.25rem 0.9rem;
  margin-bottom: 0.9rem;
  border-bottom: 1px solid var(--hairline);
}

.split-pane-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  text-transform: uppercase;
  margin: 0;
}

.split-pane-subtitle {
  display: none;
}

.split-pane-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.split-divider {
  width: 1px;
  align-self: stretch;
  background: var(--hairline);
  min-height: 100%;
}

/* Resource row — title | download */
.resource-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 0.65rem 0.9rem;
  background: var(--bg-elev);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  transition: background 0.15s ease, border-color 0.15s ease;
}

.resource-row:hover {
  background: var(--bg-elev-2);
  border-color: rgba(255, 255, 255, 0.18);
}

.resource-info {
  min-width: 0;
}

.resource-info h3 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}

.resource-info p {
  display: none;
}

.download-button.compact {
  width: auto;
  min-width: 58px;
  padding: 0.4rem 0.85rem;
  font-size: 0.75rem;
  letter-spacing: 0.3px;
}

@media (max-width: 820px) {
  .split-content {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .split-divider {
    width: auto;
    height: 1px;
    min-height: 0;
  }
}