.pdfViewerModule {
  --pdf-sticky-top: 0px;
  position: relative;
}

/* ── Toolbar ── */
#toolbar {
  background: #16213e;
  border-bottom: 1px solid #0f3460;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  position: sticky;
  top: var(--pdf-sticky-top);
  z-index: 10001;
  box-shadow: 0 2px 10px rgba(0,0,0,0.4);
}

.toolbarGroup {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: nowrap;
  white-space: nowrap;
}

.toolbarGroupSeparated {
  flex-shrink: 0;
  border-right: 2px solid #2886ab;
  padding-right: 12px;
}

#toolbar .btnDownload {
  text-decoration: none;
  font-weight: 600;
  white-space: nowrap;
}

#toolbar .btnDownload:hover,
#toolbar .btnDownload:focus,
#toolbar .btnDownload:active,
#toolbar .btnDownload:visited {
  text-decoration: none;
}

.btn {
  background: #0f3460;
  color: #e0e0e0;
  border: 1px solid #1a4a80;
  border-radius: 6px;
  padding: 6px 14px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: background 0.2s, transform 0.1s;
  user-select: none;
}
.btn:hover  { background: #1a5a9a; }
.btn:active { transform: scale(0.96); }
.btn:disabled { opacity: 0.35; cursor: default; }

#pageInfo {
  font-size: 0.85rem;
  color: #a0a0c0;
  text-align: center;
}

#pageInput {
  width: 50px;
  padding: 5px 6px;
  border-radius: 6px;
  border: 1px solid #1a4a80;
  background: #0f3460;
  color: #e0e0e0;
  font-size: 0.85rem;
  text-align: center;
}

#zoomLabel {
  font-size: 0.85rem;
  color: #a0a0c0;
  text-align: center;
}

/* ── Loading / Error ── */
#statusBar {
  text-align: center;
  padding: 40px 20px;
  font-size: 1rem;
}
#statusBar .spinner {
  display: inline-block;
  width: 36px; height: 36px;
  border: 4px solid #0f3460;
  border-top-color: #e94560;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 14px;
}
@keyframes spin { to { transform: rotate(360deg); } }
#statusBar.error { color: #ff6b6b; }

/* ── Canvas wrapper ── */
#viewerContainer {
  overflow-y: auto;
  overflow-x: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  background: #1a1a2e;
}

.pageWrapper {
  flex: 0 0 auto;
  position: relative;
  box-shadow: 0 4px 24px rgba(0,0,0,0.6);
  border-radius: 3px;
  background: #fff;
  line-height: 0; /* eliminuje mezeru pod canvas */
  max-width: none;
}

canvas {
  display: block;
  width: auto;
  max-width: none;
}

.pdfViewerModule.pdfViewerModuleFitWidth .pageWrapper {
  max-width: 100%;
}

.pdfViewerModule.pdfViewerModuleFitWidth canvas {
  width: 100%;
  height: auto;
  max-width: 100%;
}

/* ── Scrollbar ── */
#viewerContainer::-webkit-scrollbar { width: 8px; }
#viewerContainer::-webkit-scrollbar-track { background: #16213e; }
#viewerContainer::-webkit-scrollbar-thumb { background: #0f3460; border-radius: 4px; }
#viewerContainer::-webkit-scrollbar-thumb:hover { background: #1a5a9a; }