.pdf-flipbook {
  border: 1px solid #eee;
  border-radius: 8px;
  background: #f7f8fb;
}

.pdf-flipbook-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  background: #fff;
  border-bottom: 1px solid #eee;
  border-top-left-radius: 8px;
  border-top-right-radius: 8px;
}

.pdf-flipbook-spacer { flex: 1 1 auto; }
.pdf-flipbook-page { font-weight: 600; color: #555; }

.pdf-flipbook-viewport {
  position: relative;
  padding: 14px;
  min-height: 520px;
  overflow: hidden;
}

.pdf-flipbook-stage {
  width: 100%;
  display: flex;
  justify-content: center;
  transform: translateX(var(--pf-pan-x, 0px)) scale(var(--pf-zoom, 1));
  transform-origin: top center;
  will-change: transform;
  transition: transform 280ms cubic-bezier(.2, .8, .2, 1);
}

.pdf-flipbook-book {
  margin: 0 auto;
  will-change: transform;
}

.pdf-flipbook.is-zoomed .pdf-flipbook-viewport { overflow: auto; }

@media (prefers-reduced-motion: reduce) {
  .pdf-flipbook-stage,
  .pdf-flipbook-book {
    transition: none !important;
  }
}

.pdf-flipbook-status {
  position: absolute;
  left: 14px;
  bottom: 10px;
}

.pdf-flipbook[data-pf-preparing='1'] .pdf-flipbook-status { font-weight: 600; }
.pdf-flipbook[data-pf-preparing='1'] .pdf-flipbook-status { font-weight: 600; }

.pdf-flipbook-fallback { display: none; padding: 10px 0; }
.pdf-flipbook[data-pf-error='1'] ~ .pdf-flipbook-fallback { display: block; }

.pdf-flipbook .pf-page {
  background: #fff;
}

.pdf-flipbook .pf-canvas {
  width: 100%;
  height: 100%;
  display: block;
  background: #fff;
}

@media (max-width: 575.98px) {
  .pdf-flipbook-viewport { min-height: 420px; padding: 10px; }
}