.lds-pdf-viewer {
  position: relative;
  width: 100%;
  max-width: 1100px;
  margin: 1.25rem auto;
  background: #262a2f;
  border: 1px solid rgba(0,0,0,.12);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 10px 35px rgba(0,0,0,.12);
  -webkit-user-select: none;
  user-select: none;
}

.lds-pdf-toolbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .7rem 1rem;
  background: rgba(22,25,29,.96);
  color: #fff;
  font-size: .9rem;
  backdrop-filter: blur(10px);
}

.lds-pdf-pages {
  padding: 18px 10px 26px;
}

.lds-pdf-page {
  position: relative;
  width: min(100%, 980px);
  min-height: 320px;
  margin: 0 auto 18px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 4px 18px rgba(0,0,0,.24);
}

.lds-pdf-page img {
  display: block;
  width: 100%;
  height: auto;
  opacity: 0;
  pointer-events: none;
  -webkit-user-drag: none;
  transition: opacity .18s ease;
}

.lds-pdf-page img.is-loaded { opacity: 1; }

.lds-pdf-loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  color: #555;
  background: #f5f5f5;
  font-size: .95rem;
}

.lds-pdf-watermark {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(25,25,25,.12);
  font-weight: 700;
  font-size: clamp(20px, 5vw, 54px);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: .06em;
  transform: rotate(-28deg) scale(1.1);
  pointer-events: none;
  white-space: nowrap;
}

.lds-pdf-fallback iframe {
  display: block;
  width: 100%;
  height: 800px;
  min-height: inherit;
  border: 0;
  background: #fff;
}

.lds-pdf-watermark-fallback {
  z-index: 10;
  position: absolute;
  top: 54px;
  bottom: 0;
}

.lds-pdf-message {
  padding: 14px 16px;
  border: 1px solid #ddd;
  border-radius: 8px;
  background: #fafafa;
}

@media (max-width: 640px) {
  .lds-pdf-viewer { border-radius: 6px; }
  .lds-pdf-pages { padding: 8px 4px 14px; }
  .lds-pdf-page { margin-bottom: 8px; min-height: 220px; }
  .lds-pdf-toolbar { font-size: .78rem; padding: .55rem .65rem; }
  .lds-pdf-fallback iframe { height: 70vh; }
}