.mvpdf-viewer,
.mvpdf-viewer * {
  box-sizing: border-box;
}

.mvpdf-viewer {
  --mvpdf-ink: #171717;
  --mvpdf-paper: #fff;
  width: 100%;
  margin: 0 auto;
}

.mvpdf-stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 320px;
  padding: 24px 58px 48px;
  overflow: hidden;
}

.mvpdf-loading {
  color: #555;
  font: 14px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.mvpdf-loading.mvpdf-error {
  color: #a12622;
}

.mvpdf-book {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  width: min(100%, 1500px);
  max-height: 82vh;
  perspective: 2200px;
  filter: drop-shadow(0 18px 28px rgba(0, 0, 0, 0.16));
}

.mvpdf-page {
  position: relative;
  display: flex;
  justify-content: center;
  min-width: 0;
  overflow: hidden;
  background: var(--mvpdf-paper);
  transform-style: preserve-3d;
  backface-visibility: hidden;
}

.mvpdf-page-left {
  justify-content: flex-end;
  border-radius: 3px 0 0 3px;
  transform-origin: right center;
  box-shadow: inset -12px 0 18px -18px rgba(0, 0, 0, 0.75);
}

.mvpdf-page-right {
  justify-content: flex-start;
  border-radius: 0 3px 3px 0;
  transform-origin: left center;
  box-shadow: inset 12px 0 18px -18px rgba(0, 0, 0, 0.75);
}

.mvpdf-page canvas {
  display: block;
  max-width: 100%;
  height: auto;
  background: var(--mvpdf-paper);
}

.mvpdf-page.mvpdf-empty {
  align-self: stretch;
  min-height: 260px;
  background: transparent;
  box-shadow: none;
}

.mvpdf-turn-next .mvpdf-page-right {
  animation: mvpdf-turn-next 470ms ease-in-out both;
}

.mvpdf-turn-prev .mvpdf-page-left {
  animation: mvpdf-turn-prev 470ms ease-in-out both;
}

@keyframes mvpdf-turn-next {
  0% { transform: rotateY(0deg); filter: brightness(1); }
  50% { transform: rotateY(-90deg); filter: brightness(.82); }
  51% { transform: rotateY(90deg); filter: brightness(.88); }
  100% { transform: rotateY(0deg); filter: brightness(1); }
}

@keyframes mvpdf-turn-prev {
  0% { transform: rotateY(0deg); filter: brightness(1); }
  50% { transform: rotateY(90deg); filter: brightness(.82); }
  51% { transform: rotateY(-90deg); filter: brightness(.88); }
  100% { transform: rotateY(0deg); filter: brightness(1); }
}

.mvpdf-arrow,
.mvpdf-download {
  position: absolute;
  display: grid;
  place-items: center;
  padding: 0;
  color: var(--mvpdf-ink);
  background: rgba(255, 255, 255, 0.9);
  border: 0;
  border-radius: 50%;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.12);
  cursor: pointer;
  transition: opacity 160ms ease, transform 160ms ease, background 160ms ease;
  z-index: 5;
}

.mvpdf-arrow {
  top: 50%;
  width: 38px;
  height: 38px;
  transform: translateY(-50%);
}

.mvpdf-prev { left: 10px; }
.mvpdf-next { right: 10px; }

.mvpdf-arrow:hover:not(:disabled),
.mvpdf-download:hover {
  background: #fff;
}

.mvpdf-arrow:hover:not(:disabled) {
  transform: translateY(-50%) scale(1.06);
}

.mvpdf-arrow:disabled {
  opacity: 0;
  pointer-events: none;
}

.mvpdf-arrow svg,
.mvpdf-download svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.mvpdf-download {
  right: 12px;
  bottom: 8px;
  width: 31px;
  height: 31px;
  text-decoration: none;
}

.mvpdf-download svg {
  width: 17px;
  height: 17px;
}

.mvpdf-arrow:focus-visible,
.mvpdf-download:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

.mvpdf-notice {
  padding: 12px 14px;
  border-left: 3px solid #dba617;
  background: #fff8dd;
}

@media (max-width: 680px) {
  .mvpdf-stage {
    min-height: 220px;
    padding: 16px 38px 42px;
  }

  .mvpdf-arrow {
    width: 32px;
    height: 32px;
  }

  .mvpdf-prev { left: 2px; }
  .mvpdf-next { right: 2px; }

  .mvpdf-arrow svg {
    width: 17px;
    height: 17px;
  }

  .mvpdf-download {
    right: 4px;
    bottom: 5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mvpdf-turn-next .mvpdf-page-right,
  .mvpdf-turn-prev .mvpdf-page-left {
    animation: none;
  }
}