.libro-wrap {
  max-width: 1300px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
  text-align: center;
}

.libro-title {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color, #1a2f4a);
  margin-bottom: .35rem;
}

.libro-loading {
  padding: 4rem 1rem;
  color: var(--text-light, #4b5563);
  font-size: 1.05rem;
}

.libro-loading .spinner {
  width: 42px;
  height: 42px;
  border: 4px solid var(--border-color, #e5dfd3);
  border-top-color: var(--primary-color, #1a2f4a);
  border-radius: 50%;
  margin: 0 auto 1.25rem;
  animation: libro-spin 1s linear infinite;
}

@keyframes libro-spin {
  to { transform: rotate(360deg); }
}

.libro-zoom-wrapper {
  position: relative;
  overflow: hidden;
  touch-action: none;
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--light-gray, #f3ede3);
  padding: 1rem;
  border-radius: 12px;
  box-shadow: var(--shadow-lg, 0 10px 30px rgba(0, 0, 0, .15));
  min-height: 320px;
}

.libro-book {
  max-width: 100%;
  transform-origin: center center;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  will-change: transform;
}

.libro-book .my-page {
  background: #fff;
  overflow: hidden;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.libro-book .my-page img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: #fff;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.libro-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}

.libro-controls button {
  background: var(--primary-color, #1a2f4a);
  color: #fff;
  border: none;
  width: 46px;
  height: 46px;
  min-width: 46px;
  flex-shrink: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  font-size: 1.1rem;
  cursor: pointer;
  transition: background .2s ease;
}

@media (max-width: 480px) {
  .libro-controls {
    gap: .6rem;
  }
  .libro-controls button {
    width: 38px;
    height: 38px;
    min-width: 38px;
    font-size: .95rem;
  }
}

.libro-controls button:hover {
  background: var(--secondary-color, #c9a961);
  color: #1a2f4a;
}

.libro-controls button:disabled {
  opacity: .4;
  cursor: not-allowed;
}

.libro-controls .libro-page-indicator {
  font-weight: 500;
  color: var(--text-dark, #1f2937);
  min-width: 90px;
}

#libro-viewer-root:fullscreen,
#libro-viewer-root:-webkit-full-screen {
  background: #1a2f4a;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  max-width: none;
}

#libro-viewer-root:fullscreen .libro-title,
#libro-viewer-root:-webkit-full-screen .libro-title {
  display: none;
}

#libro-viewer-root:fullscreen .libro-zoom-wrapper,
#libro-viewer-root:-webkit-full-screen .libro-zoom-wrapper {
  flex: 1;
  width: 100%;
  background: transparent;
  box-shadow: none;
}