/* ==================================================================
   PDF VIEWER - Viewer personnalisé avec mode double-page
   ================================================================== */

.lb-pdf-viewer {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #2d2d2d;
  display: flex;
  flex-direction: column;
  z-index: 9999;
}

/* Header avec contrôles */
.lb-pdf-viewer__header {
  background: #1a1a1a;
  border-bottom: 1px solid #3a3a3a;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.lb-pdf-viewer__title {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}

.lb-pdf-viewer__back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: 1px solid #4a4a4a;
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.9375rem;
  font-weight: 500;
  white-space: nowrap;
}

.lb-pdf-viewer__back:hover {
  background: #3a3a3a;
  border-color: #5a5a5a;
}

.lb-pdf-viewer__filename {
  font-size: 1.125rem;
  font-weight: 600;
  color: #fff;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lb-pdf-viewer__controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.lb-pdf-viewer__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #2d2d2d;
  border: 1px solid #4a4a4a;
  color: #fff;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
}

.lb-pdf-viewer__btn:hover:not(:disabled) {
  background: #3a3a3a;
  border-color: #5a5a5a;
}

.lb-pdf-viewer__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.lb-pdf-viewer__btn--icon-only {
  padding: 0.5rem;
}

.lb-pdf-viewer__btn--download {
  background: #2563eb;
  border-color: #2563eb;
  color: white;
  text-decoration: none;
}

.lb-pdf-viewer__btn--download:hover {
  background: #1d4ed8;
  border-color: #1d4ed8;
}

.lb-pdf-viewer__page-info {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0 0.25rem;
}

.lb-pdf-viewer__zoom-level {
  color: #fff;
  font-size: 0.875rem;
  font-weight: 500;
  min-width: 3rem;
  text-align: center;
}

.lb-pdf-viewer__divider {
  width: 1px;
  height: 1.5rem;
  background: #4a4a4a;
}

/* Container du PDF */
.lb-pdf-viewer__container {
  flex: 1;
  overflow: auto;
  display: flex;
  justify-content: center;
  padding: 2rem;
  position: relative;
}

.lb-pdf-viewer__pages {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

/* Mode double-page */
.lb-pdf-viewer__container.spread-mode .lb-pdf-viewer__pages {
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.lb-pdf-viewer__page-wrapper {
  position: relative;
  background: white;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

/* Spread mode - deux pages côte à côte */
.lb-pdf-viewer__container.spread-mode .lb-pdf-viewer__spread {
  display: flex;
  gap: 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.lb-pdf-viewer__container.spread-mode .lb-pdf-viewer__page-wrapper {
  box-shadow: none;
}

.lb-pdf-viewer__page-canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Loading */
.lb-pdf-viewer__loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  color: #fff;
  z-index: 10;
}

.lb-pdf-viewer__loading p {
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
}

.lb-pdf-viewer__spinner {
  width: 48px;
  height: 48px;
  border: 4px solid #4a4a4a;
  border-top-color: #2563eb;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Error */
.lb-pdf-viewer__error {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  color: #fff;
  text-align: center;
  max-width: 500px;
  padding: 2rem;
}

.lb-pdf-viewer__error svg {
  color: #ef4444;
}

.lb-pdf-viewer__error h2 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
}

.lb-pdf-viewer__error p {
  margin: 0;
  font-size: 1rem;
  color: #9ca3af;
}

/* Responsive */
@media (max-width: 768px) {
  .lb-pdf-viewer__header {
    padding: 0.75rem 1rem;
  }

  .lb-pdf-viewer__filename {
    font-size: 1rem;
  }

  .lb-pdf-viewer__controls {
    gap: 0.5rem;
  }

  .lb-pdf-viewer__btn span {
    display: none;
  }

  .lb-pdf-viewer__btn {
    padding: 0.5rem;
  }

  .lb-pdf-viewer__container {
    padding: 1rem;
  }

  .lb-pdf-viewer__container.spread-mode .lb-pdf-viewer__spread {
    gap: 0;
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .lb-pdf-viewer__back span {
    display: none;
  }

  .lb-pdf-viewer__back {
    padding: 0.5rem;
  }

  .lb-pdf-viewer__divider {
    display: none;
  }

  .lb-pdf-viewer__zoom-level {
    display: none;
  }
}

/* Fullscreen */
.lb-pdf-viewer:fullscreen {
  background: #1a1a1a;
}

.lb-pdf-viewer:-webkit-full-screen {
  background: #1a1a1a;
}

.lb-pdf-viewer:-moz-full-screen {
  background: #1a1a1a;
}

.lb-pdf-viewer:-ms-fullscreen {
  background: #1a1a1a;
}