.pdf-embed-wrapper .pdf-main-wrapper {
  display: flex;
  justify-content: center;
  background: #ffffff;
  min-height: 80vh;
  width: 100%;
}

.pdf-embed-wrapper .pdf-body-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  background: #fff;
}

.pdf-embed-wrapper .pdf-viewer-column {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #ffffff;
}

.pdf-embed-wrapper .pdf-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 900px;
  background: #343a40;
  color: white;
  padding: 8px 15px;
  border-radius: 4px 4px 0 0;
  flex-wrap: wrap;
  gap: 10px;
}

.pdf-embed-wrapper .toolbar-section {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 8px;
}

.pdf-embed-wrapper .toolbar-section:first-child {
  flex: 1;
  min-width: 150px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pdf-embed-wrapper .canvas-wrapper {
  flex-grow: 1;
  background: #ffffff;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 10px;
  padding: 20px 0;
  overflow: visible;
  position: relative;
  min-height: 460px;
  width: 100%;
  max-width: 900px;
}

.pdf-embed-wrapper .viewer-canvas {
  max-width: 100% !important;
  height: auto !important;
  display: block;
  margin: 0 auto;
  border: 1px solid #ccc;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  background: #fff;
}

.pdf-embed-wrapper .loader-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 20;
}

.pdf-embed-wrapper .spinner {
  width: 50px;
  height: 50px;
  border: 5px solid #f3f3f3;
  border-top: 5px solid #3498db;
  border-radius: 50%;
  animation: pdf-viewer-spin 1s linear infinite;
}

@keyframes pdf-viewer-spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

.pdf-embed-wrapper .side-nav {
  position: static;
  top: auto;
  transform: none;
  align-self: center;
  z-index: 100;
  background: rgba(255, 255, 255, 0.6);
  border: 0;
  color: #333;
  font-size: 2.2rem;
  cursor: pointer;
  padding: 12px 10px;
  transition: all 0.2s ease;
}

.pdf-embed-wrapper .side-nav:hover {
  background: rgba(255, 255, 255, 0.9);
  color: #000;
}

.pdf-embed-wrapper .prev-btn {
  margin-right: 0;
  left: auto;
}

.pdf-embed-wrapper .next-btn {
  margin-left: 0;
  right: auto;
}

.pdf-embed-wrapper .thumbnail-sidebar {
  width: 80%;
  max-width: 1200px;
  margin: 24px auto 18px;
  display: flex;
  flex-direction: row;
  overflow-x: auto;
  overflow-y: hidden;
  background: #ffffff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 14px 12px;
  gap: 14px;
  justify-content: flex-start;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x;
}

.pdf-embed-wrapper .pdf-error {
  display: none;
  width: 100%;
  max-width: 900px;
  margin: 12px auto 0;
  padding: 12px 14px;
  border: 1px solid #f2c2c2;
  background: #fff3f3;
  color: #6e1e1e;
  border-radius: 4px;
  font-size: 0.95rem;
  line-height: 1.4;
}

.pdf-embed-wrapper .pdf-error.is-visible {
  display: block;
}

.pdf-embed-wrapper .thumb-container {
  flex: 0 0 auto;
  width: 110px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
}

.pdf-embed-wrapper .thumb-canvas {
  width: 100%;
  height: auto;
  border: 1px solid #ccc;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  pointer-events: none;
  transition: transform 0.2s;
}

.pdf-embed-wrapper .thumb-container:hover .thumb-canvas {
  transform: scale(1.05);
  border-color: #3498db;
}

.pdf-embed-wrapper .thumb-label {
  font-size: 0.8rem;
  color: #555;
}

.pdf-embed-wrapper .thumb-container.active .thumb-canvas {
  border: 2px solid #3498db;
}

.pdf-embed-wrapper .page-input {
  width: 50px;
  max-width: 55px;
  text-align: left;
  background: #4a4d51;
  color: white;
  border: none;
  border-radius: 1px;
  margin: 0 4px;
  padding: 5px;
  height: 28px;
}

.pdf-embed-wrapper .t-btn {
  background: transparent;
  border: none;
  color: #ddd;
  font-size: 1.2rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  transition: background 0.2s;
}

.pdf-embed-wrapper .t-btn:hover {
  background: #4a4d51;
  color: white;
}

@media (max-width: 768px) {
  .pdf-embed-wrapper .pdf-toolbar {
    width: 100%;
    max-width: 100%;
    border-radius: 0;
  }

  .pdf-embed-wrapper .side-nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1000;
    padding: 10px 8px;
    font-size: 1.8rem;
    background: rgba(255, 255, 255, 0.8);
  }

  .pdf-embed-wrapper .prev-btn {
    left: 10px;
  }

  .pdf-embed-wrapper .next-btn {
    right: 10px;
  }

  .pdf-embed-wrapper .thumbnail-sidebar {
    width: 95%;
  }
}