.guide-reader {
  margin: 2rem 0;
  max-width: 100%;
  min-width: 0;
}

.guide-reader .pdf-viewer-container {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 100%;
  height: min(80vh, calc(100dvh - 14rem));
  min-height: 18rem;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
  background: #f8f9fa;
  position: relative;
}

.guide-reader .pdf-viewer-container.fullscreen {
  position: fixed;
  inset: 0;
  width: auto;
  height: auto;
  max-height: none;
  min-height: 0;
  z-index: 9999;
  border-radius: 0;
  margin: 0;
}

.guide-reader #pdf-viewer {
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  overflow: auto;
  overscroll-behavior: contain;
  scrollbar-width: thick;
  scrollbar-color: #c1c1c1 #f1f1f1;
}

.guide-reader #pdf-viewer::-webkit-scrollbar {
  width: 16px;
}

.guide-reader #pdf-viewer::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 10px;
}

.guide-reader #pdf-viewer::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 10px;
  border: 2px solid #f1f1f1;
}

.guide-reader #pdf-viewer canvas {
  display: block;
  margin: 0 auto 16px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
  border-radius: 10px;
  background: var(--bg);
}

.guide-reader .pdf-viewer-header {
  background: var(--bg);
  padding: 16px 20px;
  border-bottom: 1px solid #e5e7eb;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  position: relative;
  z-index: 10;
  max-width: 100%;
  min-width: 0;
}

.guide-reader .pdf-viewer-title {
  font-size: 18px;
  font-weight: 500;
  color: var(--fg);
  margin: 0;
  min-width: 0;
}

.guide-reader .pdf-viewer-controls-group,
.guide-reader .pdf-viewer-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 100%;
  min-width: 0;
}

.guide-reader .pdf-page-selector {
  display: flex;
  align-items: center;
  gap: 8px;
}

.guide-reader .pdf-page-selector label,
.guide-reader .pdf-page-selector span {
  font-size: 14px;
  color: var(--muted);
  font-weight: 400;
}

.guide-reader .pdf-page-selector input {
  width: 60px;
  max-width: 100%;
  padding: 6px 10px;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  font-size: 14px;
  text-align: center;
  background: var(--bg);
  color: var(--fg);
  -moz-appearance: textfield;
}

.guide-reader .pdf-page-selector input::-webkit-outer-spin-button,
.guide-reader .pdf-page-selector input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.guide-reader .pdf-page-selector input:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.guide-reader a.pdf-viewer-btn,
.guide-reader button.pdf-viewer-btn {
  padding: 8px 16px;
  background: #007bff;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  max-width: 100%;
  font-family: inherit;
  line-height: 1.4;
}

.guide-reader a.pdf-viewer-btn:hover,
.guide-reader button.pdf-viewer-btn:hover {
  background: #0056b3;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.guide-reader a.pdf-viewer-btn.secondary,
.guide-reader button.pdf-viewer-btn.fullscreen-btn {
  background: #6c757d;
}

.guide-reader a.pdf-viewer-btn.secondary:hover,
.guide-reader button.pdf-viewer-btn.fullscreen-btn:hover {
  background: #5a6268;
  box-shadow: none;
}

.guide-reader button.pdf-viewer-btn.fullscreen-btn.active,
.guide-reader button.pdf-viewer-btn.fullscreen-btn.active:hover {
  background: #007bff;
}

.guide-reader .pdf-loading,
.guide-reader .pdf-error {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--muted);
  font-size: 16px;
  padding: 20px;
  text-align: center;
}

.guide-reader .pdf-error {
  flex-direction: column;
  color: var(--fg);
}

.guide-reader .pdf-error h2 {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 500;
  color: var(--fg);
}

.guide-reader .pdf-error p {
  margin: 0;
  color: var(--muted);
}

.guide-reader .pdf-status {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}