:root {
  --hp2df--pdf-toolbar-h: 44px;
  --hp2df--pdf-toolbar-bg: #1e1e1e;
  --hp2df--pdf-toolbar-border: #333;
  --hp2df--pdf-toolbar-text: #ccc;
  --hp2df--pdf-toolbar-text-muted: #888;
  --hp2df--pdf-toolbar-btn-hover: #333;
  --hp2df--pdf-toolbar-btn-active: #444;
  --hp2df--pdf-toolbar-input-bg: #2a2a2a;
  --hp2df--pdf-toolbar-input-border: #444;
  --hp2df--pdf-toolbar-input-focus: #5b9bd5;
  --hp2df--pdf-viewer-bg: #525659;
  --hp2df--pdf-overlay-bg: rgba(0, 0, 0, 0.6);
  --hp2df--pdf-spinner-color: #5b9bd5;
  --hp2df--pdf-spinner-border: rgba(255, 255, 255, 0.15);
  --hp2df--pdf-error-box-bg: #fff;
  --hp2df--pdf-error-box-text: #333;
  --hp2df--pdf-error-title-color: #1f2937;
  --hp2df--pdf-error-detail-color: #6b7280;
  --hp2df--pdf-error-icon-color: #ef4444;
  --hp2df--pdf-error-box-shadow: rgba(0, 0, 0, 0.25);
  --hp2df--pdf-popup-bg: #2a2a2a;
  --hp2df--pdf-popup-border: #444;
  --hp2df--pdf-popup-shadow: rgba(0, 0, 0, 0.4);
  --hp2df--pdf-page-shadow: rgba(0, 0, 0, 0.3);
}

:root[data-theme="light"] {
  --hp2df--pdf-toolbar-bg: #f9fafb;
  --hp2df--pdf-toolbar-border: #d1d5db;
  --hp2df--pdf-toolbar-text: #374151;
  --hp2df--pdf-toolbar-text-muted: #9ca3af;
  --hp2df--pdf-toolbar-btn-hover: #e5e7eb;
  --hp2df--pdf-toolbar-btn-active: #d1d5db;
  --hp2df--pdf-toolbar-input-bg: #fff;
  --hp2df--pdf-toolbar-input-border: #d1d5db;
  --hp2df--pdf-toolbar-input-focus: #3b82f6;
  --hp2df--pdf-viewer-bg: #e5e7eb;
  --hp2df--pdf-overlay-bg: rgba(0, 0, 0, 0.4);
  --hp2df--pdf-spinner-color: #3b82f6;
  --hp2df--pdf-spinner-border: rgba(0, 0, 0, 0.1);
  --hp2df--pdf-error-box-bg: #fff;
  --hp2df--pdf-error-box-text: #374151;
  --hp2df--pdf-error-title-color: #111827;
  --hp2df--pdf-error-detail-color: #6b7280;
  --hp2df--pdf-error-icon-color: #ef4444;
  --hp2df--pdf-error-box-shadow: rgba(0, 0, 0, 0.15);
  --hp2df--pdf-popup-bg: #fff;
  --hp2df--pdf-popup-border: #d1d5db;
  --hp2df--pdf-popup-shadow: rgba(0, 0, 0, 0.15);
  --hp2df--pdf-page-shadow: rgba(0, 0, 0, 0.12);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --hp2df--pdf-toolbar-bg: #f9fafb;
    --hp2df--pdf-toolbar-border: #d1d5db;
    --hp2df--pdf-toolbar-text: #374151;
    --hp2df--pdf-toolbar-text-muted: #9ca3af;
    --hp2df--pdf-toolbar-btn-hover: #e5e7eb;
    --hp2df--pdf-toolbar-btn-active: #d1d5db;
    --hp2df--pdf-toolbar-input-bg: #fff;
    --hp2df--pdf-toolbar-input-border: #d1d5db;
    --hp2df--pdf-toolbar-input-focus: #3b82f6;
    --hp2df--pdf-viewer-bg: #e5e7eb;
    --hp2df--pdf-overlay-bg: rgba(0, 0, 0, 0.4);
    --hp2df--pdf-spinner-color: #3b82f6;
    --hp2df--pdf-spinner-border: rgba(0, 0, 0, 0.1);
    --hp2df--pdf-error-box-bg: #fff;
    --hp2df--pdf-error-box-text: #374151;
    --hp2df--pdf-error-title-color: #111827;
    --hp2df--pdf-error-detail-color: #6b7280;
    --hp2df--pdf-error-icon-color: #ef4444;
    --hp2df--pdf-error-box-shadow: rgba(0, 0, 0, 0.15);
    --hp2df--pdf-popup-bg: #fff;
    --hp2df--pdf-popup-border: #d1d5db;
    --hp2df--pdf-popup-shadow: rgba(0, 0, 0, 0.15);
    --hp2df--pdf-page-shadow: rgba(0, 0, 0, 0.12);
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--hp2df--pdf-viewer-bg);
  color: var(--hp2df--pdf-toolbar-text);
  user-select: none;
}

#toolbar {
  position: relative;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--hp2df--pdf-toolbar-h);
  padding: 0 8px;
  background: var(--hp2df--pdf-toolbar-bg);
  border-bottom: 1px solid var(--hp2df--pdf-toolbar-border);
  gap: 4px;
  overflow: hidden;
  flex-wrap: nowrap;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 2px;
}

.toolbar-separator {
  width: 1px;
  height: 24px;
  background: var(--hp2df--pdf-toolbar-border);
  margin: 0 6px;
  flex-shrink: 0;
}

.toolbar-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--hp2df--pdf-toolbar-text);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}

.toolbar-btn:hover { background: var(--hp2df--pdf-toolbar-btn-hover); }
.toolbar-btn:active { background: var(--hp2df--pdf-toolbar-btn-active); }
.toolbar-btn:disabled {
  opacity: 0.35;
  cursor: default;
  pointer-events: none;
}

.toolbar-btn svg { width: 16px; height: 16px; }

.page-nav-group {
  display: flex;
  align-items: center;
  gap: 2px;
}

.page-input {
  width: 44px;
  height: 28px;
  padding: 0 4px;
  border: 1px solid var(--hp2df--pdf-toolbar-input-border);
  border-radius: 4px;
  background: var(--hp2df--pdf-toolbar-input-bg);
  color: var(--hp2df--pdf-toolbar-text);
  font-size: 13px;
  text-align: center;
  outline: none;
  transition: border-color 0.15s;
}

.page-input:focus { border-color: var(--hp2df--pdf-toolbar-input-focus); }

.page-total {
  font-size: 13px;
  color: var(--hp2df--pdf-toolbar-text-muted);
  white-space: nowrap;
  padding: 0 4px;
}

.zoom-display {
  min-width: 52px;
  max-width: 80px;
  font-size: 13px;
  color: var(--hp2df--pdf-toolbar-text);
  text-align: center;
  cursor: pointer;
  padding: 0 4px;
  height: 28px;
  line-height: 28px;
  border-radius: 4px;
  transition: background 0.15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex-shrink: 0;
}

.zoom-display:hover { background: var(--hp2df--pdf-toolbar-btn-hover); }

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 2px;
}

.toolbar-btn-text {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 32px;
  padding: 0 10px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--hp2df--pdf-toolbar-text);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}

.toolbar-btn-text:hover { background: var(--hp2df--pdf-toolbar-btn-hover); }
.toolbar-btn-text:active { background: var(--hp2df--pdf-toolbar-btn-active); }
.toolbar-btn-text svg { width: 14px; height: 14px; }

#outerContainer {
  position: absolute;
  top: var(--hp2df--pdf-toolbar-h);
  left: 0;
  right: 0;
  bottom: 0;
}

#viewerContainer {
  position: absolute;
  inset: 0;
  overflow: auto;
  background: var(--hp2df--pdf-viewer-bg);
}

.pdfViewer .page {
  margin: 8px auto 12px;
  box-shadow: 0 2px 8px var(--hp2df--pdf-page-shadow);
}

.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  background: var(--hp2df--pdf-overlay-bg);
  flex-direction: column;
  gap: 16px;
}

.overlay.hidden { display: none; }

#loadingIndicator {
  color: var(--hp2df--pdf-toolbar-text);
  font-size: 15px;
  text-align: center;
  line-height: 1.5;
}

.spinner {
  width: 36px;
  height: 36px;
  margin: 0 auto;
  border: 3px solid var(--hp2df--pdf-spinner-border);
  border-top-color: var(--hp2df--pdf-spinner-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

#errorOverlay {
  background: var(--hp2df--pdf-overlay-bg);
}

#errorBox {
  background: var(--hp2df--pdf-error-box-bg);
  color: var(--hp2df--pdf-error-box-text);
  padding: 28px 36px;
  border-radius: 10px;
  box-shadow: 0 8px 30px var(--hp2df--pdf-error-box-shadow);
  text-align: center;
  max-width: 420px;
}

#errorBox .error-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  color: var(--hp2df--pdf-error-icon-color);
}

#errorBox .error-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--hp2df--pdf-error-title-color);
}

#errorBox .error-detail {
  font-size: 14px;
  color: var(--hp2df--pdf-error-detail-color);
  line-height: 1.6;
  word-break: break-all;
}

.scale-popup {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 4px;
  background: var(--hp2df--pdf-popup-bg);
  border: 1px solid var(--hp2df--pdf-popup-border);
  border-radius: 6px;
  padding: 4px 0;
  min-width: 100px;
  box-shadow: 0 4px 12px var(--hp2df--pdf-popup-shadow);
  flex-direction: column;
}

.scale-popup.show { display: flex; }

.scale-popup-item {
  padding: 6px 14px;
  font-size: 13px;
  color: var(--hp2df--pdf-toolbar-text);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.1s;
}

.scale-popup-item:hover { background: var(--hp2df--pdf-toolbar-btn-hover); }

.scale-popup-item.active {
  color: var(--hp2df--pdf-toolbar-input-focus);
}

@media (max-width: 500px) {
  .toolbar-btn-text span { display: none; }
  .page-total { display: none; }
  .zoom-display { min-width: 40px; max-width: 56px; font-size: 12px; }
  .toolbar-separator { margin: 0 3px; }
  #toolbar { padding: 0 4px; gap: 2px; }
}

@media (max-width: 360px) {
  .toolbar-btn-text span { display: none; }
  .page-total { display: none; }
  .zoom-display { min-width: 36px; max-width: 48px; font-size: 11px; padding: 0 2px; }
  .toolbar-btn { width: 28px; height: 28px; }
  .toolbar-btn svg { width: 14px; height: 14px; }
  .page-input { width: 36px; font-size: 12px; }
}