:root {
  color-scheme: light dark;

  /* Background colors */
  --bg000: light-dark(#ffffff, #1a1a1a);
  --bg100: light-dark(#f5f5f5, #252525);
  --bg200: light-dark(#e0e0e0, #333333);
  --bg300: light-dark(#cccccc, #444444);

  /* Text colors */
  --text000: light-dark(#1a1a1a, #f0f0f0);
  --text100: light-dark(#666666, #aaaaaa);
  --text200: light-dark(#999999, #888888);

  /* Shadows */
  --shadow-page-color: light-dark(rgba(0 0 0 / 0.15), rgba(0 0 0 / 0.4));
  --selection-bg: light-dark(rgba(0, 0, 255, 0.3), rgba(100, 150, 255, 0.4));
}

body {
  overscroll-behavior-x: none;
  display: flex;
}

.main {
  display: flex;
  flex-direction: column;
  flex: 1;
  width: 100%;
  background: var(--bg100);
  color: var(--text000);
  overflow: hidden; /* Prevent scrollbars in inline mode - we request exact size */
  border-radius: 0.75rem;
  border: 1px solid var(--bg200);
}

/* Loading State */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 0.75rem;
  padding: 2rem;
}

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--bg200);
  border-top-color: var(--text100);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

#loading-text {
  font-size: 0.8rem;
  color: var(--text100);
}

/* Error State */
.error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 1rem;
  padding: 2rem;
  text-align: center;
}

.error-icon {
  font-size: 3rem;
}

#error-message {
  color: var(--text200);
  max-width: 400px;
}

/* Viewer Container */
.viewer {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: visible;
  position: relative;
}

/* Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.5rem;
  background: var(--bg000);
  border-bottom: 1px solid var(--bg200);
  flex-shrink: 0;
  gap: 0.25rem 0.5rem;
  min-height: 48px;
  box-sizing: border-box;
  flex-wrap: wrap;
}

.toolbar-left {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.pdf-title {
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.9rem;
  display: block;
  max-width: 100%;
}

.toolbar-center {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-shrink: 0;
}

/* Page Navigation */
.page-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.page-input {
  width: 50px;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--bg200);
  border-radius: 4px;
  font-size: 0.85rem;
  text-align: center;
  background: var(--bg000);
  color: var(--text000);
}

.page-input:focus {
  outline: none;
  border-color: var(--text100);
}

.page-input::-webkit-outer-spin-button,
.page-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.page-input[type="number"] {
  -moz-appearance: textfield;
}

.total-pages {
  font-size: 0.85rem;
  color: var(--text100);
  white-space: nowrap;
}

.nav-btn,
.zoom-btn,
.fullscreen-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--bg200);
  border-radius: 4px;
  background: var(--bg000);
  color: var(--text000);
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.15s ease;
}

.nav-btn:hover:not(:disabled),
.zoom-btn:hover:not(:disabled),
.fullscreen-btn:hover {
  background: var(--bg100);
  border-color: var(--bg300);
}

.nav-btn:disabled,
.zoom-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.zoom-level {
  font-size: 0.8rem;
  color: var(--text100);
  min-width: 50px;
  text-align: center;
}

/* Single Page Canvas Container */
.canvas-container {
  flex: 1;
  overflow-x: auto; /* Allow horizontal scrolling when zoomed in inline mode */
  overflow-y: visible;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 1rem;
  background: var(--bg200);
  /* JS owns pinch (inline pinch-in → fullscreen). pan-x/pan-y keeps native
   * scrolling; the fullscreen rule below repeats this with a comment on the
   * iOS-Safari preventDefault backstop. */
  touch-action: pan-x pan-y;
}

.page-wrapper {
  position: relative;
  box-shadow:
    0 1px 4px var(--shadow-page-color),
    0 4px 16px var(--shadow-page-color);
  background: white;
}

#pdf-canvas {
  display: block;
}

/* Text Layer for Selection
 * Critical: must include font-size and transform rules that PDF.js TextLayer
 * relies on via CSS custom properties (--font-height, --scale-x, --rotate).
 * Without these, text layer spans won't align with the canvas rendering. */
.text-layer {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  opacity: 0.2;
  line-height: 1;
  text-size-adjust: none;
  forced-color-adjust: none;
  transform-origin: 0 0;
  z-index: 2;
  /* PDF.js TextLayer sets --min-font-size on container */
  --min-font-size-inv: calc(1 / var(--min-font-size, 1));
}

.text-layer :is(span, br) {
  color: transparent;
  position: absolute;
  white-space: pre;
  cursor: text;
  transform-origin: 0% 0%;
}

/* PDF.js sets --font-height, --scale-x, --rotate as inline styles on each span.
 * These rules apply proper font size and transforms to match the canvas. */
.text-layer > :not(.markedContent),
.text-layer .markedContent span:not(.markedContent) {
  z-index: 1;
  --font-height: 0;
  font-size: calc(var(--scale-factor, 1) * var(--font-height));
  --scale-x: 1;
  --rotate: 0deg;
  transform: rotate(var(--rotate)) scaleX(var(--scale-x))
    scale(var(--min-font-size-inv, 1));
}

.text-layer .markedContent {
  display: contents;
}

.text-layer ::selection {
  background: var(--selection-bg);
}

.text-layer > span {
  pointer-events: all;
}

/* Fullscreen mode */
.main.fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  overflow: hidden; /* No scrolling on main - only canvas-container scrolls */
  border-radius: 0;
  border: none;
  padding: 0 !important; /* Background extends edge-to-edge */
}

.main.fullscreen .toolbar {
  /* Hosts wrap fullscreen in their own header (title + close), which already
   * clears the top safe-area — so no --safe-top here, only sides. */
  padding: 0.25rem calc(0.5rem + var(--safe-right, 0px)) 0.25rem
    calc(0.5rem + var(--safe-left, 0px));
  min-height: 40px;
  /* Inline can wrap (narrow chat bubble); fullscreen has the width, and
   * wrapping would double the bar height + desync the search-bar offset. */
  flex-wrap: nowrap;
}

.main.fullscreen .search-bar {
  /* -1px overlaps the toolbar border so the dropdown looks attached. */
  top: 39px;
  right: calc(var(--safe-right, 0px) - 1px);
}

.main.fullscreen .viewer {
  min-height: 0; /* Allow flex item to shrink below content size */
}

.main.fullscreen .viewer-body {
  min-height: 0;
}

.main.fullscreen .canvas-container {
  min-height: 0; /* Allow flex item to shrink below content size */
  overflow: auto; /* Scroll within the document area only */
  /* Let JS own pinch-zoom (we re-render the PDF, not the viewport).
   * pan-x pan-y keeps native scrolling/panning working. iOS Safari only
   * partially honours this — preventDefault on touchmove backs it up. */
  touch-action: pan-x pan-y;
  /* Keep the page clear of host overlays (chat input, home indicator).
   * computeFitScale subtracts padding, so fit-to-page lands above these.
   * The container background still extends edge-to-edge (.main.fullscreen
   * has padding:0). Top inset is on the toolbar; the rest land here. */
  padding-bottom: calc(1rem + var(--safe-bottom, 0px));
  padding-left: calc(1rem + var(--safe-left, 0px));
  padding-right: calc(1rem + var(--safe-right, 0px));
}

/* Search Button */
.search-btn,
.nav-btn,
.zoom-btn,
.fullscreen-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--bg200);
  border-radius: 4px;
  background: var(--bg000);
  color: var(--text000);
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.15s ease;
}

.search-btn:hover,
.nav-btn:hover:not(:disabled),
.zoom-btn:hover:not(:disabled),
.fullscreen-btn:hover {
  background: var(--bg100);
  border-color: var(--bg300);
}

/* Search Bar */
.search-bar {
  display: flex;
  align-items: center;
  position: absolute;
  top: 47px; /* below toolbar (48px - 1px border overlap) */
  right: -1px; /* align with outer border */
  padding: 0.375rem 0.5rem;
  background: var(--bg000);
  border: 1px solid var(--bg200);
  border-top: none;
  border-radius: 0 0 6px 6px;
  gap: 0.5rem;
  z-index: 10;
}

.search-input {
  width: 200px;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--bg200);
  border-radius: 4px;
  font-size: 0.85rem;
  background: var(--bg000);
  color: var(--text000);
}

.search-input:focus {
  outline: none;
  border-color: var(--text100);
}

.search-match-count {
  font-size: 0.8rem;
  color: var(--text100);
  white-space: nowrap;
  min-width: 60px;
}

.search-nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--bg200);
  border-radius: 4px;
  background: var(--bg000);
  color: var(--text000);
  cursor: pointer;
  font-size: 0.8rem;
  transition: all 0.15s ease;
}

.search-nav-btn:hover:not(:disabled) {
  background: var(--bg100);
  border-color: var(--bg300);
}

.search-nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Annotation Layer */
.annotation-layer {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 3; /* above text-layer (z-index: 2) so notes are clickable */
}

.annotation-highlight {
  position: absolute;
  background: rgba(255, 255, 0, 0.35);
  mix-blend-mode: multiply;
  border-radius: 1px;
  pointer-events: auto;
  cursor: pointer;
}

.annotation-underline {
  position: absolute;
  border-bottom: 2px solid #ff0000;
  box-sizing: border-box;
  pointer-events: auto;
  cursor: pointer;
}

.annotation-strikethrough {
  position: absolute;
  box-sizing: border-box;
  pointer-events: auto;
  cursor: pointer;
}
.annotation-strikethrough::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  border-top: 2px solid #ff0000;
}

.annotation-note {
  position: absolute;
  width: 20px;
  height: 20px;
  cursor: pointer;
  pointer-events: auto;
}
.annotation-note::after {
  content: "";
  display: block;
  width: 16px;
  height: 16px;
  margin: 2px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='black'%3E%3Cpath d='M3 1a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h10a1 1 0 0 0 1-1V5l-4-4H3zm7 1.5L13.5 6H11a1 1 0 0 1-1-1V2.5zM5 8.5h6v1H5v-1zm0 2.5h4v1H5v-1z'/%3E%3C/svg%3E") no-repeat center / contain;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='black'%3E%3Cpath d='M3 1a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h10a1 1 0 0 0 1-1V5l-4-4H3zm7 1.5L13.5 6H11a1 1 0 0 1-1-1V2.5zM5 8.5h6v1H5v-1zm0 2.5h4v1H5v-1z'/%3E%3C/svg%3E") no-repeat center / contain;
}
.annotation-note .annotation-tooltip {
  display: none;
  position: absolute;
  bottom: 100%;
  left: 0;
  background: var(--bg000, #fff);
  color: var(--text000, #000);
  border: 1px solid var(--bg200, #ccc);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 0.8rem;
  white-space: pre-wrap;
  max-width: 200px;
  z-index: 100; /* Must float above all sibling annotation elements */
  pointer-events: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}
.annotation-note:hover .annotation-tooltip {
  display: block;
}

/* When hovering a note, raise the entire annotation layer above the form
   layer so the tooltip isn't clipped by the z-index:4 form overlay. */
.annotation-layer:has(.annotation-note:hover) {
  z-index: 5;
}

.annotation-rectangle {
  position: absolute;
  border: 2px solid #0066cc;
  box-sizing: border-box;
  pointer-events: auto;
  cursor: grab;
  user-select: none;
}

.annotation-circle {
  position: absolute;
  border: 2px solid #0066cc;
  border-radius: 50%;
  box-sizing: border-box;
  pointer-events: auto;
  cursor: grab;
  user-select: none;
}

.annotation-line {
  position: absolute;
  height: 0;
  border-top: 2px solid #333;
  pointer-events: auto;
  cursor: grab;
  user-select: none;
}

.annotation-freetext {
  position: absolute;
  font-family: Helvetica, Arial, sans-serif;
  white-space: pre-wrap;
  pointer-events: auto;
  cursor: grab;
  user-select: none;
}

.annotation-stamp {
  position: absolute;
  font-family: Helvetica, Arial, sans-serif;
  font-weight: bold;
  font-size: 24px;
  border: 3px solid currentColor;
  padding: 4px 12px;
  opacity: 0.6;
  text-transform: uppercase;
  white-space: nowrap;
  pointer-events: auto;
  cursor: grab;
  user-select: none;
}

.annotation-image {
  position: absolute;
  pointer-events: auto;
  cursor: grab;
  user-select: none;
}

/* Annotation imported verbatim from the PDF (Stamp/Ink/etc. via
 * annotationCanvasMap). The body is the rasterized appearance canvas;
 * if pdf.js didn't divert it (no hasOwnCanvas), the box stays transparent
 * over the main-canvas pixel and just captures clicks. */
.annotation-imported {
  position: absolute;
  pointer-events: auto;
  cursor: grab;
  user-select: none;
}
.annotation-imported:hover {
  outline: 1px dashed var(--accent, #2563eb);
  outline-offset: 1px;
}

/* Selection visuals */
.annotation-selected {
  outline: 2px solid var(--accent, #2563eb);
  outline-offset: 2px;
  z-index: 10;
}

.annotation-handle {
  position: absolute;
  width: 8px;
  height: 8px;
  background: white;
  border: 2px solid var(--accent, #2563eb);
  border-radius: 50%;
  z-index: 11;
  pointer-events: auto;
}
.annotation-handle.nw { top: -5px; left: -5px; cursor: nwse-resize; }
.annotation-handle.ne { top: -5px; right: -5px; cursor: nesw-resize; }
.annotation-handle.sw { bottom: -5px; left: -5px; cursor: nesw-resize; }
.annotation-handle.se { bottom: -5px; right: -5px; cursor: nwse-resize; }

.annotation-handle-rotate {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 10px;
  height: 10px;
  background: white;
  border: 2px solid var(--accent, #2563eb);
  border-radius: 50%;
  z-index: 11;
  pointer-events: auto;
  cursor: grab;
}

.annotation-card.selected {
  background: var(--accent-bg, rgba(37, 99, 235, 0.08));
  border-left-color: var(--accent, #2563eb);
}

.annotation-dragging {
  cursor: grabbing !important;
}

@media (prefers-color-scheme: dark) {
  .annotation-highlight {
    background: rgba(255, 255, 0, 0.3);
    mix-blend-mode: screen;
  }
}

/* Save / Download Buttons */
.save-btn,
.download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--bg200);
  border-radius: 4px;
  background: var(--bg000);
  color: var(--text000);
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.15s ease;
}

.save-btn:hover:not(:disabled),
.download-btn:hover:not(:disabled) {
  background: var(--bg100);
  border-color: var(--bg300);
}

.save-btn:disabled,
.download-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/*
 * Confirmation Dialog
 *
 * Styled to match the host's native dialogs (e.g. the downloadFile prompt).
 * Uses host-provided CSS variables (set via applyHostStyleVariables) with
 * local fallbacks so it still looks reasonable in standalone dev.
 */
.confirm-dialog {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: light-dark(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.6));
  font-family: var(--font-sans, inherit);
}

.confirm-box {
  background: var(--color-background-primary, var(--bg000));
  border-radius: var(--border-radius-xl, 20px);
  padding: 1.75rem;
  min-width: 360px;
  max-width: 520px;
  box-shadow: var(--shadow-lg, 0 20px 50px rgba(0, 0, 0, 0.3));
}

.confirm-title {
  font-weight: var(--font-weight-bold, 700);
  font-size: var(--font-heading-md-size, 1.5rem);
  line-height: var(--font-heading-md-line-height, 1.25);
  margin-bottom: 0.5rem;
  color: var(--color-text-primary, var(--text000));
}

.confirm-body {
  font-size: var(--font-text-md-size, 1rem);
  line-height: var(--font-text-md-line-height, 1.5);
  color: var(--color-text-secondary, var(--text100));
  margin-bottom: 1.5rem;
  word-break: break-word;
}

/* Optional monospace detail box (filename, path, etc.) */
.confirm-detail {
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: var(--font-text-sm-size, 0.9rem);
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  border: var(--border-width-regular, 1px) solid
    var(--color-border-secondary, var(--bg200));
  border-radius: var(--border-radius-md, 8px);
  background: var(--color-background-secondary, var(--bg100));
  color: var(--color-text-primary, var(--text000));
  word-break: break-all;
}

.confirm-detail:empty {
  display: none;
}

.confirm-buttons {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
}

.confirm-btn {
  padding: 0.625rem 1.25rem;
  border: var(--border-width-regular, 1px) solid
    var(--color-border-primary, var(--bg200));
  border-radius: var(--border-radius-md, 8px);
  background: var(--color-background-primary, var(--bg000));
  color: var(--color-text-primary, var(--text000));
  cursor: pointer;
  font: inherit;
  font-size: var(--font-text-md-size, 0.95rem);
  font-weight: var(--font-weight-medium, 500);
}

.confirm-btn:hover {
  background: var(--color-background-secondary, var(--bg100));
}

.confirm-btn-primary {
  /* Host's native primary buttons use inverse colors (dark bg, light text) */
  background: var(--color-background-inverse, var(--text000));
  border-color: var(--color-background-inverse, var(--text000));
  color: var(--color-text-inverse, var(--bg000));
}

.confirm-btn-primary:hover {
  /* .confirm-btn:hover above would otherwise reset background */
  background: var(--color-background-inverse, var(--text000));
  filter: brightness(1.15);
}

/* Form Layer (PDF.js AnnotationLayer for interactive form widgets) */
#form-layer {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 4; /* above annotation-layer (z-index: 3) so form inputs are clickable */
}

/*
 * PDF.js AnnotationLayer renders interactive form inputs on top of the canvas.
 * When the widget is transparent the canvas's static appearance bleeds through,
 * causing double-text (the widget font never matches the PDF's font metrics).
 * Fix: force widgets opaque. PDF.js also reads the annotation's /BC entry and
 * writes it as an inline `background-color` on the element (typically
 * `transparent` for unstyled forms) — inline style beats any selector, hence
 * !important.
 */
#form-layer .textWidgetAnnotation :is(input, textarea),
#form-layer .choiceWidgetAnnotation select {
  background-image: none !important;
  background-color: light-dark(#fff, #2a2a2a) !important;
}

#form-layer select option:checked {
  background: light-dark(#d0e0ff, #335);
}


/* Highlight Layer */
.highlight-layer {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 1;
}

.search-highlight {
  background: rgba(255, 255, 0, 0.4);
  mix-blend-mode: multiply;
  border-radius: 2px;
  pointer-events: none;
}

.search-highlight.current {
  background: rgba(255, 165, 0, 0.6);
}

@media (prefers-color-scheme: dark) {
  .search-highlight {
    background: rgba(255, 255, 0, 0.3);
    mix-blend-mode: screen;
  }

  .search-highlight.current {
    background: rgba(255, 165, 0, 0.5);
    mix-blend-mode: screen;
  }
}

/* Viewer Body (flex row for canvas + panel) */
.viewer-body {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: visible;
  position: relative; /* Anchor for floating annotation panel */
}

/* Annotations Toolbar Button */
.annotations-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--bg200);
  border-radius: 4px;
  background: var(--bg000);
  color: var(--text000);
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.15s ease;
  position: relative;
}
.annotations-btn:hover {
  background: var(--bg100);
  border-color: var(--bg300);
}
.annotations-btn.active {
  background: var(--bg200);
  border-color: var(--bg300);
}

.annotations-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 16px;
  height: 16px;
  background: var(--accent, #2563eb);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 600;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 3px;
  line-height: 1;
}

/* Annotation Side Panel */
.annotation-panel {
  width: 500px;
  min-width: 180px;
  max-width: 50vw;
  background: var(--bg000);
  border-left: 1px solid var(--bg200);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

/* Resize handle on left edge */
.annotation-panel-resize {
  position: absolute;
  left: -3px;
  top: 0;
  bottom: 0;
  width: 6px;
  cursor: col-resize;
  z-index: 10;
}
.annotation-panel-resize:hover,
.annotation-panel-resize.dragging {
  background: var(--text100);
  opacity: 0.3;
}

.annotation-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--bg200);
  flex-shrink: 0;
}

.annotation-panel-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text000);
}

.annotation-panel-header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.annotation-panel-reset,
.annotation-panel-clear-all {
  border: none;
  background: transparent;
  color: var(--text100);
  cursor: pointer;
  border-radius: 4px;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.annotation-panel-reset:hover {
  color: var(--text000);
  background: var(--bg100);
}
.annotation-panel-clear-all:hover {
  color: #e74c3c;
  background: var(--bg100);
}
.annotation-panel-reset:disabled,
.annotation-panel-clear-all:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.annotation-panel-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--text100);
  cursor: pointer;
  font-size: 0.8rem;
  transition: all 0.15s ease;
}
.annotation-panel-close:hover {
  background: var(--bg100);
  color: var(--text000);
}

.annotation-panel-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.25rem 0;
}

/* Floating annotation panel (used in both inline and fullscreen) */
.annotation-panel.floating {
  position: absolute;
  z-index: 20;
  border: 1px solid var(--bg200);
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  max-height: 60%;
  width: 135px;
  transition: top 0.15s ease, left 0.15s ease, right 0.15s ease, bottom 0.15s ease;
}
.annotation-panel.floating .annotation-panel-header {
  cursor: grab;
}
.annotation-panel.floating.dragging .annotation-panel-header {
  cursor: grabbing;
}

/* Accordion section headers */
.annotation-section-header {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text100);
  padding: 0.3rem 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--bg200);
  user-select: none;
  transition: background 0.1s ease;
}
.annotation-section-header:hover {
  background: var(--bg100);
}
.annotation-section-header.current-page {
  color: var(--text000);
}
.annotation-section-header.open {
  color: var(--text000);
}
.annotation-section-chevron {
  font-size: 0.55rem;
  transition: transform 0.15s ease;
}
.annotation-section-body {
  display: none;
}
.annotation-section-body.open {
  display: block;
}

/* Legacy page group headers (fullscreen mode) */
.annotation-page-group {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text100);
  padding: 0.5rem 0.75rem 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.annotation-page-group.current-page {
  color: var(--text000);
}

/* Annotation cards */
.annotation-card {
  display: flex;
  flex-direction: column;
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  transition: background 0.1s ease;
  border-left: 3px solid transparent;
}
.annotation-card:hover {
  background: var(--bg100);
}
.annotation-card.highlighted {
  background: var(--bg100);
  border-left-color: var(--text100);
}

.annotation-card-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 24px;
}

.annotation-card-swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
  border: 1px solid rgba(0, 0, 0, 0.15);
}

/* Swatch for baseline items the user cleared — outlined with a cross
   instead of solid fill, so the panel still shows "this existed in the
   file and you removed it" rather than vanishing. */
.annotation-card-swatch-cleared {
  background: transparent;
  border-color: #4a90d9;
  display: flex;
  align-items: center;
  justify-content: center;
}

.annotation-card-cleared .annotation-card-type,
.annotation-card-cleared .annotation-card-preview {
  opacity: 0.55;
  text-decoration: line-through;
}

.annotation-card-type {
  font-size: 0.7rem;
  color: var(--text200);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  flex-shrink: 0;
}

.annotation-card-preview {
  flex: 1;
  min-width: 0;
  font-size: 0.8rem;
  color: var(--text000);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.annotation-card-delete {
  flex-shrink: 0;
  margin-left: auto;
  background: none;
  border: none;
  padding: 2px;
  cursor: pointer;
  color: var(--text200);
  opacity: 0;
  transition: opacity 0.1s ease, color 0.1s ease;
  display: flex;
  align-items: center;
}
.annotation-card:hover .annotation-card-delete {
  opacity: 1;
}
.annotation-card-delete:hover {
  color: #d32f2f;
}

.annotation-card-expand {
  flex-shrink: 0;
  font-size: 0.65rem;
  color: var(--text200);
  transition: transform 0.15s ease;
}
.annotation-card.expanded .annotation-card-expand {
  transform: rotate(180deg);
}

.annotation-card-content {
  display: none;
  font-size: 0.8rem;
  color: var(--text100);
  padding: 0.25rem 0 0.25rem 14px;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.4;
}
.annotation-card.expanded .annotation-card-content {
  display: block;
}

/* Pulse animation for annotation elements on PDF */
@keyframes annotation-pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 165, 0, 0.6); }
  70% { box-shadow: 0 0 0 8px rgba(255, 165, 0, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 165, 0, 0); }
}
.annotation-pulse {
  animation: annotation-pulse 0.6s ease-out 2;
}

/* Loading Indicator (pie) */
.loading-indicator {
  display: inline-flex;
  align-items: center;
  margin-left: 0.5rem;
  flex-shrink: 0;
  transition: opacity 0.3s;
}
.loading-indicator-bg {
  fill: none;
  stroke: var(--bg200);
  stroke-width: 3;
}
.loading-indicator-arc {
  fill: none;
  stroke: var(--text100);
  stroke-width: 3;
  stroke-dasharray: 50.27; /* 2*pi*8 */
  stroke-dashoffset: 50.27;
  transform: rotate(-90deg);
  transform-origin: center;
  transition: stroke-dashoffset 0.3s;
}
.loading-indicator.error .loading-indicator-arc {
  stroke: #e74c3c;
}


/* Compact toolbar on narrow screens */
@media (max-width: 480px) {
  .toolbar-left {
    display: none;
  }
  .toolbar {
    justify-content: center;
  }
  .nav-btn,
  .zoom-btn,
  .search-btn,
  .fullscreen-btn {
    width: 28px;
    height: 28px;
    font-size: 0.85rem;
  }
  .page-input {
    width: 40px;
    padding: 0.2rem 0.3rem;
    font-size: 0.8rem;
  }
  .total-pages,
  .zoom-level {
    font-size: 0.75rem;
    min-width: 36px;
  }
  .toolbar-center,
  .toolbar-right {
    gap: 0.2rem;
  }
}