/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body, html {
  width: 100%; height: 100%; overflow: hidden;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #282828;
}

.hidden { display: none !important; }

.material-symbols-outlined {
  font-size: 20px;
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 20;
}

/* ── Layout ──────────────────────────────────────────────────── */
#app-container {
  display: flex; flex-direction: column;
  height: 100%; width: 100%;
}

#main-content {
  display: flex; flex: 1; overflow: hidden; position: relative;
}

/* ── Toolbar ──────────────────────────────────────────────────── */
#toolbar {
  display: flex; justify-content: space-between; align-items: center;
  height: 48px; padding: 0 16px; flex-shrink: 0;
  background: #323639; color: #F1F3F4;
  box-shadow: 0 1px 2px rgba(0,0,0,0.3);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  z-index: 100;
}

#toolbar-left, #toolbar-center, #toolbar-right {
  display: flex; align-items: center; gap: 12px;
}
#toolbar-left  { flex: 1; }
#toolbar-center { flex: 0; justify-content: center; }
#toolbar-right { flex: 1; justify-content: flex-end; }

#document-title {
  font-size: 13px; font-weight: 500; color: #e8eaed;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  max-width: 300px; margin-left: 4px;
}

.icon-button {
  background: transparent; border: none; color: #bdc1c6;
  padding: 8px; border-radius: 4px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, color 0.15s;
}
.icon-button:hover  { background: rgba(255,255,255,0.08); color: #F1F3F4; }
.icon-button.active { background: rgba(138,180,248,0.12); color: #8ab4f8; }
.icon-button:active { background: rgba(138,180,248,0.2);  transform: scale(0.95); }

.divider {
  width: 1px; height: 20px;
  background: rgba(255,255,255,0.1); margin: 0 4px;
}

.zoom-controls {
  display: flex; align-items: center;
  background: rgba(255,255,255,0.05);
  border-radius: 18px; padding: 2px;
}

#zoom-input {
  width: 56px; background: transparent; border: none;
  color: #F1F3F4; text-align: center;
  font-family: inherit; font-size: 13px; font-weight: 500;
}
#zoom-input:focus { outline: none; background: rgba(255,255,255,0.1); border-radius: 4px; }

.toolbar-input {
  background: #202124; border: 1px solid transparent;
  color: #F1F3F4; height: 28px; border-radius: 4px;
  padding: 0 8px; font-family: inherit; font-size: 13px;
}
.toolbar-input:focus { border-color: #1A73E8; outline: none; }

#page-input {
  width: 50px; text-align: right;
  -moz-appearance: textfield; appearance: textfield;
}
#page-input::-webkit-outer-spin-button,
#page-input::-webkit-inner-spin-button { -webkit-appearance: none; appearance: none; }

#page-count { font-size: 13px; color: #bdc1c6; white-space: nowrap; }

/* ── Sub-toolbars (options bars) ──────────────────────────────── */
.options-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 16px; min-height: 44px;
  background: #292a2d; color: #e8eaed; font-size: 13px;
  border-bottom: 1px solid rgba(0,0,0,0.2);
  flex-shrink: 0; overflow-x: auto;
}
.options-bar.hidden { display: none; }

.options-group {
  display: flex; flex-direction: column;
  justify-content: center; gap: 3px; padding: 2px 0;
}
.options-group-header {
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.05em;
  color: #9aa0a6; font-weight: 700; user-select: none;
}
.options-group-controls { display: flex; align-items: center; gap: 6px; }
.options-label { font-size: 12px; color: #bdc1c6; white-space: nowrap; }

.options-divider {
  width: 1px; height: 32px; flex-shrink: 0; margin: 0 4px;
  align-self: center;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.1), transparent);
}

.toolbar-select, .toolbar-input-small {
  background: #1f1f1f; border: 1px solid #3c4043;
  color: #e8eaed; border-radius: 4px;
  padding: 0 8px; font-size: 12px; height: 26px;
  font-family: inherit; outline: none;
}
.toolbar-select:focus, .toolbar-input-small:focus { border-color: #8ab4f8; }
#fmt-family { min-width: 120px; }
#fmt-size, #fmt-spacing { width: 44px; text-align: center; }

.fmt-toggle { font-size: 13px; padding: 4px 8px; height: 26px; }

/* ── Viewer ───────────────────────────────────────────────────── */
#viewer-container {
  flex: 1; overflow: auto; position: relative;
  background: #282828; touch-action: pan-x pan-y;
}

#viewer {
  display: flex; flex-direction: column; align-items: center;
  padding: 16px; gap: 16px;
  transform-origin: top center;
}

.page-container {
  position: relative; background: white;
  box-shadow: 0 2px 4px rgba(0,0,0,0.5);
  display: inline-block;
  width:  calc(var(--page-width,  816px) * var(--scale-factor, 1));
  height: calc(var(--page-height, 1056px) * var(--scale-factor, 1));
}

.page-container > img {
  display: block; width: 100%; height: 100%; image-rendering: auto;
}
.pdfViewer.zoom-in .page-container > img { image-rendering: pixelated; }

/* ── Viewer placeholder / loader ──────────────────────────────── */
#viewer-placeholder {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 12px; color: #9aa0a6; text-align: center;
  pointer-events: none;
}

.spinner {
  width: 48px; height: 48px; margin: 0 auto;
  border: 4px solid rgba(138,180,248,0.1);
  border-left-color: #8ab4f8;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Drag-and-drop overlay ────────────────────────────────────── */
#drag-overlay {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.7); z-index: 9999;
  display: flex; justify-content: center; align-items: center;
}
.drag-text {
  color: white; font-size: 28px; font-weight: 500; pointer-events: none;
  background: rgba(32,33,36,0.9); padding: 24px 48px;
  border-radius: 12px; box-shadow: 0 4px 12px rgba(0,0,0,0.5);
}


/* ── Scrollbars ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 14px; height: 14px; }
::-webkit-scrollbar-track { background: #282828; }
::-webkit-scrollbar-thumb {
  background: #525659; border-radius: 8px; border: 3px solid #282828;
}
::-webkit-scrollbar-thumb:hover { background: #73777A; }

/* ══════════════════════════════════════════════════════════════
   ETV — Embedded Text Overlay
   ══════════════════════════════════════════════════════════════ */

.etv-overlay {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none; z-index: 4;
}

.etv-span {
  position: absolute;
  color: var(--etv-color, rgba(0,100,255,0.85));
  font-family: "Times New Roman", Times, serif;
  white-space: pre; cursor: text;
  pointer-events: auto;
  user-select: text;

  left:        calc(var(--etv-x,  0px) * var(--scale-factor, 1));
  top:         calc(var(--etv-y,  0px) * var(--scale-factor, 1));
  font-size:   calc(var(--etv-fs, 12px) * var(--scale-factor, 1));
  height:      calc(var(--etv-h,  12px) * var(--scale-factor, 1));
  line-height: calc(var(--etv-h,  12px) * var(--scale-factor, 1));
}

.etv-span.selected,
.etv-span:focus {
  outline: none;
  background: rgba(138,180,248,0.15);
  box-shadow: 0 0 0 1px rgba(138,180,248,0.7);
  border-radius: 2px; caret-color: #8ab4f8; z-index: 100;
  color: var(--etv-color, rgba(0,100,255,0.85)) !important;
}

/* Boxes mode: fill bounding box, hide text */
#viewer.etv-boxes-mode .etv-span {
  color: transparent;
  background: var(--etv-box-bg, rgba(0,100,255,0.25));
  border: 1px solid var(--etv-color, rgba(0,100,255,0.85));
  width: calc(var(--etv-w, 0px) * var(--scale-factor, 1));
  overflow: hidden;
}

/* Per-character absolute positioning */
.etv-span[data-char-mode] {
  width: calc(var(--etv-w, 0px) * var(--scale-factor, 1));
  overflow: visible;
}
.etv-span > i {
  position: absolute;
  left: calc(var(--ch-x, 0px) * var(--scale-factor, 1));
  font-style: inherit; white-space: pre;
}

/* Resize handles */
.etv-span .resizer {
  position: absolute; background: transparent; z-index: 110; display: none;
}
.etv-span.selected .resizer,
.etv-span:focus    .resizer { display: block; }
.etv-span .resizer-l { left: -4px; top: 0; bottom: 0; width: 8px; cursor: ew-resize; }
.etv-span .resizer-r { right: -4px; top: 0; bottom: 0; width: 8px; cursor: ew-resize; }
.etv-span .resizer:hover { background: rgba(138,180,248,0.5); }

/* ── Mobile ───────────────────────────────────────────────────── */
@media (max-width: 768px) {
  #toolbar { height: auto; flex-wrap: wrap; padding: 8px 12px; gap: 8px; }
  #toolbar-left  { order: 1; flex: 0 0 auto; }
  #toolbar-center { order: 3; flex: 1 0 100%; margin-top: 4px; }
  #toolbar-right { order: 2; flex: 1; justify-content: flex-end; }
  #document-title { display: none; }
  .zoom-controls  { display: none; }
}

/* ══════════════════════════════════════════════════════════════
   Comparison Panel
   ══════════════════════════════════════════════════════════════ */

#cmp-panel {
  width: 480px; flex-shrink: 0;
  display: flex; flex-direction: column;
  background: #1e1e1e;
  border-left: 1px solid rgba(255,255,255,0.08);
  overflow: hidden;
}
#cmp-panel.hidden { display: none; }

#cmp-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; font-size: 13px; font-weight: 600;
  color: #e8eaed; border-bottom: 1px solid rgba(255,255,255,0.08);
  flex-shrink: 0;
}

#cmp-controls {
  padding: 10px 14px; font-size: 12px; color: #bdc1c6;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  flex-shrink: 0; display: flex; flex-direction: column; gap: 6px;
}

.cmp-row {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.cmp-label {
  width: 80px; flex-shrink: 0; font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.04em;
  color: #9aa0a6; font-weight: 700;
}
.cmp-checks {
  display: flex; flex-direction: column; gap: 2px;
}
.cmp-checks label {
  display: flex; align-items: center; gap: 4px; cursor: pointer;
}
.cmp-run-btn {
  margin-left: auto; padding: 4px 14px; background: #1A73E8;
  color: #fff; border: none; border-radius: 4px;
  font-size: 12px; font-weight: 600; cursor: pointer; font-family: inherit;
}
.cmp-run-btn:hover { background: #1557b0; }
.cmp-run-btn:disabled { background: #3c4043; color: #9aa0a6; cursor: default; }

.cmp-auto-btn {
  padding: 3px 10px; background: #34a853;
  color: #fff; border: none; border-radius: 4px;
  font-size: 11px; font-weight: 600; cursor: pointer; font-family: inherit;
  margin-left: 4px;
}
.cmp-auto-btn:hover { background: #2d8e47; }
.cmp-auto-btn:disabled { background: #3c4043; color: #9aa0a6; cursor: default; }

/* Table */
#cmp-table-wrap {
  flex: 1; overflow: auto;
  font-size: 11px; color: #bdc1c6;
}
#cmp-empty {
  padding: 32px; text-align: center; color: #5f6368; font-size: 13px;
}
#cmp-table {
  width: 100%; border-collapse: collapse; table-layout: auto;
}
#cmp-table th {
  position: sticky; top: 0; background: #252525;
  padding: 6px 8px; text-align: left; white-space: nowrap;
  font-weight: 600; color: #9aa0a6; font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.04em;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
#cmp-table td {
  padding: 5px 8px; border-bottom: 1px solid rgba(255,255,255,0.04);
  white-space: nowrap; max-width: 140px;
  overflow: hidden; text-overflow: ellipsis;
}
#cmp-table tr:hover td { background: rgba(255,255,255,0.04); cursor: pointer; }
#cmp-table tr.cmp-selected td { background: rgba(138,180,248,0.1); }

/* Error colour coding */
.err-good   { color: #81c995; }
.err-warn   { color: #fdd663; }
.err-bad    { color: #f28b82; }
.err-cell   { font-variant-numeric: tabular-nums; }

/* Cell that changed vs the previous run */
.cmp-changed { outline: 1px solid rgba(253,214,99,0.5); background: rgba(253,214,99,0.07); }

/* Span inspector */
#cmp-inspector {
  flex-shrink: 0; border-top: 1px solid rgba(255,255,255,0.08);
  padding: 12px 14px; background: #1a1a1a;
}
#cmp-inspector.hidden { display: none; }
#cmp-inspector-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px; font-size: 12px; font-weight: 600; color: #e8eaed;
}
#cmp-crop-canvas {
  display: block; max-width: 100%;
  border: 1px solid rgba(255,255,255,0.1); border-radius: 4px;
  image-rendering: pixelated;
  margin-bottom: 8px;
}
#cmp-inspector-rows {
  font-size: 11px; color: #bdc1c6; display: flex; flex-direction: column; gap: 3px;
}
.cmp-inspector-row {
  display: flex; align-items: baseline; gap: 8px;
}
.cmp-inspector-row .method-name {
  width: 110px; flex-shrink: 0; color: #9aa0a6;
}
.cmp-inspector-bar-wrap {
  flex: 1; height: 6px; background: rgba(255,255,255,0.06);
  border-radius: 3px; overflow: hidden; align-self: center;
}
.cmp-inspector-bar {
  height: 100%; border-radius: 3px;
  background: #8ab4f8; transition: width 0.2s;
}

/* ── HarfBuzz page overlay ────────────────────────────────── */
.cmp-page-overlay {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none; z-index: 5;
}

.cmp-span-marker {
  position: absolute;
  left:        calc(var(--etv-x,  0px) * var(--scale-factor, 1));
  top:         calc(var(--etv-y,  0px) * var(--scale-factor, 1));
  width:       calc(var(--etv-w,  0px) * var(--scale-factor, 1));
  height:      calc(var(--etv-h,  0px) * var(--scale-factor, 1));
  font-size:   calc(var(--etv-fs, 12px) * var(--scale-factor, 1));
  line-height: calc(var(--etv-h,  12px) * var(--scale-factor, 1));
  color: var(--cmp-text-color, rgba(74, 144, 226, 0.7));
  white-space: pre;
  overflow: visible;
  border-radius: 2px;
  pointer-events: auto;
  cursor: default;
}
.cmp-span-marker > i {
  position: absolute;
  left: calc(var(--ch-x, 0px) * var(--scale-factor, 1));
  font-style: inherit; white-space: pre;
}
.cmp-span-marker.err-good {
  background: rgba(129,201,149,0.18);
  border: 1px solid rgba(129,201,149,0.65);
}
.cmp-span-marker.err-warn {
  background: rgba(253,214,99,0.18);
  border: 1px solid rgba(253,214,99,0.65);
}
.cmp-span-marker.err-bad {
  background: rgba(242,139,130,0.18);
  border: 1px solid rgba(242,139,130,0.65);
}

.cmp-span-marker.selected,
.cmp-span-marker.cmp-selected,
.cmp-span-marker:focus {
  outline: none;
  background: rgba(138,180,248,0.3) !important;
  box-shadow: 0 0 0 2px #8ab4f8 !important;
  border-color: #8ab4f8 !important;
  z-index: 100;
}

/* End-of-span marker lines */
.cmp-end-line {
  position: absolute;
  top: 0;
  height: 100%;
  width: 0;
  pointer-events: none;
}
.cmp-pdf-end {
  left: 100%;
  border-left: 2px solid rgba(220, 50, 50, 0.85);
}
.cmp-hb-end {
  left: calc(var(--hb-w, 0px) * var(--scale-factor, 1));
  border-left: 2px dashed rgba(50, 180, 100, 0.85);
}

/* ── Calibration summary ──────────────────────────────────── */
#cmp-cal-summary {
  padding: 10px 14px;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: rgba(0,0,0,0.15);
  font-size: 11px;
  color: #bdc1c6;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.cal-group {
  padding: 4px 8px;
  border-radius: 4px;
  background: rgba(255,255,255,0.03);
}
.cal-group strong { color: #e8eaed; }
.cal-group.cal-primary {
  background: rgba(138,180,248,0.1);
  border-left: 3px solid #8ab4f8;
}
.cal-meta {
  color: #9aa0a6;
  font-size: 10px;
  margin-left: 4px;
}