@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap");

/* Root */
.pdf-compare-root {
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #000000;
  font-size: 17px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px;
  box-sizing: border-box;
}

.pc-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.pc-topbar-left,
.pc-topbar-center,
.pc-topbar-right {
  flex: 1 1 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pc-toolbar-secondary {
  flex-wrap: wrap;
}

.pc-topbar-left {
  justify-content: flex-start;
}
.pc-topbar-center {
  justify-content: center;
}
.pc-topbar-right {
  justify-content: flex-end;
}

.pc-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.pc-toolbar-secondary {
  margin-bottom: 12px;
}

.pc-zoom-controls,
.pc-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pc-btn {
  border-radius: 4px;
  border: 1px solid #e5e7eb;
  background: #f9fafb;
  color: #000000;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 17px;
  line-height: 1.2;
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.pc-btn:hover {
  background: #f3f4f6;
  border-color: #d1d5db;
}

.pc-btn-primary {
  background: #2563eb;
  color: #ffffff;
  border-color: #2563eb;
}

.pc-btn-primary:hover {
  background: #1d4ed8;
  border-color: #1d4ed8;
}

#pc-compare-button {
  background-color: #1f2937;
  border: 1px solid #d1d5db;
  color: white;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  padding: 8px 24px;
  font-weight: 500;
}

#pc-compare-button:hover {
  background-color: #374151;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transform: translateY(-1px);
}

#pc-compare-button.pc-processing {
  pointer-events: none;
  opacity: 0.85;
}

#pc-compare-button.pc-processing::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  animation: loading-shimmer 1.5s infinite;
}

@keyframes loading-shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.pc-btn-light {
  background: #ffffff;
}

.pc-zoom-label {
  font-size: 17px;
  color: #4b5563;
}

/* Upload layout */
.pc-upload-row {
  display: flex;
  gap: 22px;
  align-items: stretch;
}

.pc-upload-col {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.pc-dropzone {
  position: relative;
  border: 2px dashed #cbd5f5;
  border-radius: 10px;
  padding: 34px 16px;
  text-align: center;
  background: #f9fafb;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
  min-height: 220px;
}

.pc-dropzone:hover,
.pc-dropzone.pc-dropzone-active {
  border-color: #2563eb;
  background: #eff6ff;
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.15);
}

.pc-file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 3;
}

.pc-drop-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  position: relative;
  z-index: 1;
}

.pc-drop-icon {
  font-size: 26px;
}

.pc-drop-text {
  font-size: 17px;
  color: #000000;
}

.pc-viewer-wrapper {
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  overflow: hidden;
  background: #ffffff;
  display: none;
}

.pc-viewer-wrapper:not(.pc-hidden) {
  display: block;
}

.pc-hidden {
  display: none !important;
}

.pc-viewer {
  position: relative;
  width: 100%;
  height: 70vh;
  overflow: auto;
  background: #ffffff;
  scroll-behavior: smooth;
}

.pc-pages {
  position: relative;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pc-status {
  margin-top: 8px;
  font-size: 12px;
  color: #6b7280;
}

/* Canvas + page — intrinsic size = viewport; no CSS stretch */
.pc-page {
  position: relative;
  margin: 0 auto;
  background: #ffffff;
  box-shadow: 0 4px 6px rgba(15, 23, 42, 0.24);
}

.pc-page canvas {
  display: block;
  margin: 0;
  vertical-align: top;
}

/*
 * Official PDF.js textLayer rules (from mozilla/pdf.js text_layer_builder.css),
 * scoped + opacity fixed for overlay comparison (viewer uses transparent glyphs).
 */
.pdf-compare-root .pc-text-layer.textLayer {
  position: absolute;
  text-align: initial;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  opacity: 1;
  line-height: 1;
  text-size-adjust: none;
  forced-color-adjust: none;
  pointer-events: auto;
  z-index: 2;
}

/* PDF.js top-level run spans (one per text item from renderTextLayer or manual builder) */
.pdf-compare-root .pc-text-layer.textLayer > span.pc-text-run,
.pdf-compare-root .pc-text-layer.textLayer > span:not(.pc-word-span) {
  color: transparent;
  position: absolute;
  white-space: pre;
  cursor: text;
  transform-origin: 0 0;
}

/* Word-level spans inside a run: flow horizontally inside scaled/rotated parent */
.pdf-compare-root .pc-text-layer.textLayer > span.pc-text-run > span.pc-word-span {
  position: relative !important;
  left: auto !important;
  top: auto !important;
  transform: none !important;
  display: inline !important;
  white-space: pre;
  color: transparent;
  vertical-align: baseline;
  cursor: text;
  transform-origin: 0 0;
}

.pdf-compare-root .pc-text-layer.textLayer br {
  color: transparent;
  white-space: pre;
  transform-origin: 0 0;
}

.pc-word-span a {
  color: #2563eb;
  text-decoration: underline;
}

/* Highlights — only diff spans (.pc-word-added / .pc-word-removed); unchanged words stay untagged */
.pdf-compare-root .pc-upload-col[data-side="left"] .pc-word-span.pc-word-removed,
.pdf-compare-root .pc-upload-col[data-side="left"] .pc-word-span.pc-word-removed a {
  background-color: rgba(255, 80, 100, 0.42) !important;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.pdf-compare-root .pc-upload-col[data-side="left"] .pc-word-span.pc-word-removed a {
  color: #111827 !important;
  text-decoration: underline;
}

.pdf-compare-root .pc-upload-col[data-side="right"] .pc-word-span.pc-word-added,
.pdf-compare-root .pc-upload-col[data-side="right"] .pc-word-span.pc-word-added a {
  background-color: rgba(0, 150, 255, 0.35) !important;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.pdf-compare-root .pc-upload-col[data-side="right"] .pc-word-span.pc-word-added a {
  color: #0f172a !important;
  text-decoration: underline;
}

.pdf-compare-root .pc-upload-col[data-side="left"] .pc-word-span.pc-word-added {
  background-color: transparent !important;
}

.pdf-compare-root .pc-upload-col[data-side="right"] .pc-word-span.pc-word-removed {
  background-color: transparent !important;
}

/* Debug mode */
.pc-debug .pc-word-span {
  border: 1px solid red;
}

@media (max-width: 900px) {
  .pc-upload-row {
    flex-direction: column;
  }

  .pc-viewer {
    height: 60vh;
  }
}