/* PDF Editor — self-contained pe-* UI (uses --theme vars when available) */

.pe-page {
  --pe-primary: var(--theme, #2563eb);
  --pe-primary-hover: var(--theme-deep, #1d4ed8);
  --pe-primary-light: var(--theme-dim, #eff6ff);
  --pe-border: var(--line, #e2e8f0);
  --pe-text: var(--text, #0f172a);
  --pe-muted: var(--muted, #64748b);
  --pe-soft: var(--text-soft, #475569);
  --pe-surface: var(--surface, #fff);
  --pe-page-bg: #f8fafc;
  --pe-danger: #ef4444;
  --pe-success: #10b981;
  --pe-radius: 12px;
  --pe-shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);

  width: 100%;
  padding: 28px 0 56px;
  color: var(--pe-text);
}

.pe-page .pe-hero {
  margin-bottom: 24px;
}

.pe-page .pe-hero__lead {
  margin: 0;
  max-width: 68ch;
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--pe-soft);
}

/* Mode tabs */
.pe-mode-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.pe-mode-tab {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1.5px solid var(--pe-border);
  border-radius: var(--pe-radius);
  background: var(--pe-surface);
  box-shadow: var(--pe-shadow);
  color: var(--pe-text);
  text-decoration: none;
  transition: border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.pe-mode-tab:hover {
  border-color: #bfdbfe;
  background: var(--pe-primary-light);
}

.pe-mode-tab.is-active {
  border-color: var(--pe-primary);
  background: var(--pe-primary-light);
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.12), var(--pe-shadow);
}

.pe-mode-tab__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #f1f5f9;
  color: var(--pe-muted);
  flex-shrink: 0;
}

.pe-mode-tab.is-active .pe-mode-tab__icon {
  background: #dbeafe;
  color: var(--pe-primary);
}

.pe-mode-tab__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.pe-mode-tab__text strong {
  font-size: 0.95rem;
  font-weight: 700;
}

.pe-mode-tab__text small {
  font-size: 0.78rem;
  color: var(--pe-muted);
}

.pe-mode-tab.is-active .pe-mode-tab__text small {
  color: var(--pe-primary);
}

/* Workspace */
.pe-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(260px, 0.75fr);
  gap: 20px;
  align-items: start;
  margin-bottom: 28px;
}

.pe-main {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.pe-card {
  padding: 18px 18px 20px;
  border: 1px solid var(--pe-border);
  border-radius: var(--pe-radius);
  background: var(--pe-surface);
  box-shadow: var(--pe-shadow);
}

.pe-panel[hidden],
.pe-sidebar-settings[hidden],
.pe-config-block[hidden],
.pe-hero__lead[hidden],
.pe-single-file[hidden],
.pe-file-footer[hidden],
.pe-summary__row[hidden],
.pe-preview-empty[hidden] {
  display: none !important;
}

.pe-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.pe-section-head h2 {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--pe-text);
}

.pe-section-actions,
.pe-preview-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Buttons */
.pe-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.pe-btn--solid {
  background: var(--pe-primary);
  color: #fff;
}

.pe-btn--solid:hover:not(:disabled) {
  background: var(--pe-primary-hover);
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.22);
}

.pe-btn--solid:disabled {
  background: #93c5fd;
  cursor: not-allowed;
  box-shadow: none;
}

.pe-btn--outline {
  background: #fff;
  border-color: var(--pe-border);
  color: var(--pe-primary);
}

.pe-btn--outline:hover {
  border-color: var(--pe-primary);
  background: var(--pe-primary-light);
}

.pe-btn--ghost {
  background: transparent;
  color: var(--pe-muted);
  min-height: 32px;
  padding: 0 10px;
  font-size: 0.8rem;
}

.pe-btn--ghost:hover {
  color: var(--pe-primary);
  background: var(--pe-primary-light);
}

.pe-btn--danger-text {
  background: transparent;
  color: var(--pe-danger);
  min-height: 32px;
  padding: 0 8px;
}

.pe-btn--danger-text:hover {
  color: #b91c1c;
  background: #fef2f2;
}

.pe-btn--block {
  width: 100%;
  min-height: 46px;
  font-size: 0.95rem;
}

.pe-btn--sm {
  min-height: 34px;
  padding: 0 12px;
  font-size: 0.82rem;
}

.pe-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--pe-muted);
  cursor: pointer;
}

.pe-icon-btn:hover {
  background: #f1f5f9;
  color: var(--pe-text);
}

.pe-icon-btn--danger:hover {
  background: #fef2f2;
  color: var(--pe-danger);
}

/* Dropzone */
.pe-dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 180px;
  padding: 28px 20px;
  border: 2px dashed #93c5fd;
  border-radius: var(--pe-radius);
  background: var(--pe-primary-light);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.pe-dropzone:hover,
.pe-dropzone:focus-visible,
.pe-dropzone.is-dragover {
  border-color: var(--pe-primary);
  background: #dbeafe;
  outline: none;
}

.pe-dropzone__icon {
  position: relative;
  margin-bottom: 4px;
}

.pe-dropzone__plus {
  position: absolute;
  right: -8px;
  bottom: -4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--pe-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  line-height: 22px;
  border: 2px solid #dbeafe;
}

.pe-dropzone__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--pe-text);
}

.pe-dropzone__hint {
  margin: 0;
  font-size: 0.8rem;
  color: var(--pe-muted);
}

/* File list / cards */
.pe-file-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pe-file-card {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--pe-border);
  border-radius: 10px;
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.pe-file-card.is-dragging {
  opacity: 0.55;
  border-color: var(--pe-primary);
}

.pe-file-card.is-selected {
  border-color: var(--pe-primary);
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.15);
}

.pe-file-card__icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 9px;
  background: #fef2f2;
  color: #dc2626;
}

.pe-file-card__meta {
  min-width: 0;
}

.pe-file-card__name {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 650;
  color: var(--pe-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pe-file-card__sub {
  margin: 2px 0 0;
  font-size: 0.78rem;
  color: var(--pe-muted);
}

.pe-file-card__handle {
  cursor: grab;
  color: var(--pe-muted);
  padding: 4px;
}

.pe-file-card__handle:active {
  cursor: grabbing;
}

.pe-single-file .pe-file-card {
  grid-template-columns: 40px minmax(0, 1fr) auto auto;
  margin-top: 12px;
}

.pe-file-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;
  padding-top: 4px;
}

.pe-file-footer__hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  font-size: 0.8rem;
  color: var(--pe-muted);
}

.pe-file-footer__total {
  margin: 0;
  font-size: 0.88rem;
  color: var(--pe-primary);
  font-weight: 600;
}

.pe-file-footer__total strong {
  font-weight: 700;
}

/* Method / direction cards */
.pe-method-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.pe-method-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: flex-start;
  text-align: left;
  padding: 14px 12px;
  border: 1.5px solid var(--pe-border);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.pe-method-card strong {
  font-size: 0.88rem;
  color: var(--pe-text);
}

.pe-method-card span {
  font-size: 0.76rem;
  color: var(--pe-muted);
  line-height: 1.35;
}

.pe-method-card:hover {
  border-color: #bfdbfe;
  background: var(--pe-primary-light);
}

.pe-method-card.is-active {
  border-color: var(--pe-primary);
  background: var(--pe-primary-light);
}

.pe-method-card.is-active strong {
  color: var(--pe-primary);
}

.pe-direction-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 12px 0 16px;
}

.pe-direction-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 10px;
  border: 1.5px solid var(--pe-border);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  font-family: inherit;
  color: var(--pe-muted);
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.pe-direction-card strong {
  font-size: 0.8rem;
  font-weight: 650;
  text-align: center;
  color: inherit;
}

.pe-direction-card:hover {
  border-color: #bfdbfe;
  background: var(--pe-primary-light);
}

.pe-direction-card.is-active {
  border-color: var(--pe-primary);
  background: var(--pe-primary-light);
  color: var(--pe-primary);
}

/* Form controls */
.pe-fieldset {
  margin: 0 0 14px;
  padding: 0;
  border: 0;
}

.pe-fieldset legend,
.pe-label,
.pe-form-group > label,
.pe-sidebar__section {
  display: block;
  margin-bottom: 8px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--pe-muted);
}

.pe-sidebar__section {
  margin: 4px 0 12px;
  color: var(--pe-text);
  font-size: 0.78rem;
}

.pe-radio,
.pe-check {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--pe-text);
  cursor: pointer;
}

.pe-radio input,
.pe-check input {
  margin-top: 3px;
  accent-color: var(--pe-primary);
  flex-shrink: 0;
}

.pe-radio--block {
  padding: 10px 10px;
  border: 1px solid transparent;
  border-radius: 8px;
}

.pe-radio--block:has(input:checked) {
  background: var(--pe-primary-light);
  border-color: #bfdbfe;
}

.pe-radio--block span {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.pe-radio--block small {
  font-size: 0.76rem;
  font-weight: 400;
  color: var(--pe-muted);
}

.pe-input,
.pe-select {
  width: 100%;
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid var(--pe-border);
  border-radius: 8px;
  background: #fff;
  color: var(--pe-text);
  font: inherit;
  font-size: 0.88rem;
}

.pe-input:focus,
.pe-select:focus {
  outline: none;
  border-color: var(--pe-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.pe-input:disabled {
  background: #f8fafc;
  color: var(--pe-muted);
  cursor: not-allowed;
}

.pe-help {
  margin: 6px 0 0;
  font-size: 0.76rem;
  line-height: 1.45;
  color: var(--pe-muted);
}

.pe-form-group {
  margin: 0 0 14px;
}

.pe-config {
  padding-top: 4px;
}

.pe-split-status {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  background: #f1f5f9;
  font-size: 0.8rem;
  color: var(--pe-soft);
}

/* Preview */
.pe-preview-panel .pe-section-head {
  margin-bottom: 12px;
}

.pe-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
}

.pe-badge--success {
  background: #ecfdf5;
  color: #059669;
}

.pe-preview-scroller {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) 36px;
  gap: 8px;
  align-items: center;
}

.pe-preview-nav {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--pe-border);
  border-radius: 8px;
  background: #fff;
  color: var(--pe-muted);
  cursor: pointer;
}

.pe-preview-nav:hover {
  border-color: var(--pe-primary);
  color: var(--pe-primary);
  background: var(--pe-primary-light);
}

.pe-thumbs {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  scroll-behavior: smooth;
  padding: 8px 4px 12px;
  min-height: 170px;
  scrollbar-width: thin;
}

.pe-thumb {
  position: relative;
  flex: 0 0 auto;
  width: 120px;
  cursor: default;
  user-select: none;
}

.pe-thumbs--selectable .pe-thumb {
  cursor: pointer;
}

.pe-thumb__frame {
  position: relative;
  width: 120px;
  height: 156px;
  border: 1.5px solid var(--pe-border);
  border-radius: 8px;
  background: #f8fafc;
  overflow: hidden;
  display: grid;
  place-items: center;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.pe-thumb:hover .pe-thumb__frame {
  transform: scale(1.03);
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.1);
  z-index: 1;
}

.pe-thumb.is-selected .pe-thumb__frame {
  border-color: var(--pe-primary);
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.2);
}

.pe-thumb__frame canvas {
  max-width: 100%;
  max-height: 100%;
  display: block;
}

.pe-thumb__check {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--pe-primary);
  color: #fff;
  display: none;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.2);
}

.pe-thumb.is-selected .pe-thumb__check {
  display: grid;
}

.pe-thumb__rotate {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: rgba(37, 99, 235, 0.95);
  color: #fff;
  display: none;
  place-items: center;
}

.pe-thumb.will-rotate .pe-thumb__rotate {
  display: grid;
}

.pe-thumb__label {
  display: block;
  margin-top: 6px;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--pe-muted);
}

.pe-preview-empty {
  margin: 8px 0 0;
  font-size: 0.84rem;
  color: var(--pe-muted);
  text-align: center;
}

.pe-preview-hint {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 10px 0 0;
  font-size: 0.82rem;
  color: var(--pe-soft);
}

.pe-legend {
  display: flex;
  gap: 16px;
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--pe-muted);
}

.pe-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.pe-legend__swatch {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 1.5px solid var(--pe-border);
  background: #fff;
}

.pe-legend__swatch.is-selected {
  border-color: var(--pe-primary);
  background: var(--pe-primary-light);
}

/* Sidebar */
.pe-sidebar {
  position: sticky;
  top: 88px;
  padding: 18px 16px 16px;
}

.pe-sidebar__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.pe-sidebar__head h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.pe-sidebar__icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--pe-primary-light);
  color: var(--pe-primary);
}

.pe-sidebar .ui-select {
  width: 100%;
}

.pe-sidebar .ui-select__trigger {
  font-size: 0.86rem;
}

.pe-summary {
  margin: 16px 0;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--pe-primary-light);
  border: 1px solid #dbeafe;
}

.pe-summary__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 0;
  font-size: 0.82rem;
  color: var(--pe-soft);
}

.pe-summary__row strong {
  color: var(--pe-text);
  font-weight: 700;
  text-align: right;
}

.pe-process-btn {
  margin-top: 4px;
}

.pe-status {
  margin: 0;
  min-height: 1.25em;
  font-size: 0.86rem;
  color: var(--pe-muted);
}

.pe-status.is-error {
  color: #b91c1c;
}

.pe-status.is-ok {
  color: var(--pe-primary);
  font-weight: 600;
}

.pe-status.is-busy {
  color: var(--pe-soft);
}

/* Features */
.pe-features {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 8px 0 12px;
}

.pe-feature {
  padding: 18px 16px;
  border: 1px solid var(--pe-border);
  border-radius: var(--pe-radius);
  background: var(--pe-surface);
  box-shadow: var(--pe-shadow);
}

.pe-feature__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 10px;
  border-radius: 10px;
  background: var(--pe-primary-light);
  color: var(--pe-primary);
}

.pe-feature h3 {
  margin: 0 0 6px;
  font-size: 0.95rem;
  font-weight: 700;
}

.pe-feature p {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.5;
  color: var(--pe-muted);
}

.pe-page .info-tile a {
  color: var(--pe-primary);
  font-weight: 600;
}

.pe-page .info-tile a:hover {
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 980px) {
  .pe-workspace {
    grid-template-columns: 1fr;
  }

  .pe-sidebar {
    position: static;
    order: 2;
  }

  .pe-main {
    order: 1;
  }

  .pe-features {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pe-method-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .pe-mode-tabs {
    grid-template-columns: 1fr;
  }

  .pe-direction-grid,
  .pe-method-grid,
  .pe-features {
    grid-template-columns: 1fr;
  }

  .pe-preview-scroller {
    grid-template-columns: 1fr;
  }

  .pe-preview-nav {
    display: none;
  }

  .pe-file-card {
    grid-template-columns: 36px minmax(0, 1fr) auto;
  }

  .pe-file-card__handle {
    display: none;
  }
}