/* pdfedit — design system (landing + editor). Dark theme, accent #e05252.
   No external fonts: system-ui stack. PDF pages render on white. */

/* ------------------------------- tokens ---------------------------------- */

:root {
  --bg: #0b1020;
  --bg-panel: #131a2e;
  --bg-elevated: #1a2340;
  --text: #e8ecf6;
  --text-muted: #93a0bd;
  --accent: #e05252;
  --accent-strong: #ff6b6b;
  --accent-soft: rgba(224, 82, 82, 0.14);
  --border: #27314f;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow: 0 10px 30px rgba(2, 6, 18, 0.45);
  --shadow-page: 0 6px 24px rgba(2, 6, 18, 0.55);
  --page-bg: #ffffff;
  color-scheme: dark;
}

/* ------------------------------- base ------------------------------------ */

* {
  box-sizing: border-box;
}

html {
  scrollbar-color: var(--bg-elevated) transparent;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
  min-height: 100dvh;
}

/* View toggle: [hidden] must win over any display set below. */
[hidden] {
  display: none !important;
}

::selection {
  background: rgba(224, 82, 82, 0.45);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 2px;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0;
}

a {
  color: var(--accent-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ------------------------------- buttons ---------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  border-radius: 8px;
  padding: 0.45rem 0.85rem;
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.15s ease, border-color 0.15s ease,
    color 0.15s ease;
}

.btn:hover:not(:disabled) {
  background: var(--bg-elevated);
  border-color: var(--text-muted);
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.btn-icon {
  width: 2.1rem;
  height: 2.1rem;
  padding: 0;
  flex: none;
}

.btn-icon[aria-pressed="true"],
.btn-icon.is-active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-strong);
}

/* --------------------------- landing: layout ------------------------------ */

.view-landing {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 1.25rem 1.5rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo {
  border-radius: 9px;
  flex: none;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.brand-tag {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.home-link {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.home-link:hover {
  color: var(--accent-strong);
}

.landing-main {
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  flex: 1;
}

/* --------------------------- landing: hero + dropzone --------------------- */

.hero {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  padding: 2.5rem 0 3.5rem;
}

.hero-title {
  font-size: clamp(2rem, 5.5vw, 3.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero-sub {
  max-width: 34rem;
  margin: 0;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.hero-sub strong {
  color: var(--text);
}

.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  width: 100%;
  max-width: 560px;
  margin-top: 0.75rem;
  padding: 2.4rem 1.5rem;
  background: rgba(19, 26, 46, 0.55);
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease,
    transform 0.15s ease;
}

.dropzone:hover,
.dropzone:focus-visible {
  border-color: var(--text-muted);
  background: var(--bg-panel);
}

.dropzone.is-dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: scale(1.015);
}

.dropzone.is-error {
  border-color: var(--accent-strong);
}

.drop-icon {
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.dropzone.is-dragover .drop-icon,
.dropzone:hover .drop-icon {
  color: var(--accent-strong);
}

.drop-title {
  font-size: 1.15rem;
  font-weight: 600;
}

.drop-sub {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.landing-error {
  margin: 0.75rem 0 0;
  color: var(--accent-strong);
  font-size: 0.95rem;
  font-weight: 500;
}

/* --------------------------- landing: features ---------------------------- */

.section-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.features-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.feature {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.1rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.feature:hover {
  border-color: var(--text-muted);
  transform: translateY(-2px);
}

.feature svg {
  color: var(--accent-strong);
}

.feature-title {
  margin: 0.6rem 0 0.25rem;
  font-size: 1rem;
  font-weight: 600;
}

.feature-desc {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* --------------------------- landing: privacy strip ----------------------- */

.privacy-strip {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-top: 3.5rem;
  padding: 1.5rem 1.4rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.privacy-strip svg {
  color: var(--accent-strong);
  flex: none;
  margin-top: 0.15rem;
}

.privacy-title {
  font-size: 1.05rem;
  font-weight: 700;
}

.privacy-text {
  margin: 0.4rem 0 0;
  color: var(--text-muted);
  font-size: 0.93rem;
}

.privacy-text strong {
  color: var(--text);
}

/* --------------------------- landing: footer ------------------------------ */

.site-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1.75rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--border);
  background: var(--bg-panel);
}

.footer-brand {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem 1.1rem;
  font-size: 0.88rem;
}

.footer-links a {
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--accent-strong);
}

/* ------------------------------ editor: shell ----------------------------- */

.view-editor {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  height: 100dvh;
  overflow: hidden;
}

/* ------------------------------ editor: toolbar --------------------------- */

.toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem 0.6rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding-right: 0.6rem;
  border-right: 1px solid var(--border);
}

.toolbar-group:last-of-type {
  border-right: none;
}

.toolbar-spacer {
  flex: 1 1 auto;
}

.file-name {
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
  padding: 0 0.25rem;
}

.page-indicator {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  padding: 0 0.25rem;
  min-width: 8.5em;
  text-align: center;
}

.zoom-label {
  min-width: 3.6em;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.btn-tool:disabled {
  opacity: 0.55;
}

.btn-danger {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.btn-danger:hover:not(:disabled) {
  background: var(--accent-soft);
  border-color: var(--accent-strong);
}

/* ------------------------------ editor: body ------------------------------ */

.editor-body {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) auto;
  min-height: 0;
}

/* Sidebar: thumbnails */

.thumbs {
  overflow-y: auto;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  padding: 0.75rem 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: grid-column-width 0.15s ease;
}

.thumbs:empty::after {
  content: "Sin páginas";
  color: var(--text-muted);
  font-size: 0.78rem;
  text-align: center;
  margin-top: 0.5rem;
}

.thumb {
  display: block;
  width: 100%;
  padding: 0.4rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.thumb:hover {
  border-color: var(--text-muted);
}

.thumb.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.thumb-canvas {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
  border-radius: 3px;
}

.thumb-num {
  display: block;
  text-align: center;
  margin-top: 0.3rem;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
}

.thumb.active .thumb-num {
  color: var(--accent-strong);
  font-weight: 700;
}

/* Collapsed sidebar (toggle button, and automatically on narrow screens) */

body.thumbs-collapsed .editor-body {
  grid-template-columns: 48px minmax(0, 1fr);
}

body.thumbs-collapsed .thumb {
  padding: 0.3rem 0.15rem;
}

body.thumbs-collapsed .thumb-canvas {
  display: none;
}

/* Drag-reorder cues (listeners live in app.js, on #thumbs) */

.thumb.dragging {
  opacity: 0.45;
}

.thumb.drop-target {
  outline: 2px dashed var(--accent);
  outline-offset: 2px;
}

/* ------------------------------ viewer ------------------------------------ */

.viewer-scroll {
  overflow: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.4rem;
  padding: 1.75rem 1.5rem;
  background: radial-gradient(
      ellipse at 50% 0%,
      rgba(26, 35, 64, 0.5),
      transparent 60%
    ),
    var(--bg);
  min-height: 0;
}

.viewer-scroll:focus-visible {
  outline-offset: -2px;
}

.page-wrap {
  position: relative;
  background: var(--page-bg);
  border-radius: 3px;
  box-shadow: var(--shadow-page);
  scroll-margin-top: 1rem;
  flex: none;
}

.page-canvas {
  display: block;
  border-radius: 3px;
}

.overlay-canvas {
  position: absolute;
  inset: 0;
  pointer-events: auto; /* tools bind pointer gestures here (T5) */
  border-radius: 3px;
}

/* Per-tool cursors on the viewer (class set by app.js on tool change). */

.viewer-scroll.tool-highlight,
.viewer-scroll.tool-ink,
.viewer-scroll.tool-whiteout,
.viewer-scroll.tool-textedit {
  cursor: crosshair;
}

.viewer-scroll.tool-text {
  cursor: text;
}

.viewer-scroll.tool-image {
  cursor: copy;
}

.viewer-scroll.tool-select {
  cursor: default;
}

/* Recognized-text layer (T12): boxes over pdf.js-extracted chunks, rebuilt
   from the live viewport on every render. Fully inert (pointer-transparent)
   unless the textedit tool is active, so every other tool keeps working
   unchanged; interactive chunks hover-highlight and show a text cursor. */

.text-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.text-chunk {
  position: absolute;
  pointer-events: none;
  border-radius: 1px;
}

.viewer-scroll.tool-textedit .text-chunk {
  pointer-events: auto;
  cursor: text;
}

.viewer-scroll.tool-textedit .text-chunk:hover {
  background: rgba(47, 107, 255, 0.16);
  outline: 1px dashed rgba(47, 107, 255, 0.85);
}

/* In-page text editor for the text tool (owned by app.js). */

.text-entry {
  position: absolute;
  z-index: 5;
  min-width: 160px;
  min-height: 1.4em;
  padding: 0 2px;
  margin: 0;
  border: 1px dashed #2f6bff;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.4);
  color: #111111;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.25;
  resize: none;
  overflow: hidden;
  outline: none;
  box-shadow: 0 2px 10px rgba(2, 6, 18, 0.3);
}

/* Textedit flow (T8): the textarea matches the cover rect's width, with a
   120px display floor so a thin cover is still typeable. */

.text-entry.text-entry-cover {
  min-width: 120px;
}

.page-label {
  position: absolute;
  top: calc(100% + 0.45rem);
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.05rem 0.6rem;
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Annotation properties panel (right side; built by app.js) */

.props {
  width: 216px;
  overflow-y: auto;
  background: var(--bg-panel);
  border-left: 1px solid var(--border);
  padding: 0.9rem 0.85rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.props-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.prop-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.prop-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.prop-value {
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.swatch-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.swatch {
  width: 1.55rem;
  height: 1.55rem;
  padding: 0;
  border-radius: 6px;
  border: 1px solid var(--border);
  cursor: pointer;
}

.swatch.is-active {
  outline: 2px solid var(--accent-strong);
  outline-offset: 2px;
}

.prop-range {
  width: 100%;
  margin: 0;
  accent-color: var(--accent);
}

.props-actions {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.props-note {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.78rem;
}

/* AcroForm fields panel (right side; built by app.js from js/forms.js).
   Shares the right rail with #props — app.js guarantees only one is visible. */

.forms-panel {
  width: 216px;
  overflow-y: auto;
  background: var(--bg-panel);
  border-left: 1px solid var(--border);
  padding: 0.9rem 0.85rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.forms-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
}

.forms-subtitle {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.74rem;
  line-height: 1.35;
}

.forms-fields {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.form-label {
  font-size: 0.76rem;
  color: var(--text-muted);
  word-break: break-word;
}

.form-input,
.form-select {
  width: 100%;
  padding: 0.4rem 0.5rem;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.82rem;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-input:disabled,
.form-select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-check,
.form-option {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  color: var(--text);
}

.form-options {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding-left: 0.15rem;
}

.form-options .form-option input,
.form-check input {
  accent-color: var(--accent);
}

.forms-note {
  font-size: 0.72rem;
  line-height: 1.35;
}

/* ------------------------------ status bar -------------------------------- */

.statusbar {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  padding: 0.4rem 0.95rem;
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

.status-dirty {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.status-dirty::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border);
  flex: none;
}

.status-dirty.is-dirty {
  color: var(--accent-strong);
  font-weight: 600;
}

.status-dirty.is-dirty::before {
  background: var(--accent-strong);
}

.status-note {
  color: var(--accent-strong);
  font-weight: 600;
}

/* OCR offer (T13): actionable statusbar button for scanned pages, shown by
   app.js only while the textedit tool sits on a page whose recognition
   layer is known to be empty. Small and quiet — it is an offer, not a mode. */

.status-ocr {
  padding: 0.12rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-elevated);
  color: var(--accent-strong);
  font: inherit;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.5;
  cursor: pointer;
}

.status-ocr:hover,
.status-ocr:focus-visible {
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* ------------------------------ modal ------------------------------------- */

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 40;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 7, 16, 0.68);
}

.modal-card {
  position: relative;
  width: min(430px, calc(100vw - 2.5rem));
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 1.3rem 1.4rem;
}

.modal-title {
  font-size: 1.15rem;
  margin-bottom: 0.45rem;
}

.modal-desc {
  color: var(--text-muted);
  font-size: 0.86rem;
  margin: 0 0 0.9rem;
}

.modal-input {
  width: 100%;
  padding: 0.55rem 0.7rem;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-variant-numeric: tabular-nums;
}

.modal-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.modal-error {
  color: var(--accent-strong);
  font-size: 0.82rem;
  margin: 0.55rem 0 0;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  margin-top: 1.1rem;
}

/* --------------------------- compress modal -------------------------------- */

/* Radio cards: one per quality preset (built by app.js from
   exporter.compressPresets()). The whole label is the click target; the
   checked card gets the accent ring. */
.compress-presets {
  display: grid;
  gap: 0.55rem;
}

.compress-preset {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.6rem 0.7rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
}

.compress-preset:has(input:checked) {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.compress-preset input {
  margin-top: 0.2rem;
  accent-color: var(--accent);
}

.compress-preset-text {
  display: grid;
  gap: 0.1rem;
}

.compress-preset-name {
  font-size: 0.92rem;
  font-weight: 600;
}

.compress-preset-note {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* --------------------------- signature modal ------------------------------- */

/* Wider card so the drawing surface gets ~520 CSS px of room. */
.modal-card-wide {
  width: min(560px, calc(100vw - 2.5rem));
}

.sig-canvas-wrap {
  position: relative;
  margin: 0.15rem 0 0.9rem;
}

/* White surface: signatures are dark ink and must read like paper. The
   backing store is DPR-scaled by app.js; CSS keeps ~520×200 logical px. */
.sig-canvas {
  display: block;
  width: 100%;
  height: 200px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: crosshair;
  touch-action: none; /* drawing must never scroll the page on touch */
}

.sig-hint {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #7c8497;
  font-size: 0.95rem;
  pointer-events: none; /* clicks belong to the canvas */
  transition: opacity 0.15s ease;
}

.sig-hint.is-hidden {
  opacity: 0;
}

.sig-controls {
  display: grid;
  gap: 0.6rem;
  margin-bottom: 0.2rem;
}

/* Left group (Limpiar / Usar última firma) + right Cancelar / Insertar. */
.sig-actions {
  flex-wrap: wrap;
}

.sig-actions-spacer {
  flex: 1;
}

/* ------------------------------ scrollbars -------------------------------- */

.viewer-scroll::-webkit-scrollbar,
.thumbs::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

.viewer-scroll::-webkit-scrollbar-thumb,
.thumbs::-webkit-scrollbar-thumb {
  background: var(--bg-elevated);
  border-radius: 8px;
  border: 2px solid var(--bg);
}

.viewer-scroll::-webkit-scrollbar-thumb:hover,
.thumbs::-webkit-scrollbar-thumb:hover {
  background: var(--border);
}

.viewer-scroll::-webkit-scrollbar-corner,
.thumbs::-webkit-scrollbar-corner {
  background: transparent;
}

/* ------------------------------ responsive -------------------------------- */

@media (max-width: 900px) {
  /* Thumbnails auto-collapse to a slim number-only rail on narrow screens. */
  .editor-body {
    grid-template-columns: 48px minmax(0, 1fr) auto;
  }

  .thumb {
    padding: 0.3rem 0.15rem;
  }

  .thumb-canvas {
    display: none;
  }

  .props {
    width: 168px;
    padding: 0.75rem 0.65rem 0.9rem;
  }

  .forms-panel {
    width: 168px;
    padding: 0.75rem 0.65rem 0.9rem;
  }
}

@media (max-width: 640px) {
  .toolbar {
    gap: 0.35rem;
  }

  .file-name {
    max-width: 120px;
  }

  .page-indicator {
    min-width: 0;
  }

  .viewer-scroll {
    padding: 1rem 0.75rem;
    gap: 2.2rem;
  }

  .privacy-strip {
    flex-direction: column;
  }
}

/* ------------------------------ reduced motion ---------------------------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}