/* Chrome shared by every PDF tool page.
   Tool-specific rules stay in each page's own <style> block. */

body {
  position: static;
}

/* ── Upload zone ──────────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--border-color);
  border-radius: 12px;
  background: var(--background-white);
  padding: 2.6em 2em;
  text-align: center;
  cursor: pointer;
  transition:
    border-color 0.2s,
    background 0.2s,
    padding 0.3s;
  margin-bottom: 1.2em;
}
.upload-zone.compact {
  padding: 1.2em 2em;
}
.upload-zone.compact svg,
.upload-zone.compact p {
  display: none;
}
.upload-zone.compact h2 {
  font-size: 0.95em;
  margin: 0;
}
.upload-zone.drag-over {
  border-color: var(--secondary-blue);
  background: var(--light-blue);
}
.upload-zone svg {
  width: 44px;
  height: 44px;
  stroke: var(--secondary-blue);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  display: block;
  margin: 0 auto 0.5em;
}
.upload-zone h2 {
  font-size: 1.1em;
  color: var(--primary-blue);
  margin-bottom: 0.3em;
}
.upload-zone p {
  font-size: 0.9em;
  color: var(--text-dark);
  opacity: 0.6;
}
#file-input {
  display: none;
}

/* ── Spinner / loading ────────────────────────────────────────── */
.spinner {
  width: 44px;
  height: 44px;
  border: 4px solid var(--border-color);
  border-top-color: var(--secondary-blue);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 3em auto 1em;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
#loading-msg {
  text-align: center;
  color: var(--text-dark);
  opacity: 0.65;
  font-size: 0.95em;
  margin-bottom: 1em;
}

/* ── Toolbar ──────────────────────────────────────────────────── */
.toolbar {
  display: flex;
  align-items: center;
  gap: 0.6em;
  flex-wrap: wrap;
  background: var(--background-white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.7em 1em;
  margin-bottom: 1.2em;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}
.toolbar .file-info {
  font-weight: 600;
  color: var(--primary-blue);
  flex: 1;
  min-width: 8em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.toolbar button {
  font-size: 0.85em;
  padding: 0.45em 0.9em;
}
#selection-info,
#move-info,
#file-size {
  font-size: 0.85em;
  color: var(--text-dark);
  opacity: 0.65;
  white-space: nowrap;
}

/* ── Page grid ────────────────────────────────────────────────── */
.page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1em;
  padding-bottom: 7em;
}
.page-card {
  position: relative;
  background: var(--background-white);
  border: 2px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5em 0.5em 0.4em;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4em;
  transition:
    border-color 0.15s,
    box-shadow 0.15s,
    transform 0.15s;
  user-select: none;
}
.page-card:hover {
  border-color: var(--secondary-blue);
  transform: translateY(-3px);
  box-shadow: 0 5px 14px rgba(0, 0, 0, 0.1);
}
.page-card.selected {
  border-color: var(--secondary-blue);
  background: var(--light-blue);
  box-shadow: 0 0 0 2px var(--secondary-blue);
}
.thumb-box {
  width: 100%;
  line-height: 0;
}
.page-card canvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 3px;
  border: 1px solid var(--border-color);
}
.page-num {
  font-size: 0.75em;
  color: var(--text-dark);
  opacity: 0.6;
}
.page-check {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--secondary-blue);
  color: #fff;
  font-size: 0.75em;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition:
    opacity 0.15s,
    transform 0.15s;
  transform: scale(0.6);
}
.page-card.selected .page-check {
  opacity: 1;
  transform: scale(1);
}

/* ── Options panel ────────────────────────────────────────────── */
.options-panel {
  display: flex;
  align-items: center;
  gap: 1.5em;
  flex-wrap: wrap;
  background: var(--background-white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.8em 1.2em;
  margin-bottom: 1.2em;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}
.option-group {
  display: flex;
  align-items: center;
  gap: 0.5em;
}
.option-group label {
  font-size: 0.85em;
  font-weight: 600;
  color: var(--label-color);
  white-space: nowrap;
}
.options-hint {
  font-size: 0.8em;
  color: var(--text-dark);
  opacity: 0.6;
  flex: 1;
  min-width: 12em;
}
.toggle-group {
  display: flex;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.toggle-btn {
  padding: 0.35em 0.9em;
  background: var(--background-white);
  color: var(--text-dark);
  border: none;
  border-radius: 0;
  font-size: 0.85em;
  font-weight: 600;
  cursor: pointer;
  transition:
    background 0.15s,
    color 0.15s;
}
.toggle-btn:not(:last-child) {
  border-right: 1px solid var(--border-color);
}
.toggle-btn.active {
  background: var(--secondary-blue);
  color: #fff;
}
.toggle-btn:hover:not(.active) {
  background: var(--light-blue);
  color: var(--text-dark);
}
.toggle-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── File / image lists ───────────────────────────────────────── */
.list-header {
  display: flex;
  align-items: center;
  gap: 0.8em;
  flex-wrap: wrap;
  margin-bottom: 0.6em;
}
.list-header .summary {
  flex: 1;
  min-width: 8em;
  font-size: 0.9em;
  color: var(--text-dark);
  opacity: 0.65;
}
.list-header #output-name {
  width: 200px;
  font-size: 0.85em;
  padding: 0.4em 0.6em;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background: var(--background-white);
  color: var(--text-dark);
}
#file-list,
#image-list {
  list-style: none;
  padding: 0;
  margin: 0 0 7em;
  display: flex;
  flex-direction: column;
  gap: 0.6em;
}
.file-item,
.img-item {
  display: flex;
  align-items: center;
  gap: 0.8em;
  background: var(--background-white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.6em 0.8em;
  transition:
    box-shadow 0.15s,
    border-color 0.15s,
    opacity 0.15s;
}
.file-item.drag-over-item,
.img-item.drag-over-item {
  border-color: var(--secondary-blue);
  box-shadow: 0 0 0 2px var(--secondary-blue);
}
.file-item.dragging,
.img-item.dragging {
  opacity: 0.4;
}
.drag-handle {
  cursor: grab;
  color: var(--border-color);
  font-size: 1.2em;
  line-height: 1;
  padding: 0 2px;
  user-select: none;
  flex-shrink: 0;
}
.drag-handle:active {
  cursor: grabbing;
}
.file-thumb,
.img-thumb {
  width: 44px;
  height: 52px;
  flex-shrink: 0;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  overflow: hidden;
  background: var(--background-light);
  display: flex;
  align-items: center;
  justify-content: center;
}
.file-thumb canvas,
.img-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.file-thumb .thumb-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-color);
  border-top-color: var(--secondary-blue);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.file-meta,
.img-meta {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.15em;
}
.file-meta .name,
.img-meta .name,
.file-name {
  font-weight: 600;
  font-size: 0.92em;
  color: var(--text-dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-item > .file-name {
  flex: 1;
}
.file-meta .pages,
.img-meta .dims,
.file-pages {
  font-size: 0.78em;
  color: var(--text-dark);
  opacity: 0.55;
  white-space: nowrap;
}
.order-badge {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--light-blue);
  color: var(--primary-blue);
  font-size: 0.75em;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.move-btns {
  display: flex;
  gap: 0.2em;
  flex-shrink: 0;
}
.move-btns button,
.btn-move {
  background: transparent;
  color: var(--primary-blue);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  width: 26px;
  height: 26px;
  padding: 0;
  font-size: 0.85em;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.move-btns button:hover:not(:disabled),
.btn-move:hover:not(:disabled) {
  background: var(--light-blue);
  border-color: var(--secondary-blue);
  color: var(--primary-blue);
}
.move-btns button:disabled,
.btn-move:disabled {
  background: transparent;
  opacity: 0.35;
  border-color: var(--border-color);
}
.btn-remove {
  background: transparent;
  color: var(--error-red);
  border: 1px solid var(--error-red);
  border-radius: 50%;
  width: 26px;
  height: 26px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8em;
  flex-shrink: 0;
  transition:
    background 0.15s,
    color 0.15s;
}
.btn-remove:hover {
  background: var(--error-red);
  color: #fff;
}

/* ── Progress overlay ─────────────────────────────────────────── */
#progress-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 200;
  gap: 1em;
}
#progress-overlay.hidden {
  display: none;
}
#progress-overlay .spinner {
  width: 44px;
  height: 44px;
  margin: 0;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
}
#progress-overlay p {
  color: #fff;
  font-size: 0.95em;
  opacity: 0.9;
}
#progress-overlay .btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}
#progress-overlay .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
}

/* ── Action bar ───────────────────────────────────────────────── */
.action-bar {
  position: sticky;
  bottom: -2em;
  margin: 0 -2em -2em;
  background: var(--background-white);
  border-top: 1px solid var(--border-color);
  padding: 0.85em 2em;
  display: flex;
  gap: 0.8em;
  align-items: center;
  box-shadow: 0 -3px 12px rgba(0, 0, 0, 0.08);
  z-index: 100;
}
.action-bar.hidden {
  display: none;
}
.action-bar .hint {
  flex: 1;
  min-width: 8em;
  font-size: 0.88em;
  color: var(--text-dark);
  opacity: 0.55;
}

@media (max-width: 700px) {
  .action-bar {
    flex-wrap: wrap;
  }
  .action-bar .hint {
    width: 100%;
    flex-basis: 100%;
  }
  .action-bar button {
    flex: 1;
  }
  .list-header #output-name,
  .toolbar .range-field input {
    width: 100%;
  }
}

/* The body's side padding shrinks on small screens — the sticky bar's
   negative pull has to shrink with it, or the page scrolls sideways. */
@media (max-width: 480px) {
  .action-bar {
    margin-left: -0.5em;
    margin-right: -0.5em;
    padding-left: 1em;
    padding-right: 1em;
  }
}