/* ==========================================================================
   QuickFileTools – PDF Pages Tools Stylesheet (Rotate, Delete, Extract, Organize)
   Tokens-only design (no hex colors, light & dark theme ready)
   ========================================================================== */

.pages-hero {
  padding: var(--space-8) var(--space-4) var(--space-6);
  text-align: center;
}

.pages-container {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.pages-hero h1 {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-heading);
  line-height: var(--line-height-heading);
  color: var(--ink);
  margin: 0 0 var(--space-3);
}

.pages-subtitle {
  font-size: var(--font-size-base);
  color: var(--ink-muted);
  max-width: var(--max-measure);
  margin: 0 auto var(--space-4);
  line-height: var(--line-height-body);
}

.pages-tool-section {
  padding: 0 0 var(--space-12);
}

/* --------------------------------------------------------------------------
   Step 1: Choose File / Dropzone
   -------------------------------------------------------------------------- */
.pages-tool-card {
  background: var(--sheet);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sheet);
  box-shadow: var(--elevation-sheet);
  padding: var(--space-6);
  margin: 0 auto;
  max-width: var(--max-content);
}

.upload-area {
  border: 2px dashed var(--rule);
  border-radius: var(--radius-sheet);
  padding: var(--space-10) var(--space-4);
  text-align: center;
  background: var(--paper);
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.upload-area:hover,
.upload-area.drag-over {
  border-color: var(--action);
  background: var(--sheet);
}

.upload-icon {
  margin-bottom: var(--space-4);
  color: var(--action);
}

.upload-icon .ui-icon {
  width: 48px;
  height: 48px;
}

.upload-area h2 {
  font-size: var(--font-size-h2);
  margin: 0 0 var(--space-2);
  color: var(--ink);
}

.upload-area p {
  color: var(--ink-muted);
  margin: 0 0 var(--space-4);
}

.upload-area small {
  display: block;
  color: var(--ink-muted);
  font-size: var(--font-size-sm);
  margin-top: var(--space-3);
}

.error-message {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--paper);
  border-left: 4px solid var(--error);
  color: var(--error);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-control);
}

/* --------------------------------------------------------------------------
   Step 2: Edit Grid Layout
   -------------------------------------------------------------------------- */
/* Sections and controls set their own display; keep the hidden attribute working. */
[hidden] {
  display: none !important;
}

.editor-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.file-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--hairline);
}

.file-meta {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.file-name {
  font-weight: var(--font-weight-semibold);
  color: var(--ink);
  font-size: var(--font-size-base);
}

.file-stats {
  color: var(--ink-muted);
  font-size: var(--font-size-sm);
}

.editor-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: start;
}

@media (min-width: 900px) {
  .editor-layout {
    grid-template-columns: 1fr 280px;
  }
}

/* Page Thumbnail Grid */
.pages-grid-wrap {
  position: relative;
}

.pages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-4);
  padding: var(--space-2) 0;
}

@media (max-width: 899px) {
  .pages-grid {
    padding-bottom: 84px; /* Space so fixed bottom bar does not cover last card */
  }
}

.page-card {
  position: relative;
  background: var(--sheet);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-control);
  padding: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  user-select: none;
  transition: outline-color 0.15s ease, transform 0.15s ease;
}

.page-card:hover {
  border-color: var(--rule);
}

.page-card:focus-within {
  outline: 2px solid var(--action);
  outline-offset: 2px;
}

/* Selection / Removal States */
.page-card.is-marked {
  outline: 2px solid var(--error);
  outline-offset: 2px;
  border-color: var(--error);
}

.page-card.is-selected {
  outline: 2px solid var(--action);
  outline-offset: 2px;
  border-color: var(--action);
}

.page-card.is-dragging {
  opacity: 0.4;
}

.page-card-clickable {
  cursor: pointer;
}

.page-thumb-wrap {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: var(--paper);
  border-radius: var(--radius-control);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.page-thumb-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transform-origin: center center;
  transition: transform 0.2s ease;
}

.page-thumb-blank {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  height: 100%;
  background: var(--sheet);
  border: 1px dashed var(--rule);
  border-radius: var(--radius-control);
  color: var(--ink-muted);
  font-size: var(--font-size-sm);
}

.page-status-badge {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  padding: 2px 6px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-control);
  display: flex;
  align-items: center;
  gap: 4px;
}

.page-status-badge.badge-error {
  background: var(--error);
  color: var(--sheet);
}

.page-status-badge.badge-action {
  background: var(--action);
  color: var(--on-action);
}

.page-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--ink);
  padding: 0 var(--space-1);
}

.page-num {
  font-weight: var(--font-weight-semibold);
}

.page-rot {
  font-size: var(--font-size-sm);
  color: var(--ink-muted);
}

/* Card Actions */
.page-actions {
  display: flex;
  gap: var(--space-1);
  justify-content: center;
  align-items: center;
  padding-top: var(--space-1);
  border-top: 1px solid var(--hairline);
}

.page-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  color: var(--ink);
  cursor: pointer;
  padding: 0;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.page-action-btn:hover {
  background: var(--paper);
  border-color: var(--hairline);
}

.page-action-btn:focus-visible {
  outline: 2px solid var(--action);
  outline-offset: 1px;
}

.page-action-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.page-action-btn .ui-icon {
  width: 18px;
  height: 18px;
}

/* Blank page insertion button */
.insert-blank-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 44px;
  min-height: 44px;
  background: var(--sheet);
  border: 1px dashed var(--rule);
  border-radius: var(--radius-control);
  color: var(--ink-muted);
  font-size: var(--font-size-sm);
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  transition: opacity 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  opacity: 0;
}

.page-card:hover + .insert-blank-wrap .insert-blank-btn,
.insert-blank-wrap:hover .insert-blank-btn,
.insert-blank-btn:focus-visible {
  opacity: 1;
}

@media (hover: none) {
  .insert-blank-btn {
    opacity: 1;
  }
}

.insert-blank-btn:hover {
  border-color: var(--action);
  color: var(--action);
  background: var(--paper);
}

.insert-blank-btn .ui-icon {
  width: 16px;
  height: 16px;
}

/* Organize: a round "+" on the card edge, centred in the grid gap. */
.insert-blank-wrap {
  position: absolute;
  top: 40%;
  z-index: 2;
  transform: translate(50%, -50%);
}

.insert-blank-wrap--after {
  right: calc(var(--space-4) / -2);
}

.insert-blank-wrap--before {
  left: calc(var(--space-4) / -2);
  transform: translate(-50%, -50%);
}

.insert-blank-wrap .insert-blank-btn {
  border-radius: 50%;
  padding: 0;
  width: 44px;
}

/* Drop marker while dragging */
.page-card.drop-before::before,
.page-card.drop-after::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--action);
  border-radius: 2px;
}

.page-card.drop-before::before {
  left: calc(var(--space-4) / -2 - 2px);
}

.page-card.drop-after::after {
  right: calc(var(--space-4) / -2 - 2px);
}

[data-pages-mode="organize"] .page-thumb-img {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

body.pages-dragging,
body.pages-dragging * {
  cursor: grabbing;
  user-select: none;
}

/* --------------------------------------------------------------------------
   Sidebar Options Panel
   -------------------------------------------------------------------------- */
.options-panel {
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sheet);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

@media (min-width: 900px) {
  .options-panel {
    position: sticky;
    top: var(--space-4);
  }
}

.panel-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  margin: 0;
  color: var(--ink);
}

.panel-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.panel-group label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--ink);
}

.panel-input {
  box-sizing: border-box;
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--sheet);
  border: 1px solid var(--rule);
  border-radius: var(--radius-control);
  color: var(--ink);
  font-family: inherit;
  font-size: var(--font-size-base);
}

.panel-input:focus {
  outline: 2px solid var(--action);
  outline-offset: 1px;
}

.input-hint {
  font-size: var(--font-size-sm);
  color: var(--ink-muted);
  margin: 0;
}

.input-error {
  font-size: var(--font-size-sm);
  color: var(--error);
  margin: 0;
}

.panel-buttons {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.panel-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  background: var(--sheet);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-control);
  color: var(--ink);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.panel-btn:hover {
  background: var(--paper);
  border-color: var(--rule);
}

.panel-btn:focus-visible {
  outline: 2px solid var(--action);
  outline-offset: 1px;
}

.panel-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.panel-btn .ui-icon {
  width: 16px;
  height: 16px;
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.radio-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--ink);
  cursor: pointer;
  min-height: 44px;
}

.radio-label input[type="radio"] {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  accent-color: var(--action);
}

/* History Undo/Redo Bar */
.history-bar {
  display: flex;
  gap: var(--space-2);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--hairline);
}

/* Status Line & Hints */
.status-line {
  font-size: var(--font-size-sm);
  color: var(--ink-muted);
  min-height: 20px;
}

.action-hint {
  font-size: var(--font-size-sm);
  color: var(--ink-muted);
  margin: var(--space-1) 0 0;
  text-align: center;
}

/* Primary Action Button */
.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: var(--space-3) var(--space-5);
  background: var(--action);
  color: var(--on-action);
  border: none;
  border-radius: var(--radius-control);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  width: 100%;
}

.primary-btn:hover:not(:disabled) {
  opacity: 0.9;
}

.primary-btn:focus-visible {
  outline: 2px solid var(--action);
  outline-offset: 2px;
}

.primary-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
  background: var(--sheet);
  color: var(--ink);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-control);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
}

.secondary-btn:hover {
  background: var(--paper);
  border-color: var(--rule);
}

.secondary-btn:focus-visible {
  outline: 2px solid var(--action);
  outline-offset: 1px;
}

/* Spinner */
.spinner-icon {
  width: 20px;
  height: 20px;
  border: 2px solid var(--on-action);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Mobile Fixed Bottom Bar */
.bottom-action-bar {
  display: none;
}

@media (max-width: 899px) {
  .bottom-action-bar {
    display: block;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--sheet);
    border-top: 1px solid var(--hairline);
    padding: var(--space-3) var(--space-4);
    padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom, 0px));
    z-index: 100;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
  }

  .bottom-action-bar .primary-btn {
    width: 100%;
  }

  .options-panel .primary-btn {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   Step 3: Success Result Screen
   -------------------------------------------------------------------------- */
.success-section {
  text-align: center;
  padding: var(--space-8) var(--space-4);
}

.success-icon {
  color: var(--ok);
  margin-bottom: var(--space-3);
}

.success-icon .ui-icon {
  width: 54px;
  height: 54px;
}

.success-section h2 {
  font-size: var(--font-size-h2);
  margin: 0 0 var(--space-2);
  color: var(--ink);
}

.result-details {
  color: var(--ink-muted);
  font-size: var(--font-size-base);
  margin: 0 0 var(--space-6);
}

.result-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}

.result-actions .primary-btn {
  width: auto;
  min-width: 180px;
}

.continue-links {
  font-size: var(--font-size-sm);
  color: var(--ink-muted);
}

.continue-links a {
  color: var(--action);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
}

.continue-links a:hover {
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Accessibility & Reduced Motion
   -------------------------------------------------------------------------- */
.shell-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* How it works, FAQ and related tools, below the tool */
.content-section {
  box-sizing: border-box;
  max-width: calc(var(--max-content, 1120px) + 2 * var(--space-4, 16px));
  margin: 0 auto;
  padding: var(--space-10, 40px) var(--space-4, 16px);
  border-top: 1px solid var(--hairline);
}

/* No vertical padding, so it takes no space on a tool with no guides yet. */
.tool-guides {
  box-sizing: border-box;
  max-width: calc(var(--max-content, 1120px) + 2 * var(--space-4, 16px));
  margin: 0 auto;
  padding: 0 var(--space-4, 16px);
}

.content-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-4, 16px);
  text-align: left;
}

.content-section h2 {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-heading);
  color: var(--ink);
  margin: 0;
}

.section-intro {
  font-size: var(--font-size-base);
  color: var(--ink-muted);
  line-height: var(--line-height-body);
  margin: 0;
}

.steps-grid,
.use-case-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4, 16px);
}

.step-card,
.use-case-card {
  padding: var(--space-4, 16px);
  background: var(--sheet);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sheet);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--rule);
  color: var(--ink);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-2, 8px);
}

.step-card h3,
.use-case-card h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-heading);
  color: var(--ink);
  margin: 0 0 var(--space-1, 4px);
}

.step-card p,
.use-case-card p {
  font-size: var(--font-size-sm);
  color: var(--ink-muted);
  line-height: var(--line-height-body);
  margin: 0;
}

.use-case-card a {
  color: var(--action);
  text-decoration: underline;
}

@media (min-width: 900px) {
  .steps-grid,
  .use-case-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

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