:root {
    --cream: #f5f0e8;
    --parchment: #ede5d0;
    --tan: #c9b99a;
    --brown: #2e5c85;
    --dark: #152d45;
    --ink: #0c1926;
    --red: #8b2020;
    --gold: #3f7eb5;
    --green: #2f6a3a;
    --shadow: rgba(21, 45, 69, 0.15);
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }

  body {
    background: var(--cream);
    color: var(--ink);
    font-family: 'EB Garamond', Georgia, serif;
    min-height: 100vh;
    padding-bottom: env(safe-area-inset-bottom);
  }

  button, input, select, textarea { font: inherit; }

  header {
    background: #1a3355;
    color: var(--cream);
    padding: 12px 32px;
    border-bottom: 4px solid var(--gold);
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
  }

  .header-logo {
    height: 42px;
    width: auto;
    border-radius: 6px;
    flex-shrink: 0;
    background: #fff;
    padding: 5px 10px;
    box-shadow: 0 1px 6px rgba(0,0,0,0.25);
  }

  .header-user {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
  }

  header h1 {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    letter-spacing: 0.02em;
  }

  .subtitle,
  .count-badge,
  .api-badge {
    font-family: 'Courier Prime', monospace;
    font-size: 0.76rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .subtitle { color: var(--tan); }

  .count-badge,
  .api-badge {
    border: 1px solid var(--gold);
    color: #fff;
    padding: 4px 10px;
    border-radius: 2px;
  }

  .count-badge { margin-left: 4px; }
  .api-badge.offline { border-color: #6a8daa; color: #6a8daa; }
  .api-badge.online { border-color: #c8dfb8; color: #c8dfb8; }

  .main {
    max-width: 1440px;
    margin: 0 auto;
    padding: 28px 24px;
    display: grid;
    grid-template-columns: 360px minmax(0, 1.2fr) 380px;
    gap: 32px;
    align-items: start;
  }

  .panel {
    background: var(--parchment);
    border: 1px solid var(--tan);
    border-radius: 2px;
    box-shadow: 3px 3px 12px var(--shadow);
    overflow: hidden;
  }

  .panel-header {
    background: var(--brown);
    color: var(--cream);
    padding: 10px 16px;
    font-family: 'Playfair Display', serif;
    font-size: 0.95rem;
    letter-spacing: 0.05em;
  }

  .panel-body { padding: 16px; }

  @media (min-width: 1024px) {
    body.desktop-add-collapsed .main {
      grid-template-columns: 72px minmax(0, 0.9fr) minmax(460px, 1.1fr);
    }
    body.desktop-briefing-expanded .main {
      grid-template-columns: 320px minmax(0, 0.92fr) 560px;
    }
    body.desktop-add-collapsed.desktop-briefing-expanded .main {
      grid-template-columns: 72px minmax(0, 0.72fr) minmax(620px, 1.28fr);
    }
    #catalogPanel {
      background: #fbf7ef;
      border: 1px solid rgba(201, 185, 154, 0.85);
      border-radius: 4px;
      box-shadow: 8px 12px 28px rgba(21, 45, 69, 0.12);
      padding: 18px 20px 20px;
    }
    #addPanel .panel,
    #briefingPanel.panel {
      background: linear-gradient(180deg, #efe7d7 0%, #ebe2d0 100%);
      border-color: rgba(201, 185, 154, 0.8);
      box-shadow: 2px 4px 12px rgba(21, 45, 69, 0.1);
    }
    #addPanel .panel-header,
    #briefingPanel .panel-header {
      background: #3b648c;
    }
    #addPanel .panel-body,
    #briefingPanel .panel-body {
      padding: 18px 18px 22px;
    }
    #addPanel .panel-header {
      justify-content: space-between;
    }
    #addPanel .panel-body {
      max-height: calc(100vh - 150px);
      overflow: auto;
    }
    #addPanel .add-chooser,
    #addPanel .single-add-chooser,
    #addPanel .bulk-mode-cards {
      grid-template-columns: 1fr;
    }
    #addPanel .bulk-mode-btn {
      width: 100%;
    }
    #addPanel .single-add-pane,
    #addPanel .review-section,
    #addPanel #tabManual,
    #addPanel #tabBulk {
      margin-top: 10px;
    }
    .add-panel-toggle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      border: 1px solid rgba(255,255,255,0.35);
      background: transparent;
      color: var(--cream);
      border-radius: 2px;
      cursor: pointer;
      flex-shrink: 0;
    }
    .add-panel-toggle:hover {
      border-color: rgba(255,255,255,0.6);
      background: rgba(255,255,255,0.08);
    }
    .panel-focus-toggle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      border: 1px solid rgba(255,255,255,0.35);
      background: transparent;
      color: var(--cream);
      border-radius: 2px;
      cursor: pointer;
      flex-shrink: 0;
    }
    .panel-focus-toggle:hover {
      border-color: rgba(255,255,255,0.6);
      background: rgba(255,255,255,0.08);
    }
    body.desktop-briefing-expanded #briefingPanelToggle svg {
      transform: scaleX(-1);
    }
    body.desktop-add-collapsed #addPanel .panel-body {
      display: none;
    }
    body.desktop-add-collapsed #addPanel .panel {
      overflow: visible;
    }
    body.desktop-add-collapsed #addPanel .panel-header {
      padding: 12px 10px;
      justify-content: center;
      gap: 6px;
      min-height: 72px;
    }
    body.desktop-add-collapsed #addPanelTitle {
      font-size: 0.72rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      writing-mode: vertical-rl;
      transform: rotate(180deg);
    }
    body.desktop-add-collapsed #addPanelToggle svg {
      transform: rotate(180deg);
    }
    body.desktop-add-collapsed #editBackBtn {
      display: none !important;
    }
    #briefingPanel {
      position: sticky;
      top: 20px;
      max-height: calc(100vh - 40px);
      display: flex;
      flex-direction: column;
    }
    #briefingPanel .panel-body {
      display: flex;
      flex-direction: column;
      min-height: 0;
      overflow: hidden;
    }
    #briefingPanel .briefing-scroll {
      flex: 1 1 auto;
      min-height: 0;
      max-height: none;
    }
    body.desktop-briefing-expanded #briefingPanel {
      top: 16px;
      max-height: calc(100vh - 32px);
    }
    body.desktop-briefing-expanded #briefingPanel .panel-body {
      padding: 20px 20px 24px;
    }
    #catalogPanel .catalog-toolbar,
    #catalogPanel .filter-pills,
    #catalogPanel .catalog-actions {
      margin-bottom: 12px;
    }
    #catalogPanel .search-input,
    #catalogPanel .sort-select {
      background: #fffdf8;
    }
  }

  /* Back button in Briefing panel header — only shown on mobile nav layout */
  .briefing-back-btn {
    display: none;
    background: none;
    border: none;
    color: var(--cream);
    cursor: pointer;
    padding: 2px 4px;
    opacity: 0.8;
    flex-shrink: 0;
  }
  .briefing-back-btn:hover { opacity: 1; }

  .tabs {
    display: flex;
    margin-bottom: 16px;
    border-bottom: 2px solid var(--tan);
    gap: 4px;
    flex-wrap: wrap;
  }

  .tab {
    padding: 9px 16px;
    font-family: 'Courier Prime', monospace;
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    cursor: pointer;
    border: none;
    background: transparent;
    color: var(--brown);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    white-space: nowrap;
  }

  .tab.active {
    color: var(--red);
    border-bottom-color: var(--red);
    font-weight: 700;
  }

  .form-group { margin-bottom: 13px; }

  label {
    display: block;
    font-family: 'Courier Prime', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--brown);
    margin-bottom: 4px;
  }

  input, select, textarea {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--tan);
    background: #faf7f2;
    color: var(--ink);
    border-radius: 1px;
    outline: none;
  }

  input:focus, select:focus, textarea:focus {
    border-color: var(--brown);
    background: #fff;
  }

  textarea { resize: vertical; min-height: 78px; }

  .share-option-row {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 10px;
    cursor: pointer;
    font-size: 0.88rem;
    line-height: 1.4;
    text-transform: none;
    letter-spacing: normal;
    margin-bottom: 10px;
  }
  .share-option-row input[type="checkbox"] {
    width: auto;
    display: inline-block;
    padding: 0;
    border: none;
    background: transparent;
    margin: 3px 0 0;
    flex: 0 0 auto;
  }
  .share-option-copy {
    display: block;
    color: var(--ink);
  }
  .icon-action-btn {
    min-width: 36px;
    width: 36px;
    height: 36px;
    padding: 0;
    gap: 0;
  }
  .icon-action-btn svg,
  .icon-action-btn .icon-badge {
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
  }
  .icon-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: 'Playfair Display', serif;
    font-size: 0.92rem;
    font-weight: 700;
    line-height: 1;
  }

  .isbn-row,
  .catalog-toolbar,
  .button-row,
  .modal-actions {
    display: flex;
    gap: 8px;
    align-items: center;
  }

  .isbn-row input,
  .search-input { flex: 1; }

  .spoiler-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 0.82em;
    font-family: var(--mono);
    color: var(--brown);
    font-weight: 600;
    margin-left: 8px;
    user-select: none;
  }
  .spoiler-toggle input { display: none; }
  .toggle-slider {
    position: relative;
    width: 32px;
    height: 18px;
    background: var(--brown);
    border-radius: 9px;
    transition: background 0.2s;
  }
  .toggle-slider::after {
    content: "";
    position: absolute;
    top: 2px;
    left: 2px;
    width: 14px;
    height: 14px;
    background: var(--parchment);
    border-radius: 50%;
    transition: transform 0.2s;
  }
  .spoiler-toggle input:checked + .toggle-slider {
    background: var(--gold);
  }
  .spoiler-toggle input:checked + .toggle-slider::after {
    transform: translateX(14px);
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 14px;
    border: none;
    cursor: pointer;
    font-family: 'Courier Prime', monospace;
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    border-radius: 1px;
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  }

  .btn-primary { background: var(--red); color: #fff; width: 100%; }
  .btn-primary:hover { background: #6e1a1a; }
  .btn-secondary { background: var(--brown); color: var(--cream); }
  .btn-secondary:hover { background: var(--dark); }
  .btn-accent { background: var(--gold); color: #fff; }
  .btn-accent:hover { background: #2e699e; color: #fff; }
  .btn-light { background: transparent; border: 1px solid var(--tan); color: var(--brown); }
  .btn-light:hover { border-color: var(--brown); }
  .btn-danger { background: transparent; border: 1px solid #c8a4a4; color: var(--red); }
  .btn-danger:hover { border-color: var(--red); }
  .btn-sm { padding: 5px 10px; font-size: 0.68rem; }
  .btn:disabled { opacity: 0.55; cursor: wait; }
  .add-chooser {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 14px;
  }
  .chooser-card {
    background: var(--cream);
    border: 1px solid var(--tan);
    border-left: 3px solid var(--tan);
    border-radius: 2px;
    padding: 12px;
    text-align: left;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s, transform 0.15s;
  }
  .chooser-card:hover { background: #fbf8f2; border-left-color: var(--brown); }
  .chooser-card.active { border-left-color: var(--red); background: #fffaf3; }
  .chooser-title {
    font-family: 'Playfair Display', serif;
    font-size: 0.95rem;
    color: var(--dark);
    font-weight: 700;
  }
  .chooser-copy {
    margin-top: 4px;
    font-size: 0.78rem;
    color: var(--brown);
    line-height: 1.45;
  }
  .chooser-kicker {
    margin-top: 6px;
    font-family: 'Courier Prime', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--tan);
  }
  .add-flow-stage {
    margin-top: 14px;
    padding: 12px;
    background: #f8f3ea;
    border: 1px solid var(--tan);
    border-top: 3px solid rgba(63, 126, 181, 0.28);
    border-radius: 2px;
  }
  .add-flow-stage-label {
    margin-bottom: 10px;
    font-family: 'Courier Prime', monospace;
    font-size: 0.66rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--brown);
  }

  .lookup-status,
  .helper-text,
  .research-status {
    min-height: 0;
    margin-top: 6px;
    font-size: 0.84rem;
    color: var(--brown);
    font-style: italic;
  }
  #briefingStatus {
    display: none;
    position: relative;
    z-index: 1;
    flex: 0 0 auto;
  }
  #briefingStatus:not(:empty) {
    display: block;
    margin-top: 0;
    padding: 8px 10px;
    line-height: 1.4;
    background: rgba(59, 100, 140, 0.08);
    border: 1px solid rgba(59, 100, 140, 0.22);
    border-radius: 2px;
  }
  #briefingStatus.error {
    background: rgba(180, 60, 40, 0.08);
    border-color: rgba(180, 60, 40, 0.25);
  }
  #briefingStatus.success {
    background: rgba(33, 115, 70, 0.08);
    border-color: rgba(33, 115, 70, 0.24);
  }

  .lookup-status.error,
  .research-status.error { color: var(--red); }
  .lookup-status.success,
  .research-status.success { color: var(--green); }
  .lookup-status.warning { color: var(--brown); }
  .catalog-granularity-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 10px;
  }
  .catalog-granularity-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--ink);
  }
  .catalog-granularity-toggle input {
    width: auto;
    margin: 0;
    accent-color: var(--ink);
  }
  .catalog-granularity-helper {
    font-size: 0.75rem;
    color: var(--brown);
    line-height: 1.4;
  }
  body.ui-compact #addPanel .chooser-copy,
  body.ui-icons #addPanel .chooser-copy,
  body.ui-compact #addPanel .chooser-kicker,
  body.ui-icons #addPanel .chooser-kicker,
  body.ui-compact #addPanel .single-add-copy,
  body.ui-icons #addPanel .single-add-copy,
  body.ui-compact #addPanel .single-add-kicker,
  body.ui-icons #addPanel .single-add-kicker,
  body.ui-compact #addPanel .bulk-explanation,
  body.ui-icons #addPanel .bulk-explanation,
  body.ui-compact #addPanel .bulk-mode-copy,
  body.ui-icons #addPanel .bulk-mode-copy,
  body.ui-compact #addPanel .bulk-mode-meta,
  body.ui-icons #addPanel .bulk-mode-meta,
  body.ui-compact #addPanel .bulk-photo-helper,
  body.ui-icons #addPanel .bulk-photo-helper,
  body.ui-compact #addPanel .photo-lookup-row .helper-text,
  body.ui-icons #addPanel .photo-lookup-row .helper-text {
    display: none;
  }
  body.ui-compact #addPanel .add-chooser,
  body.ui-icons #addPanel .add-chooser,
  body.ui-compact #addPanel .single-add-chooser,
  body.ui-icons #addPanel .single-add-chooser,
  body.ui-compact #addPanel .bulk-mode-cards,
  body.ui-icons #addPanel .bulk-mode-cards {
    gap: 8px;
  }
  body.ui-compact #addPanel .chooser-card,
  body.ui-icons #addPanel .chooser-card,
  body.ui-compact #addPanel .single-add-card,
  body.ui-icons #addPanel .single-add-card,
  body.ui-compact #addPanel .bulk-mode-card,
  body.ui-icons #addPanel .bulk-mode-card {
    padding-top: 10px;
    padding-bottom: 10px;
  }
  body.ui-compact #addPanel .add-flow-stage,
  body.ui-icons #addPanel .add-flow-stage {
    margin-top: 12px;
    padding: 10px;
  }
  body.ui-compact #addPanel .catalog-granularity-helper,
  body.ui-icons #addPanel .catalog-granularity-helper {
    display: none;
  }

  .search-results {
    margin: 10px 0 14px;
    border: 1px solid var(--tan);
    background: #f8f3ea;
    max-height: 220px;
    overflow: auto;
  }

  .search-result-item {
    width: 100%;
    border: none;
    border-bottom: 1px dashed var(--tan);
    background: transparent;
    text-align: left;
    padding: 10px 12px;
    cursor: pointer;
    color: var(--ink);
  }

  .search-result-item:last-child {
    border-bottom: none;
  }

  .search-result-item:hover {
    background: #fffdf8;
  }

  .search-result-title {
    font-family: 'Playfair Display', serif;
    font-size: 1rem;
    color: var(--dark);
  }

  .search-result-meta {
    margin-top: 4px;
    font-size: 0.78rem;
    color: var(--brown);
    font-family: 'Courier Prime', monospace;
  }

  .cover-preview {
    text-align: center;
    margin-top: 4px;
    min-height: 0;
  }

  .cover-preview img {
    max-height: 128px;
    border: 2px solid var(--tan);
    box-shadow: 2px 3px 8px var(--shadow);
  }

  .form-divider {
    border: none;
    border-top: 1px dashed var(--tan);
    margin: 14px 0;
  }

  /* Edit-mode read-only book header */
  .edit-book-cover-row {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 12px;
    background: var(--parchment);
    border: 1px solid var(--tan);
    border-radius: 2px;
    margin-bottom: 14px;
  }
  .edit-book-cover {
    width: 56px;
    min-width: 56px;
    height: 76px;
    border: 1px solid var(--tan);
    border-radius: 1px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cream);
    font-size: 1.4rem;
    color: var(--tan);
    flex-shrink: 0;
  }
  .edit-book-cover img { width: 100%; height: 100%; object-fit: cover; }
  .edit-book-biblio { flex: 1; min-width: 0; }
  .edit-biblio-title {
    font-family: 'Playfair Display', serif;
    font-size: 0.97rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.3;
    word-break: break-word;
  }
  .edit-biblio-author {
    font-style: italic;
    font-size: 0.88rem;
    color: var(--brown);
    margin-top: 3px;
  }
  .edit-biblio-meta {
    font-family: 'Courier Prime', monospace;
    font-size: 0.7rem;
    color: var(--brown);
    margin-top: 5px;
    line-height: 1.5;
    opacity: 0.85;
  }
  .edit-locked-note {
    font-family: 'Courier Prime', monospace;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--tan);
    margin-top: 6px;
  }

  /* ── Bulk Load tab ── */
  .metadata-refresh-panel {
    margin-top: 10px;
    padding: 10px;
    border: 1px solid var(--tan);
    background: rgba(244, 236, 219, 0.75);
    border-radius: 2px;
  }
  .metadata-refresh-copy {
    font-size: 0.8rem;
    color: var(--brown);
    line-height: 1.45;
    margin-bottom: 8px;
  }
  .metadata-refresh-actions,
  .metadata-refresh-existing-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }
  .metadata-refresh-existing-grid {
    margin-top: 8px;
  }
  .metadata-refresh-photo {
    width: 86px;
    border: 1px solid var(--tan);
    background: var(--cream);
    padding: 6px;
    border-radius: 2px;
    text-align: center;
  }
  .metadata-refresh-photo img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    border: 1px solid rgba(140, 104, 65, 0.24);
    display: block;
    margin-bottom: 6px;
  }
  .metadata-refresh-photo-label {
    font-family: 'Courier Prime', monospace;
    font-size: 0.6rem;
    color: var(--brown);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
    line-height: 1.25;
  }
  .metadata-refresh-banner {
    margin: 0 0 12px;
    padding: 10px 12px;
    border-left: 3px solid var(--gold);
    border: 1px solid var(--tan);
    background: rgba(255, 248, 232, 0.92);
    color: var(--brown);
    font-size: 0.84rem;
    line-height: 1.45;
  }
  .beta-badge {
    display: inline-block;
    background: var(--gold);
    color: #fff;
    font-family: 'Courier Prime', monospace;
    font-size: 0.58rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 1px 5px;
    border-radius: 2px;
    vertical-align: middle;
    margin-left: 5px;
    line-height: 1.6;
  }
  .bulk-explanation {
    font-size: 0.88rem;
    color: var(--brown);
    line-height: 1.55;
    margin-bottom: 14px;
  }
  .bulk-photo-btn-row { display: flex; gap: 8px; margin-bottom: 10px; }
  .bulk-mode-btn-row  { display: flex; gap: 8px; margin-bottom: 6px; }
  .bulk-mode-btn      { flex: 1; }
  .bulk-expand-row {
    display: flex; gap: 8px; padding: 8px 10px; margin-bottom: 8px;
    background: var(--parchment); border: 1px solid var(--tan); border-radius: 2px;
  }
  .bulk-book-cards { display: flex; flex-direction: column; gap: 7px; margin: 10px 0; }
  .bulk-book-card {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 7px 9px;
    border: 1px solid var(--tan);
    border-left: 3px solid var(--tan);
    border-radius: 1px;
    background: var(--cream);
    transition: border-left-color 0.15s, opacity 0.15s;
  }
  .bulk-book-card.is-correct  { border-left-color: var(--green); }
  .bulk-book-card.is-incorrect { border-left-color: var(--red); opacity: 0.55; }
  .bulk-book-thumb {
    width: 34px; min-width: 34px; height: 48px;
    border: 1px solid var(--tan); border-radius: 1px;
    overflow: hidden; display: flex; align-items: center; justify-content: center;
    background: var(--parchment); font-size: 1rem; color: var(--tan); flex-shrink: 0;
  }
  .bulk-book-thumb img { width: 100%; height: 100%; object-fit: cover; }
  .bulk-book-info { flex: 1; min-width: 0; }
  .bulk-book-title {
    font-family: 'Playfair Display', serif;
    font-size: 0.88rem; font-weight: 700; color: var(--dark);
    line-height: 1.25; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  }
  .bulk-book-author {
    font-size: 0.78rem; color: var(--brown); font-style: italic;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 1px;
  }
  .bulk-book-meta {
    font-family: 'Courier Prime', monospace; font-size: 0.62rem;
    color: var(--tan); margin-top: 2px;
  }
  .bulk-book-reason {
    margin-top: 5px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
  }
  .bulk-cover-choice {
    margin-top: 7px;
    display: flex;
    gap: 8px;
    align-items: flex-start;
  }
  .bulk-cover-choice .cover-choice-thumb img {
    width: 42px;
    height: 58px;
  }
  .bulk-cover-choice .cover-choice-thumb span {
    font-size: 0.54rem;
  }
  .bulk-cover-choice-hint {
    margin-top: 5px;
    font-family: 'Courier Prime', monospace;
    font-size: 0.6rem;
    color: var(--tan);
    letter-spacing: 0.03em;
  }
  .bulk-candidate-toggle {
    margin-top: 8px;
    border: none;
    background: transparent;
    padding: 0;
    color: var(--brown);
    font-family: 'Courier Prime', monospace;
    font-size: 0.66rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    cursor: pointer;
  }
  .bulk-candidate-toggle:hover {
    color: var(--dark);
  }
  .bulk-candidate-list {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 5px;
  }
  .bulk-candidate-list .candidate-item {
    padding: 7px 9px;
    background: #fbf8f2;
  }
  .bulk-candidate-list .candidate-item.is-selected {
    border-color: var(--brown);
    background: #f2ead8;
  }
  .bulk-toggle-btns { display: flex; flex-direction: column; gap: 3px; flex-shrink: 0; }
  .bulk-toggle-btn {
    width: 30px; height: 24px;
    border: 1px solid var(--tan); background: transparent; border-radius: 1px;
    cursor: pointer; font-size: 0.8rem; color: var(--brown);
    display: flex; align-items: center; justify-content: center;
    transition: background 0.12s, color 0.12s, border-color 0.12s;
  }
  .bulk-toggle-btn.active-correct  { background: var(--green); border-color: var(--green); color: #fff; }
  .bulk-toggle-btn.active-incorrect { background: var(--red);   border-color: var(--red);   color: #fff; }
  .bulk-results-hdr {
    font-family: 'Courier Prime', monospace; font-size: 0.72rem;
    text-transform: uppercase; letter-spacing: 0.06em; color: var(--brown); margin-bottom: 8px;
  }
  .mobile-review-progress {
    display: none;
  }
  .bulk-action-meta {
    display: none;
  }
  .bulk-fix-prompt {
    font-size: 0.88rem; color: var(--brown); line-height: 1.5;
    margin: 10px 0 8px; padding: 10px 12px;
    background: var(--parchment); border: 1px dashed var(--tan); border-radius: 1px;
  }
  .bulk-correction-hdr {
    font-family: 'Playfair Display', serif; font-style: italic;
    font-size: 1rem; color: var(--dark); margin-bottom: 12px;
    padding-bottom: 8px; border-bottom: 1px dashed var(--tan);
  }
  .bulk-correction-layout {
    display: block;
  }
  .bulk-ai-saw {
    font-family: 'Courier Prime', monospace; font-size: 0.68rem;
    text-transform: uppercase; letter-spacing: 0.06em; color: var(--tan); margin-bottom: 4px;
  }
  .bulk-pull-hint {
    font-family: 'Courier Prime', monospace; font-size: 0.65rem;
    color: var(--red); letter-spacing: 0.03em; margin-top: 3px;
  }
  .bulk-second-pass-list { margin: 8px 0 14px; display: flex; flex-direction: column; gap: 5px; }
  .bulk-second-pass-card {
    padding: 7px 10px;
    background: var(--cream);
    border: 1px solid var(--tan);
    border-left: 3px solid var(--brown);
    border-radius: 1px;
  }
  .bulk-second-pass-title {
    font-family: 'Playfair Display', serif;
    font-size: 0.9rem; font-weight: 700; color: var(--dark);
  }
  .bulk-second-pass-author {
    font-size: 0.78rem; color: var(--brown); font-style: italic; margin-top: 1px;
  }
  .bulk-mode-cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin: 10px 0 12px;
  }
  .bulk-mode-card {
    background: var(--cream);
    border: 1px solid var(--tan);
    border-left: 3px solid var(--tan);
    border-radius: 2px;
    padding: 12px;
  }
  .bulk-mode-card.active { border-left-color: var(--gold); background: #fbf8f2; }
  .bulk-mode-title {
    font-family: 'Playfair Display', serif;
    font-size: 0.94rem;
    color: var(--dark);
    font-weight: 700;
  }
  .bulk-mode-copy {
    margin-top: 5px;
    font-size: 0.79rem;
    color: var(--brown);
    line-height: 1.45;
    min-height: 4.2em;
  }
  .bulk-mode-meta {
    margin-top: 7px;
    font-family: 'Courier Prime', monospace;
    font-size: 0.62rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--tan);
  }
  .bulk-photo-helper { font-size: 0.76rem; color: var(--brown); line-height: 1.45; margin-top: 2px; }
  .bulk-progress {
    display: none;
    margin-top: 10px;
    padding: 10px 12px;
    background: #f8f3ea;
    border: 1px solid var(--tan);
    border-radius: 2px;
  }
  .bulk-progress.is-visible { display: block; }
  .bulk-progress-top {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: baseline;
    margin-bottom: 7px;
  }
  .bulk-progress-stage {
    font-family: 'Courier Prime', monospace;
    font-size: 0.67rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--brown);
  }
  .bulk-progress-count {
    font-size: 0.75rem;
    color: var(--tan);
    font-family: 'Courier Prime', monospace;
  }
  .bulk-progress-bar {
    width: 100%;
    height: 8px;
    background: var(--parchment);
    border-radius: 999px;
    overflow: hidden;
  }
  .bulk-progress-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--gold), var(--brown));
    transition: width 0.2s ease;
  }
  .bulk-summary {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
  }
  .bulk-review-sticky {
    position: sticky;
    top: 0;
    z-index: 3;
    padding-bottom: 8px;
    margin-bottom: 8px;
    background: linear-gradient(180deg, rgba(245, 240, 232, 0.98), rgba(245, 240, 232, 0.94) 78%, rgba(245, 240, 232, 0));
  }
  .bulk-summary-pill {
    padding: 5px 9px;
    border: 1px solid var(--tan);
    border-radius: 999px;
    background: #f8f3ea;
    font-family: 'Courier Prime', monospace;
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--brown);
  }
  .bulk-correction-photo { margin: 0 0 12px; width: 112px; }
  .bulk-correction-photo img {
    width: 100%;
    display: block;
    border: 1px solid var(--tan);
    border-radius: 1px;
    background: var(--parchment);
    cursor: zoom-in;
  }
  .bulk-correction-photo-caption {
    font-family: 'Courier Prime', monospace;
    font-size: 0.62rem;
    color: var(--tan);
    margin-top: 4px;
    word-break: break-word;
  }

  .catalog-toolbar {
    margin-bottom: 14px;
    flex-wrap: wrap;
  }

  .search-input,
  .sort-select {
    border: 1px solid var(--tan);
    background: #faf7f2;
    border-radius: 1px;
    padding: 8px 12px;
  }

  .sort-select {
    width: auto;
    font-family: 'Courier Prime', monospace;
    font-size: 0.78rem;
  }

  .book-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .book-card {
    background: var(--parchment);
    border: 1px solid var(--tan);
    border-left: 4px solid var(--brown);
    padding: 12px 14px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
    box-shadow: 1px 2px 6px var(--shadow);
    cursor: pointer;
    transition: border-left-color 0.15s;
  }
  .book-card:hover { border-left-color: var(--gold); }
  .book-card.reorderable {
    position: relative;
    cursor: default;
  }
  .book-card.dragging {
    opacity: 0.45;
  }
  .book-card.drag-target-before {
    box-shadow: inset 0 4px 0 var(--gold), 1px 2px 6px var(--shadow);
  }
  .book-card.drag-target-after {
    box-shadow: inset 0 -4px 0 var(--gold), 1px 2px 6px var(--shadow);
  }
  .drag-handle {
    width: 22px;
    min-width: 22px;
    display: none;
    align-items: center;
    justify-content: center;
    align-self: stretch;
    color: var(--tan);
    cursor: grab;
    user-select: none;
    touch-action: none;
  }
  .drag-handle::before {
    content: "::";
    font-family: 'Courier Prime', monospace;
    font-size: 0.95rem;
    letter-spacing: 0.05em;
    line-height: 1;
  }
  .book-card.reorderable .drag-handle {
    display: inline-flex;
  }
  .book-card.reorderable .drag-handle:hover {
    color: var(--brown);
  }
  .book-card.reorderable .drag-handle:active {
    cursor: grabbing;
  }

  .book-cover-thumb {
    width: 80px;
    min-width: 80px;
    height: 110px;
    background: var(--tan);
    border: 1px solid #aaa;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    font-size: 1.2rem;
    color: var(--dark);
  }

  .book-cover-thumb img { width: 100%; height: 100%; object-fit: cover; }
  .book-info { flex: 1; min-width: 0; }

  .book-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.02rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--dark);
  }

  .book-author {
    font-style: italic;
    font-size: 0.9rem;
    color: var(--brown);
    margin-top: 2px;
  }

  .book-meta,
  .book-notes,
  .book-personal-notes,
  .book-research-meta,
  .rating-display,
  .briefing-list,
  .questions-list {
    font-size: 0.84rem;
  }

  .book-meta,
  .book-research-meta {
    margin-top: 6px;
    color: #3a6a90;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-family: 'Courier Prime', monospace;
    font-size: 0.72rem;
  }
  .book-research-meta.pending { color: var(--brown); opacity: 0.75; }

  .book-notes {
    margin-top: 6px;
    border-top: 1px dashed var(--tan);
    padding-top: 6px;
    color: #285078;
    font-style: italic;
  }

  .book-personal-notes {
    margin-top: 6px;
    color: var(--ink);
    line-height: 1.4;
  }

  .rating-display {
    margin-top: 6px;
    color: var(--gold);
    font-family: 'Courier Prime', monospace;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .star-rating-widget {
    display: flex;
    gap: 4px;
    align-items: center;
    margin-top: 2px;
  }
  .star-rating-widget button {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    color: var(--tan);
    transition: color 0.1s, transform 0.1s;
  }
  .star-rating-widget button:hover,
  .star-rating-widget button.filled { color: var(--gold); }
  .star-rating-widget button:hover { transform: scale(1.15); }
  .star-rating-widget .clear-rating {
    font-size: 0.75rem;
    color: var(--tan);
    font-family: var(--mono);
    margin-left: 6px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    display: none;
  }
  .star-rating-widget .clear-rating.visible { display: inline; }

  /* ── Cover source modal ── */
  .cover-source-modal { width: 480px; max-width: 96vw; max-height: 85vh; display: flex; flex-direction: column; }
  .cover-source-modal .modal-title { font-family: 'Playfair Display', serif; font-size: 1.15rem; color: var(--dark); margin-bottom: 4px; }
  .cover-search-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 8px; overflow-y: auto; max-height: 55vh; padding: 4px 2px; }
  .cover-search-item { aspect-ratio: 2/3; background: var(--tan); border: 1px solid var(--tan); border-radius: 2px; overflow: hidden; cursor: pointer; transition: border-color 0.15s; }
  .cover-search-item:hover { border-color: var(--brown); }
  .cover-search-item img { width: 100%; height: 100%; object-fit: cover; display: block; }

  /* ── Cover replace overlay ── */
  .book-detail-cover { position: relative; }
  .cover-replace-btn {
    position: absolute;
    bottom: 4px;
    right: 4px;
    background: rgba(0,0,0,0.55);
    color: #fff;
    border: none;
    border-radius: 2px;
    padding: 3px 6px;
    font-size: 0.6rem;
    font-family: 'Courier Prime', monospace;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.15s;
    pointer-events: none;
  }
  .book-detail-cover:hover .cover-replace-btn {
    opacity: 1;
    pointer-events: auto;
  }

  /* ── Clickable cover placeholder ── */
  .cover-add-btn {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.15s;
  }
  .cover-add-btn:hover { opacity: 1; }
  .cover-add-label {
    font-size: 0.58rem;
    color: var(--brown);
    font-family: 'Courier Prime', monospace;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    text-align: center;
  }

  /* ── Book Detail Panel ── */
  .book-detail-header {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 14px 0 12px;
    border-bottom: 1px solid var(--tan);
    margin-bottom: 10px;
  }
  .book-detail-cover {
    width: 90px;
    min-width: 90px;
    height: 126px;
    background: var(--tan);
    border: 1px solid #aaa;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  .book-detail-cover img { width: 100%; height: 100%; object-fit: cover; }
  .book-detail-info { flex: 1; min-width: 0; }
  .book-detail-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--dark);
  }
  .book-detail-author {
    font-style: italic;
    font-size: 1.0rem;
    color: var(--brown);
    margin-top: 3px;
  }
  .book-detail-meta {
    margin-top: 6px;
    color: #3a6a90;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    font-family: 'Courier Prime', monospace;
    font-size: 0.78rem;
  }
  .book-detail-notes {
    margin-top: 8px;
    font-size: 0.88rem;
    color: #285078;
    font-style: italic;
    border-top: 1px dashed var(--tan);
    padding-top: 6px;
  }
  .book-detail-personal-notes {
    margin-top: 6px;
    font-size: 0.88rem;
    color: var(--ink);
    line-height: 1.5;
  }
  .book-detail-action-row {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    padding: 8px 0;
    border-bottom: 1px solid var(--tan);
    margin-bottom: 10px;
  }
  .book-photo-section {
    border-bottom: 1px solid var(--tan);
    margin-bottom: 10px;
    padding: 0 0 12px;
  }
  .book-photo-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 8px;
  }
  .book-photo-section-header-main {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
  }
  .book-photo-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
  }
  .book-photo-section-title {
    font-family: 'Playfair Display', serif;
    color: var(--dark);
    font-size: 1rem;
  }
  .book-photo-add-label-compact { display: none; }
  body.ui-compact .book-photo-add-label-full,
  body.ui-icons .book-photo-add-label-full { display: none; }
  body.ui-compact .book-photo-add-label-compact,
  body.ui-icons .book-photo-add-label-compact { display: inline; }
  .book-photo-helper {
    font-size: 0.74rem;
    color: var(--brown);
  }
  .book-photo-toggle {
    min-width: 78px;
  }
  body.ui-compact .book-photo-helper,
  body.ui-icons .book-photo-helper {
    display: none;
  }
  .book-photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
    gap: 8px;
  }
  .book-photo-card {
    position: relative;
    border: 1px solid rgba(140, 112, 78, 0.26);
    background: #f7f1e5;
    padding: 4px;
    cursor: pointer;
  }
  .book-photo-card img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    display: block;
    background: var(--tan);
  }
  .book-photo-card-meta {
    padding: 6px 2px 2px;
    display: flex;
    flex-direction: column;
    gap: 2px;
  }
  .book-photo-card-type {
    font-family: 'Courier Prime', monospace;
    font-size: 0.66rem;
    color: #3a6a90;
    text-transform: uppercase;
  }
  .book-photo-card-caption {
    font-size: 0.74rem;
    color: var(--brown);
    line-height: 1.25;
  }
  .book-photo-delete-btn {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 24px;
    height: 24px;
    border: 1px solid rgba(255,255,255,0.7);
    background: rgba(56, 32, 19, 0.82);
    color: #fff;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    line-height: 1;
  }
  .book-photo-edit-btn {
    position: absolute;
    top: 6px;
    right: 34px;
    width: 24px;
    height: 24px;
    border: 1px solid rgba(255,255,255,0.7);
    background: rgba(56, 32, 19, 0.82);
    color: #fff;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.82rem;
    line-height: 1;
  }
  .book-photo-empty {
    font-size: 0.82rem;
    color: var(--brown);
    font-style: italic;
  }
  .book-photo-type-list {
    display: grid;
    gap: 8px;
    margin-top: 8px;
  }
  .book-photo-type-option {
    display: grid;
    grid-template-columns: 18px minmax(0, 1fr);
    align-items: start;
    gap: 8px;
    width: 100%;
    box-sizing: border-box;
    font-size: 0.84rem;
    color: var(--ink);
    line-height: 1.35;
    text-transform: none;
    letter-spacing: normal;
    margin-bottom: 0;
  }
  .book-photo-type-option input[type="radio"] {
    margin: 0;
    margin-top: 0.12em;
    flex: 0 0 auto;
  }
  .book-photo-meta-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 14px;
  }
  .cover-lightbox-nav {
    width: 42px;
    height: 42px;
    padding: 0;
    border: 1px solid rgba(255,255,255,0.65);
    background: rgba(26, 51, 85, 0.88);
    color: #fff;
    font-size: 1.15rem;
    line-height: 1;
    border-radius: 999px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.35);
  }
  .cover-lightbox-nav:hover:not(:disabled) {
    background: rgba(44, 78, 116, 0.96);
    border-color: rgba(255,255,255,0.9);
  }
  .cover-lightbox-nav:disabled {
    opacity: 0.35;
    cursor: default;
  }

  .condition-badge {
    display: inline-block;
    font-family: 'Courier Prime', monospace;
    font-size: 0.65rem;
    padding: 1px 6px;
    border-radius: 1px;
    text-transform: uppercase;
  }

  .cond-fine { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
  .cond-good { background: #d1ecf1; color: #0c5460; border: 1px solid #bee5eb; }
  .cond-fair { background: #fff3cd; color: #856404; border: 1px solid #ffeeba; }
  .cond-poor { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
  .status-want-to-read { background: #dce9f5; color: #1e4d75; border: 1px solid #aac9e4; }
  .status-currently-reading { background: #d9ecff; color: #184d7a; border: 1px solid #b8d8f5; }
  .status-read { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
  .status-did-not-finish { background: #f8d7da; color: #721c24; border: 1px solid #f1bfc5; }

  .empty-state,
  .briefing-empty {
    text-align: center;
    padding: 42px 24px;
    color: var(--tan);
  }
  .empty-state-actions {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 14px;
  }

  .empty-state p,
  .briefing-empty p {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-size: 1.05rem;
  }
  .research-panel {
    position: sticky;
    top: 24px;
  }

  .research-header {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    align-items: start;
    margin-bottom: 10px;
  }

  .research-header h2 {
    font-family: 'Playfair Display', serif;
    font-size: 1.3rem;
    color: var(--dark);
  }

  .research-subtitle {
    color: var(--brown);
    font-style: italic;
  }

  .briefing-scroll {
    max-height: calc(100vh - 360px);
    overflow: auto;
    padding-right: 4px;
  }

  .briefing-section {
    border-top: 1px dashed var(--tan);
    padding-top: 12px;
    margin-top: 12px;
  }

  .briefing-section h3 {
    font-family: 'Courier Prime', monospace;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--brown);
    margin-bottom: 8px;
  }

  .briefing-section p {
    line-height: 1.5;
    color: var(--ink);
  }

  .briefing-list,
  .questions-list {
    padding-left: 20px;
    line-height: 1.45;
  }

  .briefing-list li,
  .questions-list li { margin-bottom: 6px; }

  .modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 100;
    align-items: center;
    justify-content: center;
  }

  .modal-overlay.open { display: flex; }

  .modal {
    background: var(--parchment);
    border: 2px solid var(--brown);
    padding: 20px;
    width: 360px;
    max-width: 95vw;
    border-radius: 2px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  }
  .account-settings-modal {
    width: 820px;
    max-width: 95vw;
    max-height: min(88vh, 760px);
    overflow-y: auto;
  }
  .shared-books-manager-grid {
    display: grid;
    grid-template-columns: minmax(260px, 1fr) minmax(320px, 1.15fr);
    gap: 16px;
    align-items: start;
  }
  .shared-books-manager-list,
  .shared-books-manager-detail {
    min-width: 0;
  }
  .account-settings-section {
    border-top: 1px solid var(--tan);
    padding-top: 16px;
    margin-top: 16px;
  }
  .account-settings-copy {
    font-size: 0.82rem;
    color: #666;
    line-height: 1.5;
  }
  .admin-access-status {
    margin-top: 10px;
    padding: 10px 12px;
    border: 1px solid var(--tan);
    background: #f8f3ea;
    border-radius: 2px;
    font-size: 0.82rem;
    color: var(--ink);
  }
  .admin-access-status.warning {
    border-color: #c8a4a4;
    background: #fbefef;
    color: var(--red);
  }
  .admin-access-status.success {
    border-color: #b6d1bf;
    background: #eef7f1;
    color: var(--green);
  }

  .modal h3 {
    font-family: 'Playfair Display', serif;
    margin-bottom: 12px;
    color: var(--dark);
  }

  /* About modal must sit above the auth overlay (z-index 200) */
  #aboutModal { z-index: 250; }
  /* Share dialog can be opened from Account Settings, so it must stack above it. */
  #shareDialog { z-index: 260; }
  /* Lightbox must sit above other modals (e.g. cover source modal) */
  #coverLightbox { z-index: 300; }

  /* ── Wikipedia Modal ── */
  .wiki-modal {
    width: 580px;
    max-width: 95vw;
    max-height: 88vh;
    overflow-y: auto;
    padding: 0;
    border: 2px solid var(--brown);
    position: relative;
  }

  .wiki-modal-header {
    padding: 18px 44px 14px 18px;
    border-bottom: 1px solid var(--tan);
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background: #f5edd8;
  }

  .wiki-modal-thumb {
    flex-shrink: 0;
    width: 72px;
    height: 100px;
    object-fit: cover;
    border: 1px solid var(--tan);
    border-radius: 2px;
    box-shadow: 2px 2px 6px rgba(0,0,0,0.15);
  }

  .wiki-modal-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.1rem;
    color: var(--dark);
    margin-bottom: 4px;
    line-height: 1.3;
  }

  .wiki-modal-description {
    font-family: 'EB Garamond', serif;
    font-size: 0.88rem;
    color: var(--brown);
    font-style: italic;
  }

  .wiki-modal-body {
    padding: 16px 20px;
    font-family: 'EB Garamond', serif;
    font-size: 0.97rem;
    line-height: 1.7;
    color: var(--ink);
  }

  .wiki-modal-body p { margin: 0 0 10px; }
  .wiki-modal-body p:last-child { margin-bottom: 0; }

  .wiki-modal-footer {
    padding: 12px 18px;
    border-top: 1px solid var(--tan);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
    background: #f5edd8;
  }

  .wiki-attribution {
    font-family: 'Courier Prime', monospace;
    font-size: 0.68rem;
    color: var(--brown);
    opacity: 0.75;
  }

  .wiki-notice {
    padding: 7px 18px;
    background: #f0e4c8;
    border-bottom: 1px solid var(--tan);
    font-family: 'EB Garamond', serif;
    font-size: 0.84rem;
    color: var(--brown);
    font-style: italic;
  }

  .wiki-not-found {
    padding: 36px 20px;
    text-align: center;
    font-family: 'EB Garamond', serif;
  }

  /* ── About Modal ── */
  .about-modal {
    width: 520px;
    max-width: 95vw;
    max-height: 88vh;
    overflow-y: auto;
    padding: 0;
    border: 2px solid var(--gold);
  }

  .about-header {
    background: #1a3355;
    padding: 28px 28px 20px;
    text-align: center;
    position: relative;
    border-bottom: 3px solid var(--gold);
  }

  .about-header img {
    height: 120px;
    width: auto;
    display: block;
    margin: 0 auto 14px;
    background: #fff;
    padding: 10px 16px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.25);
  }

  .about-tagline {
    color: var(--cream);
    font-family: 'EB Garamond', Georgia, serif;
    font-style: italic;
    font-size: 1.05rem;
    margin: 0;
    letter-spacing: 0.02em;
  }

  .about-close {
    position: absolute;
    top: 12px;
    right: 14px;
    background: none;
    border: none;
    color: var(--tan);
    font-size: 1.1rem;
    cursor: pointer;
    line-height: 1;
    padding: 4px 6px;
  }
  .about-close:hover { color: var(--cream); }

  .about-body {
    padding: 24px 28px 28px;
  }

  .about-intro {
    font-size: 1rem;
    line-height: 1.65;
    color: var(--ink);
    margin-bottom: 22px;
    border-left: 3px solid var(--gold);
    padding-left: 14px;
  }

  .about-section-title {
    font-family: 'Courier Prime', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--brown);
    margin-bottom: 14px;
    padding-bottom: 6px;
    border-bottom: 1px dashed var(--tan);
  }

  .about-features {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 22px;
  }

  .about-feature {
    display: flex;
    gap: 14px;
    align-items: flex-start;
  }

  .about-feature-icon {
    font-size: 1.3rem;
    line-height: 1;
    flex-shrink: 0;
    margin-top: 2px;
  }

  .about-feature strong {
    font-family: 'Playfair Display', serif;
    font-size: 0.97rem;
    color: var(--dark);
    display: block;
    margin-bottom: 2px;
  }

  .about-feature p {
    font-size: 0.88rem;
    color: #285078;
    line-height: 1.5;
    margin: 0;
  }

  .about-footer {
    margin-top: 6px;
    padding-top: 14px;
    border-top: 1px dashed var(--tan);
    text-align: center;
    font-family: 'Courier Prime', monospace;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--brown);
  }

  .about-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px dashed var(--tan);
    margin-bottom: 14px;
  }

  .about-more-modal {
    width: 620px;
    max-width: 95vw;
    max-height: 90vh;
    overflow-y: auto;
    padding: 0;
    border: 2px solid var(--gold);
  }

  .about-more-section-title {
    font-family: 'Courier Prime', monospace;
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--brown);
    margin: 22px 0 9px;
    padding-bottom: 6px;
    border-bottom: 1px dashed var(--tan);
  }
  .about-more-section-title:first-child { margin-top: 0; }

  .about-more-list {
    list-style: none;
    padding: 0;
    margin: 0 0 4px;
    display: flex;
    flex-direction: column;
    gap: 7px;
  }

  .about-more-list li {
    font-size: 0.88rem;
    color: var(--ink);
    line-height: 1.55;
    padding-left: 18px;
    position: relative;
  }

  .about-more-list li::before {
    content: "◆";
    position: absolute;
    left: 0;
    color: var(--gold);
    font-size: 0.48rem;
    top: 5px;
  }

  #cameraFeed {
    width: 100%;
    border: 2px solid var(--tan);
    background: #000;
    display: block;
    margin-bottom: 10px;
    max-height: 240px;
    object-fit: cover;
  }

  .scan-line {
    height: 2px;
    background: rgba(63, 126, 181, 0.7);
    width: 100%;
    animation: scanAnim 1.5s ease-in-out infinite;
    margin: -32px 0 20px;
    position: relative;
  }

  @keyframes scanAnim {
    0%, 100% { transform: translateY(-80px); opacity: 0.3; }
    50% { transform: translateY(80px); opacity: 0.9; }
  }

  /* Hidden by default; shown via media query on mobile */
  .mobile-nav { display: none; }

  /* Intermediate desktop: 1024-1280px gets 2-column instead of 3 */
  @media (min-width: 1024px) and (max-width: 1280px) {
    .main { grid-template-columns: 340px minmax(0, 1fr); }
    .research-panel { grid-column: 1 / -1; position: static; }
    .briefing-scroll { max-height: none; }
  }

  /* Mobile nav layout: phones, landscape phones, tablets (< 1024px) */
  @media (max-width: 1023px) {
    /* All rem values in this stylesheet are font-size only — safe to scale root */
    html { font-size: 18px; }

    /* Header: tighten padding, hide subtitle to reduce clutter */
    header { padding: 16px 16px 14px; }
    .subtitle { display: none; }
    .briefing-back-btn { display: inline-flex; align-items: center; }

    /* Layout: single column, leave room at bottom for mobile nav */
    .main {
      grid-template-columns: 1fr;
      padding: 16px;
      padding-bottom: calc(72px + env(safe-area-inset-bottom));
    }
    body { padding-bottom: 0; } /* mobile-nav handles safe area */

    /* Panel switching: only the active panel is shown */
    .main > div { display: none; }
    .main > div.mobile-active { display: block; }

    /* Mobile bottom nav */
    .mobile-nav {
      display: flex;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: var(--dark);
      border-top: 2px solid var(--gold);
      z-index: 50;
      padding-bottom: env(safe-area-inset-bottom);
    }
    .mobile-nav-btn {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 4px;
      padding: 10px 8px;
      background: none;
      border: none;
      color: var(--tan);
      font-family: 'Courier Prime', monospace;
      font-size: 0.62rem;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      cursor: pointer;
      min-height: 56px;
    }
    .mobile-nav-btn.active { color: var(--gold); }

    .catalog-toolbar { flex-direction: column; align-items: stretch; }
    .sort-select { width: 100%; }

    /* Touch targets — minimum 44px height across all interactive elements */
    .btn { min-height: 44px; font-size: 0.9rem; }
    .btn-sm { min-height: 40px; padding: 8px 12px; font-size: 0.82rem; }
    .filter-pill { min-height: 40px; padding: 8px 14px; font-size: 0.88rem; }
    .tab { min-height: 44px; padding: 10px 14px; font-size: 0.88rem; }

    /* Larger text sizes for small-screen readability (font-size only, no layout dims) */
    label { font-size: 0.85rem; }
    input, select, textarea { font-size: 1rem; }
    .book-title { font-size: 1.1rem; }
    .book-author { font-size: 1rem; }
    .book-meta { font-size: 0.82rem; }
    .stats-bar { font-size: 0.82rem; }
    .section-label { font-size: 0.82rem; }
    .panel-header { font-size: 1.05rem; }
    .search-result-title { font-size: 1.05rem; }
    .search-result-meta { font-size: 0.85rem; }
    .mobile-nav-btn { font-size: 0.72rem; }

    /* ISBN row: keep on one line so buttons don't orphan to a half-empty line */
    .button-row { flex-wrap: wrap; }
    .add-chooser,
    .single-add-chooser,
    .bulk-mode-cards {
      grid-template-columns: 1fr;
    }
    .sticky-mobile-actions {
      position: sticky;
      bottom: calc(8px + env(safe-area-inset-bottom));
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      padding: 12px;
      background: rgba(245, 240, 232, 0.98);
      border: 1px solid rgba(166, 133, 83, 0.8);
      border-radius: 2px;
      box-shadow: 0 10px 24px rgba(21, 45, 69, 0.18);
      z-index: 8;
    }
    .bulk-action-meta {
      display: block;
      width: 100%;
      font-family: 'Courier Prime', monospace;
      font-size: 0.7rem;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      color: var(--brown);
    }
    #bulkActionRow.sticky-mobile-actions .btn,
    #reviewActions.sticky-mobile-actions .btn,
    #bulkCorrActions.sticky-mobile-actions .btn {
      flex: 1 1 0;
    }
    #bulkActionRow.sticky-mobile-actions .btn-primary,
    #bulkCorrActions.sticky-mobile-actions .btn-primary {
      flex-basis: 100%;
    }
    .bulk-toggle-btn {
      width: 100%;
      height: 38px;
      font-size: 0.95rem;
    }
    .bulk-book-card {
      display: grid;
      grid-template-columns: 54px minmax(0, 1fr);
      gap: 10px;
      align-items: start;
      padding: 12px;
    }
    .bulk-book-thumb {
      width: 54px;
      min-width: 54px;
      height: 74px;
      grid-row: 1;
      grid-column: 1;
    }
    .bulk-book-info {
      grid-column: 2;
    }
    .bulk-book-title {
      white-space: normal;
      font-size: 0.96rem;
    }
    .bulk-book-author {
      white-space: normal;
      font-size: 0.82rem;
      line-height: 1.35;
    }
    .bulk-book-meta,
    .match-reason-detail {
      font-size: 0.72rem;
      line-height: 1.45;
    }
    .bulk-cover-choice .cover-choice-thumb img {
      width: 50px;
      height: 68px;
    }
    .bulk-toggle-btns {
      grid-column: 1 / -1;
      flex-direction: row;
      gap: 8px;
      margin-top: 2px;
    }
    .mobile-review-progress {
      display: flex;
      justify-content: space-between;
      gap: 10px;
      align-items: center;
      position: sticky;
      top: 0;
      z-index: 6;
      margin: 0 0 10px;
      padding: 8px 10px;
      background: rgba(251, 248, 242, 0.98);
      border: 1px solid rgba(166, 133, 83, 0.55);
      border-radius: 2px;
      box-shadow: 0 4px 14px rgba(21, 45, 69, 0.08);
      font-family: 'Courier Prime', monospace;
      font-size: 0.68rem;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      color: var(--brown);
    }
    .bulk-correction-layout {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .cover-replace-btn {
      opacity: 1;
      pointer-events: auto;
      bottom: 6px;
      right: 6px;
      padding: 5px 8px;
      font-size: 0.66rem;
      background: rgba(21, 45, 69, 0.88);
      box-shadow: 0 2px 8px rgba(0,0,0,0.18);
    }
    .bulk-correction-photo {
      width: 100%;
      max-width: none;
      margin: 0 0 2px;
    }
    .bulk-correction-photo img {
      max-height: 42vh;
      width: 100%;
      object-fit: contain;
    }
    #bulkCorrSearchResults .search-result-item {
      padding: 12px;
      min-height: 78px;
      align-items: center;
    }
    #bulkCorrSearchResults .bulk-book-thumb {
      width: 46px;
      min-width: 46px;
      height: 64px;
    }
    #bulkCorrSearchResults .search-result-meta {
      margin-top: 5px;
    }
  }

  /* Portrait phone: count badge drops to its own second line so the
     user avatar stays on the same row as the logo and title */
  @media (max-width: 480px) {
    header { padding: 10px 16px 0; gap: 10px; }
    header h1 { font-size: 1.7rem; }
    .count-badge {
      order: 10;
      flex-basis: 100%;
      text-align: center;
      margin: 0;
      border-left: none;
      border-right: none;
      border-radius: 0;
      border-top: 1px dashed rgba(63, 126, 181, 0.35);
      border-bottom: none;
      padding: 5px 0 6px;
      font-size: 0.68rem;
      color: rgba(255, 255, 255, 0.75);
    }

    .review-section {
      padding: 10px;
    }

    .review-card-inner,
    .review-card-inner.has-cover-picker {
      flex-direction: column;
      align-items: stretch;
      gap: 10px;
    }

    .review-cover {
      width: min(128px, 42vw);
      min-width: 0;
      height: auto;
      aspect-ratio: 3 / 4;
      align-self: center;
    }

    .review-card-body {
      width: 100%;
    }

    .cover-choice {
      width: 100%;
      justify-content: center;
      flex-wrap: wrap;
    }

    .cover-choice-thumb img {
      width: 58px;
      height: 82px;
    }

    .review-title,
    .review-meta,
    .review-source {
      text-align: center;
    }

    .review-actions {
      justify-content: stretch;
    }

    .review-actions .btn {
      flex: 1 1 100%;
    }
  }

  @media (max-width: 760px) {
    .shared-books-manager-grid {
      grid-template-columns: 1fr;
    }
  }

  .stats-bar {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 10px;
    font-family: 'Courier Prime', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--brown);
  }

  .stats-bar strong { color: var(--dark); }

  .filter-pills {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 10px;
  }

  .filter-pill {
    padding: 4px 12px;
    border: 1px solid var(--tan);
    background: transparent;
    color: var(--brown);
    font-family: 'Courier Prime', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    cursor: pointer;
    border-radius: 2px;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
  }

  .filter-pill:hover { border-color: var(--brown); }

  .filter-pill.active {
    background: var(--brown);
    color: var(--cream);
    border-color: var(--brown);
  }

  .catalog-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 10px;
  }

  .data-menu-wrap { position: relative; display: inline-block; }

  .data-menu {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 4px);
    background: var(--parchment);
    border: 1px solid var(--tan);
    box-shadow: 3px 4px 14px var(--shadow);
    z-index: 30;
    min-width: 160px;
    border-radius: 2px;
  }
  .data-menu.open { display: block; }

  .data-menu button,
  .data-menu label {
    display: block;
    width: 100%;
    text-align: left;
    padding: 10px 14px;
    background: none;
    border: none;
    border-bottom: 1px solid var(--tan);
    cursor: pointer;
    font-family: 'Courier Prime', monospace;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ink);
    box-sizing: border-box;
  }
  .data-menu button:last-child,
  .data-menu label:last-child { border-bottom: none; }
  .data-menu button:hover,
  .data-menu label:hover { background: #f0e8d4; }

  .account-menu-wrap { position: relative; }

  .account-menu {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    background: var(--parchment);
    border: 1px solid var(--tan);
    box-shadow: 3px 4px 14px var(--shadow);
    z-index: 60;
    min-width: 170px;
    border-radius: 2px;
  }
  .account-menu.open { display: block; }
  .account-menu button {
    display: block;
    width: 100%;
    text-align: left;
    padding: 10px 14px;
    background: none;
    border: none;
    border-bottom: 1px solid var(--tan);
    cursor: pointer;
    font-family: 'Courier Prime', monospace;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ink);
    box-sizing: border-box;
  }
  .account-menu button:last-child { border-bottom: none; }
  .account-menu button:hover { background: #f0e8d4; }
  .account-menu button.danger { color: #b33; }
  .account-menu button.danger:hover { background: #fde8e8; }

  #userEmailIcon {
    display: none;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--tan);
    cursor: pointer;
    opacity: 0.85;
    flex-shrink: 0;
  }
  #userEmailIcon:hover { opacity: 1; border-color: var(--gold); }
  #userEmailText {
    display: none;
    color: var(--tan);
    font-size: 0.78rem;
    font-family: 'Courier Prime', monospace;
    cursor: pointer;
  }
  #userEmailText:hover { color: var(--cream); }

  .auth-overlay {
    position: fixed;
    inset: 0;
    background: var(--cream);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .auth-overlay.is-hidden {
    display: none !important;
  }

  .auth-box {
    text-align: center;
    max-width: 360px;
    width: 90%;
    padding: 40px 32px;
    background: var(--parchment);
    border: 1px solid var(--tan);
    border-radius: 2px;
    box-shadow: 3px 3px 16px var(--shadow);
  }

  .auth-box h1 {
    font-family: 'Playfair Display', serif;
    font-size: 2.2rem;
    color: var(--dark);
    margin-bottom: 6px;
  }

  .auth-box .auth-subtitle {
    font-family: 'Courier Prime', monospace;
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--brown);
    margin-bottom: 28px;
  }

  #authError {
    color: var(--red);
    font-size: 0.84rem;
    margin-top: 12px;
    min-height: 20px;
    font-style: italic;
  }

  /* ── Guest mode banner ────────────────────────────────────── */
  #guestBanner {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 7px 16px;
    background: #fffbe6;
    border-bottom: 1px solid #e8c840;
    font-family: 'Courier Prime', monospace;
    font-size: 0.78rem;
    color: var(--dark);
    flex-wrap: wrap;
  }
  #guestBanner .guest-banner-text { flex: 1; min-width: 0; }
  #guestBanner .guest-banner-btn  { white-space: nowrap; flex-shrink: 0; }

  .book-card.selected {
    border-left-color: var(--gold);
    background: rgba(212, 175, 55, 0.08);
    box-shadow: 2px 3px 10px rgba(101, 67, 33, 0.18);
  }

  /* ── Selection mode ── */
  .book-card.selection-checked {
    border-left-color: var(--gold);
    background: rgba(212, 175, 55, 0.12);
    box-shadow: 0 0 0 2px var(--gold), 1px 2px 6px var(--shadow);
  }
  .book-card.in-selection-mode { cursor: default; }
  .select-indicator {
    width: 22px;
    min-width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid var(--tan);
    background: var(--parchment);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--parchment);
    flex-shrink: 0;
    align-self: center;
    transition: background 0.12s, border-color 0.12s;
  }
  .book-card.selection-checked .select-indicator {
    background: var(--gold);
    border-color: var(--gold);
  }
  #selectModeBtn.select-mode-active {
    background: var(--brown);
    color: var(--cream);
    border-color: var(--brown);
  }
  .catalog-actions { gap: 6px; }

  .selection-action-bar {
    position: sticky;
    bottom: 0;
    background: var(--brown);
    color: var(--cream);
    padding: 10px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    z-index: 20;
    border-top: 2px solid var(--dark);
    font-family: 'Courier Prime', monospace;
    font-size: 0.78rem;
  }
  @media (max-width: 1023px) {
    .selection-action-bar { bottom: calc(72px + env(safe-area-inset-bottom)); }
  }
  .selection-count { font-weight: 700; letter-spacing: 0.05em; white-space: nowrap; }
  .selection-bar-actions { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
  .selection-bar-btn {
    padding: 5px 10px;
    border: 1px solid rgba(255,255,255,0.35);
    background: rgba(255,255,255,0.12);
    color: var(--cream);
    font-family: 'Courier Prime', monospace;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    border-radius: 2px;
    transition: background 0.12s;
  }
  .selection-bar-btn:hover { background: rgba(255,255,255,0.22); }
  .selection-bar-btn.danger { border-color: rgba(180,60,40,0.6); color: #f5b0a0; }
  .selection-bar-btn.danger:hover { background: rgba(180,60,40,0.35); }

  .move-menu-wrap { position: relative; display: inline-block; }
  .move-menu {
    position: absolute;
    bottom: calc(100% + 6px);
    left: 0;
    background: var(--parchment);
    border: 1px solid var(--tan);
    box-shadow: 3px 4px 14px var(--shadow);
    z-index: 40;
    min-width: 160px;
    border-radius: 2px;
  }
  .move-menu button {
    display: block;
    width: 100%;
    text-align: left;
    padding: 10px 14px;
    background: none;
    border: none;
    border-bottom: 1px solid var(--tan);
    cursor: pointer;
    font-family: 'Courier Prime', monospace;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ink);
    box-sizing: border-box;
  }
  .move-menu button:last-child { border-bottom: none; }
  .move-menu button:hover { background: #f0e8d4; }

  #toastNotification {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark);
    color: var(--cream);
    padding: 9px 18px;
    border-radius: 2px;
    font-family: 'Courier Prime', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    z-index: 9999;
    pointer-events: auto;
    opacity: 0;
    transition: opacity 0.25s;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 10px;
  }
  #toastNotification.visible { opacity: 1; }
  .toast-action-btn {
    border: 1px solid rgba(255,255,255,0.35);
    background: rgba(255,255,255,0.08);
    color: var(--cream);
    font-family: 'Courier Prime', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 5px 10px;
    border-radius: 2px;
    cursor: pointer;
  }
  .toast-action-btn:hover {
    background: rgba(255,255,255,0.16);
  }
  .search-result-cue {
    margin-top: 5px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
  }

  @keyframes shimmer {
    0%   { background-position: -600px 0; }
    100% { background-position: 600px 0; }
  }

  .skeleton {
    background: linear-gradient(90deg, var(--parchment) 25%, #e8d9c0 50%, var(--parchment) 75%);
    background-size: 600px 100%;
    animation: shimmer 1.4s ease infinite;
    border-radius: 2px;
  }

  .skeleton-card {
    background: var(--parchment);
    border: 1px solid var(--tan);
    border-left: 4px solid var(--tan);
    padding: 12px 14px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
    box-shadow: 1px 2px 6px var(--shadow);
  }

  .skeleton-thumb { width: 52px; min-width: 52px; height: 72px; }

  .skeleton-body { flex: 1; padding-top: 4px; }

  .skeleton-line { height: 13px; margin-bottom: 9px; }

  .book-cover-thumb svg { color: var(--brown); opacity: 0.45; }

  /* ── Photo Lookup ── */
  .photo-lookup-section {
    margin-top: 8px;
  }
  .single-add-chooser {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 12px;
  }
  .single-add-card {
    background: #f8f3ea;
    border: 1px solid var(--tan);
    border-radius: 2px;
    padding: 12px;
    cursor: pointer;
    text-align: left;
    transition: border-color 0.15s, background 0.15s, transform 0.15s;
  }
  .single-add-card:hover { background: #fffdf8; border-color: var(--brown); }
  .single-add-card.active {
    background: var(--cream);
    border-color: var(--brown);
    box-shadow: inset 0 0 0 1px rgba(46, 92, 133, 0.08);
  }
  .single-add-title {
    font-family: 'Playfair Display', serif;
    font-size: 0.95rem;
    color: var(--dark);
    font-weight: 700;
  }
  .single-add-copy {
    margin-top: 4px;
    font-size: 0.8rem;
    line-height: 1.45;
    color: var(--brown);
  }
  .single-add-kicker {
    margin-top: 7px;
    font-family: 'Courier Prime', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--tan);
  }
  .single-add-pane {
    padding: 12px;
    background: var(--cream);
    border: 1px solid var(--tan);
    border-radius: 2px;
  }
  .sticky-mobile-actions {
    margin-top: 10px;
  }

  .photo-lookup-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
  }

  .photo-lookup-row .helper-text {
    font-size: 0.78rem;
    color: var(--brown);
    font-style: italic;
  }

  .photo-preview-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: flex-end;
    margin-top: 4px;
  }

  .photo-thumb {
    position: relative;
    width: 64px;
    height: 80px;
  }

  .photo-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border: 1px solid var(--tan);
    border-radius: 2px;
  }

  .photo-thumb.selected-cover img {
    border-color: var(--gold);
    box-shadow: 0 0 0 1px rgba(184, 134, 11, 0.35);
  }

  .photo-thumb button {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 18px;
    height: 18px;
    border: 1px solid var(--brown);
    background: var(--parchment);
    color: var(--red);
    font-size: 10px;
    line-height: 1;
    padding: 0;
    border-radius: 50%;
    cursor: pointer;
  }

  .photo-thumb .photo-cover-btn {
    top: auto;
    right: 2px;
    bottom: -10px;
    width: auto;
    min-width: 42px;
    height: 18px;
    padding: 0 5px;
    color: var(--brown);
    font-size: 9px;
    border-radius: 999px;
  }

  /* ── Review Section ── */
  .review-section {
    margin-top: 12px;
    padding: 12px;
    background: var(--cream);
    border: 1px solid var(--tan);
    border-left: 3px solid var(--green);
    border-radius: 2px;
  }

  .review-card-inner {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    min-width: 0;
  }
  .review-card-inner.has-cover-picker {
    flex-direction: column;
  }

  .review-card-body {
    flex: 1;
    min-width: 0;
    width: 100%;
  }

  .review-cover {
    width: 60px;
    min-width: 60px;
    height: 80px;
    object-fit: cover;
    border: 1px solid var(--tan);
  }

  /* Cover source picker in review card */
  .cover-choice { display: flex; gap: 8px; flex-shrink: 0; }
  .cover-choice-thumb {
    display: flex; flex-direction: column; align-items: center; gap: 4px;
    cursor: pointer; opacity: 0.45; transition: opacity 0.15s;
    -webkit-touch-callout: none; /* suppress iOS "Save Image" context menu */
    -webkit-user-select: none; user-select: none;
    touch-action: manipulation; /* prevent double-tap zoom interfering */
  }
  .cover-choice-thumb.selected { opacity: 1; outline: 2px solid var(--gold); outline-offset: 2px; }
  .cover-choice-thumb:hover { opacity: 0.8; }
  .cover-choice-thumb img {
    width: 52px; height: 72px; object-fit: cover;
    border: 1px solid var(--tan); display: block;
    pointer-events: none; /* let the parent div handle all pointer events */
  }
  .cover-choice-thumb span {
    font-size: 0.58rem; font-family: 'Courier Prime', monospace;
    color: var(--brown); text-align: center; line-height: 1.2;
  }
  .cover-choice-hint {
    font-size: 0.62rem; font-family: 'Courier Prime', monospace;
    color: var(--brown); opacity: 0.6; text-align: center;
    margin: 5px 0 0; letter-spacing: 0.01em;
  }

  .review-title {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--dark);
    margin-bottom: 4px;
    overflow-wrap: break-word;
    word-break: normal;
  }

  .review-meta {
    font-size: 0.82rem;
    color: var(--brown);
    margin-bottom: 2px;
    overflow-wrap: break-word;
    word-break: normal;
  }

  .review-source {
    font-family: 'Courier Prime', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--tan);
    margin-top: 4px;
  }
  .extracted-meta-block {
    margin-top: 8px;
    padding: 8px 10px;
    background: #f5efe2;
    border: 1px dashed var(--tan);
    border-radius: 2px;
  }
  .extracted-meta-block.compact {
    margin-top: 6px;
    padding: 6px 8px;
  }
  .extracted-meta-label {
    font-family: 'Courier Prime', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--tan);
    margin-bottom: 4px;
  }
  .extracted-meta-line {
    font-size: 0.78rem;
    color: var(--brown);
    line-height: 1.35;
    overflow-wrap: break-word;
  }
  .extracted-meta-key {
    color: var(--dark);
    font-weight: 700;
  }
  .extracted-meta-block.compact .extracted-meta-line {
    font-size: 0.72rem;
  }
  .match-reason-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    margin-top: 8px;
  }
  .match-cue {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 2px 8px;
    border: 1px solid var(--tan);
    border-radius: 999px;
    background: var(--parchment);
    color: var(--dark);
    font-family: 'Courier Prime', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    white-space: nowrap;
  }
  .match-cue.strong {
    border-color: rgba(58, 106, 70, 0.35);
    background: rgba(58, 106, 70, 0.12);
    color: var(--green);
  }
  .match-cue.likely {
    border-color: rgba(151, 122, 69, 0.32);
    background: rgba(151, 122, 69, 0.10);
    color: var(--brown);
  }
  .match-cue.uncertain {
    border-color: rgba(122, 43, 43, 0.28);
    background: rgba(122, 43, 43, 0.08);
    color: var(--red);
  }
  .match-cue.neutral {
    color: var(--brown);
  }
  .match-reason-detail {
    font-size: 0.75rem;
    color: var(--brown);
    line-height: 1.4;
    min-width: 0;
    overflow-wrap: break-word;
    word-break: normal;
  }
  .candidate-reason {
    display: block;
    margin-top: 3px;
    font-size: 0.7rem;
    color: var(--tan);
    font-family: 'Courier Prime', monospace;
    letter-spacing: 0.02em;
  }

  .candidate-list { margin-top: 10px; }

  .candidate-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    text-align: left;
    padding: 6px 10px;
    margin-bottom: 4px;
    background: var(--parchment);
    border: 1px solid var(--tan);
    border-radius: 2px;
    cursor: pointer;
    font-family: 'EB Garamond', serif;
    font-size: 0.88rem;
  }

  .candidate-item:hover {
    border-color: var(--brown);
    background: #f0e8d4;
  }

  .candidate-item-thumb {
    flex-shrink: 0;
    width: 36px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    background: var(--tan);
    border-radius: 2px;
    overflow: hidden;
  }

  .candidate-item-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .candidate-item-text { min-width: 0; flex: 1; }

  .candidate-item strong {
    display: block;
    color: var(--dark);
    margin-bottom: 2px;
  }

  .candidate-item span {
    font-size: 0.78rem;
    color: var(--brown);
  }

  .section-label {
    font-family: 'Courier Prime', monospace;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--brown);
    margin-bottom: 8px;
  }

  /* html5-qrcode fallback region */
  #html5qrScanRegion {
    width: 100%;
    margin-bottom: 10px;
  }
  #html5qrScanRegion video {
    max-height: 240px;
    object-fit: cover;
  }

  /* ── Bookshelves ── */
  .header-shelf-btn {
    background: none;
    border: 1px solid rgba(255,255,255,0.3);
    color: var(--cream);
    padding: 5px 12px;
    border-radius: 2px;
    cursor: pointer;
    font-family: 'Courier Prime', monospace;
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: border-color 0.15s, background 0.15s;
    white-space: nowrap;
  }
  .header-shelf-btn:hover {
    border-color: var(--gold);
    background: rgba(255,255,255,0.1);
  }

  .shelf-label-row {
    padding: 10px 0 2px;
    display: flex;
    align-items: center;
  }
  .shelf-label-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: none;
    border: none;
    font-family: 'Playfair Display', serif;
    font-size: 1.12rem;
    color: var(--dark);
    cursor: pointer;
    padding: 2px 0;
    letter-spacing: 0.01em;
  }
  .shelf-label-btn:hover { color: var(--brown); }
  .shelf-label-btn svg { color: var(--brown); flex-shrink: 0; }

  .shelves-modal {
    width: 480px;
    max-width: 95vw;
    max-height: 85vh;
    overflow-y: auto;
  }
  .shelves-modal h3 { margin-bottom: 16px; }

  #shelvesList { margin-bottom: 4px; }

  .shelf-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 6px;
    border-bottom: 1px solid var(--tan);
    flex-wrap: wrap;
    border-radius: 2px;
  }
  .shelf-item:last-child { border-bottom: none; }
  .shelf-item.active { background: #edf4fb; }

  .shelf-item-name {
    flex: 1;
    min-width: 0;
    text-align: left;
    background: none;
    border: none;
    font-family: 'Playfair Display', serif;
    font-size: 1rem;
    color: var(--dark);
    cursor: pointer;
    padding: 2px 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .shelf-item-name:hover { color: var(--brown); }
  .shelf-item.active .shelf-item-name { color: var(--gold); font-weight: 700; }

  .shelf-item-count {
    font-family: 'Courier Prime', monospace;
    font-size: 0.72rem;
    color: var(--brown);
    letter-spacing: 0.04em;
    white-space: nowrap;
    flex-shrink: 0;
  }
  .shelf-item-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
  }

  .shelves-new-shelf-row {
    padding-top: 12px;
    border-top: 1px dashed var(--tan);
    margin-top: 4px;
  }

  .btn.share-btn-active {
    border-color: var(--gold);
    color: var(--gold);
  }

  @media (max-width: 420px) {
    .shelf-item-actions {
      flex-basis: 100%;
      justify-content: flex-end;
    }
  }