.subtitle { font-size: 12px; color: var(--ink-light); font-weight: 300; letter-spacing: 0.1em; border-left: 2px solid var(--accent); padding-left: 10px; }
.panel-header { padding:10px 16px; border-bottom:1px solid var(--border); background:var(--bg); display:flex; justify-content:space-between; align-items:center; gap:12px; }
    .panel-label { font-size:10px; letter-spacing:.2em; color:var(--ink-light); text-transform:uppercase; }
    .panel-body { padding:18px; }
.hidden { display:none !important; }
    @media (max-width:900px) {
}
  
    /* ── PDF page select delete UI ── */
    .pdf-page-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
      gap: 12px;
    }
    .pdf-page-card {
      position: relative;
      min-height: 118px;
      border: 1px solid var(--border);
      border-radius: 8px;
      background: #fff;
      cursor: pointer;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 8px;
      user-select: none;
      transition: border-color 0.15s, background 0.15s, transform 0.15s;
    }
    .pdf-page-card:hover {
      border-color: var(--blue);
      background: var(--blue-light);
      transform: translateY(-1px);
    }
    .pdf-page-card.selected {
      border-color: #DC2626;
      background: #FEF2F2;
    }
    .pdf-page-card.selected .page-order-badge {
      background: #DC2626;
    }
    .pdf-page-card.selected .delete-mark {
      opacity: 1;
      transform: scale(1);
    }
    .page-order-badge {
      position: absolute;
      top: 8px;
      left: 8px;
      min-width: 24px;
      height: 24px;
      padding: 0 7px;
      border-radius: 999px;
      background: var(--blue);
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 11px;
      font-weight: 700;
      line-height: 1;
    }
    .delete-mark {
      position: absolute;
      top: 8px;
      right: 8px;
      width: 24px;
      height: 24px;
      border-radius: 999px;
      background: #DC2626;
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      opacity: 0;
      transform: scale(0.8);
      transition: opacity 0.15s, transform 0.15s;
    }
    .page-icon {
      width: 42px;
      height: 54px;
      border: 1px solid var(--border);
      border-radius: 4px;
      background: linear-gradient(#fff, #F8FAFC);
      box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    }
    .page-label {
      font-size: 12px;
      color: var(--ink);
      font-weight: 600;
      line-height: 1.4;
    }
    .compact-notice {
      margin-bottom: 12px;
    }
    .delete-summary {
      border: 1px solid var(--border);
      background: #fff;
      border-radius: 6px;
      padding: 10px 12px;
      color: var(--ink);
      font-size: 13px;
      font-weight: 600;
    }


/* ── PDF page thumbnail preview ── */
.pdf-thumb-wrap,
.page-thumb-wrap {
  width: 100%;
  height: 112px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #F8F9FA;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin: 8px 0 6px;
}
.pdf-thumb-wrap canvas,
.page-thumb-wrap canvas {
  max-width: 100%;
  max-height: 100%;
  display: block;
  background: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.12);
}
.pdf-thumb-loading,
.page-thumb-loading {
  color: var(--ink-light);
  font-size: 11px;
}
.pdf-page-card {
  min-height: 190px;
}
.page-card {
  min-height: 190px;
}