/* Split PDF page specific styles */
#pageCountHint { color: var(--accent); }
.result .btn { justify-content: flex-start; }

/* ---------- PDF page preview ---------- */
.preview { margin-top: 22px; }
.preview-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  flex-wrap: wrap; margin-bottom: 6px;
}
.preview-title { font-weight: 700; font-size: 1rem; }
.preview-count { color: var(--muted); font-size: 0.85rem; margin-left: 8px; }
.preview-tools { display: flex; align-items: center; gap: 8px; }
.sel-count { color: var(--accent); font-size: 0.85rem; font-weight: 700; margin-right: 4px; }
.btn-mini {
  border: 1px solid var(--border-strong); background: var(--surface); color: var(--muted);
  border-radius: 8px; padding: 6px 12px; font-size: 0.82rem; font-weight: 600; cursor: pointer;
  transition: all 0.15s ease;
}
.btn-mini:hover { color: var(--accent); border-color: var(--accent); }
.preview-tip { color: var(--faint); font-size: 0.85rem; margin: 0 0 14px; }
.preview-tip strong { color: var(--muted); }

.thumb-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 14px;
}
.thumb {
  position: relative;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  background: var(--surface-2); border: 2px solid var(--border);
  border-radius: 12px; padding: 12px 10px; animation: pop 0.18s ease;
  cursor: pointer; transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
  outline: none;
}
.thumb:hover { transform: translateY(-3px); border-color: var(--border-strong); box-shadow: var(--shadow-soft); }
.thumb:focus-visible { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(79, 110, 240, 0.22); }
.thumb canvas {
  width: 100%; height: auto; border-radius: 6px; background: #fff;
  box-shadow: 0 4px 14px rgba(43, 54, 90, 0.16); border: 1px solid var(--border);
  pointer-events: none;
}
.thumb-label { font-size: 0.8rem; color: var(--muted); font-weight: 600; pointer-events: none; }

/* Selected state */
.thumb.selected { border-color: var(--accent); background: rgba(79, 110, 240, 0.08); }
.thumb.selected .thumb-label { color: var(--accent); }
.thumb-check {
  position: absolute; top: 8px; right: 8px; z-index: 2;
  width: 24px; height: 24px; border-radius: 50%;
  display: grid; place-items: center; font-size: 0.85rem; font-weight: 800; color: #fff;
  background: var(--accent); box-shadow: 0 3px 8px rgba(79, 110, 240, 0.5);
  transform: scale(0); transition: transform 0.15s ease; pointer-events: none;
}
.thumb.selected .thumb-check { transform: scale(1); }

.thumb-error canvas { min-height: 80px; }
.thumb-error .thumb-label { color: var(--danger); }