/* ============================================================
   JF PDF — tool interface styles (uploader, options, results)
   Loaded only on tool pages.
   ============================================================ */

.btn-row { display: flex; gap: .7rem; justify-content: center; margin-top: 1.3rem; flex-wrap: wrap; }

.tool-feature-list {
  columns: 2;
  column-gap: 2rem;
}
@media (max-width: 560px) {
  .tool-feature-list { columns: 1; }
}

/* stage transitions */
.tool-stage { animation: df-stage-in .28s ease; }
@keyframes df-stage-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* option segments */
.seg {
  display: inline-flex; background: var(--bg-soft); border-radius: 11px; padding: .3rem; gap: .2rem;
  flex-wrap: wrap; border: 1px solid var(--border);
}
.seg button {
  border: none; background: transparent; color: var(--text-soft);
  font: 600 .86rem var(--font); padding: .5rem .9rem; border-radius: 8px; cursor: pointer;
  transition: all .15s ease; display: inline-flex; align-items: center; gap: .35rem;
}
.seg button.is-active { background: var(--bg-elev); color: var(--df-brand-600); box-shadow: var(--shadow-sm); }
.seg button:hover:not(.is-active) { color: var(--text); }

/* page reorder grid (merge/image tools) */
.reorder-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: .8rem; margin-top: 1.2rem;
}
.reorder-card {
  position: relative; background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 12px; padding: .8rem; cursor: grab;
  transition: transform .15s ease, box-shadow .2s ease, border-color .2s ease;
}
.reorder-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.reorder-card.is-dragging { opacity: .35; }
.reorder-card.is-drag-over { border-color: var(--df-brand-500); border-style: dashed; }
.reorder-card .rc-order {
  position: absolute; top: .5rem; left: .5rem;
  width: 24px; height: 24px; border-radius: 7px;
  background: var(--grad-brand); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: .72rem; font-weight: 800;
}
.reorder-card .rc-name {
  font-size: .78rem; font-weight: 600; margin-top: .5rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.reorder-card .rc-meta { font-size: .7rem; color: var(--text-mute); }
.reorder-card img.rc-thumb { width: 100%; height: 90px; object-fit: cover; border-radius: 8px; background: var(--bg-soft); }
.reorder-card .rc-thumb-empty {
  width: 100%; height: 90px; border-radius: 8px; background: var(--bg-soft);
  display: flex; align-items: center; justify-content: center; color: var(--text-mute);
}

/* page preview grid (split/rotate/preview) */
.preview-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: .7rem; margin-top: 1.1rem;
}
.preview-cell {
  position: relative; border: 2px solid var(--border); border-radius: 10px;
  overflow: hidden; background: var(--bg-elev); cursor: pointer; transition: border-color .15s ease;
}
.preview-cell:hover { border-color: var(--border-strong); }
.preview-cell.is-selected { border-color: var(--df-brand-500); box-shadow: 0 0 0 3px var(--ring); }
.preview-cell img { width: 100%; aspect-ratio: 3/4; object-fit: contain; background: #fff; display: block; }
.preview-cell .pc-label {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(15,18,34,.72));
  color: #fff; font-size: .72rem; font-weight: 700; padding: .8rem .4rem .3rem;
  text-align: center;
}
.preview-cell .pc-check {
  position: absolute; top: 5px; right: 5px; width: 20px; height: 20px; border-radius: 6px;
  background: var(--df-brand-500); color: #fff; display: none; align-items: center; justify-content: center;
}
.preview-cell.is-selected .pc-check { display: inline-flex; }

/* watermark canvas preview */
.wm-preview-wrap {
  text-align: center; margin: 1rem 0;
}
.wm-preview-wrap img { max-width: 100%; border-radius: 12px; border: 1px solid var(--border); box-shadow: var(--shadow-md); }

/* signature pad */
.sig-pad {
  background: #fff; border: 1px solid var(--border-strong); border-radius: 12px;
  touch-action: none; width: 100%; max-width: 520px; height: auto; aspect-ratio: 16/9; margin: 0 auto; display: block;
}
.sig-pad-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: .8rem; margin-top: 1rem;
}
.sig-option {
  border: 2px solid var(--border); border-radius: 14px; padding: .9rem; text-align: center;
  cursor: pointer; font-weight: 600; font-size: .9rem; color: var(--text-soft);
  background: var(--bg-elev); transition: all .15s ease;
}
.sig-option:hover { border-color: var(--border-strong); }
.sig-option.is-active { border-color: var(--df-brand-500); color: var(--df-brand-500); background: color-mix(in srgb, var(--df-brand-500) 6%, var(--bg-elev)); }
.sig-fonts { font-size: 1.3rem; }

/* busy state for whole shell */
.tool-shell.is-busy { pointer-events: none; opacity: .85; }

/* small helper text */
.opt .opt-help { font-size: .76rem; color: var(--text-mute); }
.range-row { display: flex; gap: .4rem; align-items: center; }
.range-row input[type="range"] { flex: 1; accent-color: var(--df-brand-600); }

/* multi-download list */
.dl-list { display: grid; gap: .5rem; max-width: 520px; margin: 1rem auto 0; text-align: left; }
.dl-item {
  display: flex; align-items: center; gap: .7rem;
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: 11px;
  padding: .6rem .9rem; font-size: .88rem; font-weight: 600;
}
.dl-item a { margin-left: auto; display: inline-flex; align-items: center; gap: .3rem; }

@media (max-width: 640px) {
  .sig-pad-grid { grid-template-columns: 1fr; }
  .preview-grid { grid-template-columns: repeat(auto-fill, minmax(95px, 1fr)); gap: .5rem; }
  .reorder-grid { grid-template-columns: repeat(auto-fill, minmax(115px, 1fr)); gap: .6rem; }
}

@media (max-width: 480px) {
  .btn-row .btn { width: 100%; }
  .preview-grid { grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); }
  .reorder-grid { grid-template-columns: repeat(auto-fill, minmax(95px, 1fr)); }
  .dl-item { flex-wrap: wrap; }
  .dl-item a { margin-left: 0; width: 100%; justify-content: center; margin-top: .3rem; }
}