/* 計算ドリルメーカー */
.dr-main { max-width: 1100px; }
.dr-layout { display: grid; grid-template-columns: minmax(0, 380px) minmax(0, 1fr); gap: 1rem; align-items: start; }
.dr-side, .dr-view { min-width: 0; }
.dr-view { position: sticky; top: 0.8rem; }
.dr-side [hidden] { display: none !important; }
.dr-two { display: grid; grid-template-columns: 1fr 1fr; gap: 0 0.9rem; }
.dr-two .pt-seg, .dr-side .pt-seg { display: flex; width: 100%; }
.dr-side .pt-seg label { flex: 1; text-align: center; }

.dr-kinds { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.4rem; }
.dr-kind { position: relative; display: block; cursor: pointer; }
.dr-kind input { position: absolute; opacity: 0; pointer-events: none; }
.dr-kind span { display: block; padding: 0.6rem 0.2rem; text-align: center; font-size: 0.9rem; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); color: var(--text); }
.dr-kind:hover span { border-color: var(--pt-accent); }
.dr-kind input:checked + span { background: var(--pt-accent-soft); border-color: var(--pt-accent); color: var(--pt-accent); font-weight: 700; }
.dr-kind input:focus-visible + span { outline: 2px solid var(--pt-accent); outline-offset: 2px; }

.dr-op { padding: 0.3rem 0; border-bottom: 1px solid var(--border); }
.dr-op:last-of-type { border-bottom: 0; }
.dr-op-body { margin: 0.2rem 0 0.5rem 1.6rem; }
.dr-opts .pt-hint { margin-bottom: 0.8rem; }
.dr-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; }
.dr-row select { width: auto; flex: 0 1 auto; min-width: 0; }
.dr-row span { color: var(--text-sub); }

.dr-dans { display: grid; grid-template-columns: repeat(9, 1fr); gap: 0.3rem; }
.dr-dan { position: relative; display: block; cursor: pointer; }
.dr-dan input { position: absolute; opacity: 0; pointer-events: none; }
.dr-dan span { display: block; padding: 0.45rem 0; text-align: center; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); color: var(--text); }
.dr-dan input:checked + span { background: var(--pt-accent-soft); border-color: var(--pt-accent); color: var(--pt-accent); font-weight: 700; }
.dr-dan input:focus-visible + span { outline: 2px solid var(--pt-accent); outline-offset: 2px; }
.dr-dan-actions { margin-top: 0.5rem; }

.dr-actions { margin-top: 0; }
.dr-desc { font-size: 0.9rem; color: var(--text-sub); margin: 0.6rem 0; }
.dr-stage { display: flex; flex-direction: column; align-items: center; gap: 0.9rem; padding: 0.8rem; background: #e5e7eb; border-radius: 6px; max-height: 80vh; overflow: auto; }
html[data-theme="dark"] .dr-stage { background: #2a2f38; }
.dr-page { width: 100%; max-width: 560px; }
.dr-page-label { font-size: 0.8rem; color: #475569; margin-bottom: 0.2rem; }
html[data-theme="dark"] .dr-page-label { color: #aab4c2; }
.dr-page svg { display: block; width: 100%; height: auto; border: 1px solid #cbd5e1; background: #fff; box-shadow: none; }
.dr-view .pt-hint { margin-top: 0.8rem; }

#dr-print { display: none; }

@media (max-width: 860px) {
  .dr-layout { grid-template-columns: minmax(0, 1fr); }
  .dr-view { position: static; order: -1; }
  .dr-stage { max-height: 60vh; }
}
@media (max-width: 420px) {
  .dr-two { grid-template-columns: 1fr; }
  .dr-dans { grid-template-columns: repeat(5, 1fr); }
}

@media print {
  html, body { background: #fff !important; }
  body > *:not(#dr-print) { display: none !important; }
  #dr-print { display: block !important; }
  .dr-sheet { overflow: hidden; break-after: page; page-break-after: always; }
  .dr-sheet:last-child { break-after: auto; page-break-after: auto; }
  .dr-sheet svg { display: block; }
}

.dr-ops-inline { display: grid; grid-template-columns: 1fr 1fr; gap: 0 0.8rem; }
.dr-ops-inline .dr-op { border-bottom: 0; }