/* Cell and Mitosis Simulator (the structure scenes reuse /humanbody/humanbody.css) */
.cd-tabs { display: flex; flex-wrap: wrap; gap: .45rem; margin-bottom: .8rem; }
.cd-tabs button { display: flex; align-items: center; gap: .45rem; border: 2px solid var(--pmcq-line, #d7e2e8); background: #fff; color: var(--bs-primary); border-radius: 12px; padding: .5rem .95rem; font-weight: 700; cursor: pointer; }
.cd-tabs button.on { background: var(--bs-primary); border-color: var(--bs-primary); color: #fff; }

.cd-main { display: grid; grid-template-columns: minmax(0, 1fr) 350px; gap: 1rem; align-items: start; }
.cd-stagebox { position: relative; background: #fff; border: 1px solid var(--pmcq-line, #d7e2e8); border-radius: 14px; overflow: hidden; }
.cd-svg { display: block; width: 100%; height: auto; background: radial-gradient(circle at 50% 40%, #fff, #f4f8fb); }
.cd-stage-name { position: absolute; left: 14px; top: 10px; background: rgba(11, 61, 92, .92); color: #fff; padding: .25rem .8rem; border-radius: 999px; font-weight: 700; font-size: .95rem; pointer-events: none; }
.cd-controls { display: flex; align-items: center; gap: .8rem; padding: .55rem .8rem; border-top: 1px solid var(--pmcq-line, #d7e2e8); background: #f8fbfc; flex-wrap: wrap; }
.cd-controls .form-range { flex: 1 1 180px; min-width: 120px; margin: 0; }
.cd-kind[hidden] { display: none; }

.cd-side { padding: .9rem; }
.cd-title { font-size: 1.1rem; color: var(--bs-primary); margin: 0 0 .5rem; }
.cd-steps { list-style: none; margin: 0 0 .7rem; padding: 0; display: grid; gap: .2rem; }
.cd-steps button { width: 100%; text-align: left; display: flex; align-items: center; gap: .5rem; border: 1px solid transparent; background: transparent; border-radius: 10px; padding: .28rem .45rem; color: #475569; font-size: .9rem; cursor: pointer; }
.cd-steps button:hover { background: #f1f6f8; }
.cd-steps button.on { background: #e6f0f5; border-color: var(--bs-primary); color: var(--bs-primary); font-weight: 700; }
.cd-num { flex: 0 0 1.55rem; height: 1.55rem; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: #e2e8f0; font-size: .76rem; font-weight: 700; }
.cd-steps button.on .cd-num { background: var(--bs-primary); color: #fff; }
.cd-steps button.done .cd-num { background: #16a34a; color: #fff; }
.cd-nav { display: flex; gap: .4rem; margin-bottom: .7rem; }
.cd-nav .btn { flex: 1; }
.cd-caption h3 { font-size: 1.02rem; color: var(--bs-primary); margin-bottom: .35rem; }
.cd-caption p { font-size: .92rem; margin-bottom: .5rem; }
.cd-table th { width: 48%; font-weight: 600; color: #475569; }
.cd-table td { font-weight: 700; color: #0b3d5c; }

.cd-compare th, .cd-compare td { vertical-align: top; }

@media (max-width: 991px) {
  .cd-main { display: block; }
  .cd-side { margin-top: 1rem; }
  .cd-stagebox { position: sticky; top: 0; z-index: 6; box-shadow: 0 4px 12px rgba(15, 23, 42, .14); }
}