#tdtr31{max-width:980px;margin:28px auto;font-family:inherit;color:#20252a}
#tdtr31 *{box-sizing:border-box}
.tdtr31-progress{display:flex;align-items:center;justify-content:center;gap:8px;margin:0 0 18px}
.tdtr31-progress span{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;border:1px solid #bbb;font-weight:700;color:#777}
.tdtr31-progress span.active{background:#222;color:#fff;border-color:#222}
.tdtr31-progress i{height:1px;width:60px;background:#ccc}
.tdtr31-app{border:1px solid #ddd;border-radius:20px;background:#fff;box-shadow:0 5px 24px rgba(0,0,0,.07);overflow:hidden}
.tdtr31-screen{display:none;padding:34px}
.tdtr31-screen.active{display:block}
.eyebrow{font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;font-weight:800;opacity:.6}
h1,h2{margin:.35rem 0 .7rem}.lead{font-size:1.12rem;line-height:1.55}.lead.small{font-size:1rem}
.facts{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:24px 0}
.fact{padding:18px;border:1px solid #ddd;border-radius:15px;background:#fafafa}
.animal{font-size:1.12rem;font-weight:800;margin-bottom:7px}.fact p{margin:0;line-height:1.5}
.primary,.secondary{font:inherit;border-radius:10px;padding:11px 16px;cursor:pointer}
.primary{background:#222!important;color:#fff!important;border:1px solid #222!important}
.secondary{background:#fff!important;color:#20252a!important;border:1px solid #bbb!important}
.context{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 0}
.context>div{padding:16px;border-radius:14px;background:#f5f5f5;line-height:1.5}
.task{font-size:1.15rem;padding:16px 18px;border-left:4px solid #555;background:#f7f7f7;margin:18px 0}
.model{font-size:1.25rem;font-weight:700;padding:18px;border-radius:14px;background:#eee}
.explain{opacity:.75}
.answer{min-height:58px;border:2px dashed #bbb;border-radius:13px;margin:18px 0;padding:10px;display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.tiles{display:flex;flex-wrap:wrap;gap:8px}
.tile,.steiger-option{
  appearance:none!important;
  -webkit-appearance:none!important;
  font:inherit!important;
  border-radius:10px!important;
  padding:11px 16px!important;
  cursor:pointer!important;
  background:#fff!important;
  border:1px solid #999!important;
  color:#20252a!important;
  -webkit-text-fill-color:#20252a!important;
  text-shadow:none!important;
  box-shadow:none!important;
}
.tile .tile-label,.steiger-option .tile-label{
  color:#20252a!important;
  -webkit-text-fill-color:#20252a!important;
  opacity:1!important;
  visibility:visible!important;
}
.tile:hover,.tile:focus,.steiger-option:hover,.steiger-option:focus{
  background:#f1f1f1!important;
  color:#20252a!important;
  -webkit-text-fill-color:#20252a!important;
}
.tile:disabled{opacity:.35!important}
.chosen{padding:7px 9px;border-radius:8px;background:#e8e8e8;color:#20252a!important;border:1px solid #ccc!important;cursor:pointer!important;font:inherit!important}
.actions{display:flex;justify-content:space-between;margin-top:18px;gap:8px}
.next-area{margin-top:14px}
.ok,.again{margin-top:16px;padding:15px;border-radius:12px;line-height:1.55}
.ok{background:#eaf7ec}.again{background:#fff2f2}.again hr{border:0;border-top:1px solid #ddd}
.forms{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:22px 0}
.form{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr) auto minmax(0,1.2fr);align-items:center;gap:9px;padding:13px;border:1px solid #ddd;border-radius:11px;min-width:0}
.form strong,.form b{min-width:0;overflow-wrap:anywhere}.form span{white-space:nowrap}.final-example{padding:18px;border-radius:14px;background:#f5f5f5;line-height:1.45}
.steiger-card{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:12px;align-items:center;margin:25px 0}
.steiger-card>div{padding:20px;text-align:center;border:1px solid #ddd;border-radius:13px;font-size:1.25rem}
.steiger-card .base{font-weight:700;background:#f5f5f5}
.steiger-card .arrow{border:0;padding:0;font-size:1.4rem}
.steiger-card .blank{font-weight:700;min-height:68px}
.steiger-options{display:flex;gap:10px;flex-wrap:wrap}
@media(max-width:650px){
  .tdtr31-screen{padding:22px}.facts,.context,.forms{grid-template-columns:1fr}
  .tdtr31-progress i{width:30px}
  .steiger-card{grid-template-columns:1fr;gap:6px}
  .steiger-card .arrow{display:none}
}

.stage-nav{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:22px;padding-top:16px;border-top:1px solid #e5e5e5}
.stage-nav .primary,.stage-nav .secondary{margin:0}


/* 3.4.0 – Navigation in Aufgabe 3 und kontextgebundener Abschlussschritt */
.tdtr31 .compare-nav {
  display:flex;
  justify-content:space-between;
  gap:12px;
  margin:18px 0 8px;
  flex-wrap:wrap;
}
.tdtr31 .animal-options {
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin:12px 0;
}
.tdtr31 .sentence-task {
  font-size:1.15rem;
  line-height:1.55;
  margin-bottom:16px;
}
.tdtr31 #finishSteig {
  margin-top:12px;
}