/* AmeriPronun — Estructuras */
.structures-shell{max-width:1120px;margin:0 auto}
.structures-toolbar{align-items:center}
.structures-family-gesture{min-width:180px;max-width:330px}
.structures-verb-gesture{min-width:72px;max-width:120px;text-transform:uppercase}
.structures-practice-gesture{min-width:72px;max-width:92px}
.structures-card{padding:18px}
.structures-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;flex-wrap:wrap}
.structures-mode{font-size:12px;font-weight:900;letter-spacing:.08em;color:var(--muted);text-transform:uppercase}
.structures-head h2{margin:4px 0 0;font-size:clamp(22px,4vw,32px)}
.structures-progress{display:flex;gap:8px;align-items:center;font-weight:900;color:var(--muted)}
.structures-formula{display:inline-flex;align-items:center;margin-top:12px;padding:7px 10px;border:1px solid color-mix(in srgb,var(--primary) 30%,var(--line));border-radius:9px;background:color-mix(in srgb,var(--primary) 7%,var(--card));font-weight:900}
.structures-expression{margin-top:16px;font-size:clamp(24px,5vw,36px);font-weight:900;line-height:1.15}
.structures-sentence{margin-top:12px;font-size:18px;font-weight:700}
.structures-rule{margin-top:12px;padding-top:12px;border-top:1px solid var(--line);color:var(--muted)}
.structures-contrast{margin-top:12px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:color-mix(in srgb,var(--line) 18%,transparent)}
.structures-practice{margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.structures-prompt{font-weight:900;margin-bottom:8px}
.structures-write{display:flex;gap:8px;align-items:stretch}
.structures-write input,.structures-write textarea{flex:1 1 auto;min-width:0;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--text);padding:10px 12px;font:inherit}
.structures-write textarea{min-height:92px;resize:vertical}
.structures-primary{border:1px solid var(--primary);background:var(--primary);color:#fff;border-radius:9px;padding:9px 12px;font-weight:900;cursor:pointer}
.structures-feedback{margin-top:12px;padding:12px;border:1px solid var(--line);border-radius:10px;background:var(--card)}
.structures-feedback-title{font-weight:900;margin-bottom:6px}
.structures-model{font-size:17px;font-weight:800}
.structures-user-answer,.structures-note{margin-top:6px;color:var(--muted)}
.structures-selfcheck{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.structures-selfcheck button{border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:8px;padding:7px 10px;font-weight:800;cursor:pointer}
.structures-stage-note{margin-top:8px;font-size:13px;color:var(--muted)}
.structures-card.model-search-hit{outline:3px solid var(--primary);outline-offset:3px}
@media(max-width:760px){
 .structures-family-gesture{min-width:130px;max-width:48vw}
 .structures-verb-gesture{min-width:64px;max-width:90px}
 .structures-write{flex-direction:column}
 .structures-primary{width:100%}
}