:root{--bg: #f6f7f9;--card: #ffffff;--line: #e2e5ea;--text: #1c2024;--muted: #6b7280;--accent: #2d6a4f;--ok: #1a7f4b;--warn: #b45309;--bad: #b42318;color-scheme:light}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.55 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.app{max-width:780px;margin:0 auto;padding:16px}header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}h1{font-size:19px;margin:0}h2,h3{margin:0 0 8px;font-size:17px}nav{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}nav button{background:transparent;border:1px solid var(--line);color:var(--muted)}nav button.active{background:var(--accent);border-color:var(--accent);color:#fff}button{padding:8px 14px;border-radius:8px;border:1px solid var(--accent);background:var(--accent);color:#fff;font-size:14px;cursor:pointer}button:disabled{opacity:.5;cursor:default}button.rec{background:var(--bad);border-color:var(--bad)}.panel{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px}.row{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.messages{display:flex;flex-direction:column;gap:10px;min-height:260px;max-height:52vh;overflow-y:auto;margin-bottom:12px}.msg{padding:9px 12px;border-radius:10px;white-space:pre-wrap;max-width:88%}.msg.user{align-self:flex-end;background:var(--accent);color:#fff}.msg.assistant{align-self:flex-start;background:#eef1f4}.composer{display:flex;gap:8px;align-items:flex-end}textarea,input{flex:1;width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;font:inherit;resize:vertical}.tag{display:inline-block;font-size:12px;color:var(--muted);background:#eef1f4;padding:2px 8px;border-radius:20px;margin:0 0 8px}.label{font-size:13px;font-weight:600;color:var(--muted);margin:16px 0 6px}.hint{color:var(--muted);font-size:13px;margin:4px 0}.error{color:var(--bad);font-size:13px}.quechua{font-size:22px;color:var(--accent)}audio{width:100%;margin-bottom:4px}.exercise em{font-style:normal;font-weight:700;color:var(--accent)}.exercise input{margin:10px 0}.feedback{margin-top:12px;padding:12px;border-radius:10px;border-left:4px solid var(--muted);background:#f3f5f7}.feedback.ok{border-color:var(--ok)}.feedback.warn{border-color:var(--warn)}.feedback.bad{border-color:var(--bad)}.feedback p{margin:6px 0}.promo{color:var(--ok);font-weight:600}.words{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0}.words span{padding:3px 9px;border-radius:6px;font-size:14px}.w-ok{background:#d7f0e2;color:var(--ok)}.w-bad{background:#fbdcd8;color:var(--bad)}.bar{height:8px;background:#e6e9ed;border-radius:6px;overflow:hidden}.bar span{display:block;height:100%;background:var(--accent)}.bar.small{height:6px}.concepts,.errors{list-style:none;padding:0;margin:0}.concepts li{display:grid;grid-template-columns:1fr 90px auto;gap:10px;align-items:center;padding:6px 0;border-bottom:1px solid var(--line);font-size:14px}.concepts em,.errors em{font-style:normal;color:var(--muted);font-size:12px}.errors li{padding:6px 0;border-bottom:1px solid var(--line);font-size:14px}.errors em{display:block}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:7px 6px;border-bottom:1px solid var(--line)}th{color:var(--muted);font-size:12px;font-weight:600}tbody tr{cursor:pointer}tbody tr:hover{background:#f3f5f7}.detail{margin-top:14px;padding-top:10px;border-top:1px solid var(--line)}.card{align-self:stretch;background:#fbfcfd;border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:10px;padding:12px 14px}.card-title{margin:0 0 6px;font-weight:600}.card-title em,.card em{font-style:normal;font-weight:700;color:var(--accent)}.card .quechua{font-size:19px;margin:0 0 2px}.card .row{align-items:center}.card .row input{flex:1;min-width:140px}.dialogo-bar{background:#eef6f1;border:1px solid #cfe3d8;border-radius:8px;padding:7px 10px;margin:0 0 10px;font-size:13px;color:var(--accent)}