:root{
  --navy:#0B1220; --navy2:#131C30; --navy3:#1B2740;
  --naranja:#F97316; --naranja2:#FB923C;
  --texto:#EAF0FA; --tenue:#93A2BE;
  --ok:#22C55E; --medio:#FACC15; --mal:#F87171;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;background:var(--navy);color:var(--texto);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;}
body{min-height:100vh;padding-bottom:env(safe-area-inset-bottom)}
#app{max-width:560px;margin:0 auto;padding:0 18px 32px}
.vista{display:none}
.vista.activa{display:block;animation:ent 0.22s ease}
@keyframes ent{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.oculto{display:none !important}

.cabecera{display:flex;align-items:center;justify-content:space-between;padding:18px 0 8px}
.cabecera.compacta{padding:14px 0 6px;gap:10px}
.marca{font-weight:800;letter-spacing:2px;font-size:13px;color:var(--texto)}
.marca span{color:var(--naranja);margin:0 4px}
.rachas{text-align:right;line-height:1}
.rachas span{font-size:26px;font-weight:800;color:var(--naranja)}
.rachas small{display:block;font-size:10px;color:var(--tenue);letter-spacing:1px;text-transform:uppercase}
.btn-atras{background:var(--navy2);border:0;color:var(--texto);font-size:26px;line-height:1;
  width:40px;height:40px;border-radius:12px;cursor:pointer}
.pasos{display:flex;gap:6px;flex:1}
.paso{flex:1;height:5px;border-radius:3px;background:var(--navy3)}
.paso.activo{background:var(--naranja)}
.paso.hecho{background:#3B4A67}
.contador{font-size:12px;color:var(--tenue);font-variant-numeric:tabular-nums}

.tarjeta-dia{background:linear-gradient(160deg,var(--navy2),#101a2c);border:1px solid #22314e;
  border-radius:22px;padding:22px;margin-top:10px}
.etiqueta{font-size:11px;letter-spacing:2px;color:var(--naranja);font-weight:700}
h1{font-size:26px;line-height:1.15;margin:10px 0 8px;letter-spacing:-0.5px}
.meta{color:var(--tenue);font-size:14px;line-height:1.45;margin:0 0 16px}
.barra{height:6px;background:#0a1120;border-radius:3px;overflow:hidden;margin-bottom:18px}
.barra i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--naranja),var(--naranja2));transition:width .4s}

.btn-principal{width:100%;background:var(--naranja);color:#1a0d02;border:0;border-radius:16px;
  padding:18px;font-size:17px;font-weight:800;cursor:pointer}
.btn-principal:active{transform:scale(.99)}
.aviso-ok{margin-top:14px;font-size:13px;color:var(--ok);text-align:center}
.rejilla{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
.btn-secundario{background:var(--navy2);border:1px solid #22314e;color:var(--texto);
  border-radius:14px;padding:16px 12px;font-size:14px;font-weight:600;cursor:pointer}
.btn-secundario b{color:var(--naranja)}
.nota{color:var(--tenue);font-size:12.5px;line-height:1.5;text-align:center;margin-top:22px}

/* bloques de lección */
.bloque-titulo{font-size:11px;letter-spacing:2px;color:var(--naranja);font-weight:700;margin:20px 0 6px}
h2{font-size:22px;margin:0 0 6px;line-height:1.2}
.ayuda{color:var(--tenue);font-size:13.5px;line-height:1.45;margin:0 0 16px}

.item{background:var(--navy2);border:1px solid #22314e;border-radius:16px;padding:16px;margin-bottom:12px;transition:border-color .2s, box-shadow .2s}
.item.sonando{border-color:var(--naranja);box-shadow:0 0 0 2px rgba(249,115,22,.35)}
.item .en{font-size:19px;font-weight:600;line-height:1.3;margin-bottom:4px}
.item .es{color:var(--tenue);font-size:13.5px}
.fila{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.btn-audio{flex:1;min-width:88px;background:var(--navy3);border:0;color:var(--texto);border-radius:12px;
  padding:13px 10px;font-size:14px;font-weight:600;cursor:pointer}
.btn-audio.grabar{background:var(--naranja);color:#1a0d02}
.btn-audio.grabando{background:var(--mal);color:#fff}
.btn-audio:disabled{opacity:.45}
.resultado{margin-top:12px;font-size:13.5px;line-height:1.5;border-top:1px dashed #2b3b5c;padding-top:12px}
.puntaje{font-weight:800;font-size:15px}
.puntaje.alto{color:var(--ok)} .puntaje.medio{color:var(--medio)} .puntaje.bajo{color:var(--mal)}
.oido{color:var(--tenue);font-style:italic}
.fallo{color:var(--naranja2);font-weight:700;text-decoration:underline dotted}
.aviso-tip{background:#12203a;border-left:3px solid var(--naranja);border-radius:10px;padding:12px 14px;
  font-size:13px;color:#cfdcf0;line-height:1.5;margin:14px 0}
.btn-siguiente{position:sticky;bottom:14px;width:100%;background:var(--naranja);color:#1a0d02;border:0;
  border-radius:16px;padding:17px;font-size:16px;font-weight:800;cursor:pointer;margin-top:16px;
  box-shadow:0 8px 24px rgba(249,115,22,.25)}
#cuerpo-leccion{padding-bottom:96px}
.cierre{text-align:center;padding:30px 0}
.cierre .nota-grande{font-size:52px;font-weight:800;color:var(--naranja);line-height:1}
.cierre .concepto{color:var(--tenue);font-size:13px;letter-spacing:1px;text-transform:uppercase}
.cierre .frase-final{font-size:18px;margin:22px 0;line-height:1.4}
.estadisticas{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:20px 0}
.estadisticas div{background:var(--navy2);border-radius:14px;padding:14px}
.estadisticas b{display:block;font-size:24px;color:var(--naranja)}
.estadisticas small{color:var(--tenue);font-size:11.5px;letter-spacing:.5px}

/* panel */
.metricas{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:14px 0}
.metricas div{background:var(--navy2);border:1px solid #22314e;border-radius:16px;padding:16px}
.metricas b{display:block;font-size:26px;color:var(--naranja)}
.metricas small{color:var(--tenue);font-size:11.5px}
.lista{background:var(--navy2);border:1px solid #22314e;border-radius:16px;padding:6px 16px;margin-bottom:14px}
.lista .linea{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid #1f2c46;font-size:14px}
.lista .linea:last-child{border-bottom:0}
.lista .linea span:last-child{color:var(--tenue);font-size:13px}
h3{font-size:12px;letter-spacing:1.6px;color:var(--tenue);text-transform:uppercase;margin:22px 0 8px}

/* capas */
.capa{position:fixed;inset:0;background:rgba(6,10,20,.88);display:flex;align-items:center;
  justify-content:center;z-index:50;backdrop-filter:blur(4px)}
.cargando{text-align:center}
.aro{width:44px;height:44px;border:3px solid #2b3b5c;border-top-color:var(--naranja);border-radius:50%;
  margin:0 auto 14px;animation:girar .8s linear infinite}
@keyframes girar{to{transform:rotate(360deg)}}
.cargando p{color:var(--tenue);font-size:14px}
.brindis{position:fixed;left:50%;bottom:26px;transform:translate(-50%,20px);background:#1f2c46;
  border:1px solid #33456a;color:var(--texto);padding:12px 18px;border-radius:12px;font-size:14px;
  opacity:0;pointer-events:none;transition:.25s;z-index:60;max-width:90%}
.brindis.visible{opacity:1;transform:translate(-50%,0)}

/* entrada */
.entrada{display:flex;flex-direction:column;justify-content:center;min-height:88vh;text-align:center}
.entrada input{width:100%;background:var(--navy2);border:1px solid #22314e;border-radius:14px;
  color:var(--texto);font-size:22px;letter-spacing:8px;text-align:center;padding:16px;margin:18px 0 12px}
.entrada .error{color:var(--mal);font-size:13px;min-height:18px}