:root{
  --tinta:#3B2F63; --tinta-2:#50419A; --acento:#8E7BD4; --acento-claro:#C9BEF0;
  --arena:#FBF9FF; --papel:#FFFFFF; --linea:#E9E4F6; --texto:#2A2540; --suave:#6C6485;
  --alerta:#B95656; --sombra:0 18px 44px rgba(59,47,99,.10); --sombra-sutil:0 6px 18px rgba(59,47,99,.07);
  --radio:18px;
}
*,:before,:after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--arena); color:var(--texto);
  font:16px/1.6 "Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-weight:700;letter-spacing:-.02em;color:var(--tinta);margin:0}
a{color:var(--acento)}
button{font-family:inherit}

/* ── marco ── */
.fondo{position:fixed;inset:0;z-index:-1;background:
  radial-gradient(60% 45% at 12% 0%,rgba(142,123,212,.14) 0%,transparent 60%),
  radial-gradient(55% 40% at 95% 8%,rgba(59,47,99,.10) 0%,transparent 62%),
  linear-gradient(180deg,#FBF9FF 0%,#F7F5FD 100%)}
.envoltura{max-width:880px;margin:0 auto;padding:0 20px 72px}
.marca{display:flex;align-items:center;gap:12px;padding:30px 0 22px}
.marca .punto{width:34px;height:34px;border-radius:11px;background:linear-gradient(140deg,var(--acento),var(--tinta));
  box-shadow:0 8px 20px rgba(142,123,212,.35);flex:none}
.marca .rotulo{font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--suave);font-weight:700}

/* ── tarjetas ── */
.tarjeta{background:var(--papel);border:1px solid var(--linea);border-radius:var(--radio);
  box-shadow:var(--sombra);padding:34px 34px 30px}
.tarjeta + .tarjeta{margin-top:18px}
.encabezado h1{font-size:clamp(26px,3.6vw,38px);line-height:1.12;margin-bottom:10px}
.encabezado p{color:var(--suave);margin:0;font-size:16.5px}

/* ── avance ── */
.avance{margin:26px 0 20px}
.avance .pista{height:6px;background:#EFEAFB;border-radius:99px;overflow:hidden}
.avance .lleno{height:100%;width:0;background:linear-gradient(90deg,var(--acento),var(--tinta-2));
  border-radius:99px;transition:width .45s cubic-bezier(.2,.7,.25,1)}
.avance .paso{display:flex;justify-content:space-between;margin-top:9px;font-size:12.5px;color:var(--suave);
  letter-spacing:.04em}
.avance .paso b{color:var(--tinta)}

/* ── preguntas ── */
.seccion-titulo{font-size:13px;letter-spacing:.2em;text-transform:uppercase;color:var(--acento);font-weight:800;
  margin-bottom:6px}
.intro p{color:var(--suave);font-size:15.2px;margin:0 0 14px}
.pregunta{padding:22px 0;border-top:1px solid var(--linea)}
.pregunta:first-of-type{border-top:0;padding-top:6px}
.pregunta .enunciado{font-size:17.5px;font-weight:650;color:var(--tinta);margin-bottom:4px;display:block}
.pregunta .ayuda{font-size:13.5px;color:var(--suave);margin-bottom:12px;display:block}
.pregunta.falta{background:rgba(185,86,86,.05);border-radius:14px;padding:18px 16px;border-top-color:transparent;
  box-shadow:inset 0 0 0 1px rgba(185,86,86,.28)}
.aviso-falta{color:var(--alerta);font-size:13.5px;margin-top:10px;display:none}
.pregunta.falta .aviso-falta{display:block}

.opciones{display:grid;gap:9px;margin-top:12px}
.opciones.doble{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.opcion{display:flex;align-items:center;gap:12px;padding:13px 16px;border:1.5px solid var(--linea);
  border-radius:13px;cursor:pointer;background:#fff;transition:border-color .15s,background .15s,transform .12s}
.opcion:hover{border-color:var(--acento-claro);transform:translateY(-1px)}
.opcion input{accent-color:var(--acento);width:18px;height:18px;flex:none;margin:0}
.opcion span{font-size:15.5px;line-height:1.35}
.opcion.elegida{border-color:var(--acento);background:rgba(142,123,212,.07);
  box-shadow:0 0 0 3px rgba(142,123,212,.10)}

textarea{width:100%;min-height:104px;border:1.5px solid var(--linea);border-radius:14px;padding:14px 16px;
  font:inherit;font-size:15.5px;resize:vertical;background:#fff;color:var(--texto)}
textarea:focus{outline:none;border-color:var(--acento);box-shadow:0 0 0 3px rgba(142,123,212,.12)}
.contador{text-align:right;font-size:12px;color:var(--suave);margin-top:6px}

/* ── escala ── */
.escala{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:12px}
.escala label{border:1.5px solid var(--linea);border-radius:13px;padding:12px 6px;text-align:center;cursor:pointer;
  background:#fff;transition:border-color .15s,background .15s,transform .12s}
.escala label:hover{border-color:var(--acento-claro);transform:translateY(-1px)}
.escala label b{display:block;font-size:19px;color:var(--tinta)}
.escala label span{display:block;font-size:11px;color:var(--suave);line-height:1.25;margin-top:3px}
.escala input{position:absolute;opacity:0;pointer-events:none}
.escala label.elegida{border-color:var(--acento);background:rgba(142,123,212,.09);
  box-shadow:0 0 0 3px rgba(142,123,212,.10)}
.leyenda-escala{display:flex;justify-content:space-between;font-size:12px;color:var(--suave);margin-top:8px}

/* ── navegación ── */
.barra{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:26px}
.btn{border:0;border-radius:13px;padding:14px 26px;font-size:15.5px;font-weight:700;cursor:pointer;
  transition:transform .12s,box-shadow .15s,background .15s}
.btn:active{transform:translateY(1px)}
.btn-primario{background:linear-gradient(135deg,var(--acento),var(--tinta-2));color:#fff;
  box-shadow:0 12px 26px rgba(142,123,212,.30)}
.btn-primario:hover{box-shadow:0 16px 32px rgba(142,123,212,.38)}
.btn-plano{background:transparent;color:var(--suave);padding:14px 10px}
.btn-plano:hover{color:var(--tinta)}
.btn:disabled{opacity:.55;cursor:not-allowed;box-shadow:none}

/* ── cierre ── */
.final{text-align:center;padding:56px 34px}
.final .tilde{width:72px;height:72px;border-radius:50%;margin:0 auto 20px;display:grid;place-items:center;
  background:rgba(142,123,212,.12);color:var(--acento);font-size:34px}
.final h2{font-size:27px;margin-bottom:10px}
.final p{color:var(--suave);max-width:520px;margin:0 auto}
.nota-pie{text-align:center;color:var(--suave);font-size:12.5px;margin-top:26px;line-height:1.7}

@media (max-width:640px){
  .tarjeta{padding:24px 20px 22px;border-radius:15px}
  .escala{grid-template-columns:repeat(5,1fr);gap:5px}
  .escala label span{display:none}
  .barra{flex-direction:row-reverse}
}

/* ── calidez ── */
.envoltura{max-width:880px;margin:0 auto;padding:0 20px 72px;animation:entrada .5s ease both}
@keyframes entrada{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.tarjeta{animation:entrada .45s ease both}
.saludo{font-size:clamp(23px,3vw,31px);line-height:1.2;margin:2px 0 10px;color:var(--tinta);letter-spacing:-.02em}
.intro p:last-child{margin-bottom:18px}
.avance .paso{align-items:center}
.puntos{display:inline-flex;gap:6px;align-items:center}
.puntos i{width:8px;height:8px;border-radius:50%;background:#E2DBF4;transition:all .35s}
.puntos i.hecho{background:var(--acento)}
.puntos i.ahora{background:var(--tinta);width:22px;border-radius:99px}
.pregunta{transition:background .2s}
.opcion{position:relative;overflow:hidden}
.opcion:after{content:"";position:absolute;inset:0;background:radial-gradient(60% 120% at 12% 50%,rgba(142,123,212,.14),transparent 70%);
  opacity:0;transition:opacity .25s;pointer-events:none}
.opcion.elegida:after{opacity:1}
.opcion.elegida span{font-weight:650}
.escala label.elegida b{color:var(--acento)}
.final{animation:entrada .55s ease both}
.final .tilde{animation:brote .6s cubic-bezier(.2,1.4,.4,1) both;animation-delay:.1s}
@keyframes brote{from{transform:scale(.6);opacity:0}to{transform:scale(1);opacity:1}}
.cierre-extra{margin-top:16px !important;font-size:14.5px;color:var(--suave)}
.encabezado h1{background:linear-gradient(120deg,var(--tinta) 0%,var(--acento) 140%);-webkit-background-clip:text;
  background-clip:text;color:transparent}
.marca .rotulo{color:var(--tinta)}
.nota-pie{max-width:560px;margin-left:auto;margin-right:auto}
.btn-primario{position:relative}
.btn-primario:after{content:"";position:absolute;inset:0;border-radius:13px;box-shadow:0 0 0 0 rgba(142,123,212,.45);
  transition:box-shadow .3s}
.btn-primario:hover:after{box-shadow:0 0 0 6px rgba(142,123,212,.14)}
@media (prefers-reduced-motion:reduce){*{animation:none !important;transition:none !important}}

/* ── tarjetas por pregunta ── */
.saludo{font-size:clamp(21px,2.7vw,28px);margin:6px 0 8px}
.preguntas{display:grid;gap:14px;margin-top:6px}
.pregunta{padding:20px 22px;border:1px solid var(--linea);border-radius:16px;background:#fff;
  box-shadow:var(--sombra-sutil);transition:box-shadow .2s,border-color .2s,transform .2s}
.pregunta:first-of-type{padding-top:20px}
.pregunta:hover{box-shadow:0 12px 28px rgba(59,47,99,.09);border-color:#DCD4F1}
.pregunta:focus-within{border-color:var(--acento-claro);box-shadow:0 0 0 3px rgba(142,123,212,.10)}
.pregunta .enunciado{display:flex;gap:10px;align-items:baseline;font-size:17px;margin-bottom:6px}
.numero{flex:none;width:8px;height:8px;border-radius:50%;background:var(--acento-claro);margin-top:7px}
.pregunta.respondida .numero{background:var(--acento);box-shadow:0 0 0 3px rgba(142,123,212,.16)}
.pregunta.falta{border-color:rgba(185,86,86,.5);box-shadow:0 0 0 3px rgba(185,86,86,.10);background:#FFFBFA}
.pregunta.falta .numero{background:var(--alerta)}
.avance{position:sticky;top:0;background:#fff;padding:14px 0 12px;margin:0 0 14px;z-index:5;
  box-shadow:0 10px 16px -10px rgba(59,47,99,.18)}
.tarjeta{padding-top:22px}
.barra{position:sticky;bottom:0;background:#fff;padding:16px 0 6px;margin-top:20px;
  box-shadow:0 -10px 16px -10px rgba(59,47,99,.18)}
@media (max-width:640px){
  .pregunta{padding:16px 15px}
  .opciones.doble{grid-template-columns:1fr}
}

/* ── portada con foto ── */
.envoltura{padding-top:26px}
.portada{position:relative;overflow:hidden;border-radius:24px;margin-bottom:20px;min-height:clamp(260px,34vw,360px);
  display:flex;align-items:flex-end;box-shadow:0 22px 50px rgba(59,47,99,.20);isolation:isolate}
.portada-foto{position:absolute;inset:0;z-index:0}
.portada-foto img{width:100%;height:100%;object-fit:cover;display:block;transform:scale(1.02)}
.portada:before{content:"";position:absolute;inset:0;z-index:1;background:
  linear-gradient(180deg,rgba(43,33,74,0) 38%,rgba(43,33,74,.42) 62%,rgba(38,28,68,.78) 100%)}
.portada-texto{position:relative;z-index:2;padding:34px 34px 30px;max-width:640px}
.etiqueta{display:inline-block;font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;font-weight:800;
  color:#F6F2FF;background:rgba(43,33,74,.42);border:1px solid rgba(255,255,255,.34);
  padding:6px 13px;border-radius:999px;margin-bottom:14px;backdrop-filter:blur(6px)}
.portada h1{font-size:clamp(24px,3.4vw,38px);line-height:1.12;color:#fff;margin:0 0 10px;letter-spacing:-.025em;
  text-shadow:0 3px 10px rgba(20,12,40,.75),0 10px 34px rgba(20,12,40,.55)}
.portada p{margin:0;color:rgba(250,248,255,.96);font-size:15.5px;line-height:1.6;max-width:540px;
  text-shadow:0 2px 8px rgba(20,12,40,.8),0 8px 24px rgba(20,12,40,.5)}
.sellos{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:18px 0 0}
.sellos li{font-size:12.5px;font-weight:700;color:#F6F2FF;background:rgba(43,33,74,.44);
  border:1px solid rgba(255,255,255,.3);border-radius:999px;padding:7px 14px;backdrop-filter:blur(6px)}
.sellos li:before{content:"✓";margin-right:7px;color:#D9CEFF;font-weight:800}
.encabezado{display:none}
@media (max-width:760px){
  .portada{min-height:250px;border-radius:20px}
  .portada-texto{padding:24px 20px 22px}
  .etiqueta{font-size:10px;letter-spacing:.14em;padding:5px 11px;white-space:nowrap}
  .portada h1{font-size:clamp(22px,6.2vw,30px)}
  .portada p{font-size:14.5px}
  .sellos li{font-size:11.5px;padding:6px 11px}
}

/* ── campo numérico ── */
.numero-campo{width:140px;max-width:100%;border:1.5px solid var(--linea);border-radius:13px;padding:13px 16px;
  font:inherit;font-size:16px;background:#fff;color:var(--texto);margin-top:10px}
.numero-campo:focus{outline:none;border-color:var(--acento);box-shadow:0 0 0 3px rgba(142,123,212,.14)}
/* ── créditos ── */
.creditos{margin-top:14px;font-size:12.5px;color:var(--suave);text-align:center;line-height:1.7}
@media (max-width:420px){
  .escala label{padding:10px 3px}
  .escala label b{font-size:17px}
  .btn{padding:13px 18px;font-size:15px}
  .tarjeta{padding:20px 14px 18px}
  .pregunta{padding:14px 13px}
  .pregunta .enunciado{font-size:15.5px}
  .opcion{padding:12px 13px}
  .opcion span{font-size:15px}
}