:root{
  --bg:#F2F2F7; --card:#FFFFFF;
  --fill:rgba(118,118,128,.12); --fill-strong:rgba(118,118,128,.2);
  --label:#000; --label2:rgba(60,60,67,.6); --label3:rgba(60,60,67,.3);
  --sep:rgba(60,60,67,.14);
  --thumb:#FFFFFF; --thumb-shadow:0 3px 8px rgba(0,0,0,.12),0 3px 1px rgba(0,0,0,.04);
  --shadow:0 1px 1px rgba(0,0,0,.02),0 6px 22px rgba(0,0,0,.045);
  --bar:rgba(242,242,247,.8);
  --backdrop:rgba(0,0,0,.28);
  --track:.17;
  --blue:#007AFF; --green:#34C759; --orange:#FF9500; --red:#FF3B30; --pink:#FF2D55;
  --purple:#AF52DE; --teal:#30B0C7; --indigo:#5856D6; --gray:#8E8E93;
  --green-ink:#248A3D; --red-ink:#D70015; --orange-ink:#C93400;
  --ease:cubic-bezier(.32,.72,0,1);
}
/* Siempre la paleta clara de iOS, aunque el dispositivo esté en modo oscuro */
:root{color-scheme:light}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Inter","Segoe UI Variable Text","Segoe UI",system-ui,sans-serif;
  font-optical-sizing:auto;
  background:var(--bg); color:var(--label);
  font-size:17px; line-height:1.3; letter-spacing:-.011em;
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
  min-height:100vh;
}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;-webkit-tap-highlight-color:transparent;letter-spacing:inherit}
button:disabled{cursor:default}
:focus-visible{outline:3px solid color-mix(in srgb,var(--blue) 55%,transparent);outline-offset:2px;border-radius:12px}
.num{font-variant-numeric:tabular-nums}
.link{color:var(--blue);font-size:17px;transition:opacity .15s;display:inline-flex;align-items:center;gap:2px}
.link:active{opacity:.5}
kbd{font:inherit;font-size:12px;padding:1px 6px;border-radius:5px;background:var(--fill);color:var(--label2)}

/* Barra superior */
.topbar{position:sticky;top:0;z-index:20;height:calc(52px + env(safe-area-inset-top));padding-top:env(safe-area-inset-top);transition:background .25s,box-shadow .25s}
.topbar.scrolled{background:var(--bar);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);box-shadow:0 1px 0 var(--sep)}
.topbar-inner{max-width:720px;height:52px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;position:relative}
.topbar-title{position:absolute;left:50%;transform:translateX(-50%);font-size:17px;font-weight:600;opacity:0;transition:opacity .2s;white-space:nowrap}
.topbar.scrolled .topbar-title{opacity:1}
.circle-btn{width:36px;height:36px;border-radius:50%;background:var(--fill);color:var(--blue);display:grid;place-items:center;transition:transform .15s var(--ease)}
.circle-btn:active{transform:scale(.9)}
.counter{font-size:15px;font-weight:600;color:var(--label2);background:var(--fill);padding:6px 12px;border-radius:99px}

.large{max-width:720px;margin:0 auto;padding:0 20px 4px}
.large .date{font-size:13px;font-weight:600;color:var(--label2);text-transform:uppercase;letter-spacing:.02em}
.large h1{font-size:34px;font-weight:700;letter-spacing:-.03em;line-height:1.15;margin-top:2px}
.layout{max-width:720px;margin:0 auto;padding:0 20px}
.section-head{display:flex;align-items:baseline;justify-content:space-between;margin:30px 4px 10px}
.section-head h2{font-size:22px;font-weight:700;letter-spacing:-.025em}
.card{background:var(--card);border-radius:22px;box-shadow:var(--shadow)}

/* Tarjeta principal con anillo */
.hero{padding:20px 20px 22px;--goal:var(--blue)}
.hero-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.hero-id{min-width:0}
.hero-name{font-size:22px;font-weight:700;letter-spacing:-.025em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hero-sub{font-size:13px;color:var(--label2);margin-top:3px}
.pill{flex:none;font-size:13px;font-weight:600;padding:5px 11px;border-radius:99px;background:var(--fill);color:var(--label2);transition:background .3s,color .3s}
.pill.good{background:color-mix(in srgb,var(--green) 18%,transparent);color:var(--green-ink)}
.pill.mid{background:color-mix(in srgb,var(--orange) 18%,transparent);color:var(--orange-ink)}
.pill.bad{background:color-mix(in srgb,var(--red) 16%,transparent);color:var(--red-ink)}
.ring-wrap{position:relative;width:min(236px,66vw);aspect-ratio:1;margin:20px auto 22px}
.ring-wrap.pop{animation:pop .7s var(--ease)}
.ring{width:100%;height:100%;transform:rotate(-90deg);overflow:visible}
.ring circle{fill:none;stroke-width:22}
.ring .t{stroke:var(--goal);stroke-opacity:var(--track);transition:stroke .3s}
.ring .p{stroke-linecap:round;transition:stroke-dashoffset .9s var(--ease),stroke-opacity .2s}
.ring .s1{stop-color:color-mix(in srgb,var(--goal) 82%,#000)}
.ring .s2{stop-color:color-mix(in srgb,var(--goal) 78%,#fff)}
.ring-center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.ring-num{font-size:58px;font-weight:700;letter-spacing:-.045em;line-height:1}
.ring-sub{font-size:15px;color:var(--label2);margin-top:6px}
.hint{text-align:center;font-size:13px;color:var(--label2);margin-top:16px;min-height:17px}
.hint .link{font-size:15px;font-weight:600}
.wide{margin-top:4px;width:100%;height:50px;border-radius:14px;background:var(--blue);color:#fff;font-size:17px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:8px;transition:opacity .2s,transform .14s var(--ease),background .25s,color .25s}
.wide:active:not(:disabled){transform:scale(.98)}
.wide.soft{background:var(--fill);color:var(--blue);margin-top:10px}
.wide kbd{background:rgba(255,255,255,.22);color:#fff}
.wide.soft kbd{background:var(--fill);color:var(--blue)}

/* Segmented control */
.seg{position:relative;display:flex;height:34px;padding:2px;border-radius:9px;background:var(--fill);margin-bottom:16px}
.seg-thumb{position:absolute;top:2px;bottom:2px;left:2px;width:calc((100% - 4px) / var(--n,3));border-radius:7px;background:var(--thumb);box-shadow:var(--thumb-shadow);transform:translateX(calc(var(--i,0) * 100%));transition:transform .35s var(--ease)}
.seg button{position:relative;z-index:1;flex:1;border-radius:7px;font-size:13px;font-weight:600;font-variant-numeric:tabular-nums}
.seg button[aria-checked="false"]{color:var(--label2)}

/* Listas agrupadas */
.list{background:var(--card);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.row{display:flex;align-items:center;gap:14px;padding-left:16px;min-height:52px;position:relative;width:100%;text-align:left}
.row.tap{cursor:pointer;transition:background .15s}
.row.tap:hover{background:color-mix(in srgb,var(--fill) 45%,transparent)}
.row.tap:active{background:var(--fill)}
.row-main{flex:1;min-width:0;align-self:stretch;display:flex;align-items:center;gap:10px;padding:10px 16px 10px 0;border-top:1px solid var(--sep)}
.row:first-child .row-main{border-top:0}
.row-text{flex:1;min-width:0}
.row-title{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row-sub{font-size:13px;color:var(--label2);margin-top:2px;line-height:1.35}
.row-trail{display:flex;align-items:center;gap:6px;font-size:15px;color:var(--label2);font-variant-numeric:tabular-nums;white-space:nowrap}
.row-trail svg{color:var(--label3)}
.app-icon{flex:none;width:30px;height:30px;border-radius:8px;background:var(--c,var(--blue));color:#fff;display:grid;place-items:center}
.mini .t{fill:none;stroke:var(--goal);stroke-opacity:var(--track)}
.mini .p{fill:none;stroke:var(--goal);stroke-linecap:round}
.placeholder{padding:30px 20px 26px;text-align:center;color:var(--label2);font-size:15px;display:flex;flex-direction:column;align-items:center;gap:8px}
.placeholder svg{color:var(--label3)}
.switch{flex:none;width:51px;height:31px;border-radius:99px;background:var(--fill-strong);position:relative;transition:background .25s}
.switch::after{content:"";position:absolute;top:2px;left:2px;width:27px;height:27px;border-radius:50%;background:#fff;box-shadow:0 3px 8px rgba(0,0,0,.15),0 3px 1px rgba(0,0,0,.06);transition:transform .3s var(--ease)}
.switch[aria-checked="true"]{background:var(--green)}
.switch[aria-checked="true"]::after{transform:translateX(20px)}

/* Resumen */
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.tile{background:var(--card);border-radius:16px;box-shadow:var(--shadow);padding:14px 16px 15px;min-width:0}
.tile-head{display:flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--label2)}
.tile-head svg{color:var(--c)}
.tile-val{font-size:28px;font-weight:700;letter-spacing:-.035em;margin-top:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tile-val small{font-size:15px;font-weight:600;color:var(--label2);letter-spacing:-.01em;margin:0 2px 0 3px}
.tile-sub{font-size:13px;color:var(--label2);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tiles.four{grid-template-columns:repeat(4,1fr)}
@media (max-width:560px){.tiles.four{grid-template-columns:1fr 1fr}}

/* Pregunta */
.progress{display:flex;gap:3px;margin:10px 4px 0}
.progress span{flex:1;height:4px;border-radius:99px;background:var(--fill-strong);transition:background .25s}
.progress span.ok{background:var(--green)}
.progress span.ko{background:var(--red)}
.progress span.now{background:var(--blue)}
.q{padding:22px 20px 20px;text-align:center}
.q-top{display:flex;justify-content:space-between;align-items:center;gap:12px;text-align:left}
.q-person{font-size:13px;font-weight:600;padding:5px 11px;border-radius:99px;background:color-mix(in srgb,var(--blue) 14%,transparent);color:var(--blue)}
.q-form{font-size:clamp(34px,9vw,50px);font-weight:700;letter-spacing:-.04em;line-height:1.08;margin:34px 0 8px;word-break:break-word}
.q-form.bump{animation:bump .3s var(--ease)}
.q-inf{font-size:15px;color:var(--label2);min-height:20px;margin-bottom:30px}
.search{display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;border-radius:12px;background:var(--fill);transition:box-shadow .2s}
.search svg{flex:none;color:var(--label2)}
.search input{flex:1;min-width:0;border:0;outline:0;background:none;font:inherit;font-size:17px;color:var(--label);letter-spacing:inherit}
.search input::placeholder{color:var(--label3)}
.search:focus-within{box-shadow:0 0 0 3px color-mix(in srgb,var(--blue) 35%,transparent)}
.search.ok{box-shadow:0 0 0 3px color-mix(in srgb,var(--green) 55%,transparent)}
.search.ko{box-shadow:0 0 0 3px color-mix(in srgb,var(--red) 50%,transparent);animation:shake .35s}
.answer .wide{margin-top:12px}
.fb{display:flex;align-items:center;gap:12px;text-align:left;margin-top:16px;padding-top:14px;border-top:1px solid var(--sep);min-height:58px}
.fb[hidden]{display:none}
.fb .app-icon{border-radius:50%}
.fb-title{font-size:15px;font-weight:600}
.fb-sub{font-size:13px;color:var(--label2);margin-top:2px;line-height:1.35}
.fb.ok .fb-title{color:var(--green-ink)}
.fb.ko .fb-title{color:var(--red-ink)}
.fb.warn .fb-title{color:var(--orange-ink)}
.keys{text-align:center;font-size:13px;color:var(--label3);margin-top:14px}

/* Hoja modal */
.backdrop{position:fixed;inset:0;z-index:50;background:var(--backdrop);display:flex;align-items:flex-end;justify-content:center;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}
.backdrop.open{opacity:1;visibility:visible}
.sheet{width:100%;max-width:480px;max-height:92vh;overflow:auto;background:var(--bg);border-radius:14px 14px 0 0;padding:8px 0 calc(30px + env(safe-area-inset-bottom));transform:translateY(100%);transition:transform .5s var(--ease)}
.open .sheet{transform:none}
.grabber{width:36px;height:5px;border-radius:3px;background:var(--label3);margin:0 auto 4px}
@media (min-width:600px){
  .backdrop{align-items:center}
  .sheet{border-radius:16px;padding:10px 0 28px;transform:translateY(30px) scale(.97);opacity:0;transition:transform .45s var(--ease),opacity .25s}
  .open .sheet{transform:none;opacity:1}
  .grabber{display:none}
}
.sheet-nav{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:6px 16px 10px}
.sheet-nav h3{font-size:17px;font-weight:600}
.sheet-nav .link:last-child{justify-self:end;font-weight:600}
.group{background:var(--card);border-radius:12px;margin:0 16px;overflow:hidden}
.group .row{min-height:44px}
.group .row-main{padding:8px 16px 8px 0}
.group-label{font-size:13px;color:var(--label2);text-transform:uppercase;letter-spacing:.01em;padding:22px 32px 7px}
.group-foot{font-size:13px;color:var(--label2);padding:7px 32px 0;line-height:1.35}
.chips{display:flex;flex-wrap:wrap;gap:8px;padding:6px 16px 0}
.chip{font-size:13px;font-weight:600;padding:6px 12px;border-radius:99px;background:var(--fill);transition:background .2s,color .2s}
.chip[aria-pressed="true"]{background:var(--blue);color:#fff}
.help p{font-size:15px;padding:11px 16px;line-height:1.4;position:relative}
.help p + p::before{content:"";position:absolute;top:0;left:16px;right:0;height:1px;background:var(--sep)}
.help b{font-weight:600;color:var(--blue)}
.tab-seg{margin:6px 16px 0}
.tt{padding:11px 16px 12px;position:relative}
.tt + .tt::before{content:"";position:absolute;top:0;left:16px;right:0;height:1px;background:var(--sep)}
.tt-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px}
.tt-name{font-size:15px;font-weight:600}
.tt-bello{font-size:12px;color:var(--label2);white-space:nowrap}
.tt-forms{display:grid;grid-template-columns:repeat(4,1fr);gap:4px 8px;margin-top:8px}
.tt-forms span{font-size:13px;line-height:1.3}
.tt-forms small{display:block;font-size:11px;color:var(--label3)}
.tt-forms .aux{color:var(--blue);font-weight:600}
.tt-forms small.alt{font-size:12px;color:var(--label2);margin-top:1px}
.tt-ej{font-size:13px;color:var(--label2);margin-top:7px;font-style:italic}
.tt-ej b{font-style:normal;font-weight:600;color:var(--label)}
.imp-grid{display:grid;grid-template-columns:auto repeat(4,1fr);gap:9px 8px;padding:12px 16px;font-size:13px;align-items:baseline}
.imp-grid .h{font-size:11px;color:var(--label3)}
.imp-grid .p{color:var(--label2)}
@media (max-width:420px){.tt-forms{grid-template-columns:repeat(2,1fr)}}

/* Aviso tipo Dynamic Island */
.toast{position:fixed;top:10px;left:50%;z-index:70;display:flex;align-items:center;gap:10px;max-width:calc(100vw - 32px);padding:9px 18px 9px 10px;border-radius:99px;background:#000;color:#fff;font-size:15px;font-weight:600;box-shadow:0 12px 32px rgba(0,0,0,.22);transform:translate(-50%,-160%) scale(.9);visibility:hidden;transition:transform .55s var(--ease),visibility 0s .55s}
.toast.show{transform:translate(-50%,0) scale(1);visibility:visible;transition:transform .55s var(--ease)}
.toast .ic{flex:none;width:26px;height:26px;border-radius:50%;background:#30D158;display:grid;place-items:center}
.toast .ic.warn{background:#FF9F0A}
.toast .tx{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.foot{max-width:720px;margin:40px auto 0;padding:0 20px calc(40px + env(safe-area-inset-bottom));text-align:center;font-size:13px;color:var(--label3);line-height:1.45}

@keyframes bump{0%{transform:scale(1)}40%{transform:scale(1.06)}100%{transform:scale(1)}}
@keyframes pop{0%{transform:scale(1)}35%{transform:scale(1.06)}100%{transform:scale(1)}}
@keyframes shake{20%,60%{transform:translateX(-6px)}40%,80%{transform:translateX(6px)}}
@media (max-width:600px){.topbar-inner,.large,.layout,.foot{padding-left:16px;padding-right:16px}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}

/* Selector de juego (Verbos / Morfemas) */
.games{max-width:720px;margin:14px auto 0;padding:0 20px}
.games .seg{margin:0;--n:2}
.games .seg a{position:relative;z-index:1;flex:1;border-radius:7px;font-size:13px;font-weight:600;display:grid;place-items:center;text-decoration:none;color:var(--label)}
.games .seg a[aria-current="false"]{color:var(--label2)}
@media (max-width:600px){.games{padding-left:16px;padding-right:16px}}

/* Justificación de un fallo */
.porque{margin-top:14px;text-align:left;background:var(--fill);border-radius:14px;padding:12px 14px 13px}
.porque h4{font-size:12px;font-weight:700;color:var(--label2);text-transform:uppercase;letter-spacing:.03em}
.porque ul{margin:6px 0 0;padding-left:18px}
.porque li{font-size:14px;line-height:1.42;margin-top:5px}
.porque li::marker{color:var(--label3)}
.porque b{font-weight:600}
.progress span.mid{background:var(--orange)}

/* Transiciones entre pantallas, como al navegar en iOS */
@keyframes entra{from{opacity:0;transform:translateX(28px)}to{opacity:1;transform:none}}
@keyframes vuelve{from{opacity:0;transform:translateX(-28px)}to{opacity:1;transform:none}}
.entra{animation:entra .34s var(--ease)}
.vuelve{animation:vuelve .34s var(--ease)}
/* En pantallas táctiles, menos de 16px hace que el iPhone amplíe la página al enfocar */
@media (pointer:coarse){.tsel,select{font-size:16px}}
#qRepaso{background:color-mix(in srgb,var(--orange) 18%,transparent);color:var(--orange-ink)}
/* La animación de entrada no debe provocar desplazamiento lateral en el móvil */
body{overflow-x:clip}
/* Marca que delata el tiempo verbal en la corrección */
mark.marca{background:color-mix(in srgb,var(--orange) 26%,transparent);color:inherit;border-radius:5px;padding:0 2px}

/* Fallos desplegables en el resultado */
details.fallo summary{list-style:none;cursor:pointer}
details.fallo summary::-webkit-details-marker{display:none}
details.fallo .chev{color:var(--label3);transition:transform .25s var(--ease);flex:none}
details.fallo[open] .chev{transform:rotate(90deg)}
details.fallo + details.fallo summary .row-main{border-top:1px solid var(--sep)}
details.fallo .det{margin:0;padding:2px 16px 14px 60px;font-size:14px;line-height:1.42}
details.fallo ul.det,details.fallo .det ul{padding-left:18px}
details.fallo li{margin-top:5px}
details.fallo .det .morfos{justify-content:flex-start;margin-top:4px}
.det-modelo{font-size:13px;color:var(--label2);margin-top:8px}
@media (max-width:520px){details.fallo .det{padding-left:16px}}
.porque .ver-mas{font-size:14px;font-weight:600;margin-top:10px}
.tt.destaca{background:color-mix(in srgb,var(--orange) 16%,transparent);transition:background .4s}

/* ───────── Pantallas táctiles (iPhone, iPad) ───────── */
/* sin el retardo de iOS por el doble toque para ampliar */
button,a,summary,select,label,.switch{touch-action:manipulation}
@media (pointer:coarse){
  /* las pistas de teclado de ordenador no sirven en el móvil */
  kbd,.keys,.id-keys{display:none!important}
  /* enlaces de texto con zona de toque de 44 px, como pide Apple, sin mover el texto */
  .hint .link,.porque .ver-mas,#cpBtn{position:relative}
  .hint .link::after,.porque .ver-mas::after,#cpBtn::after{content:"";position:absolute;inset:-12px -8px}
}

.plantilla{font-size:14px;font-weight:600;margin:8px 2px 4px}
details.fallo .ver-mas{display:inline-block;font-size:14px;font-weight:600;margin-top:8px;text-decoration:none}