:root{--bg:#020d18;--surface:#061829;--surface2:#082239;--line:#14517d;--text:#f5f8ff;--muted:#a9c0dd;--blue:#087dff;--cyan:#16b6ff;--green:#10e5a1;--purple:#b130f2;--gold:#ffba00;--red:#ff5f73;--shadow:0 14px 40px rgba(0,0,0,.35)}
*{box-sizing:border-box}html{font-family:Inter,"Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--text)}body{margin:0;min-width:320px;background:radial-gradient(circle at 58% 0,#07325d55,transparent 35%),linear-gradient(135deg,#03111f,#020913 70%);min-height:100vh}button,input{font:inherit}button{color:inherit}.topbar{height:78px;padding:0 24px;display:flex;align-items:center;gap:28px;border-bottom:1px solid #16466a;background:#031426e8;position:sticky;top:0;z-index:20;backdrop-filter:blur(14px)}.brand{display:flex;align-items:center;gap:11px;color:white;text-decoration:none;min-width:410px}.brand-mark{display:grid;place-items:center;width:45px;height:39px;background:linear-gradient(135deg,#28e0ff,#086dff);clip-path:polygon(50% 0,100% 25%,88% 77%,50% 100%,12% 77%,0 25%);font-weight:900}.brand strong{font-size:1.25rem}.brand small,.hello small{display:block;color:#9ec6f7;font-size:.66rem;margin-top:5px}.search{height:44px;max-width:520px;flex:1;border:1px solid #2674ac;border-radius:30px;display:flex;align-items:center;gap:12px;padding:0 18px;position:relative}.search input{width:100%;background:none;border:0;outline:0;color:white;font-size:.9rem}.search-results{position:absolute;top:50px;left:0;right:0;background:#072039;border:1px solid var(--line);border-radius:13px;padding:7px;box-shadow:var(--shadow)}.search-results button{display:block;width:100%;padding:10px;text-align:left;background:none;border:0;border-radius:8px}.search-results button:hover{background:#0c3b64}.top-progress{margin-left:auto;display:flex;align-items:center;gap:24px;color:#d6e7ff;font-size:.78rem}.avatar{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:linear-gradient(145deg,#0a7cff,#003b91);border:1px solid #22b8ff;font-size:1rem}.shell{display:grid;grid-template-columns:190px minmax(0,1fr)}.sidebar{border-right:1px solid #123f60;min-height:calc(100vh - 78px);padding:22px 10px;display:flex;flex-direction:column}.sidebar nav{display:grid;gap:7px}.sidebar button{border:0;background:transparent;text-align:left;padding:14px 17px;border-radius:10px;color:#bfd7ff;cursor:pointer}.sidebar button span{display:inline-block;width:28px;font-size:1.2rem}.sidebar button:hover,.sidebar button.active{background:linear-gradient(90deg,#087cff,#0045bd);box-shadow:0 0 20px #008cff66;color:white}.sidebar blockquote{margin:auto 0 20px;text-align:center;font:italic 1.15rem Georgia;color:#b8cff4;line-height:1.35}.side-logo{color:#118cff;font-size:2rem}.side-logo span{font-size:.75rem;color:#b9cee9;vertical-align:middle}main{padding:12px;min-width:0}.panel{border:1px solid var(--line);border-radius:13px;background:linear-gradient(145deg,#061c30dd,#031322dd);box-shadow:inset 0 1px 0 #ffffff08}.verb-hero{display:grid;grid-template-columns:minmax(350px,1.6fr) 270px 190px 325px;min-height:188px;overflow:hidden}.verb-hero>*{padding:18px 21px}.verb-identity{display:flex;align-items:center;gap:20px}.verb-symbol{width:95px;height:95px;display:grid;place-items:center;border-radius:50%;border:3px solid #1fd8ff;box-shadow:0 0 24px #008cff, inset 0 0 18px #0377dc;font-size:2.8rem;font-weight:900}.breadcrumb{font-size:.8rem;color:#ccdcf1;margin-bottom:6px}.breadcrumb span{color:#6da1d2;margin:0 5px}.verb-identity h1{margin:0;font-size:3.2rem;line-height:1}.verb-identity p{margin:4px 0;font-size:1.15rem}.verb-identity em{color:#8bb6e6;font-size:.9rem}.badges{display:flex;gap:7px;margin-top:12px}.badges span,.sentence-badges span{border:1px solid #286492;border-radius:20px;padding:5px 11px;font-size:.7rem}.progress-card{display:flex;align-items:center;gap:18px}.progress-ring{--p:0deg;width:105px;aspect-ratio:1;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle,#071b2e 55%,transparent 57%),conic-gradient(var(--green) var(--p),#173f61 0);border:1px solid #286286}.progress-ring strong{font-size:1.55rem}.progress-card span,.progress-card small{display:block;color:#abc8ed;font-size:.78rem}.progress-card b{display:block;border-top:1px solid #225076;margin-top:10px;padding-top:10px}.verb-hero>blockquote{margin:0;border-left:1px solid var(--line);border-right:1px solid var(--line);color:#c8dcff;font-size:1.05rem;line-height:1.45}.verb-hero>blockquote:before{content:'“';display:block;color:#91b6f1;font-size:2.2rem}.forms h2,.related h2,.filters h2{margin:0 0 12px;font-size:.88rem}.forms #formsGrid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.forms span{display:grid;place-items:center;height:53px;border:1px solid #174f79;border-radius:10px;background:#08223a;font-size:1rem;font-weight:700}.filters{margin-top:10px;padding:11px 20px}.filter-head{display:flex;justify-content:space-between;align-items:center}.filter-head button{background:#08223a;border:1px solid #174f79;border-radius:9px;padding:9px 15px;cursor:pointer}.filter-row{display:flex;align-items:center;gap:8px;margin:8px 0}.filter-row>span{width:105px;font-size:.78rem;color:#c6daf4}.filter-row div{display:flex;gap:7px;flex-wrap:wrap}.filter-chip{border:1px solid #235d88;background:#06182a;padding:7px 17px;border-radius:9px;font-size:.72rem;cursor:pointer}.filter-chip.active{background:linear-gradient(#0f8eff,#0362dd);border-color:#21c9ff;box-shadow:0 0 12px #008cff88}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:10px;margin-top:10px}.sentence-panel{padding:18px}.sentence-top{display:flex;align-items:center;justify-content:space-between;padding:0 30px}.sentence-badges{display:flex;gap:7px;margin-left:auto;margin-right:18px}.sentence-badges span:nth-child(1){color:#e391ff;border-color:#65218c;background:#35105b}.sentence-badges span:nth-child(2){color:#42efbd;border-color:#008b62;background:#004c3b}.star{font-size:2rem;border:0;background:none;cursor:pointer;color:#8dc1ff}.star.saved{color:var(--gold)}.sentence-stage{min-height:145px;display:grid;grid-template-columns:48px 1fr 48px;gap:24px;align-items:center;text-align:center}.round{width:48px;height:48px;border-radius:50%;border:1px solid #2674aa;background:#06213b;font-size:2rem;cursor:pointer}.english{margin:0;font-size:2.3rem;font-weight:700}.english mark{color:white;background:linear-gradient(#0b8dff,#035ce2);border-radius:8px;padding:0 8px;box-shadow:0 0 15px #008eff88}.spanish{font-size:1.2rem;color:#b4cff1;margin:10px 0 0}.study-actions{display:flex;justify-content:center;gap:20px}.study-actions button,.sentence-nav button{min-width:178px;border:1px solid #2270aa;border-radius:13px;background:#06213a;padding:12px 18px;cursor:pointer}.study-actions button:hover,.sentence-nav button:hover{background:#0a3d68}.sentence-panel dl{display:grid;grid-template-columns:repeat(6,1fr);background:#071f35;border:1px solid #194e74;border-radius:11px;margin:15px 0;padding:10px}.sentence-panel dl div{padding:0 16px;border-right:1px solid #205277}.sentence-panel dl div:last-child{border:0}.sentence-panel dt{font-size:.65rem;color:#99bade}.sentence-panel dd{margin:4px 0 0;font-size:.75rem}.sentence-nav{display:flex;justify-content:space-between;gap:10px}.primary{background:linear-gradient(#0e8dff,#075de0)!important;border-color:#28d4ff!important;box-shadow:0 0 15px #047fff66}.related{padding:16px 12px}.related-item{width:100%;display:grid;grid-template-columns:36px 1fr 20px;text-align:left;align-items:center;padding:9px;border:0;border-bottom:1px solid #1c4668;background:#092138;color:white;cursor:pointer}.related-item small{display:block;color:#94afd1;margin-top:3px}.full{width:100%;border-radius:10px;border:1px solid #28d4ff;color:white;padding:13px;margin-top:10px;cursor:pointer}.mode-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:10px}.mode-card{min-height:125px;border-radius:13px;border:1px solid currentColor;background:#061728;padding:14px;color:white;text-align:left;display:grid;grid-template-columns:50px 1fr;gap:8px;cursor:pointer}.mode-card>span{font-size:2.3rem}.mode-card b,.mode-card small{display:block}.mode-card small{color:#c1d2e9;margin-top:7px}.mode-card strong{grid-column:1/-1;text-align:center;padding:9px;border-radius:9px;background:currentColor;color:white}.green{color:#20e8aa;background:#032d25}.blue{color:#178dff;background:#06233d}.purple{color:#ce47ff;background:#281041}.gold{color:#ffc000;background:#352700}.mode-panel{margin-top:10px;padding:22px}.mode-panel h2{margin-top:0}.practice-question{text-align:center;font-size:1.6rem}.practice-input{display:block;max-width:650px;width:100%;margin:18px auto;padding:14px;border:1px solid #2685c6;border-radius:10px;background:#041525;color:white}.practice-actions{display:flex;justify-content:center;gap:10px}.practice-actions button{padding:11px 22px;border:1px solid #2584c7;border-radius:10px;background:#07345b}.feedback{text-align:center;min-height:30px;margin-top:14px}.pattern-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.pattern-card{padding:16px;border:1px solid #245b85;border-radius:10px;background:#082038}.toast{position:fixed;right:20px;bottom:20px;padding:12px 20px;background:#0b416b;border:1px solid #28baff;border-radius:10px;opacity:0;transform:translateY(20px);transition:.2s;pointer-events:none}.toast.show{opacity:1;transform:none}footer{padding:20px;text-align:center;color:#6f8cab;font-size:.72rem}footer span{float:right}
@media(max-width:1250px){.verb-hero{grid-template-columns:1.4fr 260px 280px}.verb-hero>blockquote{display:none}.top-progress span:not(.avatar){display:none}.brand{min-width:auto}.workspace{grid-template-columns:1fr}.related{display:none}.mode-cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:850px){.topbar{height:68px;padding:0 12px}.brand small,.brand strong,.hello{display:none}.search{max-width:none}.shell{display:block}.sidebar{min-height:auto;border:0;border-bottom:1px solid #17486a;padding:7px;position:sticky;top:68px;z-index:19;background:#031426}.sidebar nav{display:flex;overflow:auto}.sidebar button{white-space:nowrap;padding:10px}.sidebar blockquote,.side-logo{display:none}.verb-library{margin:7px 0 0;padding-top:7px}.verb-library h2{display:none}.verb-list{display:flex;overflow:auto;gap:7px}.verb-list button{width:auto;flex:0 0 auto}.verb-hero{grid-template-columns:1fr 1fr}.progress-card{border-left:1px solid var(--line)}.forms{grid-column:1/-1}.filters{overflow:auto}.filter-row{min-width:760px}.sentence-panel dl{grid-template-columns:repeat(3,1fr);gap:12px}.sentence-panel dl div:nth-child(3){border:0}.mode-cards{grid-template-columns:1fr 1fr}}
@media(max-width:560px){main{padding:7px}.verb-hero{display:block}.progress-card{border:0;border-top:1px solid var(--line)}.verb-identity{padding:14px}.verb-symbol{width:70px;height:70px}.verb-identity h1{font-size:2.35rem}.filters{display:block;overflow:visible}.filter-row{min-width:0;align-items:flex-start;flex-direction:column}.filter-row>span{width:auto;font-weight:700}.sentence-panel{padding:12px}.sentence-top{padding:0}.sentence-badges{display:none}.sentence-stage{grid-template-columns:38px 1fr 38px;gap:7px}.round{width:38px;height:38px}.english{font-size:1.55rem}.spanish{font-size:1rem}.study-actions{gap:6px}.study-actions button{min-width:0;flex:1;padding:10px 4px;font-size:.75rem}.sentence-panel dl{grid-template-columns:repeat(2,1fr)}.sentence-panel dl div{border:0}.sentence-nav button{min-width:0;padding:10px 7px;font-size:.72rem}.mode-cards{grid-template-columns:1fr}.pattern-grid{grid-template-columns:1fr}footer span{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* Reproductor visual del bloque inmersivo. */
.verb-library{margin-top:18px;padding:16px 7px 0;border-top:1px solid #123f60}.verb-library h2{margin:0 10px 9px;color:#7fa8d5;font-size:.68rem;letter-spacing:.12em;text-transform:uppercase}.verb-list{display:grid;gap:6px}.verb-list button{width:100%;padding:10px 12px;border:1px solid #174f79;border-radius:9px;background:#06192b;color:#c9ddf8;text-align:left;cursor:pointer}.verb-list button small{display:block;margin-top:3px;color:#7598bd;font-size:.65rem}.verb-list button:hover{border-color:#1caeff;background:#092943}.verb-list button.active{border-color:#29d5ff;background:linear-gradient(90deg,#087cff,#0045bd);box-shadow:0 0 16px #008cff55;color:#fff}.verb-list button.active small{color:#d8ecff}
.immersion-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin-bottom:16px}.immersion-heading h2{margin:0 0 8px}.immersion-heading p{margin:0;color:var(--muted)}.immersion-console{min-width:440px;padding:11px 13px;border:1px solid #2876a5;border-radius:12px;background:linear-gradient(145deg,#082a46,#061a2e);display:grid;grid-template-columns:auto minmax(135px,1fr);gap:8px 12px;align-items:end;box-shadow:0 10px 25px #0004}.immersion-buttons{display:flex;gap:7px}.immersion-console button{min-height:38px;padding:0 14px;border:1px solid #2876a5;border-radius:9px;background:#082842;color:white;cursor:pointer}.immersion-console button:hover{filter:brightness(1.18)}.immersion-console .audio-primary{background:linear-gradient(135deg,#078cff,#075edc);border-color:#30d9ff}.immersion-console .audio-stop{border-color:#a3485c;color:#ffb2be}.immersion-console label{display:grid;gap:4px;color:#b5cce5;font-size:.75rem}.immersion-console select{height:38px;border:1px solid #2876a5;border-radius:8px;background:#061b30;color:white;padding:0 9px}.immersion-console strong{grid-column:1/-1;color:#51e7bd;font-size:.78rem}.immersion-card{--tone:#19b7ff;position:relative;border-color:color-mix(in srgb,var(--tone) 58%,#174f79);overflow:hidden;transition:transform .2s,box-shadow .2s,border-color .2s,background .2s}.immersion-card:before{content:'';position:absolute;inset:0 auto 0 0;width:4px;background:var(--tone);opacity:.7}.immersion-card.is-speaking{transform:translateY(-3px) scale(1.012);border-color:var(--tone);background:linear-gradient(135deg,color-mix(in srgb,var(--tone) 26%,#082038),#082038);box-shadow:0 0 0 2px color-mix(in srgb,var(--tone) 50%,transparent),0 0 28px color-mix(in srgb,var(--tone) 45%,transparent)}.immersion-card.is-speaking:after{content:'▶ ESCUCHANDO';position:absolute;right:12px;top:10px;color:var(--tone);font-size:.68rem;font-weight:800;letter-spacing:.04em}.tone-1{--tone:#20dfff}.tone-2{--tone:#168bff}.tone-3{--tone:#6d72ff}.tone-4{--tone:#b454ff}.tone-5{--tone:#ef4fe2}.tone-6{--tone:#ff507d}.tone-7{--tone:#ff7f41}.tone-8{--tone:#ffc928}.tone-9{--tone:#73df45}.tone-10{--tone:#10e5a1}
@media(max-width:850px){.immersion-heading{display:grid}.immersion-console{min-width:0;width:100%}}
@media(max-width:560px){.immersion-console{grid-template-columns:1fr}.immersion-buttons{display:grid;grid-template-columns:repeat(3,1fr)}.immersion-console button{padding:0 7px}.immersion-console strong{grid-column:auto}.immersion-card.is-speaking:after{position:static;display:block;margin:8px 0 0}}

/* Visor principal ampliado y lista dinámica del rango. */
.sentence-panel{display:flex;flex-direction:column;min-height:0}.sentence-stage{flex:1;min-height:230px}.sentence-panel .repeat-console{margin-bottom:0}.related{display:flex;flex-direction:column;min-height:0;padding:16px 12px}.related h2{margin-bottom:3px}.range-list-summary{margin:0 8px 10px;color:#83b4df;font-size:.78rem}.related #relatedList{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;border:1px solid #173f60;border-radius:9px;scrollbar-color:#168cff #061728;scrollbar-width:thin}.related-item{min-height:68px;grid-template-columns:42px minmax(0,1fr) 20px;border-radius:0}.related-item>span:first-child{font-weight:800;color:#d8eaff}.related-item.active{position:relative;background:linear-gradient(90deg,#086de0,#08345d);box-shadow:inset 4px 0 #31e0ff}.related-item.active>span:first-child{color:#fff}.related-item:hover{background:#0b3457}
@media(min-width:1251px){.workspace{height:650px;align-items:stretch}}
@media(max-width:1250px){.related{display:flex;max-height:520px}.workspace{grid-template-columns:1fr}.sentence-stage{min-height:210px}}

/* Configuración completa del entrenamiento acumulativo. */
.repeat-controls{grid-template-columns:repeat(7,minmax(105px,1fr))}.audio-actions .audio-primary:disabled{opacity:.72;cursor:progress;filter:saturate(.7)}
@media(max-width:1250px){.repeat-controls{grid-template-columns:repeat(4,1fr)}}
@media(max-width:850px){.repeat-controls{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.repeat-controls{grid-template-columns:1fr}}

/* Sesión de repetición: TTS del navegador, sin archivos de audio. */
.repeat-console{margin:0 0 16px;border:1px solid #17618e;border-radius:13px;background:linear-gradient(145deg,#071e33,#041522);overflow:hidden}.repeat-console-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 15px;border-bottom:1px solid #174d70}.repeat-console-head h2{font-size:.92rem;margin:0}.repeat-console-head p{font-size:.7rem;color:var(--muted);margin:4px 0 0}.audio-status{font-size:.7rem;color:var(--green);white-space:nowrap}.audio-status.error{color:var(--red)}.repeat-controls{display:grid;grid-template-columns:1.15fr repeat(3,1fr);gap:9px;padding:12px 15px}.repeat-controls label{display:grid;gap:5px;color:#a9c5e2;font-size:.68rem}.repeat-controls select,.repeat-controls input{height:36px;width:100%;border:1px solid #24658f;border-radius:8px;background:#08253d;color:white;padding:0 9px;outline:0}.repeat-controls select:focus,.repeat-controls input:focus{border-color:#23d6ff}.range-inputs{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:6px}.range-inputs i{font-style:normal}.session-progress{padding:0 15px 11px}.session-progress-bar{height:5px;background:#153b57;border-radius:20px;overflow:hidden}.session-progress-bar i{display:block;width:0;height:100%;background:linear-gradient(90deg,#087dff,#20d8ff);transition:width .25s}.session-progress>div:last-child{display:flex;justify-content:space-between;gap:10px;color:#91aecb;font-size:.66rem;margin-top:6px}.session-progress strong{color:#29d9f7}.audio-actions{display:flex;justify-content:center;gap:8px;padding:0 15px 13px}.audio-actions button{min-height:38px;padding:0 14px;border:1px solid #2876a5;border-radius:9px;background:#082842;color:white;cursor:pointer}.audio-actions button:hover{background:#0b3d64}.audio-actions .audio-primary{background:linear-gradient(135deg,#078cff,#075edc);border-color:#30d9ff;box-shadow:0 0 15px #0581ff55}.audio-actions .audio-stop{border-color:#814052;color:#ff9aaa}.audio-actions button:disabled{opacity:.45;cursor:not-allowed}
@media(max-width:850px){.repeat-controls{grid-template-columns:1fr 1fr}.audio-actions{flex-wrap:wrap}}
@media(max-width:560px){.repeat-console-head{align-items:flex-start}.audio-status{font-size:.62rem}.repeat-controls{grid-template-columns:1fr;padding:11px}.session-progress>div:last-child{display:grid}.audio-actions button{flex:1;min-width:125px}.repeat-console-head p{display:none}}

/* En dispositivos táctiles se oculta la lista lateral de frases.
   Evita saltos de desplazamiento durante la reproducción, también en horizontal. */
@media(hover:none) and (pointer:coarse){
  .workspace{grid-template-columns:minmax(0,1fr)!important}
  .related{display:none!important}
}

/* Móvil: controles muy compactos y la frase como elemento principal. */
@media(max-width:560px){
  .sentence-panel{padding:8px}
  .sentence-stage{min-height:210px;gap:5px}
  .sentence-stage>div{min-width:0}
  .english{font-size:1.85rem;line-height:1.2}
  .spanish{font-size:1.05rem}
  .repeat-console{margin:0;border-radius:9px}
  .repeat-console-head{padding:6px 8px;gap:5px;align-items:center}
  .repeat-console-head h2{font-size:.68rem;line-height:1.1;margin:0}
  .repeat-console-head p{display:none}
  .audio-status{max-width:48%;overflow:hidden;text-overflow:ellipsis;font-size:.55rem}
  .repeat-controls{grid-template-columns:repeat(2,minmax(0,1fr));gap:5px 6px;padding:7px 8px}
  .repeat-controls label{gap:2px;font-size:.56rem;min-width:0}
  .repeat-controls select,.repeat-controls input{height:29px;padding:0 6px;border-radius:6px;font-size:.68rem}
  .session-progress{padding:0 8px 6px}
  .session-progress>div:last-child{display:block;margin-top:3px;font-size:.52rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .session-progress strong{display:none}
  .audio-actions{display:grid;grid-template-columns:1fr 1fr;gap:5px;padding:0 8px 7px}
  .audio-actions button{min-width:0;min-height:30px;padding:0 5px;border-radius:6px;font-size:.62rem}
  .audio-actions .audio-stop{grid-column:1/-1;min-height:27px}
}

/* Navegación lateral modular y compacta */
.sidebar{padding:14px 9px;gap:9px}
.sidebar nav{display:grid;gap:9px}
.side-module{overflow:hidden;border:1px solid #123f60;border-radius:12px;background:linear-gradient(145deg,#071d31cc,#041321cc);box-shadow:inset 0 1px 0 #ffffff08}
.sidebar .side-module-toggle{display:grid;width:100%;grid-template-columns:24px 1fr 18px;align-items:center;gap:7px;padding:10px 11px;border:0;border-radius:0;background:transparent;color:#83b8e9;text-transform:uppercase;letter-spacing:.13em;box-shadow:none;font-size:.68rem}
.sidebar .side-module-toggle:hover{background:#0a2942;color:#bfe7ff;box-shadow:none}
.sidebar .side-module-toggle span{width:auto;color:#42cfff;font-size:.95rem}
.sidebar .side-module-toggle b{font-size:inherit;text-align:left}
.sidebar .side-module-toggle i{font-style:normal;color:#56cfff;transition:transform .18s ease}
.sidebar .side-module-toggle[aria-expanded="false"] i{transform:rotate(180deg)}
.side-module-content{display:grid;gap:3px;padding:0 7px 8px}
.side-module-content[hidden]{display:none}
.sidebar .side-module-content button{position:relative;width:100%;padding:9px 10px;border:1px solid transparent;border-radius:8px;font-size:.78rem}
.sidebar .side-module-content button span{width:25px;font-size:1rem}
.sidebar .side-module-content button:hover{background:#0a304f;box-shadow:none}
.sidebar .side-module-content button.active{border-color:#16bfff;background:linear-gradient(90deg,#073c61,#08263f);box-shadow:inset 3px 0 #1dd9ff,0 0 13px #008cff2e;color:#fff}
.verb-library{margin-top:0;padding:0;border-top:0;min-height:0}
.verb-library-search{display:flex;align-items:center;gap:7px;margin:0 8px 7px;padding:0 9px;height:32px;border:1px solid #235b83;border-radius:8px;background:#061728}
.verb-library-search[hidden]{display:none}
.verb-library-search span{color:#8ab5dc}
.verb-library-search input{width:100%;min-width:0;border:0;outline:0;background:transparent;color:#fff;font-size:.7rem}
.verb-library-search input::placeholder{color:#7297ba}
.verb-list{display:block;max-height:260px;overflow-y:auto;padding:0 7px 7px}
.verb-list[hidden]{display:none}
.verb-list button{min-height:43px;padding:7px 9px 7px 15px}
.verb-list button:before{top:7px;bottom:7px}
.verb-list button b{font-size:.75rem}
.verb-list button small{margin-top:2px;font-size:.6rem}
.sidebar blockquote{margin:auto 0 10px;font-size:.9rem}
.side-logo{font-size:1.45rem}
.side-logo span{font-size:.65rem}

@media(min-width:851px){
  .shell{grid-template-columns:210px minmax(0,1fr)}
  .verb-list-toggle{display:grid}
}

/* Acordeón móvil: filtros, verbos y práctica sin panel inferior flotante. */
.mobile-accordion,.mobile-listen{display:none}
@media(max-width:700px){
  body{background:radial-gradient(circle at 50% 12%,#07365c88,transparent 38%),linear-gradient(180deg,#031424,#020b14)}
  .topbar{position:relative;height:76px;padding:0 16px;gap:10px;background:#031426;border-bottom:1px solid #17628f}
  .brand{min-width:0;flex:1}.brand-mark{width:42px;height:38px}.brand strong{display:block;font-size:1rem;white-space:nowrap}.brand small{display:block;font-size:.48rem;white-space:nowrap}
  .search{display:none}.top-progress{margin-left:auto;gap:10px}.top-progress>span:not(.avatar){display:none}.avatar{width:43px;height:43px}
  .shell{display:block}.sidebar{display:none}main{padding:12px 10px 28px}
  .verb-hero,.mode-cards,footer{display:none!important}
  .mobile-accordion{display:grid;gap:9px;margin-bottom:9px}
  .mobile-accordion-head{width:100%;min-height:78px;display:grid;grid-template-columns:54px minmax(0,1fr) 28px;align-items:center;gap:12px;padding:10px 14px;border:1px solid #1b74a8;border-radius:14px;background:linear-gradient(145deg,#07233b,#041522);color:#fff;text-align:left;box-shadow:inset 0 1px #ffffff09;cursor:pointer}
  .mobile-accordion-head.is-open{border-color:#1ea8e8;background:linear-gradient(145deg,#082b48,#06192a)}
  .mobile-step{width:48px;height:48px;display:grid;place-items:center;border-radius:50%;background:linear-gradient(145deg,#28dfff,#0875f4);box-shadow:0 0 17px #079dff66;font-size:1.55rem;font-weight:900}
  .mobile-section-copy{min-width:0;display:grid;gap:5px}.mobile-section-copy>b{font-size:1.3rem}.mobile-section-copy>small{display:flex;gap:6px;align-items:center;min-width:0;color:#9fc2e5;font-size:.73rem;overflow:hidden;white-space:nowrap}
  .mobile-section-copy small i{padding:4px 9px;border:1px solid #1a6999;border-radius:999px;color:#c7e1fb;font-style:normal}
  .mobile-section-copy small i:nth-child(1){border-color:#8b2bb0;color:#ee83ff;background:#351052}.mobile-section-copy small i:nth-child(2){border-color:#008e68;color:#4df0bd;background:#003f34}
  .mobile-chevron{font-size:1.45rem;text-align:center;color:#59cfff}.mobile-verb-section{display:grid;gap:7px}
  .mobile-verb-list{max-height:310px;overflow-y:auto;padding:7px;border:1px solid #1b74a8;border-radius:13px;background:#031525}
  .mobile-verb-list button{width:100%;display:flex;justify-content:space-between;align-items:center;min-height:48px;padding:8px 13px;border:0;border-bottom:1px solid #164765;background:transparent;color:#fff;text-align:left}
  .mobile-verb-list button:last-child{border-bottom:0}.mobile-verb-list button.active{border-radius:8px;background:linear-gradient(90deg,#087cff,#074a91);box-shadow:inset 4px 0 #30e1ff}.mobile-verb-list small{color:#9fc2e5}
  #filtersPanel{margin:0 0 9px;padding:14px;border-color:#1b74a8}.filter-head h2{font-size:1.05rem}.filter-head button{padding:8px 11px}.filter-row{min-width:0;margin:15px 0;align-items:flex-start;flex-direction:column}.filter-row>span{width:auto;font-size:.82rem;font-weight:800}.filter-row div{gap:8px}.filter-chip{min-height:40px;padding:8px 14px;border-radius:10px;font-size:.78rem}
  .mobile-collapsed{display:none!important}
  .workspace{display:block;margin:0}.related{display:none!important}.sentence-panel{padding:14px 10px 12px;border-color:#1d83ba;border-radius:15px;background:linear-gradient(145deg,#061f35,#031321)}
  .sentence-top{padding:0 4px;align-items:flex-start}.sentence-top>span{max-width:calc(100% - 50px);font-size:.78rem;color:#acc9e7;line-height:1.45}.sentence-badges{display:none}.star{font-size:2.2rem;line-height:1}
  .sentence-stage{min-height:350px;display:grid;grid-template-columns:1fr 1.18fr 1fr;grid-template-areas:"phrase phrase phrase" "prev listen next";gap:18px 14px;padding:18px 6px 24px;align-items:center}
  .sentence-stage>div{grid-area:phrase;align-self:center;min-width:0}.sentence-stage #prevBtn{grid-area:prev}.sentence-stage #nextBtn{grid-area:next}.sentence-stage .round{justify-self:center;width:66px;height:66px;border:2px solid #158ad0;background:#06243d;font-size:2.8rem;line-height:1}
  .mobile-listen{grid-area:listen;display:grid;place-items:center;justify-self:center;width:88px;height:88px;border:2px solid #29e3ff;border-radius:50%;background:linear-gradient(145deg,#10adff,#0755f2);box-shadow:0 0 25px #008cff88;color:#fff;font-size:2rem;cursor:pointer}
  .english{font-size:clamp(2.15rem,10vw,3.35rem);line-height:1.24;letter-spacing:-.03em}.english mark{padding:2px 10px;border-radius:10px}.spanish{margin-top:18px;font-size:1.22rem;line-height:1.4;color:#bad5f4}
  .repeat-console{margin:0;border-color:#1c78aa;border-radius:13px}.repeat-console-head{padding:14px 12px;align-items:flex-start}.repeat-console-head h2{font-size:1.05rem}.repeat-console-head p{display:block;margin-top:6px;font-size:.7rem}.audio-status{font-size:.62rem}
  .repeat-controls{grid-template-columns:1fr 1fr;padding:13px 11px;gap:12px 10px}.repeat-controls label{font-size:.72rem}.repeat-controls input,.repeat-controls select{height:46px;font-size:.9rem;border-radius:9px}
  .session-progress{padding:0 11px 13px}.session-progress>div:last-child{display:grid;gap:4px;font-size:.68rem}.audio-actions{display:grid;grid-template-columns:1fr auto;padding:0 11px 12px;gap:9px}.audio-actions #listenOnceBtn{display:none}.audio-actions .audio-primary{min-height:54px;font-size:1rem;font-weight:800}.audio-actions .audio-stop{min-width:82px;min-height:54px}
}

@media(max-width:850px){
  .sidebar{display:grid;grid-template-columns:1fr 1fr;gap:7px;align-items:start}
  .sidebar nav{display:grid;grid-template-columns:1fr 1fr;gap:7px;overflow:visible}
  .sidebar .side-module-toggle{display:grid}
  .side-module-content{display:grid;position:static}
  .side-module-content[hidden]{display:none}
  .verb-library{margin:0;padding:0;border:1px solid #123f60}
  .verb-library-search{display:flex}
  .verb-library-search[hidden],.verb-list[hidden]{display:none}
  .verb-list{position:static;max-height:190px;padding:0 7px 7px;border:0;background:transparent;box-shadow:none}
}

@media(max-width:560px){
  .sidebar{grid-template-columns:1fr}
  .sidebar nav{grid-template-columns:1fr 1fr}
  .verb-library{grid-column:1/-1}
}

/* Lista lateral compacta y escalable para muchos verbos. */
@media(min-width:851px){
  .shell{grid-template-columns:240px minmax(0,1fr)}
  .verb-library{margin-top:18px;padding:15px 0 0;border-top:1px solid #123f60;min-height:0}
  .verb-library h2{margin:0 12px 10px;color:#7fa8d5;font-size:.7rem;letter-spacing:.12em;text-transform:uppercase}
  .verb-library h2:after{content:'  ▾';color:#20cfff}
  .verb-list{display:block;max-height:360px;overflow-y:auto;overflow-x:hidden;padding-right:4px;scrollbar-width:thin;scrollbar-color:#148cff #061525}
  .verb-list::-webkit-scrollbar{width:7px}
  .verb-list::-webkit-scrollbar-track{background:#061525;border-radius:8px}
  .verb-list::-webkit-scrollbar-thumb{background:linear-gradient(#18cfff,#075fe0);border-radius:8px}
  .verb-list button{position:relative;width:100%;padding:11px 13px 11px 18px;border:0;border-bottom:1px solid #123f60;border-radius:0;background:transparent;color:#c9ddf8;text-align:left;cursor:pointer;transition:background .18s,color .18s,padding-left .18s}
  .verb-list button:before{content:'';position:absolute;left:4px;top:10px;bottom:10px;width:3px;border-radius:4px;background:#168bff;opacity:.55}
  .verb-list button:nth-child(3n+2):before{background:#b454ff}
  .verb-list button:nth-child(3n):before{background:#10e5a1}
  .verb-list button b{font-size:.82rem;letter-spacing:.025em}
  .verb-list button small{display:block;margin-top:3px;color:#7598bd;font-size:.65rem}
  .verb-list button:hover{padding-left:23px;border-color:transparent;background:linear-gradient(90deg,#0b3d67aa,transparent);color:#fff}
  .verb-list button.active{padding-left:23px;border-color:transparent;background:linear-gradient(90deg,#087cff,#06499ddd 72%,transparent);box-shadow:inset 3px 0 #26dcff;color:#fff}
  .verb-list button.active:before{background:#56efff;opacity:1;box-shadow:0 0 9px #1fdcff}
  .verb-list button.active small{color:#d8ecff}
}

.verb-list-toggle{display:none}
@media(max-width:560px){
  .verb-library{position:relative;margin:6px 0 0;padding:6px 0 0;border-top:1px solid #123f60}
  .verb-list-toggle{display:grid;width:100%;height:38px;grid-template-columns:auto 1fr auto;align-items:center;gap:8px;padding:0 11px;border:1px solid #2182bd;border-radius:8px;background:linear-gradient(135deg,#082944,#061b30);color:#fff;text-align:left;cursor:pointer}
  .verb-list-toggle span{color:#8fb9df;font-size:.62rem;text-transform:uppercase;letter-spacing:.06em}
  .verb-list-toggle b{font-size:.78rem;text-align:right}
  .verb-list-toggle i{color:#25d7ff;font-style:normal;transition:transform .18s}
  .verb-list-toggle[aria-expanded="true"] i{transform:rotate(180deg)}
  .verb-list{display:none;position:absolute;z-index:40;top:47px;left:0;right:0;max-height:240px;overflow-y:auto;padding:5px;border:1px solid #2182bd;border-radius:9px;background:#031525;box-shadow:0 14px 30px #000b}
  .verb-list.open{display:block}
  .verb-list button{display:block;width:100%;padding:8px 10px;border:0;border-bottom:1px solid #123f60;border-radius:0;background:transparent;text-align:left}
  .verb-list button:last-child{border-bottom:0}
  .verb-list button.active{background:linear-gradient(90deg,#087cff,#06499d);color:#fff}
  .verb-list button b{font-size:.72rem}
  .verb-list button small{display:inline;margin-left:7px;font-size:.58rem}
}

/* Prioridad final del rediseño modular sobre estilos heredados. */
.sidebar .verb-library{margin-top:0;padding:0;border:1px solid #123f60}
.sidebar .verb-list-toggle{display:grid;height:auto;border:0;border-radius:0;background:transparent}
.sidebar .verb-list{display:block;position:static;max-height:260px;padding:0 7px 7px;border:0;background:transparent;box-shadow:none}
.sidebar .verb-list[hidden]{display:none}
.sidebar .verb-list button{min-height:43px;padding:7px 9px 7px 15px}
.sidebar .verb-list button:before{top:7px;bottom:7px}
.sidebar .verb-list button b{font-size:.75rem}
.sidebar .verb-list button small{display:block;margin:2px 0 0;font-size:.6rem}
@media(min-width:851px){.shell{grid-template-columns:210px minmax(0,1fr)}}
@media(max-width:850px){.sidebar .verb-list{max-height:190px}}

/* Mis verbos ocupa todo el espacio restante de la barra lateral. */
@media(min-width:851px){
  .sidebar{height:auto;min-height:calc(100vh - 78px);align-self:stretch;overflow:hidden}
  .sidebar nav{flex:0 0 auto}
  .sidebar .verb-library{display:flex;flex:1 1 auto;min-height:0;flex-direction:column}
  .sidebar .verb-library-search{flex:0 0 32px}
  .sidebar .verb-list{flex:0 1 auto;min-height:0;height:calc(100vh - 100px);max-height:calc(100vh - 100px);overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain}
  .sidebar blockquote,.sidebar .side-logo{display:none}
}

/* La experiencia aprobada manda sobre los ajustes móviles heredados. */
@media(max-width:560px){
  .topbar{position:relative;height:76px;padding:0 16px}.brand strong{display:block!important;font-size:1rem}.brand small{display:block!important;font-size:.48rem}.search{display:none}.sidebar{display:none!important}main{padding:12px 10px 28px}
  .mobile-accordion{display:grid}.verb-hero,.mode-cards,footer{display:none!important}.mobile-collapsed{display:none!important}
  #filtersPanel{display:block;overflow:visible;margin:0 0 9px;padding:14px}.filter-row{min-width:0;align-items:flex-start;flex-direction:column}.filter-row>span{width:auto}.filter-chip{min-height:40px;padding:8px 14px}
  .workspace{display:block;margin:0}.related{display:none!important}.sentence-panel{padding:14px 10px 12px}
  .sentence-stage{min-height:350px;display:grid;grid-template-columns:1fr 1.18fr 1fr;grid-template-areas:"phrase phrase phrase" "prev listen next";gap:18px 14px;padding:18px 6px 24px}.sentence-stage>div{grid-area:phrase}.sentence-stage #prevBtn{grid-area:prev}.sentence-stage #nextBtn{grid-area:next}.sentence-stage .round{width:66px;height:66px}.mobile-listen{display:grid;width:88px;height:88px}.english{font-size:clamp(2.15rem,10vw,3.35rem);line-height:1.24}.spanish{font-size:1.22rem}
  .repeat-console{margin:0;border-radius:13px}.repeat-console-head{padding:14px 12px;align-items:flex-start}.repeat-console-head h2{font-size:1.05rem}.repeat-console-head p{display:block;font-size:.7rem}.repeat-controls{grid-template-columns:1fr 1fr;padding:13px 11px;gap:12px 10px}.repeat-controls input,.repeat-controls select{height:46px}.audio-actions{display:grid;grid-template-columns:1fr auto}.audio-actions #listenOnceBtn{display:none}.audio-actions .audio-primary,.audio-actions .audio-stop{min-height:54px}
  .audio-actions .audio-stop{min-width:120px;border:2px solid #ff365f;background:linear-gradient(145deg,#3c101c,#210a12);color:#ff5574;font-size:1rem;font-weight:900;letter-spacing:.02em;box-shadow:0 0 18px #ff174f66,inset 0 1px #ff8aa044}
  .audio-actions .audio-stop:hover,.audio-actions .audio-stop:focus-visible{background:linear-gradient(145deg,#641326,#350912);color:#ff8ba0;box-shadow:0 0 24px #ff174f99}
}