:root{
    --cuaderno-line:rgba(112,211,255,.34);
    --cuaderno-panel:rgba(9,21,48,.55);
    --cuaderno-soft:rgba(255,255,255,.08);
    --cuaderno-glow:rgba(82,224,213,.25);
}

.pagina-cuaderno-lsm{
    min-height:100vh;
    padding:96px 28px 38px;
    color:var(--texto);
    font-family:'Poppins',system-ui,sans-serif;
}

.pagina-cuaderno-lsm .bg{
    position:fixed;
    inset:0;
    z-index:-1;
    background:
        radial-gradient(circle at 12% 13%,rgba(82,224,213,.34),transparent 27%),
        radial-gradient(circle at 88% 16%,rgba(255,188,88,.28),transparent 26%),
        radial-gradient(circle at 70% 88%,rgba(181,140,255,.31),transparent 28%),
        radial-gradient(circle at 15% 86%,rgba(255,138,160,.20),transparent 25%),
        var(--fondo);
    filter:blur(20px);
}

.pagina-cuaderno-lsm .topbar{
    position:fixed;
    z-index:20;
    inset:0 0 auto;
    height:70px;
    padding:0 32px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    background:rgba(4,13,32,.52);
    backdrop-filter:blur(16px) saturate(130%);
    border-bottom:1px solid var(--cuaderno-line);
}

.pagina-cuaderno-lsm .logo{
    font-size:1.35rem;
    font-weight:800;
}

.volver-menu,.btn-principal,.btn-secundario,.ficha-indice,.lamina-mini{
    min-height:44px;
    border-radius:15px;
    border:1px solid var(--cuaderno-line);
    color:var(--texto);
    font:inherit;
    font-weight:700;
    cursor:pointer;
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease;
}

.volver-menu{
    display:inline-flex;
    align-items:center;
    padding:0 15px;
    text-decoration:none;
    background:rgba(255,255,255,.08);
}

.volver-menu:hover,.btn-principal:hover,.btn-secundario:hover,.ficha-indice:hover,.lamina-mini:hover{
    transform:translateY(-2px);
    box-shadow:0 12px 28px rgba(0,0,0,.22),0 0 20px var(--cuaderno-glow);
}

.cuaderno-contenido{width:min(1400px,100%);margin:0 auto;}

.cuaderno-hero,.explorador,.biblioteca-laminas,.proximo-reto,.reto-visual,.nota-validacion{
    border:1px solid var(--cuaderno-line);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.17),0 20px 46px rgba(0,0,0,.17);
    backdrop-filter:blur(20px) saturate(130%);
}

.cuaderno-hero{
    display:flex;
    gap:24px;
    align-items:center;
    justify-content:space-between;
    padding:clamp(28px,5vw,54px);
    border-radius:30px;
    background:linear-gradient(120deg,rgba(10,41,81,.74),rgba(57,35,94,.48));
}

.eyebrow{margin:0 0 8px;color:var(--boton);font-size:.74rem;font-weight:800;letter-spacing:.14em;}
.cuaderno-hero h1{margin:0;color:var(--texto);font-size:clamp(2rem,5vw,4rem);line-height:1.06;}
.cuaderno-hero p:not(.eyebrow){max-width:690px;margin:16px 0 0;color:var(--texto-suave,#d5dbea);font-size:clamp(1rem,2vw,1.18rem);line-height:1.65;}

.btn-principal{padding:12px 19px;background:linear-gradient(105deg,#55ddd8,#aa7ffa);color:#061326;border-color:transparent;box-shadow:0 7px 22px rgba(82,224,213,.27);}
.btn-secundario{padding:12px 19px;background:rgba(255,255,255,.08);}

.nota-validacion{display:flex;gap:14px;align-items:flex-start;margin:20px 0;padding:17px 20px;border-radius:19px;background:rgba(255,255,255,.075);}
.nota-validacion span{color:#facc61;font-size:1.45rem;line-height:1;}.nota-validacion p{margin:0;line-height:1.55;}

.explorador{display:grid;grid-template-columns:minmax(250px,.75fr) minmax(0,1.5fr);overflow:hidden;border-radius:30px;background:rgba(6,17,44,.54);}
.indice-cuaderno{padding:24px;border-right:1px solid var(--cuaderno-line);background:rgba(7,27,59,.36);}
.indice-heading h2,.ficha-heading h2,.biblioteca-heading h2,.proximo-reto h2{margin:0;font-size:clamp(1.4rem,3vw,2rem);}
.fichas-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:18px;}
.ficha-indice{min-height:68px;padding:10px;text-align:left;background:rgba(255,255,255,.055);}.ficha-indice b{display:block;font-size:.9rem;}.ficha-indice small{display:block;margin-top:3px;color:var(--texto-suave,#b9c1d0);font-size:.68rem;}.ficha-indice[aria-current="true"]{border-color:#55ddd8;background:linear-gradient(135deg,rgba(82,224,213,.28),rgba(181,140,255,.24));box-shadow:0 0 22px rgba(82,224,213,.18);}

.ficha-principal{padding:clamp(22px,4vw,42px);}.ficha-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;}.numero-ficha{padding:7px 11px;border:1px solid var(--cuaderno-line);border-radius:999px;background:rgba(255,255,255,.08);white-space:nowrap;font-size:.84rem;}.descripcion-sena{max-width:850px;margin:14px 0 20px;line-height:1.65;color:var(--texto-suave,#d5dbea);}.ficha-acciones{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.pasos-movimiento{margin:0 0 18px;padding:18px 20px;border:1px solid rgba(135,210,255,.3);border-radius:19px;background:linear-gradient(135deg,rgba(82,224,213,.11),rgba(181,140,255,.11));}.pasos-movimiento h3{margin:0;font-size:1.16rem;}.pasos-movimiento ol{display:grid;gap:9px;margin:14px 0 0;padding-left:1.45rem;line-height:1.58;}.pasos-movimiento li{padding-left:4px;}.pasos-movimiento li::marker{color:var(--boton);font-weight:800;}.estado-audio{min-height:1.25rem;margin:-10px 0 18px;color:var(--texto-suave,#d5dbea);font-size:.86rem;}
.lamina-destacada{margin:0;overflow:hidden;border:1px solid var(--cuaderno-line);border-radius:22px;background:rgba(255,255,255,.06);}.lamina-destacada img{display:block;width:100%;max-height:780px;object-fit:contain;background:#fff;}.lamina-destacada figcaption{padding:13px 16px;font-size:.88rem;line-height:1.45;color:var(--texto-suave,#d5dbea);}

.biblioteca-laminas{margin-top:24px;padding:clamp(23px,4vw,40px);border-radius:30px;background:rgba(11,26,61,.49);}.biblioteca-heading{display:flex;justify-content:space-between;gap:28px;align-items:end;}.biblioteca-heading>p{max-width:355px;margin:0;line-height:1.5;color:var(--texto-suave,#d5dbea);}.laminas-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;margin-top:23px;}.lamina-mini{padding:0;overflow:hidden;text-align:left;background:rgba(255,255,255,.06);}.lamina-mini img{display:block;width:100%;aspect-ratio:3 / 4;object-fit:cover;background:white;}.lamina-mini span{display:block;padding:11px 12px;font-size:.85rem;}.lamina-mini[aria-pressed="true"]{border-color:#55ddd8;box-shadow:0 0 0 2px rgba(82,224,213,.24),0 0 20px var(--cuaderno-glow);}

.proximo-reto{display:flex;gap:22px;align-items:flex-start;margin-top:24px;padding:clamp(23px,4vw,40px);border-radius:30px;background:linear-gradient(130deg,rgba(127,88,214,.38),rgba(27,132,177,.32));}.proximo-reto>span{display:grid;place-items:center;width:54px;height:54px;flex:0 0 54px;border-radius:17px;background:rgba(255,255,255,.14);font-size:1.9rem;}.proximo-reto p:not(.eyebrow){max-width:850px;margin:9px 0 0;line-height:1.58;color:var(--texto-suave,#e5e8f4);}

.teclado-lsm{margin-top:24px;padding:clamp(23px,4vw,40px);border:1px solid var(--cuaderno-line);border-radius:30px;background:linear-gradient(130deg,rgba(28,111,161,.38),rgba(50,52,122,.42));box-shadow:inset 0 1px 0 rgba(255,255,255,.17),0 20px 46px rgba(0,0,0,.17);backdrop-filter:blur(20px) saturate(130%);}.teclado-encabezado{display:flex;align-items:center;justify-content:space-between;gap:20px;}.teclado-encabezado h2{margin:0;font-size:clamp(1.55rem,3vw,2.15rem);}.teclado-encabezado p:not(.eyebrow){max-width:760px;margin:9px 0 0;line-height:1.58;color:var(--texto-suave,#e5e8f4);}.teclado-contador{min-width:96px;padding:11px 14px;border:1px solid rgba(170,223,255,.45);border-radius:999px;background:rgba(4,15,42,.26);font-weight:800;text-align:center;}.teclado-tablero{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(235px,.55fr);gap:24px;align-items:start;margin-top:24px;}.lamina-alfabeto{position:relative;overflow:hidden;border:1px solid rgba(191,228,255,.5);border-radius:22px;background:#f8fbff;box-shadow:0 16px 34px rgba(0,0,0,.18);}.lamina-alfabeto>img{display:block;width:100%;height:auto;}.teclas-lsm{position:absolute;inset:0;}.tecla-lsm{position:absolute;box-sizing:border-box;border:2px solid transparent!important;border-radius:10px;background:transparent!important;color:transparent!important;box-shadow:none!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important;cursor:pointer;transition:background .18s ease,border-color .18s ease,box-shadow .18s ease;}.tecla-lsm:hover,.tecla-lsm:focus-visible,.tecla-lsm.seleccionada{border-color:#035bbd!important;background:rgba(255,255,255,.16)!important;box-shadow:inset 0 0 0 2px rgba(255,255,255,.8),0 0 0 3px rgba(247,220,114,.85)!important;outline:0;}.detalle-tecla{padding:20px;border:1px solid rgba(191,228,255,.34);border-radius:22px;background:rgba(3,16,45,.3);}.detalle-tecla h3{margin:0 0 12px;font-size:clamp(2rem,6vw,3.4rem);line-height:1;}.detalle-tecla canvas{display:block;width:100%;aspect-ratio:1.78 / 1;border:1px solid rgba(191,228,255,.45);border-radius:16px;background:#fff;}.detalle-tecla p:not(.eyebrow){min-height:3rem;margin:14px 0;color:var(--texto-suave,#e5e8f4);line-height:1.52;}.desafio-teclado{display:grid;grid-template-columns:minmax(165px,.6fr) minmax(120px,.35fr) minmax(160px,.7fr);gap:16px;align-items:center;margin-top:24px;padding:19px;border:1px solid rgba(191,228,255,.31);border-radius:21px;background:rgba(4,15,42,.25);}.desafio-teclado h3{margin:0;font-size:1.22rem;}.desafio-teclado p:not(.eyebrow){margin:7px 0 0;line-height:1.47;color:var(--texto-suave,#e5e8f4);font-size:.88rem;}.palabra-objetivo{padding:12px;border:1px solid rgba(191,228,255,.31);border-radius:15px;background:rgba(255,255,255,.08);text-align:center;}.palabra-objetivo span{display:block;color:var(--texto-suave,#e5e8f4);font-size:.75rem;font-weight:700;}.palabra-objetivo strong{display:block;margin-top:4px;color:#61e7e3;font-size:1.25rem;letter-spacing:.16em;}.palabra-construida{display:flex;align-items:center;justify-content:center;min-height:64px;padding:0 12px;border:1px dashed rgba(191,228,255,.55);border-radius:15px;background:rgba(255,255,255,.05);color:var(--texto-suave,#e5e8f4);font-weight:800;letter-spacing:.15em;text-align:center;}.palabra-construida.con-respuesta{border-style:solid;color:var(--texto);}.acciones-teclado{grid-column:2 / -1;display:flex;flex-wrap:wrap;gap:9px;justify-content:flex-end;}.retroalimentacion-teclado{grid-column:1 / -1;min-height:1.45rem;margin:0!important;font-weight:800;}.retroalimentacion-teclado.exito{color:#8bf7c7!important;}.retroalimentacion-teclado.error{color:#ffc1cd!important;}

.reto-visual{margin-top:24px;padding:clamp(23px,4vw,40px);border-radius:30px;background:linear-gradient(130deg,rgba(112,71,181,.42),rgba(20,122,161,.32));}.reto-encabezado{display:flex;align-items:center;justify-content:space-between;gap:22px;}.reto-encabezado h2{margin:0;font-size:clamp(1.55rem,3vw,2.15rem);}.reto-encabezado p:not(.eyebrow){max-width:740px;margin:9px 0 0;line-height:1.58;color:var(--texto-suave,#e5e8f4);}.progreso-reto{width:min(245px,100%);padding:13px 15px;border:1px solid var(--cuaderno-line);border-radius:17px;background:rgba(4,15,40,.27);}.progreso-reto>span{display:block;font-weight:800;text-align:right;}.barra-progreso{height:9px;margin-top:9px;overflow:hidden;border-radius:999px;background:rgba(255,255,255,.14);}.barra-progreso span{display:block;width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,#55ddd8,#aa7ffa);box-shadow:0 0 14px rgba(82,224,213,.55);transition:width .28s ease;}
.tablero-reto{display:grid;grid-template-columns:minmax(220px,.75fr) minmax(0,1.1fr);gap:24px;align-items:center;margin-top:28px;}.imagen-reto{margin:0;overflow:hidden;border:1px solid rgba(255,255,255,.33);border-radius:24px;background:rgba(255,255,255,.9);box-shadow:0 16px 34px rgba(0,0,0,.18);}.imagen-reto img{display:block;width:100%;max-height:370px;object-fit:contain;background:#fff;}.imagen-reto figcaption{padding:11px 14px;background:rgba(7,19,47,.9);color:var(--texto-suave,#e5e8f4);font-size:.83rem;line-height:1.45;}.pregunta-reto h3{margin:0;font-size:clamp(1.35rem,3vw,2rem);}.opciones-reto{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;margin-top:18px;}.opcion-reto{min-height:58px;padding:12px 14px;border:1px solid rgba(183,218,255,.42);border-radius:16px;background:rgba(255,255,255,.1);color:var(--texto);font:inherit;font-weight:800;cursor:pointer;transition:transform .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease;}.opcion-reto:hover:not(:disabled){transform:translateY(-2px);background:rgba(255,255,255,.17);box-shadow:0 10px 21px rgba(0,0,0,.16);}.opcion-reto:focus-visible,.ficha-indice:focus-visible,.lamina-mini:focus-visible,.btn-principal:focus-visible,.btn-secundario:focus-visible{outline:3px solid #f7dc72;outline-offset:3px;}.opcion-reto:disabled{cursor:default;opacity:.84;}.opcion-reto.correcta{border-color:#65ecb2;background:rgba(47,188,128,.29);color:#f4fff9;}.opcion-reto.incorrecta{border-color:#ff91a4;background:rgba(220,73,105,.24);color:#fff3f5;}.retroalimentacion-reto{min-height:1.55rem;margin:16px 0 0;font-weight:700;line-height:1.5;}.retroalimentacion-reto.exito{color:#8bf7c7;}.retroalimentacion-reto.error{color:#ffc1cd;}.acciones-reto{display:flex;flex-wrap:wrap;gap:10px;margin-top:15px;}.btn-principal:disabled{cursor:not-allowed;opacity:.55;box-shadow:none;transform:none;}
.panel-recompensas{display:grid;grid-template-columns:minmax(180px,.45fr) minmax(150px,.3fr) minmax(250px,1fr);gap:20px;align-items:start;margin-top:25px;padding:20px;border:1px solid rgba(183,218,255,.32);border-radius:22px;background:rgba(4,15,42,.24);}.panel-recompensas h3{margin:0;font-size:1.25rem;}.estadisticas-reto{display:flex;flex-wrap:wrap;gap:9px;}.estadisticas-reto span{padding:10px 12px;border:1px solid rgba(183,218,255,.27);border-radius:13px;background:rgba(255,255,255,.08);white-space:nowrap;}.estadisticas-reto b{font-size:1.15rem;}.estadisticas-reto small{color:var(--texto-suave,#e5e8f4);font-weight:700;}.medallas-reto{display:flex;flex-wrap:wrap;gap:8px;}.medalla-reto{min-width:105px;flex:1;padding:10px;border:1px solid rgba(183,218,255,.24);border-radius:14px;background:rgba(255,255,255,.055);opacity:.48;filter:saturate(.35);}.medalla-reto.desbloqueada{border-color:#f6d761;background:linear-gradient(135deg,rgba(251,207,82,.28),rgba(181,140,255,.23));opacity:1;filter:none;box-shadow:0 0 18px rgba(251,207,82,.18);}.medalla-reto span{display:block;font-size:1.2rem;}.medalla-reto b{display:block;margin-top:3px;font-size:.78rem;}.medalla-reto small{display:block;margin-top:3px;color:var(--texto-suave,#e5e8f4);font-size:.67rem;line-height:1.3;}.trofeo-personalizado label{display:block;margin-bottom:8px;font-weight:800;font-size:.85rem;}.trofeo-personalizado>div{display:flex;gap:8px;}.trofeo-personalizado input{min-width:0;flex:1;height:44px;padding:0 12px;border:1px solid var(--cuaderno-line);border-radius:13px;background:rgba(255,255,255,.1);color:var(--texto);font:inherit;}.trofeo-personalizado .btn-secundario{min-height:44px;padding:9px 12px;}.trofeo-personalizado p{min-height:1.2rem;margin:8px 0 0;color:var(--texto-suave,#e5e8f4);font-size:.78rem;line-height:1.4;}

@media(max-width:900px){.explorador{grid-template-columns:1fr;}.indice-cuaderno{border-right:0;border-bottom:1px solid var(--cuaderno-line);}.fichas-grid{grid-template-columns:repeat(4,minmax(0,1fr));}.laminas-grid{grid-template-columns:repeat(2,minmax(0,1fr));}.teclado-tablero{grid-template-columns:1fr;}.lamina-alfabeto{max-width:760px;}.desafio-teclado{grid-template-columns:1fr 1fr;}.acciones-teclado{grid-column:1 / -1;justify-content:flex-start;}.tablero-reto{grid-template-columns:1fr;}.imagen-reto{max-width:430px;}.panel-recompensas{grid-template-columns:1fr 1fr;}.trofeo-personalizado{grid-column:1 / -1;}}
@media(max-width:650px){.pagina-cuaderno-lsm{padding:84px 14px 25px;}.pagina-cuaderno-lsm .topbar{height:62px;padding:0 16px;}.pagina-cuaderno-lsm .logo{font-size:1.14rem;}.volver-menu{min-height:38px;padding:0 10px;font-size:.78rem;}.cuaderno-hero{display:block;padding:26px 22px;border-radius:24px;}.cuaderno-hero .btn-principal{width:100%;margin-top:22px;}.nota-validacion{padding:15px;border-radius:17px;}.explorador,.biblioteca-laminas,.proximo-reto,.teclado-lsm,.reto-visual{border-radius:24px;}.fichas-grid{grid-template-columns:repeat(2,minmax(0,1fr));}.ficha-principal{padding:22px 16px;}.biblioteca-heading{display:block;}.biblioteca-heading>p{margin-top:10px;}.laminas-grid{grid-template-columns:1fr 1fr;gap:10px;}.proximo-reto{padding:22px;gap:14px;}.proximo-reto>span{width:44px;height:44px;flex-basis:44px;font-size:1.4rem;}.teclado-lsm{padding:22px 14px;}.teclado-encabezado{display:block;}.teclado-contador{display:inline-block;margin-top:15px;}.detalle-tecla{padding:16px;}.desafio-teclado{grid-template-columns:1fr;padding:15px;}.acciones-teclado{grid-column:auto;}.acciones-teclado .btn-principal,.acciones-teclado .btn-secundario{flex:1;min-width:130px;}.reto-visual{padding:22px 16px;}.reto-encabezado{display:block;}.progreso-reto{margin-top:17px;}.opciones-reto{grid-template-columns:1fr;}.panel-recompensas{grid-template-columns:1fr;padding:16px;}.trofeo-personalizado{grid-column:auto;}.trofeo-personalizado>div{display:block;}.trofeo-personalizado .btn-secundario{width:100%;margin-top:8px;}}
@media (prefers-reduced-motion:reduce){.volver-menu,.btn-principal,.btn-secundario,.ficha-indice,.lamina-mini{transition:none;}}