*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:"Segoe UI",Arial,Helvetica,sans-serif;
    -webkit-tap-highlight-color:transparent;
    -webkit-user-select:none;
    -ms-user-select:none;
    user-select:none;
    -webkit-touch-callout:none;
}

/* Eccezione: nei campi di testo la selezione serve davvero. */
input, textarea, [contenteditable]{
    -webkit-user-select:text;
    -ms-user-select:text;
    user-select:text;
    -webkit-touch-callout:default;
}

:focus:not(:focus-visible){
    outline:none;
}

:root{
    --blu:#3b6fe0;
    --blu-scuro:#2650b8;
    --blu-chiaro:#eaf0ff;
    --verde:#1ea672;
    --rosso:#e0524f;
    --testo:#1c2b45;
    --testo-tenue:#66738c;
    --sfondo:#f2f5fb;
    --carta:#ffffff;
    --bordo:#e2e8f5;
    --ombra:0 8px 24px rgba(30,50,90,.08);

    --viola:#8b6cf0;
    --menta:#17b995;
    --ambra:#f5a623;
    --ombra-forte:0 20px 40px rgba(30,50,90,.16);

    --grad1:linear-gradient(135deg,#3b6fe0,#8b6cf0);
    --grad2:linear-gradient(135deg,#06b6d4,#17b995);
    --grad3:linear-gradient(135deg,#f5a623,#ff8a5c);
    --grad4:linear-gradient(135deg,#8b6cf0,#ec4899);
    --grad5:linear-gradient(135deg,#f5a623,#3b6fe0);

    --carta-grad:linear-gradient(180deg,#ffffff,#fbfcff);
    --nav-bg:rgba(255,255,255,.86);
}

/*---------------- TEMA SCURO ---------------- */

:root[data-theme="dark"]{
    --blu:#5f8dfa;
    --blu-scuro:#bcd0ff;
    --blu-chiaro:#1a2440;
    --verde:#33d696;
    --rosso:#f2726f;
    --testo:#eaeefb;
    --testo-tenue:#93a0c2;
    --sfondo:#0b0f1c;
    --carta:#161d30;
    --bordo:#2a3350;
    --ombra:0 8px 24px rgba(0,0,0,.35);

    --viola:#a58cf7;
    --menta:#2fe0b3;
    --ambra:#ffbb52;
    --ombra-forte:0 20px 40px rgba(0,0,0,.5);

    --carta-grad:linear-gradient(180deg,#161d30,#111730);
    --nav-bg:rgba(10,14,26,.88);
}

/* html (non body) perche' auth-guard.js nasconde il body con display:none
   finche' non sa se l'utente e' loggato: senza questo, quell'attesa si
   vedrebbe come un lampo bianco invece del colore giusto (chiaro/scuro). */
html{
    background:var(--sfondo);
}

body{
    background:var(--sfondo);
    color:var(--testo);
    padding:22px 18px 100px;
    min-height:100vh;
    position:relative;
    overflow-x:hidden;
}

/*---------------- SFONDO DECORATIVO ---------------- */

body::before,
body::after{
    content:"";
    position:fixed;
    border-radius:50%;
    filter:blur(60px);
    z-index:-1;
    pointer-events:none;
}

body::before{
    top:-110px;
    left:-80px;
    width:270px;
    height:270px;
    background:rgba(6,182,212,.15);
    animation:vagaBlob1 23s ease-in-out infinite;
}

body::after{
    bottom:-110px;
    right:-90px;
    width:300px;
    height:300px;
    background:rgba(245,166,35,.14);
    animation:vagaBlob2 27s ease-in-out infinite;
}

@keyframes vagaBlob1{
    0%,100%{ transform:translate(0,0) scale(1); }
    50%{ transform:translate(35px,40px) scale(1.12); }
}

@keyframes vagaBlob2{
    0%,100%{ transform:translate(0,0) scale(1); }
    50%{ transform:translate(-30px,-35px) scale(1.1); }
}

/*---------------- HEADER ----------------*/

@keyframes comparsaIntestazione{
    from{ opacity:0; transform:translateY(-8px); }
    to{ opacity:1; transform:translateY(0); }
}

.topbar{
    text-align:center;
    margin-bottom:30px;
    animation:comparsaIntestazione .5s ease both;
}

@keyframes scorrimentoSfumaturaTitolo{
    to{ background-position:200% center; }
}

.topbar h1{
    font-size:32px;
    font-weight:800;
    margin-bottom:8px;
    display:inline-block;
    background:linear-gradient(90deg,var(--testo),var(--blu),var(--viola),var(--testo));
    background-size:200% auto;
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
    animation:scorrimentoSfumaturaTitolo 6s linear infinite;
}

.sottotitoloPagina{
    font-size:15px;
    color:var(--testo-tenue);
}

/*---------------- CONTENITORE ----------------*/

.contenitore{
    display:flex;
    flex-direction:column;
    gap:28px;
    max-width:520px;
    margin:0 auto;
}

.sottotitolo{
    font-size:13.5px;
    font-weight:800;
    color:var(--testo-tenue);
    text-transform:uppercase;
    letter-spacing:.04em;
    margin-bottom:12px;
    padding-left:2px;
    display:flex;
    align-items:center;
    gap:8px;
}

.sottotitolo::before{
    content:"";
    width:8px;
    height:8px;
    border-radius:50%;
    background:linear-gradient(135deg,var(--blu),var(--viola));
    box-shadow:0 0 0 4px rgba(139,108,240,.16);
}

/*---------------- LIVELLO ----------------*/

.selettoreGruppi{
    width:100%;
    max-width:460px;
    display:flex;
    align-items:center;
    gap:10px;
    border:1.5px solid var(--bordo);
    border-radius:18px;
    background:var(--carta-grad);
    padding:16px 18px;
    cursor:pointer;
    text-align:left;
    box-shadow:var(--ombra);
    transition:transform .16s, box-shadow .16s, border-color .16s;
}

.selettoreGruppi:hover{
    transform:translateY(-2px);
    box-shadow:var(--ombra-forte);
    border-color:var(--blu-chiaro);
}

.selettoreGruppi:active{
    transform:scale(.98);
}

.etichettaSelettore{
    font-size:15px;
    font-weight:600;
    color:var(--testo);
}

.valoreSelettore{
    margin-left:auto;
    font-size:15px;
    font-weight:800;
    color:#fff;
    background:linear-gradient(135deg,var(--blu),var(--viola));
    padding:5px 14px;
    border-radius:99px;
    box-shadow:0 6px 14px rgba(59,111,224,.3);
}

.frecciaSelettore{
    font-size:20px;
    color:var(--testo-tenue);
    transition:transform .16s;
}

.selettoreGruppi:hover .frecciaSelettore{
    transform:translateX(3px);
}

/*---------------- ATTIVITÀ ----------------*/

.listaAttivita{
    display:flex;
    flex-direction:column;
    gap:14px;
}

/*---------------- TRADUZIONE (isolata) ----------------*/

.bloccoTraduzione{
    padding-bottom:4px;
}

/*---------------- LE 4 PROVE FONDAMENTALI (gruppo) ----------------*/

.bloccoFondamentali{
    position:relative;
    background:var(--carta-grad);
    border:1.5px solid var(--bordo);
    border-radius:28px;
    padding:22px 16px 18px;
    box-shadow:var(--ombra-forte);
    overflow:hidden;
}

.bloccoFondamentali::before{
    content:"";
    position:absolute;
    top:0; left:0; right:0;
    height:5px;
    background:linear-gradient(90deg,var(--blu),var(--menta),var(--viola),var(--ambra));
}

.intestazioneFondamentali{
    padding:0 4px;
    margin-bottom:18px;
}

.sottotitoloFondamentali{
    margin-bottom:6px;
}

.descrizioneFondamentali{
    font-size:13px;
    color:var(--testo-tenue);
    line-height:1.5;
    padding-left:16px;
}

.bloccoFondamentali .listaAttivita{
    gap:12px;
}

@keyframes ingressoAttivita{
    from{ opacity:0; transform:translateY(14px); }
    to{ opacity:1; transform:translateY(0); }
}

.cardAttivita{
    position:relative;
    display:flex;
    align-items:center;
    gap:16px;
    padding:20px;
    background:var(--carta-grad);
    border-radius:24px;
    border:1px solid var(--bordo);
    text-decoration:none;
    color:var(--testo);
    box-shadow:var(--ombra);
    overflow:hidden;
    animation:ingressoAttivita .4s ease both;
    transition:transform .18s, box-shadow .18s, border-color .18s;
}

.listaAttivita .cardAttivita:nth-child(1){ animation-delay:.03s; }
.listaAttivita .cardAttivita:nth-child(2){ animation-delay:.1s; }
.listaAttivita .cardAttivita:nth-child(3){ animation-delay:.17s; }
.listaAttivita .cardAttivita:nth-child(4){ animation-delay:.24s; }
.listaAttivita .cardAttivita:nth-child(5){ animation-delay:.31s; }

.cardAttivita::before{
    content:"";
    position:absolute;
    left:0; top:0; bottom:0;
    width:4px;
    opacity:0;
    transition:opacity .18s;
}

#cardReading::before{ background:var(--grad1); }
#cardTraduzione::before{ background:var(--grad2); }
#cardAscolto::before{ background:var(--grad3); }
#cardSpeaking::before{ background:var(--grad4); }
#cardWriting::before{ background:var(--grad5); }

.cardAttivita:hover{
    transform:translateY(-4px) translateX(2px);
    box-shadow:var(--ombra-forte);
    border-color:var(--blu-chiaro);
}

.cardAttivita:hover::before{
    opacity:1;
}

.cardAttivita:active{
    transform:scale(.98);
}

.iconaAttivita{
    width:60px;
    height:60px;
    flex-shrink:0;
    display:flex;
    justify-content:center;
    align-items:center;
    font-size:28px;
    border-radius:18px;
    transition:transform .18s;
}

#cardReading .iconaAttivita{ background:var(--grad1); box-shadow:0 10px 20px rgba(59,111,224,.32); }
#cardTraduzione .iconaAttivita{ background:var(--grad2); box-shadow:0 10px 20px rgba(6,182,212,.32); }
#cardAscolto .iconaAttivita{ background:var(--grad3); box-shadow:0 10px 20px rgba(245,166,35,.32); }
#cardSpeaking .iconaAttivita{ background:var(--grad4); box-shadow:0 10px 20px rgba(139,108,240,.32); }
#cardWriting .iconaAttivita{ background:var(--grad5); box-shadow:0 10px 20px rgba(245,166,35,.32); }

.cardAttivita:hover .iconaAttivita{
    transform:scale(1.08) rotate(-4deg);
}

.testoAttivita{
    flex:1;
    min-width:0;
}

.testoAttivita h2{
    font-size:19px;
    font-weight:800;
    margin-bottom:6px;
    color:var(--testo);
}

.testoAttivita p{
    font-size:13.5px;
    line-height:1.4;
    color:var(--testo-tenue);
}

.frecciaAttivita{
    font-size:24px;
    color:var(--testo-tenue);
    flex-shrink:0;
    transition:transform .18s, color .18s;
}

.cardAttivita:hover .frecciaAttivita{
    transform:translateX(4px);
    color:var(--blu);
}

/*---------------- OVERLAY / POPUP LIVELLO ----------------*/

.overlay{
    position:fixed;
    inset:0;
    display:flex;
    align-items:flex-end;
    justify-content:center;
    background:rgba(20,30,55,.45);
    backdrop-filter:blur(3px);
    z-index:999;
    opacity:0;
    pointer-events:none;
    transition:opacity .2s;
}

.overlayVisibile{
    opacity:1;
    pointer-events:auto;
}

@keyframes scorriSuFoglio{
    from{ transform:translateY(30px); opacity:.6; }
    to{ transform:translateY(0); opacity:1; }
}

.foglio{
    width:100%;
    max-width:460px;
    background:var(--carta);
    border-radius:28px 28px 0 0;
    padding:14px 24px 26px;
    box-shadow:0 -10px 40px rgba(30,50,90,.22);
    animation:scorriSuFoglio .3s cubic-bezier(.2,.8,.3,1);
}

.manigliaFoglio{
    width:48px;
    height:5px;
    border-radius:3px;
    background:linear-gradient(90deg,var(--blu),var(--viola));
    margin:0 auto 16px;
}

.foglio h2{
    font-size:19px;
    font-weight:800;
    margin-bottom:18px;
    color:var(--testo);
}

.foglioCentrato{
    align-items:center;
    text-align:center;
    padding-top:22px;
}

.iconaAvviso{
    font-size:44px;
    margin-bottom:10px;
    display:inline-block;
}

.foglioCentrato p{
    font-size:15px;
    color:var(--testo-tenue);
    margin-bottom:22px;
    line-height:1.5;
}

.foglioCentrato .btnPrimario,
.foglioCentrato .btnSecondario{
    flex:none;
    width:100%;
}

.grigliaLivelli{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:10px;
    margin-bottom:20px;
}

.cardLivello{
    background:var(--sfondo);
    border:2px solid transparent;
    border-radius:16px;
    padding:16px 8px;
    text-align:center;
    font-size:18px;
    font-weight:800;
    color:var(--testo);
    cursor:pointer;
    transition:transform .14s, background .14s, border-color .14s;
}

.cardLivello:hover{
    transform:translateY(-2px);
}

.cardLivello.selezionata{
    background:linear-gradient(135deg,var(--blu-chiaro),#f2edfe);
    border-color:var(--blu);
    color:var(--blu-scuro);
}

.azioniFoglio{
    display:flex;
    gap:12px;
}

.btnSecondario,
.btnPrimario{
    flex:1;
    height:52px;
    border:none;
    border-radius:16px;
    font-size:16px;
    font-weight:700;
    cursor:pointer;
    transition:transform .14s, box-shadow .14s, border-color .14s;
}

.btnSecondario{
    background:var(--carta);
    color:var(--testo);
    border:1.5px solid var(--bordo);
}

.btnSecondario:hover{
    border-color:var(--blu);
}

.btnPrimario{
    background:linear-gradient(135deg,var(--blu),var(--viola));
    color:#fff;
    box-shadow:0 14px 28px rgba(59,111,224,.32);
}

.btnPrimario:hover{
    box-shadow:0 16px 32px rgba(59,111,224,.4);
}

.btnSecondario:active,
.btnPrimario:active{
    transform:scale(.98);
}

/*---------------- NAV INFERIORE ----------------*/

.barraInferiore{
    position:fixed;
    bottom:0;
    left:0;
    width:100%;
    height:74px;
    background:var(--nav-bg);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    display:flex;
    justify-content:space-around;
    align-items:center;
    box-shadow:0 -10px 30px rgba(30,50,90,.10);
    border-top:1px solid var(--bordo);
    view-transition-name:barra-inferiore;
}

.barraInferiore a{
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:2px;
    text-decoration:none;
    color:var(--testo-tenue);
    font-size:12px;
    font-weight:600;
    cursor:pointer;
}

.iconaNav{
    width:34px;
    height:34px;
    border-radius:50%;
    font-size:19px;
    display:flex;
    align-items:center;
    justify-content:center;
    transition:background .18s, transform .18s;
}

.barraInferiore a.attiva{
    color:var(--blu);
}

.barraInferiore a.attiva .iconaNav{
    background:linear-gradient(135deg,var(--blu-chiaro),#f2edfe);
    box-shadow:0 4px 10px rgba(59,111,224,.22);
    transform:translateY(-2px);
}

/* Tema scuro: la card del livello attuale (nel popup "cambia livello")
   deve sfumare verso un viola scuro, non verso il quasi-bianco #f2edfe
   della regola in tema chiaro — che sul fondo scuro stona. Stesso
   trattamento già presente in Giochi.css. */
[data-theme="dark"] .barraInferiore a.attiva .iconaNav,
[data-theme="dark"] .cardLivello.selezionata{
    background:linear-gradient(135deg,var(--blu-chiaro),#241b3d);
}