*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    -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;
    --giallo:#c98a12;
    --giallo-chiaro:#fff3de;
    --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);

    --grad2:linear-gradient(135deg,#17b995,#22d3c5);

    --carta-grad:linear-gradient(180deg,#ffffff,#fbfcff);
    --nav-bg:rgba(255,255,255,.86);
    --viola-chiaro:#f2edfe;
}

/*---------------- 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);
    --viola-chiaro:#241b3d;
}

body{
    font-family:"Segoe UI",Arial,Helvetica,sans-serif;
    background:var(--sfondo);
    color:var(--testo);
    padding:22px 18px 32px;
    overflow-x:hidden;
    min-height:100vh;
    position:relative;
}

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

.topbar{
    position:relative;
    display:flex;
    align-items:center;
    justify-content:center;
    margin-bottom:26px;
    min-height:40px;
}

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

.topbar h1{
    font-size:24px;
    font-weight:800;
    text-align:center;
    background:linear-gradient(90deg,var(--testo),var(--menta),var(--blu),var(--testo));
    background-size:200% auto;
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
    animation:scorrimentoSfumaturaTitolo 6s linear infinite;
}

.btnBack{
    position:absolute;
    left:0;
    top:50%;
    transform:translateY(-50%);
    width:42px;
    height:42px;
    display:flex;
    align-items:center;
    justify-content:center;
    color:var(--testo);
    text-decoration:none;
    background:var(--carta);
    border:1px solid var(--bordo);
    border-radius:50%;
    box-shadow:var(--ombra);
    cursor:pointer;
    isolation:isolate;
    transition:color .2s, border-color .2s;
}

.btnBack::before{
    content:"";
    position:absolute;
    inset:-3px;
    border-radius:50%;
    padding:2px;
    background:conic-gradient(from 220deg, var(--blu), var(--viola), var(--menta), var(--blu));
    -webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite:xor;
    mask-composite:exclude;
    opacity:0;
    transition:opacity .25s;
    z-index:-1;
}

.btnBack svg{
    width:19px;
    height:19px;
    transition:transform .22s;
}

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

.btnBack:hover::before{
    opacity:1;
    animation:ruotaAnelloBack 2.6s linear infinite;
}

.btnBack:hover svg{ transform:translateX(-3px); }

.btnBack:active svg{ transform:translateX(-1px) scale(.9); }

@keyframes ruotaAnelloBack{ to{ transform:rotate(360deg); } }

/*---------------- SCHERMATE ----------------*/

.schermata{
    display:none;
}

.schermataAttiva{
    display:flex;
}

.impostazioniSchermata,
.risultatiSchermata,
.storicoSchermata{
    flex-direction:column;
    align-items:center;
}

.conversazioneSchermata{
    flex-direction:column;
    align-items:center;
    width:100%;
    max-width:460px;
    margin:0 auto;
}

/*---------------- PANNELLO ----------------*/

.pannello{
    position:relative;
    width:100%;
    max-width:430px;
    background:var(--carta-grad);
    border-radius:28px;
    padding:28px 26px;
    box-shadow:var(--ombra-forte);
    border:1px solid var(--bordo);
    overflow:hidden;
}

.pannello::before{
    content:"";
    position:absolute;
    top:0; left:0; right:0;
    height:4px;
    background:linear-gradient(90deg,var(--menta),var(--blu),var(--viola));
}

.intestazionePannello{
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:10px;
    margin-bottom:16px;
    text-align:center;
}

.iconaCerchio{
    width:60px;
    height:60px;
    border-radius:50%;
    background:var(--grad2);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:28px;
    box-shadow:0 10px 22px rgba(23,185,149,.35);
}

.intestazionePannello h2{
    font-size:19px;
    font-weight:800;
}

.suggerimento{
    text-align:center;
    color:var(--testo-tenue);
    font-size:14px;
    line-height:1.5;
    margin-bottom:18px;
}

.avvisoErrore{
    background:#fdecec;
    color:var(--rosso);
    border-radius:14px;
    padding:12px 14px;
    font-size:13.5px;
    line-height:1.4;
    margin-bottom:16px;
    text-align:center;
}

.separatore{
    height:1px;
    background:linear-gradient(90deg,transparent,var(--bordo),transparent);
    margin-bottom:20px;
}

.sottotitolo{
    text-align:center;
    font-size:15px;
    font-weight:700;
    color:var(--testo-tenue);
    text-transform:uppercase;
    letter-spacing:.04em;
    margin-bottom:14px;
}

.selettoreGruppi{
    width:100%;
    display:flex;
    align-items:center;
    gap:10px;
    border:1.5px solid var(--bordo);
    border-radius:16px;
    background:var(--carta);
    padding:16px 18px;
    cursor:pointer;
    text-align:left;
    transition:transform .16s, box-shadow .16s, border-color .16s;
    margin-bottom:0;
}

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

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

.valoreSelettore{
    margin-left:auto;
    font-size:13px;
    font-weight:700;
    color:#fff;
    background:linear-gradient(135deg,var(--blu),var(--viola));
    padding:4px 12px;
    border-radius:99px;
}

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

/*---------------- GRIGLIA ARGOMENTI ----------------*/

.grigliaArgomenti{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:10px;
    margin-bottom:22px;
}

.cardArgomento{
    background:var(--sfondo);
    border-radius:16px;
    border:2px solid transparent;
    padding:14px 8px;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    text-align:center;
    gap:6px;
    cursor:pointer;
    transition:transform .14s, background .14s, border-color .14s;
}

.cardArgomento:hover{
    transform:translateY(-1px);
}

.emojiArgomento{
    font-size:22px;
}

.nomeArgomento{
    font-size:12.5px;
    font-weight:700;
    line-height:1.25;
}

.cardArgomento.selezionata{
    background:var(--blu-chiaro);
    border-color:var(--blu);
}

.btnInizia{
    width:100%;
    height:58px;
    border:none;
    border-radius:18px;
    background:linear-gradient(135deg,var(--blu),var(--viola));
    color:#fff;
    font-size:18px;
    font-weight:700;
    cursor:pointer;
    box-shadow:0 14px 28px rgba(59,111,224,.32);
    margin-bottom:12px;
    transition:transform .14s, box-shadow .14s, opacity .14s;
}

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

.btnInizia:disabled{
    opacity:.5;
    cursor:not-allowed;
    box-shadow:none;
}

.btnStorico{
    width:100%;
    height:50px;
    border:1.5px solid var(--bordo);
    border-radius:16px;
    background:var(--carta);
    color:var(--testo);
    font-size:15px;
    font-weight:700;
    cursor:pointer;
    transition:border-color .16s;
}

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

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

.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;
}

.foglio{
    width:100%;
    max-width:460px;
    background:var(--carta);
    border-radius:28px 28px 0 0;
    padding:14px 24px 26px;
    max-height:82vh;
    display:flex;
    flex-direction:column;
    box-shadow:0 -10px 40px rgba(30,50,90,.22);
}

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

.foglio h2{
    font-size:18px;
    font-weight:800;
    margin-bottom:16px;
}

.grigliaLivelli{
    display:grid;
    grid-template-columns:repeat(5,1fr);
    gap:8px;
    margin-bottom:20px;
}

.cardLivello{
    background:var(--sfondo);
    border-radius:12px;
    border:2px solid transparent;
    padding:12px 4px;
    text-align:center;
    font-weight:800;
    font-size:14px;
    cursor:pointer;
    transition:transform .14s, background .14s, border-color .14s;
}

.cardLivello.selezionata{
    background:var(--blu-chiaro);
    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;
    width:100%;
    box-shadow:0 10px 22px rgba(59,111,224,.3);
    margin-bottom:12px;
}

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

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

/*---------------- CONVERSAZIONE ----------------*/

.barraSuperiore{
    width:100%;
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:18px;
}

.badgeInfo{
    font-size:13.5px;
    font-weight:700;
    color:var(--testo-tenue);
    background:var(--carta);
    border:1px solid var(--bordo);
    padding:8px 14px;
    border-radius:12px;
    max-width:60%;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
}

.badgeTimer{
    font-size:15px;
    font-weight:800;
    color:var(--blu-scuro);
    background:linear-gradient(135deg,var(--blu-chiaro),var(--viola-chiaro));
    padding:8px 16px;
    border-radius:12px;
    min-width:76px;
    text-align:center;
}

.listaMessaggi{
    width:100%;
    flex:1;
    display:flex;
    flex-direction:column;
    gap:12px;
    overflow-y:auto;
    padding:4px 2px 12px;
    margin-bottom:12px;
    max-height:52vh;
}

.messaggio{
    max-width:82%;
    border-radius:18px;
    padding:12px 15px;
    font-size:14.5px;
    line-height:1.45;
}

.messaggio p{
    white-space:pre-wrap;
}

.messaggioUtente{
    align-self:flex-end;
    background:linear-gradient(135deg,var(--blu),var(--viola));
    color:#fff;
    border-bottom-right-radius:6px;
}

.messaggioIA{
    align-self:flex-start;
    background:var(--carta);
    border:1px solid var(--bordo);
    color:var(--testo);
    border-bottom-left-radius:6px;
}

.messaggioIA.inRiproduzione{
    box-shadow:0 0 0 3px rgba(59,111,224,.25);
}

.messaggioParziale{
    opacity:.65;
}

.correzioni{
    margin-top:8px;
    font-size:12.5px;
}

.correzioni summary{
    cursor:pointer;
    font-weight:700;
    color:rgba(255,255,255,.9);
}

.rigaCorrezione{
    margin-top:6px;
    padding:8px 10px;
    background:rgba(255,255,255,.16);
    border-radius:10px;
    line-height:1.4;
}

.testoOriginale{
    text-decoration:line-through;
    opacity:.85;
}

.testoCorretto{
    font-weight:800;
}

.spiegazioneCorrezione{
    display:block;
    margin-top:2px;
    opacity:.9;
}

.barraControlli{
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:8px;
    margin-bottom:14px;
}

.btnMic{
    width:84px;
    height:84px;
    border-radius:50%;
    border:none;
    background:linear-gradient(135deg,var(--blu),var(--viola));
    color:#fff;
    font-size:32px;
    cursor:pointer;
    box-shadow:0 14px 28px rgba(59,111,224,.35);
    transition:transform .14s, box-shadow .14s, background .2s;
}

.btnMic:active{
    transform:scale(.94);
}

.btnMic.inAscolto{
    background:linear-gradient(135deg,var(--rosso),#ff8a80);
    animation:pulsaMic 1.2s ease-in-out infinite;
}

.btnMic.disabilitato{
    opacity:.5;
    cursor:not-allowed;
    box-shadow:none;
}

@keyframes pulsaMic{
    0%,100%{ box-shadow:0 0 0 0 rgba(224,82,79,.45); }
    50%{ box-shadow:0 0 0 16px rgba(224,82,79,0); }
}

.statoMic{
    font-size:13.5px;
    color:var(--testo-tenue);
    font-weight:600;
    text-align:center;
}

.btnTermina{
    width:100%;
    height:50px;
    border:1.5px solid var(--bordo);
    border-radius:16px;
    background:var(--carta);
    color:var(--rosso);
    font-size:15px;
    font-weight:700;
    cursor:pointer;
    transition:border-color .16s;
}

.btnTermina:hover{
    border-color:var(--rosso);
}

/*---------------- RISULTATI ----------------*/

.riquadroCentrato,
.riquadroRisultato{
    width:100%;
    max-width:460px;
    background:var(--carta);
    border-radius:24px;
    padding:32px 26px;
    box-shadow:var(--ombra-forte);
    border:1px solid var(--bordo);
    text-align:center;
}

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

.riquadroCentrato h2{
    font-size:19px;
    font-weight:800;
    margin-bottom:10px;
}

.riquadroCentrato p{
    color:var(--testo-tenue);
    font-size:14.5px;
    line-height:1.5;
    margin-bottom:22px;
}

.spinner{
    width:44px;
    height:44px;
    border-radius:50%;
    border:4px solid var(--blu-chiaro);
    border-top-color:var(--blu);
    margin:0 auto 18px;
    animation:girataSpinner .8s linear infinite;
}

@keyframes girataSpinner{
    to{ transform:rotate(360deg); }
}

.riquadroRisultato .trofeo{
    font-size:48px;
    margin-bottom:8px;
}

.riquadroRisultato h2{
    font-size:20px;
    font-weight:800;
    margin-bottom:14px;
}

.mediaGrande{
    font-size:48px;
    font-weight:900;
    background:linear-gradient(135deg,var(--blu),var(--viola));
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
    line-height:1;
}

.confrontoMedia{
    font-size:13.5px;
    color:var(--testo-tenue);
    font-weight:600;
    margin-bottom:22px;
}

.barrePunteggi{
    display:flex;
    flex-direction:column;
    gap:12px;
    margin-bottom:22px;
    text-align:left;
}

.rigaPunteggio{
    display:grid;
    grid-template-columns:150px 1fr 34px;
    align-items:center;
    gap:10px;
}

.etichettaPunteggio{
    font-size:12.5px;
    font-weight:700;
    color:var(--testo-tenue);
}

.barraPunteggio{
    height:10px;
    border-radius:99px;
    background:var(--sfondo);
    overflow:hidden;
}

.riempimentoPunteggio{
    height:100%;
    border-radius:99px;
    background:linear-gradient(90deg,var(--menta),var(--blu));
}

.valorePunteggio{
    font-size:13px;
    font-weight:800;
    text-align:right;
    color:var(--testo);
}

.sezioneFeedback{
    text-align:left;
    margin-bottom:16px;
}

.sezioneFeedback h3{
    font-size:14px;
    font-weight:800;
    margin-bottom:8px;
}

.listaFeedback{
    list-style:none;
    display:flex;
    flex-direction:column;
    gap:6px;
}

.listaFeedback li{
    font-size:13.5px;
    color:var(--testo-tenue);
    line-height:1.4;
    padding-left:16px;
    position:relative;
}

.listaFeedback li::before{
    content:"•";
    position:absolute;
    left:0;
    color:var(--blu);
}

.listaChip{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
}

.chip{
    background:var(--giallo-chiaro);
    color:var(--giallo);
    font-size:12.5px;
    font-weight:700;
    padding:5px 12px;
    border-radius:99px;
}

.commentoGenerale{
    text-align:left;
    font-size:14px;
    color:var(--testo);
    line-height:1.5;
    background:var(--sfondo);
    border-radius:14px;
    padding:14px 16px;
    margin-bottom:20px;
}

/*---------------- STORICO ----------------*/

.storicoSchermata{
    width:100%;
    max-width:460px;
    margin:0 auto;
}

.graficoStoricoContenitore{
    width:100%;
    background:var(--carta);
    border:1px solid var(--bordo);
    border-radius:20px;
    padding:16px;
    margin-bottom:18px;
}

.svgStorico{
    width:100%;
    height:auto;
    display:block;
}

.rigaGuidaGrafico{
    stroke:var(--bordo);
    stroke-width:1;
}

.etichettaGrafico{
    font-size:9px;
    fill:var(--testo-tenue);
}

.tracciatoMedia{
    stroke:var(--blu);
    stroke-width:3;
}

.tracciatoPronuncia{
    stroke:var(--menta);
    stroke-width:1.5;
    opacity:.75;
}

.tracciatoGrammatica{
    stroke:var(--viola);
    stroke-width:1.5;
    opacity:.75;
}

.tracciatoVocabolario{
    stroke:var(--ambra);
    stroke-width:1.5;
    opacity:.75;
}

.tracciatoFluidita{
    stroke:var(--rosso);
    stroke-width:1.5;
    opacity:.75;
}

.legendaGrafico{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    justify-content:center;
    margin-top:10px;
}

.legendaVoce{
    display:flex;
    align-items:center;
    gap:5px;
    font-size:11.5px;
    color:var(--testo-tenue);
    font-weight:600;
}

.legendaVoce i{
    width:8px;
    height:8px;
    border-radius:50%;
    display:inline-block;
}

.puntinoMedia{ background:var(--blu); }
.puntinoPronuncia{ background:var(--menta); }
.puntinoGrammatica{ background:var(--viola); }
.puntinoVocabolario{ background:var(--ambra); }
.puntinoFluidita{ background:var(--rosso); }

.listaSessioniStoriche{
    width:100%;
    display:flex;
    flex-direction:column;
    gap:10px;
}

.cardSessioneStorica{
    background:var(--carta);
    border:1px solid var(--bordo);
    border-radius:16px;
    padding:14px 16px;
}

.cardSessioneStorica summary{
    display:flex;
    align-items:center;
    gap:10px;
    cursor:pointer;
    list-style:none;
}

.cardSessioneStorica summary::-webkit-details-marker{
    display:none;
}

.dataSessione{
    font-size:12.5px;
    font-weight:700;
    color:var(--testo-tenue);
    white-space:nowrap;
}

.argomentoSessione{
    font-size:13.5px;
    font-weight:700;
    flex:1;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
}

.mediaSessione{
    font-size:16px;
    font-weight:800;
    color:var(--blu-scuro);
}

.dettaglioSessione{
    margin-top:10px;
    padding-top:10px;
    border-top:1px solid var(--bordo);
    font-size:12.5px;
    color:var(--testo-tenue);
    line-height:1.5;
}

.commentoSessione{
    margin-top:6px;
    font-style:italic;
}