.calc-section{
    --win-acento:#005fb8;
    --win-acento-hover:#0a6cc4;
    --win-fondo:#f3f3f3;
    --win-panel:#fbfbfb;
    --win-lateral:#eeeeee;
    --win-borde:#d9d9d9;
    --win-control-borde:#c8c8c8;
    --win-texto:#1b1b1b;
    --win-texto-2:#5c5c5c;
    --win-seleccion:#e3edf7;
    --win-superficie:#ffffff;
    --win-linea:#ececec;
    --win-fila-par:#fafafa;
    --win-control-hover:#f9f9f9;

    max-width:1100px;
    margin:2rem auto;
    padding:0 1rem;
    font-family:'Segoe UI Variable Text','Segoe UI',system-ui,-apple-system,sans-serif;
}

.calc-card{
    position:relative;
    background:var(--win-panel);
    border:1px solid var(--win-borde);
    border-radius:8px;
    padding:0;
    overflow:hidden;
    color:var(--win-texto);
    box-shadow:0 8px 32px rgba(0,0,0,.14), 0 2px 6px rgba(0,0,0,.08);
}

.calc-title{
    display:flex;
    align-items:center;
    gap:.5rem;
    margin:0;
    padding:.55rem .9rem;
    background:var(--win-fondo);
    border-bottom:1px solid var(--win-borde);
    font-size:.92rem;
    font-weight:600;
    color:var(--win-texto);
    letter-spacing:.1px;
}
.calc-title::after{
    content:'—\2003\25A2\2003\2715' / '';
    margin-left:auto;
    font-size:.8rem;
    font-weight:400;
    color:var(--win-texto-2);
    letter-spacing:2px;
}

.calc-subtitle{
    margin:0;
    padding:.55rem .9rem;
    background:var(--win-superficie);
    border-bottom:1px solid var(--win-borde);
    font-size:.85rem;
    color:var(--win-texto-2);
}

.calc-aviso-legal{
    margin:0;
    background:#fff8e1;
    border-top:1px solid #f1d27a;
    color:#5c4400;
    font-size:.84rem;
}
.calc-aviso-legal summary{
    display:flex;
    align-items:center;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:.3rem 1rem;
    padding:.6rem .9rem;
    cursor:pointer;
    list-style:none;
}
.calc-aviso-legal summary::-webkit-details-marker{ display:none; }
.calc-aviso-ver{
    font-weight:700;
    text-decoration:underline;
    white-space:nowrap;
}
.calc-aviso-legal[open] .calc-aviso-ver{ text-decoration:none; }
.calc-aviso-legal ul{
    margin:0;
    padding:0 .9rem .8rem 2.1rem;
    display:flex;
    flex-direction:column;
    gap:.35rem;
    line-height:1.45;
}

.calc-card::after{
    content:'Listo  ·  Resultados de referencia, solo como guía: confírmalos con un profesional.';
    display:block;
    padding:.35rem .9rem;
    background:var(--win-fondo);
    border-top:1px solid var(--win-borde);
    font-size:.74rem;
    color:var(--win-texto-2);
}

.calc-gate{
    margin:1.2rem;
    padding:1.1rem 1.2rem;
    background:var(--win-superficie);
    border:1px solid var(--win-borde);
    border-left:3px solid var(--win-acento);
    border-radius:6px;
}
.calc-gate-error{
    color:#c42b1c;
    font-size:.85rem;
    font-weight:600;
    margin:0 0 .6rem 0;
    min-height:1em;
}
.calc-gate-aviso{ margin:.7rem 0 0 0; }

#calcContenido:not([hidden]){
    display:grid;
    grid-template-columns:230px minmax(0,1fr);
    min-height:460px;
}

.calc-tabs{
    display:flex;
    flex-direction:column;
    gap:2px;
    padding:.6rem .5rem;
    background:var(--win-lateral);
    border-right:1px solid var(--win-borde);
}
.calc-tab{
    position:relative;
    display:flex;
    align-items:center;
    gap:.55rem;
    width:100%;
    padding:.55rem .8rem;
    border:none;
    border-radius:5px;
    background:transparent;
    font:inherit;
    font-size:.9rem;
    font-weight:400;
    color:var(--win-texto);
    text-align:left;
    cursor:pointer;
}
.calc-tab:hover{ background:rgba(0,0,0,.05); }
.calc-tab.active{
    background:var(--win-superficie);
    font-weight:600;
    box-shadow:0 1px 2px rgba(0,0,0,.08);
}
.calc-tab.active::before{
    content:'';
    position:absolute;
    left:0;
    top:25%;
    bottom:25%;
    width:3px;
    border-radius:3px;
    background:var(--win-acento);
}
.calc-tab:focus-visible{ outline:2px solid var(--win-acento); outline-offset:-2px; }

.calc-panel{ display:none; }
.calc-panel.active{
    display:block;
    padding:1.3rem 1.5rem 1.5rem;
    background:var(--win-panel);
}

.calc-intro{
    margin:0 0 1rem 0;
    font-size:.9rem;
    line-height:1.5;
    color:var(--win-texto-2);
}

.calc-grid{
    display:grid;
    grid-template-columns:minmax(0,1fr);
    gap:0;
    margin-bottom:1rem;
    background:var(--win-superficie);
    border:1px solid var(--win-borde);
    border-radius:6px;
}
.calc-field{
    display:grid;
    grid-template-columns:minmax(0,42%) minmax(0,1fr);
    align-items:center;
    column-gap:1rem;
    padding:.6rem .9rem;
    border-bottom:1px solid var(--win-linea);
}
.calc-field:last-child{ border-bottom:none; }
.calc-field[hidden],
.calc-tab[hidden]{ display:none; }
.calc-field label{
    font-size:.88rem;
    font-weight:400;
    color:var(--win-texto);
}
.calc-field input,
.calc-field select{
    width:100%;
    height:34px;
    padding:0 .6rem;
    border:1px solid var(--win-control-borde);
    border-bottom-color:#8a8a8a;
    border-radius:4px;
    background:var(--win-superficie);
    font:inherit;
    font-size:.9rem;
    color:var(--win-texto);
    box-sizing:border-box;
}
.calc-field input:hover,
.calc-field select:hover{ background:var(--win-control-hover); }
.calc-field input:focus,
.calc-field select:focus{
    outline:none;
    border-bottom:2px solid var(--win-acento);
    padding-bottom:1px;
}
.calc-ayuda{
    grid-column:2;
    margin-top:.3rem;
    font-size:.75rem;
    color:var(--win-texto-2);
}

.calc-btn{
    display:block;
    margin:0 0 0 auto;
    min-width:150px;
    height:34px;
    padding:0 1.4rem;
    border:1px solid var(--win-acento);
    border-radius:4px;
    background:var(--win-acento);
    color:#fff;
    font:inherit;
    font-size:.88rem;
    font-weight:600;
    cursor:pointer;
}
.calc-btn:hover{ background:var(--win-acento-hover); }
.calc-btn:active{ background:#004c99; }
.calc-btn:focus-visible{ outline:2px solid var(--win-texto); outline-offset:2px; }
.calc-gate .calc-btn{ margin:0; }

.calc-result{
    display:none;
    margin-top:1.3rem;
    padding-top:1.1rem;
    border-top:1px solid var(--win-borde);
}
.calc-result.show{ display:block; }
.calc-result h3{
    margin:0 0 .15rem 0;
    font-size:1rem;
    font-weight:600;
}
.calc-volumen{
    margin:0 0 .8rem 0;
    font-size:.85rem;
    color:var(--win-texto-2);
}
.calc-table{
    width:100%;
    border-collapse:collapse;
    margin-bottom:.9rem;
    background:var(--win-superficie);
    border:1px solid var(--win-borde);
    font-size:.88rem;
}
.calc-table th,
.calc-table td{
    text-align:left;
    padding:.45rem .7rem;
    border-bottom:1px solid var(--win-linea);
}
.calc-table th{
    background:var(--win-fondo);
    border-bottom:1px solid var(--win-borde);
    font-size:.78rem;
    font-weight:600;
    color:var(--win-texto-2);
}
.calc-table th + th,
.calc-table td + td{ border-left:1px solid var(--win-linea); }
.calc-table tbody tr:nth-child(even){ background:var(--win-fila-par); }
.calc-table tbody tr:hover{ background:var(--win-seleccion); }
.calc-table td:last-child{ font-weight:600; }

.calc-tag-catalogo,
.calc-tag-adicional{
    display:inline-block;
    margin-left:.4rem;
    padding:.05rem .45rem;
    border-radius:3px;
    font-size:.7rem;
    white-space:nowrap;
}
.calc-tag-catalogo{ background:#dff6dd; color:#0f5323; }
.calc-tag-adicional{ background:#f0f0f0; color:#5c5c5c; }

.calc-note{
    margin:0 0 1rem 0;
    font-size:.78rem;
    line-height:1.45;
    color:var(--win-texto-2);
}
.calc-actions{
    display:flex;
    justify-content:flex-end;
    gap:.6rem;
    flex-wrap:wrap;
}
.calc-btn-lista{
    display:inline-flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:.1rem;
    min-height:34px;
    padding:.45rem 1.1rem;
    line-height:1.25;
    text-align:center;
    border:1.5px solid var(--win-acento);
    border-radius:4px;
    background:var(--win-seleccion);
    color:var(--win-acento);
    font:inherit;
    font-size:.92rem;
    font-weight:700;
    cursor:pointer;
    transition:background .15s, color .15s, transform .1s;
}
.calc-btn-lista-detalle{
    font-size:.76rem;
    font-weight:500;
    opacity:.85;
}
.calc-btn-lista:hover{ background:var(--win-acento); color:#fff; }
.calc-btn-lista:active{ transform:scale(.98); }
.calc-btn-lista:focus-visible{ outline:2px solid var(--win-acento); outline-offset:2px; }
.calc-btn-lista.agregado,
.calc-btn-lista.agregado:hover{
    background:#dff6dd;
    border-color:#9fd89a;
    color:#0f5323;
    cursor:default;
    transform:none;
}
.calc-actions .btn-whatsapp-quote{
    display:inline-flex;
    align-items:center;
    width:auto;
    height:34px;
    padding:0 1.2rem;
    border-radius:4px;
    font-size:.88rem;
    font-weight:600;
}

@media (max-width:760px){
    #calcContenido:not([hidden]){
        grid-template-columns:minmax(0,1fr);
        min-height:0;
    }
    .calc-tabs{
        flex-direction:row;
        overflow-x:auto;
        scrollbar-width:none;
        border-right:none;
        border-bottom:1px solid var(--win-borde);
    }
    .calc-tabs::-webkit-scrollbar{ display:none; }
    .calc-tab{
        width:auto;
        flex:0 0 auto;
        white-space:nowrap;
    }
    .calc-tab.active::before{
        left:25%;
        right:25%;
        top:auto;
        bottom:0;
        width:auto;
        height:3px;
    }
}

@media (max-width:600px){
    .calc-section{ padding:0 .6rem; }
    .calc-title::after{ content:none; }
    .calc-tabs{
        display:grid;
        grid-template-columns:1fr 1fr;
        gap:4px;
        overflow:visible;
    }
    .calc-tab{
        width:100%;
        justify-content:center;
        white-space:normal;
        text-align:center;
        padding:.55rem .4rem;
        font-size:.85rem;
    }
    .calc-tab:last-child:nth-child(odd){ grid-column:1 / -1; }
    .calc-tab.active::before{
        left:30%;
        right:30%;
    }
    .calc-panel.active{ padding:1rem; }
    .calc-gate{ margin:.8rem; }
    .calc-field{
        grid-template-columns:minmax(0,1fr);
        row-gap:.35rem;
    }
    .calc-ayuda{ grid-column:1; }
    .calc-btn,
    .calc-btn-lista,
    .calc-actions .btn-whatsapp-quote{ width:100%; margin:0; justify-content:center; }
    .calc-actions{ justify-content:stretch; }
    .calc-table th, .calc-table td{ padding:.45rem .45rem; font-size:.82rem; }
    .calc-tag-catalogo,
    .calc-tag-adicional{
        display:table;
        margin:.3rem 0 0 0;
        white-space:normal;
    }
}