*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

.sph-container{
    max-width:1200px;
    margin:auto;
    padding:20px;
}

.sph-header{
    text-align:center;
    margin-bottom:30px;
}

.sph-header h1{
    font-size:34px;
    margin-bottom:10px;
}

.sph-header p{
    color:#666;
}

.sph-selector{
    display:flex;
    justify-content:center;
    gap:15px;
    margin-bottom:30px;
}

.sph-btn{
    border:none;
    background:#e5e7eb;
    padding:12px 25px;
    border-radius:8px;
    cursor:pointer;
    font-size:16px;
    font-weight:600;
}

.sph-btn.active{
    background:#2563eb;
    color:#fff;
}

.sph-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
}

.sph-upload-box{
    border:2px dashed #2563eb;
    border-radius:15px;
    padding:30px;
    text-align:center;
    background:#fff;
}

.sph-upload-box h3{
    margin-bottom:15px;
}

.sph-upload-box input{
    width:100%;
    max-width:350px;
}

.sph-preview{
    margin-top:20px;
}

.sph-preview img{
    width:100%;
    max-height:350px;
    object-fit:contain;
    display:none;
    border-radius:10px;
    border:1px solid #ddd;
}

#documentSection{
    display:none;
}

@media(max-width:768px){

    .sph-selector{
        flex-direction:column;
    }

    .sph-btn{
        width:100%;
    }

    .sph-grid{
        grid-template-columns:1fr;
    }

}