*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:'Segoe UI',sans-serif;
}

body{
    min-height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
    background:linear-gradient(135deg,#0f172a,#1e293b,#334155);
    padding:20px;
}

.auth-container{
    width:100%;
    max-width:1000px;
    min-height:600px;
    background:rgba(255,255,255,.08);
    backdrop-filter:blur(15px);
    border-radius:25px;
    overflow:hidden;
    box-shadow:0 15px 40px rgba(0,0,0,.3);
    display:flex;
}

.left-panel{
    width:45%;
    background:linear-gradient(135deg,#2563eb,#1d4ed8);
    color:white;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    padding:40px;
    text-align:center;
}

.left-panel h1{
    font-size:42px;
    font-weight:700;
    margin-bottom:20px;
}

.left-panel p{
    opacity:.9;
    line-height:1.8;
}

.right-panel{
    width:55%;
    background:white;
    padding:50px;
    position:relative;
}

.form-box{
    display:none;
}

.form-box.active{
    display:block;
}

.form-title{
    font-size:32px;
    font-weight:700;
    color:#0f172a;
    margin-bottom:30px;
}

.form-control{
    border-radius:12px;
    padding:12px;
    margin-bottom:15px;
}

.btn-auth{
    width:100%;
    padding:12px;
    border:none;
    border-radius:12px;
    background:#2563eb;
    color:white;
    font-weight:600;
}

.btn-auth:hover{
    background:#1d4ed8;
}

.switch-link{
    color:#2563eb;
    cursor:pointer;
    font-weight:600;
}

.logo{
    width:90px;
    height:90px;
    border-radius:50%;
    background:white;
    color:#2563eb;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:40px;
    margin-bottom:20px;
}

@media(max-width:768px){

    .auth-container{
        flex-direction:column;
    }

    .left-panel,
    .right-panel{
        width:100%;
    }

    .left-panel{
        min-height:250px;
    }
}