body{
    margin:0;
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
    display:flex;
    justify-content:center;
    align-items:center;
    min-height:100vh;
    padding:20px;
}

.login-box{
    width:900px;
    max-width:100%;
    background:#fff;
    border-radius:20px;
    box-shadow:0 20px 40px rgba(0,0,0,0.15);
    display:flex;
    overflow:hidden;
}

/* IZQUIERDA */
.left{
    width:45%;
    background: linear-gradient(135deg, #fbb034, #ffdd00);
    color:#fff;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    text-align:center;
    padding:30px;
}

.left h2{
    margin:0;
    font-size:26px;
}

.left p{
    margin-top:10px;
    font-size:14px;
}

/* DERECHA */
.right{
    width:55%;
    padding:40px;
    display:flex;
    flex-direction:column;
    justify-content:center;
}

.right h2{
    margin-bottom:20px;
    color:#333;
}

.input-group{
    margin-bottom:15px;
}

.input-group input{
    width:100%;
    padding:12px 10px;
    border:none;
    border-bottom:2px solid #ddd;
    outline:none;
    font-size:14px;
}

.input-group input:focus{
    border-color:#fbb034;
}

button{
    width:100%;
    padding:12px;
    border:none;
    border-radius:25px;
    background:#fbb034;
    color:#fff;
    font-size:16px;
    cursor:pointer;
    transition:.3s;
}

button:hover{
    background:#ff9800;
}

.error{
    color:red;
    margin-top:10px;
    font-size:14px;
    text-align:center;
}

/* RESPONSIVE LOGIN */
@media (max-width: 800px){
    .login-box{
        flex-direction:column;
    }

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

    .left{
        padding:20px;
    }

    .right{
        padding:25px;
    }
}