*{

    margin:0;
    padding:0;
    box-sizing:border-box;

}

body{

    min-height:100vh;

    display:flex;
    justify-content:center;
    align-items:center;

    background:#e9ecef;

    font-family:'Segoe UI',sans-serif;

    padding:20px;

}

.contenedor{

    width:100%;
    max-width:700px;

    background:white;

    padding:60px;

    border-radius:25px;

    text-align:center;

    box-shadow:
    0 15px 40px rgba(0,0,0,.15);

}

.logo{

    margin-bottom:20px;

}

.logo img{

    width:220px;

    height:auto;

    transition:.3s;

}

.logo img:hover{

    transform:scale(1.05);

}

h1{

    color:#343a40;

    font-size:48px;

    font-weight:700;

    margin-bottom:20px;

}

.descripcion{

    color:#6c757d;

    font-size:18px;

    line-height:1.8;

    margin-bottom:35px;

}

.btn-ingresar{

    display:inline-block;

    text-decoration:none;

    background:#343a40;

    color:white;

    padding:15px 40px;

    border-radius:12px;

    font-size:18px;

    font-weight:600;

    transition:.3s;

}

.btn-ingresar:hover{

    background:#212529;

    color:white;

    transform:translateY(-3px);

}

@media(max-width:768px){

    .contenedor{

        padding:35px;

    }

    .logo img{

        width:150px;

    }

    h1{

        font-size:32px;

    }

    .descripcion{

        font-size:16px;

    }

}