*{
    box-sizing:border-box;
}


body{

    margin:0;
    background:#f1f3f6;
    font-family:Arial, Helvetica, sans-serif;

}


/* Área principal do aplicativo */

.app{

    width:100%;
    min-height:100vh;
    padding:15px;

}


/* Cabeçalho */

.topo{

    background:#1976d2;
    color:white;

    padding:20px;
    border-radius:0 0 25px 25px;

    text-align:center;

    box-shadow:0 4px 10px rgba(0,0,0,.2);

}


.topo h2{

    margin:0;
    font-size:24px;

}


.topo p{

    margin:8px 0 0;
    opacity:.9;

}



/* Caixa branca */

.caixa{

    background:white;

    margin-top:20px;

    padding:15px;

    border-radius:20px;

    box-shadow:
    0 3px 12px rgba(0,0,0,.12);

}



/* Campo pesquisa */

input{

    width:100%;

    padding:15px 18px;

    border-radius:30px;

    border:1px solid #ddd;

    font-size:16px;

    outline:none;

}


input:focus{

    border-color:#1976d2;

    box-shadow:0 0 5px #1976d2;

}



/* Lista */

ul{

    padding:0;

    margin-top:15px;

}



li{

    list-style:none;

    background:#fafafa;

    padding:15px;

    margin-bottom:10px;

    border-radius:15px;

    border:1px solid #eee;

    text-align:left;

    cursor:pointer;

    transition:.2s;

}



li:hover{

    background:#eaf3ff;

}



li:active{

    transform:scale(.98);

}



/* Cartão de detalhes */

.card{

    background:white;

    border-radius:20px;

    padding:20px;

    margin-top:20px;

    box-shadow:
    0 3px 12px rgba(0,0,0,.15);

}