body{

    margin:0;
    padding:0;

    font-family: Arial;

    background:#f1f5f9;

}

.contenedor{

    width:700px;

    margin:auto;

    margin-top:40px;

    background:white;

    border-radius:15px;

    box-shadow:0px 0px 10px rgba(0,0,0,0.1);

    overflow:hidden;

}

.cabecera{

    background:#1e293b;

    color:white;

    padding:20px;

    display:flex;

    align-items:center;

    gap:15px;

}

.cabecera img{

    width:50px;

}

.chat-box{

    height:450px;

    padding:20px;

    overflow-y:auto;

    background:#e2e8f0;

}

.mensaje{

    padding:12px;

    margin:10px 0;

    border-radius:10px;

    width:fit-content;

    max-width:80%;

}

.usuario{

    background:#2563eb;

    color:white;

    margin-left:auto;

}

.bot{

    background:white;

    border:1px solid #cbd5e1;

}

.input-area{

    display:flex;

    padding:15px;

    background:white;

}

input{

    flex:1;

    padding:15px;

    border:1px solid #cbd5e1;

    border-radius:10px;

    outline:none;

    font-size:16px;

}

button{

    margin-left:10px;

    padding:15px 25px;

    border:none;

    border-radius:10px;

    background:#2563eb;

    color:white;

    cursor:pointer;

    font-size:16px;

}

button:hover{

    background:#1d4ed8;

}