#kfb-boton {
position: fixed;
right: 20px;
bottom: 20px;
width: 60px;
height: 60px;
border-radius: 50%;
border: none;
background: #990099;
color: #fff;
cursor: pointer;
z-index: 9999;
box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
display: flex;
align-items: center;
justify-content: center;
padding: 0;
}
#kfb-boton:hover { background: #7a007a; }
#kfb-ventana {
position: fixed;
right: 20px;
bottom: 92px;
width: 370px;
max-width: calc(100vw - 32px);
height: 520px;
max-height: calc(100vh - 120px);
background: #1b1b1b;
color: #f2f2f2;
border-radius: 16px;
box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
z-index: 9999;
flex-direction: column;
overflow: hidden;
font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
font-size: 16px;
line-height: 1.45;
}
#kfb-cabecera {
background: #990099;
color: #fff;
padding: 14px 16px;
font-weight: 700;
font-size: 17px;
display: flex;
justify-content: space-between;
align-items: center;
}
#kfb-cerrar {
background: transparent;
border: none;
color: #fff;
font-size: 24px;
line-height: 1;
cursor: pointer;
padding: 0 2px;
}
#kfb-mensajes {
flex: 1;
overflow-y: auto;
padding: 14px;
display: flex;
flex-direction: column;
gap: 10px;
}
.kfb-burbuja {
max-width: 88%;
padding: 10px 13px;
border-radius: 14px;
word-wrap: break-word;
overflow-wrap: break-word;
}
.kfb-bot {
background: #2d2d2d;
align-self: flex-start;
border-bottom-left-radius: 4px;
}
.kfb-usuario {
background: #990099;
color: #fff;
align-self: flex-end;
border-bottom-right-radius: 4px;
}
.kfb-burbuja a { color: #e08ae0; text-decoration: underline; }
.kfb-usuario a { color: #fff; }
.kfb-escribiendo { opacity: 0.6; font-style: italic; }
#kfb-form {
display: flex;
gap: 8px;
padding: 10px;
border-top: 1px solid #333;
background: #222;
}
#kfb-entrada {
flex: 1;
min-width: 0;
padding: 11px 12px;
border: 1px solid #ccc;
border-radius: 10px;
background: #fff;
color: #1b1b1b;
font-size: 16px;
}
#kfb-entrada::placeholder { color: #777; }
#kfb-entrada:disabled { opacity: 0.5; }
#kfb-enviar {
padding: 11px 16px;
border: none;
border-radius: 10px;
background: #990099;
color: #fff;
font-size: 16px;
font-weight: 600;
cursor: pointer;
}
#kfb-enviar:disabled { opacity: 0.5; cursor: default; }
@media (max-width: 480px) {
#kfb-ventana {
right: 12px;
bottom: 88px;
width: calc(100vw - 24px);
height: calc(100vh - 110px);
}
#kfb-boton { right: 12px; bottom: 12px; }
}