/* Floating button */
.chat-fab {
position: fixed;
right: 20px;
bottom: 20px;
z-index: 1100;
width: 60px;
height: 60px;
border-radius: 50%;
box-shadow: 0 6px 18px rgba(0,0,0,.15);
display: flex;
align-items: center;
justify-content: center;
font-size: 1.6rem;
}


/* Chat window */
.chat-window {
height: 60vh;
max-height: 600px;
min-height: 300px;
display: flex;
flex-direction: column;
}
.messages {
overflow-y: auto;
padding: 1rem;
flex: 1 1 auto;
background: #f8f9fa;
}
.msg {
margin-bottom: .75rem;
max-width: 78%;
word-wrap: break-word;
padding: .5rem .75rem;
border-radius: .5rem;
box-shadow: 0 1px 0 rgba(0,0,0,0.04);
}
.msg.user {
margin-left: auto;
background: #0d6efd;
color: #fff;
border-bottom-right-radius: .25rem;
}
.msg.bot {
margin-right: auto;
background: #e9ecef;
color: #212529;
border-bottom-left-radius: .25rem;
}
.quick-replies { gap: .5rem; }
.quick-replies .btn { white-space: nowrap; }