/* ---- Assistente virtuale InternoUno ---- */
#iu-chat-btn{
  position:fixed;
  bottom:20px;
  right:20px;
  width:58px;
  height:58px;
  border-radius:50%;
  background:#FF6628;
  color:#fff;
  border:none;
  box-shadow:0 6px 20px rgba(0,0,0,0.25);
  cursor:pointer;
  z-index:200;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:transform .2s ease;
}
#iu-chat-btn:hover{ transform:scale(1.06); }
#iu-chat-btn svg{ width:26px; height:26px; }
#iu-chat-panel{
  position:fixed;
  bottom:90px;
  right:20px;
  width:340px;
  max-width:calc(100vw - 32px);
  height:460px;
  max-height:calc(100vh - 130px);
  background:#fff;
  border-radius:16px;
  box-shadow:0 12px 40px rgba(0,0,0,0.25);
  display:none;
  flex-direction:column;
  overflow:hidden;
  z-index:200;
  font-family:'Inter', sans-serif;
}
#iu-chat-panel.open{ display:flex; }
#iu-chat-head{
  background:#14171C;
  color:#fff;
  padding:0.9rem 1.1rem;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
#iu-chat-head .title{ font-weight:600; font-size:0.92rem; }
#iu-chat-head .sub{ font-size:0.72rem; opacity:0.7; }
#iu-chat-close{
  background:none;
  border:none;
  color:#fff;
  font-size:1.2rem;
  cursor:pointer;
  line-height:1;
  opacity:0.8;
}
#iu-chat-log{
  flex:1;
  overflow-y:auto;
  padding:1rem;
  display:flex;
  flex-direction:column;
  gap:0.6rem;
  background:#FBF8F2;
}
.iu-msg{
  max-width:85%;
  padding:0.55rem 0.8rem;
  border-radius:12px;
  font-size:0.85rem;
  line-height:1.45;
}
.iu-msg.bot{
  background:#fff;
  color:#3a352c;
  align-self:flex-start;
  box-shadow:0 2px 6px rgba(0,0,0,0.06);
}
.iu-msg.user{
  background:#FF6628;
  color:#fff;
  align-self:flex-end;
}
.iu-msg.typing{
  background:#fff;
  color:#a89d87;
  align-self:flex-start;
  font-style:italic;
}
#iu-chat-form{
  display:flex;
  gap:0.5rem;
  padding:0.7rem;
  border-top:1px solid rgba(0,0,0,0.06);
}
#iu-chat-input{
  flex:1;
  border:1px solid rgba(0,0,0,0.12);
  border-radius:100px;
  padding:0.55rem 0.9rem;
  font-size:16px;
  font-family:'Inter', sans-serif;
  outline:none;
}
#iu-chat-input:focus{ border-color:#FF6628; }
#iu-chat-send{
  background:#FF6628;
  color:#fff;
  border:none;
  border-radius:50%;
  width:38px;
  height:38px;
  flex-shrink:0;
  cursor:pointer;
  font-size:1rem;
}
#iu-chat-send:disabled{ opacity:0.5; cursor:not-allowed; }
@media (max-width: 480px){
  #iu-chat-panel{
    right:10px;
    left:10px;
    width:auto;
    bottom:80px;
  }
  #iu-chat-btn{ right:14px; bottom:14px; }
}