.ott-floating {
  position: fixed; bottom: 20px; right: 20px;
  width: 60px; height: 60px; border-radius: 50%;
  background: #25D366; color: #fff; border:none;
  font-size: 26px; cursor: pointer;
  box-shadow: 0 4px 10px rgba(0,0,0,.3);
  z-index:9999;
}
.ott-short-btn {
  background: #25D366; color: #fff; font-weight: bold;
  border: none; border-radius: 50px;
  padding: 16px 24px; font-size: 16px;
  display: inline-flex; align-items: center; gap: 10px;
  cursor: pointer; box-shadow: 0 6px 20px rgba(0,0,0,.25);
}
#ott-window {
  position: fixed; bottom: 90px; right: 20px;
  width: 320px; height: 460px; background: #fff;
  border-radius: 12px; overflow: hidden;
  box-shadow: 0 6px 20px rgba(0,0,0,.25);
  display: none; flex-direction: column;
  z-index:9999;
}
.ott-header {
  background: #128C7E; color: #fff; padding: 12px;
  font-size: 14px; display:flex; justify-content: space-between;
  align-items: center;
}
.ott-agent { display:flex; align-items:center; gap:8px; }
.ott-agent .avatar {
  width:28px; height:28px; border-radius:50%;
  background:#fff; color:#128C7E;
  display:flex; align-items:center; justify-content:center;
  font-size:16px; position:relative;
}
.ott-agent .status {
  width:8px; height:8px; border-radius:50%;
  background:#0f0; position:absolute;
  bottom:2px; right:2px; border:1px solid #fff;
}
.ott-body { flex:1; padding:10px; overflow-y:auto; background:#ECE5DD; }
.ott-footer { display:flex; padding:8px; background:#f9f9f9; }
.ott-footer input {
  flex:1; padding:8px; border:1px solid #ddd;
  border-radius:20px; outline:none;
}
.ott-footer button {
  margin-left:8px; background:#25D366;
  border:none; border-radius:50%; width:40px; height:40px;
  color:#fff; font-size:16px; cursor:pointer;
}
.ott-msg { margin:6px 0; padding:8px 12px; border-radius:15px; max-width:75%; clear:both; }
.ott-bot { background:#fff; float:left; }
.ott-user { background:#25D366; color:#fff; float:right; }
.ott-opt {
  background:#fff; border:1px solid #ccc;
  padding:6px 10px; margin:4px; border-radius:6px;
  cursor:pointer; font-size:13px; display:inline-block;
}
.ott-submit {
  background:#25D366; color:#fff; border:none;
  padding:8px 16px; margin-top:10px;
  border-radius:6px; cursor:pointer; font-size:14px;
}
.ott-summary-card {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 12px;
  padding: 12px;
  margin-top: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  font-size: 13px;
}
.ott-summary-card h4 {
  margin: 0 0 8px 0;
  font-size: 14px;
  color: #128C7E;
}
.ott-summary-card p {
  margin: 4px 0;
  line-height: 1.4;
}
.ott-summary-card .ott-submit {
  width: 100%;
  margin-top: 10px;
  background: #25D366;
  color: #fff;
  font-weight: bold;
  border: none;
  border-radius: 6px;
  padding: 10px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.3s;
}
.ott-summary-card .ott-submit:hover {
  background: #1ebe57;
}