:root{--avenir-primary:#4f46e5;}
#avenir-scb-launcher{position:fixed;bottom:24px;z-index:99998;width:60px;height:60px;border-radius:50%;background:var(--avenir-primary);color:#fff;border:none;cursor:pointer;box-shadow:0 10px 25px rgba(0,0,0,.18);display:flex;align-items:center;justify-content:center;transition:transform .15s ease;}
#avenir-scb-launcher:hover{transform:scale(1.05);}
#avenir-scb-launcher svg{width:28px;height:28px;}
.avenir-pos-right #avenir-scb-launcher{right:24px;}
.avenir-pos-left  #avenir-scb-launcher{left:24px;}
#avenir-scb-panel{position:fixed;bottom:96px;z-index:99999;width:360px;max-width:calc(100vw - 32px);height:520px;max-height:calc(100vh - 120px);background:#fff;border-radius:16px;box-shadow:0 20px 50px rgba(0,0,0,.22);display:none;flex-direction:column;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;}
.avenir-pos-right #avenir-scb-panel{right:24px;}
.avenir-pos-left  #avenir-scb-panel{left:24px;}
#avenir-scb-panel.open{display:flex;}
.avenir-scb-header{background:var(--avenir-primary);color:#fff;padding:14px 16px;display:flex;justify-content:space-between;align-items:center;}
.avenir-scb-header strong{font-size:15px;}
.avenir-scb-close{background:transparent;border:none;color:#fff;cursor:pointer;font-size:20px;line-height:1;}
.avenir-scb-body{flex:1;overflow-y:auto;padding:14px;background:#f9fafb;}
.avenir-scb-msg{margin:6px 0;display:flex;}
.avenir-scb-msg .bubble{max-width:80%;padding:10px 12px;border-radius:14px;font-size:14px;line-height:1.4;white-space:pre-wrap;word-wrap:break-word;}
.avenir-scb-msg.user{justify-content:flex-end;}
.avenir-scb-msg.user .bubble{background:var(--avenir-primary);color:#fff;border-bottom-right-radius:4px;}
.avenir-scb-msg.bot .bubble{background:#fff;color:#111827;border:1px solid #e5e7eb;border-bottom-left-radius:4px;}
.avenir-scb-msg .bubble a{color:var(--avenir-primary);text-decoration:underline;}
.avenir-scb-source{display:inline-block;margin-top:6px;font-size:12px;}
.avenir-scb-typing{display:inline-block;padding:8px 12px;background:#fff;border:1px solid #e5e7eb;border-radius:14px;}
.avenir-scb-typing span{display:inline-block;width:6px;height:6px;border-radius:50%;background:#9ca3af;margin:0 1px;animation:avenir-bounce 1.2s infinite;}
.avenir-scb-typing span:nth-child(2){animation-delay:.15s;}
.avenir-scb-typing span:nth-child(3){animation-delay:.3s;}
@keyframes avenir-bounce{0%,80%,100%{transform:translateY(0);opacity:.5;}40%{transform:translateY(-4px);opacity:1;}}
.avenir-scb-input{display:flex;border-top:1px solid #e5e7eb;background:#fff;}
.avenir-scb-input input{flex:1;border:none;padding:12px 14px;font-size:14px;outline:none;}
.avenir-scb-input button{background:var(--avenir-primary);color:#fff;border:none;padding:0 16px;cursor:pointer;font-weight:600;}
.avenir-scb-form{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:12px;margin-top:8px;}
.avenir-scb-form h4{margin:0 0 8px;font-size:14px;}
.avenir-scb-form input,.avenir-scb-form textarea{width:100%;padding:8px 10px;border:1px solid #d1d5db;border-radius:6px;font-size:13px;margin-bottom:6px;box-sizing:border-box;font-family:inherit;}
.avenir-scb-form button{width:100%;background:var(--avenir-primary);color:#fff;border:none;padding:8px;border-radius:6px;cursor:pointer;font-weight:600;}
.avenir-scb-form .err{color:#b91c1c;font-size:12px;margin:4px 0;}
.avenir-scb-form .ok{color:#065f46;font-size:13px;margin:4px 0;}