:root{--nlchat-primary:#111827;--nlchat-accent:#60bd68;--nlchat-accent-dark:#4da857;--nlchat-accent-glow:#60bd684d;--nlchat-bg:#fff;--nlchat-surface:#f8fafc;--nlchat-border:#0000000f;--nlchat-text:#1e293b;--nlchat-text-muted:#94a3b8;--nlchat-guest-bubble:#111827;--nlchat-guest-text:#fff;--nlchat-host-bubble:#f1f5f9;--nlchat-host-text:#1e293b;--nlchat-system-bubble:#f0fdf4;--nlchat-system-text:#166534;--nlchat-shadow:0 25px 60px -12px #00000040;--nlchat-radius:24px;--nlchat-panel-width:400px;--nlchat-panel-height:600px;--nlchat-fab-size:60px;--nlchat-transition:cubic-bezier(.33,1,.68,1)}.nlchat-fab{z-index:9999;width:var(--nlchat-fab-size);height:var(--nlchat-fab-size);cursor:pointer;background:linear-gradient(135deg,var(--nlchat-accent),var(--nlchat-accent-dark));color:#fff;box-shadow:0 4px 15px var(--nlchat-accent-glow),0 2px 8px #0000001a;transition:all .4s var(--nlchat-transition);animation:nlchat-fab-entrance .6s var(--nlchat-transition)both;border:none;border-radius:50%;justify-content:center;align-items:center;animation-delay:1s;display:flex;position:fixed;bottom:24px;right:24px}.nlchat-fab:hover{box-shadow:0 8px 30px var(--nlchat-accent-glow),0 4px 15px #00000026;transform:scale(1.08)}.nlchat-fab:active{transform:scale(.95)}.nlchat-fab--open{background:var(--nlchat-primary);box-shadow:0 4px 15px #0003}.nlchat-fab--open:hover{box-shadow:0 8px 25px #0000004d}@keyframes nlchat-fab-entrance{0%{opacity:0;transform:scale(0)translateY(20px)}to{opacity:1;transform:scale(1)translateY(0)}}.nlchat-fab-badge{background:#ef4444;border:3px solid #fff;border-radius:50%;width:18px;height:18px;animation:2s infinite nlchat-pulse-badge;position:absolute;top:-2px;right:-2px}@keyframes nlchat-pulse-badge{0%,to{transform:scale(1)}50%{transform:scale(1.2)}}.nlchat-icon{width:26px;height:26px}.nlchat-icon-sm{width:18px;height:18px}.nlchat-panel{bottom:calc(24px + var(--nlchat-fab-size) + 16px);z-index:9998;width:var(--nlchat-panel-width);max-height:var(--nlchat-panel-height);background:var(--nlchat-bg);border-radius:var(--nlchat-radius);box-shadow:var(--nlchat-shadow);border:1px solid var(--nlchat-border);opacity:0;visibility:hidden;transform-origin:100% 100%;transition:all .35s var(--nlchat-transition);pointer-events:none;flex-direction:column;display:flex;position:fixed;right:24px;overflow:hidden;transform:translateY(20px)scale(.95)}.nlchat-panel--open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)scale(1)}.nlchat-panel--minimized{max-height:72px}.nlchat-header{background:linear-gradient(135deg,var(--nlchat-primary),#1e293b);color:#fff;flex-shrink:0;justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.nlchat-header-info{align-items:center;gap:12px;display:flex}.nlchat-avatar{border:2px solid #fff3;border-radius:50%;flex-shrink:0;width:40px;height:40px;position:relative;overflow:hidden}.nlchat-avatar img{-o-object-fit:cover;object-fit:cover;width:100%;height:100%}.nlchat-online-dot{background:var(--nlchat-accent);border:2px solid var(--nlchat-primary);border-radius:50%;width:10px;height:10px;position:absolute;bottom:1px;right:1px}.nlchat-header-title{letter-spacing:.02em;font-size:15px;font-weight:700}.nlchat-header-subtitle{opacity:.7;align-items:center;gap:6px;margin-top:2px;font-size:11px;display:flex}.nlchat-pulse{background:var(--nlchat-accent);border-radius:50%;width:6px;height:6px;animation:2s infinite nlchat-pulse-dot}@keyframes nlchat-pulse-dot{0%,to{opacity:1}50%{opacity:.4}}.nlchat-header-actions{gap:4px;display:flex}.nlchat-header-btn{color:#fff;cursor:pointer;background:#ffffff1a;border:none;border-radius:8px;justify-content:center;align-items:center;width:32px;height:32px;transition:background .2s;display:flex}.nlchat-header-btn:hover{background:#fff3}.nlchat-intro{flex-direction:column;flex:1;display:flex;overflow-y:auto}.nlchat-intro-hero{background:linear-gradient(180deg,#f0fdf4 0%,var(--nlchat-bg)100%);padding:32px 24px 24px;position:relative;overflow:hidden}.nlchat-intro-glow{background:var(--nlchat-accent-glow);filter:blur(60px);pointer-events:none;border-radius:50%;width:160px;height:160px;position:absolute;top:-40px;right:-40px}.nlchat-intro-title{color:var(--nlchat-text);margin-bottom:8px;font-size:28px;font-weight:800;position:relative}.nlchat-intro-text{color:var(--nlchat-text-muted);font-size:14px;line-height:1.6;position:relative}.nlchat-intro-form{flex-direction:column;gap:16px;padding:8px 24px 24px;display:flex}.nlchat-field{flex-direction:column;gap:6px;display:flex}.nlchat-label{color:var(--nlchat-text);text-transform:uppercase;letter-spacing:.05em;font-size:12px;font-weight:600}.nlchat-optional{text-transform:none;letter-spacing:normal;color:var(--nlchat-text-muted);font-weight:400}.nlchat-input{color:var(--nlchat-text);background:var(--nlchat-surface);border:1.5px solid #e2e8f0;border-radius:12px;outline:none;padding:12px 16px;font-family:inherit;font-size:14px;transition:border-color .2s,box-shadow .2s}.nlchat-input:focus{border-color:var(--nlchat-accent);box-shadow:0 0 0 3px var(--nlchat-accent-glow)}.nlchat-input::placeholder{color:#cbd5e1}.nlchat-start-btn{color:#fff;background:linear-gradient(135deg,var(--nlchat-accent),var(--nlchat-accent-dark));cursor:pointer;letter-spacing:.02em;border:none;border-radius:14px;justify-content:center;align-items:center;gap:8px;margin-top:4px;padding:14px 24px;font-size:15px;font-weight:700;transition:all .3s;display:flex}.nlchat-start-btn:hover{box-shadow:0 6px 20px var(--nlchat-accent-glow);transform:translateY(-1px)}.nlchat-start-btn:active{transform:translateY(0)}.nlchat-messages{background:var(--nlchat-surface);min-height:200px;max-height:calc(var(--nlchat-panel-height) - 72px - 68px - 40px);flex-direction:column;flex:1;gap:12px;padding:20px 16px;display:flex;overflow-y:auto}.nlchat-messages::-webkit-scrollbar{width:5px}.nlchat-messages::-webkit-scrollbar-track{background:0 0}.nlchat-messages::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:10px}.nlchat-messages::-webkit-scrollbar-thumb:hover{background:#94a3b8}.nlchat-msg{max-width:85%;animation:nlchat-msg-in .3s var(--nlchat-transition);gap:8px;display:flex}@keyframes nlchat-msg-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.nlchat-msg--guest{flex-direction:row-reverse;align-self:flex-end}.nlchat-msg--host,.nlchat-msg--system{align-self:flex-start}.nlchat-msg-avatar{border-radius:50%;flex-shrink:0;width:28px;height:28px;margin-top:4px;overflow:hidden}.nlchat-msg-avatar img{-o-object-fit:cover;object-fit:cover;width:100%;height:100%}.nlchat-msg-content{flex-direction:column;gap:4px;display:flex}.nlchat-msg--guest .nlchat-msg-content{align-items:flex-end}.nlchat-msg-bubble{word-break:break-word;white-space:pre-wrap;border-radius:18px;padding:12px 16px;font-size:14px;line-height:1.5}.nlchat-msg--guest .nlchat-msg-bubble{background:var(--nlchat-guest-bubble);color:var(--nlchat-guest-text);border-bottom-right-radius:6px}.nlchat-msg--host .nlchat-msg-bubble{background:var(--nlchat-host-bubble);color:var(--nlchat-host-text);border-bottom-left-radius:6px}.nlchat-msg--system .nlchat-msg-bubble{background:var(--nlchat-system-bubble);color:var(--nlchat-system-text);border-bottom-left-radius:6px;font-size:13px}.nlchat-msg-time{color:var(--nlchat-text-muted);padding:0 4px;font-size:10px}.nlchat-typing{background:var(--nlchat-host-bubble);border-radius:18px 18px 18px 6px;align-items:center;gap:4px;padding:12px 18px;display:flex}.nlchat-typing span{background:#94a3b8;border-radius:50%;width:7px;height:7px;animation:1.4s ease-in-out infinite both nlchat-bounce}.nlchat-typing span:first-child{animation-delay:-.32s}.nlchat-typing span:nth-child(2){animation-delay:-.16s}.nlchat-typing span:nth-child(3){animation-delay:0s}@keyframes nlchat-bounce{0%,80%,to{opacity:.4;transform:scale(.6)}40%{opacity:1;transform:scale(1)}}.nlchat-input-bar{border-top:1px solid var(--nlchat-border);background:var(--nlchat-bg);align-items:flex-end;gap:8px;padding:12px 16px;display:flex}.nlchat-textarea{resize:none;color:var(--nlchat-text);background:var(--nlchat-surface);border:1.5px solid #e2e8f0;border-radius:14px;outline:none;flex:1;min-height:40px;max-height:100px;padding:10px 14px;font-family:inherit;font-size:14px;line-height:1.4;transition:border-color .2s,box-shadow .2s}.nlchat-textarea:focus{border-color:var(--nlchat-accent);box-shadow:0 0 0 3px var(--nlchat-accent-glow)}.nlchat-textarea::placeholder{color:#cbd5e1}.nlchat-send-btn{background:linear-gradient(135deg,var(--nlchat-accent),var(--nlchat-accent-dark));color:#fff;cursor:pointer;border:none;border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;width:42px;height:42px;transition:all .2s;display:flex}.nlchat-send-btn:hover:not(:disabled){box-shadow:0 4px 12px var(--nlchat-accent-glow);transform:scale(1.05)}.nlchat-send-btn:active:not(:disabled){transform:scale(.95)}.nlchat-send-btn:disabled{opacity:.4;cursor:not-allowed}.nlchat-footer{background:var(--nlchat-bg);justify-content:center;padding:8px 16px 12px;display:flex}.nlchat-new-chat-btn{color:var(--nlchat-text-muted);cursor:pointer;letter-spacing:.03em;background:0 0;border:none;border-radius:8px;padding:4px 12px;font-size:11px;font-weight:600;transition:all .2s}.nlchat-new-chat-btn:hover{color:var(--nlchat-accent);background:#f0fdf4}@media (max-width:480px){.nlchat-panel{border:none;border-radius:0;width:100%;max-height:100dvh;bottom:0;left:0;right:0}.nlchat-panel--open{border-radius:var(--nlchat-radius)var(--nlchat-radius)0 0;max-height:85dvh}.nlchat-fab{bottom:16px;right:16px}.nlchat-messages{max-height:calc(85dvh - 180px)}}