*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;width:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#e8eaf0;color:#f1f5f9;overflow:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{width:100%;height:100vh}.app{display:flex;flex-direction:column;height:100vh;width:min(780px,100%);margin:0 auto;background:#0f172a;border-left:1px solid #1e293b;border-right:1px solid #1e293b}header{padding:14px 24px;border-bottom:1px solid #1e293b;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;background:#0f172a}.header-left{display:flex;align-items:center;gap:12px}.bot-avatar{width:38px;height:38px;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}.header-title{font-size:14px;font-weight:600;color:#f1f5f9}.header-sub{font-size:12px;color:#64748b;margin-top:2px}.badge{display:flex;align-items:center;gap:6px;padding:4px 10px;border-radius:100px;font-size:12px;font-weight:500}.badge.on{background:#10b9811a;color:#10b981}.badge.off{background:#ef44441a;color:#ef4444}.badge-dot{width:6px;height:6px;border-radius:50%;background:currentColor;flex-shrink:0}.badge.on .badge-dot{animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.35}}.messages{flex:1;overflow-y:auto;padding:24px 24px 8px;display:flex;flex-direction:column;gap:16px}.empty-state{margin:auto;text-align:center;padding:32px 16px;display:flex;flex-direction:column;align-items:center;gap:12px;max-width:440px}.empty-icon{width:64px;height:64px;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:18px;display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:4px}.empty-state h2{font-size:22px;font-weight:600;color:#f1f5f9}.empty-state>p{font-size:14px;color:#64748b;line-height:1.5}.suggestions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:8px}.chip{padding:8px 16px;background:#1e293b;border:1px solid #334155;border-radius:100px;color:#cbd5e1;font-size:13px;cursor:pointer;transition:background .15s,border-color .15s,color .15s}.chip:hover:not(:disabled){background:#263347;border-color:#6366f1;color:#f1f5f9}.chip:disabled{opacity:.45;cursor:not-allowed}.msg{display:flex;align-items:flex-end;gap:8px;max-width:82%}.msg.user{align-self:flex-end;flex-direction:row-reverse}.msg.assistant{align-self:flex-start}.msg-avatar{width:28px;height:28px;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;margin-bottom:2px}.bubble p{padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.65;white-space:pre-wrap;word-break:break-word}.msg.user .bubble p{background:linear-gradient(135deg,#4f46e5,#6366f1);border-bottom-right-radius:4px;color:#fff}.msg.assistant .bubble p{background:#1e293b;border:1px solid #334155;border-bottom-left-radius:4px;color:#e2e8f0}.thinking{display:flex!important;align-items:center;gap:5px;padding:14px 16px!important}.thinking span{display:block;width:7px;height:7px;background:#64748b;border-radius:50%;animation:bounce 1.3s infinite ease-in-out}.thinking span:nth-child(2){animation-delay:.18s}.thinking span:nth-child(3){animation-delay:.36s}@keyframes bounce{0%,60%,to{transform:translateY(0);opacity:.6}30%{transform:translateY(-6px);opacity:1}}form{display:flex;align-items:center;gap:10px;padding:14px 24px;border-top:1px solid #1e293b;flex-shrink:0;background:#0f172a}input{flex:1;padding:11px 16px;background:#1e293b;border:1px solid #334155;border-radius:12px;color:#f1f5f9;font-size:14px;font-family:inherit;outline:none;transition:border-color .15s}input:focus{border-color:#6366f1}input::placeholder{color:#475569}input:disabled{opacity:.5}form button[type=submit]{width:42px;height:42px;padding:0;background:#6366f1;border:none;border-radius:10px;color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:background .15s,transform .1s}form button[type=submit]:hover:not(:disabled){background:#818cf8;transform:scale(1.05)}form button[type=submit]:disabled{opacity:.4;cursor:not-allowed}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#334155;border-radius:2px}