*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{background:#f0f2f5;justify-content:center;align-items:center;height:100dvh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;display:flex}#root{justify-content:center;align-items:center;width:100%;height:100dvh;display:flex}.chat-container{background:#fff;border-radius:16px;flex-direction:column;width:100%;max-width:480px;height:100dvh;max-height:700px;display:flex;overflow:hidden;box-shadow:0 4px 24px #0000001f}@media (width<=520px){.chat-container{max-height:100dvh;box-shadow:none;border-radius:0}}.chat-header{color:#fff;background:#1a1a2e;padding:16px 20px}.chat-header h1{color:#fff;margin-bottom:2px;font-size:16px;font-weight:600}.status{color:#6ee7b7;font-size:12px}.messages{flex-direction:column;flex:1;gap:10px;padding:16px;display:flex;overflow-y:auto}.message{display:flex}.message.user{justify-content:flex-end}.bubble{border-radius:18px;max-width:75%;padding:10px 14px;font-size:14px;line-height:1.5}.message.assistant .bubble{color:#1a1a2e;background:#f0f2f5;border-bottom-left-radius:4px}.message.user .bubble{color:#fff;background:#1a1a2e;border-bottom-right-radius:4px}.bubble.typing{align-items:center;gap:4px;padding:14px 18px;display:flex}.bubble.typing span{background:#9ca3af;border-radius:50%;width:7px;height:7px;animation:1.2s infinite bounce}.bubble.typing span:nth-child(2){animation-delay:.2s}.bubble.typing span:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-6px)}}.input-bar{background:#fff;border-top:1px solid #e5e7eb;gap:8px;padding:12px 16px;display:flex}.input-bar input{border:1px solid #e5e7eb;border-radius:24px;outline:none;flex:1;padding:10px 14px;font-size:14px;transition:border-color .2s}.input-bar input:focus{border-color:#1a1a2e}.voice-btn{cursor:pointer;background:#fff;border:1px solid #e5e7eb;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:42px;height:42px;font-size:18px;transition:background .2s;display:flex}.voice-btn.active{background:#fee2e2;border-color:#ef4444}.input-bar button[type=submit]{color:#fff;cursor:pointer;background:#1a1a2e;border:none;border-radius:24px;flex-shrink:0;padding:10px 18px;font-size:14px;font-weight:500;transition:opacity .2s}.input-bar button[type=submit]:disabled{opacity:.4;cursor:not-allowed}