:root{color:#0f172a;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:radial-gradient(circle at 0 0,#e0f2fe 0%,#f8fafc 50%,#e2e8f0 100%);font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;font-weight:400;line-height:1.5}*{box-sizing:border-box}body{margin:0}#root{min-height:100dvh}.chat-shell{justify-content:center;align-items:center;min-height:100dvh;padding:32px 20px;display:flex}.chat-card{background-color:#fff;border:1px solid #d5d9de;border-radius:16px;grid-template-rows:auto auto 1fr auto;gap:16px;width:min(920px,100%);padding:20px;display:grid;box-shadow:0 16px 40px #00224414}.chat-header{justify-content:space-between;align-items:center;gap:12px;display:flex}.chat-header h1{margin:0;font-size:1.35rem}.connection-state{border-radius:999px;align-items:center;padding:6px 10px;font-size:.8rem;font-weight:600;display:inline-flex}.connection-state.connected{color:#0f5132;background:#d1e7dd}.connection-state.disconnected{color:#842029;background:#f8d7da}.error-banner{color:#842029;background:#f8d7da;border:1px solid #f1aeb5;border-radius:8px;margin:0;padding:10px 12px}.message-list{background:#f9fbfd;border:1px solid #e4e8ee;border-radius:12px;height:min(56vh,540px);padding:12px;overflow-y:auto}.empty-state{color:#6b7280;margin:0}.message-item{background:#fff;border:1px solid #dde4ec;border-radius:10px;margin:0 0 10px;padding:10px 12px}.message-item:last-child{margin-bottom:0}.message-header{justify-content:space-between;align-items:center;gap:8px;margin-bottom:6px;display:flex}.message-user{color:#0f172a}.message-time{color:#64748b;font-size:.82rem}.message-text{color:#1f2937;white-space:pre-wrap;word-break:break-word;margin:0}.message-sentiment{text-transform:capitalize;border-radius:999px;align-items:center;margin-top:8px;padding:2px 8px;font-size:.75rem;font-weight:600;display:inline-flex}.message-sentiment.positive{color:#166534;background:#dcfce7}.message-sentiment.negative{color:#991b1b;background:#fee2e2}.message-sentiment.neutral{color:#374151;background:#e5e7eb}.message-form{gap:8px;display:grid}.field-label{color:#334155;font-size:.82rem;font-weight:600}.text-input{border:1px solid #cfd8e3;border-radius:10px;outline:none;height:40px;padding:0 12px;font-size:.95rem}.text-input:focus{border-color:#2563eb;box-shadow:0 0 0 3px #2563eb29}.message-row{gap:8px;display:flex}.message-row .text-input{flex:1}.send-button{color:#fff;cursor:pointer;background:#2563eb;border:none;border-radius:10px;min-width:110px;font-weight:600;transition:background .2s}.send-button:hover:not(:disabled){background:#1d4ed8}.send-button:disabled{cursor:not-allowed;background:#93c5fd}@media (width<=700px){.chat-shell,.chat-card{padding:14px}.message-row{flex-direction:column}.send-button{min-height:40px}}