:root{--bg: #09090b;--surface: #18181b;--border: #27272a;--text: #fafafa;--muted: #a1a1aa;--primary: #2563eb;--primary-hover: #1d4ed8;--user-bg: #1e3a5f;--radius: 12px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--text);height:100dvh}#root{height:100%}.app{display:flex;flex-direction:column;height:100%}header{padding:14px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}header .indicator{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 6px #22c55e88}header h1{font-size:14px;font-weight:600;letter-spacing:-.01em}.messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:12px;scroll-behavior:smooth}.message{max-width:680px;font-size:14px;line-height:1.65;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.message.user{align-self:flex-end;background:var(--user-bg);padding:10px 14px;border-radius:var(--radius) var(--radius) 4px var(--radius)}.message.assistant{align-self:flex-start;background:var(--surface);padding:14px 16px;border-radius:var(--radius) var(--radius) var(--radius) 4px;word-wrap:break-word}.message.assistant h1,.message.assistant h2,.message.assistant h3{margin:12px 0 6px;line-height:1.3}.message.assistant h1{font-size:18px}.message.assistant h2{font-size:16px}.message.assistant h3{font-size:14px;color:var(--muted)}.message.assistant p{margin:6px 0}.message.assistant table{width:100%;border-collapse:collapse;margin:10px 0;font-size:13px}.message.assistant th,.message.assistant td{border:1px solid var(--border);padding:6px 10px;text-align:left}.message.assistant th{background:var(--bg);font-weight:600}.message.assistant pre{background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:10px 12px;overflow-x:auto;margin:8px 0;font-size:12px}.message.assistant code{font-family:SF Mono,Fira Code,monospace;font-size:12px;background:var(--bg);padding:2px 5px;border-radius:4px}.message.assistant pre code{background:none;padding:0}.message.assistant ul{margin:6px 0;padding-left:20px}.message.assistant li{margin:3px 0}.message.assistant hr{border:none;border-top:1px solid var(--border);margin:12px 0}.message.assistant strong{color:#e2e8f0}.message.assistant.streaming:after{content:"▍";animation:blink .6s infinite;color:var(--primary)}@keyframes blink{50%{opacity:0}}.message.error{align-self:center;background:#451a1a;color:#fca5a5;font-size:13px;padding:8px 14px;border-radius:8px}.input-bar{padding:14px 20px;border-top:1px solid var(--border);display:flex;align-items:flex-end;gap:10px}.input-bar textarea{flex:1;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:11px 14px;color:var(--text);font-size:14px;font-family:inherit;outline:none;transition:border-color .15s;resize:none;min-height:20px;max-height:150px;field-sizing:content}.input-bar textarea:focus{border-color:var(--primary)}.input-bar textarea::placeholder{color:var(--muted)}.input-bar button{background:var(--primary);color:#fff;border:none;border-radius:8px;padding:11px 18px;font-size:13px;font-weight:500;cursor:pointer;transition:background .15s;white-space:nowrap}.input-bar button:hover:not(:disabled){background:var(--primary-hover)}.input-bar button:disabled{opacity:.4;cursor:not-allowed}.login{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:16px}.login h1{font-size:20px;font-weight:600}.login p{color:var(--muted);font-size:14px;margin-bottom:8px}.user-info{margin-left:auto;display:flex;align-items:center;gap:8px}.user-info img{width:24px;height:24px;border-radius:50%}.user-info span{font-size:13px;color:var(--muted)}.sign-out{background:none;border:1px solid var(--border);color:var(--muted);font-size:12px;padding:4px 10px;border-radius:6px;cursor:pointer;transition:color .15s,border-color .15s}.sign-out:hover{color:var(--text);border-color:var(--text)}