:root{--bg: #0a0a0a;--panel: #161616;--border: #262626;--text: #e8e8e8;--muted: #9a9a9a;--accent: #d4a574;--user-bubble: #2a2a2a;--assistant-bubble: #1a1a1a;--error: #d4564f}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Inter,Segoe UI,sans-serif;font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}button{font-family:inherit;cursor:pointer}input{font-family:inherit}.login{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:24px}.login-card{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:48px 40px;max-width:380px;width:100%;text-align:center}.login-card h1{margin:0 0 4px;font-size:32px;font-weight:600;letter-spacing:-.02em}.subtitle{margin:0 0 32px;color:var(--muted);font-size:14px}.hint{margin:0 0 24px;color:var(--muted);font-size:14px}.google-btn-host{display:flex;justify-content:center}.error{color:var(--error);font-size:13px;margin-top:16px}.chat-app{display:flex;flex-direction:column;height:100vh;max-width:800px;margin:0 auto}header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border);background:var(--bg)}.brand{font-weight:600;font-size:18px;letter-spacing:-.01em}.right{display:flex;align-items:center;gap:12px}.email{font-size:13px;color:var(--muted)}button.ghost{background:transparent;border:1px solid var(--border);color:var(--muted);padding:6px 12px;border-radius:8px;font-size:13px}button.ghost:hover{color:var(--text);border-color:var(--text)}main{flex:1;overflow-y:auto;padding:24px 20px;display:flex;flex-direction:column;gap:12px}.welcome{margin:auto;text-align:center;color:var(--muted);max-width:400px}.welcome p:first-child{color:var(--text);font-size:20px;margin-bottom:12px}.msg{display:flex;width:100%}.msg-user{justify-content:flex-end}.msg-assistant{justify-content:flex-start}.msg-bubble{max-width:75%;padding:12px 16px;border-radius:16px;white-space:pre-wrap;word-wrap:break-word}.msg-user .msg-bubble{background:var(--user-bubble);border-bottom-right-radius:4px}.msg-assistant .msg-bubble{background:var(--assistant-bubble);border:1px solid var(--border);border-bottom-left-radius:4px}.msg-bubble.typing{color:var(--muted);font-size:20px;letter-spacing:4px}.error-banner{color:var(--error);background:#d4564f1a;border:1px solid var(--error);padding:10px 14px;border-radius:8px;font-size:13px;text-align:center}footer{display:flex;align-items:center;gap:8px;padding:16px 20px;border-top:1px solid var(--border);background:var(--bg)}footer input{flex:1;background:var(--panel);border:1px solid var(--border);color:var(--text);padding:12px 16px;border-radius:12px;outline:none;font-size:15px}footer input:focus{border-color:var(--accent)}footer input:disabled{opacity:.5}footer button{background:var(--accent);color:#000;border:none;padding:12px 20px;border-radius:12px;font-weight:500;font-size:14px}footer button:disabled{opacity:.4;cursor:not-allowed}button.mic{background:var(--panel);border:1px solid var(--border);color:var(--text);width:48px;height:48px;border-radius:50%;font-size:18px;display:flex;align-items:center;justify-content:center;flex-shrink:0;padding:0}button.mic:hover:not(:disabled){border-color:var(--accent)}button.mic.recording{background:var(--error);color:#fff;border-color:var(--error);animation:pulse 1.2s infinite;font-size:12px;font-weight:600}@keyframes pulse{0%,to{box-shadow:0 0 #d4564f99}50%{box-shadow:0 0 0 8px #d4564f00}}@media (max-width: 640px){header{padding:12px 16px}main{padding:16px 12px}footer{padding:12px}.email{display:none}.msg-bubble{max-width:85%}}