:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif}.app{display:flex;flex-direction:column;height:100vh}.header{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background-color:#1a1a2e;color:#fff}.header h1{font-size:1.5rem;font-weight:600}.user-info{display:flex;align-items:center;gap:1rem}.user-info span{font-size:.9rem;opacity:.8}.sign-out-button{padding:.5rem 1rem;border:1px solid rgba(255,255,255,.3);border-radius:4px;background:transparent;color:#fff;cursor:pointer;transition:background-color .2s}.sign-out-button:hover{background-color:#ffffff1a}.main{flex:1;display:flex;flex-direction:column;overflow:hidden}.chat-container{flex:1;display:flex;flex-direction:column;max-width:800px;margin:0 auto;width:100%;padding:1rem}.messages{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:1rem}.empty-state{flex:1;display:flex;align-items:center;justify-content:center;color:#666}.message{max-width:80%;padding:.75rem 1rem;border-radius:12px;line-height:1.5}.message.user{align-self:flex-end;background-color:#007bff;color:#fff}.message.assistant{align-self:flex-start;background-color:#f0f0f0;color:#333}.message-content.loading{opacity:.7}.input-form{display:flex;gap:.5rem;padding:1rem;border-top:1px solid #eee}.input-form input{flex:1;padding:.75rem 1rem;border:1px solid #ddd;border-radius:8px;font-size:1rem}.input-form input:focus{outline:none;border-color:#007bff}.input-form button{padding:.75rem 1.5rem;background-color:#007bff;color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:1rem;transition:background-color .2s}.input-form button:hover:not(:disabled){background-color:#0056b3}.input-form button:disabled{background-color:#ccc;cursor:not-allowed}