: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}}*{margin:0;padding:0;box-sizing:border-box;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}body{background-color:#f5f5f5;color:#333}#root{max-width:100%;height:100vh;display:flex;justify-content:center;align-items:center}.app{width:100%;max-width:800px;height:90vh;background-color:#fff;border-radius:12px;box-shadow:0 8px 24px #0000001a;display:flex;flex-direction:column;overflow:hidden;margin:0 20px}.app>div:first-of-type{background-color:#4285f4;color:#fff;padding:16px;font-weight:500;display:flex;align-items:center;justify-content:space-between;box-shadow:0 2px 5px #0000001a}.message-container{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column-reverse}.message-item{display:flex;align-items:flex-start;margin-bottom:16px;animation:fadeIn .3s ease-in-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message-item img{width:40px;height:40px;border-radius:50%;margin-right:12px;object-fit:cover}.message-content{background-color:#f0f2f5;padding:12px 16px;border-radius:18px;max-width:70%;word-break:break-word}.message-content p{margin:0;line-height:1.4}.input-area{display:flex;padding:16px;border-top:1px solid #eee;background-color:#fff}.input-area input{flex:1;padding:12px 16px;border:1px solid #ddd;border-radius:24px;outline:none;font-size:16px;margin-right:8px;transition:border .3s ease}.input-area input:focus{border-color:#4285f4}button{background-color:#4285f4;color:#fff;border:none;border-radius:24px;padding:12px 20px;font-size:16px;font-weight:500;cursor:pointer;transition:background-color .3s ease;outline:none}button:hover{background-color:#3367d6}button:active{transform:scale(.98)}.send-button{margin-right:8px}.sign-out-button{background-color:transparent;color:#fff;padding:8px 16px;font-size:14px}.login-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;background-color:#f5f5f5}.login-screen button{display:flex;align-items:center;padding:12px 24px;font-size:18px;box-shadow:0 4px 8px #0000001a}.login-screen button:hover{box-shadow:0 6px 12px #00000026}