: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}}.chat-window{display:flex;flex-direction:column;height:80vh;max-width:720px;margin:0 auto;border:1px solid #e0e0e0;border-radius:8px;overflow:hidden;background:#fff}.message-list{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:.75rem}.message{max-width:80%;padding:.75rem 1rem;border-radius:12px;word-wrap:break-word;line-height:1.5}.message-user{align-self:flex-end;background:#646cff;color:#fff;border-bottom-right-radius:4px}.message-agent{align-self:flex-start;background:#f0f0f0;color:#333;border-bottom-left-radius:4px}.message-error{align-self:flex-start;background:#fdecea;color:#b71c1c;border-left:3px solid #b71c1c;border-radius:4px}.loading-indicator{align-self:flex-start;padding:.75rem 1rem;color:#888;font-style:italic}.chat-input-area{display:flex;gap:.5rem;padding:.75rem 1rem;border-top:1px solid #e0e0e0;background:#fafafa}.chat-input{flex:1;padding:.5rem .75rem;border:1px solid #ccc;border-radius:6px;font-size:1rem;outline:none}.chat-input:focus{border-color:#646cff}.chat-send-button{padding:.5rem 1.25rem;background:#646cff;color:#fff;border:none;border-radius:6px;font-size:1rem;cursor:pointer}.chat-send-button:disabled{background:#aaa;cursor:not-allowed}@media(max-width:768px){.chat-window{height:70vh;border-radius:0;border-left:none;border-right:none}.message{max-width:90%}}*{box-sizing:border-box;margin:0;padding:0}.app-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1rem}.app-header{text-align:center;max-width:100%}.app-title{font-size:3rem;font-weight:700;color:#646cff;margin-bottom:1rem}.welcome-message{font-size:1.5rem;color:#888}@media(max-width:768px){.app-title{font-size:2.5rem}.welcome-message{font-size:1.25rem}}@media(max-width:480px){.app-title{font-size:2rem}.welcome-message{font-size:1rem}.app-container{padding:.5rem}}