:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,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}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}.app-container{width:100%;max-width:900px;padding:1rem;text-align:center}h1{font-size:2rem;line-height:1.1;margin-bottom:2rem}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}}:host{display:block;width:100%;max-width:800px;margin:0 auto}.chat-header{display:flex;justify-content:flex-end;padding:8px 16px 0;background:transparent}.clear-cache-btn{background:#ff4d4f;color:#fff;border:none;border-radius:16px;padding:6px 16px;font-size:14px;cursor:pointer;transition:background .2s}.clear-cache-btn:hover{background:#d9363e}.chat-container{display:flex;flex-direction:column;height:600px;border-radius:8px;overflow:hidden;box-shadow:0 4px 12px #00000026;background-color:var(--chat-bg-color, #f5f5f5)}.chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.message{max-width:80%;padding:8px 16px;border-radius:18px;animation:fadeIn .3s ease-in-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.user-message{align-self:flex-end;background-color:var(--user-msg-bg, #0084ff);color:var(--user-msg-color, white)}.ai-message{align-self:flex-start;background-color:var(--ai-msg-bg, #e5e5ea);color:var(--ai-msg-color, #333)}.message-content{display:flex;flex-direction:column}.message-sender{font-size:.8rem;font-weight:700;margin-bottom:4px}.message p{margin:0;word-break:break-word}.chat-input{display:flex;padding:16px;background-color:var(--input-bg, white);border-top:1px solid #e0e0e0}input{flex:1;padding:12px 16px;border:1px solid #ccc;border-radius:24px;font-size:16px;outline:none;transition:border-color .2s}input:focus{border-color:#0084ff}button{margin-left:8px;padding:0 20px;background-color:#0084ff;color:#fff;border:none;border-radius:24px;font-size:16px;cursor:pointer;transition:background-color .2s}button:hover{background-color:#0074e0}button:disabled{background-color:#ccc;cursor:not-allowed}@media (prefers-color-scheme: dark){.chat-container{--chat-bg-color: #1a1a1a;--input-bg: #242424}.ai-message{--ai-msg-bg: #2d2d2d;--ai-msg-color: #e0e0e0}input{background-color:#333;color:#fff;border-color:#444}}.rag-toggle{float:right;display:flex;align-items:center;gap:5px;font-size:.9rem}.system-message{background-color:#f8f9fa;font-style:italic;text-align:center;padding:8px;border-radius:10px}.sources{margin-top:8px;font-size:.85rem;cursor:pointer}.sources summary{color:#0d6efd;font-weight:700}.sources-content{background-color:#f8f9fa;padding:10px;border-radius:4px;margin-top:5px;max-height:200px;overflow-y:auto;border-left:3px solid #6c757d}