.app{width:100%;max-width:900px;height:90vh;display:flex;justify-content:center;align-items:center}.chat-container{width:100%;height:100%;background:#fff;border-radius:20px;box-shadow:0 20px 60px #0000004d;display:flex;flex-direction:column;overflow:hidden}.chat-header{background:linear-gradient(135deg,#667eea,#764ba2);padding:20px 30px;color:#fff;box-shadow:0 2px 10px #0000001a}.header-content{display:flex;align-items:center;gap:12px}.header-emoji{font-size:28px;animation:bounce 2s infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.chat-header h1{font-size:24px;font-weight:600;flex:1}.status-dot{width:10px;height:10px;background:#4ade80;border-radius:50%;animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.messages-container{flex:1;overflow-y:auto;padding:20px;background:#f8f9fa;display:flex;flex-direction:column;gap:16px}.messages-container::-webkit-scrollbar{width:8px}.messages-container::-webkit-scrollbar-track{background:#f1f1f1;border-radius:10px}.messages-container::-webkit-scrollbar-thumb{background:#888;border-radius:10px}.messages-container::-webkit-scrollbar-thumb:hover{background:#555}.message{display:flex;margin-bottom:8px}.message.user{justify-content:flex-end}.message-content{display:flex;align-items:flex-end;gap:10px;max-width:75%}.message.user .message-content{flex-direction:row-reverse}.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;box-shadow:0 2px 8px #00000026}.avatar.user{background:linear-gradient(135deg,#f093fb,#f5576c)}.message-bubble{background:#fff;padding:14px 18px;border-radius:18px;box-shadow:0 2px 8px #0000001a;position:relative}.message.user .message-bubble{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.message-bubble p{margin:0;line-height:1.6;word-wrap:break-word}.message-bubble.loading{background:#e9ecef;padding:16px 20px}.sources{margin-top:8px;padding-top:8px;border-top:1px solid rgba(0,0,0,.1)}.message.user .sources{border-top-color:#ffffff4d}.sources small{color:#6c757d;font-size:11px}.message.user .sources small{color:#fffc}.typing-indicator{display:flex;gap:4px;align-items:center}.typing-indicator span{width:8px;height:8px;border-radius:50%;background:#667eea;animation:typing 1.4s infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0);opacity:.7}30%{transform:translateY(-10px);opacity:1}}.input-container{padding:20px;background:#fff;border-top:1px solid #e9ecef;display:flex;gap:12px;align-items:flex-end}.input-container textarea{flex:1;border:2px solid #e9ecef;border-radius:20px;padding:12px 18px;font-size:15px;font-family:inherit;resize:none;max-height:120px;transition:all .3s}.input-container textarea:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.input-container textarea:disabled{background:#f8f9fa;cursor:not-allowed}.send-button{width:50px;height:50px;border-radius:50%;border:none;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-size:20px;cursor:pointer;transition:all .3s;box-shadow:0 4px 12px #667eea66;flex-shrink:0}.send-button:hover:not(:disabled){transform:scale(1.1);box-shadow:0 6px 20px #667eea99}.send-button:active:not(:disabled){transform:scale(.95)}.send-button:disabled{opacity:.5;cursor:not-allowed;transform:none}@media (max-width: 768px){.app{height:100vh;padding:0}.chat-container{border-radius:0}.message-content{max-width:85%}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;display:flex;justify-content:center;align-items:center;padding:20px}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}