.chat-container{display:flex;flex-direction:column;height:100%;background:#f8f9fa}.messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:16px}.welcome-message{text-align:center;color:#6c757d;padding:40px 20px}.welcome-message p{margin-bottom:12px;font-size:16px}.examples{font-size:14px;color:#adb5bd;font-style:italic}.message{display:flex;max-width:85%;animation:fadeIn .3s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{align-self:flex-end}.message.assistant{align-self:flex-start}.message-content{padding:12px 16px;border-radius:12px;word-wrap:break-word}.message.user .message-content{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-bottom-right-radius:4px}.message.assistant .message-content{background:#fff;color:#212529;box-shadow:0 2px 8px #0000001a;border-bottom-left-radius:4px}.message-header{font-size:12px;margin-bottom:6px;opacity:.8;text-transform:uppercase;letter-spacing:.5px}.message-text{line-height:1.6;white-space:pre-wrap}.sources{margin-top:12px;padding-top:12px;border-top:1px solid rgba(0,0,0,.1);font-size:13px}.message.user .sources{border-top-color:#fff3;color:#ffffffe6}.sources strong{display:block;margin-bottom:8px;font-size:12px;opacity:.8}.sources ul{list-style:none;padding:0;margin:0}.sources li{margin-bottom:6px;padding:6px;background:#0000000d;border-radius:4px}.message.user .sources li{background:#ffffff1a}.source-name{display:block;font-weight:600;margin-bottom:4px}.source-preview{display:block;opacity:.8;font-size:12px}.loading-dots{display:flex;gap:4px;padding:8px 0}.loading-dots span{width:8px;height:8px;border-radius:50%;background:#667eea;animation:bounce 1.4s infinite ease-in-out both}.loading-dots span:nth-child(1){animation-delay:-.32s}.loading-dots span:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.input-area{display:flex;gap:12px;padding:16px;background:#fff;border-top:1px solid #e9ecef;align-items:flex-end}.input-field{flex:1;padding:12px 16px;border:2px solid #e9ecef;border-radius:12px;font-size:14px;font-family:inherit;resize:none;max-height:120px;transition:border-color .2s}.input-field:focus{outline:none;border-color:#667eea}.input-field:disabled{background:#f8f9fa;cursor:not-allowed}.send-button{padding:12px 24px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:12px;font-size:14px;font-weight:600;cursor:pointer;transition:transform .2s,opacity .2s;white-space:nowrap}.send-button:hover:not(:disabled){transform:translateY(-2px)}.send-button:active:not(:disabled){transform:translateY(0)}.send-button:disabled{opacity:.5;cursor:not-allowed}.messages::-webkit-scrollbar{width:8px}.messages::-webkit-scrollbar-track{background:#f1f1f1}.messages::-webkit-scrollbar-thumb{background:#888;border-radius:4px}.messages::-webkit-scrollbar-thumb:hover{background:#555}.app{background:#fff;border-radius:16px;box-shadow:0 20px 60px #0000004d;overflow:hidden;display:flex;flex-direction:column;height:90vh;max-height:800px}.app-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:24px;text-align:center}.app-header h1{font-size:28px;margin-bottom:8px;font-weight:600}.app-header p{font-size:14px;opacity:.9}.app-nav{display:flex;gap:12px;justify-content:center;align-items:center;padding:12px 16px;background:#f8f9fa;border-bottom:1px solid #e9ecef}.app-nav button{padding:8px 14px;border-radius:10px;background:#fff;border:1px solid #e9ecef;cursor:pointer;font-weight:600}.app-nav button.active{background:#667eea;color:#fff;border-color:#667eea}*{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}#root{width:100%;max-width:900px}