body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;background-color:#f0f2f5}.login-container{display:flex;justify-content:center;align-items:center;height:100vh;background-color:#f0f2f5}.login-box{background-color:#fff;padding:2rem;border-radius:8px;box-shadow:0 2px 4px #0000001a;width:100%;max-width:400px}.login-box h2{margin:0 0 1.5rem;text-align:center;color:#1976d2}.login-form{display:flex;flex-direction:column;gap:1rem}.login-input{padding:.75rem;border:1px solid #e0e0e0;border-radius:4px;font-size:1rem}.login-button{padding:.75rem;background-color:#1976d2;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:1rem;transition:background-color .2s}.login-button:hover{background-color:#1565c0}.login-button:disabled{background-color:#ccc;cursor:not-allowed}.login-error{color:#d32f2f;text-align:center;font-size:.875rem}.chat-container{display:flex;height:100vh}.sidebar{width:250px;background-color:#fff;padding:20px;border-right:1px solid #e0e0e0;display:flex;flex-direction:column}.logout-button{margin-top:auto;padding:.75rem;background-color:#d32f2f;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:1rem;transition:background-color .2s}.logout-button:hover{background-color:#b71c1c}.main-content{flex:1;padding:20px;display:flex;flex-direction:column}.chat-messages{flex:1;overflow-y:auto;padding:20px;background-color:#fff;border-radius:8px;margin-bottom:20px}.message{margin-bottom:20px;padding:10px;border-radius:8px}.user-message{background-color:#e3f2fd;margin-left:20%}.bot-message{background-color:#f5f5f5;margin-right:20%}.input-container{display:flex;gap:10px}.message-input{flex:1;padding:12px;border:1px solid #e0e0e0;border-radius:8px;font-size:16px}.send-button{padding:12px 24px;background-color:#1976d2;color:#fff;border:none;border-radius:8px;cursor:pointer}.send-button:hover{background-color:#1565c0}.reset-button{margin-top:10px;padding:.75rem;background-color:#757575;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:1rem;transition:background-color .2s}.reset-button:hover{background-color:#616161}select{width:100%;padding:10px;margin-bottom:20px;border:1px solid #e0e0e0;border-radius:8px;font-size:14px}.loading-dots{display:inline-block;width:60px;text-align:center}.loading-dots span{display:inline-block;width:8px;height:8px;margin:0 2px;background-color:#555;border-radius:50%;animation:loading-dots 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 loading-dots{0%,80%,to{opacity:0}40%{opacity:1}}