: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;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-history{max-width:800px;margin:0 auto;padding:20px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.chat-header{border-bottom:2px solid #e1e5e9;padding-bottom:20px;margin-bottom:20px}.chat-header h2{margin:0 0 10px;color:#2c3e50}.chat-info{display:flex;gap:20px;flex-wrap:wrap;font-size:14px;color:#6c757d}.chat-info span{background:#f8f9fa;padding:4px 8px;border-radius:4px}.messages-container{display:flex;flex-direction:column;gap:15px}.message{padding:15px;border-radius:12px;max-width:80%}.user-message{background:#007bff;color:#fff;align-self:flex-end;margin-left:auto}.bot-message{background:#f8f9fa;color:#495057;align-self:flex-start;border:1px solid #e9ecef}.message-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;font-size:12px}.user-message .message-header{color:#fffc}.bot-message .message-header{color:#6c757d}.sender{font-weight:600;text-transform:capitalize}.timestamp{font-size:11px}.message-content{line-height:1.5;word-wrap:break-word}.no-messages{text-align:center;color:#6c757d;font-style:italic;padding:40px}.chat-history-loading,.chat-history-empty{text-align:center;color:#6c757d;padding:40px}.chat-history-error{text-align:center;color:#dc3545;padding:40px}.chat-history-error button{background:#007bff;color:#fff;border:none;padding:10px 20px;border-radius:5px;cursor:pointer;margin-top:10px}.chat-history-error button:hover{background:#0056b3}.sidebar{width:300px;height:100%;background:#f8f9fa;border-right:1px solid #e1e5e9;display:flex;flex-direction:column;overflow:hidden}.sidebar-header{padding:20px;border-bottom:1px solid #e1e5e9;background:#fff;display:flex;justify-content:space-between;align-items:center}.sidebar-header h2{margin:0;color:#2c3e50;font-size:18px;font-weight:600}.refresh-btn{background:none;border:1px solid #ced4da;border-radius:4px;padding:6px 10px;cursor:pointer;font-size:16px;color:#495057;transition:all .2s}.refresh-btn:hover{background:#e9ecef;border-color:#adb5bd}.chat-list{flex:1;overflow-y:auto;padding:10px 0}.chat-item{padding:12px 20px;border-bottom:1px solid #e9ecef;cursor:pointer;transition:background-color .2s;background:#fff;margin:0 10px 1px;border-radius:6px}.chat-item:hover{background:#f1f3f4}.chat-item.selected{background:#007bff;color:#fff;box-shadow:0 2px 4px #007bff33}.chat-item.selected:hover{background:#0056b3}.chat-item-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}.chat-id{font-weight:600;font-size:14px;color:inherit}.message-count{background:#6c757d;color:#fff;border-radius:12px;padding:2px 8px;font-size:12px;font-weight:500}.chat-item.selected .message-count{background:#ffffff4d}.chat-item-details{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:#6c757d}.chat-item.selected .chat-item-details{color:#fffc}.user-id,.created-date{color:inherit}.sidebar-loading,.sidebar-error{padding:20px;text-align:center;color:#6c757d}.sidebar-error button{margin-top:10px;padding:8px 16px;background:#007bff;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:14px}.sidebar-error button:hover{background:#0056b3}.no-chats{padding:40px 20px;text-align:center;color:#6c757d;font-style:italic}.chat-list::-webkit-scrollbar{width:6px}.chat-list::-webkit-scrollbar-track{background:#f1f1f1}.chat-list::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:3px}.chat-list::-webkit-scrollbar-thumb:hover{background:#a8a8a8}@media (max-width: 768px){.sidebar{width:100%;max-width:none}.chat-item{margin:0 5px 1px;padding:10px 15px}.sidebar-header{padding:15px}}.api-key-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px}.api-key-card{background:#fff;border-radius:12px;padding:40px;box-shadow:0 10px 30px #0000001a;max-width:500px;width:100%}.api-key-card h2{margin:0 0 10px;color:#333;text-align:center;font-size:28px}.api-key-card>p{margin:0 0 30px;color:#666;text-align:center;font-size:16px}.api-key-form{margin-bottom:30px}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:600;color:#333}.form-group input{width:100%;padding:12px 16px;border:2px solid #e1e5e9;border-radius:8px;font-size:16px;transition:border-color .3s ease;box-sizing:border-box}.form-group input:focus{outline:none;border-color:#667eea}.form-group input.error{border-color:#e74c3c}.error-message{color:#e74c3c;font-size:14px;margin-top:5px;display:block}.submit-button{width:100%;padding:14px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease}.submit-button:hover{transform:translateY(-2px);box-shadow:0 5px 15px #667eea66}.submit-button:active{transform:translateY(0)}.api-key-info{border-top:1px solid #e1e5e9;padding-top:20px}.api-key-info h3{margin:0 0 10px;color:#333;font-size:18px}.api-key-info p{margin:0 0 10px;color:#666;font-size:14px;line-height:1.5}.api-key-info code{background:#f8f9fa;padding:2px 6px;border-radius:4px;font-family:Courier New,monospace;color:#e83e8c}#root{min-height:100vh}.app{min-height:100vh;display:flex;flex-direction:column;background:#fff;color:#333}.app-header{background:#f8f9fa;border-bottom:1px solid #e1e5e9;padding:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}.app-header h1{margin:0;color:#2c3e50;font-size:24px}.header-info{display:flex;align-items:center;gap:10px}.header-info span{font-weight:500;color:#495057;background:#e9ecef;padding:6px 12px;border-radius:4px;font-size:14px}.logout-button{background:#dc3545;color:#fff;border:none;padding:8px 12px;border-radius:4px;cursor:pointer;font-size:16px;transition:background-color .2s ease}.logout-button:hover{background:#c82333}.app-main{flex:1;display:flex;overflow:hidden}.content-area{flex:1;display:flex;flex-direction:column;overflow:hidden}.no-chat-selected{flex:1;display:flex;align-items:center;justify-content:center;background:#f8f9fa;color:#6c757d;text-align:center}.no-chat-selected h2{margin:0;font-size:18px;font-weight:400}@media (max-width: 768px){.app-header{flex-direction:column;align-items:stretch;padding:15px}.app-main{flex-direction:column}.header-info span{font-size:12px;padding:4px 8px}.no-chat-selected h2{font-size:16px;padding:0 20px}}