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a{text-decoration:none;color:#fffffff2;display:block;padding:12px 16px;border-radius:8px;font-size:14px;font-weight:500;transition:var(--transition);display:flex;align-items:center;gap:12px;position:relative;overflow:hidden}.sidebar a:after{content:"";position:absolute;left:0;top:0;width:4px;height:100%;background:linear-gradient(180deg,var(--primary-color),var(--secondary-color));transform:scaleY(0);transition:var(--transition)}.sidebar a:hover{background-color:#ffffff26;color:#fff;transform:translate(4px);box-shadow:0 4px 12px #0003}.sidebar a:hover:after{transform:scaleY(1)}.sidebar a.active{background:linear-gradient(90deg,rgba(10,102,194,.3),transparent);color:#fff;font-weight:600;box-shadow:0 4px 12px #0a66c233}.sidebar a.active:after{transform:scaleY(1)}.sidebar a .icon{width:20px;height:20px;background-size:contain;background-repeat:no-repeat;background-position:center}.sidebar a[href="#chat"] .icon{background-image:url('data:image/svg+xml;utf8,<svg 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var(--border-color);font-size:18px;font-weight:600;background-color:#fafafa;display:flex;flex-direction:column}.chat-tabs{display:flex;overflow-x:auto;padding:8px 12px;gap:8px;border-bottom:1px solid var(--border-color)}.chat-tab{display:flex;align-items:center;gap:8px;padding:8px 16px;background-color:#fff;border:1px solid var(--border-color);border-radius:20px;cursor:pointer;font-size:14px;font-weight:500;color:var(--text-secondary);transition:all .3s ease;white-space:nowrap}.chat-tab:hover{background-color:#0066cc0d;color:var(--primary-color);border-color:var(--primary-color)}.chat-tab.active{background-color:var(--primary-color);color:#fff;border-color:var(--primary-color)}.tab-icon{font-size:16px;font-weight:700}.chat-header:before{display:none}.chat-messages{flex:1;padding:30px;overflow-y:auto;background-color:#f9f9f9}.chat-messages::-webkit-scrollbar{width:6px}.chat-messages::-webkit-scrollbar-track{background:#f1f1f1;border-radius:3px}.chat-messages::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:3px}.chat-messages::-webkit-scrollbar-thumb:hover{background:#a8a8a8}.message{margin-bottom:16px;display:flex;width:100%;animation:fadeIn .3s ease;padding:0 16px}.loading-spinner{width:16px;height:16px;border:2px solid #f3f3f3;border-top:2px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite;margin-right:12px;align-self:flex-start;margin-top:6px}@keyframes 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a{color:#fffc;text-decoration:none;font-weight:500;transition:var(--transition)}.message-received .message-content a:hover{color:#fff;text-decoration:underline}.loading-message,.empty-message{display:flex;justify-content:center;align-items:center;height:300px;color:var(--text-secondary);font-size:16px;font-style:italic}.chat-input-container{position:relative;padding:16px 20px;border-top:1px solid var(--border-color);background-color:#fafafa}.chat-input-wrapper{display:flex;align-items:center;gap:8px}.message-time{font-size:11px;color:var(--text-light);margin-top:4px;text-align:right;padding:0 4px}.message-received .message-time{text-align:left}.knowledge-base-container{max-width:1000px;margin:0 auto;background-color:#fff;border-radius:var(--border-radius);box-shadow:var(--shadow-md);padding:30px;transition:var(--transition)}.knowledge-base-container:hover{box-shadow:var(--shadow-lg)}.knowledge-base-container h2{margin-bottom:30px;color:var(--text-primary);font-size:20px;font-weight:600;display:flex;align-items:center;gap:12px}.kb-form{margin-bottom:40px;padding:24px;background-color:#fafafa;border-radius:var(--border-radius);border:1px solid var(--border-color)}.kb-form h3{margin-bottom:20px;color:var(--text-primary);font-size:16px;font-weight:600}.kb-form input,.kb-form textarea{width:100%;margin-bottom:16px;padding:12px 16px;border:1px solid var(--border-color);border-radius:8px;font-size:14px;transition:var(--transition);background-color:#fff}.kb-form input:focus,.kb-form textarea:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 2px #0066cc1a;background-color:#fff}.kb-form textarea{height:120px;resize:vertical;min-height:80px}.kb-form button{padding:10px 24px;background-color:var(--primary-color);color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:14px;font-weight:500;transition:var(--transition);margin-right:12px}.kb-form button:hover{background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:0 2px 8px #0066cc4d}.kb-item{padding:20px;border-bottom:1px solid var(--border-color);transition:var(--transition);border-radius:8px;margin-bottom:12px;background-color:#fafafa}.kb-item:hover{background-color:#0066cc0d;transform:translate(4px)}.kb-item h3{margin-bottom:8px;color:var(--primary-color);font-size:16px;font-weight:600}.kb-item p{color:var(--text-secondary);font-size:14px;line-height:1.6;margin-bottom:12px}.kb-item .actions{display:flex;gap:12px;margin-top:12px;align-items:center}.kb-item .actions span{color:var(--text-light);font-size:12px;background-color:#fff;padding:4px 12px;border-radius:12px;border:1px solid var(--border-color)}.kb-item .actions button{padding:6px 16px;border:none;border-radius:8px;cursor:pointer;font-size:14px;font-weight:500;transition:var(--transition)}.kb-item .actions .edit-btn{background-color:var(--primary-color);color:#fff}.kb-item .actions .edit-btn:hover{background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:0 2px 8px #0066cc4d}.kb-item .actions .delete-btn{background-color:#ff4d4f;color:#fff}.kb-item .actions .delete-btn:hover{background-color:#ff7875;transform:translateY(-1px);box-shadow:0 2px 8px #ff4d4f4d}#profile-page h2{margin-bottom:30px;color:var(--text-primary);font-size:20px;font-weight:600;display:flex;align-items:center;gap:12px}#profile-info{display:flex;flex-direction:column;gap:24px}#profile-info>div{background-color:#fafafa;padding:24px;border-radius:var(--border-radius);border:1px solid var(--border-color);transition:var(--transition)}#profile-info>div:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px)}#profile-info h3{margin-bottom:16px;color:var(--text-primary);font-size:16px;font-weight:600}#profile-info p{margin-bottom:8px;font-size:14px;color:var(--text-secondary)}#profile-info strong{color:var(--text-primary);font-weight:500}#profile-info code{background-color:var(--light-color);padding:2px 6px;border-radius:4px;font-family:Courier New,Courier,monospace;font-size:13px;color:var(--primary-color)}#profile-info pre{background-color:var(--light-color);padding:16px;border-radius:var(--border-radius);overflow-x:auto;font-family:Courier New,Courier,monospace;font-size:13px;line-height:1.5;border:1px solid var(--border-color)}@media (max-width: 1024px){.hero-container{flex-direction:column;text-align:center}.hero-content,.hero-image{flex:none;width:100%}.hero h1{font-size:36px}.contact-container{flex-direction:column}}@media (max-width: 768px){.nav-links,.auth-buttons{display:none}.mobile-menu-btn{display:block}.login-container{margin:80px auto;padding:40px 24px;max-width:90%}.sidebar{width:200px;padding:16px}.content{margin-left:200px;padding:20px}.chat-container{height:500px}.chat-messages{padding:20px}.chat-input{padding:16px 20px}.knowledge-base-container{padding:20px}.section-title h2{font-size:28px}}@media (max-width: 480px){.nav-container{padding:15px 20px}.hero h1{font-size:28px}.hero-buttons{flex-direction:column;align-items:center}.stats{flex-direction:column;gap:20px}.sidebar{width:100%;height:auto;position:relative;top:0;box-shadow:none;border-bottom:1px solid var(--border-color)}.content{margin-left:0;margin-top:0}.sidebar ul{display:flex;overflow-x:auto;gap:8px}.sidebar li{white-space:nowrap;margin-bottom:0}.message{max-width:85%}}.tech-stack-integration{background-color:#fafafa;padding:24px;border-radius:var(--border-radius);border:1px solid var(--border-color);transition:var(--transition);margin-top:24px}.tech-stack-integration:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px)}.tech-stack-integration h3{margin-bottom:16px;color:var(--text-primary);font-size:16px;font-weight:600}.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.tabs button{padding:8px 16px;background-color:#fff;color:var(--text-secondary);border:1px solid var(--border-color);border-radius:20px;cursor:pointer;font-size:14px;font-weight:500;transition:var(--transition)}.tabs button:hover{background-color:#0066cc0d;color:var(--primary-color);border-color:var(--primary-color)}.tabs button.active{background-color:var(--primary-color);color:#fff;border-color:var(--primary-color)}.code-container{background-color:var(--light-color);border-radius:var(--border-radius);padding:16px;overflow-x:auto;max-height:400px;overflow-y:auto;border:1px solid var(--border-color)}.code-container pre{margin:0;font-family:Courier New,Courier,monospace;font-size:13px;line-height:1.5;color:var(--text-primary)}.code-container code{background:none;padding:0;border-radius:0;color:var(--text-primary)}.code-container::-webkit-scrollbar{width:8px;height:8px}.code-container::-webkit-scrollbar-track{background:#f1f1f1;border-radius:4px}.code-container::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:4px}.code-container::-webkit-scrollbar-thumb:hover{background:#a8a8a8}