:root{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;font-weight:400;color:#333;background-color:#f8f9fa;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;min-width:320px;min-height:100vh}#root{width:100%}h1,h2,h3,h4,h5,h6{line-height:1.2;font-weight:600}button{font-family:inherit;cursor:pointer}input,textarea,select{font-family:inherit}:root{--primary-50: #f0f4ff;--primary-100: #e0e7ff;--primary-200: #c7d2fe;--primary-300: #a5b4fc;--primary-400: #818cf8;--primary-500: #6366f1;--primary-600: #4f46e5;--primary-700: #4338ca;--primary-800: #3730a3;--primary-900: #312e81;--accent-50: #faf5ff;--accent-100: #f3e8ff;--accent-200: #e9d5ff;--accent-300: #d8b4fe;--accent-400: #c084fc;--accent-500: #a855f7;--accent-600: #9333ea;--accent-700: #7e22ce;--accent-800: #6b21a8;--accent-900: #581c87;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-400: #9ca3af;--gray-500: #6b7280;--gray-600: #4b5563;--gray-700: #374151;--gray-800: #1f2937;--gray-900: #111827;--success-50: #ecfdf5;--success-500: #10b981;--success-600: #059669;--success-700: #047857;--warning-50: #fffbeb;--warning-500: #f59e0b;--warning-600: #d97706;--error-50: #fef2f2;--error-500: #ef4444;--error-600: #dc2626;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--spacing-3xl: 4rem;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", sans-serif;--font-serif: "Georgia", "Cambria", "Times New Roman", serif;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow: 0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px 0 rgba(0, 0, 0, .06);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--radius-sm: .25rem;--radius: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition: .3s cubic-bezier(.4, 0, .2, 1);--transition-slow: .5s cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-sans);color:var(--gray-900);background:var(--gray-50);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.gradient-bg{background:linear-gradient(135deg,var(--primary-600) 0%,var(--accent-600) 100%)}.gradient-text{background:linear-gradient(135deg,var(--primary-600) 0%,var(--accent-600) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.card{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden;transition:all var(--transition)}.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-xl);font-size:.875rem;font-weight:600;border-radius:var(--radius);border:none;cursor:pointer;transition:all var(--transition-fast);text-decoration:none;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,var(--primary-600) 0%,var(--accent-600) 100%);color:#fff}.btn-primary:hover{opacity:.9;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--gray-100);color:var(--gray-700)}.btn-secondary:hover{background:var(--gray-200)}.btn-outline{background:transparent;border:2px solid var(--primary-600);color:var(--primary-600)}.btn-outline:hover{background:var(--primary-600);color:#fff}.btn-icon{width:2.5rem;height:2.5rem;padding:0;border-radius:var(--radius-full)}.badge{display:inline-flex;align-items:center;padding:var(--spacing-xs) var(--spacing-sm);font-size:.75rem;font-weight:600;border-radius:var(--radius)}.badge-primary{background:var(--primary-100);color:var(--primary-700)}.badge-success{background:var(--success-50);color:var(--success-700)}.badge-warning{background:var(--warning-50);color:var(--warning-600)}.input{width:100%;padding:var(--spacing-md);font-size:.875rem;border:2px solid var(--gray-200);border-radius:var(--radius);background:#fff;transition:all var(--transition-fast)}.input:focus{outline:none;border-color:var(--primary-500);box-shadow:0 0 0 3px var(--primary-100)}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg)}.section{padding:var(--spacing-3xl) 0}@media(max-width:768px){.container{padding:0 var(--spacing-md)}.section{padding:var(--spacing-xl) 0}}.navbar{background:#fff;box-shadow:var(--shadow);position:sticky;top:0;z-index:100;border-bottom:1px solid var(--gray-200)}.navbar-container{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md) var(--spacing-lg)}.navbar-logo{font-size:1.5rem;font-weight:800;text-decoration:none;display:flex;align-items:center;gap:var(--spacing-sm)}.navbar-menu{display:flex;align-items:center;gap:var(--spacing-md)}.nav-link{padding:var(--spacing-sm) var(--spacing-md);font-weight:600;color:var(--gray-700);text-decoration:none;border-radius:var(--radius);transition:all var(--transition-fast);white-space:nowrap}.nav-link:hover{background:var(--gray-100);color:var(--primary-600)}.nav-link.active{background:var(--primary-50);color:var(--primary-700)}.admin-link{background:linear-gradient(135deg,var(--primary-600) 0%,var(--accent-600) 100%);color:#fff!important}.admin-link:hover{opacity:.9}.navbar-divider{width:1px;height:24px;background:var(--gray-300)}.user-menu{position:relative}.user-menu-button{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-xs) var(--spacing-md);background:var(--gray-100);border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);text-decoration:none;color:var(--gray-900)}.user-menu-button:hover{background:var(--gray-200)}.user-avatar{width:32px;height:32px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--primary-600) 0%,var(--accent-600) 100%);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700}.user-name{font-weight:600;font-size:.875rem}.user-dropdown{position:absolute;top:calc(100% + var(--spacing-sm));right:0;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);min-width:180px;overflow:hidden;opacity:0;visibility:hidden;transform:translateY(-10px);transition:all var(--transition-fast)}.user-menu:hover .user-dropdown{opacity:1;visibility:visible;transform:translateY(0)}.dropdown-item{display:block;width:100%;padding:var(--spacing-md) var(--spacing-lg);text-align:left;background:none;border:none;color:var(--gray-700);font-size:.875rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);text-decoration:none}.dropdown-item:hover{background:var(--gray-100);color:var(--primary-600)}.auth-buttons{display:flex;gap:var(--spacing-sm)}.mobile-menu-btn{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--gray-700)}@media(max-width:768px){.mobile-menu-btn{display:block}.navbar-menu{position:fixed;top:61px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:var(--spacing-lg);box-shadow:var(--shadow-lg);gap:var(--spacing-sm);transform:translateY(-100%);opacity:0;visibility:hidden;transition:all var(--transition)}.navbar-menu.open{transform:translateY(0);opacity:1;visibility:visible}.nav-link{width:100%;padding:var(--spacing-md)}.navbar-divider{width:100%;height:1px;margin:var(--spacing-sm) 0}.user-menu{width:100%}.user-menu-button{width:100%;justify-content:flex-start}.user-dropdown{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border-top:1px solid var(--gray-200);margin-top:var(--spacing-sm)}.auth-buttons{width:100%;flex-direction:column}.auth-buttons .btn{width:100%}}.admin-layout{display:flex;min-height:100vh;background:#f5f7fa}.admin-sidebar{width:260px;background:#1e293b;color:#fff;display:flex;flex-direction:column;position:fixed;height:100vh;left:0;top:0}.sidebar-header{padding:24px 20px;border-bottom:1px solid rgba(255,255,255,.1);text-align:center}.sidebar-logo{font-size:2.5rem;margin-bottom:8px}.sidebar-header h2{margin:0;font-size:1.25rem;font-weight:600}.sidebar-nav{flex:1;padding:20px 12px;overflow-y:auto}.nav-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:8px;color:#ffffffb3;text-decoration:none;transition:all .2s;margin-bottom:4px;font-size:.9rem}.nav-item:hover{background:#ffffff1a;color:#fff}.nav-item.active{background:#667eea;color:#fff}.nav-icon{font-size:1.25rem;width:24px;text-align:center}.nav-label{font-weight:500}.sidebar-footer{padding:16px;border-top:1px solid rgba(255,255,255,.1)}.user-info{display:flex;align-items:center;gap:12px;margin-bottom:12px}.user-avatar{width:40px;height:40px;border-radius:50%;background:#667eea;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.9rem}.user-details{flex:1;min-width:0}.user-name{font-size:.875rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-role{font-size:.75rem;color:#fff9;text-transform:uppercase;letter-spacing:.5px}.logout-btn{width:100%;padding:10px;background:#ffffff1a;border:none;color:#fff;border-radius:6px;cursor:pointer;font-size:.875rem;font-weight:500;transition:background .2s}.logout-btn:hover{background:#fff3}.admin-content{flex:1;margin-left:260px;padding:24px}.content-wrapper{max-width:1400px;margin:0 auto}@media(max-width:768px){.admin-sidebar{width:70px}.sidebar-header h2,.nav-label,.user-details{display:none}.nav-item{justify-content:center;padding:12px}.admin-content{margin-left:70px}}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px}.auth-card{background:#fff;border-radius:12px;padding:40px;width:100%;max-width:450px;box-shadow:0 10px 40px #0003}.auth-header{text-align:center;margin-bottom:30px}.auth-logo{font-size:3rem;margin-bottom:15px}.auth-header h1{font-size:1.75rem;margin:0 0 8px;color:#333}.auth-header p{color:#666;margin:0;font-size:.95rem}.auth-error{background:#fee;color:#c33;padding:12px;border-radius:6px;margin-bottom:20px;font-size:.9rem;text-align:center}.auth-form{display:flex;flex-direction:column;gap:18px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.form-field{display:flex;flex-direction:column;gap:6px}.form-field label{font-size:.875rem;font-weight:600;color:#333}.form-field input,.form-field select{padding:10px 12px;border:1.5px solid #e0e0e0;border-radius:6px;font-size:.9rem;transition:all .2s}.form-field input:focus,.form-field select:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.form-field small{font-size:.75rem;color:#999}.auth-btn{background:#667eea;color:#fff;border:none;padding:12px;border-radius:6px;font-size:.95rem;font-weight:600;cursor:pointer;transition:background .2s;margin-top:10px}.auth-btn:hover:not(:disabled){background:#5568d3}.auth-btn:disabled{opacity:.6;cursor:not-allowed}.auth-footer{text-align:center;margin-top:25px;padding-top:25px;border-top:1px solid #f0f0f0}.auth-footer p{margin:0;color:#666;font-size:.9rem}.auth-footer a{color:#667eea;font-weight:600;text-decoration:none}.auth-footer a:hover{text-decoration:underline}@media(max-width:600px){.auth-card{padding:30px 20px}.form-row{grid-template-columns:1fr}}.profile-container{min-height:100vh;background:var(--gray-50)}.profile-header{padding:var(--spacing-3xl) 0 var(--spacing-2xl);color:#fff}.profile-header-content{display:flex;align-items:center;gap:var(--spacing-xl)}.profile-avatar{width:120px;height:120px;border-radius:var(--radius-full);background:#fff3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:4px solid white;display:flex;align-items:center;justify-content:center;font-size:2.5rem;font-weight:700;flex-shrink:0}.profile-info h1{margin:0 0 var(--spacing-sm);font-size:2rem}.profile-info p{margin:0 0 var(--spacing-md);opacity:.9}.profile-badges{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.profile-tabs{display:flex;gap:var(--spacing-sm);margin-bottom:var(--spacing-xl);border-bottom:2px solid var(--gray-200);overflow-x:auto}.profile-tabs .tab{padding:var(--spacing-md) var(--spacing-xl);background:none;border:none;border-bottom:3px solid transparent;font-size:1rem;font-weight:600;color:var(--gray-600);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.profile-tabs .tab:hover{color:var(--primary-600)}.profile-tabs .tab.active{color:var(--primary-600);border-bottom-color:var(--primary-600)}.tab-content{animation:fadeIn .3s ease-in}.loading-state,.empty-state{text-align:center;padding:var(--spacing-3xl);background:#fff;border-radius:var(--radius-lg)}.spinner{width:40px;height:40px;border:4px solid var(--gray-200);border-top-color:var(--primary-600);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto var(--spacing-lg)}@keyframes spin{to{transform:rotate(360deg)}}.bookmarks-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--spacing-xl)}.bookmark-card{display:flex;flex-direction:column;overflow:hidden}.bookmark-image{width:100%;height:200px;object-fit:cover}.bookmark-content{padding:var(--spacing-lg);flex:1;display:flex;flex-direction:column}.bookmark-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-md)}.bookmark-card h3{margin:0 0 var(--spacing-md);font-size:1.25rem;color:var(--gray-900);line-height:1.4}.bookmark-summary{flex:1;color:var(--gray-600);font-size:.875rem;line-height:1.6;margin-bottom:var(--spacing-lg);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.settings-section{padding:var(--spacing-xl) 0;border-bottom:1px solid var(--gray-200)}.settings-section:last-child{border-bottom:none}.settings-section h3{margin:0 0 var(--spacing-lg);color:var(--gray-900)}.info-row{display:flex;justify-content:space-between;padding:var(--spacing-md) 0;border-bottom:1px solid var(--gray-100)}.info-row:last-child{border-bottom:none}.info-label{font-weight:600;color:var(--gray-700)}.info-value{color:var(--gray-600)}@media(max-width:768px){.profile-header-content{flex-direction:column;text-align:center}.profile-info h1{font-size:1.5rem}.bookmarks-grid{grid-template-columns:1fr}.info-row{flex-direction:column;gap:var(--spacing-xs)}}.chat-container{display:flex;height:calc(100vh - 65px);background:var(--gray-50);overflow:hidden}.chat-auth-required{flex:1;display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl)}.auth-prompt{text-align:center;max-width:500px}.auth-prompt h1{font-size:2rem;margin:0 0 var(--spacing-md) 0;background:linear-gradient(135deg,var(--primary-600) 0%,var(--accent-600) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.auth-prompt p{font-size:1.125rem;color:var(--gray-600);margin:0 0 var(--spacing-xl) 0}.auth-prompt .auth-buttons{display:flex;gap:var(--spacing-md);justify-content:center}.chat-sidebar{width:280px;background:#fff;border-right:1px solid var(--gray-200);display:flex;flex-direction:column;transition:transform var(--transition);position:relative;z-index:10}.sidebar-header{padding:var(--spacing-lg);border-bottom:1px solid var(--gray-200)}.sidebar-header h2{font-size:1.25rem;margin:0 0 var(--spacing-md) 0;background:linear-gradient(135deg,var(--primary-600) 0%,var(--accent-600) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.btn-new-chat{width:100%;padding:var(--spacing-md);background:linear-gradient(135deg,var(--primary-600) 0%,var(--accent-600) 100%);color:#fff;border:none;border-radius:var(--radius);font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.btn-new-chat:hover{transform:translateY(-1px);box-shadow:var(--shadow)}.conversation-list{flex:1;overflow-y:auto;padding:var(--spacing-sm)}.empty-conversations{padding:var(--spacing-xl);text-align:center;color:var(--gray-500)}.empty-conversations p{margin:0 0 var(--spacing-xs) 0;font-weight:500}.empty-conversations small{font-size:.875rem;color:var(--gray-400)}.conversation-item{padding:var(--spacing-md);margin-bottom:var(--spacing-sm);border-radius:var(--radius);cursor:pointer;transition:all var(--transition-fast);display:flex;align-items:center;gap:var(--spacing-sm);position:relative}.conversation-item:hover{background:var(--gray-100)}.conversation-item.active{background:var(--primary-50);border-left:3px solid var(--primary-600)}.conversation-content{flex:1;min-width:0}.conversation-content h4{margin:0 0 var(--spacing-xs) 0;font-size:.875rem;font-weight:600;color:var(--gray-900);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conversation-content p{margin:0 0 var(--spacing-xs) 0;font-size:.75rem;color:var(--gray-600);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conversation-content small{font-size:.7rem;color:var(--gray-400)}.btn-delete-conv{background:none;border:none;cursor:pointer;padding:var(--spacing-xs);opacity:0;transition:opacity var(--transition-fast);font-size:1rem}.conversation-item:hover .btn-delete-conv{opacity:1}.btn-delete-conv:hover{transform:scale(1.2)}.sidebar-toggle{position:absolute;right:-12px;top:50%;transform:translateY(-50%);background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-full);width:24px;height:24px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:.75rem;box-shadow:var(--shadow)}.chat-main{flex:1;display:flex;flex-direction:column;background:#fff}.chat-welcome{flex:1;display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl)}.welcome-content{max-width:700px;text-align:center}.welcome-content h1{font-size:2.5rem;margin:0 0 var(--spacing-md) 0;background:linear-gradient(135deg,var(--primary-600) 0%,var(--accent-600) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.welcome-content>p{font-size:1.125rem;color:var(--gray-600);margin:0 0 var(--spacing-xl) 0}.welcome-examples{margin-top:var(--spacing-xl)}.welcome-examples h3{font-size:1rem;color:var(--gray-700);margin:0 0 var(--spacing-md) 0}.example-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-md)}.example-card{padding:var(--spacing-lg);background:var(--gray-50);border:1px solid var(--gray-200);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);font-size:.875rem;color:var(--gray-700)}.example-card:hover{background:var(--primary-50);border-color:var(--primary-300);transform:translateY(-2px);box-shadow:var(--shadow)}.chat-messages{flex:1;overflow-y:auto;padding:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-lg)}.message{display:flex;gap:var(--spacing-md);animation:fadeIn .3s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message-avatar{width:36px;height:36px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.875rem;flex-shrink:0}.user-message .message-avatar{background:linear-gradient(135deg,var(--primary-600) 0%,var(--accent-600) 100%);color:#fff}.ai-message .message-avatar{background:var(--gray-100);font-size:1.25rem}.message-content{flex:1;min-width:0}.message-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-xs)}.message-header strong{font-size:.875rem;color:var(--gray-900)}.message-header small{font-size:.75rem;color:var(--gray-400)}.message-content p{margin:0;line-height:1.6;color:var(--gray-800);white-space:pre-wrap;word-wrap:break-word}.user-message .message-content p{color:var(--gray-900);font-weight:500}.typing-indicator{display:flex;gap:4px;padding:var(--spacing-sm) 0}.typing-indicator span{width:8px;height:8px;background:var(--gray-400);border-radius:50%;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)}30%{transform:translateY(-10px)}}.chat-input-container{border-top:1px solid var(--gray-200);padding:var(--spacing-lg);background:#fff}.chat-error{margin-bottom:var(--spacing-md);padding:var(--spacing-md);background:var(--error-50);color:var(--error-700);border-radius:var(--radius);font-size:.875rem}.chat-input-form{display:flex;gap:var(--spacing-md);align-items:flex-end}.chat-input{flex:1;padding:var(--spacing-md);border:1px solid var(--gray-300);border-radius:var(--radius-lg);font-size:1rem;font-family:inherit;resize:none;max-height:150px;transition:all var(--transition-fast)}.chat-input:focus{outline:none;border-color:var(--primary-500);box-shadow:0 0 0 3px var(--primary-100)}.chat-input:disabled{background:var(--gray-100);cursor:not-allowed}.btn-send{width:44px;height:44px;background:linear-gradient(135deg,var(--primary-600) 0%,var(--accent-600) 100%);color:#fff;border:none;border-radius:var(--radius-full);cursor:pointer;font-size:1.25rem;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);flex-shrink:0}.btn-send:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow)}.btn-send:disabled{opacity:.5;cursor:not-allowed}.chat-disclaimer{margin:var(--spacing-md) 0 0 0;font-size:.75rem;color:var(--gray-500);text-align:center}@media(max-width:768px){.chat-container{height:calc(100vh - 61px)}.chat-sidebar{position:fixed;left:0;top:61px;bottom:0;transform:translate(-100%);z-index:100;box-shadow:var(--shadow-lg)}.chat-sidebar.open{transform:translate(0)}.sidebar-toggle{right:-40px;width:32px;height:32px}.welcome-content h1{font-size:1.75rem}.example-cards{grid-template-columns:1fr}.chat-messages{padding:var(--spacing-md)}.message-avatar{width:32px;height:32px;font-size:.75rem}.chat-input-container{padding:var(--spacing-md)}}.blog-list-container{min-height:100vh;background:var(--gray-50)}.blog-hero{padding:var(--spacing-3xl) 0;color:#fff;text-align:center}.blog-hero-title{font-size:3rem;font-weight:800;margin:0 0 var(--spacing-md);text-shadow:0 2px 4px rgba(0,0,0,.1)}.blog-hero-subtitle{font-size:1.25rem;opacity:.95;max-width:600px;margin:0 auto}.filter-bar{background:#fff;padding:var(--spacing-xl);border-radius:var(--radius-lg);box-shadow:var(--shadow);margin:calc(var(--spacing-xl) * -1) 0 var(--spacing-xl);position:relative;z-index:10}.search-box{position:relative;margin-bottom:var(--spacing-lg)}.search-icon{position:absolute;left:var(--spacing-md);top:50%;transform:translateY(-50%);font-size:1.25rem}.search-box .input{padding-left:3rem;font-size:1rem}.category-filters{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.filter-chip{padding:var(--spacing-sm) var(--spacing-lg);background:var(--gray-100);border:2px solid transparent;border-radius:var(--radius-full);font-size:.875rem;font-weight:600;color:var(--gray-700);cursor:pointer;transition:all var(--transition-fast)}.filter-chip:hover{background:var(--gray-200)}.filter-chip.active{background:var(--primary-50);border-color:var(--primary-600);color:var(--primary-700)}.results-info{margin-bottom:var(--spacing-lg);color:var(--gray-600);font-size:.875rem}.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:var(--spacing-xl);margin-bottom:var(--spacing-3xl)}.blog-card{display:flex;flex-direction:column;height:100%}.blog-card-image{position:relative;width:100%;height:240px;overflow:hidden;background:var(--gray-200)}.blog-card-image img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition)}.blog-card:hover .blog-card-image img{transform:scale(1.05)}.bookmark-btn{position:absolute;top:var(--spacing-md);right:var(--spacing-md);width:2.5rem;height:2.5rem;border-radius:var(--radius-full);background:#fff;border:none;font-size:1.25rem;cursor:pointer;box-shadow:var(--shadow-md);transition:all var(--transition-fast);display:flex;align-items:center;justify-content:center}.bookmark-btn:hover{transform:scale(1.1);box-shadow:var(--shadow-lg)}.bookmark-btn.bookmarked{background:var(--accent-500)}.blog-card-content{padding:var(--spacing-xl);display:flex;flex-direction:column;flex:1}.blog-card-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-md)}.blog-card-date{font-size:.75rem;color:var(--gray-500);font-weight:600}.blog-card-title{margin:0 0 var(--spacing-md);font-size:1.5rem;line-height:1.3}.blog-card-title a{color:var(--gray-900);text-decoration:none;transition:color var(--transition-fast)}.blog-card-title a:hover{color:var(--primary-600)}.blog-card-summary{flex:1;color:var(--gray-600);line-height:1.6;margin-bottom:var(--spacing-lg);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.blog-card-footer{margin-top:auto}.empty-state,.loading-state{text-align:center;padding:var(--spacing-3xl);background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow)}.empty-icon{font-size:4rem;margin-bottom:var(--spacing-lg)}.empty-state h3{margin:0 0 var(--spacing-md);color:var(--gray-900)}.empty-state p{color:var(--gray-600);margin-bottom:var(--spacing-xl)}.pagination{display:flex;align-items:center;justify-content:center;gap:var(--spacing-lg);margin-top:var(--spacing-2xl);padding:var(--spacing-xl)}.pagination-info{font-size:.875rem;color:var(--gray-600);font-weight:500}.pagination .btn{min-width:120px}.pagination .btn:disabled{opacity:.5;cursor:not-allowed}@media(max-width:768px){.blog-hero-title{font-size:2rem}.blog-hero-subtitle{font-size:1rem}.blog-grid{grid-template-columns:1fr}.filter-bar{padding:var(--spacing-md)}}.blog-post-container{min-height:100vh;background:var(--gray-50);padding:var(--spacing-xl) 0}.blog-post{max-width:800px;margin:0 auto;padding:0 var(--spacing-lg)}.post-header{margin-bottom:var(--spacing-2xl)}.back-link{display:inline-flex;align-items:center;color:var(--primary-600);text-decoration:none;font-weight:600;margin-bottom:var(--spacing-lg);transition:color var(--transition-fast)}.back-link:hover{color:var(--primary-700)}.post-meta{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-lg)}.post-date{color:var(--gray-600);font-size:.875rem;font-weight:500}.post-title{font-size:2.5rem;font-weight:800;line-height:1.2;color:var(--gray-900);margin:0 0 var(--spacing-lg)}.post-summary{font-size:1.25rem;color:var(--gray-600);line-height:1.6;margin-bottom:var(--spacing-xl)}.post-actions-bar{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-lg);background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow);margin-bottom:var(--spacing-xl)}.post-stats{display:flex;gap:var(--spacing-lg);color:var(--gray-600);font-size:.875rem}.post-actions{display:flex;gap:var(--spacing-sm)}.post-featured-image{width:100%;height:400px;margin-bottom:var(--spacing-2xl);border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-lg)}.post-content{background:#fff;padding:var(--spacing-2xl);border-radius:var(--radius-lg);box-shadow:var(--shadow);margin-bottom:var(--spacing-xl)}.post-body{font-size:1.125rem;line-height:1.8;color:var(--gray-800)}.post-body h2{font-size:1.75rem;font-weight:700;margin:var(--spacing-xl) 0 var(--spacing-md);color:var(--gray-900)}.post-body h3{font-size:1.5rem;font-weight:600;margin:var(--spacing-lg) 0 var(--spacing-md);color:var(--gray-900)}.post-body p{margin-bottom:var(--spacing-lg)}.post-body ul,.post-body ol{margin-bottom:var(--spacing-lg);padding-left:var(--spacing-xl)}.post-body li{margin-bottom:var(--spacing-sm)}.post-body a{color:var(--primary-600);text-decoration:underline}.post-body a:hover{color:var(--primary-700)}.post-tags{display:flex;flex-wrap:wrap;gap:var(--spacing-sm);margin-bottom:var(--spacing-xl)}.tag{display:inline-flex;align-items:center;padding:var(--spacing-xs) var(--spacing-md);background:var(--primary-50);color:var(--primary-700);font-size:.875rem;font-weight:600;border-radius:var(--radius-full)}.post-footer{background:#fff;padding:var(--spacing-2xl);border-radius:var(--radius-lg);box-shadow:var(--shadow)}.post-footer-content{text-align:center}.post-footer-content h3{margin:0 0 var(--spacing-sm);color:var(--gray-900)}.post-footer-content p{color:var(--gray-600);margin-bottom:var(--spacing-xl)}.post-footer-actions{display:flex;gap:var(--spacing-md);justify-content:center;flex-wrap:wrap}.error-state{text-align:center;padding:var(--spacing-3xl);background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow)}.error-icon{font-size:4rem;margin-bottom:var(--spacing-lg)}.error-state h2{margin:0 0 var(--spacing-md);color:var(--gray-900)}.error-state p{color:var(--gray-600);margin-bottom:var(--spacing-xl)}@media(max-width:768px){.post-title{font-size:1.75rem}.post-summary{font-size:1rem}.post-featured-image{height:250px}.post-actions-bar{flex-direction:column;gap:var(--spacing-md);align-items:stretch}.post-actions{width:100%;justify-content:center}.post-content{padding:var(--spacing-lg)}.post-body{font-size:1rem}.post-footer-actions{flex-direction:column}}.blog-container,.blog-post-container,.admin-container,.container{max-width:1200px;margin:0 auto;padding:20px}.blog-header{text-align:center;margin-bottom:40px;padding:40px 20px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:12px}.blog-header h1{margin:0 0 10px;font-size:2.5rem}.blog-subtitle{font-size:1.1rem;opacity:.95;margin:0}.blog-filters{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px;flex-wrap:wrap;gap:15px}.filter-group{display:flex;gap:10px}.filter-btn{padding:10px 20px;border:2px solid #e0e0e0;background:#fff;border-radius:25px;cursor:pointer;transition:all .3s ease;font-size:14px;font-weight:500}.filter-btn:hover{border-color:#667eea;color:#667eea}.filter-btn.active{background:#667eea;color:#fff;border-color:#667eea}.category-select{padding:10px 20px;border:2px solid #e0e0e0;border-radius:25px;font-size:14px;cursor:pointer;background:#fff}.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:30px;margin-bottom:40px}.blog-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 8px #0000001a;transition:transform .3s ease,box-shadow .3s ease}.blog-card:hover{transform:translateY(-5px);box-shadow:0 8px 20px #00000026}.blog-image{width:100%;height:200px;overflow:hidden;background:#f0f0f0}.blog-image img{width:100%;height:100%;object-fit:cover}.blog-content{padding:20px}.blog-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}.category-badge{background:#667eea;color:#fff;padding:4px 12px;border-radius:12px;font-size:12px;font-weight:600}.draft-badge{background:#ffa726;color:#fff;padding:4px 12px;border-radius:12px;font-size:12px;font-weight:600}.view-count{color:#999;font-size:13px}.blog-title{margin:0 0 12px;font-size:1.4rem;line-height:1.3}.blog-title a{color:#333;text-decoration:none;transition:color .3s ease}.blog-title a:hover{color:#667eea}.blog-summary{color:#666;line-height:1.6;margin-bottom:16px}.blog-footer{display:flex;justify-content:space-between;align-items:center;padding-top:12px;border-top:1px solid #f0f0f0}.blog-date{color:#999;font-size:13px}.read-more{color:#667eea;font-weight:600;text-decoration:none;transition:color .3s ease}.read-more:hover{color:#764ba2}.post-header{margin-bottom:40px}.back-link{color:#667eea;text-decoration:none;font-weight:500;margin-bottom:20px;display:inline-block}.back-link:hover{color:#764ba2}.post-meta-top{margin:20px 0;display:flex;gap:10px}.post-title{font-size:2.5rem;margin:20px 0;line-height:1.2;color:#333}.post-info{display:flex;gap:20px;align-items:center;color:#666;margin-top:15px;flex-wrap:wrap}.post-date,.post-stats{font-size:14px}.post-tags{display:flex;gap:8px;flex-wrap:wrap}.tag{background:#f0f0f0;padding:4px 10px;border-radius:12px;font-size:12px;color:#666}.post-featured-image{width:100%;max-height:500px;overflow:hidden;border-radius:12px;margin-bottom:40px}.post-featured-image img{width:100%;height:100%;object-fit:cover}.post-content{max-width:800px;margin:0 auto}.post-summary{background:#f8f9fa;padding:20px;border-left:4px solid #667eea;margin-bottom:30px;border-radius:4px}.post-body{line-height:1.8;font-size:1.1rem;color:#333}.post-footer{margin-top:60px;padding-top:40px;border-top:2px solid #f0f0f0}.post-actions{display:flex;gap:15px}.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px;flex-wrap:wrap;gap:20px}.admin-header h1{margin:0;font-size:2rem;color:#333}.admin-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:40px}.stat-card{background:#fff;padding:25px;border-radius:12px;box-shadow:0 2px 8px #0000001a;text-align:center}.stat-card h3{margin:0;font-size:2.5rem;color:#667eea}.stat-card p{margin:10px 0 0;color:#666;font-size:14px;text-transform:uppercase;letter-spacing:.5px}.admin-table-container{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 8px #0000001a}.admin-table{width:100%;border-collapse:collapse}.admin-table th{background:#f8f9fa;padding:15px;text-align:left;font-weight:600;color:#333;border-bottom:2px solid #e0e0e0}.admin-table td{padding:15px;border-bottom:1px solid #f0f0f0}.post-title-link{color:#333;text-decoration:none;font-weight:500}.post-title-link:hover{color:#667eea}.status-badge{padding:4px 12px;border-radius:12px;font-size:12px;font-weight:600}.status-badge.published{background:#4caf50;color:#fff}.status-badge.draft{background:#ffa726;color:#fff}.action-buttons{display:flex;gap:8px;flex-wrap:wrap}.btn,.btn-small{padding:10px 20px;border:none;border-radius:6px;cursor:pointer;font-size:14px;font-weight:500;transition:all .3s ease;text-decoration:none;display:inline-block}.btn-small{padding:6px 12px;font-size:13px}.btn-primary{background:#667eea;color:#fff}.btn-secondary{background:#6c757d;color:#fff}.btn-secondary:hover{background:#5a6268}.btn-edit{background:#2196f3;color:#fff}.btn-edit:hover{background:#1976d2}.btn-publish{background:#4caf50;color:#fff}.btn-publish:hover{background:#45a049}.btn-delete{background:#f44336;color:#fff}.btn-delete:hover,.btn-delete.confirm{background:#d32f2f}.btn-cancel{background:#9e9e9e;color:#fff}.btn-cancel:hover{background:#757575}.blog-form{background:#fff;padding:30px;border-radius:12px;box-shadow:0 2px 8px #0000001a}.form-group{margin-bottom:25px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}.form-group label{display:block;margin-bottom:8px;font-weight:600;color:#333}.form-input,.form-textarea{width:100%;padding:12px;border:2px solid #e0e0e0;border-radius:6px;font-size:14px;font-family:inherit;transition:border-color .3s ease}.form-input:focus,.form-textarea:focus{outline:none;border-color:#667eea}.form-textarea{resize:vertical;min-height:120px}.form-help{display:block;margin-top:6px;font-size:12px;color:#999}.form-actions{display:flex;gap:15px;margin-top:30px}.loading,.error,.no-posts{text-align:center;padding:60px 20px;color:#666}.error{color:#f44336}.public-blog-page{min-height:100vh;background:#f8f9fa;display:flex;flex-direction:column}.public-blog-header{background:#fff;border-bottom:1px solid #e9ecef;padding:0;position:sticky;top:0;z-index:100;box-shadow:0 2px 4px #0000000a}.header-content{max-width:1200px;margin:0 auto;padding:16px 24px;display:flex;justify-content:space-between;align-items:center}.logo-section{display:flex;align-items:center;gap:12px}.logo-icon{font-size:2rem}.logo-section h1{margin:0;font-size:1.4rem;color:#1e293b}.header-nav{display:flex;align-items:center;gap:20px}.nav-link{color:#64748b;text-decoration:none;font-size:.9rem;font-weight:500;transition:color .2s;padding:8px 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.2s}.tab:hover{border-color:#667eea;color:#667eea}.tab.active{background:#667eea;border-color:#667eea;color:#fff}.posts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:24px}.post-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 1px 3px #0000001a;transition:all .3s;border:1px solid #e2e8f0}.post-card:hover{transform:translateY(-4px);box-shadow:0 8px 16px #0000001f;border-color:#667eea}.post-image{width:100%;height:180px;overflow:hidden;background:linear-gradient(135deg,#667eea,#764ba2)}.post-image img{width:100%;height:100%;object-fit:cover}.post-body{padding:20px}.post-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-size:.75rem}.category{background:#eef2ff;color:#667eea;padding:4px 10px;border-radius:4px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.date{color:#94a3b8}.post-title{margin:0 0 12px;font-size:1.125rem;line-height:1.4;font-weight:600}.post-title a{color:#1e293b;text-decoration:none;transition:color .2s}.post-title a:hover{color:#667eea}.post-excerpt{color:#64748b;line-height:1.6;font-size:.875rem;margin-bottom:16px}.read-more{color:#667eea;font-weight:600;text-decoration:none;font-size:.875rem;transition:color .2s}.read-more:hover{color:#5568d3}.loading-state,.error-state,.empty-state{text-align:center;padding:80px 20px;color:#64748b}.error-state{color:#ef4444}.public-blog-footer{background:#fff;border-top:1px solid #e9ecef;padding:24px;text-align:center;margin-top:auto}.public-blog-footer p{margin:0;color:#94a3b8;font-size:.875rem}.admin-page-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:24px}.admin-page-header h1{margin:0 0 4px;font-size:1.5rem;color:#1e293b;font-weight:600}.page-subtitle{margin:0;color:#64748b;font-size:.875rem}.btn-new{padding:10px 18px;background:#667eea;color:#fff;border:none;border-radius:8px;font-size:.875rem;font-weight:600;cursor:pointer;text-decoration:none;transition:background .2s;display:inline-flex;align-items:center;gap:6px}.btn-new:hover{background:#5568d3}.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}.stat-box{background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:20px;text-align:center}.stat-value{font-size:2rem;font-weight:700;color:#667eea;margin-bottom:4px}.stat-label{font-size:.75rem;color:#94a3b8;text-transform:uppercase;letter-spacing:.5px;font-weight:600}.data-table-container{background:#fff;border:1px solid #e2e8f0;border-radius:8px;overflow:hidden}.data-table{width:100%;border-collapse:collapse}.data-table thead{background:#f8fafc;border-bottom:1px solid #e2e8f0}.data-table th{padding:12px 16px;text-align:left;font-size:.75rem;font-weight:600;color:#64748b;text-transform:uppercase;letter-spacing:.5px}.data-table 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