.catalog-header {
            background: linear-gradient(135deg, hsl(220 40% 5%), hsl(200 70% 10%));
            padding: 80px 0;
            text-align: center;
            border-bottom: 1px solid hsl(200 30% 18%);
        }
        
        .catalog-header h1 {
            font-size: 3rem;
            color: white;
            margin-bottom: 15px;
        }
        
        .catalog-header p {
            color: hsl(200 20% 70%);
            font-size: 1.2rem;
            max-width: 600px;
            margin: 0 auto;
        }
        
        .catalog-container {
            display: flex;
            gap: 40px;
            max-width: 1400px;
            margin: 0 auto;
            padding: 40px 20px;
        }
        
        .catalog-sidebar {
            flex: 0 0 280px;
            background: hsl(220 35% 8%);
            border-radius: 16px;
            padding: 25px;
            border: 1px solid hsl(200 30% 18%);
            height: fit-content;
            position: sticky;
            top: 20px;
        }
        
        .sidebar-title {
            color: white;
            font-size: 1.4rem;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 2px solid hsl(195 100% 50%);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .sidebar-title::before {
            content: '';
            font-size: 1.2rem;
        }
        
        .filter-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        
        .filter-item {
            display: block;
            width: 100%;
            padding: 12px 15px;
            background: hsl(200 30% 12%);
            border: 1px solid hsl(200 30% 18%);
            border-radius: 8px;
            color: hsl(200 20% 70%);
            text-align: left;
            cursor: pointer;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        
        .filter-item:hover {
            background: hsl(200 30% 15%);
            border-color: hsl(195 100% 50%);
            color: hsl(195 100% 50%);
            transform: translateX(5px);
        }
        
        .filter-item.active {
            background: hsl(195 100% 50%);
            border-color: hsl(195 100% 50%);
            color: hsl(220 40% 5%);
            font-weight: 600;
            transform: translateX(5px);
        }
        
        .filter-count {
            float: right;
            background: hsl(200 30% 20%);
            padding: 2px 8px;
            border-radius: 12px;
            font-size: 0.8rem;
            color: hsl(200 20% 70%);
        }
        
        .filter-item.active .filter-count {
            background: hsl(220 40% 5%);
            color: white;
        }
        
        .sidebar-search {
            margin-top: 20px;
        }
        
        .search-box {
            display: flex;
            margin-bottom: 15px;
        }
        
        .search-box input {
            flex: 1;
            padding: 12px 15px;
            background: hsl(200 30% 12%);
            border: 1px solid hsl(200 30% 18%);
            border-radius: 8px 0 0 8px;
            color: white;
            font-size: 0.95rem;
        }
        
        .search-box button {
            padding: 12px 20px;
            background: hsl(195 100% 50%);
            border: none;
            border-radius: 0 8px 8px 0;
            color: hsl(220 40% 5%);
            font-weight: 600;
            cursor: pointer;
            font-size: 0.95rem;
        }
        
        .catalog-content {
            flex: 1;
        }
        
        .catalog-info {
            background: hsl(220 35% 8%);
            border-radius: 12px;
            padding: 20px;
            margin-bottom: 30px;
            border: 1px solid hsl(200 30% 18%);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }
        
        .catalog-count {
            color: hsl(200 20% 70%);
            font-size: 1rem;
        }
        
        .catalog-count strong {
            color: white;
            font-size: 1.2rem;
        }
        
        .current-filter {
            background: hsl(200 30% 15%);
            padding: 8px 15px;
            border-radius: 20px;
            color: hsl(195 100% 50%);
            font-weight: 500;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .current-filter::before {
            content: '';
        }
        
        .clear-filter {
            background: transparent;
            border: 1px solid hsl(200 30% 18%);
            color: hsl(200 20% 70%);
            padding: 8px 15px;
            border-radius: 20px;
            cursor: pointer;
            font-size: 0.9rem;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        
        .clear-filter:hover {
            border-color: hsl(195 100% 50%);
            color: hsl(195 100% 50%);
        }
        
        .clear-filter::before {
            content: '🗑️';
        }
        
        .catalog-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .no-products {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px;
            color: hsl(200 20% 60%);
            font-size: 1.2rem;
            background: hsl(220 35% 8%);
            border-radius: 12px;
            border: 1px solid hsl(200 30% 18%);
        }
        
        .product-card {
            background: hsl(220 35% 8%);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid hsl(200 30% 18%);
            transition: transform 0.3s ease, border-color 0.3s ease;
        }
        
        .product-card:hover {
            transform: translateY(-5px);
            border-color: hsl(195 100% 50%);
        }
        
        .product-card__image {
            width: 100%;
            height: 220px;
            overflow: hidden;
            background: hsl(200 30% 12%);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .product-card__image img {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
            padding: 10px;
            transition: transform 0.5s ease;
        }
        
        .product-card:hover .product-card__image img {
            transform: scale(1.05);
        }
        
        .image-placeholder {
            width: 100%;
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: hsl(200 20% 60%);
        }
        
        .placeholder-icon {
            font-size: 2.5rem;
            margin-bottom: 10px;
        }
        
        .product-card__content {
            padding: 20px;
        }
        
        .product-card__title {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        
        .product-card__title a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        
        .product-card__title a:hover {
            color: hsl(195 100% 50%);
        }
        
        .product-card__desc {
            color: hsl(200 20% 70%);
            font-size: 0.9rem;
            line-height: 1.5;
            margin-bottom: 20px;
        }
        
        .product-card__filter {
            display: inline-block;
            padding: 4px 10px;
            background: hsl(200 30% 15%);
            border-radius: 4px;
            color: hsl(195 100% 50%);
            font-size: 0.8rem;
            margin-bottom: 10px;
            font-weight: 500;
        }
        
        .product-card__actions {
            display: flex;
            gap: 10px;
        }
        
        .product-card__actions .btn {
            flex: 1;
            padding: 10px;
            font-size: 0.9rem;
            text-align: center;
        }
        
        .btn {
            display: inline-block;
            padding: 10px 20px;
            border-radius: 6px;
            font-weight: 600;
            text-decoration: none;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 1rem;
        }
        
        .btn-secondary {
            background: transparent;
            border: 2px solid hsl(200 30% 18%);
            color: hsl(200 20% 70%);
        }
        
        .btn-secondary:hover {
            border-color: hsl(195 100% 50%);
            color: hsl(195 100% 50%);
        }
        
        .btn-primary {
            background: hsl(195 100% 50%);
            color: hsl(220 40% 5%);
        }
        
        .btn-primary:hover {
            background: hsl(195 100% 40%);
        }
        
        .btn-success {
            background-color: #4CAF50;
            color: white;
            border: none;
        }
        
        @media (max-width: 992px) {
            .catalog-container {
                flex-direction: column;
                gap: 30px;
            }
            
            .catalog-sidebar {
                flex: none;
                width: 100%;
                position: static;
            }
            
            .catalog-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
                gap: 20px;
            }
        }
        
        @media (max-width: 768px) {
            .catalog-header h1 {
                font-size: 2.2rem;
            }
            
            .catalog-grid {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            }
            
            .catalog-info {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
        }
        
        @media (max-width: 480px) {
            .catalog-grid {
                grid-template-columns: 1fr;
            }
            
            .product-card__actions {
                flex-direction: column;
            }
            
            .filter-item {
                padding: 10px 15px;
            }
        }