:root {
            --primary-color: #2c3e50;
            --secondary-color: #3498db;
            --accent-color: #e74c3c;
            --light-color: #ecf0f1;
            --dark-color: #2c3e50;
        }
        
       
        
       
       
        
        .search-container {
            display: flex;
            justify-content: center;
            margin: 2rem 0;
        }
        
        #search {
            width: 100%;
            max-width: 600px;
            padding: 15px 20px;
            border: 2px solid #ddd;
            border-radius: 50px;
            font-size: 1.1rem;
            outline: none;
            transition: all 0.3s;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        
        #search:focus {
            border-color: var(--secondary-color);
            box-shadow: 0 2px 15px rgba(52, 152, 219, 0.3);
        }
        
        .counter {
            text-align: center;
            margin: 1rem 0;
            font-size: 1.2rem;
            color: var(--dark-color);
        }
        
        .counter span {
            font-weight: bold;
            color: var(--accent-color);
            font-size: 1.5rem;
        }
        
        .exhibitors-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
            margin-top: 2rem;
        }
        
        .exhibitor-card {
            background: white;
            border-radius: 8px;
            padding: 20px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        
        .exhibitor-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.15);
        }
        
        .exhibitor-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: var(--secondary-color);
        }
        
      
        
        .exhibitor-name {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--primary-color);
        }
        
        .no-results {
            grid-column: 1 / -1;
            text-align: center;
            padding: 2rem;
            color: #666;
        }
        
        .category-filter {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin: 1rem 0;
        }
        
        .category-btn {
            padding: 8px 15px;
            background: white;
            border: 1px solid #ddd;
            border-radius: 20px;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .category-btn:hover, .category-btn.active {
            background: var(--secondary-color);
            color: white;
            border-color: var(--secondary-color);
        }
        
        footer {
            text-align: center;
            margin-top: 3rem;
            padding: 2rem 0;
            background: var(--primary-color);
            color: white;
        }
        
        @media (max-width: 768px) {
            .exhibitors-grid {
                grid-template-columns: 1fr;
            }
            
            h1 {
                font-size: 2rem;
            }
        }