* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Arial', sans-serif;
            transition: background-color 0.5s ease;
            background-color: #f5f5f5;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 20px;
        }

        h1 {
            text-align: center;
            color: #333;
            margin-bottom: 30px;
            font-size: 2.5em;
        }

        .main-content {
            display: flex;
            gap: 30px;
        }

        .filters {
            width: 200px;
            flex-shrink: 0;
        }

        .filter-btn {
            width: 100%;
            padding: 15px;
            margin-bottom: 10px;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            color: white;
            text-transform: uppercase;
        }

        .filter-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }

        .filter-btn.active {
            transform: scale(1.05);
            box-shadow: 0 8px 20px rgba(0,0,0,0.4);
        }

        .btn-todos { background-color: #666; }
        .btn-rojo { background-color: #e74c3c; }
        .btn-azul { background-color: #3498db; }
        .btn-verde { background-color: #2ecc71; }
        .btn-amarillo { background-color: #f1c40f; color: #333; }

        .productos {
            flex: 1;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 25px;
        }

        .card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
            transition: transform 0.3s, box-shadow 0.3s;
            cursor: pointer;
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 15px rgba(0,0,0,0.2);
        }

        .card-image {
            width: 100%;
            height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 80px;
            background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
            overflow: hidden;
            position: relative;
        }

        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .card-content {
            padding: 20px;
        }

        .card-title {
            font-size: 1.3em;
            color: #333;
            margin-bottom: 10px;
            font-weight: bold;
        }

        .card-description {
            color: #666;
            line-height: 1.5;
            font-size: 0.95em;
        }

        .leer-mas {
            color: #3498db;
            font-weight: bold;
            cursor: pointer;
            text-decoration: underline;
        }

        .hidden {
            display: none;
        }

        @media (max-width: 768px) {
            .main-content {
                flex-direction: column;
            }

            .filters {
                width: 100%;
                display: flex;
                flex-wrap: wrap;
                gap: 10px;
            }

            .filter-btn {
                flex: 1;
                min-width: 120px;
            }

            .productos {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            }
        }