/* Portfolio Section */
        .portfolio-section {
            background-color: #000;
            padding: 60px 0;
            color: #fff;
            min-height: 100vh;
        }
        .portfolio-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        .portfolio-section-head {
            text-align: center;
            margin-bottom: 50px;
        }
        .portfolio-section-head h5 {
            font-size: 24px;
            font-weight: 600;
            text-transform: uppercase;
            color: #fff;
        }
        .portfolio-filtering {
            text-align: center;
            margin-bottom: 50px;
        }
        .portfolio-filtering span {
            cursor: pointer;
            padding: 10px 20px;
            margin: 0 10px;
            color: #fff;
            font-size: 16px;
            text-transform: uppercase;
            transition: color 0.3s ease;
            display: inline-block;
        }
        .portfolio-filtering span.active {
            color: #3b82f6;
        }
        .portfolio-filtering span:hover {
            color: #3b82f6;
        }
        .portfolio-gallery {
            display: block; /* Isotope ile çalışması için */
        }
        .portfolio-gallery-item {
            width: 33.33%;
            padding: 10px;
            box-sizing: border-box;
            position: relative;
        }
        .portfolio-gallery-item img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .portfolio-item-overlay {
            position: absolute;
            top: 10px;
            left: 10px;
            right: 10px;
            bottom: 10px;
            background: rgba(0, 0, 0, 0.6);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .portfolio-gallery-item:hover .portfolio-item-overlay {
            opacity: 1;
        }
        .portfolio-item-overlay a {
            color: white;
            font-size: 24px;
            margin-bottom: 10px;
        }
        .portfolio-item-overlay p {
            color: white;
            font-size: 16px;
            text-transform: uppercase;
        }
        
        /* Responsive */
        @media (max-width: 768px) {
            .portfolio-gallery-item {
                width: 50%;
            }
        }
        @media (max-width: 480px) {
            .portfolio-gallery-item {
                width: 100%;
            }
        }