/* RESET e VARIABILI */
        :root {
            --nero: #1a1a1a;
            --grigio-scuro: #2d2d2d;
            --grigio: #555;
            --grigio-chiaro: #f5f5f5;
            --bianco: #ffffff;
            --accento: #d4a574; /* colore accento caldo */
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Arial', sans-serif;
            line-height: 1.6;
            color: var(--grigio-scuro);
            background-color: var(--bianco);
        }
        
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* HEADER */
        .portfolio-header {
            text-align: center;
            padding: 60px 0 40px;
            background-color: var(--nero);
            color: var(--bianco);
        }
        
        .portfolio-header h1 {
            font-size: 2.8rem;
            margin-bottom: 15px;
            font-weight: 300;
            letter-spacing: 1px;
        }
        
        .portfolio-header p {
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto;
            color: #aaa;
        }
        
        /* GRIGLIA CATEGORIE */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
            padding: 30px 0;
        }
        
        .category-card {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
            height: 400px;
            cursor: pointer;
        }
        
        .category-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }
        
        .category-image {
           /* width: 100%;
            height: 100%;*/
            object-fit: cover;
            transition: var(--transition);
        }
        
        .category-card:hover .category-image {
            transform: scale(1.05);
        }
        
        .category-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
            color: var(--bianco);
            padding: 30px 20px 20px;
        }
        
        .category-title {
            font-size: 1.8rem;
            margin-bottom: 8px;
            font-weight: 600;
        }
        
        .category-count {
            font-size: 0.9rem;
            color: var(--accento);
            margin-bottom: 15px;
            display: block;
        }
        
        .category-link {
            display: inline-block;
            color: var(--bianco);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 1px;
            padding: 8px 0;
            border-bottom: 2px solid var(--accento);
            transition: var(--transition);
        }
        
        .category-link:hover {
            padding-right: 10px;
        }
        
        .category-link::after {
            content: '→';
            margin-left: 8px;
            transition: var(--transition);
        }
        
        .category-link:hover::after {
            margin-left: 12px;
        }
        
        /* BANNER PROMOZIONALE */
        .portfolio-banner {
            background-color: var(--grigio-chiaro);
            padding: 20px 0;
            text-align: center;
            margin: 2px 0;
        }
        
        .portfolio-banner h2 {
            font-size: 2rem;
            margin-bottom: 15px;
            color: var(--nero);
        }
        
        .portfolio-banner p {
            max-width: 700px;
            margin: 0 auto 25px;
            color: var(--grigio);
        }
        
        .btn-primary {
            display: inline-block;
            background-color: var(--nero);
            color: var(--bianco);
            padding: 14px 32px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            letter-spacing: 1px;
            transition: var(--transition);
            border: 2px solid var(--nero);
        }
        
        .btn-primary:hover {
            background-color: transparent;
            color: var(--nero);
        }
        
        /* RESPONSIVE */
        @media (max-width: 768px) {
            .categories-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            
            .category-card {
                height: 350px;
            }
            
            .portfolio-header h1 {
                font-size: 2.2rem;
            }
            
            .portfolio-banner h2 {
                font-size: 1.7rem;
            }
        }
        
        @media (max-width: 480px) {
            .category-card {
                height: 300px;
            }
            
            .portfolio-header {
                padding: 40px 0 30px;
            }
        }