body {
            font-family: 'Montserrat', sans-serif;
            scroll-behavior: smooth;
        }
        video {
             position: absolute;
             top: 0;
             left: 0;
             width: 100vw;
             height: 100vh;
             object-fit: cover; /* remplissage sans déformation */
             z-index: -1; /* met la vidéo en fond si tu ajoutes d'autres éléments */
        }
        .hero-gradient {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8eb 100%);
        }

        .product-card:hover .product-overlay {
            opacity: 1;
            transform: translateY(0);
        }

        .product-overlay {
            transition: all 0.3s ease;
            opacity: 0;
            transform: translateY(20px);
        }

        .testimonial-card {
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .testimonial-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.1);
        }

        .menu-open {
            transform: translateX(0);
        }

        .menu-closed {
            transform: translateX(100%);
        }

        .nav-link::after {
            content: '';
            display: block;
            width: 0;
            height: 2px;
            background: #000;
            transition: width 0.3s;
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .scroll-down {
            animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {
                transform: translateY(0);
            }
            40% {
                transform: translateY(-20px);
            }
            60% {
                transform: translateY(-10px);
            }
        }