/* Hero background avec overlay */
.hero-background {
    background-image: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('/images/welcome.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
}

@media (max-width: 639px) {
    .hero-background {
        background-attachment: scroll;
    }
}

/* Barre de défilement personnalisée (optionnelle) */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f1f1;
}
::-webkit-scrollbar-thumb {
    background: #9ca3af;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #6b7280;
}