/* Animation du header */
#main-header {
    transition: all 0.3s ease-in-out;
    transform: translateY(0);
}

#main-header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* Animation du titre */
#site-title {
    transition: all 0.3s ease-in-out;
}

/* Animation des liens de navigation */
.nav-link {
    position: relative;
    transition: all 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: #EF7966;
    transition: width 0.3s ease;
}

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

/* Animation du bouton de contact */
.contact-button {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.contact-button::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%, -50%);
    transform-origin: 50% 50%;
}

.contact-button:focus:not(:active)::after {
    animation: ripple 1s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(20, 20);
        opacity: 0;
    }
}

/* Animation du menu mobile */
#mobile-menu {
    transition: all 0.3s ease-in-out;
    max-height: 0;
    overflow: hidden;
}

#mobile-menu.show {
    max-height: 500px;
    padding: 1rem 0;
}