/* === Navbar générale === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: auto;/* hauteur calculée automatiquement */
    min-height: 60px;
    background: #111;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 5000;
    color: white;
}

.navbar-brand .logo {
    height: 40px;
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: 20px;
}

.navbar-link {
    color: white;
    text-decoration: none;
}
.navbar-link:hover {
    text-decoration: underline;
}

/* === Hamburger === */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 25px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}
.hamburger span {
    display: block;
    width: 100%;
    height: 3px;
    background: white;
    border-radius: 2px;
}

/* État actif → croix */
.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
}
.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* === Overlay === */
.navbar-overlay {
    position: fixed;
    top: var(--header-height, 100px); /* démarre sous navbar + subnav */
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    z-index: 2500;
}
.navbar-overlay.active {
    display: block;
}

/* === Responsive === */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .navbar-links {
        display: none;
        flex-direction: column;
        gap: 15px;
        background: #111;
        width: 100%;
        padding: 15px;
        position: absolute;
        top: 60px;
        left: 0;
    }
    .navbar-links.open {
        display: flex;
    }
}