/* Mobile hamburger nav — shared across all retireinarg pages */

.nav-burger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.4rem;
    z-index: 1001;
}
.nav-burger span {
    display: block;
    width: 22px;
    height: 2px;
    background: #889;
    margin: 5px 0;
    border-radius: 2px;
    transition: all 0.3s ease;
}
.nav-burger.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.nav-burger.open span:nth-child(2) {
    opacity: 0;
}
.nav-burger.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 640px) {
    .nav-burger { display: block; }

    .nav-links {
        display: none !important;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(13, 27, 42, 0.97);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        flex-direction: column !important;
        justify-content: center;
        align-items: center;
        gap: 1.8rem !important;
        z-index: 1000;
        padding: 2rem;
    }
    .nav-links.open {
        display: flex !important;
    }
    .nav-links a {
        font-size: 1.2rem !important;
        color: #ccc !important;
    }
    .nav-links a:hover,
    .nav-links a.active {
        color: #4ecdc4 !important;
    }
}