/* Botón hamburguesa */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 6px;
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: #000000;
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

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

    .nav {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        flex-direction: column;
    }
    
    .nav.open {
        max-height: 400px;
    }

    .nav a {
        padding: 0.75rem 1.25rem;
        border-bottom: 1px solid rgba(255,255,255,0.15);
    }
}