nav {
    background-color: var(--color-primary);
    border-top: 2px solid var(--color-secondary);
    position: relative;
}

.nav-toggle {
    display: none;
    align-items: center;
    gap: var(--spacing-sm);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm) var(--spacing-md);
    width: 100%;
    justify-content: center;
}

.nav-current {
    display: none;
    color: white;
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 1rem;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    display: block;
    background-color: white;
    height: 3px;
    width: 25px;
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger {
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    top: 8px;
}

.nav-toggle[aria-expanded="true"] .hamburger {
    background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg) translate(5px, 6px);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg) translate(5px, -6px);
}

.nav-menu {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: nowrap;
    padding: 0;
    margin: 0;
}

nav li {
    margin: 0;
}

nav a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-sm);
    color: white;
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.nav-seal {
    height: 1.25rem;
    width: auto;
    filter: brightness(0) invert(1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

nav a:hover .nav-seal,
nav a.active .nav-seal {
    opacity: 1;
}

nav a:hover,
nav a.active {
    background-color: var(--color-secondary);
    color: var(--color-primary);
}

nav a:hover .nav-seal,
nav a.active .nav-seal {
    filter: brightness(0);
}

/* Instagram link */
.nav-instagram {
    padding: var(--spacing-sm) var(--spacing-md);
}

.nav-instagram img {
    height: 1.5rem;
    width: auto;
    filter: invert(77%) sepia(35%) saturate(518%) hue-rotate(5deg) brightness(91%) contrast(88%);
    transition: filter 0.3s ease, transform 0.3s ease;
}

.nav-instagram:hover {
    background-color: var(--color-secondary);
}

.nav-instagram:hover img {
    filter: brightness(0) invert(1);
    transform: scale(1.1);
}

/* Mobile navigation */
@media (max-width: 900px) {
    .nav-toggle {
        display: flex;
    }

    .nav-current {
        display: block;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        align-items: stretch;
    }

    .nav-menu.is-open {
        display: flex;
    }

    nav li {
        width: 100%;
        display: flex;
        justify-content: center;
    }

    nav a {
        text-align: center;
        padding: var(--spacing-sm);
        justify-content: center;
        width: 100%;
    }

    nav li:last-child {
        display: flex;
        justify-content: center;
    }

    nav li:last-child a.nav-instagram {
        padding: var(--spacing-sm);
        display: flex;
        justify-content: center;
        align-items: center;
        width: 100%;
        margin-left: 0;
        padding-left: 28px;
    }
}