body.nav-open {
    overflow: hidden;
}

.site-header {
    background: var(--bg-nav-footer);
    position: relative;
    z-index: 500;
    max-width: 100%;
}

:is(.public-shell-page, .admin-shell-page) .public-shell-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
}

:is(.public-shell-page, .admin-shell-page) .public-shell-header .nav {
    gap: var(--space-lg);
    margin: 0 auto;
    max-width: 1200px;
    min-height: 4.75rem;
    padding: var(--space-sm) var(--space-lg);
}

:is(.public-shell-page, .admin-shell-page) .public-shell-brand {
    display: inline-flex;
    flex: 0 0 auto;
}

:is(.public-shell-page, .admin-shell-page) .public-shell-brand img {
    display: block;
    height: 3.25rem;
    width: auto;
}

:is(.public-shell-page, .admin-shell-page) .nav-menu {
    background: var(--color-surface);
}

:is(.public-shell-page, .admin-shell-page) .nav-menu .public-shell-nav-link,
:is(.public-shell-page, .admin-shell-page) .nav-menu button.public-shell-nav-link {
    align-items: center;
    border-radius: var(--radius-control);
    color: var(--color-text-secondary);
    display: inline-flex;
    font-size: var(--type-body-small-size);
    font-weight: 600;
    gap: var(--space-sm);
    min-height: 2.75rem;
    padding: var(--space-sm) var(--space-md);
    text-decoration: none;
}

:is(.public-shell-page, .admin-shell-page) .nav-menu .public-shell-nav-link:hover,
:is(.public-shell-page, .admin-shell-page) .nav-menu .public-shell-nav-link[aria-current="page"],
:is(.public-shell-page, .admin-shell-page) .nav-menu button.public-shell-nav-link:hover {
    background: var(--color-primary-100);
    color: var(--color-primary-700);
}

:is(.public-shell-page, .admin-shell-page) .nav-menu .public-shell-nav-action {
    background: var(--color-primary-600);
    color: var(--color-surface);
}

:is(.public-shell-page, .admin-shell-page) .nav-menu .public-shell-nav-action:hover {
    background: var(--color-primary-700);
    color: var(--color-surface);
}

:is(.public-shell-page, .admin-shell-page) .nav-toggle:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--color-primary-500) 30%, var(--color-surface));
    outline-offset: 0.375rem;
}

:is(.public-shell-page, .admin-shell-page) .nav-toggle {
    align-items: center;
    display: inline-flex;
    justify-content: center;
    min-height: 2.75rem;
    min-width: 2.75rem;
}

@media (min-width: 768px) {
    :is(.public-shell-page, .admin-shell-page) .nav-toggle { display: none; }
}

:is(.public-shell-page, .admin-shell-page) .hamburger span {
    background: var(--color-primary-700);
}

@media (max-width: 767px) {
    
}

.nav {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-width: 0;
    max-width: 100%;
    padding: 0.75rem 1rem;
    
}

.nav a {
    color: var(--action-dark);
}
.nav a:hover {
    color: var(--action-dark-hover);
}

.nav-logo {
    text-decoration: none;
    font-weight: 600;
}

.nav-toggle {
    background: none;
    border: none;
    padding: 0;
    flex: 0 0 auto;
    margin-left: auto;
}

.nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    min-width: 0;
    max-width: 100%;

    background: var(--bg-nav-footer);

    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: var(--p-3);

    transform: translateY(-20px);
    opacity: 0;
    pointer-events: none;

    z-index: 901;

    transition:
        transform 0.25s ease,
        opacity 0.2s ease;
}

.nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
}


.nav-menu a,
.nav-menu button {
    background: none;
    border: none;
    text-align: left;
    font: inherit;
    cursor: pointer;
    color: var(--action-dark);
    /* Visibility must change immediately so opening a menu can move keyboard focus. */
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Special case for nav btns since "logout" is a form button */
.nav-menu button:hover {
    color: var(--action-dark-hover);
}
.nav-menu button:focus-visible {
    border: none;
    border-radius: var(--radius-control);
    outline: 3px solid color-mix(in srgb, var(--color-primary-500) 30%, var(--color-surface));
    outline-offset: 2px;
}

.nav-menu a,
.nav-menu button {
    max-width: 100%;
    overflow-wrap: anywhere;
}

/* Mobile expanded nav backdrop */
.nav-backdrop {
    position: fixed;
    inset: 0;
    background: var(--overlay-dark);

    opacity: 0;
    pointer-events: none;

    transition: opacity 0.25s ease;
    z-index: 400;
}

/* When nav is open */
body.nav-open .nav-backdrop {
    opacity: 1;
    pointer-events: auto;
}

/* Desktop */
@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }

    .nav-menu {
        align-items: center;
        position: static;
        transform: none;
        opacity: 1;
        pointer-events: auto;

        flex-direction: row;
        padding: 0;
        background: none;
    }
}

/* Just in case, prevent accidental showing menu before opacity is applied */
@media (max-width: 767px) {
    .nav-menu {
        visibility: hidden;
        max-height: calc(100vh - 3rem);
        max-height: calc(100dvh - 3rem);
        overflow-y: auto;
        overscroll-behavior: contain;
    }

    :is(.public-shell-page, .admin-shell-page) .public-shell-header .nav {
        min-height: 4rem;
        padding-inline: var(--space-md);
    }

    :is(.public-shell-page, .admin-shell-page) .public-shell-brand img {
        height: 2.75rem;
    }

    :is(.public-shell-page, .admin-shell-page) .nav-menu {
        border-bottom: 1px solid var(--color-border);
        box-shadow: 0 1rem 2rem color-mix(in srgb, var(--color-text-primary) 12%, transparent);
        gap: var(--space-xs);
        padding: var(--space-md);
    }

    :is(.public-shell-page, .admin-shell-page) .nav-menu .public-shell-nav-link,
    :is(.public-shell-page, .admin-shell-page) .nav-menu button.public-shell-nav-link {
        width: 100%;
    }

    .nav-menu.is-open {
        visibility: visible;
    }
}

@media (prefers-reduced-motion: reduce) {
    .nav-menu a,
    .nav-menu button {
        transition: none;
    }
    .nav-menu {
        transition: none;
    }
    .nav-backdrop {
        transition: none;
    }
}


/***** HAMBURGER *****/

.hamburger {
    --bar-height: 3px;
    --bar-spacing: 7px;
    cursor: pointer;

    width: 30px;
    height: calc(var(--bar-height) * 3 + var(--bar-spacing) * 2);
    position: relative;
}


.hamburger span {
    position: absolute;
    left: 0;
    width: 100%;
    height: var(--bar-height);
    background: var(--action-dark);
    border-radius: 999px;
    transition: transform 0.25s ease, opacity 0.25s ease;
    transition: 0.3s;
}

.hamburger:hover span {
    background: var(--action-dark-hover);
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: calc(var(--bar-height) + var(--bar-spacing)); }
.hamburger span:nth-child(3) { top: calc((var(--bar-height) + var(--bar-spacing)) * 2); }

/* Open → X */
.hamburger.is-open span:nth-child(1) {
    transform: translateY(calc(var(--bar-height) + var(--bar-spacing))) rotate(45deg);
}

.hamburger.is-open span:nth-child(2) {
    opacity: 0;
}

.hamburger.is-open span:nth-child(3) {
    transform: translateY(calc(-1 * (var(--bar-height) + var(--bar-spacing)))) rotate(-45deg);
}



/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .hamburger span {
        transition: none;
    }
}