/* nav.css */

.app-shell {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 14px;

    width: 100%;
    margin: 0;
    padding: 16px;
}

.app-shell.app-shell-public {
    grid-template-columns: minmax(0, 1fr);
}

.app-nav {
    min-width: 0;
    border: 1px solid var(--app-border);
    background: var(--app-surface-grad);
    border-radius: 16px;
    box-shadow: var(--app-shadow);

    padding: 10px;
    height: fit-content;

    display: grid;
    gap: 6px;
}

.app-nav__group {
    display: grid;
    gap: 6px;
}

.app-nav__item {
    display: flex;
    align-items: center;

    min-height: 40px;
    padding: 10px 12px;

    border-radius: 12px;
    text-decoration: none;

    color: var(--app-text-nav);
    font-weight: 800;
    font-size: 14px;

    border: 1px solid transparent;
}

.app-nav__item:hover {
    background: var(--app-surface-2);
    border-color: var(--app-border);
}

.app-nav__item.is-active {
    background: var(--app-surface-2);
    border-color: var(--app-primary);
    box-shadow: var(--app-nav-active-shadow);
}

.app-nav__sub {
    display: grid;
    gap: 6px;
    padding-left: 10px;
}
.app-nav__sub--nested {
    padding-left: 18px;
}
.app-nav__sub.is-collapsed {
    display: none;
}

.app-nav__subitem {
    display: flex;
    align-items: center;

    min-height: 36px;
    padding: 8px 10px;

    border-radius: 10px;
    text-decoration: none;

    color: var(--app-text-muted);
    font-weight: 800;
    font-size: 13px;

    border: 1px solid transparent;
}

.app-nav__subitem:hover {
    background: var(--app-surface-2);
    border-color: var(--app-border);
    color: var(--app-text-nav);
}

.app-nav__subitem.is-active {
    background: var(--app-surface-2);
    border-color: var(--app-primary);
    box-shadow: var(--app-nav-sub-active-shadow);
    color: var(--app-text-nav);
}

/* collapsed sidebar */
body.app-nav-collapsed .app-shell {
    grid-template-columns: 1fr;
}
body.app-nav-collapsed .app-nav {
    display: none;
}

/* responsive: stack nav above content */
@media (max-width: 991.98px) {
    .app-shell {
        grid-template-columns: 1fr;
        padding: 12px;
    }

    .app-nav {
        display: grid;
        gap: 6px;
        padding: 10px;
        max-width: 100%;
    }

    .app-nav__item,
    .app-nav__subitem {
        white-space: normal;
        width: 100%;
    }

    .app-nav__group {
        display: grid;
        gap: 6px;
    }

    .app-nav__sub {
        display: grid;
        gap: 6px;
        padding-left: 10px;
    }

    /* on small screens, collapsed just hides nav */
    body.app-nav-collapsed .app-nav { display: none; }
}