/*
 * k28k Nav — Traditional
 * Clean horizontal nav with animated dropdown submenus.
 * All colours reference child-theme CSS variables.
 */

/* ── Top-level list ── */
.primary-nav__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 0.125rem;
}

/* ── All links ── */
.primary-nav__list a {
    display: flex;
    align-items: center;
    gap: 0.3em;
    padding: 0.5rem 0.85rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-body);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition:
        color var(--transition-duration) var(--transition-easing),
        background var(--transition-duration) var(--transition-easing);
    white-space: nowrap;
}

.primary-nav__list a:hover {
    color: var(--brand-accent-text);
    background: hsla(var(--brand-accent-h), var(--brand-accent-s), var(--brand-accent-l), 0.07);
}

.primary-nav__list .current-menu-item > a,
.primary-nav__list .current_page_item > a,
.primary-nav__list .current-menu-ancestor > a {
    color: var(--brand-accent-text);
    font-weight: 700;
}

/* ── Chevron on parent items ── */
.primary-nav__list .menu-item-has-children > a::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    opacity: 0.6;
    transition: transform var(--transition-duration) var(--transition-easing);
    flex-shrink: 0;
}

.primary-nav__list .menu-item-has-children:hover > a::after,
.primary-nav__list .menu-item-has-children:focus-within > a::after {
    transform: rotate(180deg);
}

/* ── Dropdown wrapper ── */
.primary-nav__list .sub-menu {
    list-style: none;
    margin: 0;
    padding: 0.375rem;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    min-width: 220px;
    background: var(--bg-page);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    z-index: 200;

    /* Hidden state */
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition:
        opacity var(--transition-duration) var(--transition-easing),
        transform var(--transition-duration) var(--transition-easing),
        visibility 0s var(--transition-duration);
    pointer-events: none;
}

/* Shown state */
.primary-nav__list .menu-item-has-children:hover > .sub-menu,
.primary-nav__list .menu-item-has-children:focus-within > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition:
        opacity var(--transition-duration) var(--transition-easing),
        transform var(--transition-duration) var(--transition-easing),
        visibility 0s;
    pointer-events: auto;
}

/* Position parent items for dropdown */
.primary-nav__list > .menu-item-has-children {
    position: relative;
}

/* ── Dropdown links ── */
.primary-nav__list .sub-menu a {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
    color: var(--text-body);
    white-space: nowrap;
}

.primary-nav__list .sub-menu a:hover {
    color: var(--brand-accent-text);
    background: hsla(var(--brand-accent-h), var(--brand-accent-s), var(--brand-accent-l), 0.07);
}

/* ── Third-level: fly out to the right ── */
.primary-nav__list .sub-menu .sub-menu {
    top: -0.375rem;
    left: calc(100% + 4px);
}

.primary-nav__list .sub-menu .menu-item-has-children > a::after {
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    border-left: 5px solid currentColor;
    border-right: none;
    margin-left: auto;
}

/* ── Mobile: polished hamburger + animated slide-down panel ── */
@media (max-width: 768px) {

    /* Hamburger button */
    .nav-toggle {
        display: flex !important;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        padding: 0;
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-sm);
        color: var(--text-body);
        transition:
            background var(--transition-duration) var(--transition-easing),
            border-color var(--transition-duration) var(--transition-easing);
    }
    .nav-toggle:hover {
        background: var(--bg-subtle);
        border-color: var(--border-strong);
    }

    /* Nav panel — always block; show/hide via opacity + visibility for smooth animation */
    .primary-nav {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-page);
        border-top: 1px solid var(--border-subtle);
        box-shadow: var(--shadow-md);
        z-index: 300;
        padding: 0.75rem;

        opacity: 0;
        visibility: hidden;
        transform: translateY(-6px);
        pointer-events: none;
        transition:
            opacity var(--transition-duration) var(--transition-easing),
            transform var(--transition-duration) var(--transition-easing),
            visibility 0s var(--transition-duration);
    }

    .primary-nav.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
        transition:
            opacity var(--transition-duration) var(--transition-easing),
            transform var(--transition-duration) var(--transition-easing),
            visibility 0s;
    }

    .primary-nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .primary-nav__list a {
        padding: 0.65rem 0.75rem;
        white-space: normal;
    }

    .primary-nav__list .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        border-left: 3px solid var(--border-subtle);
        border-radius: 0;
        padding: 0 0 0 0.75rem;
        margin: 0.25rem 0 0.25rem 0.75rem;
        pointer-events: auto;
        transition: none;
    }

    .primary-nav__list .menu-item-has-children > a::after {
        margin-left: auto;
    }
}