/* Core responsive nav structural CSS — loaded globally from index.php so
   every instance gets the drawer/chevron/menu-actions behaviour regardless
   of theme. Each theme's style.css can still override colours, borders,
   and spacing; structural rules (positioning, display, transform) live
   here so they can't be forgotten when adding a new theme.

   Layout summary:
     #menu                — flex bar containing toggle, nav <ul>, actions <ul>
     ul.menu              — primary nav (collapses to drawer below 700px)
     ul.menu-actions      — login/profile + voice icons (always in bar)
     #nav-toggle          — hamburger button (visible below 700px)
     .menu-chevron        — per-parent expand toggle (visible below 700px)
     #nav-backdrop        — drawer dimmer (visible when drawer open) */

#menu {
    display: flex;
    align-items: center;
}

ul.menu-actions {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0 0 0 auto;
    padding: 0;
}
ul.menu-actions > li {
    position: relative;
}
ul.menu-actions > li > a {
    display: block;
    padding: 12px 16px;
    color: #aaa;
    text-decoration: none;
}
ul.menu-actions > li:hover > .submenu,
ul.menu-actions > li:hover > .submenu-right {
    display: block;
}

#nav-toggle {
    display: none;
    background: transparent;
    border: 0;
    padding: 12px 14px;
    cursor: pointer;
    box-sizing: border-box;
    /* Default to a mid-grey that reads on dark themes (the common case);
       light themes can override with `#nav-toggle { color: ... }`. The
       hamburger bars + chevron pick this up via currentColor. */
    color: #aaa;
}
#nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: currentColor;
    margin: 4px 0;
    transition: background 0.2s, transform 0.2s, opacity 0.2s;
    opacity: 0.6;
}
#nav-toggle:hover span,
#menu.open #nav-toggle span {
    opacity: 1;
}
#menu.open #nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
#menu.open #nav-toggle span:nth-child(2) { opacity: 0; }
#menu.open #nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

#nav-backdrop { display: none; }

/* Chevron hidden by default — desktop submenus open on hover. Mobile @media
   below switches it to display:flex. Defined BEFORE the @media so its
   display:flex wins on source-order tie-breaks. */
.menu-chevron { display: none; }

/* Responsive: drawer slide-in from the left below 700px. */
@media (max-width: 700px) {
    #nav-toggle { display: block; }

    ul.menu {
        position: fixed;
        top: 0;
        left: 0;
        width: 75%;
        max-width: 320px;
        height: 100vh;
        height: 100dvh;
        flex-direction: column;
        flex-wrap: nowrap;
        align-items: stretch;
        background: #1a1a1a;
        border-right: 1px solid rgba(128, 128, 128, 0.25);
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.5);
        transform: translateX(-100%);
        transition: transform 0.25s ease-out;
        z-index: 500;
        overflow-y: auto;
        padding: 8px 0;
    }
    #menu.open ul.menu {
        transform: translateX(0);
    }
    #menu.open #nav-backdrop {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.55);
        z-index: 450;
    }

    ul.menu > li { width: 100%; }
    ul.menu > li > a {
        padding: 12px 18px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .menu-chevron {
        display: flex;
        position: absolute;
        top: 0;
        right: 0;
        width: 44px;
        height: 44px;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        color: currentColor;
        opacity: 0.55;
        font-size: 11px;
        transition: transform 0.2s, opacity 0.2s;
        z-index: 2;
    }
    .menu-chevron:hover { opacity: 1; }
    ul.menu li.expanded > .menu-chevron {
        transform: rotate(90deg);
        opacity: 1;
    }

    ul.menu .submenu,
    ul.menu .subsubmenu,
    ul.menu .subsubsubmenu {
        display: none;
        position: static;
        background: transparent;
        border: 0;
        box-shadow: none;
        padding: 0;
        margin: 0;
        border-radius: 0;
        min-width: 0;
    }
    /* Suppress the desktop hover-expand at narrow widths — submenus only
       open when the chevron tap toggles `.expanded`. :not(.expanded) keeps
       the hover-hide from fighting the show-rule on specificity. */
    ul.menu > li:not(.expanded):hover > .submenu,
    ul.menu .submenu li:not(.expanded):hover > .subsubmenu,
    ul.menu .subsubmenu li:not(.expanded):hover > .subsubsubmenu {
        display: none;
    }
    ul.menu li.expanded > .submenu,
    ul.menu li.expanded > .subsubmenu,
    ul.menu li.expanded > .subsubsubmenu {
        display: block;
    }
    ul.menu .submenu a { padding: 10px 18px 10px 32px; }
    ul.menu .subsubmenu a { padding-left: 48px; }
    ul.menu .subsubsubmenu a { padding-left: 64px; }
}