/**
 * Mega menu: multi-column dropdown + optional shortcode row (store-theme).
 *
 * - Contained mega: anchors to .navbar > .container (full Bootstrap container width),
 *   not #mainNav flex column (which is only “remaining” width between logo and icons).
 * - top: 100% = flush below the navbar row (container bottom).
 * - Full-viewport mega: width 100vw centered on container axis; inner padding matches .container.
 */

@media (min-width: 992px) {
    /* Positioning context: must be .container so left:0; right:0 match site content width. */
    .navbar > .container {
        position: relative;
        z-index: 1030;
    }

    /**
     * Mega 的 ::before 桥接横跨整行，会盖住其它顶级菜单；把可点的链接/品牌/工具条提到桥接之上。
     */
    .navbar > .container > .navbar-brand,
    .navbar > .container > .d-flex.ms-auto {
        position: relative;
        z-index: 1056;
    }

    .navbar #mainNav .navbar-nav > .nav-item > a.nav-link,
    .navbar #mainNav .navbar-nav > .nav-item > .d-flex > a.nav-link {
        position: relative;
        z-index: 1056;
    }

    .navbar .mega-menu-dropdown {
        display: grid;
        grid-template-columns: repeat(var(--store-mega-cols, 4), minmax(0, 1fr));
        gap: 0.75rem 1.25rem;
        padding: 1.25rem 1.5rem !important;
        min-width: 0;
        box-sizing: border-box;
        /* 与普通 .navbar .dropdown-menu 完全一致（不用 Bootstrap .shadow） */
        border: none;
        border-radius: 8px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        background-color: #ffffff;
        /* 滚轮在面板内时尽量少把滚动传给页面，避免误关 */
        overscroll-behavior: contain;
        z-index: 1048;
    }

    /**
     * 透明桥接带：填补链接与面板间空隙；z-index 低于顶级 nav-link，避免挡其它菜单点击。
     */
    .navbar .dropdown.position-static > .mega-menu-dropdown:not(.mega-menu-full-viewport)::before {
        content: '';
        position: absolute;
        bottom: 100%;
        left: 0;
        right: 0;
        height: 2.75rem;
        z-index: 0;
        pointer-events: auto;
    }

    /* 全宽 Mega：桥接用居中宽带 */
    .navbar .dropdown.position-static > .mega-menu-dropdown.mega-menu-full-viewport::before {
        content: '';
        position: absolute;
        bottom: 100%;
        left: 50%;
        width: min(85vw, 72rem);
        height: 2.75rem;
        z-index: 0;
        transform: translateX(-50%);
        pointer-events: auto;
    }

    /**
     * Default mega: same width as .container (full content width).
     * Parent .dropdown is position-static so containing block is .navbar > .container.
     */
    .navbar .dropdown.position-static > .mega-menu-dropdown:not(.mega-menu-full-viewport) {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        width: auto;
        max-width: none;
        transform: translateY(10px);
    }

    .navbar .dropdown.position-static:hover > .mega-menu-dropdown:not(.mega-menu-full-viewport) {
        transform: translateY(0);
    }

    /**
     * Full-bleed: 100vw with left:50% + translateX(-50%) still centers on viewport when .container is centered.
     * Inner padding matches Bootstrap .container max-widths.
     */
    .navbar .dropdown.position-static > .mega-menu-dropdown.mega-menu-full-viewport {
        position: absolute;
        top: 100%;
        left: 50%;
        right: auto;
        width: 100vw;
        max-width: 100vw;
        margin-left: 0;
        margin-right: 0;
        transform: translateX(-50%) translateY(10px);
        /* Content aligns with .container; background still full viewport */
        padding-left: max(0.75rem, calc((100vw - 960px) / 2)) !important;
        padding-right: max(0.75rem, calc((100vw - 960px) / 2)) !important;
    }

    .navbar .dropdown.position-static:hover > .mega-menu-dropdown.mega-menu-full-viewport {
        transform: translateX(-50%) translateY(0);
    }

    @media (min-width: 1200px) {
        .navbar .dropdown.position-static > .mega-menu-dropdown.mega-menu-full-viewport {
            padding-left: max(0.75rem, calc((100vw - 1140px) / 2)) !important;
            padding-right: max(0.75rem, calc((100vw - 1140px) / 2)) !important;
        }
    }

    @media (min-width: 1400px) {
        .navbar .dropdown.position-static > .mega-menu-dropdown.mega-menu-full-viewport {
            padding-left: max(0.75rem, calc((100vw - 1320px) / 2)) !important;
            padding-right: max(0.75rem, calc((100vw - 1320px) / 2)) !important;
        }
    }

    .navbar .mega-menu-shortcode-cell {
        grid-column: 1 / -1;
    }

    .navbar .mega-menu-shortcode-inner {
        max-width: 100%;
    }

    .navbar .mega-menu-dropdown > li {
        position: relative;
        min-width: 0;
    }

    .navbar .mega-menu-dropdown .dropdown-submenu > .dropdown-menu {
        min-width: 200px;
    }
}

/* Mobile offcanvas: stack columns; shortcode row full width */
@media (max-width: 991.98px) {
    .offcanvas-nav .mega-menu-dropdown {
        display: block;
        padding-left: 0.25rem !important;
    }

    .offcanvas-nav .mega-menu-shortcode-cell {
        padding-top: 0.5rem;
        margin-top: 0.25rem;
        border-top: 1px solid rgba(0, 0, 0, 0.06);
    }
}