/**
 * Xe Tải Vĩnh Phúc - Luxury Desktop Navigation & Submenu Styles
 * Thiết kế Dropdown Submenu cao cấp, hiện đại chuẩn nhận diện thương hiệu THACO.
 */

@media only screen and (min-width: 850px) {

    /* 1. Hộp Dropdown Submenu Cao Cấp */
    .header-nav .nav-dropdown,
    .nav-dropdown,
    .nav-dropdown-default {
        background: rgba(255, 255, 255, 0.98) !important;
        -webkit-backdrop-filter: blur(12px) saturate(180%);
        backdrop-filter: blur(12px) saturate(180%);
        border-radius: 14px !important;
        border: 1px solid rgba(0, 72, 143, 0.1) !important;
        border-top: 3.5px solid #D32F2F !important; /* Chỉ đỏ THACO nổi bật */
        box-shadow: 0 16px 40px rgba(0, 30, 61, 0.16), 0 4px 12px rgba(0, 0, 0, 0.04) !important;
        padding: 8px 6px !important;
        min-width: 240px !important;
        margin-top: 8px !important;
        transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.25s ease !important;
    }

    /* Mũi tên nhọn chỉ lên (nếu có) */
    .nav-dropdown::before,
    .nav-dropdown::after {
        display: none !important;
    }

    /* 2. Danh Sách Từng Mục (List Item) */
    .header-nav .nav-dropdown > li,
    .nav-dropdown > li {
        border: none !important;
        border-bottom: none !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    .header-nav .nav-dropdown > li + li,
    .nav-dropdown > li + li {
        border-top: none !important;
    }

    /* 3. Thẻ Liên Kết (Menu Item Link) */
    .header-nav .nav-dropdown > li > a,
    .nav-dropdown > li > a {
        display: flex !important;
        align-items: center !important;
        justify-content: space-between !important;
        padding: 11px 16px !important;
        margin: 3px 4px !important;
        border-radius: 9px !important;
        color: #1e293b !important;
        font-size: 13.5px !important;
        font-weight: 700 !important;
        text-transform: uppercase !important;
        letter-spacing: 0.3px !important;
        line-height: 1.4 !important;
        border-left: 3px solid transparent !important;
        transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1) !important;
        position: relative;
    }

    /* Icon mũi tên trượt nhẹ bên phải */
    .header-nav .nav-dropdown > li > a::after,
    .nav-dropdown > li > a::after {
        content: '›';
        font-size: 16px;
        font-weight: 800;
        color: #94a3b8;
        margin-left: 8px;
        transition: all 0.22s ease;
        opacity: 0.5;
    }

    /* 4. Hiệu Ứng Hover & Active Cực Đẹp */
    .header-nav .nav-dropdown > li > a:hover,
    .nav-dropdown > li > a:hover,
    .header-nav .nav-dropdown > li.current-menu-item > a,
    .nav-dropdown > li.current-menu-item > a {
        background: #f0f7ff !important; /* Xanh nhẹ tinh tế */
        color: #D32F2F !important; /* Chữ đỏ THACO */
        border-left-color: #D32F2F !important; /* Viền đỏ bên trái */
        padding-left: 19px !important;
        box-shadow: 0 2px 8px rgba(211, 47, 47, 0.08) !important;
    }

    .header-nav .nav-dropdown > li > a:hover::after,
    .nav-dropdown > li > a:hover::after,
    .header-nav .nav-dropdown > li.current-menu-item > a::after,
    .nav-dropdown > li.current-menu-item > a::after {
        color: #D32F2F !important;
        transform: translateX(3px);
        opacity: 1;
    }

    /* 5. Menu Cấp 2 Lồng Sâu Hơn (Nested Dropdown) */
    .nav-dropdown .nav-dropdown {
        margin-left: 10px !important;
        margin-top: -6px !important;
    }
}