/* Side Nav */
    #sideNav {
        --space-x: 24px;
        --space-y: 12px;
        --logo-height: 18vh;
        --cert-height: min(50vw, 258px);
        height: 100%;
        width: 0;
        position: fixed;
        top: 0;
        left: 0;
        background-color: white;
        /* overflow-x: hidden; */
        overflow-x: visible;
        transition: 0.5s;
        padding-top: var(--space-y);
        z-index: 1040;
        /* opacity: .85; */
        opacity: 1;

        &:hover {
            opacity: 1;
        }

        & hr {
            margin-left: var(--space-x);
            margin-right: var(--space-x);
        }
    }

    #sideNav:not(.open) {
        opacity: 0;
        pointer-events: none;
    }

    #sideNav.open {
        width: min(500px, 100vw);
    }

    #sideNav .nav-item {
        padding: .5lh var(--space-x);
        text-decoration: none;
        font-size: var(--font-base);
        color: var(--ci-pink);
        font-weight: bold;
        display: block;
        transition: 0.2s;
        text-wrap: nowrap;
        display: flex;
        /*Text จะไม่เพิ่มบรรทัดตอน เปิด/ปิด*/

    }

    #sideNav .nav-item:is(:hover, [data-toggle="collapse"]:not(.collapsed)) {
        background-color: var(--ci-pink);
        color: white;
    }
    .box {
        margin: 0;
        padding: 0;
        height: 100%;
        height: 100vh;
    }
    
    .nav-item[data-toggle="collapse"] {

        & i {
            transform: rotate(0deg);
            transition: .5s;
        }

        &.collapsed i {
            transform: rotate(180deg);
        }
    }

    #sideNav .submenu {
        display: none;
        background-color: #495057;
    }

    #sideNav .submenu a {
        padding-left: 40px;
        font-size: 14px;
    }

    .closebtn {
        position: absolute;
        top: 0;
        right: 0px;
        font-size: 30px;
        color: white;
        transform: translate(0%, 100%);
transition: .5s;
        @media (min-width:992px) {
            top: 5%;
            color: var(--ci-pink);
            transform: translate(50%, -50%);
            &:hover{
                color: white; 
                & i{
                    background: var(--ci-pink);
                }
             }
        }
    }

    .closebtn i {
        font-size: 1.5rem;

        width: 30px;
        height: 30px;
        align-content: center;
        text-align: center;
        background: var(--ci-pink);
        border-radius: 50% 0 0 50%;
transition: .5s;
        @media (min-width:992px) {
            border-radius: 50%;
            background: white;
        }
    }

    .dropdown-toggle::after {
        float: right;
        margin-top: 5px;
    }

    /* Backdrop (มือถือ) */
    #backdrop {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        height: 100%;
        width: 100%;
        background-color: rgba(0, 0, 0, 0.4);
        /* ความมืดของฉากหลัง */
        z-index: 1039;
        /* ต้องน้อยกว่า #sideNav (1040) */
        transition: 0.5s ease;
        opacity: 0;
        pointer-events: none;
        backdrop-filter: blur(3px);
    }

    #backdrop.active {
        /* display: block; */
        opacity: 1;
        pointer-events: all;
    }

    /* Responsive */


    @media (max-width: 768px) {
        #sideNav {
            width: 0;
            max-width: 100%;
        }

        #sideNav.open {
            width: 100%;
        }

        #backdrop.active {
            display: block;
        }
    }

    .collapse {
        box-shadow: rgba(0, 0, 0, 0.35) 0px 0px 20px -10px inset;

    }

    #collapseBrand {
        & .brand-list {
            aspect-ratio: 1/1;
            align-content: center;
            border-radius: .5rem;

            &:hover {
                background-color: #F6F6F6;
                & img{
                    transform: scale(1.15);
                }
            }

            & img {
                aspect-ratio: 1 / 1;
                object-fit: contain;
                align-content: center;
                padding: .5rem;
                transition: .25s;

            }
        }
    }

    .open-nav {
        font-size: 1.5rem;
        border-color: transparent;

        &:hover {
            color: var(--ci-pink);

        }
    }

    figure:has(.nav-cert-img) {
        margin: var(--space-y) var(--space-x);
    }

    .nav-cert-img {
        height: var(--cert-height);
    }

    .top-nav-logo {
        height: var(--logo-height);
    }

    .nav-list {
        padding-bottom: var(--space-y);
        /* overflow-y: auto;
        max-height: calc(100dvh  - (var(--logo-height) + var(--cert-height) + 4rem + calc(var(--space-y) * 3))); */
    }

    .menu-section {
        overflow-y: auto;
        min-height: calc(100dvh - (var(--logo-height) + 2rem));
    }

    .bu-list {
        &:hover {
            & img {
                opacity: 0;

            }

            & .hover-img {
                opacity: 1;
            }

            & figure {
                background-color: #F6F6F6;
            }

        }

        & figure {
            position: relative;
            border-radius: .5rem;

        }

        & .hover-img {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            opacity: 0;
        }

        & img {
            transition: .5s;
            padding: .5rem;


        }
    }

    .logoSwiper .swiper-slide {
        width: auto;
        /* ทำให้ความกว้างยืดตามขนาดเนื้อหา */
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .logoSwiper .swiper-slide img {
        height: 40px;
        /* กำหนดความสูงคงที่ */
        width: auto;
        /* กว้างแปรผันตามอัตราส่วนภาพ */
        object-fit: contain;
    }
    .footer-logo{
        padding: 0 var(--space-x) var(--space-y) var(--space-x);
      
        & img{
            filter: opacity(.5);
            transition: .5s;
        }
        &:hover img{
            filter: opacity(1);
        }
    }

    #BuModal .modal-content{
        background: transparent;
        box-shadow: unset;
        border: 0;
    }
    #BuModal{
        background: rgba(255, 255, 255, 0.85);
 
        backdrop-filter: blur(5px);
        transition: .5s;
        & .close{
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translate(-50%, 150%);
            font-size: 3rem;
            color: var(--ci-primary);
            
        }
    }