@media(max-width: 1199px){
    .container{
        max-width: 100%;
        --bs-gutter-x: 30px;

    }
}

@media(max-width: 991px){
    .header{
        padding: 12px 0;
    }
    .header-backdrop,
    .header-close-btn,
    .header-hamburger-btn{
        display: block;
    }
    .header-hamburger-btn{
        height: 34px;
        width: 40px;
        cursor: pointer;
        border: 0;
        background-color: transparent;
    }
    .header-hamburger-btn span{
        display: block;
        height: 2px;
        width: 24px;
        background-color: var(--black-90);
        position: relative;
        margin: auto;
    }
    .header-hamburger-btn span::before,
    .header-hamburger-btn span::after{
        content: '';
        position: absolute;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: var(--black-90);
    }
    .header-hamburger-btn span::before{
        top: -7px;
    }
    .header-hamburger-btn span::after{
        top: 7px;
    }
    .header-close-btn{
        height: 40px;
        width: 40px;
        background-color: var(--main-color);
        position: absolute;
        left: 15px;
        top: 15px;
        color: var(--WHITE);
        border: 0;
        border-radius: 5px;
        cursor: pointer;
    }
    .header-menu{
        position: fixed;
        width: 300px;
        height: 100vh;
        top: 0;
        right: -300px;
        z-index: 1000;
        padding: 70px 0 50px;
        transition: all 0.5s ease;
        background-color: var(--white);
        box-shadow: var(--shadow);
        overflow-y: auto;
        visibility: hidden;
    }
    .header-menu.open{
        right: 0;
        visibility: visible;
    }
    .header .menu-item{
        display: block;
        margin: 0;
    }
    .header .menu-item > a{
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 12px 15px;
        border-bottom: 1px solid var(--border-color-1);
    }
    .header .menu-item:first-child > a{
        border-top: 1px solid var(--border-color-1);
    }
    .header .menu-item.active > a i {
        transition: rotate (-180deg);
    }
    .header .sub-menu{
        position: relative;
        width: 100%;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        transform: translateY(0);
        top: auto;
        padding: 0;
        border-radius: 0;
        max-height: 0;
        overflow: hidden;
    }
    .header .sub-menu-item a{
        padding: 12px 45px;
        border-bottom: 1px solid var(--border-color-1);
    }
    .header-backdrop{
        position: fixed;
        z-index: 999;
        left: 0;
        top: 0;
        height: 100%;
        width: 100%;
        opacity: 0;
        transition: all 0.5s ease;
        visibility: hidden;
        background-color: var(--white);
    }
    .header-backdrop.active{
        visibility: visible;
        opacity: 0.8;
    }
    .circular-img{
        max-width: 280px;
    }
    .circular-img img{
        max-width: 240px;
    }
    .circular-img-circle{
        height: 280px;
        width: 280px;
    }
    .banner-text h1{
        font-size: 35px;
    }
    .section-title .sub-title{
        font-size: 30px;
    }
    .course-sidebar{
        margin-top: 30px;
    }
    .course-instructor .img-box img{
        width: 100px;
    }
    .course-instructor .details-wrap{
        margin-bottom: 15px;
    }
}

@media(max-width: 767px){
    .container{
        --bs-gutter-x: 15px;
    }
    .box{
        padding: 20px 15px;
    }
    .banner-text h1{
        font-size: 24px;
    }
    .bai-section{
        text-align: center;
    }
    .section-title .title,
    h3,
    .banner-text h2{
        font-size: 18px;
    }
    .form-title,
    .section-title .sub-title{
        font-size: 22px;
    }
    .course-header h2{
        font-size: 24px;
    }
    .course-curriculum .accordion-button span{
        position: relative;
        right: auto;
        font-size: 12px;
        width: 100%;
        margin-top: 8px;
    }
    .course-curriculum .accordion-button{
        padding-right: 15px;
    }
    .course-curriculum ul li span{
        font-size: 12px;
        position: relative;
        display: block;
        margin-top: 5px;
    }
    .course-curriculum ul li{
        padding: 0 0 0 20px;
    }
    .rating-box{
        margin-bottom: 15px;
    }
    .rating-summary{
         margin-bottom: 15px;
    }
}

@media(max-width: 575px){
    .circular-img{
        max-width: 230px;
    }
    .circular-img img{
        max-width: 200px;
    }
    .circular-img-circle{
        width: 230px;
        height: 230px;
    }
    .footer-item{
        text-align: center;
    }
    .header-logo a{
        font-size: 22px;
    }
    .modal-dialog{
        margin: 8px 15px;
    }
}