*{
    box-sizing:border-box;
}
html{
    font-size:62.5%;
}
body{
    padding-top:80px;
    font-size:1.6 rem;
    font-family:"Sora",sans-serif;
    background: linear-gradient(135deg, #f4e1c1 0%, #d4a373 50%, #a47148 100%);
    
    background-attachment: fixed;
}
/*==============================common==================================*/
.container{
    width:100%;
    max-width: calc(100% - 48px);
    margin:0 auto;
}
a{
    text-decoration: none;
}
.section_heading{
    color:#dc143c;
    font-size:5rem;
    font-weight:600;
    line-height:1.2;
    letter-spacing:-1px;
    border-bottom:5px solid #ff0;
    font-family:serif;
}
.section_desc{
    margin-top:18px;
    color:#10375c;
    font-size:1.8rem;
    font-weight:300;
    line-height:1.67;
}
/*=============================header==================================*/
.header{
    background:#dc143c;
    min-height:120px;
    padding-top:20px;
    position: fixed;
     top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}
.header-top{
    display:flex;
    justify-content:space-between;
    align-items:center;
}
.navbar_list{
    display:flex;
}
.navbar_link{
    padding:8px 21px;
    color:#c9d2da;
    font-size:1.6rem;
    font-style:normal;
    font-weight:300;
    line-height:1.75;
}
.navbar_link:hover,
.navbar_link--active{
    text-shadow: 1px  0 0 currentColor;
    color:#fff;
}
.navbar_link--active::before{
    content:"";
    display:inline-block;
    width:6px;
    height:6px;
    border-radius:50%;
    background: #fff;
    top:-3px;
    position:relative;
    right: 8px;
}
.logo{
    width:90px;
    height:90px;
}
.logo_images{
    display: flex;
    align-items:center;
}
.text{
    display:flex;
    flex-direction:column;
    color:#fff;
}
.logo_text{
    font-size:5rem;
    font-weight:bold;
}
.logo_text_secondary{
    font-size:2.5rem;
}
/*==============hero===============*/
.hero{
    display:flex;
    justify-content:space-between;
    align-items:center;
    text-align:center;
    flex-direction:column;
    padding-top:76px;
    background-image:url("../../img/saiGon.png");
    min-height:100vh;
    background-repeat:no-repeat;
    background-size:cover;
    background-position:50% 50%;
    background-attachment:scroll;
    position:relative;
}
.hero::before{
    content:"";
    position:absolute;
    inset:0;
    background:rgba(0,0,0,0.6);
    z-index:0
}
.hero .container{
    z-index:1
}
.hero_heading{
    margin-top:150px;
    color:#fff;
    font-size:7rem;
    font_style:normal;
    font-weight:700;
    line-height:1.14;
    letter-spacing:1.4px;
}
.hero_content{
    margin: 5px 0 5px 0;
    color:#fff;
    font-size:4rem;
    font-weight:700;
    line-height:1.14;
    letter-spacing:1.12px;
}
.hero_desc{
    color:#fff;
    font-size:2.5rem;
    font_style:normal;
    font-weight:500;
    line-height:1.14;
    letter-spacing:2px;
    margin-top:20px;
}
/*=========================introduce========================*/
.introduce{
    margin-top:86px;
}
/*============================album=========================*/
.album{
    background:#fff;
    margin-top:78px;
    padding-top:86px;
    padding-bottom:68px;
}
.album_list{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:30px;
    margin-top:68px;
}
.album-item{
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:space-between;
    border: 6px solid #dc143c;
    border-radius:15px;
}
.album-item_img{
    width:100%;
    height:280px;
    object-fit:cover;
    border-radius:10px;
    padding:5px;
}
.album-item_title{
    color:#10375c;
    font-size:2.2rem;
    font-weight:600;
    margin: 15px 0 20px 0;
}
/*====================video=========================*/
.video{
    margin-top:86px;
}
.video_heading{
    margin-top:68px;
    color:#10375c;
    font-size:3rem;
    font-weight:600;
}
.video_content{
    margin-top:20px;
    display:flex;
    justify-content:space-between;
    align-items:center;
}
.video_desc{
    margin-left:20px;
    font-size:1.8rem;
    font-weight:500;
    padding: 0px 60px 0px 40px;
    line-height:1.3;
}
.video_wrapper{
    position:relative;
    width:80%;
    aspect-ratio:16 / 9;   /* giữ tỉ lệ chuẩn */
    border-radius:20px;
    overflow:hidden;
    box-shadow:0 12px 30px rgba(0,0,0,0.2);
    margin-bottom:25px;
}
.video_wrapper iframe,
.video_wrapper video{
    width:100%;
    height:100%;
    object-fit:cover;
    border:none;
}
.video_wrapper.video_wrapper--video{
    padding-top:20px;
    display:flex;
    margin: 0 auto;
}
.video_content .video_wrapper{
    width:200%;
}
/*==================quote================*/
.quote{
    margin-top:68px;
}
.quote_content{
    background:#fff;
    height:100px;
    border:1px solid #000;
    border-radius:20px;
    text-align:center;
}
.quote_title{
    margin:20px 10px 0 10px;
    font-size:2rem;
    font-weight:700;
    line-height:1.48;

}
/*===========================footer=========================*/
.footer{
    background:#dc143c;
    margin-top: 50px;
    text-align: center;
}
.footer_copyright-text {
  padding: 28px 0 20px;
  color: #fff;
  font-size: 1.7rem;
  line-height: 1.86;
}
/*=============================responsive=====================*/
@media(max-width:991.98px){
    .navbar{
        display:none;
    }
    .header-top{
        display:flex;
        justify-content:center;  /* căn giữa logo */
        align-items:center;
        position:relative;
    }
    .logo_images{
        position:static;
    }
    .header-top .logo_images{
        margin-left:-80px;
    }
    .menu-header_icon{
        position: absolute;
        top: 38px;
        right: 26px;
        color: #fff;
        width: 24px;
    }
    .menu-overplay{
        position:fixed;
        background:rgba(0,0,0,0.3);
        inset:0;
        z-index:1;
        opacity:0;
        visibility:hidden;;
        transition:0.5s
    }
    .menu-checkbox:checked ~ .menu-overplay{
        opacity:1;
        visibility:visible;
    }
    .menu-drawer{
        position: fixed;
        background: #1c0f13;
        top: 0;
        right: 0;
        bottom: 0;
        width: 80%;              /* 100% - 20% */
        z-index: 2;
        transform: translateX(100%);  /* Ẩn sang phải */
        transition: 0.5s;
        padding: 60px;
    }
    .menu-checkbox:checked ~ .menu-drawer{
        transform:translateX(0);
    }
    .close_menu{
        width:24px;
        color:#fff;
    }
    .menu-drawer_top{
        display:flex;
        justify-content:space-between;
        align-items:center;
    }
    .navbar_list{
        margin-top:25px;
        flex-direction:column;
    }
    #navbar_list--mobile{
        margin-top:25px;
    }
    .navbar_link{
        display:block;
        font-size:2rem;
    }
    .navbar_link:hover{
        background-color:#ff27;
    }
    /* ================= HERO ================= */
    .hero{
        background-attachment: scroll;
        padding-top:120px;
        min-height:80vh;
    }

    .hero_heading{
        margin-top:60px;
        font-size:4.5rem;
    }

    .hero_content{
        font-size:2.2rem;
        line-height:1.5;
    }

    .hero_desc{
        font-size:1.8rem;
    }

    /* ================= INTRODUCE ================= */
    .introduce{
        margin-top:60px;
        padding:0 10px;
    }

    .section_heading{
        font-size:3rem;
        text-align:center;
    }

    .section_desc{
        font-size:1.6rem;
        line-height:1.6;
        text-align:justify;
    }

    /* ================= ALBUM ================= */
    .album{
        padding-top:60px;
        padding-bottom:50px;
    }

    .album_list{
        grid-template-columns:repeat(2,1fr);
        gap:20px;
        margin-top:40px;
    }

    .album-item_img{
        height:200px;
    }

    .album-item_title{
        font-size:1.8rem;
        text-align:center;
    }

    /* ================= VIDEO ================= */
    .video{
        margin-top:60px;
    }

    .video_heading{
        font-size:2.4rem;
        margin-top:40px;
    }

    .video_content{
        flex-direction:column;  /* đổi từ ngang → dọc */
        align-items:flex-start;
    }

    .video_wrapper{
        width:100%;
        margin-bottom:20px;
    }

    .video_desc{
        margin-left:0;
        padding:0;
        font-size:1.6rem;
        line-height:1.6;
    }
    .video_wrapper.video_wrapper--youtube{
        width:100%;
    }
    .video_wrapper.video_wrapper--video{
        max-width:100%;
        padding-top:0;
    }

    /* ================= QUOTE ================= */
    .quote_content{
        height:auto;
        padding:20px;
    }

    .quote_title{
        font-size:1.6rem;
    }

    /* ================= FOOTER ================= */
    .footer_copyright-text{
        font-size:1.4rem;
        padding:20px 10px;
    }
}
@media(min-width:992px){
    .mobile-header{
        display:none;
    }
    .container{
        width:1170px;
        max-width:calc(100% - 48px);
    }
}
@media(max-width:767.98px){
    .menu-drawer_top .logo_images{
        width:40px;
        height:40px;
    }
    .menu-drawer_top .logo_images .text .logo_text{
        font-size:2rem;
    }
    .menu-drawer_top .logo_images .text .logo_text_secondary{
        font-size:1,7rem;
    }
    .navbar_list{
        margin-top:25px;
        flex-direction:column;
    }
    .navbar_link{
        display:block;
        font-size:1.6rem;
    }
    .close_menu{
        width:20px;
    }
    
}