*,html{
    scroll-behavior: smooth;
    }
    
    *, *:after, *:before {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    }
    
    :root{
    scrollbar-color: rgb(210,210,210) rgb(46,54,69) !important;
    scrollbar-width: thin !important;
    --white:#fff;
    --black:#000;
    --dark:#2a2a2e;
    --yellow:#f7b500;
    --darkyellow:#f79300;
    --red:#fe3e30;
    --darkred:#f72729;
    --blue:#2588cf;
    --darkblue:#026dbe;
    --defaultfont:'Poppins', sans-serif;
    --titlefont:'Roboto', sans-serif;
    }
    
    ::-webkit-scrollbar {
    height: 12px;
    width: 6px;
    background: var(--dark);
    }
    
    ::-webkit-scrollbar-thumb {
    background: var(--dark);
    -webkit-box-shadow: 0px 1px 2px rgba(0, 0, 0, 0.75);
    }
    
    ::-webkit-scrollbar-corner {
    background: var(--dark);
    }
    
    
    /********************************
              DEFAULT
    *********************************/
    body{
    margin:0;
    overflow-x:hidden !important;
    font-family:var(--defaultfont);
    padding-top: 70px; /* Thêm khoảng trống tương ứng với chiều cao của header */
    }
    
    a{
    text-decoration:none;
    color:inherit;
    }
    
    a, button, input, select, p{
    outline:none !important;
    transition:0.5s;
    } 
    
    em{
    font-style:normal;
    color:var(--primary);
    }
    
    p{
    line-height:1.6em;
    font-size:14px;
    color:rgba(1,1,1,0.7);
    }
    
    img{
    max-width:100%;
    }
    
    figure{
    margin:0;
    padding:0;
    }
    
    fieldset{
    width:100%;
    border:0;
    padding:0;
    margin:0;
    }
    
    .title{
    font-family:var(--titlefont);
    }
    
    .btn1, .btn2{
    padding:1rem 2rem;
    border-radius:10px;
    text-align:center;
    border:0;
    }
    
    .btn1{
    background-color:var(--yellow);
    color:var(--white);
    }
    
    .btn1:hover{
    background-color:var(--darkyellow);
    }
    
    .btn2{
    background-color:var(--red);
    color:var(--white);
    }
    
    .btn2:hover{
    background-color:var(--darkred);
    }
    
    
    
    
    /********************************
              HEADER
    *********************************/
  /* Header Styles */
/* Header styles (giữ nguyên các style trước đó) */
header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-size: cover;
    background-repeat: no-repeat;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-size: cover;
    background-repeat: no-repeat;
    position: fixed; /* Cố định vị trí của header */
    top: 0; /* Đặt vị trí ở trên cùng */
    left: 0;
    z-index: 1000; /* Đảm bảo header nằm trên các phần tử khác */
    height: 70px; /* Giả sử chiều cao của header là 70px */
    background-color: #004080; /* Màu nền của header */
}

.container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo img {
    height: 59px;
}

/* Hamburger styles */
.hamburger {
    display: none; /* Ẩn hamburger trên màn hình lớn */
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    height: 3px;
    width: 25px;
    background-color: white;
    margin: 4px 0;
    transition: all 0.3s ease;
}

/* Menu styles */
.nav-menu {
    display: flex;
}

.menu-list {
    list-style: none;
    display: flex;
}

.menu-list li {
    margin: 0 15px;
    text-align: center;
}

.menu-list li a {
    text-decoration: none;
    color: white;
    font-size: 16px;
    font-weight: 500;
    padding: 10px 0;
    transition: color 0.3s ease;
}

.menu-list li a:hover {
    color: #ffcb47;
}

/* Responsive styles */
@media (max-width: 768px) {
    .nav-menu {
        display: none; /* Ẩn menu trên màn hình nhỏ */
        flex-direction: column;
        background-color: #004080;
        position: absolute;
        top: 70px; /* Điều chỉnh vị trí menu dropdown */
        right: 0;
        width: 100%;
        z-index: 999;
    }

    .nav-menu.active {
        display: flex; /* Hiển thị menu khi kích hoạt */
    }

    .menu-list {
        flex-direction: column;
        align-items: center;
    }

    .menu-list li {
        margin: 10px 0; /* Căn giữa các mục trong menu */
    }

    .hamburger {
        display: flex; /* Hiển thị hamburger trên màn hình nhỏ */
    }
}

    /********************************
            BLOG CONTAINER
    *********************************/
    .blog_container{
    width:100%;
    display:flex;
    align-items:top;
    background-color:#f1f1f1;
    }
    
    /*BLOG LEFT CONTENT*/
    .blog_content{
    padding:2rem;
    width:100%;
    }
    
    .blog_content .load-btn{
    display:block;
    width:150px;
    margin:5vh auto;
    }
    
    .left_content{
    display:flex;
    align-items:top;
    justify-content: space-between;
    flex-wrap:wrap;
    column-count: 2;
    gap: 20px 10px;
    flex:0 0 70%;
    }
    
    .right_content{
    flex:0 0 30%;
    }
    
    .blog_card{
    width:100%;
    flex:0 0 48.5%;
    overflow:hidden;
    background-color:var(--white);
    }
    
    .blog_card:nth-child(1){
    flex:0 0 100%;
    }
    
    .blog_card .figure{
    display:block;
    width:100%;
    height:200px;
    position:relative;
    overflow:hidden;
    }
    
    .blog_card:nth-child(1) .figure{
    height:300px;
    }
    
    .blog_card .figure img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:0.5s;
    }
    
    .blog_card .tag{
    padding:5px 10px;
    background-color:var(--yellow);
    color:var(--white);
    position:absolute;
    right:1%;
    top:3%;
    font-size:12px;
    }
    
    .blog_card section{
    padding:1rem;
    position:relative;
    background-color:var(--white);
    }
    
    .blog_card section .title{
    font-weight:600;
    font-size:18px;
    color:var(--dark);
    width:auto;
    }
    
    .blog_card section a:hover{
    color:var(--yellow);
    }
    
    .blog_card:hover > .figure img{
    transform:scale(1.1);
    }
    
    .share_icon{
    position:absolute;
    bottom:-30px;
    left:10px;
    background-color:var(--red);
    color:var(--white);
    display:flex;
    align-items:center;
    padding-right:5px;
    font-size:13px;
    cursor:pointer;
    transition:0.5s;
    }
    
    .share_icon .fa{
    padding:5px;
    background-color:var(--darkred);
    margin-right:10px;
    }
    
    .blog_card section img{
    width:30%;
    margin-right:20px;
    object-fit:cover;
    border:5px solid rgba(1,1,1,0.1);
    }
    
    .blog_card section img:nth-child(even){
    float:left;
    }
    
    .blog_card section img:nth-child(odd){
    float:right;
    }
    
    
    
    
    /*BLOG RIGHT CONTENT*/
    .columns{
    display:block;
    margin-bottom:4vh;
    background-color:var(--white);
    }
    
    .columns section{
    padding:1rem;
    }
    
    .columns .title{
    background-color:var(--yellow);
    color:var(--white);
    padding:1rem;
    text-align:left;
    width:100%;
    display:block;
    transition:0.2s;
    border-left:0px solid var(--dark);
    }
    
    .columns:hover > .title{
    border-left:5px solid var(--dark);
    }
    
    .columns .title a{
    float:right;
    }
    
    .columns .title a:hover{
    color:var(--dark);
    }
    
    .search form{
    width:100%;
    display:flex;
    align-items:center;
    }
    
    .search fieldset:nth-child(2){
    width:10%;
    }
    
    .search form input{
    border:1px solid rgba(1,1,1,0.1);
    padding:1rem;
    width:100%;
    font-weight:600;
    color:rgba(1,1,1,0.5);
    }
    
    .search .btn1{
    border:1px solid var(--yellow);
    border-radius:0;
    }
    
    
    
    /*BOOKS*/
    .books .cards {
    position: relative;
    width: 100%;
    height:46vh;
    overflow: hidden;
    border-radius: 5px;
    background-color:#f1f1f1;
    }
    
    .books .cards::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    z-index: 900;
    display: block;
    width: 100%;
    height: 100%;
    }
    
    .books .card_part {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 7;
    display: flex;
    align-items: center;
    width: 100%;
    height: 100%;
    background-size:100% 100%;
    background-position:center;
    transform: translateX( 700px );
    background-repeat:no-repeat;
    animation: opaqTransition 28s cubic-bezier(0, 0, 0, 0.97) infinite;
    background-color:#f1f1f1;
    }
    
    .books .card_part.card_part-two {
    z-index: 6;
    animation-delay: 7s;
    background-repeat:no-repeat;
    }
    
    .books .card_part.card_part-three {
    z-index: 5;
    animation-delay: 14s;
    background-repeat:no-repeat;
    }
    
    .books .card_part.card_part-four {
    z-index: 4;
    animation-delay: 21s;
    background-repeat:no-repeat;
    }
    
    @keyframes opaqTransition {
    3% { transform: translateX( 0 ); }
    25% { transform: translateX( 0 ); }
    28% { transform: translateX( -700px ); }
    100% { transform: translateX( -700px ); }
    }
    
    
    
    
    /*CATEGORIES*/
    .categories a{
    display:inline-block;
    padding:0.2rem 1rem;
    border-radius:40px;
    background-color:rgba(1,1,1,0.3);
    margin:5px 3px;
    font-size:12px;
    white-space:nowrap;
    color:var(--white);
    }
    
    .categories a:hover{
    background-color:var(--dark);
    }
    
    
    /*POSTS*/
    .posts a{
    display:flex;
    align-items:center;
    margin:0.4rem 0;
    }
    
    .posts a img{
    width:100px;
    margin-right:10px;
    }
    
    .posts a:hover > p{
    color:var(--black);
    }
    
    
    
    /*COMMENTS*/
    .comments{
    position:relative;
    overflow:hidden;
    max-height:60vh;
    }
    
    .marquee2 {
    position: relative;
    overflow:hidden;
    line-height:1.6em;
    }
    
    .marquee2 p{
    border-bottom:1px solid rgba(1,1,1,0.1);
    position:relative;
    padding:0.4rem 0;
    }
    
    .marquee2 p:before{
    content:"\f10d";
    font-family:"FontAwesome";
    margin-right:5px;
    position:relative;
    top:-5px;
    }
    
    @keyframes marquee1 {
    0% {
    top: 10%;
    }
    100% {
    top: -100%;
    }
    }
    
    
    /*SOCIAL MEDIA*/
    .social_icons{
    display:flex;
    align-items:center;
    justify-content:center;
    column-gap: 15px;
    background-color:transparent;
    }
    
    .social_icons .fa{
    padding:7px 13px;
    background-color:#f1f1f1;
    color:var(--white);
    transition:0.2s;
    }
    
    .social_icons a:hover > .fa{
    transform:scale(1.1);
    }
    
    .social_icons .fa-facebook{
    background-color:#3b5998;
    }
    
    .social_icons .fa-instagram{
    background-color:#fb3958;
    }
    
    .social_icons .fa-youtube{
    background-color:#c4302b;
    }
    
    .social_icons .fa-whatsapp{
    background-color:#25d366;
    }
    
    .social_icons .fa-telegram{
    background-color:#3399ff;
    }
    
    
    @media (max-width:1000px){
    .blog_container{
    flex-wrap:wrap;
    }
    .blog_content{
    padding:0;
    order:2;
    }
    .left_content{
    flex:0 0 100%;
    order:2;
    padding:1rem;
    }
    .right_content{
    flex:0 0 100%;
    order:1;
    padding:1rem;
    }
    .books,.posts, .comments, .categories{
    display:inline-block;
    width:47%;
    margin:1.3%;
    margin-bottom:0;
    vertical-align:top;
    height:63vh;
    }
    .posts{
    overflow-y:auto;
    }
    .right_content{
    flex:0 0 100%;
    }
    }
    
    @media (max-width:740px){
    .blog_card{
    flex:0 0 100%;
    }
    .posts, .comments, .books, .categories{
    width:100%;
    margin:0;
    height:auto;
    margin-bottom:4vh;
    }
    }
    
    
    
    
    
    
    /*REMOVE THIS*/
    .credits{
    position:fixed;
    right:0;
    bottom:2%;
    background-color:#1e1e1e;
    padding:0.5rem;
    font-size:12px;
    z-index:999;
    color:rgba(255,255,255,0.7);
    }
    
    .credits a{
    color:rgba(255,255,255,0.7);
    }
    
    .credits a:hover{
    color:white;
    }
    
    .credits .btn0{
    background-color:white;
    color:#000;
    padding:5px;
    border-radius:5px;
    border:0;
    display:block;
    margin:1vh auto;
    width:100px;
    text-align:Center;
    }
    
    .credits .btn0:hover{
    color:black;
    background-color:#b8bca7;
    }
    
    
    /* footer */
/*===== GOOGLE FONTS =====*/
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap");

/*===== VARIABLES CSS =====*/
:root{
  --header-height: 3rem;

  /*===== Colors =====*/
  --first-color: #3E0E12;
  --first-color-dark: #2F0A0D;
  --text-color: #524748;
  --first-color-light: #7B6F71;
  --first-color-lighten: #FBF9F9;

  /*===== Font and typography =====*/
  --body-font: 'Poppins', sans-serif;
  --biggest-font-size: 2.5rem;
  --h1-font-size: 1.5rem;
  --h2-font-size: 1.25rem;
  --h3-font-size: 1.125rem;
  --normal-font-size: .938rem;
  --small-font-size: .813rem;
  --smaller-font-size: .75rem;

  /*===== Font weight =====*/
  --font-medium: 500;
  --font-semi-bold: 600;
  --font-bold: 700;

  /*===== Margins =====*/
  --mb-1: .5rem;
  --mb-2: 1rem;
  --mb-3: 1.5rem;
  --mb-4: 2rem;
  --mb-5: 2.5rem;
  --mb-6: 3rem;

  /*===== z index =====*/
  --z-normal: 1;
  --z-tooltip: 10;
  --z-fixed: 100;
}
  
@media screen and (min-width: 768px){
  :root{
    --biggest-font-size: 4.5rem;
    --h1-font-size: 2.25rem;
    --h2-font-size: 1.5rem;
    --h3-font-size: 1.25rem;
    --normal-font-size: 1rem;
    --small-font-size: .875rem;
    --smaller-font-size: .813rem;
  }
}

/*===== BASE =====*/

h1,h2,h3,ul,p{
  margin: 0;
}

h2,h3{
  font-weight: var(--font-semi-bold);
}

ul{
  padding: 0;
  list-style: none;
}

a{
  text-decoration: none;
}

img{
  max-width: 100%;
  height: auto;
  display: block;
}

/*===== CLASS CSS =====*/
.section {
  padding: 4rem 0 2rem;
}

.section-title, .section-subtitle {
  text-align: center;
}

.section-title {
  font-size: var(--h1-font-size);
  color: var(--first-color);
  margin-bottom: var(--mb-3);
}

.section-subtitle {
  display: block;
  font-size: var(--smaller-font-size);
  font-weight: var(--font-semi-bold);
}


/*===== FOOTER =====*/
.footer {
  background-color: #5d7d9d;
  color: var(--first-color-lighten);
  text-align: center;
}

.footer__container {
  padding: 3rem 0;
}

.footer__title {
  font-size: var(--h1-font-size);
  margin-bottom: var(--mb-1);
  font-weight: var(--font-semi-bold);
}

.footer__description {
  margin-bottom: var(--mb-3);
}

.footer__social {
  margin-bottom: var(--mb-6);
}

.footer__link {
  font-size: 1.4rem;
  color: var(--first-color-lighten);
  margin: 0 var(--mb-1);
  transition: .3s;
}

.footer__link:hover {
  color: var(--first-color-light);
}

.footer__copy {
  font-size: var(--smaller-font-size);
  color: #dbbfbf;
}