*{
    margin: 0;
    padding: 0;
    font-family: poppins, sans-serif;
    box-sizing: border-box;
}

html{
    scroll-behavior: smooth;
}

body{
    background: #eae7e1;
    color: #b78f58;
}

#header{
    width: 100%;
    height: 100vh;
    background: url(images/background.jpeg);
    background-size: cover;
    background-position: center;
}

.container{
    padding: 10px 10%;
}

nav{
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.navbar-fixed-top{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    
    padding: 10px 10%;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}


.logo{
    width: 80px;
    height: 80px;
}

nav ul li{
    list-style: none;
    display: inline-block;
    margin: 10px 20px;

}

nav ul li a{
    text-decoration: none;
    color: #f01f07;
    font-size: 25px;
    font-weight: 600;
    transition: 0.3s ease;
}

/* Hover effect */
nav ul li a::after{
    content: '';
    width: 0%;
    height: 3px;
    background: #a70101;
    position: absolute;
    left: 0;
    bottom: -6px;
    transition: 0.5s;
}


.header-text{
    margin-top: 20%;
    font-size: 30px;
}
.header-text h1{
    font-size: 60px;
    color: #da580d;
    font-weight: 600;
    margin-top: 10px;
}
.header-text p{
    font-size: 18px;
    color: #060607;
    margin-top: 20px;
}
h1, h2, p{
    color: black;
}

/* -----------------------------------------about----------------------------------------------*/
#about{
    width: 100%;
    height: 100vh;
    padding: 80px 0;
    color: #fff;
}
.row{
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}
.about-col-1{
    flex-basis: 35%;
}
.about-col-1 img{
    width: 100%;
    border-radius: 10px;
}
.about-col-2{
    flex-basis: 60%;
    
}
.sub-title{
    font-size: 40px;
    font-weight: 600;
}

.tab-titles{
    display: flex;
    margin: 20px 0 40px;
}
.tab-links{
    margin-right: 50px;
    font-size: 22px;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    color: #1a3dc7;
}
.tab-links::after{
    content: '';
    width: 0%;
    height: 3px;
    background: #e90202;
    position: absolute;
    left: 0;
    bottom: -8px;
    transition: 0.5s;
}
.tab-links.active-link::after{
    width: 50%;
}
.tab-contents ul li{
    list-style: none;
    margin: 10px 0;
    color: #060607;
}
.tab-contents ul li span{
    color: #5f0ae0;
    font-size: 18px;
}
.tab-contents {
    display: none;
}
.tab-contents.active-tab{
    display: block;
}

/*----------------------------------------------publications-------------------------------------*/
#publications{
    margin-top: 200px;
    width: 100%;
    height: 100vh;
    padding: 80px 0;
    color: #ababab;
}
.row{
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.publications-col-1{
    flex-basis: 35%;
}
.publications-col-1 img{
    width: 100%;
    border-radius: 10px;
}
.publications-col-2{
    flex-basis: 60%;
    
}

.publications-col-1 ul li{
    list-style: none;
    margin: 10px 0;
    color: #060607;
}

/* ---------------------------------------------contact----------------------------------------------*/
#contact{
    width: 100%;
    height: 100vh;
    padding: 80px 0;
    color: #ababab;
}

.contact-left{
    flex-basis: 35%;
}
.contact-left p{
    margin-top: 30px;
}
.contact-left p i{
    margin-right: 15px;
    color: #ff004f;
    font-size: 25px;
}
.social-icons{
    margin-top: 30px;
}
.social-icons a{
    margin-right: 15px;
    text-decoration: none;
    font-size: 30px;
    margin-right: 15px;
    color: #4188df;
    display: inline-block;
    transition: transform 0.5s;
}
.social-icons a:hover{
    color: #ff004f;
    transform: translateY(-5px);
}
.btn.btn2{
    display: inline-block;
    background: #ff004f;
    padding: 8px 40px;
    font-size: 14px;
    margin-top: 20px;
    cursor: pointer;
}
.contact-right{
    flex-basis: 60%;
}
.content-right form{
    width: 100%;
}
form input, form textarea{
    width: 100%;
    border: 0;
    outline: none;
    background: #d8c0c0;
    padding: 15px;
    margin: 15px 0;
    color: #fff;
    font-size: 18px;
    border-radius: 6px;

}
form .btn2{
    padding: 14px 60px;
    font-size: 18px;
    margin-top: 20px;
    cursor: pointer;
}

.copyright{
    width: 100%;
    text-align: center;
    padding: 25px 0;
    background: #262626;
    font-weight: 300;
    margin-top: 20px;
}
.copyright p{
    color: #e5d6db;
    
}

/* ------------------------------------------Responsive Design for Different Screens--------------------*/

/*-------------------------CSS for small screens--------------------------------------*/

nav .fas{
    display: none;
}

@media only screen and (max-width: 600px){
    .container{
        padding: 10px 5%;
    }
    .about-col-1{
        flex-basis: 100%;
        margin-bottom: 30px;
    }
    .about-col-2{
        flex-basis: 100%;
        font-size: 14px;
    }
   

    .publications-col-1{
        flex-basis: 100%;
        margin-bottom: 30px;
    }
    .publications-col-2{
        flex-basis: 100%;
        font-size: 14px;
    }
    .tab-links{
        font-size: 18px;
    }
    .tab-links::after{
        height: 2px;
    }
    .tab-links.active-link::after{
        width: 100%;
    }
    .tab-contents ul li{
        font-size: 14px;
    }
    .tab-contents ul li span{
        font-size: 16px;
    }


    .contact-left{
        flex-basis: 100%;
        margin-bottom: 30px;
    }
    .contact-right{
        flex-basis: 100%;
    }
    .header-text{
        font-size: 13px;;
    }
    .header-text h1{
        font-size: 30px;
    }

    nav .fas{
        display: block;
        font-size: 25px;
    }
    nav ul{
        position: fixed;
        top: 0;
        right: -200px;
        background: #cfd0dd;
        width: 200px;
        height: 100vh;
        padding-top: 50px;
        z-index: 2;
        transition: right 0.5s;
    }
    nav ul li{
        display: block;
        margin: 25px;
        color: #d9d6e5;
    }
    nav ul .fas{
        position: absolute;
        top: 6px;
        left: 25px;
        cursor: pointer;
    }
    .sub-title{
        font-size: 30px;
    }
    .tab-links{
        font-size: 14px;
        margin-right: 20px;
    }
    .copyright{
        font-size: 12px;
    }
}
#msg{
    color: #1a3dc7;
    margin-top: -1px;
    display: block;
}


#video .container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh; /* Full viewport height for vertical centering */
}

#video .video-col-2 {
    display: flex;
    justify-content: center;
    align-items: center;
}

#video video {
    max-width: 100%;
    height: auto;
}