/* main page */
*{
        margin: 0;
        padding: 0;
        font-family: 'Poppins', sans-serif;
        box-sizing: border-box;
    }
    html{
        scroll-behavior: smooth;
    }
    body {
        background: #080808;
        color: white;
    }
    #header {
        width: 100%;
        height: 100vh;
        background-image: url(images/main_image.jpg);
        background-size: cover;
        background-position: center;
        background-attachment: fixed;
    }
    .container {
        padding: 10px 10% 10%;
    }
    nav{
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
    }
    .logo{
        width: 140px;
        height: 80px;
        object-fit: contain;
        transition: all 0.3s ease;
    }

    .logo:hover{
        transform: scale(1.1);
    }
    /* for alligning all the intems of unorderd list into a single line */
    nav ul li {
        display:inline-block;
        list-style: none;
        margin: 10px 20px;
    }
    /* for removing underline for the list items */
    nav ul li a {
        color: #fff;
        text-decoration: none;
        font-size: 18px;
        position: relative;
    }
    /* making a underline for the elements of a list*/
    nav ul li a::after{
        content: '';
        width: 0;
        height: 3px;
        background: #ff004f;
        position: absolute;
        left: 0;
        bottom: -6px;
        transition: 0.5s;
    }
    nav ul li a:hover::after{
        width: 100%;
    }

    .header-text {
        margin-top: 20%;
        font-size: 30px;
    }

    .header-text h1{
        font-size: 60px;
        margin-top: 20px;
    }

    .header-text h1 span{
        color: #ff004f;
    }

/* --------------About session----------- */
#about{
    padding: 80px 0;
    color: #ababab;
}
.row{
    display: flex; /*to get the content side by side*/
    justify-content: space-between;
    flex-wrap: wrap;
}

.about-col-1{
    flex-basis: 35%; /*the width of the column will be 35 %*/
}

.about-col-1 img{
    width: 100%;
    border-radius: 15px;
}

.about-col-2{
    flex-basis: 60% ;/*the width of the column will be 65% so the left gap will be 5 %*/
}

.sub-title{
    font-size: 60px;
    font-weight: 600;
    color: white;
}
.tab-titles{
    display: flex;
    margin: 20px 0 40px;
}
.tab-links{
    margin-right: 50px;
    font-size: 18px;
    font-weight: 500;
    cursor: pointer;
    position: relative;
}
.tab-links::after{
    content: '';
    width: 0;
    height: 3px;
    background: #ff004f;
    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; /*10px from top and bottom left right 0px*/
}
.tab-contents ul li span{
    color: #b54769;
    font-size: 14px;
}
.tab-contents{
    display: none;
}
.tab-contents.active-tab{
    display:block;
}

/* ----------services--------------- */
#services{
    padding: 0px 0;
}
.services-list{
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
    grid-gap: 40px;
    margin-top: 50px;
}

.services-list div{
    background: #262626;
    padding: 40px;
    font-size: 13px;
    font-weight: 300;
    border-radius: 10px;
    transition: background 0.5s,transform 0.5s;
}
.services-list div i{
    font-size: 50px;
    margin-bottom: 30px;
}
.services-list div h2{
    font-size: 30px;
    font-weight: 500;
    margin-bottom: 15px;
}
.services-list div a{
    text-decoration: none;
    color: #fff;
    font-size: 12px;
    margin-top: 20px;
    display: inline-block;
}
.services-list div:hover{
    background: #ff004f;
    transform: translateY(-10px);
}

/* ---------------------projects------------------------ */

.work-list{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-gap: 40px;
    margin-top: 50px;
}

.displaying-none{
    display: none;
}

.work{
    border-radius: 10px;
    position: relative;
    overflow: hidden;
}
.work img{
    width: 100%;
    border-radius: 10px;
    display: block;
    transition: transform 0.5s;
}
.layer{
    width: 100%;
    height: 0%; /*made height to zero so that all the styles will be intitally hidden(try making it 100% for better understanding)*/
    background: linear-gradient(rgba(0,0,0,0.6),#ff004f);
    border-radius: 10px;
    position: absolute;
    left: 0;
    bottom: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 40px;
    font-size: 14px;
    transition: height 0.5s;
}
.layer h3{
    font-weight: 500;
    margin-bottom: 20px;
}
.layer a{
    margin-top: 20px;
    color: #ff004f;
    text-decoration: none;
    font-size: 18px;
    line-height: 60px;
    background: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    text-align: center;
}
.work:hover img{
    transform: scale(1.1);
}
.work:hover .layer{
    height: 100%;
}
.btn{
    display: block;
    margin: 50px auto;
    width: fit-content;
    border: 1px solid #ff004f;
    padding: 14px 50px;
    border-radius: 6px;
    text-decoration: none;
    color: white;
    transform: background 0.5s;
}
.btn:hover{
    background: #ff004f;
}

/* --------------publications--------------- */
.publications{
    padding: 90px 0px;
}

.publication-list{
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
    grid-gap: 40px;
    margin-top: 50px;
}
.publication-work {
    /* width: 400px;
    height: 600px;   */
    border-radius: 10px;
    position: relative;
    overflow: hidden;
}

.publication-work img {
    object-fit: cover;
    width: 100%;
    border-radius: 10px;
    display: block;
    transition: transform 0.5s;
}

.publication-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    background-color: rgba(0, 0, 0, 0.7);
    transition: opacity 0.5s;
}

.publication-work:hover .publication-overlay {
    opacity: 1;
}

.publication-content {
    text-align: center;
    padding: 20px;
    color: #fff;
}

.publication-content h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.publication-content p {
    font-size: 14px;
    margin-bottom: 20px;
}

.publication-content a {
    color: #ff004f;
    text-decoration: none;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.publication-content a i {
    margin-right: 5px;  
}

  /* -------------certificate-------- */

#certificates {
    padding: 80px 0;
    background-color: #080808;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.displaying-none{
    display: none;
}

.certificate-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-gap: 40px;
    margin-top: 50px;
}

.certificate {
    border-radius: 10px;
    height: 450px;
    position: relative;
    overflow: hidden;
}

.certificate img {
    width: 100%;
    border-radius: 10px;
    display: block;
    transition: transform 0.5s;
}

.layer {
    width: 100%;
    height: 0%;
    background: linear-gradient(rgba(0, 0, 0, 0.6), #ff004f);
    border-radius: 10px;
    position: absolute;
    left: 0;
    bottom: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 40px;
    font-size: 14px;
    transition: height 0.5s;
}

.layer h3 {
    font-weight: 500;
    margin-bottom: 20px;
    color: #fff;
}

.layer p {
    color: #fff;
}

.layer a {
    margin-top: 20px;
    color: #ff004f;
    text-decoration: none;
    font-size: 18px;
    line-height: 60px;
    background: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    text-align: center;
}

.certificate:hover img {
    transform: scale(1.1);
}

.certificate:hover .layer {
    height: 100%;
}

.btn {
    display: block;
    margin: 50px auto;
    width: fit-content;
    border: 1px solid #ff004f;
    padding: 14px 50px;
    border-radius: 6px;
    text-decoration: none;
    color: white;
    background-color: #ff004f;
    transition: background-color 0.5s;
    cursor: pointer;
}

.btn:hover {
    background-color: #e60046;
}



/* -------------contact------------ */
.contact-left{
    flex-basis: 35%;
}
.contact-right{
    flex-basis: 60%;
}
.contact-left p{
    margin-top: 30px;
}
.contact-left p i{
    color: #ff004f;
    margin-right: 15px;
    font-size: 25px;
}
.social-icons{
    margin-top: 30px;
}
.social-icons a{
    text-decoration: none;
    font-size: 30px;
    margin-right: 15px;
    color: #ababab;
    display: inline-block;
    transition: transform 0.5s;
}
.social-icons a img{
    width: 40px;
    height: 40px;
    margin-left: -12px;
}
.social-icons a:hover{
    border-color: #ff004f;
    transform: translateY(-5px);/*to move the icon a bit up*/
}
.btn.btn2{
    display: inline-block;
    background: #ff004f;
}
.contact-right form{
    width: 100%;
}
form input, form textarea{
    width: 100%;
    border: 0;
    outline: none;
    background: #262626;
    padding: 15px;
    margin: 15px 0;
    color: #fff;
    font-size: 18px;
    border-radius: 6px;
}
form .btn2{
    padding: 14px 16px;
    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 i{
    color: #ff004f;
}


/* icon navigation */

.page-navigation {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50px;
    padding: 8px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.3);
}
    
.page-navigation i {
    margin: 5px 0;
    color: #ff004f;
    font-size: 28px;
    text-decoration: none;
    cursor: pointer;
    transition: color 0.3s, transform 0.3s;
}
    
.page-navigation i.menu-icon {
    font-size: 32px;
    cursor: pointer;
    transition: color 0.3s, transform 0.3s;
}
    
.page-navigation i.close-icon {
    font-size: 32px;
    cursor: pointer;
    transform: rotate(45deg);
    transition: color 0.3s, transform 0.3s;
}
    
.page-navigation i:hover {
    color: #fff;
    transform: scale(1.1);
}
    
.page-navigation i.menu-icon:hover,
.page-navigation i.close-icon:hover {
    color: #fff;
}
    
.hidden-icons {
    display: none;
    position: relative;
    bottom: 0;
    right: 0;
    opacity: 0;
    transform: translateY(100%);
    transition: opacity 0.5s, transform 0.5s;
}
    
.page-navigation.open .hidden-icons {
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 1;
    transform: translateY(0);
}
    
.hidden-icons i {
    font-size: 24px;
    margin: 5px 0;
    color: #ff004f;
    cursor: pointer;
    transition: transform 0.3s, opacity 0.3s, color 0.3s; /* Added color transition */
}
    
.hidden-icons i.menu-icon {
    font-size: 28px;
    cursor: pointer;
    transition: color 0.3s;
}
    
.hidden-icons i:hover {
    color: #fff;
    transform: scale(1.1);
    opacity: 1;
}
    
.hidden-icons i.menu-icon:hover {
    color: #fff;
}
    
.fa-times::before {
    color: white;
}

/* ---------css for small screen----------- */
nav .fa-solid{
    display: none;
}
@media only screen and (max-width: 600px){  
    .logo{
        margin-top: 10px;
    }
    #header{
        background-image: url(images/phone-background.jpg);
    }
    .header-text{
        margin-top: 10%;
        font-size: 35px;
    }
    .header-text h1{
        font-size: 35px;
    }
    .header-text span{
        font-size: 40px;
    }
    nav .fa-solid{
        display: block;
        font-size: 25px;
    }
    nav ul{
        background: #ff004f;
        position: fixed;
        top: 0;
        right: -200px;/*to be hidden by default*/
        width: 200px;
        height: 100vh;
        padding-top: 50px;
        z-index: 2;
        transition: right 0.5s;
    }
    nav ul li{
        display: block;
        margin: 25px;
    }
    nav ul .fa-solid{
        position: absolute;
        top: 25px;
        left: 25px;
        cursor: pointer;
    }
    .sub-title{
        font-size: 40px;
    }
    .about-col-1,.about-col-2{
        flex-basis: 100%;
    }
    .about-col-1{
        margin-bottom: 30px;
    }
    .about-col-2{
        font-size: 14px;
    }
    .tab-links{
        font-size: 16px;
        margin-right: 20px;
    }
    .contact-left,.contact-right{
        flex-basis: 100%;
    }
    .copyright{
        font-size: 14px;
    }
    .certificate-list,.work-list{
        grid-template-columns: repeat(1, 1fr); /* Single column for mobile devices */
    }
}

#msg{
    color: #61b752;
    margin-top: -40px;
    display: block;
}