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

html {
    scroll-behavior: smooth;
}

body {
    background: #080800;
    color: #fff;
}

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

.container {
    padding: 10px 10%;
}

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

.logo {
    width: 140px;
}

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

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 18px;
    position: relative;
}

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--------------------------------------------  */

#about {
    padding: 80px 0;
    color: #ababab;
}

.row {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.about-col-1 {
    flex-basis: 35%;
}

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

.about-col-2 {
    flex-basis: 60%;
}

.sub-title {
    font-size: 60px;
    font-weight: 600;
    color: #fff;
}

.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;
}

.tab-contents ul li span {
    color: #ff004f;
    font-size: 14px;
}

.tab {
    display: inline-block;
    margin-left: 4em;
}

.tab-contents {
    display: none;
}

.tab-contents.active-tab {
    display: block;
}

/* ------------------------------------------services----------------------------------- */
#services {
    padding: 30px 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-right: 10px solid #000;
    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-color: #ff004f;
    transform: translateY(-10px);
}

.services-list div p {
    font-size: 18px;
}

/* ---------------------------------------PortFolio-------------------------------------------- */
#portfolio {
    padding: 50px 0;
}

.work-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    grid-gap: 40px;
    margin-top: 50px;
}

.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;
    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;
    text-align: center;
    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%;
}

.work div p {
    font-size: 16px;
}

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

.btn:hover {
    background: #ff004f;
}

/* ----------------------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:hover {
    color: #ff004f;
    transform: translateY(-5px);
}

.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 60px;
    font-size: 18px;
    margin-top: 20px;
    cursor: pointer;
}

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

.copyright i {
    color: #ff004f;
}

/* ------------------------------------- CSS For Small Screens -------------------------------------------------- */

nav .fas {
    display: none;
}

@media only screen and (max-width: 600px) {
    #header {
        background-image: url(./images/Vibhav-Phone.jpg);
    }

    .header-text {
        margin-top: 100%;
        font-size: 16px;
    }

    .header-text h1 {
        font-size: 30px;
    }

    nav .fas {
        display: block;
    }

    nav ul {
        background: #ff004f;
        position: fixed;
        top: 0;
        right: -200px;
        width: 200px;
        height: 100vh;
        padding-top: 50px;
        z-index: 2;
        transition: right 0.5s;
    }

    nav ul li {
        display: block;
        margin: 25px;
    }

    nav ul .fas {
        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 {
        margin-bottom: 14px;
    }

    .tab-links {
        font-size: 16px;
        margin-right: 20px;
    }

    .contact-left,
    .contact-right {
        flex-basis: 100%;
    }

    .copyright {
        font-size: 14px;
    }
}

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

.publication-preview {
    position: relative;
    width: 280px;
    cursor: pointer;
    margin: 20px;
    display: inline-block;
    vertical-align: top;
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease-in-out;
}

.publication-preview:hover {
    transform: scale(1.05);
}

.preview-image {
    width: 100%;
    height: auto;
    display: block;
}

.overlay-text {
    padding: 10px;
    font-weight: bold;
    font-size: 0.9rem;
    background-color: #f8f8f8;
    text-align: center;
}

.publications-section {
    padding: 40px 5% 70px 5%;
    background: #0d0d0f;
    min-height: 60vh;
}

.publications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
    margin-top: 40px;
    justify-items: center;
}

.pub-card {
    background: #181819;
    border-radius: 12px;
    box-shadow: 0 2px 16px rgba(255, 0, 79, 0.09), 0 1px 2px rgba(0, 0, 0, 0.09);
    overflow: hidden;
    padding-bottom: 12px;
    margin-left: 8px;
    transition: background 0.3s, transform 0.2s;
    border: 2px solid #ff004f;
    width: 98%;
    /* ensures spacing from left border */
    max-width: 330px;
    text-align: left;
}

.pub-card:hover {
    background: #210012;
    transform: translateY(-8px) scale(1.04);
    border-color: #ff004f;
}

.pub-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-bottom: 2px solid #ff004f;
    display: block;
    background: #000;
}

.pub-info {
    padding: 14px 16px 8px 16px;
    color: #fff;
}

.pub-info h3 {
    color: #ff004f;
    margin: 0 0 6px;
    font-size: 1.06rem;
    font-weight: 600;
}

.pub-info p {
    font-size: 0.96rem;
    color: #e3e3e3;
    line-height: 1.34;
    margin: 0;
}