@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@100;200;300;400;500;600;700;800;900&display=swap');

/* ================= RESET ================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    border: none;
    outline: none;
    scroll-behavior: smooth;
    font-family: 'Poppins', sans-serif;
}

/* ================= ROOT ================= */
:root {
    --bg-color: #0b1120;
    --second-bg-color: #111827;
    --card-bg: rgba(17, 24, 39, 0.75);
    --glass-border: rgba(255, 255, 255, 0.08);

    --text-color: #f9fafb;
    --muted-text-color: #cbd5e1;
    --dim-text-color: #9ca3af;

    --main-color: #facc15;
    --hover-color: #fde047;
    --active-color: #eab308;

    --border-color: #1f2933;
}

/* ================= BASE ================= */
html {
    font-size: 62.5%;
    overflow-x: hidden;
}

body {
    background: radial-gradient(circle at top, #111827, #020617);
    color: var(--text-color);
}

section {
    min-height: 100vh;
    padding: 10rem 9% 4rem;
}

/* ================= HEADER ================= */
.header {
    position: fixed;
    inset: 0 0 auto 0;
    height: 8rem;
    padding: 0 9%;
    background: rgba(2, 6, 23, 0.75);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    font-size: 2.6rem;
    font-weight: 600;
    color: var(--text-color);
}

.logo span {
    color: var(--main-color);
}

/* ================= NAVBAR ================= */
.navbar a {
    font-size: 1.6rem;
    color: var(--muted-text-color);
    margin-left: 3.5rem;
    padding: .6rem 1.4rem;
    border-radius: .8rem;
    transition: all .3s ease;
}

.navbar a:hover,
.navbar a.active {
    color: var(--main-color);
    background: rgba(250, 204, 21, 0.12);
}

#menu-icon {
    font-size: 3.4rem;
    color: var(--text-color);
    display: none;
}

/* ================= HOME ================= */
.home {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6rem;
}

.home-img {
    border-radius: 50%;
    border: 3px solid var(--main-color);
    box-shadow: 0 0 30px rgba(250, 204, 21, 10);
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-2rem); }
    100% { transform: translateY(0); }
}

.home-content h3 {
    font-size: 3rem;
}

.home-content h1 {
    font-size: 5.4rem;
    line-height: 1.25;
}

.home-content p {
    font-size: 1.6rem;
    margin: 2rem 0;
    color: var(--muted-text-color);
    line-height: 1.8;
}

/* ================= SOCIAL ================= */
.social-media a {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 4.2rem;
    height: 4.2rem;
    border: 2px solid var(--main-color);
    border-radius: 50%;
    color: var(--main-color);
    font-size: 2rem;
    margin-right: 1.4rem;
    transition: .3s ease;
}

.social-media a:hover {
    background: var(--main-color);
    color: #020617;
    box-shadow: 0 0 18px rgba(250, 204, 21, .6);
}

/* ================= BUTTON ================= */
.btn {
    display: inline-block;
    margin-top: 2.5rem;
    padding: 1.3rem 3.5rem;
    background: linear-gradient(135deg, #fde047, #eab308);
    color: #020617;
    border-radius: 999px;
    font-weight: 600;
    box-shadow: 0 12px 30px rgba(250, 204, 21, .35);
    transition: all .3s ease;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 45px rgba(250, 204, 21, .55);
}

.about
{
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6rem;
    font-size: 1.5rem;
    background: var(--second-bg-color);
}

.about-img img
{
    border-radius: 50%;
    border: 3px solid var(--main-color);
    box-shadow: 0 0 30px rgba(250, 204, 21, 10);
    animation: float 4s ease-in-out infinite
}

/* ================= HEADINGS ================= */
.heading {
    text-align: center;
    font-size: 4.8rem;
    margin-bottom: 6rem;
}

.heading span {
    color: var(--main-color);
}

/* ================= SKILLS ================= */
.services-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(26rem, 1fr));
    gap: 3rem;
}

.services-box {
    background: var(--card-bg);
    backdrop-filter: blur(14px);
    border-radius: 2rem;
    padding: 3rem;
    border: 1px solid var(--glass-border);
    position: relative;
    transition: .35s ease;
}

.services-box:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(250, 204, 21, .25);
}

.services-box i {
    font-size: 4.6rem;
    color: var(--main-color);
    margin-bottom: 1.2rem;
}

.services-box h3 {
    font-size: 2.2rem;
    margin-bottom: .6rem;
}

.services-box p {
    font-size: 1.4rem;
    color: var(--muted-text-color);
}

/* ===== Skill Bar ===== */
.skill-bar {
    width: 100%;
    height: .6rem;
    background: #1f2937;
    border-radius: 1rem;
    margin-top: 1.5rem;
    overflow: hidden;
}

.skill-bar span {
    display: block;
    height: 100%;
    width: 75%;
    background: linear-gradient(90deg, #fde047, #eab308);
}

/* ================= PROJECTS ================= */
.profile-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
    gap: 3rem;
}

.profile-box {
    position: relative;
    border-radius: 2rem;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0,0,0,.6);
}

.profile-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .6s ease;
}

.profile-layer {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(2,6,23,.4),
        rgba(250,204,21,.9)
    );
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transform: translateY(100%);
    transition: .5s ease;
    padding: 3rem;
    text-align: center;
}

.profile-box:hover img {
    transform: scale(1.12);
}

.profile-box:hover .profile-layer {
    transform: translateY(0);
}

.profile-layer h4 {
    font-size: 2.8rem;
    color: #020617;
}

.profile-layer p {
    font-size: 1.4rem;
    color: #1f2937;
    margin: 1.2rem 0;
}

/* ================= EXPERIENCE (TIMELINE) ================= */
.experience-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3.5rem;
    position: relative;
    padding-left: 4rem;
}

.experience-container::before {
    content: "";
    position: absolute;
    left: 1.2rem;
    top: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(#fde047, transparent);
}

.experience-box {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 2rem;
    padding: 3rem;
    position: relative;
    transition: .35s ease;
}

.experience-box::before {
    content: "";
    position: absolute;
    left: -3.3rem;
    top: 3rem;
    width: 1.4rem;
    height: 1.4rem;
    background: var(--main-color);
    border-radius: 50%;
    box-shadow: 0 0 15px rgba(250,204,21,.9);
}

.experience-box:hover {
    transform: translateX(10px);
    box-shadow: 0 30px 60px rgba(250,204,21,.25);
}

.experience-box h3 {
    font-size: 2.4rem;
}

.experience-box h4 {
    font-size: 1.5rem;
    color: var(--dim-text-color);
}

.research-container{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    justify-content: center;
    align-items: flex-start;
    gap: 3rem;
}
.research{
    background: radial-gradient(#111827, #020617);
}
.research-box{
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    background-color: var(--second-bg-color);
    text-align: justify;
    padding: 4rem 3rem 7rem;
    border-radius: 2rem;
    flex: 1 1 30rem;
    gap: 3rem;
}
.research-box h3{
    font-size: 2.4rem;
    /* margin-bottom: 2rem;
    padding: 3rem 2rem 4rem; */
}
.research-box:hover{
    transform: scale(1.02);
    box-shadow: 0 0 1rem var(--main-color);
    transition: .5sec ease;
    border-radius: 2rem;
}
.research-box p{
    font-size: 1.2rem;
    margin: 1rem 0 3rem;
    text-align: justify;
}
.contact h2{
    margin-bottom: 3rem;
    text-align: center;
}

.contact form{
    max-width: 70rem;
    margin: 1rem auto;
    text-align: center;
    margin-bottom: 3rem;
}

.contact form .input-box{
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.contact form .input-box input,
.contact form textarea{
    width: 100%;
    padding: 1.5rem;
    font-size: 1.6rem;
    color: var(--text-color);
    background: var(--second-bg-color);
    border-radius: .8rem;
    margin: .7rem 0;
}
.contact{
   background: radial-gradient(#111827, #020617);
}

.contact form .input-box input{
    width: 49%;
}

.contact form textarea{
    resize: none;
}

.btn{
    margin-top: 2rem;
    cursor: pointer;
}

.footer{
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    padding: 2rem 9%;
    background: var(--second-bg-color);
}

.footer-text{
    text-align: center;
    font-size: 1.6rem;
}

.footer-iconTop a
{
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: .8rem;
    background: var(--main-color);
    border-radius: .8rem;
}
.footer{
    background: var(--second-bg-color);
}

.footer-iconTop a i {
    font-size: 2.4rem;
    color: var(--second-bg-color);
}

.footer-iconTop a:hover{
    box-shadow: 0 0 1rem var(--main-color);
}

.footer p{
    text-align: center;
}

/* ================= RESPONSIVE ================= */
@media (max-width: 768px) {
    #menu-icon {
        display: block;
    }

    .navbar {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-color);
        display: none;
        flex-direction: column;
    }

    .navbar.active {
        display: flex;
    }

    .home {
        flex-direction: column;
        text-align: center;
    }
}