/* ===========================
   GOOGLE FONT & RESET
=========================== */

*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    scroll-behavior:smooth;
}

:root{

    --bg:#050816;
    --card:rgba(255,255,255,.06);
    --border:rgba(255,255,255,.12);

    --cyan:#00eaff;
    --blue:#4facfe;
    --purple:#8b5cf6;
    --pink:#d946ef;

    --text:#ffffff;
    --text2:#a6b2d9;

}

body{

    font-family:'Poppins',sans-serif;
    background:var(--bg);
    color:var(--text);
    overflow-x:hidden;
}

/* ===========================
BACKGROUND
=========================== */

#particles{

    position:fixed;
    inset:0;
    z-index:-3;

}

.bg-blur{

    position:fixed;
    width:500px;
    height:500px;
    border-radius:50%;
    filter:blur(120px);
    opacity:.35;
    z-index:-2;

}

.blur1{

    background:var(--cyan);
    top:-180px;
    right:-120px;

}

.blur2{

    background:var(--pink);
    left:-180px;
    bottom:-180px;

}

/* ===========================
HEADER
=========================== */

header{

    position:fixed;
    top:0;
    left:0;
    width:100%;
    display:flex;
    justify-content:space-between;
    align-items:center;

    padding:18px 8%;

    backdrop-filter:blur(20px);

    background:rgba(0,0,0,.25);

    border-bottom:1px solid rgba(255,255,255,.08);

    z-index:1000;

}

.logo{

    font-size:30px;

    font-weight:800;

    background:linear-gradient(90deg,var(--cyan),var(--pink));

    -webkit-background-clip:text;

    -webkit-text-fill-color:transparent;

}

nav{

    display:flex;

    gap:35px;

}

nav a{

    color:white;

    text-decoration:none;

    transition:.35s;

}

nav a:hover{

    color:var(--cyan);

}

.menu-btn{

    display:none;

    font-size:28px;

    cursor:pointer;

}

/* ===========================
HERO
=========================== */

.hero{

    min-height:100vh;

    display:grid;

    grid-template-columns:1fr 1fr;

    align-items:center;

    padding:120px 8% 60px;

    gap:70px;

}

.hero-badge{

    display:inline-flex;

    align-items:center;

    gap:10px;

    padding:10px 22px;

    border-radius:50px;

    background:rgba(0,234,255,.12);

    border:1px solid rgba(0,234,255,.35);

    margin-bottom:25px;

}

.hero h1{

    font-size:72px;

    line-height:1.05;

}

.hero h1 span{

    background:linear-gradient(90deg,var(--cyan),var(--pink));

    -webkit-background-clip:text;

    -webkit-text-fill-color:transparent;

}

.hero h2{

    margin-top:18px;

    color:var(--cyan);

    font-size:26px;

    min-height:40px;

}

.hero p{

    margin-top:30px;

    color:var(--text2);

    line-height:1.9;

    max-width:520px;

}

.hero-buttons{

    margin-top:40px;

    display:flex;

    flex-wrap:wrap;

    gap:18px;

}

/* ===========================
BUTTONS
=========================== */

.btn{

    text-decoration:none;

    padding:15px 30px;

    border-radius:50px;

    font-weight:600;

    transition:.35s;

}

.primary{

    background:linear-gradient(135deg,var(--cyan),var(--blue));

    color:#000;

}

.primary:hover{

    transform:translateY(-5px);

    box-shadow:0 0 25px rgba(0,234,255,.45);

}

.secondary{

    border:1px solid rgba(255,255,255,.15);

    background:rgba(255,255,255,.05);

    color:white;

}

.secondary:hover{

    border-color:var(--cyan);

}

/* ===========================
PROFILE
=========================== */

.hero-right{

    display:flex;

    justify-content:center;

}

.glass-photo{

    width:420px;

    height:420px;

    border-radius:40px;

    position:relative;

    background:rgba(255,255,255,.05);

    backdrop-filter:blur(20px);

    border:1px solid rgba(255,255,255,.08);

    overflow:hidden;

}

.glass-photo img{

    width:100%;

    height:100%;

    object-fit:cover;

}

.circle{

    position:absolute;

    width:320px;

    height:320px;

    /* background:linear-gradient(var(--cyan),var(--pink)); */

    border-radius:50%;

    filter:blur(70px);

    opacity:.4;

    left:50%;

    top:50%;

    transform:translate(-50%,-50%);

}

/* ===========================
GLASS CARD
=========================== */

.glass-card{

    background:rgba(255,255,255,.05);

    backdrop-filter:blur(18px);

    border:1px solid rgba(255,255,255,.08);

    border-radius:28px;

    padding:35px;

    transition:.4s;

}

.glass-card:hover{

    transform:translateY(-8px);

    border-color:rgba(0,234,255,.35);

    box-shadow:0 25px 50px rgba(0,0,0,.35);

}

section{

    padding:90px 8%;

}

.section-title{

    text-align:center;

    margin-bottom:60px;

}

.section-title h2{

    font-size:42px;

}

.section-title p{

    color:var(--text2);

    margin-top:10px;

}

/* ===========================
ABOUT
=========================== */

.about-grid{

    display:grid;

    grid-template-columns:repeat(2,1fr);

    gap:25px;

    margin-top:40px;

}

.about-box{

    background:rgba(255,255,255,.05);

    border-radius:20px;

    text-align:center;

    padding:25px;

}

.about-box i{

    font-size:34px;

    color:var(--cyan);

    margin-bottom:15px;

}

/* ===========================
TIMELINE
=========================== */

.timeline{
    position:relative;
    max-width:900px;
    margin:auto;
}

.timeline::before{
    content:"";
    position:absolute;
    left:20px;
    top:0;
    width:3px;
    height:100%;
    background:linear-gradient(var(--cyan),var(--pink));
}

.timeline-item{
    position:relative;
    margin-bottom:45px;
    padding-left:70px;
}

.timeline-item::before{
    content:"";
    position:absolute;
    left:10px;
    top:8px;
    width:22px;
    height:22px;
    border-radius:50%;
    background:var(--cyan);
    box-shadow:0 0 20px var(--cyan);
}

.timeline .year{
    color:var(--cyan);
    font-weight:600;
    margin-bottom:8px;
}

.timeline .content{
    background:rgba(255,255,255,.05);
    backdrop-filter:blur(18px);
    border:1px solid rgba(255,255,255,.08);
    border-radius:20px;
    padding:25px;
}

.timeline .content h3{
    margin-bottom:10px;
}

.timeline .content p{
    color:var(--text2);
    line-height:1.8;
}

/* ===========================
RESEARCH
=========================== */

.research-card{
    display:grid;
    grid-template-columns:120px 1fr;
    gap:30px;
    align-items:center;
}

.research-icon{
    display:flex;
    justify-content:center;
    align-items:center;
}

.research-icon i{
    width:90px;
    height:90px;
    border-radius:50%;
    display:flex;
    justify-content:center;
    align-items:center;
    background:linear-gradient(135deg,var(--cyan),var(--purple));
    color:#fff;
    font-size:38px;
    box-shadow:0 0 35px rgba(0,234,255,.4);
}

.research-content h3{
    font-size:28px;
    margin-bottom:10px;
}

.mentor{
    color:var(--cyan);
    display:block;
    margin-bottom:20px;
}

.research-content p{
    color:var(--text2);
    line-height:1.9;
}

.research-tags{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    margin-top:25px;
}

.research-tags span{
    padding:10px 18px;
    border-radius:50px;
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.08);
    transition:.3s;
}

.research-tags span:hover{
    background:rgba(0,234,255,.12);
    border-color:var(--cyan);
}

/* ===========================
SKILLS
=========================== */

.skills-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:30px;
}

.skill-card h3{
    margin-bottom:18px;
}

.progress{
    width:100%;
    height:10px;
    background:rgba(255,255,255,.08);
    border-radius:50px;
    overflow:hidden;
}

.progress-bar{
    height:100%;
    border-radius:50px;
    background:linear-gradient(90deg,var(--cyan),var(--pink));
    animation:grow 2s ease;
}

@keyframes grow{
    from{
        width:0;
    }
}

/* ===========================
PUBLICATION
=========================== */

.publication{
    text-align:center;
}

.publication h2{
    color:var(--cyan);
    margin-bottom:15px;
}

.publication h3{
    font-size:28px;
    margin-bottom:20px;
    line-height:1.4;
}

.publication p{
    color:var(--text2);
}

/* ===========================
ACHIEVEMENTS
=========================== */

.achievement-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:30px;
}

.achievement{
    text-align:center;
}

.achievement i{
    font-size:50px;
    color:#ffd700;
    margin-bottom:20px;
}

.achievement h3{
    margin-bottom:10px;
}

.achievement p{
    color:var(--text2);
}

/* ===========================
CONTACT
=========================== */

.contact-card{
    display:flex;
    justify-content:center;
    gap:25px;
    flex-wrap:wrap;
}

.contact-card a{
    color:#fff;
    text-decoration:none;
    padding:16px 28px;
    border-radius:50px;
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.08);
    transition:.3s;
}

.contact-card a:hover{
    background:linear-gradient(135deg,var(--cyan),var(--pink));
    color:#000;
}

.contact-card i{
    margin-right:8px;
}

/* ===========================
FOOTER
=========================== */

footer{
    padding:50px 8%;
    text-align:center;
    border-top:1px solid rgba(255,255,255,.08);
}

footer h2{
    margin-bottom:10px;
}

footer p{
    color:var(--text2);
}

/* ===========================
BACK TO TOP
=========================== */

.top-btn{
    position:fixed;
    right:25px;
    bottom:25px;
    width:55px;
    height:55px;
    border:none;
    border-radius:50%;
    background:linear-gradient(135deg,var(--cyan),var(--pink));
    color:#fff;
    cursor:pointer;
    font-size:20px;
    display:none;
    box-shadow:0 0 20px rgba(0,234,255,.5);
    z-index:1000;
}

.top-btn.show{
    display:block;
}

/* ===========================
MOBILE RESPONSIVE
=========================== */

@media(max-width:992px){

.hero{
    grid-template-columns:1fr;
    text-align:center;
}

.hero p{
    margin:auto;
    margin-top:20px;
}

.hero-buttons{
    justify-content:center;
}

.glass-photo{
    width:320px;
    height:320px;
}

.skills-grid,
.achievement-grid{
    grid-template-columns:1fr;
}

.research-card{
    grid-template-columns:1fr;
    text-align:center;
}

.timeline::before{
    left:12px;
}

.timeline-item{
    padding-left:45px;
}

}

@media(max-width:768px){

header{
    padding:18px 6%;
}

nav{
    position:fixed;
    top:80px;
    right:-100%;
    width:270px;
    height:calc(100vh - 80px);
    background:#081122;
    display:flex;
    flex-direction:column;
    padding:35px;
    transition:.4s;
}

nav.active{
    right:0;
}

.menu-btn{
    display:block;
}

.hero{
    padding-top:120px;
}

.hero h1{
    font-size:52px;
}

.hero h2{
    font-size:22px;
}

.section-title h2{
    font-size:34px;
}

.about-grid{
    grid-template-columns:1fr;
}

.glass-card{
    padding:25px;
}

.contact-card{
    flex-direction:column;
}

}

@media(max-width:480px){

.hero h1{
    font-size:42px;
}

.hero h2{
    font-size:20px;
}

.btn{
    width:100%;
    text-align:center;
}

.glass-photo{
    width:260px;
    height:260px;
}

section{
    padding:70px 6%;
}
}





@media(max-width:300px){

.hero h1{
    font-size:42px;
}

.hero h2{
    font-size:20px;
}

.btn{
    width:100%;
    text-align:center;
}

.glass-photo{
    width:260px;
    height:260px;
}
.glass-photo img{
    width:100%;
    height:100%;
    object-fit:cover;
}
section{
    padding:70px 6%;
}

}