/* =====================================================
GLOBAL RESET
===================================================== */

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

html{
    scroll-behavior:smooth;
}

body{

    font-family:'Poppins',sans-serif;

    background:#08131f;

    color:#ffffff;

    line-height:1.7;

}

img{

    max-width:100%;

    display:block;

}

a{

    text-decoration:none;

}

section{

    padding:60px 0;

}

/* =====================================================
GLOBAL CONTAINER
===================================================== */

.container{

    width:90%;

    max-width:1200px;

    margin:auto;

}

/* =====================================================
NAVIGATION
===================================================== */

.navbar{

    position:fixed;

    top:0;

    left:0;

    width:100%;

    background:rgba(8,19,31,.95);

    backdrop-filter:blur(10px);

    z-index:999;

}

.navbar .container{

    display:flex;

    justify-content:space-between;

    align-items:center;

    height:80px;

}

.logo{

    font-size:24px;

    font-weight:700;

    color:white;

}

.nav-links{

    display:flex;

    gap:35px;

    list-style:none;

}

.nav-links a{

    color:white;

    font-weight:500;

    transition:.3s;

}

.nav-links a:hover{

    color:#68d391;

}

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

.hero{

    height:100vh;

    background:url("../images/hero.png") center/cover no-repeat;

    position:relative;

    display:flex;

    align-items:center;

}

.overlay{

    position:absolute;

    inset:0;

    background:rgba(0,0,0,.55);

}

.hero-content{

    position:relative;

    z-index:2;

    max-width:750px;

    color:white;

}


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

.hero h1{

    font-size:64px;

    font-weight:700;

    margin-bottom:20px;

    color:#ffffff;

}

.hero-role{

    font-size:24px;

    font-weight:500;

    color:#7be495;

    margin-bottom:20px;

    letter-spacing:0.5px;

}

.hero-description{

    font-size:18px;

    line-height:1.9;

    color:#e4e4e4;

    max-width:720px;

    margin-bottom:40px;

}



.hero-buttons{

    display:flex;

    gap:20px;

}

.btn{

    background:#2f855a;

    color:white;

    padding:15px 35px;

    border-radius:8px;

    transition:.3s;

}

.btn:hover{

    background:#38a169;

}

.btn-outline{

    border:2px solid white;

    color:white;

    padding:15px 35px;

    border-radius:8px;

    transition:.3s;

}

.btn-outline:hover{

    background:white;

    color:#08131f;

}

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

.about{

    background:#08131f;

}

.about-grid{

    display:grid;

    grid-template-columns:320px 1fr;

    gap:60px;

    align-items:center;

}

.about-image{

    display:flex;

    justify-content:center;

}

.about-image img{

    width:240px;

    height:240px;

    object-fit:cover;

    border-radius:50%;

    border:5px solid #173247;

    box-shadow:0 15px 35px rgba(0,0,0,.35);

}

.about-content h2{

    font-size:40px;

    margin-bottom:25px;

    color:white;

}

.about-content p{

    font-size:18px;

    color:#d5d5d5;

    margin-bottom:20px;

    text-align:justify;

}

.about-content strong{

    color:#7be495;

}

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

#research{

    background:#0d1826;

}

.card-grid{

    display:grid;

    grid-template-columns:repeat(auto-fit,minmax(300px,1fr));

    gap:30px;

    margin-top:40px;

}

.card{

    background:#132436;

    padding:35px;

    border-radius:18px;

    transition:.35s;

    border:1px solid rgba(255,255,255,.05);

}

.card:hover{

    transform:translateY(-10px);

    background:#173247;

    box-shadow:0 15px 35px rgba(0,0,0,.3);

}

.card-icon{

    font-size:42px;

    margin-bottom:20px;

}

.card h3{

    margin-bottom:15px;

    color:#7be495;

    font-size:22px;

}

.card p{

    color:#d4d4d4;

    line-height:1.8;

}

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

#projects{

    background:#08131f;

    padding:90px 0;

}

 .portfolio-card{

    max-width:1200px;

    margin:60px auto 0;

    background:#13283b;

    border-radius:20px;

    overflow:hidden;

    display:grid;

    grid-template-columns:42% 58%;

    box-shadow:0 20px 45px rgba(0,0,0,.30);

}

.portfolio-image{

    height:430px;

    display:flex;

    justify-content:center;

    align-items:center;

    background:#13283b;

    overflow:hidden;

}

.portfolio-image img{

    width:90%;

    height:90%;

    object-fit:contain;

    object-position:center;

    display:block;

    border-radius:10px;

}

.portfolio-content{

    padding:45px;

    display:flex;

    flex-direction:column;

    justify-content:center;

}

.portfolio-content h3{

    font-size:34px;

    margin-bottom:20px;

    color:#ffffff;

}

.portfolio-content p{

    color:#d7d7d7;

    line-height:1.8;

    margin-bottom:25px;

}

.project-tools{

    display:flex;

    flex-wrap:wrap;

    gap:12px;

    margin-bottom:35px;

}

.project-tools span{

    background:#20425c;

    color:#7be495;

    padding:8px 16px;

    border-radius:30px;

    font-size:14px;

    font-weight:500;

}

.portfolio-buttons{

    display:flex;

    gap:18px;

    margin-bottom:35px;

}

.portfolio-navigation{

    display:flex;

    justify-content:space-between;

    align-items:center;

    margin-top:15px;

}

.portfolio-navigation button{

    background:#2f855a;

    color:white;

    border:none;

    padding:12px 24px;

    border-radius:8px;

    cursor:pointer;

    font-size:15px;

    transition:.3s;

}

.portfolio-navigation button:hover{

    background:#38a169;

}

#project-counter{

    color:#7be495;

    font-weight:600;

} 

/* =====================================================
PROJECT BUTTON
===================================================== */

.project-btn{

display:inline-block;

margin-top:10px;

padding:12px 28px;

background:#2f855a;

color:white;

border-radius:8px;

font-weight:600;

transition:.3s;

}

.project-btn:hover{

background:#38a169;

transform:translateY(-2px);

}

.project-tags{

display:flex;

flex-wrap:wrap;

gap:10px;

margin-bottom:20px;

}

.project-tags span{

background:#173247;

padding:8px 14px;

border-radius:30px;

font-size:13px;

}

.project-status{

display:inline-block;

padding:6px 14px;

border-radius:20px;

font-size:12px;

font-weight:600;

}

.completed{

background:#2f855a;

}

.ongoing{

background:#2563eb;

}

.future{

background:#d97706;

}

/* =====================================================
TECHNICAL EXPERTISE
===================================================== */

#skills{

background:#0d1826;

}

 .expertise-grid{

    display:grid;

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

    gap:30px;

    margin-top:50px;

}



.expertise-card{

background:#132436;

padding:35px;

border-radius:18px;

transition:.35s;

border:1px solid rgba(255,255,255,.05);

}

.expertise-card:hover{

transform:translateY(-10px);

background:#183247;

box-shadow:0 18px 35px rgba(0,0,0,.30);

}

.expertise-card h3{

font-size:24px;

margin-bottom:20px;

color:#7be495;

}

.expertise-card ul{

list-style:none;

padding:0;

}

.expertise-card li{

padding:12px 0;

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

color:#dddddd;

font-size:16px;

}

.expertise-card li:last-child{

border-bottom:none;

}

/* =====================================================
RESPONSIVE DESIGN
===================================================== */

@media (max-width:900px){

    .expertise-grid{

        grid-template-columns:1fr;

    }

}


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

#experience{

    background:#0d1b2a;

    padding:90px 0;

}

 .timeline{

    position:relative;

    width:100%;

    margin-top:60px;

}

.timeline::before{

    content:"";

    position:absolute;

    left:22px;

    top:0;

    width:3px;

    height:100%;

    background:#2f855a;

}

.timeline-item{

    position:relative;

    padding-left:70px;

    margin-bottom:60px;

}

.timeline-dot{

    position:absolute;

    left:12px;

    top:8px;

    width:22px;

    height:22px;

    border-radius:50%;

    background:#2f855a;

    border:4px solid #08131f;

}

.timeline-content{

    background:#13283b;

    padding:28px;

    border-radius:16px;

    box-shadow:0 10px 30px rgba(0,0,0,.25);

    transition:.35s;

}

.timeline-content:hover{

    transform:translateY(-6px);

}

.timeline-year{

    color:#68d391;

    font-size:15px;

    font-weight:600;

}

.timeline-content h3{

    margin-top:10px;

    margin-bottom:6px;

    font-size:24px;

}

.timeline-content h4{

    color:#7be495;

    margin-bottom:18px;

    font-weight:500;

}

.timeline-content p{

    color:#d8d8d8;

    line-height:1.8;

}

 /* =====================================================
SELECTED WORK WITHIN RESEARCH EXPERIENCE
===================================================== */

.selected-work{

    margin-top:35px;
     
    padding:25px;

    background:#0d1b2a;

    border-left:4px solid #2f855a;

    border-radius:12px;

}

.selected-work h4{

    color:#68d391;

    font-size:15px;

    font-weight:600;

    margin-bottom:10px;

}

.selected-work h3{

    font-size:22px;

    margin-bottom:12px;

    color:#ffffff;

}

.selected-work p{

    color:#d6d6d6;

    line-height:1.8;

    margin-bottom:0;

}


/* =====================================================
EMBEDDED INTERACTIVE MAP
===================================================== */

.embedded-map{

    width:100%;

    margin-top:25px;

    display:flex;

    justify-content:center;

    overflow:hidden;

    border-radius:12px;

}

.embedded-map iframe{

    width:750px;

    height:400px;

    border:none;

    border-radius:10px;

    display:block;

}


/* =====================================================
ESIIL SELECTED WORK SLIDER NAVIGATION
===================================================== */

.selected-work-navigation{

    display:flex;

    justify-content:space-between;

    align-items:center;

    margin-top:15px;

}


.selected-work-navigation button{

    background:#2f855a;

    color:#ffffff;

    border:none;

    padding:12px 22px;

    border-radius:8px;

    cursor:pointer;

    font-size:15px;

    transition:.3s;

}


.selected-work-navigation button:hover{

    background:#38a169;

}


#esiil-counter{

    color:#68d391;

    font-weight:600;

}


/* =====================================================
ACHIEVEMENTS, AWARDS & HONOURS
===================================================== */

#awards{

    background:#08131f;

    padding:100px 0;

}

.awards-grid{

    display:grid;

    grid-template-columns:repeat(auto-fit,minmax(500px,1fr));

    gap:30px;

    margin-top:60px;

}

.award-card{

    background:#13283b;

    border-radius:18px;

    padding:30px;

    display:flex;

    gap:25px;

    align-items:flex-start;

    transition:.35s;

    border:1px solid rgba(255,255,255,.05);

}

.award-card:hover{

    transform:translateY(-8px);

    box-shadow:0 18px 35px rgba(0,0,0,.35);

    border-color:#68d391;

}

.award-icon{

    width:70px;

    height:70px;

    border-radius:50%;

    background:#20425c;

    display:flex;

    justify-content:center;

    align-items:center;

    font-size:32px;

    flex-shrink:0;

}

.award-content{

    flex:1;

}

.award-content h3{

    font-size:24px;

    margin-bottom:8px;

    color:#ffffff;

}

.award-content h4{

    color:#68d391;

    font-size:16px;

    font-weight:500;

    margin-bottom:15px;

}

.award-content p{

    color:#d6d6d6;

    line-height:1.8;

    margin-bottom:18px;

}

.award-year{

    display:inline-block;

    background:#2f855a;

    color:#fff;

    padding:8px 18px;

    border-radius:30px;

    font-size:14px;

    font-weight:600;

}

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

footer{

    background:#06111c;

    padding:100px 0 40px;

    text-align:center;

}

footer h2{

    font-size:40px;

    margin-bottom:20px;

    color:#ffffff;

}

.footer-text{

    max-width:700px;

    margin:0 auto 60px;

    color:#cfcfcf;

    line-height:1.8;

}

.contact-grid{

    display:grid;

    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));

    gap:25px;

    margin-bottom:60px;

}

.contact-card{

    background:#13283b;

    padding:30px;

    border-radius:18px;

    transition:.35s;

    border:1px solid rgba(255,255,255,.05);

}

.contact-card:hover{

    transform:translateY(-8px);

    border-color:#68d391;

    box-shadow:0 18px 35px rgba(0,0,0,.30);

}

.contact-card h3{

    font-size:22px;

    margin-bottom:15px;

    color:#7be495;

}

.contact-card a{

    color:#ffffff;

    word-break:break-word;

    transition:.3s;

}

.contact-card a:hover{

    color:#7be495;

}

.contact-card p{

    color:#d6d6d6;

}

footer hr{

    border:none;

    height:1px;

    background:rgba(255,255,255,.08);

    margin:40px 0 30px;

}

.copyright{

    color:#9ca3af;

    font-size:15px;

    line-height:1.8;

}


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

@media(max-width:768px){

    .awards-grid{

        grid-template-columns:1fr;

    }

    .award-card{

        flex-direction:column;

        text-align:center;

        align-items:center;

    }

.contact-grid{

    grid-template-columns:1fr;

    }

footer{

    padding:80px 0 30px;

    }
    
}




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

@media(max-width:900px){

.portfolio-card{

grid-template-columns:1fr;

}

.portfolio-image{

height:320px;

}

.portfolio-content{

padding:30px;

}

.portfolio-content h3{

font-size:28px;

}

.portfolio-buttons{

flex-direction:column;

}

} 


/* =====================================================
MOBILE LAYOUT FIX
===================================================== */

@media (max-width: 768px){

    /* Prevent horizontal overflow */
    html,
    body{

        width:100%;

        overflow-x:hidden;

    }

    /* General container */

    .container{

        width:100%;

        max-width:100%;

        padding-left:20px;

        padding-right:20px;

    }


    /* =========================
       NAVIGATION
    ========================= */

    .navbar .container{

        display:flex;

        align-items:center;

        justify-content:space-between;

    }

    .logo{

        font-size:16px;

        max-width:120px;

    }

    .nav-links{

        gap:12px;

    }

    .nav-links a{

        font-size:10px;

    }


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

    .hero{

        min-height:650px;

    }

    .hero-content{

        padding-top:80px;

        text-align:left;

    }

    .hero h1{

        font-size:42px;

        line-height:1.2;

    }

    .hero-role{

        font-size:18px;

        line-height:1.7;

    }

    .hero-description{

        font-size:14px;

        line-height:1.8;

    }

    .hero-buttons{

        display:flex;

        flex-wrap:wrap;

        gap:12px;

    }

    .hero-buttons .btn,
    .hero-buttons .btn-outline{

        font-size:12px;

        padding:12px 18px;

    }


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

    .about-grid{

        grid-template-columns:1fr;

        gap:30px;

    }

    .about-image{

        text-align:center;

    }

    .about-image img{

        max-width:220px;

    }


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

    .card-grid{

        grid-template-columns:1fr;

    }


    /* =========================
       TECHNICAL EXPERTISE
    ========================= */

    .expertise-grid{

        grid-template-columns:1fr;

    }


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

    #experience{

        padding:70px 0;

    }

    .timeline{

        margin-top:40px;

    }

    .timeline-item{

        padding-left:50px;

        margin-bottom:35px;

    }

    .timeline::before{

        left:15px;

    }

    .timeline-dot{

        left:5px;

        width:20px;

        height:20px;

    }

    .timeline-content{

        padding:20px;

    }

    .timeline-content h3{

        font-size:18px;

        line-height:1.5;

    }

    .timeline-content h4{

        font-size:14px;

    }

    .timeline-content p{

        font-size:13px;

        line-height:1.7;

    }


    /* =========================
       AWARDS
    ========================= */

    .awards-grid{

        grid-template-columns:1fr;

    }

    .award-card{

        padding:25px 20px;

    }


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

    .contact-grid{

        grid-template-columns:1fr;

    }

    .contact-card{

        width:100%;

    }

}