.nav-link{

    position:relative;

    color:#475569;

    font-weight:500;

    transition:.3s;

}

.nav-link:hover{

    color:#2563eb;

}

.nav-link::after{

    content:"";

    position:absolute;

    left:0;

    bottom:-8px;

    width:0;

    height:3px;

    border-radius:999px;

    background:#2563eb;

    transition:.3s;

}

.nav-link:hover::after{

    width:100%;

}

.nav-link.active{

    color:#2563eb;

}

.nav-link.active::after{

    width:100%;

}


.skill-tag{
    padding:8px 18px;
    border-radius:9999px;
    background:#EFF6FF;
    color:#2563EB;
    font-size:.875rem;
    font-weight:600;
    transition:.3s;
}

.skill-tag:hover{
    background:#2563EB;
    color:white;
    transform:translateY(-2px);
}


.edu-tag{

    padding:8px 18px;

    background:#EFF6FF;

    color:#2563EB;

    border-radius:9999px;

    font-size:14px;

    font-weight:600;

    transition:.3s;

}

.edu-tag:hover{

    background:#2563EB;

    color:white;

}


.stat-card{
    background:#fff;
    border-radius:1.5rem;
    padding:2rem;
    text-align:center;
    box-shadow:0 10px 30px rgba(15,23,42,.08);
    transition:.3s;
}

.stat-card:hover{
    transform:translateY(-6px);
}

.stat-card h3{
    font-size:2rem;
    font-weight:800;
    color:#2563EB;
}

.stat-card p{
    margin-top:.5rem;
    color:#64748B;
}

.cert-filter{
    padding:.65rem 1.25rem;
    border-radius:9999px;
    background:#fff;
    border:1px solid #CBD5E1;
    cursor:pointer;
    transition:.25s;
    font-weight:600;
}

.cert-filter:hover,
.cert-filter.active{
    background:#2563EB;
    color:#fff;
    border-color:#2563EB;
}

.cert-card{
    background:#fff;
    border-radius:1.5rem;
    overflow:hidden;
    box-shadow:0 10px 30px rgba(15,23,42,.08);
    transition:.3s;
}

.cert-card:hover{
    transform:translateY(-8px);
    box-shadow:0 20px 40px rgba(15,23,42,.15);
}

.cert-card img{
    width:100%;
    height:220px;
    object-fit:contain;
    background:#F8FAFC;
    padding:1.5rem;
}

.cert-card h3{
    font-size:1.2rem;
    font-weight:700;
    margin-top:1rem;
}

.cert-card p{
    color:#64748B;
    margin-top:.5rem;
}

.cert-type{
    display:inline-block;
    padding:.3rem .75rem;
    border-radius:999px;
    font-size:.75rem;
    font-weight:600;
    margin-bottom:.75rem;
}

.cert-type.azure{
    background:#DBEAFE;
    color:#2563EB;
}

.cert-type.ai{
    background:#DCFCE7;
    color:#15803D;
}

.cert-type.security{
    background:#FEE2E2;
    color:#DC2626;
}

.cert-type.trainer{
    background:#EDE9FE;
    color:#7C3AED;
}


.skill-card{

    background:white;

    border-radius:24px;

    padding:32px;

    border:1px solid #E2E8F0;

    transition:.35s;

    box-shadow:0 10px 30px rgba(15,23,42,.06);

}

.skill-card:hover{

    transform:translateY(-10px);

    box-shadow:0 20px 45px rgba(15,23,42,.15);

}

.skill-icon{

    width:72px;

    height:72px;

    border-radius:20px;

    display:flex;

    align-items:center;

    justify-content:center;

    font-size:32px;

}

.skill-card h3{

    margin-top:24px;

    font-size:1.5rem;

    font-weight:700;

}

.skill-card p{

    margin-top:12px;

    color:#64748B;

    line-height:1.8;

}

.skill-tags{

    display:flex;

    flex-wrap:wrap;

    gap:10px;

    margin-top:24px;

}

.skill-tags span{

    background:#EFF6FF;

    color:#2563EB;

    padding:8px 16px;

    border-radius:999px;

    font-size:14px;

    font-weight:600;

    transition:.25s;

}

.skill-tags span:hover{

    background:#2563EB;

    color:white;

}

.achievement-stat{

    background:#fff;

    padding:2rem;

    border-radius:24px;

    text-align:center;

    box-shadow:0 10px 25px rgba(15,23,42,.08);

    transition:.3s;

}

.achievement-stat:hover{

    transform:translateY(-6px);

}

.achievement-stat h3{

    font-size:2.5rem;

    font-weight:800;

    color:#2563EB;

}

.achievement-stat p{

    margin-top:10px;

    color:#64748B;

}

.achievement-card{

    background:#fff;

    border-radius:24px;

    padding:2rem;

    display:flex;

    gap:24px;

    align-items:flex-start;

    border:1px solid #E2E8F0;

    transition:.3s;

    box-shadow:0 10px 30px rgba(15,23,42,.06);

}

.achievement-card:hover{

    transform:translateY(-8px);

    box-shadow:0 20px 45px rgba(15,23,42,.12);

}

.achievement-icon{

    width:70px;

    height:70px;

    flex-shrink:0;

    border-radius:18px;

    background:#EFF6FF;

    display:flex;

    align-items:center;

    justify-content:center;

    font-size:30px;

}

.achievement-card h3{

    font-size:1.3rem;

    font-weight:700;

}

.achievement-card p{

    margin-top:12px;

    color:#64748B;

    line-height:1.8;

}

.milestone{

    background:#fff;

    border-radius:20px;

    padding:2rem;

    text-align:center;

    border-top:5px solid #2563EB;

    box-shadow:0 10px 25px rgba(15,23,42,.08);

}

.year{

    font-size:2rem;

    font-weight:800;

    color:#2563EB;

    margin-bottom:15px;

}


.research-stat{

    background:white;

    padding:2rem;

    border-radius:24px;

    text-align:center;

    box-shadow:0 10px 30px rgba(15,23,42,.08);

}

.research-stat h3{

    font-size:2rem;

    font-weight:800;

    color:#2563EB;

}

.section-title{

    font-size:2rem;

    font-weight:700;

    color:#0F172A;

}

.research-tag{

    background:#EFF6FF;

    color:#2563EB;

    padding:10px 18px;

    border-radius:999px;

    font-weight:600;

    transition:.3s;

}

.research-tag:hover{

    background:#2563EB;

    color:white;

}

.publication-card{

    display:flex;

    gap:30px;

    background:white;

    padding:2rem;

    border-radius:24px;

    margin-bottom:25px;

    box-shadow:0 10px 30px rgba(15,23,42,.08);

    transition:.3s;

}

.publication-card:hover{

    transform:translateY(-6px);

}

.publication-icon{

    width:80px;

    height:80px;

    border-radius:20px;

    background:#EFF6FF;

    display:flex;

    align-items:center;

    justify-content:center;

    font-size:36px;

}

.publication-status{

    display:inline-block;

    background:#DCFCE7;

    color:#15803D;

    padding:6px 14px;

    border-radius:999px;

    font-size:13px;

    font-weight:700;

    margin-bottom:15px;

}

.publication-status.draft{

    background:#FEF3C7;

    color:#B45309;

}

.publication-card h3{

    font-size:1.4rem;

    font-weight:700;

}

.publication-card p{

    margin-top:12px;

    color:#64748B;

    line-height:1.8;

}

.publication-meta{

    display:flex;

    gap:12px;

    flex-wrap:wrap;

    margin-top:18px;

}

.publication-meta span{

    background:#F8FAFC;

    padding:8px 14px;

    border-radius:999px;

    font-size:14px;

}

.profile-card{

    background:white;

    text-align:center;

    padding:2rem;

    border-radius:24px;

    box-shadow:0 10px 30px rgba(15,23,42,.08);

    transition:.3s;

}

.profile-card:hover{

    transform:translateY(-8px);

}

.profile-card h4{

    margin-top:15px;

    font-size:1.2rem;

    font-weight:700;

}

.profile-card p{

    margin-top:10px;

    color:#64748B;

}


.contact-card{

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

    backdrop-filter:blur(16px);

    border:1px solid rgba(255,255,255,.12);

    border-radius:24px;

    padding:2rem;

    text-align:center;

    transition:.35s;

}

.contact-card:hover{

    transform:translateY(-8px);

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

}

.contact-icon{

    width:70px;

    height:70px;

    margin:auto;

    border-radius:18px;

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

    display:flex;

    align-items:center;

    justify-content:center;

    font-size:32px;

}

.contact-card h3{

    margin-top:20px;

    font-size:1.3rem;

    font-weight:700;

}

.contact-card p{

    margin-top:10px;

    color:#CBD5E1;

}

.contact-chip{

    padding:12px 22px;

    border-radius:999px;

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

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

    transition:.3s;

}

.contact-chip:hover{

    background:#2563EB;

}

.social-link{

    color:#CBD5E1;

    transition:.3s;

}

.social-link:hover{

    color:white;

}

.about-card{
    background:#fff;
    border:1px solid #E2E8F0;
    border-radius:28px;
    padding:2.5rem;
    box-shadow:0 10px 30px rgba(15,23,42,.06);
}

.about-card h3{
    font-size:2rem;
    font-weight:700;
    margin-bottom:1.5rem;
}

.about-card p{
    color:#475569;
    line-height:2;
    margin-bottom:1.25rem;
}

.info-card{
    background:#fff;
    border:1px solid #E2E8F0;
    border-radius:24px;
    padding:2rem;
    box-shadow:0 10px 30px rgba(15,23,42,.06);
}

.info-card h3{
    font-size:1.4rem;
    font-weight:700;
    margin-bottom:1.5rem;
}

.info-card ul{
    display:flex;
    flex-direction:column;
    gap:1rem;
}

.info-card li{
    display:flex;
    justify-content:space-between;
    align-items:center;
    border-bottom:1px solid #F1F5F9;
    padding-bottom:.75rem;
}

.info-card li:last-child{
    border-bottom:none;
    padding-bottom:0;
}

.info-card span{
    color:#64748B;
}

.info-card strong{
    color:#0F172A;
}

.expertise-item{
    background:#F8FAFC;
    border:1px solid #E2E8F0;
    border-radius:16px;
    padding:1rem 1.25rem;
    font-weight:600;
    transition:.3s;
}

.expertise-item:hover{
    background:#2563EB;
    color:#fff;
    transform:translateY(-4px);
}

.about-chip{
    background:#EFF6FF;
    color:#2563EB;
    padding:.6rem 1rem;
    border-radius:9999px;
    font-size:.875rem;
    font-weight:600;
    transition:.3s;
}

.about-chip:hover{
    background:#2563EB;
    color:#fff;
}

.language-item{
    display:flex;
    justify-content:space-between;
    padding-bottom:.75rem;
    border-bottom:1px solid #F1F5F9;
}

.language-item:last-child{
    border-bottom:none;
    padding-bottom:0;
}