:root{
    --bg:#0b0c10;
    --panel:#111217;
    --muted:#b4b7c1;
    --text:#e8ebf2;
    --accent:#66fcf1;
    --accent-2:#45a29e;
    --link:#cfd3ff;
    --shadow: 0 10px 30px rgba(0,0,0,.35);
    --radius: 18px;
}
*{box-sizing:border-box}
body{
    margin:0; font-family:Poppins, sans-serif;
    background:var(--bg); color:var(--text);
    scroll-behavior:smooth; line-height:1.65;
}
a{color:var(--link); text-decoration:none}
a:hover{opacity:.9}

/* Navbar */
.nav{
    position:fixed; top:0; left:0; right:0; height:64px;
    display:flex; align-items:center; justify-content:space-between;
    padding:0 24px; background:rgba(11,12,16,.55);
    backdrop-filter: blur(10px); z-index:50;
    border-bottom:1px solid rgba(255,255,255,.06);
}
.brand{display:flex; align-items:center; gap:10px; font-weight:700}
.brand .logo{width:28px;height:28px;border-radius:8px; display:grid; place-items:center; background:linear-gradient(135deg,var(--accent),#7df8f0)}
.nav ul{list-style:none; display:flex; gap:12px; margin:0; padding:0}
.nav a{color:var(--text); font-weight:500; padding:8px 12px; border-radius:8px; transition:all 0.2s ease}
.nav a:hover{background:rgba(102,252,241,0.1); color:var(--accent);}

.cta-btn{
    padding:10px 16px; 
    border-radius:999px; 
    color:#071217; 
    background:var(--accent); 
    font-weight:700; 
    border:none;
    transition: all 0.3s ease;
}
.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 252, 241, 0.3);
}

/* Hero */
.hero{
    min-height: 92vh; 
    display:grid; 
    grid-template-columns: 1fr 1fr;
    margin-top:64px;
    align-items: center;
    padding: 0 9vw;
}
.hero-left{
    padding: 0 20px 0 0;
}
.hello{font-weight:600; color:var(--muted); letter-spacing: 0.5px;}
.name{
    font-size:clamp(36px,5vw,56px); 
    font-weight:800; 
    margin:10px 0;
    line-height: 1.1;
    background: linear-gradient(to right, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.role{
    color:var(--accent-2); 
    font-weight:600;
    font-size: 1.2rem;
}
.socials{
    display:flex; 
    gap:15px; 
    margin:22px 0 32px;
}
.icon-btn{
    width:42px;
    height:42px; 
    border-radius:12px; 
    display:grid; 
    place-items:center; 
    background:var(--panel); 
    border:1px solid rgba(255,255,255,.06);
    transition: all 0.3s ease;
}
.icon-btn:hover {
    transform: translateY(-3px);
    background: rgba(102, 252, 241, 0.1);
}
.hero-actions{
    display:flex; 
    gap:15px; 
    flex-wrap:wrap
}
.hero-right {
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-img {
    width: 430px;
    height: 430px;
    border-radius: 50%;
    border: 5px solid var(--accent);
    box-shadow: 0 8px 25px rgba(0,0,0,0.4);
    object-fit: cover;
    transition: transform 0.3s ease;
    animation: float 6s ease-in-out infinite;
}
.hero-img:hover {
    transform: scale(1.05);
}
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

/* Sections */
section{
    padding:84px 9vw;
}
.section-title{
    font-size:clamp(24px,3.2vw,36px); 
    margin:0 0 18px; 
    font-weight:800;
    position: relative;
    display: inline-block;
}
.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
}
.muted{color:var(--muted)}
.card{
    background:var(--panel); 
    border:1px solid rgba(255,255,255,.07); 
    border-radius:var(--radius); 
    box-shadow:var(--shadow); 
    padding:24px; 
    margin-bottom:30px;
}

/* Timeline alternating */
.timeline {
    position: relative;
    padding: 20px 0;
}
.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background: var(--accent);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
}
.tl-item {
    padding: 20px 30px;
    position: relative;
    background: inherit;
    width: 50%;
}
.tl-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    right: -10px;
    background: var(--bg);
    border: 2px solid var(--accent);
    top: 20px;
    border-radius: 50%;
    z-index: 1;
}
.tl-left {left: 0;}
.tl-right {left: 50%;}
.tl-right::after {left: -10px;}

/* Skills as circles */
.skills{
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}
.skill-circle{
    width: 120px; 
    height: 120px;
    border-radius: 50%;
    background: var(--panel);
    display: flex; 
    flex-direction: column;
    justify-content: center; 
    align-items: center;
    border: 2px solid var(--accent);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}
.skill-circle:hover {
    transform: translateY(-5px);
    background: rgba(102, 252, 241, 0.05);
}
.skill-circle span:first-child{
    font-weight:600;
    font-size: 1.1rem;
}
.skill-circle span:last-child{
    color:var(--muted); 
    font-size:12px;
}

/* Certifications */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.certification-card {
    background: var(--panel);
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid rgba(255,255,255,.1);
    transition: all 0.3s ease;
}
.certification-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}
.certification-card h3 {
    color: var(--accent);
    margin-top: 0;
}
.certification-card .issuer {
    color: var(--muted);
    font-size: 0.9rem;
}
.certification-card .date {
    color: var(--muted);
    font-size: 0.8rem;
    margin-top: 10px;
}
.certification-card .credential {
    display: inline-block;
    margin-top: 15px;
    padding: 5px 10px;
    background: rgba(102, 252, 241, 0.1);
    border-radius: 4px;
    font-size: 0.8rem;
}

@media(max-width:768px){
    .timeline::after{left:31px;}
    .tl-item{width:100%; padding-left:70px; padding-right:25px;}
    .tl-item::after{left:15px;}
    .tl-right{left:0;}
}

/* Projects */
.projects-grid{
    display:grid; 
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap:24px;
}
.project-card{
    background:var(--panel); 
    border-radius:var(--radius);
    overflow:hidden; 
    box-shadow:var(--shadow);
    display:flex; 
    flex-direction:column;
    transition: all 0.3s ease;
}
.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}
.project-card img{
    width:100%; 
    height:200px; 
    object-fit:cover;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.project-info{
    padding:20px; 
    flex:1; 
    display:flex; 
    flex-direction:column; 
    justify-content:space-between;
}
.project-info h3{
    margin:0 0 10px;
    color: var(--accent);
}
.project-info a{
    align-self:flex-start; 
    margin-top:10px;
}

/* Testimonials */
.testimonials-grid{
    display:grid; 
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap:24px;
}
.testimonial-card{
    background:var(--panel); 
    padding:20px; 
    border-radius:var(--radius);
    text-align:center; 
    box-shadow:var(--shadow);
    transition: all 0.3s ease;
}
.testimonial-card:hover {
    transform: translateY(-5px);
}
.testimonial-card img{
    width:60px; 
    height:60px; 
    border-radius:50%; 
    margin-bottom:12px;
    border:2px solid var(--accent);
    object-fit: cover;
}
.testimonial-card p{
    font-style:italic; 
    color:var(--muted);
    margin-bottom: 15px;
}

/* Contact Form */
.contact-form{
    max-width:500px; 
    margin:auto; 
    display:flex; 
    flex-direction:column; 
    gap:15px;
}
.contact-form input, 
.contact-form textarea{
    padding:12px 15px; 
    border-radius:var(--radius);
    border:none; 
    outline:none; 
    background:var(--panel);
    color:var(--text); 
    font-size:14px;
    border: 1px solid rgba(255,255,255,0.1);
}
.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}
.contact-form button{
    align-self:flex-start;
}

/* Footer */
footer {
    background:var(--panel);
    padding: 30px 20px;
    text-align:center;
    color:var(--muted);
    border-top: 1px solid rgba(255,255,255,0.1);
}
footer p {
    margin: 10px 0;
}
footer a {
    color:var(--accent);
    margin:0 10px;
    text-decoration:none;
    transition: all 0.3s ease;
}
footer a:hover {
    text-decoration:underline;
    opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
    grid-template-columns: 1fr;
    padding: 0 5vw;
    text-align: center;
    }
    .hero-left {
    padding: 40px 0;
    }
    .hero-actions {
    justify-content: center;
    }
    .socials {
    justify-content: center;
    }
    .hero-img {
    width: 250px;
    height: 250px;
    margin: 0 auto;
    }
    .tl-item {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
    }
    .tl-item::after {
    left: 15px;
    }
    .tl-right {
    left: 0;
    }
    .timeline::after {
    left: 31px;
    }
}