:root{
  --bg: #070c18;
  --bg2:#070c18;
  --card: rgba(255,255,255,0.06);
  --card2: rgba(255,255,255,0.08);
  --border: rgba(255,255,255,0.10);
  --text: #eaf0ff;
  --muted: rgba(234,240,255,0.70);
  --accent: #2f7bff;
  --accent2:#5aa6ff;
  --shadow: 0 22px 70px rgba(0,0,0,0.40);
  --radius: 18px;
  --container: 1160px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family: var(--font);
  background: radial-gradient(900px 520px at 50% 20%, rgba(47,123,255,0.18), transparent 65%),
              radial-gradient(720px 460px at 80% 30%, rgba(90,166,255,0.10), transparent 65%),
              var(--bg);
  color: var(--text);
  overflow-x:hidden;
}
a{ color: inherit; text-decoration:none; }
img{ max-width:100%; display:block; }

.container{
  width: min(var(--container), calc(100% - 36px));
  margin: 0 auto;
}

/* ===== HERO BG IMAGE (like screenshot) ===== */
.hero-bg{
  position: fixed;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(7,12,24,0.80), rgba(7,12,24,0.92)),
    url("images/hero-bg.jpg");
  background-size: cover;
  background-position: center;
  filter: saturate(1.1) contrast(1.05);
  z-index: -3;
}
.bg-orbs{
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events:none;
}
.bg-orbs::before,
.bg-orbs::after{
  content:"";
  position:absolute;
  width: 520px;
  height: 520px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, rgba(47,123,255,0.35), transparent 60%);
  filter: blur(20px);
  opacity: 0.55;
  animation: float 8s ease-in-out infinite;
}
.bg-orbs::before{ left: -120px; top: 90px; }
.bg-orbs::after{
  width: 580px; height: 580px;
  right: -180px; bottom: -120px;
  background: radial-gradient(circle at 30% 30%, rgba(90,166,255,0.25), transparent 60%);
  animation-delay: 1.6s;
}
@keyframes float{
  0%,100%{ transform: translateY(0); }
  50%{ transform: translateY(-18px); }
}

/* ===== NAVBAR (like sample) ===== */
.topbar{
  position: sticky;
  top:0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(7,12,24,0.55);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 16px 0;
}
.brand{
  display:flex;
  flex-direction:column;
  gap: 2px;
}
.brand-name{
  font-size: 22px;
  font-weight: 900;
  letter-spacing: .2px;
  color: var(--accent2);
}
.brand-dot{ color: var(--accent); }
.brand-sub{
  font-size: 12px;
  font-weight: 800;
  opacity: .75;
  letter-spacing: .5px;
}

.nav-links{
  display:flex;
  align-items:center;
  gap: 18px;
}
.nav-link{
  font-weight: 800;
  opacity: .92;
  padding: 10px 10px;
  border-radius: 12px;
  transition: .2s ease;
}
.nav-link:hover{ background: rgba(255,255,255,0.06); }
.nav-link.active{ background: rgba(47,123,255,0.16); }

.nav-toggle{
  display:none;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.05);
  cursor:pointer;
  padding: 10px;
}
.nav-toggle span{
  display:block;
  height: 2px;
  margin: 6px 0;
  background: var(--text);
  opacity: .85;
}

/* ===== BUTTONS ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 12px 18px;
  border-radius: 14px;
  border: 1px solid var(--border);
  font-weight: 900;
  cursor:pointer;
  transition: .2s ease;
}
.btn:hover{ transform: translateY(-2px); box-shadow: var(--shadow); }
.btn.small{ padding: 10px 14px; border-radius: 12px; font-size: 13px; }

.btn.primary{
  border: none;
  color: #041022;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
}
.btn.outline{
  background: transparent;
  color: var(--text);
}
.btn.hire{
  background: rgba(47,123,255,0.18);
  border: 1px solid rgba(47,123,255,0.35);
}

/* ===== HERO ===== */
.hero{
  padding: 46px 0 34px;
}
.hero-wrap{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 30px;
  align-items:center;
}
.hero-brandline{
  margin:0 0 10px;
  color: rgba(234,240,255,0.78);
  font-weight: 800;
}
.hero-title{
  margin: 0;
  font-size: clamp(40px, 5vw, 70px);
  letter-spacing: -1px;
}
.hero-role{
  margin: 12px 0 0;
  font-size: clamp(18px, 2vw, 22px);
  color: rgba(234,240,255,0.84);
  font-weight: 700;
}
.hero-desc{
  margin: 14px 0 0;
  max-width: 60ch;
  color: var(--muted);
  line-height: 1.7;
}
.accent{ color: var(--accent); }
.accent2{ color: var(--accent2); }

.hero-typing{
  margin-top: 14px;
  padding: 12px 14px;
  width: fit-content;
  max-width: 100%;
  border-radius: 14px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  font-weight: 800;
}
.hero-actions{
  display:flex;
  gap: 12px;
  flex-wrap:wrap;
  margin-top: 18px;
}

.hero-socials{
  display:flex;
  align-items:center;
  gap: 14px;
  margin-top: 18px;
}
.social{
  width: 44px;
  height: 44px;
  border-radius: 999px;
  display:flex;
  align-items:center;
  justify-content:center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  transition:.2s ease;
}
.social:hover{ transform: translateY(-2px); box-shadow: var(--shadow); }
.down{
  margin-left: 6px;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  display:flex;
  align-items:center;
  justify-content:center;
  border: 1px solid rgba(47,123,255,0.35);
  background: rgba(47,123,255,0.16);
}
.down-arrow{ font-weight: 900; }

/* ===== Profile (right) ===== */
.hero-profile{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap: 12px;
}
.profile-card{
  width: min(360px, 100%);
  border-radius: 26px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  box-shadow: var(--shadow);
  overflow:hidden;
  position:relative;
}
.profile-ring{
  position:absolute;
  inset:-60px;
  border-radius: 32px;
  border: 2px solid rgba(47,123,255,0.12);
  pointer-events:none;
}
.profile-img{
  width:100%;
  height: 380px;
  object-fit: cover;
  transform: scale(1.02);
}
.profile-mini{
  width: min(360px, 100%);
  display:flex;
  flex-direction:column;
  gap: 8px;
}
.mini-row{
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  color: rgba(234,240,255,0.86);
  font-weight: 800;
}

/* ===== Sections ===== */
.section{ padding: 60px 0; }
.title-block h2{
  margin: 0;
  font-size: 44px;
  letter-spacing: -0.6px;
}
.title-block p{
  margin: 12px auto 0;
  max-width: 80ch;
  color: var(--muted);
  line-height: 1.8;
}
.title-block.center{ text-align:center; }

/* ===== About Cards ===== */
.about-cards{
  margin-top: 28px;
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.glass-card{
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.05));
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 22px;
  padding: 22px;
  min-height: 230px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.22);
  transition: .25s ease;
}
.glass-card:hover{
  transform: translateY(-6px);
  border-color: rgba(47,123,255,0.35);
}
.icon-bubble{
  width: 56px;
  height: 56px;
  border-radius: 999px;
  display:flex;
  align-items:center;
  justify-content:center;
  background: rgba(47,123,255,0.16);
  border: 1px solid rgba(47,123,255,0.28);
  margin-bottom: 14px;
  font-size: 22px;
}
.glass-card h3{ margin: 0; font-size: 20px; }
.glass-card p{ margin: 10px 0 0; color: var(--muted); line-height: 1.7; }

/* ===== Skills ===== */
.skill-cols{
  margin-top: 26px;
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.skill-col h3{
  margin: 0 0 14px;
  color: var(--accent2);
  font-size: 22px;
}
.chips{ display:flex; flex-wrap:wrap; gap: 10px; }
.chip{
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  font-weight: 900;
  color: rgba(234,240,255,0.88);
}
.chip.active{
  background: rgba(47,123,255,0.22);
  border-color: rgba(47,123,255,0.38);
}

/* ===== Projects (like screenshot) ===== */
.project-list{ margin-top: 26px; display:flex; flex-direction:column; gap: 18px; }
.project{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items:center;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,0.10);
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.05));
  box-shadow: 0 14px 46px rgba(0,0,0,0.24);
  overflow:hidden;
}
.project.reverse .project-media{ order: 2; }
.project.reverse .project-info{ order: 1; }
.project-media{
  height: 290px;
  background: rgba(0,0,0,0.2);
}
.project-media img{
  width:100%;
  height:100%;
  object-fit: cover;
}
.project-info{
  padding: 22px;
}
.project-info h3{
  margin:0;
  font-size: 24px;
}
.project-info p{
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.7;
}
.stack{
  margin-top: 14px;
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
}
.stack span{
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(47,123,255,0.14);
  border: 1px solid rgba(47,123,255,0.26);
  font-weight: 900;
  color: rgba(234,240,255,0.90);
}
.actions{
  margin-top: 16px;
  display:flex;
  gap: 12px;
  flex-wrap:wrap;
}

/* ===== Publications ===== */
.pubs{
  margin-top: 22px;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.pub{
  padding: 22px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.06);
}
.pub h3{ margin:0; font-size: 18px; line-height:1.35; }
.muted{ color: var(--muted); }
.pub-actions{ margin-top: 12px; display:flex; gap: 10px; flex-wrap:wrap; }

/* ===== Resume ===== */
.resume-card{
  display:flex;
  justify-content:space-between;
  gap: 16px;
  align-items:center;
  flex-wrap: wrap;
  padding: 24px;
  border-radius: 22px;
  border: 1px solid rgba(47,123,255,0.26);
  background: linear-gradient(135deg, rgba(47,123,255,0.22), rgba(255,255,255,0.06));
}
.resume-card h2{ margin:0; }
.resume-actions{ display:flex; gap: 12px; flex-wrap:wrap; }
.tiny{ font-size: 12px; }

/* ===== Contact ===== */
.contact-grid{
  margin-top: 26px;
  display:grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 16px;
}
.contact-card, .form-card{
  padding: 22px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.06);
}
.contact-card h3, .form-card h3{ margin:0 0 12px; }
.contact-links{ display:flex; flex-direction:column; gap: 10px; }
.contact-links a{
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  font-weight: 900;
  color: rgba(234,240,255,0.86);
  transition:.2s ease;
}
.contact-links a:hover{ transform: translateY(-2px); box-shadow: var(--shadow); }

form label{
  display:block;
  margin-top: 12px;
  margin-bottom: 6px;
  font-weight: 900;
  color: rgba(234,240,255,0.84);
}
input, textarea{
  width:100%;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(0,0,0,0.16);
  color: var(--text);
  outline:none;
  font-weight: 800;
}
textarea{ resize: vertical; }

/* ===== Footer ===== */
.footer{
  padding: 40px 0 26px;
  border-top: 1px solid rgba(255,255,255,0.08);
  background: rgba(0,0,0,0.18);
}
.footer-row{
  display:flex;
  justify-content:space-between;
  gap: 16px;
  align-items:flex-start;
  flex-wrap:wrap;
}
.footer-left h4{ margin:0; color: var(--accent2); font-size: 18px; }
.footer-left p{ margin: 8px 0 0; color: var(--muted); }
.footer-right{ display:flex; gap: 10px; }
.footer-ico{
  width: 44px; height: 44px;
  border-radius: 999px;
  display:flex; align-items:center; justify-content:center;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.06);
  font-weight: 900;
}
.footer-bottom{
  margin-top: 18px;
  color: var(--muted);
  font-weight: 800;
}

/* ===== Reveal ===== */
.reveal{
  opacity:0;
  transform: translateY(14px);
  transition: .7s ease;
}
.reveal.show{ opacity:1; transform: translateY(0); }

/* ===== Back to top ===== */
.to-top{
  position:fixed;
  right: 16px;
  bottom: 16px;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  cursor:pointer;
  display:none;
  box-shadow: var(--shadow);
}

/* ===== Responsive ===== */
@media (max-width: 1050px){
  .about-cards{ grid-template-columns: repeat(2, 1fr); }
  .skill-cols{ grid-template-columns: repeat(2, 1fr); }
  .pubs{ grid-template-columns: 1fr; }
}
@media (max-width: 980px){
  .hero-wrap{ grid-template-columns: 1fr; }
  .profile-img{ height: 320px; }
  .project{ grid-template-columns: 1fr; }
  .project.reverse .project-media{ order: 0; }
  .contact-grid{ grid-template-columns: 1fr; }
}
@media (max-width: 760px){
  .nav-toggle{ display:block; }
  .nav-links{
    position:absolute;
    top: 70px;
    left: 12px;
    right: 12px;
    padding: 12px;
    border-radius: 18px;
    display:none;
    flex-direction:column;
    background: rgba(7,12,24,0.92);
    border: 1px solid rgba(255,255,255,0.08);
  }
  .nav-links.open{ display:flex; }
  .title-block h2{ font-size: 36px; }
}
@media (max-width: 420px){
  .hero-title{ font-size: 38px; }
}

.about-section{
    padding:120px 10%;
    text-align:center;
}

/* Title */

.section-title{
    font-size:48px;
    font-weight:800;
    color:#ffffff;
    margin-bottom:35px;
}

.section-title span{
    color:#2f7bff;
    background:linear-gradient(90deg,#2f7bff,#5aa6ff);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}

/* Text */

.about-text{
    max-width:900px;
    margin:auto;
    font-size:22px;
    line-height:1.8;
    font-weight:500;
    color:#c9d4ff;
}

/* Highlight words */

.highlight{
    font-weight:700;
    color:#2f7bff;
    position:relative;
}

/* animated underline */

.highlight::after{
    content:"";
    position:absolute;
    left:0;
    bottom:-4px;
    width:100%;
    height:2px;
    background:linear-gradient(90deg,#2f7bff,#5aa6ff,#2f7bff);
    background-size:200%;
    animation:lineMove 3s linear infinite;
}

@keyframes lineMove{
    0%{background-position:0%;}
    100%{background-position:200%;}
}
.footer{
    background:#020b1f;
    padding:70px 10% 30px;
    color:#cfd9ff;
}

.footer-container{
    display:grid;
    grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
    gap:40px;
    margin-bottom:40px;
}

.footer-brand h2{
    color:#2f7bff;
    font-size:28px;
    margin-bottom:10px;
}

.footer-brand p{
    color:#a5b4ff;
    font-size:15px;
}

.footer-links h3,
.footer-social h3{
    margin-bottom:15px;
    color:#ffffff;
}

.footer-links a{
    display:block;
    margin:6px 0;
    text-decoration:none;
    color:#aab4ff;
    transition:.3s;
}

.footer-links a:hover{
    color:#2f7bff;
}

.social-icons{
    display:flex;
    gap:15px;
}

.social-icons a{
    width:40px;
    height:40px;
    display:flex;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    background:#0c1d42;
    color:#fff;
    font-size:18px;
    transition:.3s;
}

.social-icons a:hover{
    background:#2f7bff;
    transform:translateY(-3px);
}

.footer-bottom{
    border-top:1px solid rgba(255,255,255,0.08);
    padding-top:20px;
    text-align:center;
    font-size:14px;
    color:#9aa7ff;
}

/* ===== Certifications ===== */
.cert-grid{
  margin-top: 26px;
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.cert-card{
  display:flex;
  gap: 14px;
  padding: 20px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,0.10);
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.05));
  box-shadow: 0 14px 46px rgba(0,0,0,0.22);
  transition: .25s ease;
}

.cert-card:hover{
  transform: translateY(-6px);
  border-color: rgba(47,123,255,0.35);
}

.cert-logo{
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight: 900;
  background: rgba(47,123,255,0.16);
  border: 1px solid rgba(47,123,255,0.28);
  color: rgba(234,240,255,0.92);
  flex-shrink:0;
}

.cert-body h3{
  margin:0;
  font-size: 18px;
  line-height: 1.35;
}
.cert-meta{
  margin: 8px 0 0;
  color: rgba(234,240,255,0.70);
  font-weight: 800;
}
.cert-actions{
  margin-top: 14px;
  display:flex;
  gap: 10px;
  flex-wrap:wrap;
}

/* ===== Modal ===== */
.cert-modal{
  position: fixed;
  inset: 0;
  display:none;
  z-index: 120;
}
.cert-modal.show{ display:block; }

.cert-modal-overlay{
  position:absolute;
  inset:0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(8px);
}

.cert-modal-card{
  position:relative;
  width: min(980px, calc(100% - 26px));
  margin: 70px auto;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(7,12,24,0.95);
  box-shadow: 0 22px 70px rgba(0,0,0,0.50);
  overflow:hidden;
}

.cert-modal-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 16px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.cert-modal-top h3{ margin:0; font-size: 18px; }
.cert-modal-x{
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.06);
  color: rgba(234,240,255,0.9);
  cursor:pointer;
}

.cert-modal-view{
  position:relative;
  height: min(70vh, 560px);
  background: rgba(255,255,255,0.03);
}

#certFrame{
  width:100%;
  height:100%;
  border:0;
  display:none; /* shown only if loads */
}

.cert-fallback{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding: 18px;
  color: rgba(234,240,255,0.75);
  font-weight: 800;
}

.cert-modal-actions{
  display:flex;
  gap: 12px;
  justify-content:flex-end;
  padding: 14px 18px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

/* Responsive */
@media (max-width: 980px){
  .cert-grid{ grid-template-columns: 1fr; }
}