:root{
  --bg:#f4f7fb;
  --card:#ffffff;
  --dark:#0b1220;
  --dark2:#111827;
  --blue:#2563eb;
  --cyan:#06b6d4;
  --gold:#d4af37;
  --text:#1e293b;
  --muted:#64748b;
  --line:#dbe3ef;
  --shadow: 0 24px 70px rgba(15,23,42,.14);
  --radius:28px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at top left,rgba(37,99,235,.16),transparent 34%),
    radial-gradient(circle at top right,rgba(6,182,212,.14),transparent 38%),
    var(--bg);
  overflow-x:hidden;
}

a{text-decoration:none;color:inherit}
.container{width:min(1180px,92%);margin:auto}
.cursor-glow{
  position:fixed;width:350px;height:350px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,99,235,.16),transparent 70%);
  pointer-events:none;z-index:-1;transform:translate(-50%,-50%);
}

.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.82);
  backdrop-filter: blur(18px);
  border-bottom:1px solid rgba(219,227,239,.75);
}
.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;gap:12px;align-items:center}
.brand-mark{
  width:46px;height:46px;border-radius:16px;
  display:grid;place-items:center;
  color:#fff;font-weight:800;
  background:linear-gradient(135deg,var(--dark),var(--blue));
  box-shadow:0 14px 32px rgba(37,99,235,.26);
}
.brand strong{display:block;font-size:15px;color:var(--dark)}
.brand small{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.main-nav{display:flex;align-items:center;gap:22px;font-size:14px;font-weight:600;color:#334155}
.main-nav a{transition:.25s}
.main-nav a:hover{color:var(--blue)}
.nav-cta{
  padding:11px 18px;border-radius:999px;color:#fff!important;
  background:linear-gradient(135deg,var(--blue),var(--cyan));
}
.menu-toggle{display:none;background:none;border:0;gap:5px;flex-direction:column}
.menu-toggle span{width:28px;height:2px;background:var(--dark);display:block}

.hero{
  min-height:calc(100vh - 78px);
  display:flex;align-items:center;
  position:relative;overflow:hidden;padding:80px 0;
}
.hero-bg{
  position:absolute;inset:0;
  background:
    linear-gradient(120deg,rgba(11,18,32,.92),rgba(15,23,42,.74)),
    url('../img/hero-pattern.svg');
  background-size:cover;
  z-index:-2;
}
.hero:after{
  content:"";position:absolute;right:-10%;top:12%;
  width:520px;height:520px;border-radius:50%;
  background:linear-gradient(135deg,rgba(37,99,235,.35),rgba(6,182,212,.18));
  filter:blur(10px);z-index:-1;
}
.hero-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:48px;align-items:center}
.eyebrow,.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--blue);font-weight:800;letter-spacing:.12em;
  text-transform:uppercase;font-size:12px;
}
.hero h1{
  font-family:"Playfair Display",serif;
  color:#fff;font-size:clamp(42px,6vw,76px);
  line-height:.98;margin:18px 0 22px;
  letter-spacing:-.04em;
}
.hero-lead{color:#cbd5e1;font-size:18px;line-height:1.8;max-width:760px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0}
.hero-tags span{
  color:#e2e8f0;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);padding:10px 14px;border-radius:999px;font-size:13px;font-weight:700;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:14px 22px;border-radius:999px;font-weight:800;
  border:1px solid transparent;transition:.3s;cursor:pointer;
}
.btn.primary{background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;box-shadow:0 16px 42px rgba(37,99,235,.35)}
.btn.secondary{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.24);margin-left:10px}
.btn:hover{transform:translateY(-3px)}
.hero-card{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
  backdrop-filter:blur(18px);padding:20px;border-radius:var(--radius);box-shadow:var(--shadow);
}
.profile-photo{
  height:310px;border-radius:24px;background:
    linear-gradient(135deg,rgba(255,255,255,.16),rgba(255,255,255,.05));
  border:1px dashed rgba(255,255,255,.35);
  display:grid;place-items:center;color:#fff;text-align:center;
}
.profile-photo span{font-size:44px;font-weight:900;letter-spacing:.1em}
.profile-photo small{display:block;color:#cbd5e1;margin-top:6px}
.quick-info{padding:22px 4px 0;color:#fff}
.quick-info h3{font-size:24px;margin:0 0 4px}
.quick-info p{color:#cbd5e1;margin:0 0 16px}
.quick-info ul{list-style:none;margin:0;padding:0;color:#dbeafe;line-height:1.9;font-size:14px}

.section{padding:100px 0}
.section.soft{background:linear-gradient(180deg,#fff,rgba(239,246,255,.7))}
.section.dark{background:var(--dark);color:#fff}
.split{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.section-head h2{
  font-family:"Playfair Display",serif;
  font-size:clamp(34px,4vw,52px);
  line-height:1.05;margin:14px 0 0;color:var(--dark);
}
.dark .section-head h2{color:#fff}
.centered{text-align:center;max-width:860px;margin:0 auto 42px}
.text-card,.language-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:36px;box-shadow:var(--shadow);
}
.text-card p{font-size:17px;line-height:1.9;margin:0 0 16px}
.stats-section{padding:34px 0;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{
  background:linear-gradient(180deg,#fff,#f8fafc);
  border:1px solid var(--line);border-radius:22px;padding:24px;text-align:center;
}
.stat strong{display:block;font-size:38px;color:var(--blue);font-weight:900}
.stat span{font-size:13px;color:var(--muted);font-weight:700}

.expertise-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.expertise-card{
  background:linear-gradient(180deg,rgba(255,255,255,.09),rgba(255,255,255,.04));
  border:1px solid rgba(255,255,255,.12);
  border-radius:26px;padding:28px;transition:.3s;
}
.expertise-card:hover{transform:translateY(-7px);border-color:rgba(37,99,235,.8)}
.icon{
  width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--blue),var(--cyan));
  display:grid;place-items:center;font-weight:900;margin-bottom:18px;
}
.expertise-card h3{font-size:20px;margin:0 0 10px;color:#fff}
.expertise-card p{color:#cbd5e1;line-height:1.7;margin:0}

.timeline{max-width:980px;margin:20px auto 0;position:relative}
.timeline:before{content:"";position:absolute;left:140px;top:0;bottom:0;width:2px;background:var(--line)}
.timeline-item{display:grid;grid-template-columns:120px 1fr;gap:40px;margin-bottom:22px;position:relative}
.timeline-item:after{
  content:"";position:absolute;left:134px;top:24px;width:14px;height:14px;border-radius:50%;
  background:var(--blue);box-shadow:0 0 0 6px rgba(37,99,235,.15);
}
.year{font-weight:900;color:var(--blue);padding-top:18px;font-size:13px}
.timeline-content{
  background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:0 14px 40px rgba(15,23,42,.08);
}
.timeline-content h3{margin:0 0 8px;color:var(--dark);font-size:19px}
.timeline-content p{margin:0;color:var(--muted);line-height:1.7}

.project-filter{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.filter-btn{
  border:1px solid var(--line);background:#fff;border-radius:999px;
  padding:11px 16px;font-weight:800;color:#334155;cursor:pointer;transition:.25s;
}
.filter-btn.active,.filter-btn:hover{background:var(--dark);color:#fff;border-color:var(--dark)}
.projects-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.project-card{
  background:#fff;border:1px solid var(--line);border-radius:26px;padding:24px;min-height:230px;
  box-shadow:0 18px 48px rgba(15,23,42,.08);transition:.3s;position:relative;overflow:hidden;
}
.project-card:before{
  content:"";position:absolute;top:0;left:0;right:0;height:5px;
  background:linear-gradient(90deg,var(--blue),var(--cyan),var(--gold));
}
.project-card:hover{transform:translateY(-8px)}
.project-tag{
  display:inline-block;background:#eff6ff;color:var(--blue);
  padding:7px 10px;border-radius:999px;font-size:12px;font-weight:900;margin-bottom:14px;
}
.project-card h3{font-size:20px;margin:0 0 10px;color:var(--dark)}
.project-card p{margin:0;color:var(--muted);line-height:1.7}

.two-col{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start}
.education-list{padding:0;margin:22px 0 0;list-style:none}
.education-list li{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:18px 20px;margin-bottom:12px;box-shadow:0 12px 36px rgba(15,23,42,.06);
}
.education-list strong{display:block;color:var(--dark)}
.education-list span{color:var(--muted);font-size:14px;margin-top:5px;display:block}
.language-card h3{margin:0 0 20px;font-size:26px;color:var(--dark)}
.language{display:flex;justify-content:space-between;font-weight:800;margin:16px 0 8px}
.bar{height:9px;background:#e2e8f0;border-radius:999px;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--cyan));border-radius:999px}

.contact-section{
  padding:100px 0;background:linear-gradient(135deg,var(--dark),#1e293b);color:#fff;
}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start}
.contact-grid h2{
  font-family:"Playfair Display",serif;font-size:48px;line-height:1.05;margin:14px 0;color:#fff;
}
.contact-grid p{color:#cbd5e1}
.contact-form{
  background:#fff;border-radius:28px;padding:30px;box-shadow:var(--shadow);display:grid;gap:14px;
}
.contact-form input,.contact-form textarea{
  width:100%;border:1px solid var(--line);border-radius:16px;padding:15px 16px;font:inherit;
  outline:none;transition:.25s;
}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(37,99,235,.1)}
.form-note{color:var(--muted)!important;font-size:13px;margin:4px 0 0}

.site-footer{background:#060b14;color:#94a3b8;padding:24px 0}
.site-footer .container{display:flex;justify-content:space-between;align-items:center}
.site-footer a{color:#fff;font-weight:800}

.reveal{opacity:0;transform:translateY(24px);transition:.8s cubic-bezier(.2,.7,.2,1)}
.reveal.visible{opacity:1;transform:none}
.delay-1{transition-delay:.12s}
.delay-2{transition-delay:.24s}
.delay-3{transition-delay:.36s}

@media(max-width:980px){
  .main-nav{position:absolute;top:78px;left:0;right:0;background:#fff;display:none;flex-direction:column;padding:20px;border-bottom:1px solid var(--line)}
  .main-nav.open{display:flex}
  .menu-toggle{display:flex}
  .hero-grid,.split,.two-col,.contact-grid{grid-template-columns:1fr}
  .projects-grid,.expertise-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .timeline:before{left:8px}
  .timeline-item{grid-template-columns:1fr;gap:8px;padding-left:34px}
  .timeline-item:after{left:2px}
}
@media(max-width:640px){
  .projects-grid,.expertise-grid,.stats-grid{grid-template-columns:1fr}
  .hero{padding:54px 0}
  .hero h1{font-size:42px}
  .btn.secondary{margin-left:0;margin-top:10px}
  .site-footer .container{flex-direction:column;gap:12px}
}