:root{
  --bg:#0b1020;
  --bg2:#12172a;
  --panel:rgba(19,26,46,.72);
  --panel-strong:#171f37;
  --text:#f6f4fb;
  --muted:#b7bdcc;
  --line:rgba(255,255,255,.10);
  --accent:#d68fb4;
  --accent2:#8f7cff;
  --accent3:#72d7dc;
  --shadow:0 20px 70px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,system-ui,sans-serif;
  background:
    radial-gradient(circle at 15% 20%, rgba(143,124,255,.12), transparent 30%),
    radial-gradient(circle at 85% 10%, rgba(214,143,180,.12), transparent 28%),
    linear-gradient(180deg,var(--bg),#0a0e1a 70%);
  color:var(--text);
  min-height:100vh;
  overflow-x:hidden;
}

body.rtl{direction:rtl}
body.rtl .topbar,
body.rtl .hero,
body.rtl .split,
body.rtl .timeline-item,
body.rtl .contact-section{direction:rtl}

a{color:inherit;text-decoration:none}
p{line-height:1.75;color:var(--muted)}
h1,h2,h3{margin-top:0}
h1,h2{font-family:"Playfair Display",serif}
button{font:inherit}

.noise{
  position:fixed;inset:0;pointer-events:none;z-index:-1;
  opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 240 240' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.9'/%3E%3C/svg%3E");
}
.ambient{position:fixed;width:420px;height:420px;border-radius:50%;filter:blur(120px);z-index:-2;opacity:.22}
.ambient-a{background:var(--accent2);top:-120px;left:-150px}
.ambient-b{background:var(--accent);right:-160px;top:28vh}
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--accent),var(--accent2),var(--accent3));z-index:99}

.topbar{
  width:min(1180px,calc(100% - 32px));
  margin:16px auto 0;
  padding:12px 16px;
  position:sticky;top:12px;z-index:50;
  display:flex;align-items:center;gap:18px;
  border:1px solid var(--line);
  border-radius:18px;
  background:rgba(9,14,27,.72);
  backdrop-filter:blur(18px);
  box-shadow:0 12px 35px rgba(0,0,0,.18);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.05em;white-space:nowrap}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  color:#111;
  background:linear-gradient(145deg,#f7c7df,var(--accent2));
  box-shadow:0 0 24px rgba(214,143,180,.25);
}
.nav{margin-left:auto;display:flex;gap:18px}
body.rtl .nav{margin-left:0;margin-right:auto}
.nav a{font-size:.9rem;color:var(--muted);transition:.25s}
.nav a:hover{color:var(--text)}
.lang-btn,.menu-btn{
  border:1px solid var(--line);background:rgba(255,255,255,.05);color:var(--text);
  border-radius:12px;padding:9px 12px;cursor:pointer
}
.menu-btn{display:none}

main{width:min(1180px,calc(100% - 32px));margin:auto}
.hero{
  min-height:88vh;
  display:grid;grid-template-columns:1.35fr .65fr;
  gap:60px;align-items:center;padding:90px 0 70px
}
.eyebrow,.section-label{
  font-size:.78rem;font-weight:700;letter-spacing:.16em;color:var(--accent3)
}
.hero h1{font-size:clamp(3.2rem,7vw,6.6rem);line-height:.96;margin:18px 0 24px;max-width:900px}
.hero h1 em{display:block;font-style:normal;color:transparent;background:linear-gradient(90deg,#fff,var(--accent),var(--accent2));background-clip:text;-webkit-background-clip:text}
.hero-lead{max-width:720px;font-size:1.08rem}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0 34px}
.btn{padding:13px 18px;border-radius:14px;border:1px solid var(--line);font-weight:700;transition:.25s}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#0b0c12;border:none;box-shadow:0 12px 30px rgba(143,124,255,.22)}
.btn:hover{transform:translateY(-2px)}
.quick-facts{display:flex;gap:28px;flex-wrap:wrap}
.quick-facts div{display:flex;flex-direction:column;gap:4px;color:var(--muted);font-size:.82rem}
.fact-value{color:var(--text);font-weight:800;font-size:1rem}

.hero-card{
  position:relative;min-height:500px;border:1px solid var(--line);border-radius:34px;
  background:
    linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.01)),
    var(--panel);
  box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;justify-content:flex-end
}
.portrait-placeholder{
  position:absolute;inset:38px 38px 110px;border-radius:28px;
  display:grid;place-items:center;
  background:
   radial-gradient(circle at 55% 30%, rgba(214,143,180,.28), transparent 30%),
   linear-gradient(145deg,#202946,#11192d);
  border:1px solid rgba(255,255,255,.11)
}
.portrait-placeholder span{
  width:130px;height:130px;border-radius:50%;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.18);
  font-family:"Playfair Display",serif;font-size:2rem;letter-spacing:.08em;
  background:rgba(255,255,255,.04)
}
.hero-card-body{padding:24px 28px;display:flex;gap:10px;align-items:center;color:var(--muted);font-size:.9rem;position:relative;z-index:3}
.status-dot{width:9px;height:9px;border-radius:50%;background:#77e5b2;box-shadow:0 0 16px #77e5b2}
.orbit{position:absolute;border:1px solid rgba(255,255,255,.08);border-radius:50%}
.orbit-1{width:360px;height:360px;top:-150px;right:-150px}
.orbit-2{width:260px;height:260px;bottom:-110px;left:-120px}

.section{padding:95px 0;border-top:1px solid var(--line)}
.section-label{margin-bottom:30px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:70px}
.split h2,.contact-section h2,.research-content h2{font-size:clamp(2.1rem,4vw,4rem);line-height:1.05;margin-bottom:0}
.body-copy{font-size:1.05rem}

.timeline{display:grid;gap:18px}
.timeline-item{
  display:grid;grid-template-columns:120px 1fr;gap:28px;padding:28px;
  border:1px solid var(--line);border-radius:22px;background:var(--panel)
}
.year{font-size:1.4rem;font-weight:800;color:var(--accent)}
.timeline-item h3{font-size:1.3rem;margin-bottom:8px}
.muted{color:#929aad}

.research-card{
  padding:34px;border-radius:28px;border:1px solid var(--line);
  background:linear-gradient(145deg,rgba(214,143,180,.08),rgba(143,124,255,.08)),var(--panel);
  display:grid;grid-template-columns:160px 1fr;gap:34px;box-shadow:var(--shadow)
}
.research-index{
  width:140px;height:140px;border-radius:34px;display:grid;place-items:center;
  font-size:2rem;font-weight:900;letter-spacing:.08em;
  background:linear-gradient(145deg,var(--accent),var(--accent2));color:#11131d;
  box-shadow:0 18px 40px rgba(143,124,255,.22)
}
.pill{display:inline-flex;border:1px solid var(--line);padding:8px 11px;border-radius:999px;color:var(--accent3);font-size:.72rem;font-weight:800;letter-spacing:.1em}
.research-content h2{margin:20px 0 14px}
.research-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:26px}
.mini-card{padding:18px;border-radius:18px;background:rgba(255,255,255,.045);border:1px solid var(--line);display:flex;flex-direction:column;gap:8px}
.mini-card span{color:var(--muted);font-size:.9rem}

.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card,.cert{
  border:1px solid var(--line);border-radius:22px;background:var(--panel);padding:26px;transition:.25s
}
.card:hover,.cert:hover{transform:translateY(-4px);border-color:rgba(214,143,180,.35)}
.card-date{font-size:.78rem;color:var(--accent);font-weight:800;letter-spacing:.08em}
.card h3{margin:16px 0 6px;font-size:1.3rem}

.skills-layout{display:grid;gap:18px}
.skill-group{padding:26px;border:1px solid var(--line);border-radius:22px;background:var(--panel)}
.skill-group h3{margin-bottom:18px}
.tags{display:flex;gap:10px;flex-wrap:wrap}
.tags span{
  padding:10px 13px;border-radius:999px;background:rgba(255,255,255,.05);
  border:1px solid var(--line);color:#e7e8ef;font-size:.88rem
}

.cert-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.cert>span{font-size:2rem;color:var(--accent);font-weight:800}
.cert h3{margin:20px 0 6px}

.contact-section{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-card{display:grid;border:1px solid var(--line);border-radius:24px;overflow:hidden;background:var(--panel)}
.contact-card>a,.contact-card>div{padding:20px 22px;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:5px}
.contact-card>*:last-child{border-bottom:none}
.contact-card span{font-size:.75rem;color:var(--accent);font-weight:800;text-transform:uppercase;letter-spacing:.08em}
.contact-card strong{font-size:.95rem;word-break:break-word}

footer{
  width:min(1180px,calc(100% - 32px));margin:0 auto;padding:28px 0 42px;
  border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:.85rem
}

.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}

@media (max-width:900px){
  .nav{
    display:none;position:absolute;top:66px;left:0;right:0;margin:0!important;
    padding:14px;background:rgba(9,14,27,.96);border:1px solid var(--line);border-radius:16px;
    flex-direction:column
  }
  .nav.open{display:flex}
  .menu-btn{display:block;margin-left:auto}
  body.rtl .menu-btn{margin-left:0;margin-right:auto}
  .brand-text{display:none}
  .hero{grid-template-columns:1fr;padding-top:70px}
  .hero-card{min-height:430px}
  .split,.contact-section{grid-template-columns:1fr;gap:26px}
  .research-card{grid-template-columns:1fr}
  .cards,.cert-grid{grid-template-columns:1fr}
}

@media (max-width:620px){
  main,.topbar,footer{width:min(100% - 22px,1180px)}
  .hero h1{font-size:3.35rem}
  .quick-facts{gap:18px}
  .timeline-item{grid-template-columns:1fr}
  .research-grid{grid-template-columns:1fr}
  .research-card{padding:22px}
  .research-index{width:110px;height:110px;border-radius:28px}
  footer{flex-direction:column}
}