/* ===== Tokens ===== */
:root{
  --navy:#07172B;
  --navy-2:#0C2140;
  --graphite:#101820;
  --cyan:#2EC9D4;
  --cyan-soft:rgba(46,201,212,.14);
  --white:#FFFFFF;
  --gray:#A9B4C2;
  --gray-line:rgba(255,255,255,.10);
  --max:1120px;
  --radius:18px;
  --ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Poppins',system-ui,sans-serif;
  background:var(--navy);
  color:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:4px;border-radius:4px}
.container{width:min(var(--max),calc(100% - 48px));margin-inline:auto}
.accent{color:var(--cyan)}
.eyebrow{
  font-size:.78rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--cyan);font-weight:600;display:inline-flex;align-items:center;gap:12px
}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--cyan);display:inline-block}

/* ===== Header ===== */
.header{
  position:fixed;inset:0 0 auto 0;z-index:50;
  padding:22px 0;transition:padding .35s var(--ease),background .35s,box-shadow .35s;
}
.header.scrolled{
  padding:12px 0;background:rgba(7,23,43,.82);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 1px 0 var(--gray-line);
}
.header .container{display:flex;align-items:center;justify-content:space-between}
.logo{font-weight:700;font-size:1.05rem;letter-spacing:-.01em;display:flex;align-items:center;gap:10px;position:relative;z-index:60}
.logo i{width:9px;height:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 5px var(--cyan-soft)}
.nav{display:flex;align-items:center;gap:34px}
.nav a{font-size:.9rem;font-weight:500;color:var(--gray);position:relative;transition:color .25s}
.nav a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--cyan);transition:width .3s var(--ease)}
.nav a:hover,.nav a[aria-current="page"]{color:var(--white)}
.nav a:hover::after,.nav a[aria-current="page"]::after{width:100%}
.lang{display:inline-flex;border:1px solid var(--gray-line);border-radius:999px;padding:3px;gap:2px}
.lang a{padding:5px 12px;border-radius:999px;font-size:.78rem;font-weight:600;letter-spacing:.06em}
.lang a::after{display:none}
.lang a.on{background:var(--cyan);color:var(--navy)}
.burger{
  display:none;background:none;border:0;cursor:pointer;width:44px;height:44px;
  flex-direction:column;justify-content:center;align-items:center;gap:6px
}
.burger span{width:24px;height:2px;background:var(--white);transition:.3s var(--ease);transform-origin:center}
.burger.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* ===== Hero (Home) ===== */
.hero{min-height:100svh;display:grid;align-items:center;padding:140px 0 80px;position:relative}
.hero .grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center}
.hero h1{font-size:clamp(2.6rem,6vw,4.9rem);line-height:1.02;font-weight:700;letter-spacing:-.03em;margin:22px 0 26px}
.hero h1 .cursor{
  display:inline-block;width:.06em;height:.9em;background:var(--cyan);
  margin-left:.08em;vertical-align:-.08em;animation:blink 1.1s steps(2) infinite
}
@keyframes blink{50%{opacity:0}}
.hero p.lead{font-size:1.1rem;color:var(--gray);max-width:520px;margin-bottom:40px}
.actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:16px 28px;border-radius:999px;
  font-weight:600;font-size:.95rem;min-height:48px;
  transition:transform .3s var(--ease),box-shadow .3s,background .3s,color .3s,border-color .3s
}
.btn-primary{background:var(--cyan);color:var(--navy);box-shadow:0 10px 30px -10px rgba(46,201,212,.6)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 40px -12px rgba(46,201,212,.7)}
.btn-ghost{border:1px solid var(--gray-line);color:var(--white)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-3px)}
.btn svg{width:18px;height:18px}

.tags{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:56px;padding-top:28px;border-top:1px solid var(--gray-line)}
.tags span{font-size:.82rem;color:var(--gray);display:flex;align-items:center;gap:8px}
.tags span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--cyan)}

/* Photo inside a "browser window" frame */
.photo{position:relative;justify-self:end;width:min(100%,420px)}
.photo .frame{
  border-radius:var(--radius);overflow:hidden;background:var(--navy-2);
  border:1px solid var(--gray-line);box-shadow:0 40px 80px -30px rgba(0,0,0,.7);
  transform:rotate(-1.5deg);transition:transform .6s var(--ease)
}
.photo:hover .frame{transform:rotate(0)}
.photo .bar{display:flex;gap:6px;padding:12px 14px;border-bottom:1px solid var(--gray-line)}
.photo .bar i{width:9px;height:9px;border-radius:50%;background:var(--gray-line)}
.photo .bar i:first-child{background:var(--cyan)}
.photo img{aspect-ratio:4/5;object-fit:cover;width:100%}
.photo .chip{
  position:absolute;left:-28px;bottom:36px;background:var(--graphite);
  border:1px solid var(--gray-line);border-radius:12px;padding:12px 16px;
  font-size:.8rem;box-shadow:0 20px 40px -20px rgba(0,0,0,.8);
  animation:float 5s ease-in-out infinite
}
.photo .chip b{display:block;color:var(--cyan);font-size:1.05rem}
@keyframes float{50%{transform:translateY(-8px)}}
.hero-bg{
  position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:-1;
  background:
    radial-gradient(600px 400px at 85% 20%,rgba(46,201,212,.10),transparent 70%),
    linear-gradient(var(--gray-line) 1px,transparent 1px) 0 0/100% 96px,
    linear-gradient(90deg,var(--gray-line) 1px,transparent 1px) 0 0/96px 100%;
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.35),transparent 90%);
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.35),transparent 90%);
}

/* Social links */
.links{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.links a{
  display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:999px;
  border:1px solid var(--gray-line);font-size:.85rem;color:var(--gray);transition:.3s
}
.links a:hover{border-color:var(--cyan);color:var(--white);background:var(--cyan-soft)}
.links svg{width:16px;height:16px}

/* ===== About page ===== */
.page{padding:150px 0 90px}
.about{display:grid;grid-template-columns:.8fr 1.2fr;gap:72px;align-items:start}
.about .photo{justify-self:start;position:sticky;top:120px}
.about h1{font-size:clamp(2.2rem,4.5vw,3.6rem);line-height:1.08;letter-spacing:-.03em;margin:18px 0 28px}
.about .text p{color:var(--gray);font-size:1.05rem;margin-bottom:20px;max-width:60ch}
.about .text p strong{color:var(--white);font-weight:600}
.skills{margin:44px 0 0;padding-top:36px;border-top:1px solid var(--gray-line)}
.skills h2{font-size:.78rem;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);margin-bottom:22px}
.skills ul{list-style:none;counter-reset:item;display:grid;grid-template-columns:1fr 1fr;gap:14px 28px}
.skills li{display:flex;gap:12px;align-items:baseline;font-size:.95rem}
.skills li::before{content:counter(item,decimal-leading-zero);counter-increment:item;color:var(--cyan);font-weight:600;font-size:.8rem}
.switch{margin-top:48px;display:inline-flex;align-items:center;gap:12px;font-size:.9rem;color:var(--gray)}
.switch a{color:var(--cyan);font-weight:600;border-bottom:1px solid transparent;transition:.25s}
.switch a:hover{border-color:var(--cyan)}

/* ===== CTA band + Footer ===== */
.cta{margin-top:60px;padding:72px 0;background:var(--graphite);border-top:1px solid var(--gray-line);border-bottom:1px solid var(--gray-line)}
.cta .container{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.cta h2{font-size:clamp(1.5rem,3vw,2.2rem);line-height:1.15;letter-spacing:-.02em;max-width:22ch}
.footer{padding:34px 0;font-size:.82rem;color:var(--gray)}
.footer .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer a:hover{color:var(--cyan)}

/* ===== Reveal on scroll ===== */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.12s}
.reveal[data-delay="2"]{transition-delay:.24s}
.reveal[data-delay="3"]{transition-delay:.36s}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* ===== Responsive ===== */
@media (max-width:960px){
  .hero .grid,.about{grid-template-columns:1fr;gap:48px}
  .photo{justify-self:center;width:min(100%,360px)}
  .about .photo{position:static;justify-self:center}
  .photo .chip{left:12px;bottom:-18px}
}
@media (max-width:720px){
  .container{width:calc(100% - 40px)}
  .nav{
    position:fixed;inset:0;background:var(--navy);flex-direction:column;justify-content:center;
    gap:30px;transform:translateY(-100%);opacity:0;transition:transform .45s var(--ease),opacity .35s
  }
  .nav.open{transform:none;opacity:1}
  .nav a{font-size:1.4rem;font-weight:600;color:var(--white)}
  .lang a{font-size:.9rem}
  .burger{display:flex;position:relative;z-index:60}
  .hero{padding:120px 0 60px}
  .hero h1{font-size:clamp(2.3rem,11vw,3.2rem)}
  .btn{width:100%;justify-content:center}
  .tags{margin-top:40px}
  .skills ul{grid-template-columns:1fr}
  .page{padding:120px 0 60px}
}