:root{
  --black:#0A0A0A;
  --ink:#1A1A1A;
  --navy:#1C2940;
  --navy-soft:#33445E;
  --grey-700:#444444;
  --grey-500:#767676;
  --grey-300:#BDBDBD;
  --grey-100:#E6E6E6;
  --paper:#FFFFFF;
  --line:#D9D9D9;
  --maxw:1100px;
  --radius:3px;
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  background:var(--paper);
  color:var(--ink);
  line-height:1.5;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--navy);text-decoration:none;}
a:hover{color:var(--ink);}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px;}

/* ===== Header ===== */
header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;}
.logo{font-weight:700;letter-spacing:.02em;font-size:15px;color:var(--black);}
nav{display:flex;align-items:center;gap:28px;}
nav a{font-size:14px;color:var(--grey-700);transition:color .2s;}
nav a:hover{color:var(--navy);}
.lang-toggle{display:flex;border:1px solid var(--grey-300);border-radius:var(--radius);overflow:hidden;}
.lang-toggle button{
  background:none;border:none;color:var(--grey-500);font-size:12px;font-weight:600;
  padding:6px 12px;cursor:pointer;letter-spacing:.05em;
}
.lang-toggle button.active{background:var(--navy);color:#fff;}

/* ===== Hero ===== */
.hero{
  min-height:92vh;display:flex;align-items:center;
  padding:140px 0 89px;
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:61.8fr 38.2fr;gap:55px;align-items:center;}
.eyebrow{
  color:var(--navy);font-size:13px;font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;margin-bottom:18px;
}
.hero h1{font-size:48px;line-height:1.12;font-weight:800;letter-spacing:-.02em;color:var(--black);margin-bottom:21px;}
.hero h1 span{color:var(--navy);}
.hero p.lead{font-size:18px;color:var(--grey-700);max-width:560px;margin-bottom:34px;}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius);font-size:14px;font-weight:600;
  border:1px solid transparent;transition:background .15s,color .15s,border-color .15s;
  cursor:pointer;
}
.btn-primary{background:var(--navy);color:#fff;border-color:var(--navy);}
.btn-primary:hover{background:var(--ink);border-color:var(--ink);}
.btn-secondary{background:transparent;color:var(--ink);border:1px solid var(--grey-300);}
.btn-secondary:hover{border-color:var(--ink);}
.hero-photo{border-radius:var(--radius);overflow:hidden;aspect-ratio:1/1.05;background:var(--grey-100);}
.hero-photo img{width:100%;height:100%;object-fit:cover;}

/* ===== Section generic ===== */
section{padding:89px 0;border-bottom:1px solid var(--line);}
.section-head{margin-bottom:55px;max-width:640px;}
.section-head .eyebrow{margin-bottom:10px;}
.section-head h2{font-size:32px;font-weight:800;letter-spacing:-.01em;color:var(--black);margin-bottom:14px;}
.section-head p{color:var(--grey-700);font-size:16px;}

/* ===== About ===== */
.about-grid{display:grid;grid-template-columns:38.2fr 61.8fr;gap:55px;}
.about-grid h2{font-size:32px;font-weight:800;letter-spacing:-.01em;color:var(--black);}
.about-grid p{color:var(--grey-700);margin-bottom:16px;font-size:16px;}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:21px;margin-top:34px;border-top:2px solid var(--black);padding-top:21px;}
.stat{padding-top:2px;}
.stat .num{font-size:36px;font-weight:800;color:var(--navy);letter-spacing:-.01em;}
.stat .label{font-size:13px;color:var(--grey-500);margin-top:4px;text-transform:uppercase;letter-spacing:.06em;}

/* ===== Projects ===== */
.project{
  display:grid;grid-template-columns:61.8fr 38.2fr;gap:48px;align-items:center;
  padding:55px 0;border-top:1px solid var(--line);
}
.project:first-of-type{border-top:none;padding-top:0;}
.project.reverse{grid-template-columns:38.2fr 61.8fr;direction:rtl;}
.project.reverse > *{direction:ltr;}
.project-media{border-radius:var(--radius);overflow:hidden;background:var(--grey-100);}
.project-media img{width:100%;height:380px;object-fit:cover;}
.project-tag{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;color:var(--navy);margin-bottom:12px;
}
.project-tag.tag-wip{color:var(--grey-500);border:1px solid var(--grey-300);padding:3px 8px;border-radius:var(--radius);}
.project h3{font-size:24px;font-weight:700;color:var(--black);margin-bottom:12px;}
.project p{color:var(--grey-700);margin-bottom:18px;}
.meta-list{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:18px;}
.meta-list div{font-size:13px;color:var(--ink);}
.meta-list span{display:block;color:var(--grey-500);font-size:11px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:2px;}
.thumb-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:14px;}
.thumb-row img{height:90px;object-fit:cover;border-radius:3px;background:var(--grey-100);}

/* ===== Timeline / Experience ===== */
.timeline{border-top:1px solid var(--line);}
.tl-item{
  display:grid;grid-template-columns:170px 1fr;gap:32px;
  padding:26px 0;border-bottom:1px solid var(--line);
}
.tl-date{color:var(--grey-500);font-size:13px;padding-top:2px;}
.tl-role{font-size:17px;font-weight:700;color:var(--black);}
.tl-org{color:var(--navy);font-size:14px;font-weight:600;margin-bottom:8px;}
.tl-desc{color:var(--grey-700);font-size:14px;max-width:640px;}
.tl-note{display:inline-block;margin-top:8px;font-size:11px;color:var(--grey-500);border:1px solid var(--grey-300);padding:3px 8px;border-radius:var(--radius);}
.tl-photo{margin-top:10px;border-radius:3px;overflow:hidden;max-width:220px;}
.tl-photo img{width:100%;}

/* ===== Skills ===== */
.skills-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.skill-card{background:transparent;border:1px solid var(--line);border-radius:var(--radius);padding:24px;}
.skill-card h4{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--navy);font-weight:700;margin-bottom:14px;}
.skill-card ul{list-style:none;}
.skill-card li{color:var(--grey-700);font-size:14px;padding:5px 0;border-top:1px solid var(--line);}
.skill-card li:first-child{border-top:none;}

/* ===== Contact ===== */
.contact{border-bottom:none;}
.contact-grid{display:grid;grid-template-columns:61.8fr 38.2fr;gap:48px;align-items:start;border-top:2px solid var(--black);padding-top:55px;}
.contact h2{font-size:36px;font-weight:800;color:var(--black);letter-spacing:-.01em;margin-bottom:18px;}
.contact p{color:var(--grey-700);font-size:16px;margin-bottom:24px;max-width:480px;}
.contact-links{display:flex;flex-direction:column;gap:14px;}
.contact-links a{font-size:15px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:10px;}
.contact-links a:hover{color:var(--navy);}
.note-box{background:var(--grey-100);border-radius:var(--radius);padding:22px;font-size:14px;color:var(--grey-700);}

footer{padding:34px 0;text-align:center;color:var(--grey-500);font-size:13px;}

[data-lang]{display:none;}
[data-lang].active{display:block;}
span[data-lang].active{display:inline;}

@media(max-width:880px){
  .hero-grid,.about-grid,.project,.contact-grid{grid-template-columns:1fr;}
  .project.reverse{direction:ltr;}
  .hero{padding:120px 0 60px;min-height:auto;}
  .hero h1{font-size:34px;}
  .hero-photo{order:-1;max-width:220px;margin:0 auto 20px;}
  .skills-grid{grid-template-columns:1fr;}
  .tl-item{grid-template-columns:1fr;gap:6px;}
  nav{gap:14px;}
  nav a{display:none;}
  .stat-row{grid-template-columns:1fr 1fr 1fr;}
}