:root{
  --bg:#000000;
  --panel:#0C0D10;
  --panel-2:#15161A;
  --line:#26272D;
  --line-soft:#161719;
  --text:#E7EBF1;
  --muted:#8B94A4;
  --dim:#5A6373;
  --amber:#F7A23B;
  --amber-deep:#B76E1E;
  --cyan:#5BD1D8;
  --font-display:'Space Grotesk', system-ui, sans-serif;
  --font-mono:'IBM Plex Mono', ui-monospace, monospace;
  --font-body:-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --maxw:1080px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
::selection{background:var(--amber);color:#0E1116}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.mono{font-family:var(--font-mono);letter-spacing:.02em}
.eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan)}

/* ---------- nav ---------- */
header.nav{position:sticky;top:0;z-index:50;background:rgba(0,0,0,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line-soft)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{font-family:var(--font-mono);font-weight:500;font-size:14px;display:flex;align-items:center;gap:9px;letter-spacing:.02em}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 0 rgba(247,162,59,.5);animation:pulse 2.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(247,162,59,.45)}70%{box-shadow:0 0 0 7px rgba(247,162,59,0)}100%{box-shadow:0 0 0 0 rgba(247,162,59,0)}}
.nav-right{display:flex;align-items:center;gap:22px}
.nav-links{display:flex;gap:26px;font-family:var(--font-mono);font-size:13px}
.nav-links a{position:relative;color:var(--muted);transition:color .18s}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--amber)}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-5px;height:2px;background:var(--amber);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.lang-toggle{display:inline-flex;border:1px solid var(--line);border-radius:7px;overflow:hidden}
.lang-opt{font-family:var(--font-mono);font-size:12px;padding:5px 10px;color:var(--muted);cursor:pointer;background:none;border:none;transition:background .15s,color .15s}
.lang-opt.active{background:var(--amber);color:#0E1116}
.lang-opt:not(.active):hover{color:var(--text)}
.hamburger{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:36px;height:36px;padding:7px;border:1px solid var(--line);border-radius:8px;background:none;cursor:pointer;transition:border-color .18s}
.hamburger:hover{border-color:var(--amber)}
.hamburger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--text);transition:transform .3s ease,opacity .2s ease}
header.nav.open .hamburger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
header.nav.open .hamburger span:nth-child(2){opacity:0}
header.nav.open .hamburger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:680px){
  .hamburger{display:flex}
  .nav-right{gap:10px}
  .nav-links{position:fixed;top:60px;left:0;right:0;flex-direction:column;gap:0;background:rgba(0,0,0,.97);border-bottom:1px solid var(--line-soft);padding:6px 0;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .25s ease,transform .25s ease,visibility .25s}
  header.nav.open .nav-links{opacity:1;visibility:visible;transform:none}
  .nav-links a{padding:14px 28px;width:100%;font-size:15px}
  .nav-links a::after{display:none}
}

/* ---------- hero ---------- */
.hero{flex:1;display:flex;flex-direction:column;justify-content:center;padding:80px 0;position:relative}
.hero .eyebrow{margin-bottom:26px;display:block}
.hero::before{content:"";position:absolute;top:46%;left:18%;width:560px;height:560px;transform:translate(-35%,-50%);background:radial-gradient(circle,rgba(247,162,59,.11),transparent 68%);pointer-events:none;z-index:0;animation:breathe 7s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:.5;transform:translate(-35%,-50%) scale(1)}50%{opacity:1;transform:translate(-35%,-50%) scale(1.1)}}
.hero .wrap{position:relative;z-index:1}
.hero h1{font-family:var(--font-display);font-weight:600;font-size:clamp(44px,8.5vw,88px);line-height:1.02;letter-spacing:-.02em;margin-bottom:26px}
.hero h1 .accent{color:var(--amber);display:inline-block;animation:dotGlow 2.6s ease-in-out infinite}
@keyframes dotGlow{0%,100%{text-shadow:0 0 0 rgba(247,162,59,0)}50%{text-shadow:0 0 20px rgba(247,162,59,.75)}}
.hero .lede{font-size:clamp(17px,2.4vw,21px);color:var(--muted);max-width:640px;line-height:1.6}
.hero .lede strong{color:var(--text);font-weight:500}
.hero-note{font-family:var(--font-mono);font-size:13px;color:var(--dim);margin-top:26px;display:flex;align-items:center;gap:8px}
.hero-note .heart{color:var(--amber);display:inline-block;animation:heartBeat 2.4s ease-in-out infinite}
@keyframes heartBeat{0%,100%{transform:scale(1)}12%{transform:scale(1.28)}24%{transform:scale(1)}36%{transform:scale(1.18)}48%{transform:scale(1)}}
.meter{display:flex;align-items:flex-end;gap:3px;height:46px;margin-top:52px;opacity:.9}
.meter span{width:4px;border-radius:2px;background:linear-gradient(to top,var(--amber-deep),var(--amber));animation:lvl 1.4s ease-in-out infinite;transform-origin:bottom}
@keyframes lvl{0%,100%{transform:scaleY(.28)}50%{transform:scaleY(1)}}

/* ---------- section frame ---------- */
section{padding:76px 0;border-top:1px solid var(--line-soft)}
.sec-head{display:flex;align-items:baseline;gap:14px;margin-bottom:40px}
.sec-head .idx{font-family:var(--font-mono);font-size:13px;color:var(--amber)}
.sec-head h2{font-family:var(--font-display);font-weight:500;font-size:clamp(24px,4vw,34px);letter-spacing:-.01em}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1fr;gap:22px;max-width:700px}
.about-grid p{color:var(--muted);font-size:17px}
.about-grid p strong{color:var(--text);font-weight:500}

/* ---------- projects ---------- */
.projects{display:grid;gap:18px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:28px 30px;transition:border-color .2s,transform .2s,background .2s;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--amber);transform:scaleY(0);transform-origin:top;transition:transform .25s}
.card:hover{background:var(--panel-2);transform:translateY(-3px);box-shadow:0 20px 50px -34px rgba(0,0,0,.75)}
.card:hover::before{transform:scaleY(1)}
.card.featured{border-color:var(--amber-deep);box-shadow:0 22px 60px -34px rgba(247,162,59,.35)}
.card.featured::before{transform:scaleY(1);background:var(--amber)}
.card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;gap:12px}
.card-tag{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan)}
.card-year{font-family:var(--font-mono);font-size:12px;color:var(--dim)}
.card h3{font-family:var(--font-display);font-weight:600;font-size:22px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15.5px;max-width:660px}
.stack-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.chip{font-family:var(--font-mono);font-size:12px;color:var(--muted);background:var(--panel-2);border:1px solid var(--line);border-radius:6px;padding:4px 10px}
.card.featured .chip{background:#1a1206;border-color:#3a2a12;color:#e0a862}
.site-links{display:flex;flex-direction:column;gap:9px;margin-top:18px}
.site-links a{font-family:var(--font-mono);font-size:14px;color:var(--text);width:fit-content;border-bottom:1px solid var(--line);padding-bottom:2px;transition:border-color .18s,color .18s,transform .18s}
.site-links a:hover{border-color:var(--amber);color:var(--amber);transform:translateX(4px)}

/* ---------- stack ---------- */
.stack-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:26px}
.stack-col h4{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line-soft)}
.stack-col ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.stack-col li{font-size:15px;color:var(--muted);display:flex;align-items:center;gap:10px}
.stack-col li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--amber);flex-shrink:0}

/* ---------- contact ---------- */
.contact-inner{max-width:620px}
.contact-inner p{color:var(--muted);font-size:18px;margin-bottom:30px}
.contact-links{display:flex;flex-wrap:wrap;gap:14px}
.btn{font-family:var(--font-mono);font-size:14px;border:1px solid var(--line);border-radius:9px;padding:12px 20px;color:var(--text);display:inline-flex;align-items:center;gap:10px;transition:border-color .18s,background .18s,transform .15s,box-shadow .18s}
.btn:hover{border-color:var(--amber);background:var(--panel);transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn.primary{background:var(--amber);color:#0E1116;border-color:var(--amber);font-weight:500}
.btn.primary:hover{background:#ffb254;box-shadow:0 8px 26px -8px rgba(247,162,59,.55)}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line-soft);padding:34px 0}
.foot-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.foot-inner span{font-family:var(--font-mono);font-size:12px;color:var(--dim)}

/* ---------- reveal ---------- */
/* scroll reveal hides only when JS is active — content still shows if JS fails */
html.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
html.js .reveal.in{opacity:1;transform:none}
html.js .projects .card:nth-of-type(2){transition-delay:.08s}
html.js .projects .card:nth-of-type(3){transition-delay:.16s}
html.js .projects .card:nth-of-type(4){transition-delay:.24s}
html.js .about-grid p:nth-of-type(2){transition-delay:.06s}
html.js .about-grid p:nth-of-type(3){transition-delay:.12s}
html.js .about-grid p:nth-of-type(4){transition-delay:.18s}
html.js .about-grid p:nth-of-type(5){transition-delay:.24s}
html.js .about-grid p:nth-of-type(6){transition-delay:.30s}

/* hero entrance — pure CSS, no JS needed */
.hero-in{opacity:0;animation:heroIn .7s ease forwards;animation-delay:calc(var(--d,0) * 90ms)}
@keyframes heroIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

a:focus-visible,.btn:focus-visible,.lang-opt:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto}
  html.js .reveal{opacity:1!important;transform:none!important;transition:none}
  .hero-in{opacity:1;animation:none}
  .hero::before{animation:none;opacity:.4}
  .hero h1 .accent{animation:none}
  .meter span{transform:scaleY(.6)!important}
  .status-dot{animation:none}
}

/* ---------- multi-page ---------- */
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
body.page section{border-top:none;flex:1;display:flex;flex-direction:column;justify-content:center}
a.brand{cursor:pointer}