/* ═══════════════════════════════════════════════════════════
   ARBËR HOTI — 2026 · terminal-grade academic portfolio
   ═══════════════════════════════════════════════════════════ */
:root{
  --bg:#05070d;
  --bg2:#080d16;
  --panel:rgba(148,163,184,.045);
  --panel-hi:rgba(148,163,184,.09);
  --line:rgba(148,163,184,.14);
  --line-hi:rgba(56,225,255,.45);
  --text:#e8eef8;
  --muted:#8f9cb2;
  --dim:#5b6a82;
  --cyan:#38e1ff;
  --gold:#f5c66b;
  --green:#4ade80;
  --red:#ff6b7a;
  --font-d:"Space Grotesk",system-ui,sans-serif;
  --font-s:"Instrument Serif",Georgia,serif;
  --font-m:"JetBrains Mono",ui-monospace,Menlo,monospace;
  --ease:cubic-bezier(.22,1,.36,1);
  --nav-h:64px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
html:focus-within{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-d);
  font-size:16px;
  line-height:1.65;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
::selection{background:rgba(56,225,255,.25);color:#fff}
.mono{font-family:var(--font-m)}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
em{font-family:var(--font-s);font-style:italic;font-weight:400}

/* ── ambient layers ─────────────────────────────────────── */
#particles{position:fixed;inset:0;z-index:0;pointer-events:none}
.grid-overlay{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    linear-gradient(rgba(148,163,184,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(148,163,184,.035) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 20%,#000 30%,transparent 75%);
}
.noise{
  position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.5;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.06'/%3E%3C/svg%3E");
}
main,header,footer{position:relative;z-index:2}

/* ── custom cursor ──────────────────────────────────────── */
#cursor-dot,#cursor-ring{position:fixed;top:0;left:0;z-index:9999;pointer-events:none;border-radius:50%;transform:translate(-50%,-50%)}
#cursor-dot{width:6px;height:6px;background:var(--cyan)}
#cursor-ring{width:34px;height:34px;border:1px solid rgba(56,225,255,.5);transition:width .25s var(--ease),height .25s var(--ease),border-color .25s}
body.cursor-hot #cursor-ring{width:56px;height:56px;border-color:var(--gold)}
@media (hover:none),(pointer:coarse){#cursor-dot,#cursor-ring{display:none}}

/* ── preloader ──────────────────────────────────────────── */
#preloader{
  position:fixed;inset:0;z-index:10000;background:var(--bg);
  display:flex;align-items:center;justify-content:center;
  transition:opacity .6s var(--ease),visibility .6s;
}
#preloader.done{opacity:0;visibility:hidden}
.pre-inner{width:min(420px,80vw);text-align:left}
.pre-logo{color:var(--cyan);font-size:13px;letter-spacing:.2em;margin-bottom:18px}
.pre-bar{height:2px;background:rgba(148,163,184,.15);overflow:hidden;margin-bottom:12px}
#pre-fill{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--gold));transition:width .18s linear}
.pre-line{color:var(--dim);font-size:11px;min-height:18px}
.pre-pct{position:absolute;font-size:clamp(60px,12vw,120px);font-weight:300;color:rgba(148,163,184,.08);right:6vw;bottom:4vh;line-height:1}

/* ── scroll progress ────────────────────────────────────── */
#scroll-progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:9000;background:linear-gradient(90deg,var(--cyan),var(--gold))}

/* ── nav ────────────────────────────────────────────────── */
#nav{
  position:fixed;top:0;left:0;right:0;z-index:900;
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 clamp(16px,4vw,40px);
  background:rgba(5,7,13,.55);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s,background .3s;
}
#nav.scrolled{border-bottom-color:var(--line);background:rgba(5,7,13,.82)}
.nav-logo{font-weight:700;font-size:15px;letter-spacing:.06em}
.nav-logo .acc{color:var(--cyan)}
.nav-links{display:flex;gap:clamp(10px,2vw,26px)}
.nav-links a{
  font-family:var(--font-m);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted);position:relative;padding:6px 2px;transition:color .25s;
}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--cyan);transition:width .3s var(--ease)}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-links a.active::after,.nav-links a:hover::after{width:100%}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-clock{font-size:11px;color:var(--dim);letter-spacing:.08em}
.lang-toggle{font-size:11px;letter-spacing:.1em;color:var(--muted);border:1px solid var(--line);padding:5px 10px;border-radius:99px;transition:border-color .25s}
.lang-toggle:hover{border-color:var(--line-hi)}
.lang-toggle span.on{color:var(--cyan)}
.lang-toggle i{font-style:normal;opacity:.4;margin:0 3px}
.cmdk-hint{font-size:11px;color:var(--muted);border:1px solid var(--line);padding:5px 10px;border-radius:6px;transition:all .25s}
.cmdk-hint:hover{color:var(--cyan);border-color:var(--line-hi)}
.burger{display:none;flex-direction:column;gap:5px;padding:8px}
.burger span{width:22px;height:1.5px;background:var(--text);transition:transform .3s,opacity .3s}
body.menu-open .burger span:first-child{transform:translateY(3.2px) rotate(45deg)}
body.menu-open .burger span:last-child{transform:translateY(-3.2px) rotate(-45deg)}

/* ── hero ───────────────────────────────────────────────── */
.hero{min-height:100svh;display:flex;flex-direction:column;justify-content:center;padding:calc(var(--nav-h) + 40px) clamp(16px,6vw,80px) 80px;position:relative}
.hero-inner{max-width:1200px;width:100%;margin:0 auto}
.hero-status{display:inline-flex;align-items:center;gap:10px;font-size:11px;letter-spacing:.18em;color:var(--muted);border:1px solid var(--line);border-radius:99px;padding:8px 16px;margin-bottom:34px;background:rgba(5,7,13,.5)}
.hero-status-sep{opacity:.4}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero-name{font-size:clamp(44px,9.5vw,124px);line-height:.98;font-weight:700;letter-spacing:-.02em;margin-bottom:26px}
.hn-line{display:block;font-size:.32em;font-weight:400;margin-bottom:14px;color:var(--muted)}
.hn-line em{color:var(--gold);font-size:1.15em}
.hn-main{display:block}
.glitch{position:relative;display:inline-block}
.glitch::before,.glitch::after{
  content:attr(data-text);position:absolute;inset:0;opacity:0;pointer-events:none;
}
.glitch:hover::before{opacity:.8;color:var(--cyan);animation:gl1 .35s steps(2) infinite;clip-path:inset(0 0 55% 0)}
.glitch:hover::after{opacity:.8;color:var(--red);animation:gl2 .35s steps(2) infinite;clip-path:inset(55% 0 0 0)}
@keyframes gl1{0%{transform:translate(-3px,-2px)}50%{transform:translate(3px,1px)}100%{transform:translate(-2px,2px)}}
@keyframes gl2{0%{transform:translate(3px,2px)}50%{transform:translate(-3px,-1px)}100%{transform:translate(2px,-2px)}}
.gold{color:var(--gold)}
.hero-role{font-size:clamp(18px,2.6vw,26px);color:var(--text);font-weight:500;margin-bottom:8px}
.hero-sub{font-size:clamp(13px,1.6vw,16px);color:var(--muted);margin-bottom:38px}

.terminal{
  max-width:640px;border:1px solid var(--line);border-radius:10px;overflow:hidden;
  background:rgba(8,13,22,.75);backdrop-filter:blur(8px);
  box-shadow:0 20px 60px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.04);
  margin-bottom:38px;
}
.term-head{display:flex;align-items:center;gap:7px;padding:10px 14px;border-bottom:1px solid var(--line);font-size:11px;color:var(--dim)}
.t-dot{width:10px;height:10px;border-radius:50%}
.t-dot.r{background:#ff5f57}.t-dot.y{background:#febc2e}.t-dot.g{background:#28c840}
.term-title{margin-left:8px;letter-spacing:.06em}
.term-body{padding:16px 18px;font-size:13.5px;min-height:56px;color:var(--green);display:flex;align-items:baseline;gap:10px}
.t-prompt{color:var(--cyan)}
.t-caret{display:inline-block;width:8px;height:16px;background:var(--cyan);transform:translateY(2px);animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:56px}
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-m);font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;
  padding:13px 22px;border-radius:8px;border:1px solid var(--line);
  transition:all .3s var(--ease);position:relative;overflow:hidden;
}
.btn b{font-weight:400;transition:transform .3s var(--ease)}
.btn:hover b{transform:translate(3px,-2px)}
.btn-primary{background:var(--cyan);color:#031018;border-color:var(--cyan);font-weight:700}
.btn-primary:hover{box-shadow:0 0 34px rgba(56,225,255,.45);transform:translateY(-2px)}
.btn-ghost{color:var(--text);background:rgba(148,163,184,.05)}
.btn-ghost:hover{border-color:var(--line-hi);color:var(--cyan);transform:translateY(-2px)}

.hero-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden;max-width:820px}
.stat{background:rgba(8,13,22,.7);padding:22px 20px;display:flex;flex-direction:column;gap:6px}
.stat b{font-size:clamp(24px,3vw,34px);font-weight:700;color:var(--cyan)}
.stat span{font-size:12px;color:var(--muted);letter-spacing:.04em}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);font-size:10.5px;letter-spacing:.3em;color:var(--dim);text-transform:uppercase;animation:hint 2.4s infinite}
@keyframes hint{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* ── marquee ────────────────────────────────────────────── */
.marquee{border-block:1px solid var(--line);padding:16px 0;overflow:hidden;background:rgba(8,13,22,.5);position:relative;z-index:2}
.marquee-track{display:flex;gap:0;width:max-content;animation:marquee 40s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.mq-item{display:flex;align-items:center;gap:18px;padding:0 18px;white-space:nowrap;font-family:var(--font-m);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.mq-item b{color:var(--cyan);font-weight:400}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ── sections ───────────────────────────────────────────── */
.section{max-width:1200px;margin:0 auto;padding:clamp(70px,10vw,130px) clamp(16px,6vw,80px) 0}
.sec-head{display:flex;align-items:center;gap:18px;margin-bottom:clamp(34px,5vw,60px)}
.sec-num{font-size:12px;color:var(--cyan);border:1px solid var(--line-hi);border-radius:6px;padding:4px 9px;letter-spacing:.1em}
.sec-title{font-size:clamp(30px,5vw,52px);font-weight:700;letter-spacing:-.02em}
.sec-line{flex:1;height:1px;background:linear-gradient(90deg,var(--line),transparent)}
.sec-tag{font-size:10.5px;color:var(--dim);letter-spacing:.16em;white-space:nowrap}
.sec-intro{max-width:720px;color:var(--muted);margin-bottom:26px;font-size:15.5px}
.sub-head{font-size:12px;color:var(--cyan);letter-spacing:.18em;margin:44px 0 20px}

.lede{font-size:clamp(22px,3.2vw,32px);line-height:1.35;font-weight:500;margin-bottom:24px}
.lede em{color:var(--gold);font-size:1.06em}

/* ── about ──────────────────────────────────────────────── */
.about-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:clamp(28px,5vw,64px)}
.about-text p{color:var(--muted);margin-bottom:18px;font-size:15.5px}
.about-text .lede{color:var(--text)}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.chip{
  font-family:var(--font-m);font-size:11px;letter-spacing:.08em;color:var(--muted);
  border:1px solid var(--line);border-radius:99px;padding:6px 13px;
  transition:all .25s var(--ease);cursor:default;
}
.chip:hover{color:var(--cyan);border-color:var(--line-hi);transform:translateY(-2px)}
.about-side{display:flex;flex-direction:column;gap:18px}
.panel{border:1px solid var(--line);border-radius:12px;background:var(--panel);overflow:hidden}
.panel-head{font-size:11px;color:var(--cyan);letter-spacing:.16em;padding:13px 18px;border-bottom:1px solid var(--line);background:rgba(56,225,255,.04)}
.facts{list-style:none;padding:8px 0}
.facts li{display:flex;gap:12px;padding:10px 18px;font-size:12.5px;color:var(--muted);border-bottom:1px dashed rgba(148,163,184,.08)}
.facts li:last-child{border-bottom:none}
.facts li b{color:var(--text);font-weight:500;min-width:78px}
.cred-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line)}
.cred{background:var(--bg2);padding:16px;display:flex;flex-direction:column;gap:4px}
.cred b{color:var(--gold);font-size:17px}
.cred span{font-size:11.5px;color:var(--muted)}

/* ── timeline ───────────────────────────────────────────── */
.timeline{position:relative;padding-left:34px}
.tl-spine{position:absolute;left:8px;top:6px;bottom:6px;width:1px;background:var(--line)}
.tl-spine::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,var(--cyan),var(--gold));transform-origin:top;transform:scaleY(var(--spine,0))}
.tl-item{position:relative;padding:0 0 42px 26px}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:8px;width:9px;height:9px;border-radius:50%;
  background:var(--bg);border:2px solid var(--cyan);box-shadow:0 0 14px rgba(56,225,255,.5);
}
.tl-item.now::before{background:var(--cyan);animation:pulse 2s infinite}
.tl-when{font-family:var(--font-m);font-size:11px;color:var(--cyan);letter-spacing:.14em;text-transform:uppercase;margin-bottom:6px}
.tl-what{font-size:clamp(18px,2.4vw,23px);font-weight:600;margin-bottom:3px}
.tl-where{font-family:var(--font-m);font-size:12px;color:var(--gold);margin-bottom:12px}
.tl-points{list-style:none}
.tl-points li{color:var(--muted);font-size:14px;padding:4px 0 4px 20px;position:relative}
.tl-points li::before{content:"▸";position:absolute;left:0;color:var(--cyan);font-size:11px;top:7px}
.tl-badge{display:inline-block;font-family:var(--font-m);font-size:9.5px;letter-spacing:.14em;color:#031018;background:var(--green);border-radius:4px;padding:2px 8px;margin-left:10px;vertical-align:middle;font-weight:700}

/* ── education ──────────────────────────────────────────── */
.edu-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:16px}
.edu-card{
  border:1px solid var(--line);border-radius:12px;padding:24px;background:var(--panel);
  transition:all .35s var(--ease);position:relative;overflow:hidden;
}
.edu-card::before{content:"";position:absolute;inset:0;background:radial-gradient(400px 200px at var(--mx,50%) var(--my,0%),rgba(56,225,255,.09),transparent 60%);opacity:0;transition:opacity .3s}
.edu-card:hover::before{opacity:1}
.edu-card:hover{transform:translateY(-4px);border-color:var(--line-hi)}
.edu-deg{font-size:17.5px;font-weight:600;margin-bottom:6px;line-height:1.35}
.edu-school{font-family:var(--font-m);font-size:12px;color:var(--gold);margin-bottom:4px}
.edu-when{font-family:var(--font-m);font-size:11px;color:var(--cyan);letter-spacing:.12em;margin-bottom:12px}
.edu-desc{font-size:13.5px;color:var(--muted)}
.edu-flag{position:absolute;top:18px;right:18px;font-family:var(--font-m);font-size:10px;color:var(--dim);letter-spacing:.1em}
.certs-strip{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cert-tag{font-size:11px;letter-spacing:.06em;color:var(--muted);border:1px dashed var(--line);border-radius:8px;padding:8px 13px;transition:all .25s}
.cert-tag:hover{color:var(--gold);border-color:rgba(245,198,107,.5)}

/* ── research ───────────────────────────────────────────── */
.pub-list{display:flex;flex-direction:column;gap:12px}
.pub{
  display:grid;grid-template-columns:44px 1fr;gap:18px;
  border:1px solid var(--line);border-radius:12px;padding:20px 22px;background:var(--panel);
  transition:all .3s var(--ease);transform-style:preserve-3d;
}
.pub:hover{border-color:var(--line-hi);background:var(--panel-hi)}
.pub-num{font-family:var(--font-m);font-size:12px;color:var(--dim);padding-top:3px}
.pub-title{font-size:15.5px;font-weight:500;line-height:1.5;margin-bottom:8px}
.pub-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.pub-venue{font-family:var(--font-m);font-size:11px;color:var(--muted)}
.tag{font-family:var(--font-m);font-size:9.5px;letter-spacing:.1em;padding:3px 8px;border-radius:4px;font-weight:700}
.tag.scopus{background:rgba(56,225,255,.14);color:var(--cyan)}
.tag.wos{background:rgba(245,198,107,.14);color:var(--gold)}
.tag.role{background:rgba(74,222,128,.12);color:var(--green)}
.mono-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px}
.mono-card{border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:10px;padding:18px 20px;background:var(--panel);transition:all .3s var(--ease)}
.mono-card:hover{transform:translateX(4px);border-left-color:var(--cyan)}
.mono-card h4{font-family:var(--font-s);font-style:italic;font-weight:400;font-size:16.5px;line-height:1.45;margin-bottom:8px}
.mono-card p{font-size:12.5px;color:var(--muted)}
.pub-links{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}

/* ── teaching ───────────────────────────────────────────── */
.teach-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:34px}
.course-list{list-style:none;padding:10px 0}
.course-list li{display:flex;align-items:center;gap:12px;padding:9px 18px;font-size:14px;color:var(--muted);border-bottom:1px dashed rgba(148,163,184,.08);transition:all .2s}
.course-list li:last-child{border-bottom:none}
.course-list li:hover{color:var(--text);padding-left:24px}
.course-list li::before{content:"◆";font-size:8px;color:var(--cyan)}
.philosophy{position:relative;border:1px solid var(--line);border-radius:14px;padding:clamp(28px,4vw,44px);background:linear-gradient(135deg,rgba(56,225,255,.05),rgba(245,198,107,.05));overflow:hidden}
.philosophy .q-mark{position:absolute;top:-14px;left:20px;font-family:var(--font-s);font-size:110px;color:rgba(245,198,107,.25);line-height:1}
.philosophy p{font-family:var(--font-s);font-style:italic;font-size:clamp(18px,2.6vw,24px);line-height:1.55;color:var(--text);position:relative}

/* ── apps ───────────────────────────────────────────────── */
.app-filters{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:26px}
.af-btn{
  font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);
  border:1px solid var(--line);border-radius:99px;padding:8px 16px;transition:all .25s var(--ease);
}
.af-btn:hover{color:var(--text);border-color:var(--line-hi)}
.af-btn.on{background:var(--cyan);color:#031018;border-color:var(--cyan);font-weight:700}
.af-btn i{font-style:normal;opacity:.55;margin-left:5px;font-size:9.5px}
.apps-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:14px}
.app-card{
  border:1px solid var(--line);border-radius:12px;padding:20px;background:var(--panel);
  display:flex;flex-direction:column;gap:10px;min-height:170px;
  transition:all .35s var(--ease);position:relative;overflow:hidden;
}
.app-card::after{content:"";position:absolute;inset:0;background:radial-gradient(300px 160px at var(--mx,50%) var(--my,0%),rgba(56,225,255,.1),transparent 65%);opacity:0;transition:opacity .3s}
.app-card:hover::after{opacity:1}
.app-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:0 16px 40px rgba(0,0,0,.35)}
.app-top{display:flex;justify-content:space-between;align-items:center}
.app-glyph{font-family:var(--font-m);font-size:17px;color:var(--cyan)}
.app-cat{font-family:var(--font-m);font-size:9px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);border:1px solid var(--line);border-radius:4px;padding:3px 7px}
.app-name{font-size:15px;font-weight:600;line-height:1.35}
.app-desc{font-size:12.5px;color:var(--muted);flex:1}
.app-link{font-family:var(--font-m);font-size:11px;color:var(--cyan);letter-spacing:.08em;display:flex;align-items:center;gap:6px}
.app-card:hover .app-link{gap:10px}
.app-link::after{content:"→";transition:inherit}

/* ── engagements ────────────────────────────────────────── */
.eng-tabs{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:26px}
.eng-list{display:flex;flex-direction:column;gap:10px}
.eng-item{
  display:grid;grid-template-columns:110px 1fr;gap:18px;align-items:baseline;
  border:1px solid var(--line);border-radius:10px;padding:16px 20px;background:var(--panel);
  transition:all .25s var(--ease);
}
.eng-item:hover{border-color:var(--line-hi);transform:translateX(5px)}
.eng-when{font-family:var(--font-m);font-size:11px;color:var(--cyan);letter-spacing:.08em}
.eng-what b{display:block;font-size:14.5px;font-weight:600;margin-bottom:3px}
.eng-what span{font-size:12.5px;color:var(--muted)}
.eng-what a{color:var(--cyan);border-bottom:1px dashed rgba(56,225,255,.4)}

/* ── contact ────────────────────────────────────────────── */
.contact-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:clamp(28px,5vw,60px)}
.contact-rows{display:flex;flex-direction:column;gap:10px;margin-top:26px}
.contact-row{
  display:grid;grid-template-columns:90px 1fr 30px;align-items:center;gap:14px;
  border:1px solid var(--line);border-radius:10px;padding:16px 20px;background:var(--panel);
  transition:all .3s var(--ease);cursor:pointer;
}
.contact-row:hover{border-color:var(--line-hi);transform:translateX(5px);background:var(--panel-hi)}
.cr-key{font-size:10px;color:var(--dim);letter-spacing:.14em}
.cr-val{font-size:15px;color:var(--text)}
.contact-row b{color:var(--cyan);justify-self:end;transition:transform .3s}
.contact-row:hover b{transform:translate(3px,-3px)}
.profile-links{display:flex;flex-direction:column}
.profile-links a{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px dashed rgba(148,163,184,.08);font-size:13.5px;color:var(--muted);transition:all .2s}
.profile-links a:last-child{border-bottom:none}
.profile-links a:hover{color:var(--cyan);padding-left:24px}
.profile-links a::after{content:"↗";color:var(--dim)}
.profile-links a:hover::after{color:var(--cyan)}

/* ── footer ─────────────────────────────────────────────── */
footer{border-top:1px solid var(--line);margin-top:clamp(70px,10vw,130px);background:rgba(5,7,13,.7)}
.foot-inner{max-width:1200px;margin:0 auto;padding:26px clamp(16px,6vw,80px);display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;font-size:11px;color:var(--dim);letter-spacing:.1em}
.foot-status{display:flex;align-items:center;gap:8px}

/* ── command palette ────────────────────────────────────── */
#cmdk{position:fixed;inset:0;z-index:9500;display:flex;align-items:flex-start;justify-content:center;padding-top:14vh}
#cmdk[hidden]{display:none}
.cmdk-backdrop{position:absolute;inset:0;background:rgba(3,5,9,.7);backdrop-filter:blur(6px)}
.cmdk-box{
  position:relative;width:min(600px,92vw);border:1px solid var(--line-hi);border-radius:14px;
  background:rgba(8,13,22,.96);box-shadow:0 40px 120px rgba(0,0,0,.7),0 0 0 1px rgba(56,225,255,.08),0 0 60px rgba(56,225,255,.06);
  overflow:hidden;animation:cmdk-in .22s var(--ease);
}
@keyframes cmdk-in{from{opacity:0;transform:translateY(-14px) scale(.98)}to{opacity:1;transform:none}}
.cmdk-input-row{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--line)}
.cmdk-input-row input{flex:1;background:none;border:none;outline:none;color:var(--text);font-family:var(--font-m);font-size:14px}
.cmdk-input-row input::placeholder{color:var(--dim)}
.cmdk-input-row kbd{font-size:9.5px;color:var(--dim);border:1px solid var(--line);border-radius:4px;padding:2px 6px}
.cmdk-list{list-style:none;max-height:46vh;overflow-y:auto;padding:8px}
.cmdk-list::-webkit-scrollbar{width:6px}
.cmdk-list::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
.cmdk-item{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:8px;cursor:pointer;font-size:13.5px;color:var(--muted)}
.cmdk-item .ci-ico{font-family:var(--font-m);color:var(--cyan);width:20px;text-align:center}
.cmdk-item .ci-hint{margin-left:auto;font-family:var(--font-m);font-size:10px;color:var(--dim);letter-spacing:.08em}
.cmdk-item.sel{background:rgba(56,225,255,.1);color:var(--text)}
.cmdk-item.sel .ci-ico{color:var(--gold)}
.cmdk-empty{padding:26px;text-align:center;color:var(--dim);font-family:var(--font-m);font-size:12px}
.cmdk-foot{display:flex;gap:18px;padding:11px 18px;border-top:1px solid var(--line);font-size:10px;color:var(--dim);letter-spacing:.06em}

/* ── toast ──────────────────────────────────────────────── */
#toast{
  position:fixed;bottom:28px;left:50%;transform:translate(-50%,80px);z-index:9800;
  background:rgba(8,13,22,.95);border:1px solid var(--line-hi);border-radius:10px;
  color:var(--cyan);font-size:12px;letter-spacing:.08em;padding:12px 22px;
  transition:transform .4s var(--ease);box-shadow:0 12px 40px rgba(0,0,0,.5);pointer-events:none;
}
#toast.show{transform:translate(-50%,0)}

/* ── reveal animation ───────────────────────────────────── */
.reveal,.rv{opacity:0;transform:translateY(26px);filter:blur(4px);transition:opacity .8s var(--ease),transform .8s var(--ease),filter .8s var(--ease)}
.reveal.in,.rv.in{opacity:1;transform:none;filter:none}
.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}

/* ── to-top progress ring ───────────────────────────────── */
#to-top{
  position:fixed;right:24px;bottom:24px;z-index:850;width:54px;height:54px;border-radius:50%;
  background:rgba(8,13,22,.5);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border:1px solid var(--line);display:grid;place-items:center;
  opacity:0;transform:translateY(20px) scale(.85);pointer-events:none;
  transition:opacity .35s var(--ease),transform .35s var(--ease),border-color .3s,box-shadow .3s;
}
#to-top.show{opacity:1;transform:none;pointer-events:auto}
#to-top:hover{border-color:var(--line-hi);box-shadow:0 0 28px rgba(56,225,255,.28)}
#to-top svg{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg)}
.tt-bg{fill:none;stroke:rgba(148,163,184,.16);stroke-width:2}
.tt-ring{
  fill:none;stroke:var(--cyan);stroke-width:2;stroke-linecap:round;
  stroke-dasharray:119.4;stroke-dashoffset:119.4;
  filter:drop-shadow(0 0 4px rgba(56,225,255,.65));
}
#tt-pct{font-size:10px;color:var(--cyan);letter-spacing:.02em;user-select:none}
#to-top.maxed .tt-ring{stroke:var(--gold);filter:drop-shadow(0 0 5px rgba(245,198,107,.65))}
#to-top.maxed #tt-pct{color:var(--gold)}

/* ── side dot navigation ────────────────────────────────── */
#dots{position:fixed;right:24px;top:50%;transform:translateY(-50%);z-index:840;display:flex;flex-direction:column;gap:13px}
#dots button{position:relative;width:9px;height:9px;border-radius:50%;background:rgba(148,163,184,.3);transition:all .3s var(--ease);padding:0}
#dots button:hover{background:var(--muted)}
#dots button.on{background:var(--cyan);box-shadow:0 0 12px var(--cyan);transform:scale(1.45)}
#dots button::after{
  content:attr(data-label);position:absolute;right:22px;top:50%;
  transform:translateY(-50%) translateX(8px);
  font-family:var(--font-m);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);background:rgba(8,13,22,.92);border:1px solid var(--line-hi);
  border-radius:5px;padding:4px 9px;white-space:nowrap;opacity:0;pointer-events:none;
  transition:all .25s var(--ease);
}
#dots button:hover::after{opacity:1;transform:translateY(-50%)}
@media (max-width:1100px){#dots{display:none}}

/* ── expertise radar ────────────────────────────────────── */
.radar-wrap{padding:8px 4px 2px;display:flex;justify-content:center}
#radar{width:100%;max-width:310px;height:252px;display:block}

/* ── matrix easter egg ──────────────────────────────────── */
#matrix{position:fixed;inset:0;z-index:9400;pointer-events:none;opacity:0;transition:opacity .6s}
#matrix.on{opacity:.55}

/* ── section title letter stagger ───────────────────────── */
.sec-title{perspective:500px}
.sec-title .st-ch{display:inline-block;opacity:0;transform:translateY(.55em) rotateX(75deg);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.sec-title.in .st-ch{opacity:1;transform:none}

/* ── print (CV export) ──────────────────────────────────── */
@media print{
  #particles,.grid-overlay,.noise,#cursor-dot,#cursor-ring,#scroll-progress,
  #nav,#preloader,.marquee,#cmdk,#toast,.scroll-hint,.hero-cta,#to-top,#dots,#matrix,
  .app-filters,.eng-tabs,.pub-links,footer,.term-head .t-dot{display:none!important}
  body{background:#fff;color:#111;font-size:11px}
  main,header,footer{z-index:auto}
  .hero{min-height:auto;padding:0 0 12pt}
  .hero-name{font-size:30pt;margin-bottom:8pt}
  .hn-line{font-size:11pt}
  .hero-role{font-size:14pt}
  .hero-sub{font-size:10pt;margin-bottom:10pt}
  .terminal{border:1px solid #ccc;box-shadow:none;margin-bottom:12pt}
  .term-body{color:#0a6b2f;font-size:9pt;min-height:auto;padding:8pt 10pt}
  .hero-stats{border:1px solid #ccc;background:none}
  .stat{background:#fff;padding:10pt}
  .stat b{color:#111}
  .section{padding:14pt 0 0;max-width:none}
  .sec-head{margin-bottom:10pt}
  .sec-title{font-size:16pt}
  .sec-num,.sec-tag{color:#555;border-color:#ccc}
  .sec-line{background:#ccc}
  .about-grid,.contact-grid,.teach-grid{grid-template-columns:1fr 1fr;gap:12pt}
  .panel,.edu-card,.pub,.mono-card,.app-card,.eng-item,.contact-row,.philosophy{
    border:1px solid #ccc;background:#fff;box-shadow:none;break-inside:avoid}
  .tl-item{padding-bottom:14pt}
  .tl-when,.edu-when,.eng-when,.cr-key,.panel-head,.sub-head{color:#444}
  .tl-where,.edu-school,.cred b,.app-link,.chip,.stat b{color:#222}
  .tl-what,.edu-deg,.app-name,.lede,.philosophy p{color:#000}
  .tl-points li,.edu-desc,.app-desc,.eng-what span,.facts li,.course-list li,.about-text p,.sec-intro{color:#333}
  .tag{border:1px solid #999;color:#333;background:none}
  .reveal,.rv{opacity:1!important;transform:none!important;filter:none!important}
  .apps-grid{grid-template-columns:1fr 1fr}
  a[href^="http"]::after{content:"";display:none}
  .t-caret{display:none}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal,.rv{opacity:1;transform:none;filter:none}
}

/* ── responsive ─────────────────────────────────────────── */
@media (max-width:900px){
  .nav-links{
    position:fixed;inset:var(--nav-h) 0 auto 0;flex-direction:column;gap:0;
    background:rgba(5,7,13,.97);border-bottom:1px solid var(--line);
    padding:12px 0;transform:translateY(-130%);transition:transform .4s var(--ease);
    backdrop-filter:blur(16px);
  }
  body.menu-open .nav-links{transform:none}
  .nav-links a{padding:14px 24px;font-size:13px}
  .burger{display:flex}
  .nav-clock{display:none}
  .about-grid,.contact-grid{grid-template-columns:1fr}
  .teach-grid{grid-template-columns:1fr}
  .eng-item{grid-template-columns:1fr;gap:4px}
  .sec-tag{display:none}
  .pre-pct{font-size:60px}
}