@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;600&display=swap');

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
button{font-family:inherit;cursor:pointer}

/* ── TOKENS ── */
:root{
  --accent:#FF3B3B;
  --accent-dim:rgba(255,59,59,.12);
  --accent-glow:rgba(255,59,59,.22);
  --teal:#1B7F6B;
  --teal-dim:rgba(27,127,107,.12);

  --bg:#090b10;
  --bg2:#0d1018;
  --surface:#121620;
  --surface2:#1a2030;
  --border:rgba(255,255,255,.07);
  --fg:#e2e8f4;
  --muted:#8892a4;
  --faint:rgba(255,255,255,.04);

  --font:'Inter',system-ui,sans-serif;
  --mono:'JetBrains Mono','Fira Code',monospace;
  --ease:cubic-bezier(.22,1,.36,1);
  --r:16px;
}

[data-theme="light"]{
  --bg:#f4f6fa;
  --bg2:#eceef5;
  --surface:#ffffff;
  --surface2:#f0f3fa;
  --border:rgba(0,0,0,.08);
  --fg:#0d1117;
  --muted:#5a6478;
  --faint:rgba(0,0,0,.03);
  --accent:#D42B2B;
  --accent-dim:rgba(212,43,43,.08);
  --accent-glow:rgba(212,43,43,.18);
}

/* ── BASE ── */
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--fg);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  transition:background .3s,color .3s;
}
.wrap{max-width:1100px;margin:0 auto;padding:0 48px}

/* ── LANGUAGE ── */
html[lang="en"] .t-cs{display:none!important}
html[lang="cs"] .t-en{display:none!important}

/* ── NAV ── */
.nav{
  position:fixed;top:0;left:0;right:0;
  z-index:100;height:64px;padding:0 48px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  transition:background .4s,border-color .4s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(9,11,16,.88);
  backdrop-filter:blur(20px) saturate(180%);
  -webkit-backdrop-filter:blur(20px) saturate(180%);
  border-color:var(--border);
}
[data-theme="light"] .nav.scrolled{background:rgba(244,246,250,.92)}

.nav-brand{
  font-family:var(--mono);font-weight:600;font-size:15px;
  letter-spacing:-.3px;
}
.nav-brand em{color:var(--accent);font-style:normal}

.nav-links{
  display:flex;align-items:center;gap:28px;list-style:none;
}
.nav-links a{font-size:13px;font-weight:500;color:var(--muted);transition:color .2s}
.nav-links a:hover{color:var(--fg)}

.nav-actions{display:flex;align-items:center;gap:8px}

.nav-btn{
  height:34px;padding:0 14px;
  border-radius:9px;border:1px solid var(--border);
  background:var(--faint);color:var(--muted);
  font-size:12px;font-weight:700;letter-spacing:.5px;
  display:flex;align-items:center;gap:6px;
  transition:background .2s,color .2s,border-color .2s;
}
.nav-btn:hover{background:var(--surface2);color:var(--fg);border-color:var(--accent)}

/* ── HERO ── */
.hero{
  min-height:100vh;
  display:flex;align-items:center;
  position:relative;overflow:hidden;
  padding:100px 48px 60px;
}

.hero-bg{position:absolute;inset:0;pointer-events:none;z-index:0}
.hero-bg::before{
  content:'';position:absolute;inset:0;
  background-image:radial-gradient(circle,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:30px 30px;
}
.hero-bg::after{
  content:'';position:absolute;
  top:-200px;right:-150px;
  width:700px;height:700px;
  background:radial-gradient(circle,rgba(255,59,59,.11),transparent 60%);
  border-radius:50%;
  pointer-events:none;
}
[data-theme="light"] .hero-bg::before{
  background-image:radial-gradient(circle,rgba(0,0,0,.07) 1px,transparent 1px);
}
[data-theme="light"] .hero-bg::after{
  background:radial-gradient(circle,rgba(212,43,43,.07),transparent 60%);
}

.hero-inner{
  position:relative;z-index:1;
  max-width:1100px;margin:0 auto;width:100%;
  display:grid;grid-template-columns:1fr 400px;
  gap:60px;align-items:center;
}

.hero-left{display:flex;flex-direction:column}

.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent-dim);
  border:1px solid rgba(255,59,59,.22);
  color:var(--accent);
  border-radius:20px;padding:5px 14px;
  font-size:12px;font-weight:600;
  margin-bottom:28px;width:fit-content;
}
.hero-tag::before{
  content:'';width:6px;height:6px;
  background:var(--accent);border-radius:50%;
  animation:pulse 2s ease-in-out infinite;flex-shrink:0;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.65)}}

.hero-name{
  font-size:clamp(56px,8.5vw,100px);
  font-weight:900;line-height:.92;letter-spacing:-4px;
  margin-bottom:22px;
}
.hero-name em{
  font-style:normal;
  background:linear-gradient(135deg,var(--accent),#FF8080);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}

.hero-roles{
  font-family:var(--mono);
  font-size:clamp(13px,1.5vw,15px);
  color:var(--muted);
  margin-bottom:24px;
  min-height:22px;
  display:flex;align-items:center;gap:0;
}
.hero-cursor{
  display:inline-block;width:2px;height:15px;
  background:var(--accent);margin-left:3px;
  animation:blink .9s step-end infinite;
  vertical-align:middle;flex-shrink:0;
}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}

.hero-tagline{
  font-size:17px;color:var(--muted);line-height:1.7;
  max-width:460px;margin-bottom:38px;
}

.hero-btns{display:flex;align-items:center;gap:10px;flex-wrap:wrap}

.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent);color:#fff;
  padding:13px 24px;border-radius:12px;
  font-size:14px;font-weight:700;
  box-shadow:0 4px 24px var(--accent-glow);
  transition:opacity .2s,transform .2s;
}
.btn-primary:hover{opacity:.88;transform:translateY(-2px)}

.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--faint);color:var(--muted);
  padding:13px 22px;border-radius:12px;
  font-size:14px;font-weight:600;
  border:1px solid var(--border);
  transition:background .2s,color .2s,transform .2s;
}
.btn-ghost:hover{background:var(--surface2);color:var(--fg);transform:translateY(-2px)}

/* ── TERMINAL ── */
.terminal{
  background:#0d1117;
  border:1px solid rgba(255,255,255,.1);
  border-radius:16px;overflow:hidden;
  box-shadow:0 24px 70px rgba(0,0,0,.55),0 0 0 1px rgba(255,59,59,.06);
  font-family:var(--mono);font-size:13px;
  transform:perspective(800px) rotateY(-4deg) rotateX(3deg);
  transition:transform .4s var(--ease);
}
.terminal:hover{transform:perspective(800px) rotateY(0) rotateX(0)}

[data-theme="light"] .terminal{
  border-color:rgba(255,255,255,.12);
  box-shadow:0 24px 70px rgba(0,0,0,.18),0 0 0 1px rgba(212,43,43,.08);
}

.terminal-bar{
  display:flex;align-items:center;gap:6px;
  padding:11px 16px;
  background:rgba(255,255,255,.04);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.dot{width:12px;height:12px;border-radius:50%}
.dot-r{background:#FF5F57}.dot-y{background:#FEBC2E}.dot-g{background:#28C840}
.term-title{margin-left:auto;font-size:11px;color:rgba(255,255,255,.28)}

.terminal-body{padding:18px 20px;line-height:1.75;min-height:160px}

.tl{display:block;opacity:0;transition:opacity .2s}
.tl.show{opacity:1}
.tp{color:#FF3B3B;user-select:none;margin-right:8px}
.tc{color:#c9d1d9}
.to{color:#7ee787;margin-left:0}
.to-m{color:rgba(255,255,255,.4)}
.tcursor{animation:blink .9s step-end infinite;color:#FF3B3B}

/* ── SECTIONS ── */
.section{padding:110px 48px}
.section-alt{background:var(--bg2)}

.kicker{
  display:block;
  font-family:var(--mono);font-size:11px;font-weight:600;
  letter-spacing:2.5px;text-transform:uppercase;
  color:var(--accent);margin-bottom:14px;
}

.section-h{
  font-size:clamp(30px,5vw,52px);font-weight:900;
  letter-spacing:-2px;line-height:1.06;margin-bottom:14px;
}

.section-sub{
  font-size:17px;color:var(--muted);line-height:1.68;
  max-width:560px;margin-bottom:56px;
}

/* ── ABOUT ── */
.about-grid{
  display:grid;grid-template-columns:340px 1fr;
  gap:72px;align-items:start;
}

.about-photo-col{}

.about-photo{
  width:100%;border-radius:20px;
  box-shadow:0 20px 60px rgba(0,0,0,.32);
  border:1px solid var(--border);
  aspect-ratio:3/4;object-fit:cover;object-position:top center;
}

.about-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

.badge{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--faint);border:1px solid var(--border);
  border-radius:10px;padding:7px 13px;
  font-size:12px;font-weight:600;color:var(--muted);
}
.badge.red{
  background:var(--accent-dim);
  border-color:rgba(255,59,59,.22);
  color:var(--accent);
}
[data-theme="light"] .badge.red{border-color:rgba(212,43,43,.2)}

.about-text h2{
  font-size:clamp(26px,3.5vw,38px);font-weight:900;
  letter-spacing:-1.5px;margin-bottom:20px;line-height:1.1;
}
.about-text p{
  font-size:16px;color:var(--muted);line-height:1.78;margin-bottom:16px;
}
.about-text p strong{color:var(--fg)}

/* ── EXPERTISE ── */
.expertise-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:18px;margin-bottom:48px;
}

.exp-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:20px;padding:28px 24px;
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s;
}
.exp-card:hover{
  transform:translateY(-6px);
  border-color:rgba(255,59,59,.3);
  box-shadow:0 16px 48px var(--accent-dim);
}

.exp-icon{
  width:46px;height:46px;border-radius:14px;
  background:var(--accent-dim);
  border:1px solid rgba(255,59,59,.2);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;color:var(--accent);
}
[data-theme="light"] .exp-icon{border-color:rgba(212,43,43,.2)}

.exp-card h3{font-size:16px;font-weight:800;letter-spacing:-.3px;margin-bottom:10px}
.exp-card p{font-size:14px;color:var(--muted);line-height:1.65}

.stack-wrap h3{
  font-size:12px;font-weight:700;letter-spacing:2px;
  text-transform:uppercase;color:var(--muted);margin-bottom:14px;
}
.tags{display:flex;flex-wrap:wrap;gap:8px}

.tag{
  display:inline-flex;align-items:center;
  background:var(--surface);border:1px solid var(--border);
  border-radius:9px;padding:6px 13px;
  font-size:13px;font-weight:600;
  font-family:var(--mono);color:var(--fg);
  transition:border-color .2s,background .2s;
}
.tag:hover{border-color:var(--accent);background:var(--accent-dim)}
.tag.cert{
  background:var(--accent-dim);
  border-color:rgba(255,59,59,.28);
  color:var(--accent);
}
[data-theme="light"] .tag.cert{border-color:rgba(212,43,43,.25)}

/* ── PROJECTS ── */
.proj-featured{
  background:var(--surface);border:1px solid var(--border);
  border-radius:24px;padding:40px;
  display:grid;grid-template-columns:1fr 300px;
  gap:48px;align-items:center;
  margin-bottom:20px;
  position:relative;overflow:hidden;
  transition:border-color .3s,box-shadow .3s;
}
.proj-featured::before{
  content:'';position:absolute;
  top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--teal),#6BBF8C);
}
.proj-featured:hover{
  border-color:rgba(27,127,107,.35);
  box-shadow:0 20px 60px rgba(27,127,107,.08);
}

.proj-label{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(27,127,107,.1);border:1px solid rgba(27,127,107,.22);
  color:var(--teal);border-radius:20px;
  padding:4px 12px;font-size:11px;font-weight:700;
  letter-spacing:1px;text-transform:uppercase;
  margin-bottom:16px;
}

.proj-featured h3{
  font-size:clamp(24px,3vw,34px);font-weight:900;
  letter-spacing:-1.5px;margin-bottom:14px;
}
.proj-featured p{font-size:15px;color:var(--muted);line-height:1.72;margin-bottom:22px}

.proj-stats{display:flex;gap:28px;margin-bottom:24px}
.ps-num{font-size:30px;font-weight:900;letter-spacing:-1.5px;color:var(--teal);line-height:1}
.ps-lbl{font-size:12px;color:var(--muted);margin-top:3px}

.proj-links{display:flex;gap:10px;flex-wrap:wrap}

.proj-link{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--faint);border:1px solid var(--border);
  border-radius:10px;padding:9px 16px;
  font-size:13px;font-weight:600;color:var(--fg);
  transition:background .2s,border-color .2s,transform .2s;
}
.proj-link:hover{background:var(--surface2);transform:translateY(-1px)}

.proj-link.teal{
  background:rgba(27,127,107,.1);
  border-color:rgba(27,127,107,.22);
  color:var(--teal);
}
.proj-link.teal:hover{background:rgba(27,127,107,.2);border-color:var(--teal)}

.proj-visual{
  border-radius:18px;overflow:hidden;
  border:1px solid var(--border);
  background:var(--surface2);
  aspect-ratio:1/1.1;
  display:flex;align-items:center;justify-content:center;
}
.proj-visual svg{opacity:.18}

.proj-mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}

.proj-mini{
  background:var(--surface);border:1px solid var(--border);
  border-radius:18px;padding:26px;
  transition:transform .3s var(--ease),border-color .2s;
}
.proj-mini:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.14)}
[data-theme="light"] .proj-mini:hover{border-color:rgba(0,0,0,.15)}

.proj-mini h3{font-size:16px;font-weight:800;letter-spacing:-.3px;margin-bottom:8px}
.proj-mini p{font-size:14px;color:var(--muted);line-height:1.65}

/* ── INTERESTS ── */
.interests-grid{
  display:grid;grid-template-columns:repeat(5,1fr);
  gap:14px;
}

.int-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:18px;padding:24px 18px;
  text-align:center;
  transition:transform .3s var(--ease),border-color .2s,box-shadow .3s;
}
.int-card:hover{
  transform:translateY(-6px);
  border-color:rgba(255,59,59,.28);
  box-shadow:0 12px 40px var(--accent-dim);
}
.int-card.main{
  border-color:rgba(255,59,59,.28);
  background:var(--accent-dim);
}

.int-icon{font-size:30px;margin-bottom:11px}
.int-card h3{font-size:13px;font-weight:800;letter-spacing:-.2px;margin-bottom:5px}
.int-card p{font-size:12px;color:var(--muted);line-height:1.5}

/* ── CONTACT ── */
.contact-inner{
  text-align:center;max-width:580px;margin:0 auto;
}
.contact-inner h2{
  font-size:clamp(32px,5.5vw,58px);font-weight:900;
  letter-spacing:-2.5px;line-height:1.05;margin-bottom:18px;
}
.contact-inner p{font-size:17px;color:var(--muted);margin-bottom:36px}

.contact-btns{
  display:flex;align-items:center;justify-content:center;
  gap:12px;flex-wrap:wrap;
}

/* ── FOOTER ── */
.footer{
  background:var(--bg2);border-top:1px solid var(--border);
  padding:40px 48px;
}
.footer-inner{
  max-width:1100px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:16px;
}
.footer-brand{font-family:var(--mono);font-size:14px;font-weight:600}
.footer-brand em{color:var(--accent);font-style:normal}
.footer-links{display:flex;gap:20px;font-size:13px;color:var(--muted)}
.footer-links a:hover{color:var(--fg)}
.footer-copy{font-size:12px;color:var(--muted);opacity:.5}

/* ── SCROLL REVEAL ── */
.rev{opacity:0;transform:translateY(30px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rev.in{opacity:1;transform:translateY(0)}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.26s}
.d4{transition-delay:.36s}.d5{transition-delay:.46s}

/* ── RESPONSIVE ── */
@media(max-width:960px){
  .nav-links{display:none}
  .hero-inner{grid-template-columns:1fr}
  .hero-right{display:none}
  .about-grid{grid-template-columns:1fr}
  .about-photo{max-width:280px}
  .expertise-grid{grid-template-columns:1fr}
  .proj-featured{grid-template-columns:1fr}
  .proj-visual{display:none}
  .interests-grid{grid-template-columns:repeat(2,1fr)}
  .proj-mini-grid{grid-template-columns:1fr}
}
@media(max-width:600px){
  .section,.hero{padding:80px 22px}
  .hero{padding:100px 22px 60px}
  .nav{padding:0 22px}
  .footer{padding:32px 22px}
  .wrap{padding:0 22px}
  .hero-name{letter-spacing:-2.5px}
  .section-h{letter-spacing:-1px}
  .interests-grid{grid-template-columns:repeat(2,1fr)}
  .proj-stats{gap:18px}
  .footer-inner{flex-direction:column;text-align:center}
}