:root{
  --bg:#0b0c10;
  --bg-soft:#111319;
  --surface:#15171f;
  --border:#23262f;
  --text:#f4f5f7;
  --muted:#9aa0ac;
  --accent:#c9a24a;
  --accent-soft:rgba(201,162,74,.12);
  --radius:14px;
  --maxw:1140px;
  --ff:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--ff);
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* language toggle */
[data-lang-en]{display:none}
body.lang-en [data-lang-en]{display:revert}
body.lang-en [data-lang-pl]{display:none}
body.lang-pl [data-lang-pl]{display:revert}
body.lang-pl [data-lang-en]{display:none}
/* default fallback for inline elements */
body.lang-en span[data-lang-en],
body.lang-pl span[data-lang-pl]{display:inline}

/* header */
header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(11,12,16,.72);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:12px;font-weight:600;letter-spacing:.02em;font-size:1.15rem}
.brand-mark{
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--accent),#e7c97a);
  display:flex;align-items:center;justify-content:center;
  color:#0b0c10;font-weight:800;font-size:1rem;
}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{color:var(--muted);font-size:.93rem;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.lang-switch{display:flex;border:1px solid var(--border);border-radius:999px;overflow:hidden}
.lang-switch button{
  background:transparent;border:none;color:var(--muted);
  padding:7px 14px;font-size:.8rem;font-weight:600;cursor:pointer;
  font-family:var(--ff);letter-spacing:.04em;transition:all .2s;
}
.lang-switch button.active{background:var(--accent);color:#0b0c10}
.menu-toggle{display:none;background:none;border:none;color:var(--text);cursor:pointer}

/* hero */
.hero{
  padding:190px 0 120px;
  position:relative;
  background:
    radial-gradient(900px 500px at 75% -10%,var(--accent-soft),transparent 60%),
    radial-gradient(700px 400px at 10% 30%,rgba(255,255,255,.03),transparent 55%);
}
.eyebrow{
  display:inline-block;font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--accent);margin-bottom:22px;font-weight:600;
}
.hero h1{
  font-size:clamp(2.4rem,5.4vw,4.1rem);
  line-height:1.08;font-weight:700;letter-spacing:-.02em;max-width:14ch;
}
.hero p{
  color:var(--muted);font-size:clamp(1.05rem,1.6vw,1.25rem);
  max-width:54ch;margin:26px 0 38px;
}
.cta-row{display:flex;gap:16px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 30px;border-radius:999px;font-weight:600;font-size:.95rem;
  cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s;border:none;font-family:var(--ff);
}
.btn-primary{background:var(--accent);color:#0b0c10}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px -10px var(--accent)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}

/* section base */
section{padding:96px 0}
.section-head{max-width:640px;margin-bottom:56px}
.section-head .eyebrow{margin-bottom:14px}
.section-head h2{font-size:clamp(1.8rem,3.4vw,2.6rem);font-weight:700;letter-spacing:-.01em;line-height:1.15}
.section-head p{color:var(--muted);margin-top:16px;font-size:1.05rem}

/* services grid */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:32px 28px;transition:border-color .25s,transform .25s;
}
.card:hover{border-color:var(--accent);transform:translateY(-4px)}
.card-icon{
  width:46px;height:46px;border-radius:11px;background:var(--accent-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:var(--accent);
}
.card h3{font-size:1.2rem;font-weight:650;margin-bottom:10px}
.card p{color:var(--muted);font-size:.96rem}

/* stats */
.stats{background:var(--bg-soft);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat-num{font-size:clamp(2.2rem,4vw,3rem);font-weight:700;color:var(--accent);letter-spacing:-.02em}
.stat-label{color:var(--muted);font-size:.92rem;margin-top:6px}

/* about / approach */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.steps{list-style:none;display:flex;flex-direction:column;gap:24px}
.steps li{display:flex;gap:18px;align-items:flex-start}
.step-num{
  flex:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;color:var(--accent);font-weight:700;font-size:.95rem;
}
.steps h4{font-size:1.08rem;font-weight:600;margin-bottom:4px}
.steps p{color:var(--muted);font-size:.95rem}

/* contact form */
.contact{background:var(--bg-soft);border-top:1px solid var(--border)}
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:60px}
.contact-info h2{font-size:clamp(1.8rem,3vw,2.4rem);font-weight:700;margin-bottom:16px}
.contact-info p{color:var(--muted);margin-bottom:28px}
.contact-detail{display:flex;align-items:center;gap:14px;margin-bottom:16px;color:var(--muted)}
.contact-detail a:hover{color:var(--accent)}
.contact-detail .ci{width:38px;height:38px;border-radius:10px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;color:var(--accent);flex:none}
form{display:flex;flex-direction:column;gap:18px}
.field label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:8px}
.field input,.field textarea{
  width:100%;background:var(--surface);border:1px solid var(--border);
  border-radius:10px;padding:14px 16px;color:var(--text);font-family:var(--ff);font-size:.95rem;transition:border-color .2s;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent)}
.field textarea{resize:vertical;min-height:120px}
.form-note{font-size:.82rem;color:var(--muted)}

/* footer */
footer{background:var(--bg);border-top:1px solid var(--border);padding:56px 0 32px}
.footer-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:32px;margin-bottom:40px}
.footer-brand{max-width:320px}
.footer-brand p{color:var(--muted);font-size:.92rem;margin-top:14px}
.footer-col h5{font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:16px}
.footer-col a{display:block;color:var(--text);font-size:.92rem;margin-bottom:10px;opacity:.85;transition:opacity .2s,color .2s}
.footer-col a:hover{opacity:1;color:var(--accent)}
.footer-bottom{border-top:1px solid var(--border);padding-top:26px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--muted);font-size:.85rem}

/* legal pages */
.legal{padding:150px 0 96px;max-width:820px}
.legal h1{font-size:clamp(2rem,4vw,2.8rem);font-weight:700;margin-bottom:10px;letter-spacing:-.01em}
.legal .updated{color:var(--muted);font-size:.9rem;margin-bottom:40px}
.legal h2{font-size:1.35rem;font-weight:650;margin:38px 0 12px}
.legal p{color:var(--muted);margin-bottom:14px}
.legal ul{color:var(--muted);margin:0 0 14px 22px}
.legal li{margin-bottom:8px}
.legal a{color:var(--accent)}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--muted);margin-bottom:30px;font-size:.92rem}
.back-link:hover{color:var(--accent)}

/* responsive */
@media(max-width:860px){
  .nav-links{
    position:fixed;top:74px;left:0;right:0;background:var(--bg-soft);
    flex-direction:column;gap:0;padding:0;border-bottom:1px solid var(--border);
    max-height:0;overflow:hidden;transition:max-height .3s;align-items:stretch;
  }
  .nav-links.open{max-height:400px}
  .nav-links a{padding:16px 24px;border-top:1px solid var(--border)}
  .nav-links .lang-switch{margin:16px 24px}
  .menu-toggle{display:block}
  .grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:36px 20px}
  .split{grid-template-columns:1fr;gap:40px}
  .contact-wrap{grid-template-columns:1fr;gap:40px}
}