/* ============================================================
   CoreInfra — wspólny system stylów (strona główna, usługi,
   systemy, blog). Jedno źródło prawdy dla nagłówka, stopki,
   nawigacji, przycisków, kolorów, typografii i sekcji.
   ============================================================ */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --navy:#0A1628;--navy2:#0f1e33;--blue:#1E56C8;--cyan:#06B6D4;
  --ink:#1e293b;--muted:#64748b;--line:#e6eaf0;--bg:#f8fafc;
}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{font-family:'DM Sans',system-ui,-apple-system,Segoe UI,sans-serif;color:var(--ink);line-height:1.7;font-size:1.02rem;background:#fff;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4,h5{font-family:'Syne',sans-serif;letter-spacing:-.025em;color:var(--navy);line-height:1.12}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
::selection{background:rgba(6,182,212,.25);color:var(--navy)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}

/* ── Nagłówek / nawigacja ─────────────────────────────────── */
header.site{background:rgba(10,22,40,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:#fff;position:sticky;top:0;z-index:70;border-bottom:1px solid rgba(255,255,255,.07)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{font-family:'Syne',sans-serif;font-weight:800;font-size:1.4rem;color:#fff}
.logo span{color:var(--cyan)}
nav.main{display:flex;align-items:center;gap:24px}
nav.main a{color:rgba(255,255,255,.82);font-size:.95rem;font-weight:500}
nav.main a:hover{color:#fff;text-decoration:none}
.nav-cta,.cta-shop{background:var(--cyan);color:var(--navy)!important;padding:9px 18px;border-radius:9px;font-weight:700}
.nav-cta:hover,.cta-shop:hover{background:#22d3ee;text-decoration:none}
.lang-switch{border:1px solid rgba(255,255,255,.28);padding:5px 11px;border-radius:8px;font-size:.82rem;font-weight:700;letter-spacing:.03em;color:rgba(255,255,255,.85)!important}
.lang-switch:hover{background:rgba(255,255,255,.12);color:#fff!important;text-decoration:none}
.burger{display:none;background:none;border:0;color:#fff;font-size:1.6rem;cursor:pointer}

/* Dropdown „Nasze systemy" */
.dropdown{position:relative;display:inline-block}
.dropdown .drop-toggle{color:rgba(255,255,255,.82)!important;font-size:.95rem;font-weight:500;cursor:pointer}
.dropdown .drop-menu{position:absolute;top:calc(100% + 10px);left:-10px;background:#0f1e33;border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:8px;min-width:210px;display:none;box-shadow:0 16px 40px rgba(0,0,0,.5);z-index:80}
.dropdown:hover .drop-menu,.dropdown:focus-within .drop-menu{display:block}
.dropdown .drop-menu a{display:block;padding:10px 12px;border-radius:8px;color:rgba(255,255,255,.85)!important;font-weight:600}
.dropdown .drop-menu a:hover{background:rgba(6,182,212,.15);color:#fff!important;text-decoration:none}

/* ── Przyciski ────────────────────────────────────────────── */
.btn{display:inline-block;padding:14px 30px;border-radius:12px;font-weight:700;font-size:1.02rem;cursor:pointer;border:0;transition:transform .15s,box-shadow .15s}
.btn-primary{background:var(--cyan);color:var(--navy);box-shadow:0 8px 24px rgba(6,182,212,.35)}
.btn-primary:hover{text-decoration:none;transform:translateY(-2px);box-shadow:0 12px 30px rgba(6,182,212,.45)}
.btn-ghost{background:rgba(255,255,255,.07);color:#fff;border:1px solid rgba(255,255,255,.2)}
.btn-ghost:hover{background:rgba(255,255,255,.14);text-decoration:none}
.btn-dark{background:var(--navy);color:#fff}
.btn-dark:hover{background:var(--blue);text-decoration:none}

/* ── Sekcje / typografia pomocnicza ───────────────────────── */
section{padding:96px 0}
.alt{background:var(--bg)}
.eyebrow{color:var(--cyan);font-weight:700;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:14px}
.sec-head{max-width:680px;margin-bottom:52px}
.sec-head h2{font-size:clamp(1.7rem,3.6vw,2.6rem);margin-bottom:14px}
.sec-head p{color:var(--muted);font-size:1.12rem;line-height:1.65}
@media(max-width:640px){section{padding:64px 0}}
.badge{display:inline-flex;align-items:center;gap:8px;background:rgba(6,182,212,.12);border:1px solid rgba(6,182,212,.32);color:#7dd3fc;padding:7px 16px;border-radius:999px;font-size:.82rem;font-weight:700;margin-bottom:22px}

/* ── Animacja pojawiania ──────────────────────────────────── */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ── Stopka ───────────────────────────────────────────────── */
footer.site{background:var(--navy);color:rgba(255,255,255,.66);padding:56px 0 26px}
footer.site .cols,footer.site .foot-cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:38px;margin-bottom:32px}
footer.site h5{font-family:'Syne',sans-serif;color:#fff;font-size:1rem;margin-bottom:13px}
footer.site a{color:rgba(255,255,255,.66);display:block;padding:4px 0}
footer.site a:hover{color:var(--cyan);text-decoration:none}
footer.site .foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:22px;font-size:.85rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ── Responsywność wspólna ────────────────────────────────── */
@media(max-width:900px){
  nav.main{position:fixed;inset:66px 0 auto 0;background:var(--navy);flex-direction:column;gap:0;padding:10px 22px 20px;display:none;border-bottom:1px solid rgba(255,255,255,.1)}
  nav.main.open{display:flex}
  nav.main a,nav.main .dropdown{padding:13px 0;width:100%;border-bottom:1px solid rgba(255,255,255,.06)}
  .dropdown .drop-menu{position:static;display:block;background:transparent;border:0;box-shadow:none;padding:6px 0 0 14px;min-width:0}
  .burger{display:block}
  footer.site .cols,footer.site .foot-cols{grid-template-columns:1fr;gap:22px}
}