/* ============================================================
   zmagazynem.pl — landing styles
   ============================================================ */

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

:root{
  --bg:#0e1116;
  --surface:#161a22;
  --surface-2:#1d222c;
  --border:#252b36;
  --text:#e8ecf2;
  --text-muted:#9aa3b2;
  --accent:#facc15;
  --accent-strong:#fde047;
  --accent-dim:#ca9d10;
  --shadow-accent:0 0 40px rgba(250,204,21,.25);
  --radius:14px;
  --container:1200px;
}

img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{font-family:'Space Grotesk',sans-serif;font-weight:600;letter-spacing:-.02em;line-height:1.15;margin:0 0 .5em}
h1{font-size:clamp(2.2rem,5vw,3.6rem)}
h2{font-size:clamp(1.8rem,3.5vw,2.6rem)}
h3{font-size:1.25rem}
p{margin:0 0 1em;color:var(--text-muted)}

.container{max-width:var(--container);margin:0 auto;padding:0 1.5rem}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--accent);padding:.4rem .75rem;border:1px solid rgba(250,204,21,.3);border-radius:99px;background:rgba(250,204,21,.06);margin-bottom:1.25rem}
.eyebrow svg{width:14px;height:14px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.85rem 1.4rem;border-radius:10px;font-weight:600;font-size:.95rem;transition:transform .15s,box-shadow .2s,background .2s;white-space:nowrap}
.btn-primary{background:var(--accent);color:#1a1300;box-shadow:var(--shadow-accent)}
.btn-primary:hover{background:var(--accent-strong);transform:translateY(-1px)}
.btn-ghost{border:1px solid var(--border);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}

/* ===== Nav ===== */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);background:rgba(14,17,22,.78);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:1rem 0;gap:1rem}
.logo{display:flex;align-items:center;gap:.55rem;font-family:'Space Grotesk';font-weight:700;font-size:1.15rem;color:var(--text)}
.logo-bolt{width:28px;height:28px;display:grid;place-items:center;background:var(--accent);border-radius:7px;color:#1a1300;box-shadow:var(--shadow-accent)}
.logo-bolt svg{width:16px;height:16px}
.nav-links{display:flex;align-items:center;gap:1.75rem}
.nav-links a{font-size:.92rem;color:var(--text-muted);transition:color .15s}
.nav-links a:hover{color:var(--accent)}
.nav-cta{display:flex;gap:.6rem;align-items:center}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--border);border-radius:8px;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:'';position:absolute;left:0;width:18px;height:2px;background:var(--text)}
.nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}

/* ===== Hero ===== */
.hero{position:relative;padding:5rem 0 6rem;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:url('/hero-bg.jpg') center/cover;opacity:.35;z-index:0}
.hero::after{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 70% 30%,rgba(250,204,21,.18),transparent 55%),linear-gradient(180deg,transparent 0%,var(--bg) 95%);z-index:1}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:3rem;align-items:center}
.hero h1 span{color:var(--accent)}
.hero p.lead{font-size:1.15rem;color:var(--text);opacity:.85;max-width:46ch;margin-bottom:1.75rem}
.hero-ctas{display:flex;flex-wrap:wrap;gap:.75rem;margin-bottom:2.5rem}
.hero-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;border-top:1px solid var(--border);padding-top:1.5rem;max-width:520px}
.fact strong{display:block;font-family:'Space Grotesk';font-size:1.4rem;color:var(--accent)}
.fact span{font-size:.85rem;color:var(--text-muted)}
.hero-visual{position:relative;aspect-ratio:1/1;border-radius:var(--radius);background:linear-gradient(145deg,var(--surface-2),var(--surface));border:1px solid var(--border);overflow:hidden;display:grid;place-items:center;padding:2rem}
.hero-visual::before{content:'';position:absolute;inset:-20%;background:radial-gradient(circle at 50% 50%,rgba(250,204,21,.18),transparent 50%);animation:pulse 5s ease-in-out infinite}
.hero-visual img{position:relative;max-height:100%;object-fit:contain;filter:drop-shadow(0 20px 40px rgba(0,0,0,.5))}
@keyframes pulse{0%,100%{transform:scale(1);opacity:.6}50%{transform:scale(1.1);opacity:1}}

/* ===== Sections ===== */
section{padding:5rem 0;position:relative}
.section-head{text-align:center;max-width:680px;margin:0 auto 3rem}
.section-head p{font-size:1.05rem}

/* ===== Products grid ===== */
.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.product-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.75rem;display:flex;flex-direction:column;transition:transform .2s,border-color .2s,box-shadow .2s;position:relative;overflow:hidden}
.product-card:hover{transform:translateY(-4px);border-color:rgba(250,204,21,.5);box-shadow:0 10px 40px -10px rgba(250,204,21,.2)}
.product-card .badge{position:absolute;top:1rem;right:1rem;z-index:2;background:var(--accent);color:#1a1300;font-size:.7rem;font-weight:700;padding:.25rem .55rem;border-radius:99px;letter-spacing:.05em;text-transform:uppercase}
.product-img{aspect-ratio:4/3;background:var(--surface-2);border-radius:10px;margin-bottom:1.25rem;display:grid;place-items:center;padding:1rem;overflow:hidden}
.product-img img{max-height:100%;object-fit:contain}
.product-card h3{margin-bottom:.3rem}
.product-card .sub{color:var(--text-muted);font-size:.88rem;margin-bottom:1rem}
.specs{list-style:none;padding:0;margin:0 0 1.5rem;display:grid;gap:.5rem}
.specs li{display:flex;justify-content:space-between;padding:.55rem 0;border-bottom:1px dashed var(--border);font-size:.88rem}
.specs li:last-child{border-bottom:0}
.specs li span:first-child{color:var(--text-muted)}
.specs li span:last-child{color:var(--text);font-weight:600}
.product-card .btn{margin-top:auto}

/* ===== EcoBSS advantages ===== */
.advantages{background:linear-gradient(180deg,var(--bg) 0%,var(--surface) 50%,var(--bg) 100%);position:relative}
.advantages::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% 0%,rgba(250,204,21,.08),transparent 60%);pointer-events:none}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}
.adv-card{background:rgba(22,26,34,.7);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem}
.adv-icon{width:42px;height:42px;border-radius:10px;background:rgba(250,204,21,.12);color:var(--accent);display:grid;place-items:center;margin-bottom:1rem}
.adv-icon svg{width:22px;height:22px}
.adv-card h3{font-size:1.05rem;margin-bottom:.4rem}
.adv-card p{font-size:.9rem;margin:0}

/* ===== Steps ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem;counter-reset:step}
.step{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2rem 1.5rem 1.5rem;counter-increment:step}
.step::before{content:counter(step,decimal-leading-zero);position:absolute;top:-14px;left:1.5rem;background:var(--accent);color:#1a1300;font-family:'Space Grotesk';font-weight:700;font-size:.85rem;padding:.25rem .65rem;border-radius:6px;letter-spacing:.05em}
.step h3{font-size:1.05rem}
.step p{font-size:.9rem;margin:0}

/* ===== Benefits ===== */
.benefits-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}
.benefit{padding:1.5rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);display:flex;gap:1rem;align-items:flex-start}
.benefit-icon{flex-shrink:0;width:38px;height:38px;border-radius:8px;background:rgba(250,204,21,.12);color:var(--accent);display:grid;place-items:center}
.benefit-icon svg{width:20px;height:20px}
.benefit h3{font-size:1rem;margin-bottom:.25rem}
.benefit p{font-size:.88rem;margin:0}

/* ===== Cross-sell ===== */
.cross{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.cross-card{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--surface);border:1px solid var(--border);aspect-ratio:4/5;display:flex;flex-direction:column;justify-content:flex-end;padding:1.75rem;color:#fff;transition:transform .2s,border-color .2s}
.cross-card::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(14,17,22,.92) 100%);z-index:1}
.cross-card .cross-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.85;transition:transform .4s}
.cross-card:hover{border-color:rgba(250,204,21,.5);transform:translateY(-4px)}
.cross-card:hover .cross-bg{transform:scale(1.05)}
.cross-card .cross-content{position:relative;z-index:2}
.cross-card h3{margin-bottom:.3rem}
.cross-card p{font-size:.9rem;color:rgba(255,255,255,.75);margin-bottom:1rem}
.cross-card .arrow{display:inline-flex;align-items:center;gap:.4rem;color:var(--accent);font-weight:600;font-size:.92rem}

/* ===== FAQ ===== */
.faq{max-width:780px;margin:0 auto}
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:0;margin-bottom:.75rem;overflow:hidden;transition:border-color .2s}
.faq details[open]{border-color:rgba(250,204,21,.4)}
.faq summary{list-style:none;cursor:pointer;padding:1.1rem 1.25rem;font-weight:600;display:flex;justify-content:space-between;align-items:center;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';font-size:1.4rem;color:var(--accent);transition:transform .2s;flex-shrink:0;line-height:1}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .answer{padding:0 1.25rem 1.25rem;color:var(--text-muted);font-size:.95rem}

/* ===== Contact form ===== */
.contact{background:linear-gradient(180deg,var(--bg),var(--surface))}
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:3rem;align-items:start}
.contact-info h2{margin-bottom:1rem}
.contact-info ul{list-style:none;padding:0;margin:1.5rem 0 0}
.contact-info ul li{display:flex;align-items:center;gap:.75rem;padding:.6rem 0;color:var(--text);font-size:.95rem}
.contact-info ul svg{width:18px;height:18px;color:var(--accent)}
form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;display:grid;gap:1rem}
.field{display:grid;gap:.4rem}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
label{font-size:.85rem;font-weight:500;color:var(--text)}
input,select,textarea{font:inherit;background:var(--surface-2);border:1px solid var(--border);color:var(--text);padding:.75rem .9rem;border-radius:8px;width:100%;transition:border-color .15s,box-shadow .15s}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px rgba(250,204,21,.15)}
textarea{resize:vertical;min-height:90px}
.checkbox{display:flex;gap:.6rem;align-items:flex-start;font-size:.82rem;color:var(--text-muted);line-height:1.5;cursor:pointer}
.checkbox input{width:auto;margin-top:.2rem;accent-color:var(--accent)}
.fieldset{border:1px solid var(--border);border-radius:14px;padding:1rem 1.1rem 1.1rem;margin:0;display:grid;gap:.75rem;background:rgba(255,255,255,.015)}
.fieldset legend{padding:0 .4rem;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);font-weight:600}
.pv-details{display:grid;gap:.75rem;padding-top:.25rem;border-top:1px dashed var(--border);margin-top:.25rem}
.radio-group{display:flex;flex-wrap:wrap;gap:.5rem .9rem;align-items:center}
.radio-label{flex-basis:100%;font-size:.82rem;color:var(--text-muted)}
.radio{display:inline-flex;gap:.4rem;align-items:center;font-size:.85rem;cursor:pointer;padding:.35rem .7rem;border:1px solid var(--border);border-radius:999px;background:rgba(255,255,255,.02)}
.radio input{accent-color:var(--accent)}
.radio:has(input:checked){border-color:var(--accent);background:rgba(250,204,21,.08);color:var(--text)}
.form-msg{padding:.75rem 1rem;border-radius:8px;font-size:.9rem;display:none}
.form-msg.ok{display:block;background:rgba(34,197,94,.1);border:1px solid rgba(34,197,94,.3);color:#86efac}
.form-msg.err{display:block;background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.3);color:#fca5a5}

/* ===== Footer ===== */
footer{padding:3rem 0 2rem;border-top:1px solid var(--border);background:var(--bg)}
.foot{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:2rem;margin-bottom:2rem}
.foot p{font-size:.88rem;max-width:36ch}
.foot h4{font-family:'Space Grotesk';font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--text);margin-bottom:1rem}
.foot ul{list-style:none;padding:0;margin:0;display:grid;gap:.5rem}
.foot a{color:var(--text-muted);font-size:.9rem}
.foot a:hover{color:var(--accent)}
.copyright{padding-top:1.5rem;border-top:1px solid var(--border);text-align:center;font-size:.82rem;color:var(--text-muted)}

/* ===== Reveal animation ===== */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:translateY(0)}

/* ===== Responsive ===== */
@media (max-width:960px){
  .nav-links,.nav-cta .btn-ghost{display:none}
  .nav-toggle{display:flex}
  .nav.open .nav-links{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:var(--bg);border-bottom:1px solid var(--border);padding:1rem 1.5rem;gap:1rem}
  .hero .container{grid-template-columns:1fr;gap:2rem}
  .hero-visual{max-width:420px;margin:0 auto}
  .products-grid,.adv-grid,.steps,.benefits-grid,.cross{grid-template-columns:1fr 1fr}
  .contact-grid,.foot{grid-template-columns:1fr;gap:2rem}
}
@media (max-width:600px){
  section{padding:3.5rem 0}
  .hero{padding:3rem 0 4rem}
  .products-grid,.adv-grid,.steps,.benefits-grid,.cross{grid-template-columns:1fr}
  .hero-facts{grid-template-columns:1fr;gap:.75rem}
  .row2{grid-template-columns:1fr}
}

/* ===== Carousel (product image) ===== */
.carousel{position:relative;overflow:hidden}
.carousel-track{position:relative;width:100%;height:100%;display:grid;place-items:center}
.carousel-track img{grid-area:1/1;max-height:100%;object-fit:contain;opacity:0;transition:opacity .35s ease;pointer-events:none}
.carousel-track img.is-active{opacity:1;pointer-events:auto}
.carousel-btn{position:absolute;top:50%;transform:translateY(-50%);width:34px;height:34px;border-radius:50%;background:rgba(14,17,22,.7);color:var(--accent);font-size:1.4rem;line-height:1;display:grid;place-items:center;border:1px solid var(--border);backdrop-filter:blur(6px);transition:background .15s,border-color .15s}
.carousel-btn:hover{background:rgba(250,204,21,.18);border-color:var(--accent)}
.carousel-btn.prev{left:.5rem}
.carousel-btn.next{right:.5rem}
.carousel-dots{position:absolute;left:0;right:0;bottom:.5rem;display:flex;gap:.35rem;justify-content:center}
.carousel-dots button{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.25);border:0;padding:0;transition:background .15s,transform .15s}
.carousel-dots button[aria-selected="true"]{background:var(--accent);transform:scale(1.3)}