:root{
    --blue-bg: #071a2e;
    --blue-bg-2: #0a2238;
    --blue-bg-3: #051222;
    --blue-accent: #5bb3ff;
    --blue-accent-dim: rgba(91,179,255,0.35);
    --text: #eaf2fb;
    --text-dim: rgba(234,242,251,0.68);
    --brass: #c9a961;
    --card-bg: rgba(255,255,255,0.035);
    --card-border: rgba(255,255,255,0.08);
  }
  *{ box-sizing: border-box; }
  html{ scroll-behavior: smooth; }
  body{
    margin:0; background: var(--blue-bg); color: var(--text);
    font-family:'Inter',sans-serif; line-height:1.6;
  }
  a{ color: inherit; }
  img{ max-width:100%; display:block; }
  .wrap{ max-width: 1180px; margin: 0 auto; padding: 0 24px; }

  /* Header */
  header{
    position: sticky; top:0; z-index:50;
    background: rgba(7,26,46,0.85); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--card-border);
  }
  .nav{ display:flex; align-items:center; justify-content:space-between; padding:16px 0; }
  .logo{ display:flex; align-items:center; gap:10px; text-decoration:none; }
  .logo img{ height:34px; width:auto; }
  .logo span{ font-family:'JetBrains Mono',monospace; font-size:13px; letter-spacing:.14em; color:var(--text-dim); }
  nav ul{ list-style:none; display:flex; gap:28px; margin:0; padding:0; font-family:'JetBrains Mono',monospace; font-size:12.5px; letter-spacing:.06em; text-transform:uppercase; }
  nav ul a{ text-decoration:none; color:var(--text-dim); transition:color .2s; }
  nav ul a:hover{ color:var(--blue-accent); }
  .nav-cta{ color:var(--blue-accent) !important; border:1px solid var(--blue-accent-dim); padding:8px 16px; border-radius:3px; }
  .switch-link{ font-family:'JetBrains Mono',monospace; font-size:11.5px; color: #6fe3a4; text-decoration:none; border:1px solid rgba(111,227,164,0.35); padding:7px 13px; border-radius:3px; }
  .phone-link{ font-family:'JetBrains Mono',monospace; font-size:12.5px; letter-spacing:.04em; color:var(--blue-accent); text-decoration:none; }
  .phone-link:hover{ text-decoration:underline; }
  .menu-toggle{ display:none; background:none; border:none; color:var(--text); font-size:24px; cursor:pointer; }
  .nav-right{ display:flex; align-items:center; gap:20px; }

  /* Hero */
  .hero{
    position:relative; padding: 96px 0 90px; overflow:hidden;
    background:
      linear-gradient(180deg, rgba(7,26,46,0.55) 0%, rgba(7,26,46,0.92) 75%, var(--blue-bg) 100%),
      url('img/group-young-business-people-working-office.webp') center/cover;
  }
  .hero-inner{ position:relative; z-index:2; max-width:640px; }
  .eyebrow{ font-family:'JetBrains Mono',monospace; font-size:11.5px; letter-spacing:.3em; text-transform:uppercase; color:var(--blue-accent); display:block; margin-bottom:20px; }
  .hero h1{ font-family:'JetBrains Mono',monospace; font-weight:700; text-transform:uppercase; font-size:clamp(2rem,5vw,3.2rem); line-height:1.08; margin:0 0 22px; }
  .hero p{ color:var(--text-dim); font-size:16.5px; max-width:520px; margin:0 0 34px; }
  .btn{ display:inline-flex; align-items:center; gap:10px; font-family:'JetBrains Mono',monospace; font-size:12.5px; letter-spacing:.12em; text-transform:uppercase; padding:15px 26px; border-radius:3px; text-decoration:none; transition:all .25s; }
  .btn-primary{ background:var(--blue-accent); color:#051222; }
  .btn-primary:hover{ background:#7ec4ff; }
  .btn-ghost{ border:1px solid var(--blue-accent-dim); color:var(--blue-accent); margin-left:14px; }
  .btn-ghost:hover{ background:rgba(91,179,255,0.1); }

  /* Sections generic */
  section{ padding: 80px 0; }
  .section-head{ max-width:620px; margin-bottom:48px; }
  .section-head .eyebrow{ margin-bottom:14px; }
  .section-head h2{ font-family:'JetBrains Mono',monospace; font-size:clamp(1.5rem,3.4vw,2.2rem); margin:0 0 14px; text-transform:uppercase; letter-spacing:.01em; }
  .section-head p{ color:var(--text-dim); margin:0; font-size:15.5px; }

  /* Usługi */
  .services-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
  .service-card{ background:var(--card-bg); border:1px solid var(--card-border); border-radius:6px; padding:30px 26px; transition:border-color .25s, transform .25s; }
  .service-card:hover{ border-color:var(--blue-accent-dim); transform:translateY(-3px); }
  .service-card .num{ font-family:'JetBrains Mono',monospace; font-size:12px; color:var(--brass); letter-spacing:.1em; }
  .service-card h3{ font-family:'JetBrains Mono',monospace; font-size:17px; margin:16px 0 12px; text-transform:uppercase; letter-spacing:.02em; }
  .service-card p{ color:var(--text-dim); font-size:14.5px; margin:0; }

  /* Tech strip */
  .tech-strip{ padding:50px 0; border-top:1px solid var(--card-border); border-bottom:1px solid var(--card-border); }
  .tech-strip .wrap{ display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:34px; }
  .tech-strip img{ height:30px; width:auto; opacity:.75; filter:grayscale(1) brightness(1.6); transition:opacity .25s, filter .25s; }
  .tech-strip img:hover{ opacity:1; filter:none; }
  .tech-strip .label{ font-family:'JetBrains Mono',monospace; font-size:11px; letter-spacing:.2em; text-transform:uppercase; color:var(--text-dim); white-space:nowrap; }

  /* Realizacje */
  .portfolio-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
  .portfolio-item{ position:relative; border-radius:6px; overflow:hidden; border:1px solid var(--card-border); aspect-ratio:4/3; }
  .portfolio-item img{ width:100%; height:100%; object-fit:cover; transition:transform .5s ease; }
  .portfolio-item:hover img{ transform:scale(1.06); }
  .portfolio-caption{ position:absolute; left:0; right:0; bottom:0; padding:16px 18px; background:linear-gradient(0deg, rgba(5,18,34,0.92), transparent); font-family:'JetBrains Mono',monospace; font-size:12.5px; letter-spacing:.04em; }
  .portfolio-caption span{ display:block; color:var(--text-dim); font-size:10.5px; margin-top:3px; letter-spacing:.1em; text-transform:uppercase; }

  /* Proces */
  .process{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
  .process-step .num{ font-family:'JetBrains Mono',monospace; font-size:34px; color:var(--blue-accent-dim); font-weight:700; }
  .process-step h4{ font-family:'JetBrains Mono',monospace; font-size:15px; text-transform:uppercase; margin:10px 0 8px; }
  .process-step p{ color:var(--text-dim); font-size:14px; margin:0; }

  /* O nas */
  .about{ display:grid; grid-template-columns:1fr 1fr; gap:50px; align-items:center; }
  .about-media{ position:relative; border-radius:6px; overflow:hidden; border:1px solid var(--card-border); }
  .about-media img{ width:100%; height:100%; object-fit:cover; }
  .about-text h2{ font-family:'JetBrains Mono',monospace; text-transform:uppercase; font-size:clamp(1.4rem,3vw,2rem); margin:0 0 18px; }
  .about-text p{ color:var(--text-dim); font-size:15.5px; margin:0 0 16px; }
  .about-stats{ display:flex; gap:36px; margin-top:26px; }
  .about-stats div strong{ display:block; font-family:'JetBrains Mono',monospace; font-size:26px; color:var(--blue-accent); }
  .about-stats div span{ font-size:12px; color:var(--text-dim); text-transform:uppercase; letter-spacing:.06em; }

  /* Kontakt */
  .contact{ background:var(--blue-bg-2); border-top:1px solid var(--card-border); border-bottom:1px solid var(--card-border); }
  .contact-grid{ display:grid; grid-template-columns:0.9fr 1.1fr; gap:56px; }
  .contact-info h2{ font-family:'JetBrains Mono',monospace; text-transform:uppercase; font-size:clamp(1.4rem,3vw,2rem); margin:0 0 18px; }
  .contact-info p{ color:var(--text-dim); margin:0 0 26px; }
  .contact-detail{ font-family:'JetBrains Mono',monospace; font-size:13.5px; margin-bottom:12px; display:flex; gap:10px; }
  .contact-detail span{ color:var(--brass); }
  .contact-detail a{ color:var(--text); text-decoration:none; }
  .contact-detail a:hover{ color:var(--blue-accent); }

  form{ display:grid; gap:16px; }
  .form-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
  label{ font-family:'JetBrains Mono',monospace; font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--text-dim); display:block; margin-bottom:7px; }
  input, select, textarea{
    width:100%; background:rgba(255,255,255,0.04); border:1px solid var(--card-border); color:var(--text);
    padding:13px 14px; border-radius:4px; font-family:'Inter',sans-serif; font-size:14.5px;
  }
  input:focus, select:focus, textarea:focus{ outline:2px solid var(--blue-accent); border-color:transparent; }
  select{ cursor:pointer; }
  select option{
    background-color: #0a2238;
    color: #eaf2fb;
    padding: 10px;
  }
  textarea{ resize:vertical; min-height:120px; }
  .submit-btn{ justify-self:start; background:var(--blue-accent); color:#051222; border:none; font-family:'JetBrains Mono',monospace; font-size:12.5px; letter-spacing:.12em; text-transform:uppercase; padding:15px 30px; border-radius:3px; cursor:pointer; transition:background .25s; }
  .submit-btn:hover{ background:#7ec4ff; }
  .alert{ padding:14px 16px; border-radius:4px; font-size:13.5px; font-family:'JetBrains Mono',monospace; }
  .alert-ok{ background:rgba(111,227,164,0.1); border:1px solid rgba(111,227,164,0.4); color:#6fe3a4; }
  .alert-err{ background:rgba(255,107,107,0.1); border:1px solid rgba(255,107,107,0.4); color:#ff8a8a; }

  /* Footer */
  footer{
    position:relative; padding:60px 0 30px;
    background: linear-gradient(180deg, rgba(5,18,34,0.85), rgba(5,18,34,0.97)), url('img/footer-bg.webp') center/cover;
    border-top:1px solid var(--card-border);
  }
  .footer-top{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:30px; margin-bottom:40px; }
  .footer-brand{ display:flex; align-items:center; gap:10px; }
  .footer-brand img{ height:28px; }
  .footer-brand span{ font-family:'JetBrains Mono',monospace; font-size:12px; letter-spacing:.14em; color:var(--text-dim); }
  .footer-links{ display:flex; gap:40px; flex-wrap:wrap; }
  .footer-links div{ display:flex; flex-direction:column; gap:9px; }
  .footer-links a{ color:var(--text-dim); text-decoration:none; font-size:13.5px; }
  .footer-links a:hover{ color:var(--blue-accent); }
  .footer-links .heading{ font-family:'JetBrains Mono',monospace; font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--brass); margin-bottom:4px; }
  .footer-bottom{ border-top:1px solid var(--card-border); padding-top:22px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-size:12.5px; color:var(--text-dim); font-family:'JetBrains Mono',monospace; }

  @media (max-width:900px){
    .services-grid{ grid-template-columns:1fr 1fr; }
    .portfolio-grid{ grid-template-columns:1fr 1fr; }
    .process{ grid-template-columns:1fr 1fr; }
    .about{ grid-template-columns:1fr; }
    .contact-grid{ grid-template-columns:1fr; }
  }
  @media (max-width:680px){
    nav ul{ display:none; }
    .menu-toggle{ display:block; }
    .services-grid, .portfolio-grid, .process{ grid-template-columns:1fr; }
    .form-row{ grid-template-columns:1fr; }
    .switch-link{ display:none; }
    .nav-right{ gap:0; }
    .btn-ghost{ margin-left:0; margin-top:12px; }
  }
  :focus-visible{ outline:2px solid var(--brass); outline-offset:2px; }