/* ---------- Tokens ---------- */
  :root{
    --bg:        #fbfbfd;
    --bg-alt:    #f5f5f7;
    --bg-elev:   #ffffff;
    --ink:       #1d1d1f;
    --ink-2:     #424245;
    --ink-3:     #6e6e73;
    --rule:      #d2d2d7;
    --rule-soft: #e8e8ed;
    --accent:    #0a5cd6;
    --accent-ink:#073f93;

    --radius-sm: 10px;
    --radius:    18px;
    --radius-lg: 28px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,.04), 0 1px 1px rgba(0,0,0,.03);
    --shadow:    0 6px 24px -8px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.04);

    --ease:      cubic-bezier(.2,.7,.2,1);

    --max:       940px;
    --gutter:    clamp(20px, 4vw, 40px);
  }

  /* ---------- Reset / base ---------- */
  *,*::before,*::after{ box-sizing:border-box; }
  html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
  html,body{ margin:0; padding:0; }
  body{
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", system-ui, sans-serif;
    background: var(--bg);
    color: var(--ink);
    font-size: 17px;
    line-height: 1.5;
    letter-spacing: -0.011em;
    font-feature-settings: "ss01","cv11";
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
  img,svg{ display:block; max-width:100%; }
  a{ color:inherit; text-decoration:none; }
  button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
  ::selection{ background:var(--accent); color:#fff; }

  .wrap{
    width:100%;
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 var(--gutter);
  }

  /* ---------- Type scale ---------- */
  .eyebrow{
    font-size: 13px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-3);
    font-weight: 500;
  }
  .display{
    font-weight: 600;
    letter-spacing: -0.035em;
    line-height: 1.04;
    font-size: clamp(48px, 8vw, 104px);
    color: var(--ink);
  }
  .h1{
    font-weight: 600;
    letter-spacing: -0.028em;
    line-height: 1.08;
    font-size: clamp(36px, 5vw, 60px);
    margin: 0;
  }
  .h2{
    font-weight: 600;
    letter-spacing: -0.022em;
    line-height: 1.15;
    font-size: clamp(24px, 2.4vw, 30px);
    margin: 0;
  }
  .lede{
    font-size: clamp(18px, 1.6vw, 22px);
    line-height: 1.45;
    color: var(--ink-2);
    letter-spacing: -0.012em;
    max-width: 56ch;
  }
  .body{ color: var(--ink-2); }
  .small{ font-size: 14px; color: var(--ink-3); }
  .mono{ font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 12.5px; letter-spacing: 0; }

  /* ---------- Nav ---------- */
  .nav{
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(251,251,253,.72);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid transparent;
    transition: border-color .3s var(--ease), background .3s var(--ease);
  }
  .nav.is-scrolled{
    border-bottom-color: var(--rule-soft);
    background: rgba(251,251,253,.85);
  }
  .nav__inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height: 56px;
  }
  .brand{
    font-weight: 600;
    letter-spacing: -0.012em;
    font-size: 15px;
    display:inline-flex;
    align-items:center;
    gap: 10px;
  }
  .brand__dot{
    width:8px; height:8px; border-radius:50%;
    background: var(--ink);
    transform: translateY(.5px);
  }
  .nav__links{
    display:flex; gap: 28px; align-items:center;
  }
  .nav__links a{
    font-size: 13.5px;
    color: var(--ink-2);
    font-weight: 450;
    transition: color .2s var(--ease);
  }
  .nav__links a:hover{ color: var(--ink); }
  .nav__right{
    display:flex; align-items:center; gap: 16px;
  }
  .lang{
    display:inline-flex;
    border: 1px solid var(--rule);
    border-radius: 999px;
    padding: 3px;
    background: rgba(255,255,255,.6);
  }
  .lang button{
    font-size: 12px;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 999px;
    color: var(--ink-3);
    letter-spacing: .04em;
    transition: color .2s var(--ease), background .2s var(--ease);
  }
  .lang button.is-active{
    background: var(--ink);
    color: #fff;
  }
  @media (max-width: 720px){
    .nav__links{ display:none; }
  }

  /* ---------- Section ---------- */
  section{
    padding: clamp(80px, 11vw, 140px) 0;
    position: relative;
  }
  section + section{ border-top: 1px solid var(--rule-soft); }
  .section-head{
    display:flex;
    flex-direction:column;
    gap: 14px;
    margin-bottom: clamp(48px, 6vw, 80px);
    max-width: 760px;
  }

  /* ---------- HERO ---------- */
  .hero{ padding-top: clamp(60px, 9vw, 110px); padding-bottom: clamp(80px, 10vw, 130px); }
  .hero__eyebrow{ margin-bottom: 28px; }
  .hero__name{ margin: 0; }
  .hero__grid{
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    gap: clamp(32px, 4vw, 48px);
    align-items: end;
  }
  @media (min-width: 880px){
    .hero__grid{
      grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
      align-items: end;
      min-height: clamp(520px, 64vh, 720px);
    }
  }
  .hero__portrait{
    position: relative;
    margin: 0;
    align-self: end;
    justify-self: center;
    pointer-events: none;
    height: clamp(420px, 60vh, 640px);
    display: flex;
    align-items: flex-end;
    justify-content: center;
  }
  @media (min-width: 880px){
    .hero__portrait{ justify-self: end; height: clamp(520px, 72vh, 760px); }
  }
  .hero__portrait img{
    display: block;
    height: 100%;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    /* soft contact-shadow under the feet so the figure doesn't float */
    filter: drop-shadow(0 24px 22px rgba(29,29,31,.12));
  }
  /* Elliptical shadow on the ground */
  .hero__portrait::after{
    content: "";
    position: absolute;
    left: 50%;
    bottom: -8px;
    transform: translateX(-50%);
    width: 58%;
    height: 22px;
    background: radial-gradient(50% 50% at 50% 50%, rgba(29,29,31,.18) 0%, rgba(29,29,31,0) 70%);
    filter: blur(2px);
    z-index: -1;
  }
  .hero__tagline{
    margin-top: clamp(20px, 2.4vw, 32px);
    font-size: clamp(22px, 2.6vw, 34px);
    font-weight: 400;
    letter-spacing: -0.018em;
    color: var(--ink-2);
    line-height: 1.25;
    max-width: 28ch;
  }
  .hero__tagline em{
    font-style: normal;
    color: var(--ink);
    font-weight: 500;
  }
  .stats{
    margin-top: clamp(56px, 7vw, 96px);
    display:grid;
    grid-template-columns: repeat(4, 1fr);
    gap: clamp(20px, 2vw, 32px);
    border-top: 1px solid var(--rule-soft);
    padding-top: clamp(36px, 4vw, 56px);
  }
  .stat__num{
    font-size: clamp(34px, 4.2vw, 56px);
    font-weight: 600;
    letter-spacing: -0.028em;
    line-height: 1;
    color: var(--ink);
  }
  .stat__label{
    margin-top: 12px;
    color: var(--ink-3);
    font-size: 13.5px;
    line-height: 1.45;
    max-width: 22ch;
  }
  @media (max-width: 820px){
    .stats{ grid-template-columns: repeat(2, 1fr); gap: 28px 24px; }
  }

  /* ---------- ABOUT ---------- */
  .about{ background: var(--bg-alt); }
  .pullquote{
    font-size: clamp(28px, 4.2vw, 52px);
    font-weight: 500;
    letter-spacing: -0.025em;
    line-height: 1.12;
    color: var(--ink);
    max-width: 18ch;
  }
  .pullquote::before{
    content: "";
    display:block;
    width: 32px;
    height: 2px;
    background: var(--accent);
    margin-bottom: 28px;
  }

  .grid-3{
    display:grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(16px, 1.6vw, 24px);
  }
  @media (max-width: 880px){
    .grid-3{ grid-template-columns: 1fr; }
  }
  .card{
    background: var(--bg-elev);
    border: 1px solid var(--rule-soft);
    border-radius: var(--radius);
    padding: clamp(24px, 2.4vw, 36px);
    display:flex;
    flex-direction: column;
    gap: 16px;
    transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
  }
  .card:hover{
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--rule);
  }
  .card__kicker{
    font-size: 12px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
  }
  .card__title{
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.018em;
    line-height: 1.2;
    color: var(--ink);
  }
  .card__body{
    color: var(--ink-2);
    font-size: 15.5px;
    line-height: 1.55;
  }
  .card__meta{
    margin-top: auto;
    padding-top: 12px;
    color: var(--ink-3);
    font-size: 13px;
    border-top: 1px solid var(--rule-soft);
  }

  /* ---------- COMPETENCIES ---------- */
  .comp__num{
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-size: 12px;
    color: var(--ink-3);
    letter-spacing: 0.04em;
  }
  .comp__list{
    margin: 4px 0 0;
    padding: 0;
    list-style: none;
    display:flex; flex-direction:column; gap: 8px;
    color: var(--ink-2);
    font-size: 14.5px;
  }
  .comp__list li{
    display:flex; gap:10px; align-items:flex-start;
  }
  .comp__list li::before{
    content: "";
    display:block;
    width: 4px; height: 4px;
    border-radius: 50%;
    background: var(--ink-3);
    margin-top: 9px;
    flex-shrink: 0;
  }

  /* ---------- CASE STUDY ---------- */
  .case{ background: var(--ink); color: #f5f5f7; position: relative; overflow: hidden; }
  .case .h1{ color: #fff; }
  .case .lede{ color: #a1a1a6; }
  .case .eyebrow{ color: #86868b; }

  .case__head-grid{
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
    align-items: end;
    margin-bottom: clamp(48px, 6vw, 80px);
  }
  @media (max-width: 880px){
    .case__head-grid{ grid-template-columns: 1fr; }
  }
  .case__portrait{
    margin: 0;
    justify-self: end;
    align-self: end;
    height: clamp(280px, 42vh, 440px);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    position: relative;
  }
  .case__portrait img{
    display: block;
    height: 100%;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    filter: drop-shadow(0 24px 22px rgba(0,0,0,.4));
  }
  .case__portrait::after{
    content: "";
    position: absolute;
    left: 50%;
    bottom: -8px;
    transform: translateX(-50%);
    width: 60%;
    height: 18px;
    background: radial-gradient(50% 50% at 50% 50%, rgba(0,0,0,.6) 0%, rgba(0,0,0,0) 70%);
    filter: blur(2px);
    z-index: -1;
  }
  @media (max-width: 880px){
    .case__portrait{ justify-self: center; height: clamp(260px, 50vh, 380px); }
  }

  .case__grid{
    display:grid;
    grid-template-columns: 1.1fr 1fr;
    gap: clamp(40px, 5vw, 80px);
    align-items: start;
  }
  @media (max-width: 880px){
    .case__grid{ grid-template-columns: 1fr; }
  }
  .case__stats{
    display:grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: #2c2c2e;
    border: 1px solid #2c2c2e;
    border-radius: var(--radius);
    overflow: hidden;
    margin-top: 12px;
  }
  .case__stat{
    background: var(--ink);
    padding: clamp(20px, 2.4vw, 32px);
  }
  .case__num{
    font-size: clamp(34px, 4.2vw, 52px);
    font-weight: 600;
    letter-spacing: -0.028em;
    line-height: 1;
    color: #fff;
  }
  .case__lbl{
    margin-top: 10px;
    color: #a1a1a6;
    font-size: 13px;
    line-height: 1.4;
  }

  .bullets{
    list-style: none;
    margin: 0;
    padding: 0;
    display:flex;
    flex-direction: column;
  }
  .bullets li{
    padding: 22px 0;
    border-top: 1px solid #2c2c2e;
    display: grid;
    grid-template-columns: 32px 1fr;
    gap: 16px;
    align-items: baseline;
  }
  .bullets li:last-child{ border-bottom: 1px solid #2c2c2e; }
  .bullets__idx{
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-size: 12px;
    color: #86868b;
    letter-spacing: 0.04em;
  }
  .bullets__txt{
    font-size: 16px;
    line-height: 1.5;
    color: #f5f5f7;
    letter-spacing: -0.008em;
  }

  /* ---------- PROJECTS ---------- */
  .projects-grid{
    display:grid;
    grid-template-columns: repeat(2, 1fr);
    gap: clamp(20px, 2vw, 28px);
  }
  @media (max-width: 720px){
    .projects-grid{ grid-template-columns: 1fr; }
  }
  .project{
    background: var(--bg-elev);
    border: 1px solid var(--rule-soft);
    border-radius: var(--radius);
    overflow: hidden;
    display:flex;
    flex-direction: column;
    transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
  }
  .project:hover{
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--rule);
  }
  .project__art{
    aspect-ratio: 16 / 10;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--rule-soft);
  }
  .project__mono{
    position: absolute;
    inset: 0;
    display:flex;
    align-items:center;
    justify-content:center;
    color: rgba(255,255,255,.85);
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-size: 13px;
    letter-spacing: 0.08em;
    font-weight: 500;
  }
  .art-1{ background: linear-gradient(135deg, #1d1d1f 0%, #2c2c2e 100%); }
  .art-2{ background: linear-gradient(135deg, #0a5cd6 0%, #073f93 100%); }
  .art-3{ background: linear-gradient(135deg, #f5f5f7 0%, #d2d2d7 100%); }
  .art-3 .project__mono{ color: #1d1d1f; }
  .art-4{ background: linear-gradient(135deg, #424245 0%, #1d1d1f 100%); }

  .project__body{
    padding: clamp(20px, 2vw, 28px);
    display:flex;
    flex-direction: column;
    gap: 10px;
  }
  .project__tag{
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-size: 11.5px;
    color: var(--ink-3);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .project__title{
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.018em;
    line-height: 1.2;
  }
  .project__desc{
    color: var(--ink-2);
    font-size: 15px;
    line-height: 1.5;
  }
  .project__cta{
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 18px;
    font-size: 14px;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: -0.005em;
    transition: gap .2s var(--ease), color .2s var(--ease);
  }
  .project__cta svg{
    width: 14px;
    height: 14px;
    transition: transform .2s var(--ease);
  }
  .project__cta:hover{
    color: var(--accent-ink);
    gap: 10px;
  }
  .project__cta:hover svg{
    transform: translateX(2px);
  }

  /* ---------- CONTACT ---------- */
  .contact{
    text-align: center;
    padding-top: clamp(100px, 12vw, 160px);
    padding-bottom: clamp(100px, 12vw, 160px);
  }
  .contact .h1{ margin-bottom: 18px; }
  .contact .lede{ margin: 0 auto; }
  .contact__actions{
    margin-top: clamp(32px, 4vw, 48px);
    display:inline-flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
  }
  .btn{
    display:inline-flex;
    align-items:center;
    gap: 10px;
    padding: 14px 24px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: -0.005em;
    transition: transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
    border: 1px solid transparent;
  }
  .btn--primary{
    background: var(--ink);
    color: #fff;
  }
  .btn--primary:hover{
    background: #000;
    transform: translateY(-1px);
    box-shadow: 0 8px 24px -10px rgba(0,0,0,.4);
  }
  .btn--ghost{
    background: transparent;
    color: var(--ink);
    border-color: var(--rule);
  }
  .btn--ghost:hover{
    background: var(--bg-alt);
    border-color: var(--ink-3);
  }
  .btn svg{ width: 16px; height: 16px; }
  .contact__email{
    margin-top: 28px;
    font-size: 14px;
    color: var(--ink-3);
  }
  .contact__email a{
    color: var(--accent);
    border-bottom: 1px solid transparent;
    transition: border-color .2s var(--ease);
  }
  .contact__email a:hover{ border-color: var(--accent); }

  /* ---------- FOOTER ---------- */
  footer{
    border-top: 1px solid var(--rule-soft);
    padding: 32px 0 40px;
    color: var(--ink-3);
    font-size: 12.5px;
  }
  .footer__inner{
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap: 16px;
    flex-wrap: wrap;
  }
  .footer__links{ display:flex; gap: 24px; }
  .footer__links a:hover{ color: var(--ink-2); }

  /* ---------- Reveal animation ---------- */
  .reveal{
    opacity: 0;
    transform: translateY(16px);
    transition: opacity .8s var(--ease), transform .8s var(--ease);
    transition-delay: var(--rd, 0ms);
  }
  .reveal.is-in{
    opacity: 1;
    transform: translateY(0);
  }
  @media (prefers-reduced-motion: reduce){
    .reveal{ opacity:1; transform:none; transition:none; }
    html{ scroll-behavior: auto; }
  }

  /* ---------- CERTS ---------- */
  .certs-grid{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: clamp(20px, 2vw, 28px);
  }
  .cert{
    background: var(--bg-elev);
    border: 1px solid var(--rule-soft);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
  }
  .cert:hover{
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--rule);
  }
  .cert__thumb{
    aspect-ratio: 3 / 4;
    background: var(--bg-alt);
    overflow: hidden;
    border-bottom: 1px solid var(--rule-soft);
    display: block;
    position: relative;
  }
  .cert__thumb img{
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    padding: 0;
  }
  .cert__thumb--placeholder{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 24px;
    text-align: center;
  }
  .cert__placeholder-icon{
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-ink) 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    letter-spacing: -0.01em;
  }
  .cert__placeholder-label{
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-size: 11.5px;
    color: var(--ink-3);
    letter-spacing: 0.06em;
    text-transform: uppercase;
  }
  .cert__body{
    padding: clamp(18px, 1.8vw, 24px);
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  .cert__kicker{
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
  }
  .cert__title{
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.014em;
    line-height: 1.25;
    margin: 0;
  }
  .cert__meta{
    color: var(--ink-3);
    font-size: 13px;
    margin: 4px 0 0;
    line-height: 1.45;
  }
  .cert__status{
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11.5px;
    color: var(--ink-3);
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-top: 8px;
  }
  .cert__status::before{
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
  }
  .cert__status--done::before{ background: #16a34a; }

  /* certyfikat pionowy (skan 1190x1684) - kafelek przyjmuje proporcje skanu,
     obraz wypełnia go w 100%, cały widoczny, bez przycinania */
  .cert__thumb--fit{
    background: #fff;
    aspect-ratio: 1190 / 1684;
  }
  .cert__thumb--fit img{
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    object-position: center;
    padding: 0;
  }
  /* baton "Poznaj detale" dosunięty do dołu karty, nie wisi w środku */
  .cert__body .btn--ghost{
    margin-top: auto;
    align-self: flex-start;
  }


  .case__cta{
    margin-top: clamp(48px, 6vw, 80px);
    display: flex;
    justify-content: center;
  }
  .btn--on-dark{
    background: #fff;
    color: var(--ink);
  }
  .btn--on-dark:hover{
    background: #f5f5f7;
    transform: translateY(-1px);
    box-shadow: 0 8px 24px -10px rgba(0,0,0,.4);
  }