/* ========= Base ========= */
:root{
  --bg: #0b1220;
  --bg2:#070b14;
  --surface: rgba(255,255,255,.04);
  --surface2: rgba(0,0,0,.26);
  --border: rgba(232,238,252,.12);
  --text: #f4f7ff;
  --muted: rgba(244,247,255,.80);
  --accent: #6ea8fe;
  --accent2: #8a5cf6;
  --shadow: 0 12px 30px rgba(0,0,0,.30);
  --topbar: rgba(11,18,32,.72);
  --radius: 18px;
  --container: 1120px;
  --h1: clamp(34px, 4.2vw, 52px);
  --h2: clamp(22px, 2.4vw, 30px);
  --h3: 18px;
  --p: 16px;
  --lh: 1.65;
  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;
  --page-bg:
    radial-gradient(1200px 600px at 10% -10%, rgba(110,168,254,.22), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(138,92,246,.18), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg2) 70%);
}

:root[data-theme="light"]{
  --bg: #f7f8fb;
  --bg2:#eef1f7;
  --surface: rgba(255,255,255,.9);
  --surface2: rgba(255,255,255,.7);
  --border: rgba(16,24,40,.12);
  --text: #101828;
  --muted: rgba(16,24,40,.72);
  --accent: #2457ff;
  --accent2: #7a3cff;
  --shadow: 0 12px 30px rgba(16,24,40,.12);
  --topbar: rgba(247,248,251,.82);
}

*{box-sizing:border-box}
html,body{height:100%;min-height:100%}
html{
  scroll-behavior: smooth;
  background-color: var(--bg);
}

body{
  margin: 0;
  padding-top: var(--topbar-offset, 72px);
  overflow-x: hidden;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  font-size: var(--p);
  line-height: var(--lh);
  color: var(--text);
  background-color: var(--bg); /* tylko jednolite tło */
}


a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}

.container{
  width:min(100% - 32px, var(--container));
  margin:0 auto;
}

/* ========= Top bar ========= */
.topbar{
  width: 100%;
  position: fixed;
  top:0;
  left:0;
  right:0;
  z-index:10;
  backdrop-filter: blur(10px);
  background: var(--topbar);
  border-bottom: 1px solid var(--border);
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: var(--space-3);
  padding: 14px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  min-width: 170px;
}

.logo-link{
  display: inline-flex;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.brand-logo{
  width: 100%;
  background: linear-gradient(120deg, color-mix(in oklab, var(--accent) 70%, transparent), color-mix(in oklab, var(--accent2) 70%, transparent));
  height: 100%;
  display: block;
  object-fit: cover;
}

.brand strong{font-weight:700;letter-spacing:-0.02em}
.brand span{color:var(--muted);font-size:13px;display:block;margin-top:2px}

.nav{
  display:flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-content:center;
}
.nav a{
  color: var(--muted);
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
}
.nav a:hover{
  color: var(--text);
  background: var(--surface);
  text-decoration:none;
}
.nav a[aria-current="page"]{
  color: var(--text);
  border-color: var(--border);
  background: var(--surface);
}

.tools{
  display:flex;
  gap: 10px;
  justify-content:flex-end;
  min-width: 170px;
}
.iconbtn{
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 9px 12px;
  cursor:pointer;
  transition: transform .15s ease, background .15s ease;
}
.iconbtn:hover{transform:translateY(-1px);background: color-mix(in oklab, var(--surface) 70%, transparent)}

/* ========= Hero ========= */
.hero{
  position: relative;
  overflow: hidden;
  padding: var(--space-7) 0 var(--space-6);
  background: var(--page-bg);
  background-repeat: no-repeat;
}

.hero::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:0;
  height: 80px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events:none;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.4fr .6fr;
  gap: var(--space-6);
  align-items:center;
}
.kicker{
  display:inline-flex;
  gap: 10px;
  align-items:center;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-size: 13px;
}
.kdot{
  width:10px;height:10px;border-radius:99px;
  background: linear-gradient(120deg, var(--accent), var(--accent2));
}
h1{
  margin: var(--space-3) 0 var(--space-3);
  font-size: var(--h1);
  letter-spacing:-0.03em;
  line-height:1.08;
}
.lead{
  margin:0 0 var(--space-4);
  color: var(--muted);
  max-width: 70ch;
}
.actions{
  display:flex;
  flex-wrap:wrap;
  gap: 12px;
  margin-top: var(--space-4);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  text-decoration:none;
  transition: transform .15s ease, background .15s ease;
}
.btn:hover{transform:translateY(-1px);background: color-mix(in oklab, var(--surface) 70%, transparent);text-decoration:none}
.btn.primary{
  border-color: color-mix(in oklab, var(--accent) 45%, transparent);
  background: linear-gradient(90deg, color-mix(in oklab, var(--accent) 22%, transparent), color-mix(in oklab, var(--accent2) 18%, transparent));
}
.meta{
  display:flex;
  gap: 16px;
  flex-wrap:wrap;
  margin-top: var(--space-5);
  color: var(--muted);
  font-size: 14px;
}
.metaitem{
  display:flex;align-items:center;gap:10px;
  padding: 10px 12px;
  border-radius: 14px;
  background: var(--surface2);
  border: 1px solid var(--border);
}

.portrait{
  display:flex;
  align-items:center;
  justify-content:center;
}
.portrait-card{
  width: min(360px, 100%);
  border-radius: 28px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface) 70%, transparent);
  box-shadow: var(--shadow);
  padding: var(--space-4);
}
.avatar{
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 22px;
  border: 1px solid var(--border);
  overflow:hidden;
  background:
    radial-gradient(200px 200px at 30% 20%, color-mix(in oklab, var(--accent) 35%, transparent), transparent 60%),
    radial-gradient(250px 250px at 80% 60%, color-mix(in oklab, var(--accent2) 28%, transparent), transparent 60%),
    linear-gradient(180deg, color-mix(in oklab, var(--bg) 70%, transparent), color-mix(in oklab, var(--bg2) 90%, transparent));
  display:flex;align-items:center;justify-content:center;
}
.avatar img{width:100%;height:100%;object-fit:cover}
.initials{
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
  opacity:.9;
}
.portrait-note{
  margin: var(--space-3) 0 0;
  color: var(--muted);
  font-size: 13px;
  text-align:center;
}

/* ========= Sections ========= */
.section{
  padding: var(--space-6) 0;
  scroll-margin-top: calc(var(--topbar-offset, 72px) + 16px);
}
.section-header{
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}
h2{
  margin:0;
  font-size: var(--h2);
  letter-spacing:-0.02em;
}
.sub{
  margin:0;
  color: var(--muted);
  max-width: 70ch;
}

.card{
  overflow-wrap: anywhere;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface2);
  padding: var(--space-4);
}
.grid{
  display:grid;
  gap: var(--space-4);
}
.grid.two{grid-template-columns: repeat(2, 1fr);}
.grid.three{grid-template-columns: repeat(3, 1fr);}

@media (max-width: 980px){
  .hero-grid{grid-template-columns: 1fr; }
  .nav{display:none;}
  .grid.two, .grid.three{grid-template-columns: 1fr;}
  .brand span{display:none;}
}

/* ========= Skills ========= */
.skill-row{
  display:flex;
  justify-content:space-between;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid color-mix(in oklab, var(--border) 70%, transparent);
}
.skill-row:last-child{border-bottom:none}
.skill-row b{font-weight:600}
.badge{
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 6px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

/* ========= Timeline ========= */
.timeline{
  position:relative;
  padding-left: 18px;
}

.titem{
  position: relative;
  padding-left: 32px; /* <-- KLUCZOWE */
}
.titem:last-child{padding-bottom:0}
.titem:before{
  content:"";
  position:absolute;
  left: -2px; top: 6px;
  width: 14px; height: 14px; border-radius:99px;
  background: linear-gradient(120deg, var(--accent), var(--accent2));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--bg) 80%, transparent);
}
.tmeta{color:var(--muted);font-size:13px;margin: 2px 0 10px}
.tdesc{margin:0;color:var(--text);opacity:.92}

/* ========= Projects ========= */
.project{
  display:flex;
  flex-direction:column;
  gap: 12px;
}
.project h3{margin:0;font-size: 18px;letter-spacing:-0.01em}
.project p{margin:0;color:var(--muted)}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top: 6px}
.tag{
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  opacity:.95;
}
.project .links{display:flex;gap:10px;flex-wrap:wrap;margin-top: 6px}

/* ========= Lists ========= */
.cleanlist{
  margin:0;
  padding-left: 18px;
  color: var(--muted);
}
.cleanlist li{margin: 8px 0}

.small{
  font-size: 13px;
  color: var(--muted);
}

/* ========= Footer ========= */
.footer{
  padding: var(--space-6) 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
}
.footer .row{
  display:flex;
  justify-content:space-between;
  gap: var(--space-4);
  flex-wrap:wrap;
}
.footer a{color: var(--text); opacity:.9}
.footer a:hover{opacity:1}

/* ========= Reveal (subtle) ========= */
[data-reveal]{
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .6s ease, transform .6s ease;
}
[data-reveal].is-visible{
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  [data-reveal]{opacity:1;transform:none;transition:none}
  .btn,.iconbtn{transition:none}
}


/* ========= Accessibility ========= */
.skip-link{
  position: fixed;
  left: 12px;
  top: 10px;
  transform: translateY(-200%);
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  z-index: 120;
}
.skip-link:focus{ transform: translateY(0); }

a:focus-visible, button:focus-visible, summary:focus-visible{
  outline: 3px solid rgba(110,168,254,.75);
  outline-offset: 2px;
}

/* ========= Mobile drawer ========= */
.drawer[hidden]{ display:none; }
.drawer{
  position: fixed;
  inset: 0;
  z-index: 60;
}
.drawer-backdrop{
  position:absolute;
  inset:0;
  background: rgba(0,0,0,.55);
}
.drawer-panel{
  position:absolute;
  right: 0;
  top: 0;
  height: 100%;
  width: min(92vw, 380px);
  background: var(--bg);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 18px;
  display:flex;
  flex-direction: column;
  gap: 14px;
}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
}
.drawer-brand{
  display:flex;
  align-items:center;
  gap: 10px;
}
.drawer-brand span{ display:block; font-size: 13px; color: var(--muted); margin-top:2px; }
.drawer-nav{
  display:flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 6px;
}
.drawer-nav a{
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}
.drawer-nav a:hover{
  text-decoration:none;
  background: rgba(255,255,255,.07);
}

/* Desktop nav stays; show menu button only on small screens */
@media (max-width: 980px){
  .nav{ display:none; }
  [data-mobile-menu-toggle]{ display:inline-flex; }
}
@media (min-width: 981px){
  [data-mobile-menu-toggle]{ display:none; }
}

/* ========= Case-study layout ========= */
.case{
  display:grid;
  gap: 10px;
  margin-top: 8px;
}
.case-row{
  display:grid;
  grid-template-columns: 92px 1fr;
  gap: 12px;
  align-items:start;
}
.case-k{
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  padding-top: 4px;
}
.case-v p{
  margin: 0;
  color: var(--muted);
}
.case-v .placeholder{
  color: rgba(244,247,255,.68);
  border-left: 2px solid rgba(110,168,254,.35);
  padding-left: 10px;
}
.case-row--context .case-v p{
  border-left: 2px solid rgba(110,168,254,.35);
  padding-left: 10px;
}


:root[data-theme="light"] .case-v .placeholder{
  color: rgba(16,24,40,.65);
  border-left-color: rgba(36,87,255,.35);
}

/* Interests: GIF + title layout */
.interest-head{
  display:flex;
  align-items:center;
  gap: 12px;
  margin-bottom: 10px;
}

.interest-title{
  margin: 0;
  font-size: 18px;
}

.interest-text{
  margin: 0;
  color: var(--muted);
}

.interest-gif{
  width: 36px;
  height: 36px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 6px;              /* wygląda bardziej “UI”, mniej jak wklejony gif */
  object-fit: contain;
  flex: 0 0 auto;
}

@media (prefers-reduced-motion: reduce){
  .interest-gif{ display:none; }
}



.marquee{
  display:flex;
  block-size: var(--marquee-item-height);
  margin: 30px 0;
  position: relative;
  overflow: hidden;

  /* mask fade */
  -webkit-mask-image: linear-gradient(
          to right,
          transparent,
          #000 20%,
          #000 80%,
          transparent
  );
  mask-image: linear-gradient(
          to right,
          transparent,
          #000 20%,
          #000 80%,
          transparent
  );
}

.marquee--8{
  --marquee-item-width: 64px;   /* slot na ikonę */
  --marquee-item-height: 34px;
  --marquee-duration: 36s;
  --marquee-items: 8;
}

.marquee__item{
  --marquee-item-offset: max(
          calc(var(--marquee-item-width) * var(--marquee-items)),
          calc(100% + var(--marquee-item-width))
  );
  --marquee-delay: calc(
          var(--marquee-duration) / var(--marquee-items) *
          (var(--marquee-items) - var(--marquee-item-index)) * -1
  );

  position:absolute;
  inset-inline-start: var(--marquee-item-offset);
  transform: translateX(-50%);
  animation: go linear var(--marquee-duration) var(--marquee-delay) infinite;
  will-change: inset-inline-start;

  inline-size: var(--marquee-item-width);
  block-size: var(--marquee-item-height);
  display:grid;
  place-items:center;

  /* zero ramek/tła */
  border:0;
  background:transparent;
  padding:0;
}

/* Ikony */
.marquee__item img{
  display:block;
  width:28px;
  height:28px;
}

/* Indeksy 1..8 */
.marquee--8 .marquee__item:nth-of-type(1){ --marquee-item-index: 1; }
.marquee--8 .marquee__item:nth-of-type(2){ --marquee-item-index: 2; }
.marquee--8 .marquee__item:nth-of-type(3){ --marquee-item-index: 3; }
.marquee--8 .marquee__item:nth-of-type(4){ --marquee-item-index: 4; }
.marquee--8 .marquee__item:nth-of-type(5){ --marquee-item-index: 5; }
.marquee--8 .marquee__item:nth-of-type(6){ --marquee-item-index: 6; }
.marquee--8 .marquee__item:nth-of-type(7){ --marquee-item-index: 7; }
.marquee--8 .marquee__item:nth-of-type(8){ --marquee-item-index: 8; }

@keyframes go{
  to { inset-inline-start: calc(var(--marquee-item-width) * -1); }
}

@media (prefers-reduced-motion: reduce){
  .marquee__item{ animation: none; position: static; transform: none; }
  .marquee{ gap: 18px; justify-content: center; }
}

/* =========================
   Najważniejsze: theming bez JS
   ========================= */

/*
  Zamiast podmieniać src w JS, ustawiamy obrazek przez CSS `content: url()`.
  To działa dla <img>. Atrybut src nie jest wymagany.
*/

/* Light domyślnie (gdy nie ma jawnego data-theme) */
.themed-icon{ content: attr(data-light url); }

/* Dark po systemie (jeśli nie narzucasz data-theme) */
@media (prefers-color-scheme: dark){
  .themed-icon{ content: attr(data-dark url); }
}

/* Jeśli Twój toggle ustawia <html data-theme="dark|light">, to ma priorytet */
html[data-theme="light"] .themed-icon{ content: attr(data-light url); }
html[data-theme="dark"]  .themed-icon{ content: attr(data-dark url); }

/* Jeżeli ustawiasz theme na body zamiast html, dodaj to: */
body[data-theme="light"] .themed-icon{ content: attr(data-light url); }
body[data-theme="dark"]  .themed-icon{ content: attr(data-dark url); }



/* Spring jest szerokim logo — zwiększamy tylko szerokość */
.marquee__item img.spring-logo{
  width: 56px;
  height: 28px;
  transform: scale(1.08);
  transform-origin: center;
}

.github-label{
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.github-icon{
  width: 14px;
  height: 14px;
  opacity: .85;
  transform: translateY(1px); /* lepsze wyrównanie optyczne */
}

.gh-link{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.gh-link:hover{
  text-decoration: underline;
}

.gh-ico{
  width: 14px;
  height: 14px;
  opacity: .9;
  transform: translateY(1px);
}

.btn--github{
  gap: 8px;               /* trochę ciaśniej niż normalny btn */
  color: var(--accent);   /* tekst na niebiesko */
}

.btn--github .gh-ico{
  width: 14px;
  height: 14px;
  opacity: .9;
  transform: translateY(1px);
}

/* opcjonalnie: lekki akcent na hover */
.btn--github:hover .gh-ico{
  opacity: 1;
}
.btn--github:hover{
  color: var(--accent);   /* nie zmieniaj na hover */
}
.btn--github .gh-ico{
   filter: none; /* SVG i tak ma własny fill z themed-icon */
 }