/* ---------------------------------------------------------------------------
   Visual identity: "kolor należy do danych".
   Near-monochrome cool UI (sea-ink on cold paper); the only saturated color
   on the page comes from data series (--s-*), semantic tags, and the hero
   kNN graph. Display face: Bricolage Grotesque (self-hosted, latin-ext).
   Charts read these custom properties at render time — retune tokens here
   and every SVG follows. Series hue roles are load-bearing (prose refers to
   "niebieska/czerwona" lines): blue=Leiden, orange=Louvain, aqua=HDBSCAN.
--------------------------------------------------------------------------- */
@font-face{
  font-family:'Bricolage Grotesque';
  font-style:normal; font-weight:400 800; font-stretch:100%; font-display:swap;
  src:url(../fonts/bricolage-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF,U+2000-206F,U+2074,U+20AC,U+2212,U+2215;
}
@font-face{
  font-family:'Bricolage Grotesque';
  font-style:normal; font-weight:400 800; font-stretch:100%; font-display:swap;
  src:url(../fonts/bricolage-latin-ext.woff2) format('woff2');
  unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0;
}
@font-face{
  font-family:'Public Sans';
  font-style:normal; font-weight:400 700; font-display:swap;
  src:url(../fonts/publicsans-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF,U+2000-206F,U+2074,U+20AC,U+2212,U+2215;
}
@font-face{
  font-family:'Public Sans';
  font-style:normal; font-weight:400 700; font-display:swap;
  src:url(../fonts/publicsans-latin-ext.woff2) format('woff2');
  unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0;
}

:root{
  color-scheme: light;
  --plane:#e8edf2; --surface:#fbfcfd; --surface-2:#f0f4f7;
  --ink:#101c26; --ink-2:#42525f; --ink-muted:#75828e;
  --grid:#d8dfe5; --baseline:#b4bec7; --border:rgba(16,28,38,.13);
  --accent:#155fba; --accent-soft:#e2ecf9;
  --s-blue:#2a6fd2; --s-orange:#d96a22; --s-aqua:#0e9c74;
  --good:#0b8a44; --good-soft:#e2f2e8;
  --warn:#b27a00; --warn-soft:#f7eed8;
  --crit:#c43a3a; --crit-soft:#f8e5e5;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --sans:'Public Sans',system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --display:'Bricolage Grotesque','Public Sans',system-ui,sans-serif;
}
@media (prefers-color-scheme: dark){
  :root:where(:not([data-theme="light"])){
    color-scheme: dark;
    --plane:#0a0f14; --surface:#11181f; --surface-2:#171f28;
    --ink:#e9eef2; --ink-2:#b7c2cb; --ink-muted:#808d98;
    --grid:#232c35; --baseline:#37424c; --border:rgba(255,255,255,.13);
    --accent:#6fa6ee; --accent-soft:#14243a;
    --s-blue:#4e8ce8; --s-orange:#e58a4c; --s-aqua:#26bd8e;
    --good:#40bf74; --good-soft:#12281b;
    --warn:#dda62e; --warn-soft:#2a2310;
    --crit:#e66a6a; --crit-soft:#2c1515;
  }
}
:root[data-theme="dark"]{
  color-scheme: dark;
  --plane:#0a0f14; --surface:#11181f; --surface-2:#171f28;
  --ink:#e9eef2; --ink-2:#b7c2cb; --ink-muted:#808d98;
  --grid:#232c35; --baseline:#37424c; --border:rgba(255,255,255,.13);
  --accent:#6fa6ee; --accent-soft:#14243a;
  --s-blue:#4e8ce8; --s-orange:#e58a4c; --s-aqua:#26bd8e;
  --good:#40bf74; --good-soft:#12281b;
  --warn:#dda62e; --warn-soft:#2a2310;
  --crit:#e66a6a; --crit-soft:#2c1515;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--plane); color:var(--ink);
  font-family:var(--sans); line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:960px; margin:0 auto; padding:0 24px 96px}
.hd{
  max-width:960px; margin:0 auto; padding:48px 24px 16px;
  display:grid; grid-template-columns:minmax(0,1fr) 320px;
  gap:8px 36px; align-items:center;
}
.hd-text{min-width:0}
#hero-graph{width:100%; height:auto; display:block}
#hero-graph .hg-edge{stroke:var(--baseline); stroke-width:1; --o:.55}
#hero-graph .hg-edge.x{stroke-dasharray:3 4; --o:.4}
#hero-graph .hg-node.noise{fill:var(--ink-muted); --o:.45}
@media(max-width:760px){
  .hd{grid-template-columns:1fr; gap:4px}
  #hero-graph{max-width:300px; margin:8px auto 0}
}
a{color:var(--accent)}
h1{
  font-family:var(--display); font-weight:760;
  font-size:clamp(1.8rem,4.4vw,2.7rem); line-height:1.04;
  letter-spacing:-.025em; margin:.2em 0 .15em; text-wrap:balance;
}
h2{
  font-family:var(--display); font-weight:640;
  font-size:1.45rem; letter-spacing:-.015em; margin:2.6em 0 .2em;
  text-wrap:balance; scroll-margin-top:16px;
}
h2 .num{font-family:var(--mono); font-size:.85rem; color:var(--ink-muted); font-weight:600; margin-right:.6em; vertical-align:.18em}
h3{font-family:var(--display); font-weight:600; font-size:1.08rem; letter-spacing:-.01em; margin:1.6em 0 .3em}
p{margin:.7em 0; max-width:72ch}
/* jednolita kolumna czytania dla prozy (dane/figury zostają szerokie) */
.wrap :is(p,ul,ol){max-width:72ch}
.callout,.tldr{max-width:72ch}
.figure figcaption{max-width:72ch}
.eyebrow{font-family:var(--mono); font-size:.72rem; letter-spacing:.16em; text-transform:uppercase; color:var(--ink-muted); margin:0}
.lede{font-size:1.12rem; color:var(--ink-2); max-width:64ch}
.facts{display:flex; flex-wrap:wrap; gap:8px; margin:18px 0 6px; padding:0; list-style:none; grid-column:1/-1}
.facts li{font-family:var(--mono); font-size:.78rem; background:var(--surface); border:1px solid var(--border); border-radius:999px; padding:5px 12px; color:var(--ink-2)}
.facts b{color:var(--ink); font-weight:600}
.bar{position:sticky; top:0; z-index:20; background:color-mix(in srgb, var(--plane) 86%, transparent); backdrop-filter:blur(8px); border-bottom:1px solid var(--border)}
.bar .inner{max-width:960px; margin:0 auto; padding:8px 24px; display:flex; align-items:center; gap:16px; flex-wrap:wrap}
.bar .brand{font-family:var(--display); font-weight:640; font-size:.9rem; letter-spacing:-.01em}
.bar nav{display:flex; gap:14px; flex-wrap:wrap; font-size:.82rem}
.bar nav a{color:var(--ink-2); text-decoration:none}
.bar nav a:hover{color:var(--accent)}
.toggle{margin-left:auto; font:inherit; font-size:.8rem; cursor:pointer; background:var(--surface); color:var(--ink-2); border:1px solid var(--border); border-radius:999px; padding:5px 12px}
.toggle:hover{color:var(--ink)}
.card{background:var(--surface); border:1px solid var(--border); border-radius:12px; padding:20px 22px; margin:16px 0}
.tldr{background:var(--surface); border:1px solid var(--border); border-left:4px solid var(--accent); border-radius:10px; padding:18px 22px; margin:24px 0}
.tldr h3{margin-top:0}
.tldr ol{margin:.4em 0; padding-left:1.3em}
.tldr li{margin:.35em 0}
.grid3{display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin:18px 0}
@media(max-width:680px){.grid3{grid-template-columns:1fr}}
.metric{background:var(--surface); border:1px solid var(--border); border-radius:12px; padding:16px 18px}
.metric .m-name{font-family:var(--display); font-weight:620; display:flex; align-items:center; gap:8px}
.dot{width:11px; height:11px; border-radius:50%; display:inline-block; flex:none}
.metric .m-sub{font-size:.8rem; color:var(--ink-muted); margin:2px 0 12px}
.metric dl{display:grid; grid-template-columns:1fr auto; gap:3px 10px; margin:0; font-size:.86rem}
.metric dt{color:var(--ink-2)}
.metric dd{margin:0; font-family:var(--mono); font-variant-numeric:tabular-nums; text-align:right; font-weight:600}
.win{color:var(--good)}
.figure{background:var(--surface); border:1px solid var(--border); border-radius:12px; padding:18px 18px 12px; margin:18px 0}
.figure figcaption{font-size:.85rem; color:var(--ink-2); margin-top:10px; max-width:70ch}
.figure .f-title{font-family:var(--display); font-weight:620; font-size:.95rem; margin-bottom:2px}
.figure .f-hint{font-size:.78rem; color:var(--ink-muted); margin-bottom:10px}
.figure img{width:100%; height:auto; display:block; border-radius:8px; background:#fff; border:1px solid var(--border); cursor:zoom-in}
.figure a{display:block; text-decoration:none}
.figure.wide{position:relative; left:50%; transform:translateX(-50%); width:96vw; max-width:1400px}
.legend{display:flex; flex-wrap:wrap; gap:14px; margin:4px 0 8px; font-size:.82rem; color:var(--ink-2)}
.legend span{display:inline-flex; align-items:center; gap:7px}
.legend .swatch{width:14px; height:3px; border-radius:2px}
.chart-scroll{overflow-x:auto}
svg.chart{width:100%; height:auto; min-width:520px; display:block; font-family:var(--sans)}
.tbl-scroll{overflow-x:auto; margin:14px 0}
table{border-collapse:collapse; width:100%; font-size:.85rem; min-width:560px}
th,td{padding:7px 11px; text-align:right; border-bottom:1px solid var(--grid); font-variant-numeric:tabular-nums}
th:first-child,td:first-child{text-align:left; font-variant-numeric:normal}
thead th{color:var(--ink-2); font-weight:600; border-bottom:1px solid var(--baseline); position:sticky; top:0; background:var(--surface)}
tbody tr:hover{background:var(--surface-2)}
td.num{font-family:var(--mono)}
td.l{text-align:left}
td.lm{text-align:left;color:var(--ink-muted)}
td.ttl{text-align:left;color:var(--ink-2);font-size:.9em}
tr.hl{background:var(--good-soft)}
tr.hl:hover{background:var(--good-soft)}
tr.bad td{color:var(--ink-muted)}
.tag{font-family:var(--mono); font-size:.72rem; padding:2px 7px; border-radius:5px; font-weight:600; white-space:nowrap}
.tag.good{background:var(--good-soft); color:var(--good)}
.tag.warn{background:var(--warn-soft); color:var(--warn)}
.tag.crit{background:var(--crit-soft); color:var(--crit)}
.callout{border-radius:10px; padding:14px 18px; margin:16px 0; font-size:.92rem; border:1px solid var(--border)}
.callout.crit{background:var(--crit-soft); border-color:color-mix(in srgb,var(--crit) 35%,transparent)}
.callout.good{background:var(--good-soft); border-color:color-mix(in srgb,var(--good) 35%,transparent)}
.callout b{color:var(--ink)}
.gloss{width:100%; font-size:.88rem}
.gloss td{text-align:left; vertical-align:top}
.gloss td:first-child{font-weight:600; white-space:nowrap; width:150px}
.gloss td:nth-child(3){color:var(--ink-muted); white-space:nowrap; width:88px; text-align:right}
code{font-family:var(--mono); font-size:.86em; background:var(--surface-2); padding:1px 5px; border-radius:4px; border:1px solid var(--border)}
pre{font-family:var(--mono); font-size:.8rem; background:var(--surface); border:1px solid var(--border); border-radius:10px; padding:14px 16px; overflow-x:auto; line-height:1.5}
.foot{margin-top:48px; padding-top:20px; border-top:1px solid var(--border); font-size:.82rem; color:var(--ink-muted)}

/* --- lekcja: żeton kroku przy h2 ---------------------------------------- */
h2 .step{
  display:inline-grid; place-items:center; width:1.5em; height:1.5em;
  margin-right:.45em; vertical-align:-.22em;
  border:2px solid var(--accent); border-radius:50%;
  font-family:var(--mono); font-size:.72em; font-weight:700; color:var(--accent);
  background:var(--accent-soft);
}

/* --- plan lekcji: klikalna ścieżka kart --------------------------------- */
.path{
  display:grid; grid-template-columns:repeat(4,1fr); gap:10px;
  margin:18px 0; padding:0; list-style:none; counter-reset:step;
  max-width:none;
}
.path li{counter-increment:step}
.path a{
  display:block; height:100%; padding:12px 14px 10px;
  background:var(--surface); border:1px solid var(--border); border-radius:12px;
  color:var(--ink); text-decoration:none;
  transition:border-color .15s, transform .15s;
}
.path a:hover{border-color:var(--accent); transform:translateY(-2px)}
.path a::before{
  content:counter(step,decimal-leading-zero);
  display:block; font-family:var(--mono); font-size:.7rem; font-weight:700;
  color:var(--accent); letter-spacing:.08em; margin-bottom:4px;
}
.path b{font-family:var(--display); font-weight:640; font-size:.92rem; display:block; letter-spacing:-.01em}
.path span{display:block; font-size:.76rem; color:var(--ink-muted); margin-top:2px; line-height:1.35}
@media(max-width:760px){.path{grid-template-columns:repeat(2,1fr)}}

/* --- diagramy pojęciowe (inline SVG, kolory z tokenów) ------------------ */
.diagram{margin:20px 0; overflow-x:auto}
.diagram svg{width:100%; min-width:560px; height:auto; display:block; font-family:var(--sans)}
.diagram .d-cap{font-size:.85rem; color:var(--ink-2); margin-top:8px; max-width:72ch}
.dg-lab{font-family:var(--mono); font-size:11px; fill:var(--ink-muted)}
.dg-lab.big{font-size:13px; font-weight:700; fill:var(--ink)}
.dg-txt{font-size:12px; fill:var(--ink-2)}
.dg-txt.s{font-size:10.5px; fill:var(--ink-muted)}
.dg-arrow{stroke:var(--ink-2); stroke-width:1.6; fill:none; marker-end:url(#dg-head)}
.dg-edge{stroke:var(--baseline); stroke-width:1; fill:none}
.dg-ring{fill:none; stroke-dasharray:4 4; stroke-width:1.3; opacity:.7}
.dg-panel{fill:var(--surface); stroke:var(--border)}
.dg-chip{fill:var(--accent-soft)}
.dg-chip-t{font-family:var(--mono); font-size:9.5px; font-weight:600; fill:var(--accent)}

/* --- etykiety calloutów -------------------------------------------------- */
.callout .kicker,.tldr .kicker{
  display:block; font-family:var(--mono); font-size:.68rem; font-weight:700;
  letter-spacing:.14em; text-transform:uppercase; margin-bottom:4px;
}
.callout.crit .kicker{color:var(--crit)}
.callout.good .kicker{color:var(--good)}
#tip{position:fixed; pointer-events:none; z-index:50; background:var(--ink); color:var(--plane); font-family:var(--mono); font-size:.74rem; padding:6px 9px; border-radius:6px; opacity:0; transition:opacity .1s; max-width:240px; line-height:1.4}
#lightbox{position:fixed; inset:0; z-index:100; background:rgba(0,0,0,.92); display:none; align-items:center; justify-content:center; padding:2vh 2vw; cursor:zoom-out; overflow:auto}
#lightbox.open{display:flex}
#lightbox img{max-width:98vw; height:auto; background:#fff; border-radius:6px; box-shadow:0 8px 40px rgba(0,0,0,.5)}
#lightbox .hint{position:fixed; top:14px; right:18px; color:#fff; font-family:var(--mono); font-size:.8rem; opacity:.8}
:focus-visible{outline:2px solid var(--accent); outline-offset:2px}
/* hero graph entrance: staggered fade via --d (set inline per element) */
#hero-graph .hg-edge,#hero-graph .hg-node{opacity:0; animation:hg-in .5s ease-out forwards; animation-delay:var(--d,0s)}
@keyframes hg-in{to{opacity:var(--o,1)}}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important; scroll-behavior:auto; animation:none!important}
  #hero-graph .hg-edge,#hero-graph .hg-node{opacity:var(--o,1)}
}