/* site-src/atlas.css — Atlas v2: an encyclopedia that reads like a good book. Serif prose, sans UI, one ink accent, light and dark. */
/* the hidden attribute always wins over component display rules (.btn is inline-flex: without this a hidden button shows) */
[hidden] { display: none !important; }
:root {
  --bg: #fbfaf7; --paper: #ffffff; --ink: #1c1d21; --muted: #62646c; --faint: #8b8d94; --line: #e6e3dc; --line-strong: #d3cfc5;
  --accent: #2952e3; --accent-ink: #1f3fb8; --accent-soft: #eaefff; --code: #f1efe9; --mark: #fff3c4;
  --shadow: 0 1px 2px rgba(28,29,33,.04), 0 8px 24px rgba(28,29,33,.06); --radius: 14px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) {
  --bg: #111214; --paper: #191a1d; --ink: #ecebe8; --muted: #a3a4aa; --faint: #7d7f86; --line: #2a2b2f; --line-strong: #3a3b40;
  --accent: #7d9bff; --accent-ink: #a5b9ff; --accent-soft: #1d2440; --code: #23242a; --mark: #3d3410;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
} }
:root[data-theme="dark"] {
  --bg: #111214; --paper: #191a1d; --ink: #ecebe8; --muted: #a3a4aa; --faint: #7d7f86; --line: #2a2b2f; --line-strong: #3a3b40;
  --accent: #7d9bff; --accent-ink: #a5b9ff; --accent-soft: #1d2440; --code: #23242a; --mark: #3d3410;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
}
* { box-sizing: border-box; }
html { color-scheme: light dark; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 76px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
a:focus-visible, input:focus-visible, button:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible, [tabindex]:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.btn:focus-visible, .btn-text:focus-visible, .read-toggle:focus-visible { border-radius: 20px; }
@media (prefers-reduced-motion: no-preference) { @view-transition { navigation: auto; } }
.skip { position: absolute; left: -9999px; } .skip:focus { left: 16px; top: 8px; z-index: 50; background: var(--paper); padding: 8px 12px; border-radius: 8px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.muted { color: var(--muted); }

/* header */
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px); border-bottom: 1px solid var(--line); }
.bar { max-width: 1180px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); font: 700 1.12rem/1 var(--serif); letter-spacing: .01em; }
.brand:hover { text-decoration: none; }
.mark { width: 22px; height: 22px; color: var(--accent); flex: none; }
.menu { display: flex; align-items: center; gap: 22px; font-size: .92rem; }
.menu a { color: var(--muted); } .menu a:hover { color: var(--ink); text-decoration: none; }
.menu .lang { font-weight: 600; border: 1px solid var(--line-strong); border-radius: 999px; padding: 2px 10px; }
.menu .support { color: var(--accent-ink); font-weight: 600; }
.crumbs { max-width: 1180px; margin: 0 auto; padding: 14px 20px 0; font-size: .86rem; color: var(--faint); }
.crumbs a { color: var(--muted); } .crumbs .sep { margin: 0 8px; color: var(--line-strong); }

/* page frame */
main { margin: 0 auto; padding: 8px 20px 72px; }
main.narrow { max-width: 760px; } main.wide { max-width: 1180px; }
h1, h2, h3 { font-family: var(--serif); color: var(--ink); line-height: 1.2; letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 4.2vw, 2.9rem); margin: .2em 0 .45em; font-weight: 700; }
h2 { font-size: 1.55rem; margin: 2.2em 0 .6em; font-weight: 700; }
h3 { font-size: 1.15rem; margin: 1.6em 0 .4em; }
.kicker { font: 600 .78rem/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); margin: 28px 0 0; }
.kicker a { color: var(--accent-ink); }
.lead { font: 1.22rem/1.55 var(--serif); color: var(--muted); max-width: 46em; }
.section-title { margin-top: 2.6em; } .section-title a { color: var(--ink); }

/* hero + search */
.hero { padding: 20px 0 8px; max-width: 820px; }
.hero h1 { font-size: clamp(2.3rem, 5.6vw, 3.6rem); }
.search { position: relative; margin: 26px 0 6px; max-width: 640px; }
.search input { width: 100%; font: 1.05rem/1.4 var(--sans); padding: 15px 18px 15px 46px; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--paper) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b8d94' stroke-width='2.2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-3.5-3.5'/%3E%3C/svg%3E") no-repeat 17px 50% / 19px; color: var(--ink); box-shadow: var(--shadow); }
.results { list-style: none; margin: 8px 0 0; padding: 6px; position: absolute; left: 0; right: 0; z-index: 10; background: var(--paper); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); }
.results a { display: block; padding: 9px 14px; border-radius: 10px; color: var(--ink); }
.results a:hover, .results a:focus { background: var(--accent-soft); text-decoration: none; }

/* section map */
.sec-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 14px; }
.sec-card { display: flex; flex-direction: column; gap: 6px; padding: 20px 20px 18px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); color: var(--ink); position: relative; overflow: hidden; transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease; }
.sec-card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: var(--hue, var(--accent)); }
.sec-card:hover { text-decoration: none; transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--line-strong); }
.sec-n { font: 700 .8rem/1 var(--mono); color: var(--hue, var(--accent)); }
.sec-card strong { font: 700 1.16rem/1.25 var(--serif); }
.sec-lead { color: var(--muted); font-size: .92rem; line-height: 1.5; }
.sec-count { margin-top: auto; padding-top: 6px; font-size: .8rem; color: var(--faint); font-weight: 600; }
.sec-podstawy { --hue: #3b6fd8; } .sec-dane { --hue: #0f9d8a; } .sec-nadzorowane { --hue: #2952e3; } .sec-ocena { --hue: #c2410c; }
.sec-bez-nadzoru { --hue: #7c3aed; } .sec-sieci { --hue: #0284c7; } .sec-architektury { --hue: #4f46e5; } .sec-llm { --hue: #b0367c; }
.sec-wzmocnienie { --hue: #15803d; } .sec-praktyka { --hue: #a16207; } .sec-prawa { --hue: #b91c1c; }
.sec-hero .kicker { color: var(--hue); }

/* cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.card { display: flex; flex-direction: column; gap: 4px; padding: 16px 18px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; color: var(--ink); transition: border-color .15s ease, box-shadow .15s ease; }
.card:hover { text-decoration: none; border-color: var(--accent); box-shadow: var(--shadow); }
.card strong { font: 700 1.04rem/1.3 var(--serif); }
.card > span:last-child { color: var(--muted); font-size: .88rem; line-height: 1.45; }
.badge { display: inline-block; vertical-align: middle; font: 700 .66rem/1 var(--sans); letter-spacing: .05em; text-transform: uppercase; color: var(--accent-ink); background: var(--accent-soft); padding: 4px 7px; border-radius: 999px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { padding: 7px 13px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--ink); background: var(--paper); font-size: .9rem; }
.chip:hover { border-color: var(--accent); text-decoration: none; }

/* section page list */
.toc-list { list-style: none; counter-reset: t; padding: 0; margin: 24px 0; display: grid; gap: 2px; max-width: 860px; }
.toc-list li { counter-increment: t; }
.toc-list a { display: grid; grid-template-columns: 2.6em 1fr; column-gap: 8px; padding: 14px 12px; border-radius: 10px; color: var(--ink); }
.toc-list a::before { content: counter(t, decimal-leading-zero); grid-row: span 2; font: 600 .85rem/1.6 var(--mono); color: var(--faint); }
.toc-list a:hover { background: var(--paper); text-decoration: none; }
.toc-list strong { font: 700 1.08rem/1.35 var(--serif); }
.toc-list span:not(.badge) { color: var(--muted); font-size: .92rem; }

/* A–Z */
.az { columns: 4 220px; column-gap: 28px; }
.az-group { break-inside: avoid; margin-bottom: 18px; }
.az-group h2,.az-group h3 { font: 700 1rem/1 var(--mono); color: var(--accent); margin: 0 0 6px; border-bottom: 1px solid var(--line); padding-bottom: 6px; }
.az-group ul { list-style: none; margin: 0; padding: 0; }
.az-group li { font-size: .93rem; padding: 2px 0; }

/* topic page */
.page-grid { display: grid; grid-template-columns: 210px minmax(0, 720px); gap: 56px; justify-content: center; }
.toc { position: sticky; top: 84px; align-self: start; padding-top: 34px; font-size: .88rem; }
.toc-title { font: 700 .74rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); margin: 0 0 12px; }
.toc ol { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--line); }
.toc li a { display: block; padding: 5px 0 5px 14px; margin-left: -2px; border-left: 2px solid transparent; color: var(--muted); }
.toc li a:hover { color: var(--ink); border-left-color: var(--accent); text-decoration: none; }
.term { font: 1.09rem/1.72 var(--serif); }
.term h1 { font-size: clamp(1.9rem, 3.8vw, 2.6rem); }
.term p, .term li, .term dd { color: var(--ink); }
.term ul, .term ol { padding-left: 1.3em; } .term li { margin: .3em 0; }
.term code { font: .86em/1.4 var(--mono); background: var(--code); padding: .12em .38em; border-radius: 5px; }
.term strong { font-weight: 700; }
.answer { margin: 6px 0 8px; padding: 16px 20px; background: var(--accent-soft); border-radius: 12px; border-left: 4px solid var(--accent); }
.answer p { margin: 0; font-size: 1.12rem; line-height: 1.6; }
.answer .answer-label { font: 700 .72rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--accent-ink); margin-bottom: 8px; }
.faq dt { font-weight: 700; margin-top: 1.1em; }
.faq dd { margin: .3em 0 0; color: var(--muted); }
.sources { font: .92rem/1.55 var(--sans); color: var(--muted); }
.sources a { word-break: break-word; }
.term .cards { font: 1rem/1.5 var(--sans); }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 40px; font: .95rem/1.4 var(--sans); }
.pager a { display: flex; flex-direction: column; gap: 2px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); font-weight: 600; }
.pager a span { font-weight: 500; color: var(--faint); font-size: .82rem; }
.pager .next { text-align: right; } .pager a:hover { border-color: var(--accent); text-decoration: none; }
.cite { margin-top: 2em; padding: 14px 18px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; font: .9rem/1.55 var(--sans); }
.term .cite p { margin: 0; color: var(--muted); }
.term .cite .cite-label { font: 700 .72rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); margin-bottom: 6px; }
.cite a { word-break: break-all; }
.term .support-line { margin: 1em 0 0; font: .95rem/1.5 var(--sans); color: var(--muted); }
.support-line .support { font-weight: 600; color: var(--accent-ink); white-space: nowrap; }

/* interactive illustrations */
.widget, .experiment { margin: 22px 0; padding: 20px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); font: .95rem/1.5 var(--sans); }
.widget .fallback, .experiment .fallback { color: var(--muted); margin: 0; }
.exp-hint { color: var(--muted); margin: 0 0 10px; }
.exp-label { font-weight: 600; margin: 8px 0 4px; }
.exp-slider { width: 100%; accent-color: var(--accent); }
.exp-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: 10px; }
.exp-chart { display: block; width: 100%; max-width: 100%; height: auto; margin: 12px 0; background: var(--bg); border-radius: 10px; }
.exp-verdict { margin: 10px 0 0; padding: 12px 14px; background: var(--bg); border-radius: 10px; border-left: 3px solid var(--accent); }
.exp-choices { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0; }
.exp-choice { font: 600 .88rem/1.2 var(--sans); padding: 8px 13px; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--bg); color: var(--ink); cursor: pointer; }
.exp-choice[aria-pressed="true"], .exp-choice.on { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.exp-choice:disabled { opacity: .45; cursor: default; }
.w-row { display: flex; flex-wrap: wrap; gap: 14px 22px; align-items: center; margin: 8px 0; }
.w-row label { display: flex; flex-direction: column; gap: 4px; font-weight: 600; flex: 1 1 200px; }
.w-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 8px; margin: 10px 0; }
.w-stat { background: var(--bg); border-radius: 10px; padding: 10px 12px; }
.w-stat b { display: block; font: 700 1.35rem/1.2 var(--sans); font-variant-numeric: tabular-nums; }
.w-stat span { color: var(--muted); font-size: .8rem; }
.w-legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: .84rem; color: var(--muted); margin: 6px 0; }
.w-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: -1px; }

/* datasets */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); }
table.data { border-collapse: collapse; width: 100%; font: .88rem/1.4 var(--sans); font-variant-numeric: tabular-nums; }
table.data th, table.data td { padding: 8px 12px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
table.data.cols td:nth-child(2), table.data.cols td:nth-child(5) { white-space: normal; min-width: 180px; }
table.data th { font-weight: 700; color: var(--muted); background: var(--bg); }
table.data tr:last-child td { border-bottom: 0; }
.na { color: var(--faint); font-style: italic; }
.digits { display: flex; flex-wrap: wrap; gap: 10px; color: var(--ink); }
.digits figure { margin: 0; text-align: center; font: 600 .8rem/1.6 var(--mono); color: var(--muted); }
.digits svg { background: var(--paper); border: 1px solid var(--line); border-radius: 6px; display: block; }

/* footer */
.bottom { border-top: 1px solid var(--line); background: var(--paper); }
.foot { max-width: 1180px; margin: 0 auto; padding: 28px 20px 36px; font-size: .88rem; color: var(--muted); }
.foot-brand { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; color: var(--ink); }
.foot-brand strong { font-family: var(--serif); }
.foot-social { display: flex; flex-wrap: wrap; gap: 6px 16px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 6px 16px; }

@media (max-width: 1000px) {
  .page-grid { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .toc { position: static; padding-top: 10px; display: none; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .bar { padding: 10px 16px; } main { padding: 4px 16px 56px; } .crumbs { padding: 10px 16px 0; }
  .menu { gap: 12px; font-size: .84rem; }
  .menu .support-txt { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  .term { font-size: 1.04rem; }
  .pager { grid-template-columns: 1fr; }
  .exp-chart { min-width: 480px; }
  .widget, .experiment { padding: 14px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
.ds-used { font: .88rem/2.2 var(--sans); color: var(--muted); }
.ds-used .chip { font-size: .84rem; padding: 4px 10px; margin-left: 4px; }
.paths { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.path { display: flex; flex-direction: column; gap: 4px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; color: var(--ink); }
.path:hover { border-color: var(--accent); text-decoration: none; }
.path strong { font: 700 1.1rem/1.3 var(--serif); }
.path-meta { font: 600 .74rem/1.4 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--faint); }
.path-sum { color: var(--muted); font-size: .92rem; }

/* learning paths (/pl/sciezki/) */
.path-list { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 12px; max-width: 860px; }
.path-list a { display: flex; flex-direction: column; gap: 4px; padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); color: var(--ink); }
.path-list a:hover { border-color: var(--accent); text-decoration: none; }
.path-list strong { font: 700 1.2rem/1.3 var(--serif); }
.steps { list-style: none; counter-reset: s; padding: 0; margin: 20px 0; max-width: 860px; display: grid; gap: 2px; }
.step { counter-increment: s; display: grid; grid-template-columns: 2.6em 1fr auto; column-gap: 8px; padding: 12px; border-radius: 10px; }
.step::before { content: counter(s, decimal-leading-zero); grid-row: span 2; font: 600 .85rem/1.6 var(--mono); color: var(--faint); }
.step > a { font: 700 1.08rem/1.35 var(--serif); color: var(--ink); }
.step-min { font: .8rem/1.6 var(--mono); color: var(--faint); white-space: nowrap; }
.step p { grid-column: 2 / -1; margin: 2px 0 0; color: var(--muted); font-size: .92rem; }
.step.is-read > a { color: var(--muted); }
.path-step { margin: 14px 0 0; padding: 10px 14px; border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 10px; background: var(--paper); font: .9rem/1.5 var(--sans); }
.path-step p { margin: 0; }
.path-step-links { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 4px !important; }
.path-step-links .next { margin-left: auto; }
.path-step-more { color: var(--muted); font-size: .85rem; margin-top: 4px !important; }
.path-step + .path-step { margin-top: 8px; }
.blog-mentions { margin: 14px 0 0; font: .9rem/1.5 var(--sans); color: var(--muted); }

/* accounts: buttons, „przeczytane” pill, /pl/konto/ (account.js, account-page.js) */
:root { --ok: #137a3a; --ok-soft: #e7f6ec; --danger: #b42318; --danger-soft: #fdecea; --ico-check: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cmask id='m'%3E%3Crect width='24' height='24' fill='%23fff'/%3E%3Cpath d='m7.5 12.4 3 3 6-6.2' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/mask%3E%3Ccircle cx='12' cy='12' r='11' mask='url(%23m)'/%3E%3C/svg%3E"); --ico-ring: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Ccircle cx='12' cy='12' r='9.6' fill='none' stroke='%23000' stroke-width='2.2'/%3E%3C/svg%3E"); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --ok: #4ade80; --ok-soft: #12291b; --danger: #f87171; --danger-soft: #2f1416; } }
:root[data-theme="dark"] { --ok: #4ade80; --ok-soft: #12291b; --danger: #f87171; --danger-soft: #2f1416; }
.btn, .read-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: 600 .92rem/1.25 var(--sans); padding: 10px 18px; border-radius: 20px; border: 1px solid var(--line-strong); background: var(--paper); color: var(--ink); cursor: pointer; text-decoration: none; transition: background-color .15s ease, border-color .15s ease, color .15s ease, transform .1s ease, box-shadow .15s ease; }
.btn:hover, .read-toggle:hover { border-color: var(--accent); text-decoration: none; }
.btn:active, .read-toggle:active, .btn-text:active { transform: scale(.97); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--bg); box-shadow: 0 1px 2px rgba(28,29,33,.08); }
.btn-primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); color: var(--bg); }
.btn-danger-solid { background: var(--danger); border-color: var(--danger); color: var(--bg); }
.btn-danger-solid:hover { border-color: var(--danger); filter: brightness(1.08); }
.btn-text { font: 600 .9rem/1.25 var(--sans); background: none; border: 0; padding: 10px 12px; border-radius: 999px; cursor: pointer; color: var(--muted); transition: background-color .15s ease, color .15s ease, transform .1s ease; }
.btn-text.btn-danger { color: var(--danger); }
.btn-text.btn-danger:hover { background: var(--danger-soft); }
.read-toggle::before, .path-continue.is-done::before, .step.is-read::before { content: ""; width: 1.15em; height: 1.15em; flex: none; background: currentColor; -webkit-mask: var(--ico-ring) center / contain no-repeat; mask: var(--ico-ring) center / contain no-repeat; }
.read-toggle.is-read { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); }
.read-toggle.is-read::before, .path-continue.is-done::before, .step.is-read::before { -webkit-mask-image: var(--ico-check); mask-image: var(--ico-check); }
.read-mark { margin: 2em 0 0; }
.path-continue { margin: 18px 0 0; }
.path-continue .btn { max-width: 100%; text-align: left; }
.path-continue.is-done { display: inline-flex; align-items: center; gap: 8px; font: 600 .92rem/1.25 var(--sans); color: var(--ok); background: var(--ok-soft); padding: 8px 14px; border-radius: 999px; }
.step.is-read::before { color: var(--accent); margin-top: .2em; }

/* /pl/konto/ */
.konto { max-width: 920px; padding-top: 12px; }
.konto-head h1 { font-size: clamp(1.9rem, 4vw, 2.5rem); margin: .3em 0 .25em; }
.konto-head .lead { margin: 0; max-width: 34em; }
.konto-meta { margin: 0; font: .92rem/1.5 var(--sans); color: var(--muted); }
.konto-anon { margin-top: 26px; }
.konto-login { min-height: 44px; }
.konto-soon { margin: 0; font: 600 .95rem/1.5 var(--sans); color: var(--muted); }
.konto-fine { margin: 22px 0 0; font-size: .86rem; color: var(--faint); }
.konto-fine a { color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }
.konto-h2 { font: 600 .78rem/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); margin: 34px 0 12px; }
.konto-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.konto-card { display: flex; flex-direction: column; gap: 10px; padding: 18px 18px 16px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); min-width: 0; }
.konto-card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.konto-card-title { font: 700 1.12rem/1.3 var(--serif); color: var(--ink); }
.konto-chip { flex: none; font: 600 .72rem/1 var(--sans); color: var(--accent-ink); background: var(--accent-soft); padding: 5px 9px; border-radius: 999px; white-space: nowrap; }
.konto-bar { height: 8px; border-radius: 999px; background: var(--line); overflow: hidden; }
.konto-fill { display: block; height: 100%; width: var(--p, 0%); border-radius: inherit; background: var(--accent); animation: konto-grow .8s cubic-bezier(.2,.7,.2,1) both; }
.is-done .konto-fill { background: var(--ok); }
@keyframes konto-grow { from { width: 0; } }
.konto-count { margin: 0; font: 600 .86rem/1.4 var(--sans); color: var(--muted); font-variant-numeric: tabular-nums; }
.konto-next { align-self: flex-start; max-width: 100%; text-align: left; margin-top: auto; }
.konto-done { align-self: flex-start; margin-top: auto; font: 600 .92rem/1.25 var(--sans); color: var(--ok); background: var(--ok-soft); padding: 10px 16px; border-radius: 999px; }
.konto-skel { box-shadow: none; }
.skel { display: block; border-radius: 8px; background: linear-gradient(90deg, var(--line) 0%, var(--code) 50%, var(--line) 100%) 0 0 / 200% 100%; animation: skel 1.4s ease-in-out infinite; }
.skel-t { height: 20px; width: 62%; } .skel-bar { height: 8px; border-radius: 999px; } .skel-s { height: 14px; width: 30%; } .skel-b { height: 38px; width: 55%; border-radius: 999px; margin-top: 4px; }
@keyframes skel { to { background-position: -200% 0; } }
.konto-error { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 14px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); color: var(--muted); }
.konto-error p { margin: 0; }
.konto-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 34px; padding-top: 20px; border-top: 1px solid var(--line); }
.konto-dialog { width: min(420px, calc(100vw - 32px)); padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); color: var(--ink); box-shadow: 0 24px 64px rgba(0,0,0,.25); }
.konto-dialog::backdrop { background: rgba(17,18,20,.45); backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px); }
.konto-dialog[open] { animation: konto-pop .18s ease-out; }
@keyframes konto-pop { from { opacity: 0; transform: translateY(8px) scale(.98); } }
.konto-dialog h2 { font: 700 1.2rem/1.3 var(--sans); margin: 0 0 6px; }
.konto-dialog p { margin: 0; color: var(--muted); font-size: .95rem; }
.konto-dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 22px; flex-wrap: wrap; }
.konto-toast { position: fixed; left: 50%; bottom: 24px; z-index: 40; transform: translateX(-50%); max-width: calc(100vw - 32px); margin: 0; padding: 10px 18px; border-radius: 999px; background: var(--ink); color: var(--bg); font: 600 .9rem/1.4 var(--sans); box-shadow: var(--shadow); animation: konto-toast .2s ease-out; }
@keyframes konto-toast { from { opacity: 0; transform: translate(-50%, 8px); } }
.konto-toast:empty { display: none; }
@media (max-width: 720px) { .konto-grid { grid-template-columns: minmax(0, 1fr); } }
@media (prefers-reduced-motion: reduce) { .konto-fill, .skel, .konto-dialog[open], .konto-toast { animation: none; } .btn:active, .read-toggle:active, .btn-text:active { transform: none; } }

/* calculators (/pl/kalkulatory/) */
.calc { margin: 22px 0; padding: 20px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); font: .95rem/1.5 var(--sans); }
.calc .fallback { color: var(--muted); margin: 0; }
.calc-group { border: 0; margin: 0 0 14px; padding: 0; min-width: 0; }
.calc-group legend, .calc .exp-label { font-weight: 700; margin: 0 0 6px; padding: 0; }
.calc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(135px, 1fr)); gap: 10px 14px; align-items: start; }
.calc-field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.calc-label { font-size: .84rem; line-height: 1.25; font-weight: 600; color: var(--muted); min-height: 2.5em; display: flex; align-items: flex-end; }
.calc-stack-row .calc-label, .calc-group > .calc-field .calc-label { min-height: 0; }
.calc-input { font: 600 1rem/1.3 var(--mono); font-variant-numeric: tabular-nums; width: 100%; padding: 9px 11px; border: 1px solid var(--field-line); border-radius: 10px; background: var(--bg); color: var(--ink); }
.calc-input[aria-invalid="true"] { border-color: #d63c3c; box-shadow: 0 0 0 2px color-mix(in srgb, #d63c3c 25%, transparent); }
.calc-hint { font-size: .78rem; color: var(--faint); }
.calc-stack-row { grid-template-columns: 6.5em repeat(4, minmax(56px, 1fr)); margin: 6px 0; }
.calc-stack-row[hidden] { display: none; }
.calc-out { margin: 12px 0 4px; }
.calc-table th { text-align: left; font-weight: 600; color: var(--ink); background: transparent; white-space: normal; }
.calc-table td { white-space: normal; }
.calc-table td b { font-variant-numeric: tabular-nums; white-space: nowrap; }
.calc-note { color: var(--muted); font-size: .84rem; }
.calc-verdict { margin-top: 4px; }
.calc-formulas { display: grid; grid-template-columns: max-content 1fr; gap: 8px 16px; font: .95rem/1.5 var(--sans); }
.calc-formulas dt { font-weight: 700; } .calc-formulas dd { margin: 0; overflow-x: auto; }
.calc-link { margin: 10px 0 0; font: .95rem/1.5 var(--sans); color: var(--muted); }
@media (max-width: 640px) {
  .calc { padding: 14px; }
  .calc-formulas { grid-template-columns: 1fr; gap: 2px; } .calc-formulas dd { margin-bottom: 8px; }
  .calc-stack-row { grid-template-columns: repeat(4, minmax(0, 1fr)); } .calc-stack-row > .calc-label { grid-column: 1 / -1; }
}

/* home: first-visit welcome */
.welcome { margin: 2rem 0 2.5rem; padding: 1.5rem 1.5rem 1.25rem; border: 1px solid var(--line); border-radius: 14px; background: var(--paper); }
.welcome h2 { margin-top: 0; }
.welcome-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.25rem; margin-top: 1rem; }
.welcome-grid h3 { margin: 0 0 .4rem; font-size: 1rem; }
.welcome-grid p, .welcome-grid ol { margin: 0; font-size: .95rem; }
.welcome-grid ol { padding-left: 1.2rem; }
/* site-src/atlas-2.css — continuation of atlas.css (loaded right after it, same tokens; split to keep files ≤ 400 lines):
   course, welcome pages, blog, language switcher, topic strip, „Jak to policzono”, course-first home + phone menu, SVG charts, widgets. */
/* ===== course, welcome pages, blog, language switcher (docs/specs/2026-10-10-course-blog.md) ===== */
/* language switcher: <details> in the header, works without JS */
.langs, .acct-menu { position: relative; } :is(.langs, .acct-menu) > summary { list-style: none; cursor: pointer; color: var(--muted); user-select: none; white-space: nowrap; } :is(.langs, .acct-menu) > summary::-webkit-details-marker { display: none; }
:is(.langs, .acct-menu) > summary::after { content: ""; display: inline-block; width: 6px; height: 6px; margin: 0 0 3px 6px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg); }
:is(.langs, .acct-menu)[open] > summary, :is(.langs, .acct-menu) > summary:hover { color: var(--ink); border-color: var(--accent); }
.langs-list, .acct-list { position: absolute; right: 0; top: calc(100% + 8px); z-index: 30; min-width: 150px; margin: 0; padding: 6px; list-style: none; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); }
.acct-sum::before { content: ""; display: none; width: 18px; height: 18px; vertical-align: -4px; background: currentColor; -webkit-mask: var(--acct-icon) center / contain no-repeat; mask: var(--acct-icon) center / contain no-repeat; --acct-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='8' r='4'/%3E%3Cpath d='M4 21c0-4.4 3.6-7 8-7s8 2.6 8 7'/%3E%3C/svg%3E"); }
@media (max-width: 400px) { .acct-sum::before { display: inline-block; } .acct-txt { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; } }
.acct-list button { width: 100%; border: 0; background: none; font: inherit; text-align: left; cursor: pointer; } .acct-list :is(a, button):hover { background: var(--accent-soft); text-decoration: none; }
.langs-list a, .langs-list span, .acct-list a, .acct-list button { display: block; padding: 8px 12px; border-radius: 8px; color: var(--ink); white-space: nowrap; } .langs-list a:hover { background: var(--accent-soft); text-decoration: none; }
.langs-list [aria-current] { color: var(--accent-ink); font-weight: 600; } .hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 0; } .hero-actions .btn { max-width: 100%; } 
/* course hub: numbered lesson cards (✓ from /course.js) */
/* NN hub: closed module test „Pomiń, jeśli umiesz” (site-src/course/nn-skip.js, T73) */
.skip-box { margin: 14px 0 6px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 12px; }
.skip-box summary { cursor: pointer; color: var(--accent-ink); font: 600 .95rem/1.4 var(--sans); }
.lesson-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: 12px; }
.lesson-card { display: flex; gap: 14px; height: 100%; padding: 16px 18px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); color: var(--ink); transition: border-color .15s ease, box-shadow .15s ease; }
.lesson-card:hover { text-decoration: none; border-color: var(--accent); box-shadow: var(--shadow); }
.lc-n { flex: none; display: inline-grid; place-items: center; width: 2.2em; height: 2.2em; border-radius: 50%; background: var(--accent-soft); color: var(--accent-ink); font: 700 .9rem/1 var(--sans); font-variant-numeric: tabular-nums; }
.lc-main { display: flex; flex-direction: column; gap: 4px; min-width: 0; } .lc-main strong { font: 700 1.06rem/1.3 var(--serif); } .lc-sum { color: var(--muted); font-size: .9rem; line-height: 1.45; }
.lc-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 2px; font: 600 .8rem/1.4 var(--sans); color: var(--faint); } .lc-done { color: var(--ok); }
.lesson-card.is-done { border-color: color-mix(in srgb, var(--ok) 45%, var(--line)); } .lesson-card.is-done .lc-n { background: var(--ok-soft); color: var(--ok); } 
.lesson-card.is-soon { border-style: dashed; color: var(--muted); } .lesson-card.is-soon:hover { transform: none; box-shadow: none; border-color: var(--line); } /* catalog: a course that is not out yet (T43) */
/* course block on / , /en/ and the welcome pages */
.course-block { margin: 2rem 0 2.5rem; padding: 1.4rem 1.5rem; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(135deg, var(--accent-soft), var(--paper) 60%); } .course-block .kicker { margin-top: 0; }
.course-block h2 { margin: .3em 0 .4em; } .course-block h2 a { color: var(--ink); } .course-block > p { max-width: 46em; }
.course-mini { list-style: none; margin: 14px 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); gap: 6px 18px; font: .95rem/1.35 var(--sans); }
.course-mini a { display: flex; align-items: center; gap: 10px; padding: 6px 0; color: var(--ink); } .course-mini .lc-n { width: 1.9em; height: 1.9em; font-size: .78rem; }
.lang-list { list-style: none; margin: 12px 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 220px), 1fr)); gap: 10px; }
.lang-list a { display: flex; flex-direction: column; gap: 2px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); color: var(--ink); } .lang-list a:hover { border-color: var(--accent); text-decoration: none; }
.lang-list a[aria-current] { border-color: var(--accent); } .lang-list span { color: var(--muted); font-size: .88rem; } .more-list { padding-left: 1.2rem; } 
/* lesson page: lab, quiz, takeaways, Atlas links */
.lesson-body { font-size: 1.06rem; } .lab { margin: 24px 0; padding: 18px 20px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); font: .95rem/1.5 var(--sans); overflow-x: auto; }
.lab-label { margin: 0 0 8px; font: 700 .72rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--accent-ink); } .lab-fallback { margin: 0; color: var(--muted); } .lab.is-live > .lab-fallback { display: none; }
.project-field { display: grid; gap: 6px; margin: 14px 0 8px; font: 600 .9rem/1.4 var(--sans); } .project-field textarea, .project-field input { width: 100%; box-sizing: border-box; padding: 10px 12px; border: 1px solid var(--field-line); border-radius: 10px; background: var(--paper); color: var(--ink); font: 400 1rem/1.45 var(--sans); } .project-field :is(textarea, input):focus { border-color: var(--accent); } .project-field :is(textarea, input):focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 10px; } .project-models { border: 0; margin: 0 0 8px; padding: 0; } .project-models legend { font: 600 .9rem/1.4 var(--sans); margin-bottom: 4px; } .project-sub { margin: 12px 0; padding: 12px 14px; border: 1px solid var(--line); border-left: 4px solid var(--line-strong); border-radius: 10px; } .project-sub.is-pass { border-left-color: var(--accent); } .project-sub p { margin: 4px 0; } .project-verdict { font-weight: 600; } .project-card-img { display: block; width: 100%; max-width: 600px; height: auto; margin: 12px 0; border: 1px solid var(--line); border-radius: 12px; }
.quiz { margin-top: 2.4em; } .quiz .q { margin: 0 0 16px; padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); min-width: 0; transition: border-color .15s ease; }
.quiz legend { padding: 0 6px; margin-left: -6px; font: 700 1.04rem/1.4 var(--serif); color: var(--ink); } .q-n { color: var(--accent-ink); }
.opt { display: flex; align-items: flex-start; gap: 10px; margin: 6px 0; padding: 9px 12px; border: 1px solid var(--line); border-radius: 10px; font: .97rem/1.4 var(--sans); cursor: pointer; transition: border-color .15s ease, background-color .15s ease; }
.opt:hover { border-color: var(--accent); } .opt input { flex: none; margin: 3px 0 0; accent-color: var(--accent); } .opt:has(input:focus-visible) { outline: 2px solid var(--accent); outline-offset: 2px; }
.q.is-right { border-color: var(--ok); } .q.is-wrong { border-color: var(--danger); } .opt.is-picked { background: var(--danger-soft); border-color: var(--danger); } .opt.is-answer { background: var(--ok-soft); border-color: var(--ok); }
.quiz-live { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; } .q legend:focus { outline: none; } .q legend:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.q-verdict { margin: 4px 0 8px; font: 700 .95rem/1.3 var(--sans); } .q.is-right .q-verdict { color: var(--ok); } .q.is-wrong .q-verdict { color: var(--danger); } .q-ans { margin-top: 8px; font: .93rem/1.5 var(--sans); color: var(--muted); }
.q-ans summary { cursor: pointer; color: var(--accent-ink); font-weight: 600; } .q-ans p { margin: 8px 0 0; }
.quiz-done { margin: 4px 0 0; padding: 10px 16px; border-radius: 999px; background: var(--ok-soft); color: var(--ok); font: 600 .95rem/1.4 var(--sans); display: inline-block; } .quiz-done[hidden], .q-verdict[hidden] { display: none; }
/* „Predict, then check” (T03): question + confidence above the lab, lab locked until answered; a confident miss is a surprise (accent), never an error (red) */
.predict .pq, .predict .pc { margin: 0 0 12px; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); min-width: 0; } .predict .pc { padding-top: 8px; } .predict legend { padding: 0 6px; margin-left: -6px; font: 700 1.02rem/1.4 var(--serif); color: var(--ink); } .predict .pc legend { font: 600 .9rem/1.3 var(--sans); color: var(--muted); } .p-tag { display: block; margin-bottom: 2px; font: 700 .72rem/1.2 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--accent-ink); }
.predict .opt.is-picked, .predict .opt.is-picked span { text-decoration: none; } .predict .opt.is-picked { background: var(--accent-soft); border-color: var(--accent); } .predict .opt input:disabled + span { opacity: .85; } .p-lock { margin: 0 0 10px; font: 600 .92rem/1.4 var(--sans); color: var(--accent-ink); } .predict .lab.is-locked { opacity: .45; pointer-events: none; user-select: none; filter: blur(3px); } .predict .lab.is-locked .exp-chart { filter: grayscale(1); }
.p-compare { margin: -8px 0 20px; } .p-msg { margin: 10px 0 0; padding: 12px 16px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--paper); font: .97rem/1.5 var(--sans); } .p-msg.is-right { background: var(--ok-soft); border-color: var(--ok); } .p-msg.is-surprise { background: var(--accent-soft); border-color: var(--accent); } .p-msg:empty { display: none; } .p-msg:focus { outline: 2px solid var(--accent); outline-offset: 2px; } .p-lock:focus { outline: none; } .p-check[aria-disabled="true"] { opacity: .6; cursor: default; } .p-commit { margin: 0 0 12px; } .p-change { display: block; min-height: 40px; margin: 6px 0 0; padding: 8px 0; border: 0; background: none; color: var(--accent-ink); font: 600 .92rem/1.3 var(--sans); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; } .p-change:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; } .p-commit[aria-disabled="true"] { opacity: .5; cursor: not-allowed; } .p-need { margin: -6px 0 12px; font: .88rem/1.4 var(--sans); color: var(--muted); } .ai-v:empty { margin: 0; } .predict .q-ans { margin: 0 0 18px; }
.takeaways ul { padding-left: 1.2rem; } .takeaways li { margin: 6px 0; } .takeaways { margin-top: 2em; padding: 4px 22px 14px; border-left: 4px solid var(--accent); background: var(--accent-soft); border-radius: 0 12px 12px 0; }
.takeaways h2 { margin-top: .8em; } .deeper-list { padding-left: 1.2rem; } .deeper-list li { margin: 4px 0; }
.lang-tag { font: 700 .66rem/1 var(--sans); letter-spacing: .05em; color: var(--faint); border: 1px solid var(--line-strong); border-radius: 999px; padding: 2px 6px; vertical-align: middle; } 
/* blog */
.post-card .post-meta { font: 600 .76rem/1.4 var(--sans); letter-spacing: .04em; text-transform: uppercase; color: var(--faint); } .post-list { margin-top: 18px; } .blog-cats { margin-top: 18px; }
.chip.is-current { border-color: var(--accent); color: var(--accent-ink); font-weight: 600; } .post-body { font-size: 1.06rem; } .post-body code, .post-body a { overflow-wrap: anywhere; } .solution details { padding: 12px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); }
.solution summary { cursor: pointer; color: var(--accent-ink); font: 600 .95rem/1.4 var(--sans); } .tags { font: .88rem/2 var(--sans); color: var(--muted); } .tag { display: inline-block; padding: 1px 9px; border-radius: 999px; background: var(--code); }
.feed-link { margin-top: 22px; font: .9rem/1.5 var(--sans); }
@media (max-width: 640px) {
  .menu .langs-list { right: -8px; }
  .course-block { padding: 1.1rem 1rem; }
  .lab { padding: 14px; }
  .quiz .q { padding: 12px 12px; }
}
/* topic top strip (pages.js topicStrip): path + course in one slim line under „W skrócie”; full path prev/next sits at the end (pathEnd) */
.path-step[data-place="top"] { margin: 10px 0 0; padding: 6px 0 0; border: 0; border-radius: 0; background: none; font: .84rem/1.6 var(--sans); color: var(--muted); } .path-strip .strip-step { white-space: nowrap; }
.path-strip .prev, .path-strip .next { display: inline-block; min-width: 24px; padding: 0 4px; text-align: center; font-weight: 600; } .path-strip .prev:hover, .path-strip .next:hover { text-decoration: none; background: var(--accent-soft); border-radius: 6px; }
.path-step[data-place="end"] { margin-top: 28px; } .term .answer + h2, .term .path-step[data-place="top"] + h2 { margin-top: 1.3em; } .term code { overflow-wrap: anywhere; }
@media (max-width: 640px) { .term .kicker { margin-top: 16px; } .term .answer { padding: 12px 16px; } .term .answer p:not(.answer-label) { font-size: 1.06rem; line-height: 1.55; } }
/* „Jak to policzono” box (:::policzono in content, site-src/md.js): setup of a worked example, collapsed, quiet */
.calc { margin: 10px 0 18px; padding: 0 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); font: .86rem/1.5 var(--sans); color: var(--muted); max-width: 100%; overflow-wrap: anywhere; }
.calc > summary { cursor: pointer; padding: 8px 0; color: var(--muted); font-weight: 600; list-style-position: inside; } .calc > summary:hover { color: var(--accent-ink); }
.calc[open] { padding-bottom: 6px; } .calc[open] > summary { border-bottom: 1px solid var(--line); margin-bottom: 6px; }
.calc ul, .calc ol { margin: 4px 0; padding-left: 1.1rem; } .calc li { margin: 3px 0; } .calc p { margin: 6px 0; }
.calc code { font: .82rem/1.4 var(--mono); background: var(--code); padding: 0 3px; border-radius: 4px; overflow-wrap: anywhere; }
/* course-first home + phone menu (hubs.js homeCourse/sec-links/home-list, hubs-data.js term-links, layout.js phoneMenu „navx”) */
.navx > summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: center; width: 38px; height: 34px; border: 1px solid var(--line-strong); border-radius: 10px; color: var(--ink); } .navx > summary::-webkit-details-marker { display: none; } .navx-ico, .navx-ico::before, .navx-ico::after { display: block; width: 16px; height: 2px; border-radius: 2px; background: currentColor; position: relative; transition: transform .15s; } .navx-ico::before, .navx-ico::after { content: ""; position: absolute; left: 0; } .navx-ico::before { top: -5px; } .navx-ico::after { top: 5px; } .navx[open] .navx-ico { background: transparent; } .navx[open] .navx-ico::before { top: 0; transform: rotate(45deg); } .navx[open] .navx-ico::after { top: 0; transform: rotate(-45deg); } .navx[open] > summary { border-color: var(--accent); }  .home-hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); } .home-hero + .course-block { margin: 1.4rem 0 .6rem; } .home-hero + .course-block h2 { font-size: 1.3rem; } .home-more { margin: 10px 0 0; font: 600 .92rem/1.4 var(--sans); } .sec-links { list-style: none; margin: 12px 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 150px), 1fr)); gap: 6px; } .sec-link { display: flex; align-items: baseline; gap: 6px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); color: var(--ink); font-size: .92rem; } .sec-link:hover { border-color: var(--hue, var(--accent)); text-decoration: none; } .sec-link .sec-count { margin: 0 0 0 auto; padding: 0; } .home-list { list-style: none; margin: 10px 0 0; padding: 0; } .home-list li { padding: 7px 0; border-bottom: 1px solid var(--line); } .home-list a { font-weight: 600; color: var(--ink); } .home-list .muted { font-size: .84rem; white-space: nowrap; } .term-links { columns: 3 200px; column-gap: 24px; list-style: none; padding: 0; } .term-links li { padding: 3px 0; break-inside: avoid; } .az-all { margin-top: 2.6em; } .az-all > summary { list-style: none; cursor: pointer; } .az-all > summary::-webkit-details-marker { display: none; } .az-all > summary h2 { display: inline; margin: 0; } .az-all > summary::after { content: " ▾"; color: var(--faint); } .az-all[open] > summary::after { content: " ▴"; } .az-all > .az { margin-top: 16px; } .menu .navx-panel .navx-support { color: var(--accent-ink); font-weight: 600; } .menu .support-txt { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; } /* T93: the bar shows the cup only at every width (its words would push the de/es/fr/pt bar past 1180 px); the ☰ panel has the full link */ @media (max-width: 640px) { .home-hero + .course-block { padding: 1rem; } .home-hero { padding-top: 8px; } }
/* SVG charts (widgets/lib/plot.js, plot-scrub.js): palette tokens, axes, scrub layer, readout row; course lab layout on phones */ :root { --plot-c0: #2952e3; --plot-c1: #e4572e; --plot-c2: #14998e; --plot-c3: #a259d9; --plot-c4: #b07b0e; --plot-c5: #6b7280; --plot-c6: #d63384; --plot-c7: #0a8fca; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --plot-c0: #7d9bff; --plot-c1: #f0875e; --plot-c2: #3cc9bb; --plot-c3: #c08af0; --plot-c4: #f2c255; --plot-c5: #9ca3af; --plot-c6: #f06aa8; --plot-c7: #38bdf8; } } :root[data-theme="dark"] { --plot-c0: #7d9bff; --plot-c1: #f0875e; --plot-c2: #3cc9bb; --plot-c3: #c08af0; --plot-c4: #f2c255; --plot-c5: #9ca3af; --plot-c6: #f06aa8; --plot-c7: #38bdf8; }
.exp-chart.plot-svg { min-width: 0; width: 100%; height: auto; color: var(--ink); overflow: visible; } .plot-svg .plot-tick { fill: var(--faint); font: 11px var(--sans); font-variant-numeric: tabular-nums; } .plot-svg .plot-label { fill: var(--muted); font: 600 12px var(--sans); } .plot-svg .plot-text { font-family: var(--sans); font-variant-numeric: tabular-nums; paint-order: stroke; stroke: var(--bg); stroke-width: 3px; stroke-linejoin: round; } .plot-svg .plot-text.on-fill { stroke: none; } .plot-svg .plot-grid { stroke: var(--line); stroke-width: 1; fill: none; } .plot-svg .plot-guide { stroke: var(--ink); stroke-width: 1; stroke-dasharray: 3 3; opacity: .5; } .plot-svg .plot-knob { fill: var(--paper); } .plot-svg.plot-scrub { touch-action: pan-y; cursor: crosshair; user-select: none; -webkit-user-select: none; -webkit-tap-highlight-color: transparent; } .plot-readout { display: flex; align-items: baseline; gap: 0 18px; height: 2.2rem; margin: 10px 0 -4px; overflow: hidden; white-space: nowrap; font-variant-numeric: tabular-nums; } .plot-rk { display: inline-flex; align-items: baseline; gap: 6px; color: var(--muted); font-size: .88rem; } .plot-rk i { display: inline-block; width: 10px; height: 10px; border-radius: 50%; align-self: center; } .plot-rk b { display: inline-block; min-width: 3.4em; color: var(--ink); font: 700 1.25rem/1.2 var(--sans); } .plot-rh { min-width: 7.5em; font-weight: 600; color: var(--ink); } .plot-verdict { margin: 4px 0 0; font-size: .92rem; line-height: 1.45; height: calc(2 * 1.45em); overflow: hidden; } .lab .exp-slider { height: 34px; margin: 0; cursor: pointer; } .lab .w-row label { gap: 0; } .lab .exp-choice { min-height: 40px; padding: 9px 16px; } .lab .exp-chart { margin: 10px 0; } .lab .w-stat b { font-size: 1.2rem; }
@media (max-width: 480px) { .plot-readout { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 12px; height: 3.5rem; } .plot-rh { grid-column: 1 / -1; min-width: 0; font-size: .82rem; } .plot-rk { min-width: 0; overflow: hidden; font-size: .8rem; gap: 5px; } .plot-rk b { min-width: 0; font-size: 1.05rem; } .lab .w-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; } .lab .w-stat { padding: 8px 9px; } .lab .w-stat b { font-size: 1.05rem; } .lab .w-stat span { font-size: .74rem; line-height: 1.3; display: block; } .lab .w-legend { font-size: .8rem; gap: 4px 12px; } .lab table.data th, .lab table.data td { white-space: normal; padding: 7px 8px; font-size: .84rem; } }
/* Atlas topic widgets (wave 1 review, sections nadzorowane + ocena): lab-like touch sizes; on phones compact stats (3 per row when there are 3), wrapping tables, smaller legend/hint/verdict text */ .widget .exp-slider { height: 34px; margin: 0; cursor: pointer; } .widget .w-row label { gap: 0; } .widget .exp-choice { min-height: 40px; padding: 9px 16px; } .widget .exp-chart { margin: 10px 0; } .widget .w-stat b { font-size: 1.2rem; } .widget .plot-readout + .exp-scroll .exp-chart, .widget .plot-readout + .exp-chart { margin-top: 6px; } @media (max-width: 480px) { .widget .w-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; } .widget .w-stats:has(> :nth-child(3):last-child) { grid-template-columns: repeat(3, minmax(0, 1fr)); } .widget .w-stat { padding: 8px 9px; } .widget .w-stat b { font-size: 1.05rem; } .widget .w-stat span { display: block; font-size: .74rem; line-height: 1.3; } .widget .w-legend { font-size: .8rem; gap: 4px 12px; } .widget .exp-hint { font-size: .88rem; line-height: 1.45; } .widget .exp-verdict { font-size: .9rem; line-height: 1.45; padding: 10px 12px; } .widget table.data th, .widget table.data td { white-space: normal; padding: 7px 8px; font-size: .84rem; } .widget .exp-choice { padding: 8px 12px; font-size: .88rem; } }
.opt:has(input:disabled) { cursor: default; } .opt.is-picked { opacity: .8; } .opt.is-picked input, .opt.is-picked span { text-decoration: line-through; text-decoration-color: var(--danger); }
/* spaced review (T09): header badge (zero-width, no layout shift) and the /<lang>/<review>/ page */
.menu > a.rv-badge { position: relative; display: block; width: 0; min-height: 0; height: 1em; padding: 0; margin-left: -4px; } /* the menu gap is 4px (ui.css): net width 0 */ .menu a.rv-badge[hidden], .rv-dot[hidden], .menu .navx-panel a.rv-pm[hidden] { display: none; }
.rv-dot { position: absolute; top: -7px; right: -7px; min-width: 1.5em; padding: 1px 5px; border-radius: 999px; background: var(--accent); color: var(--bg); font: 700 .72rem/1.35 var(--sans); text-align: center; } .navx > summary { position: relative; } .navx-panel a.rv-pm { color: var(--accent-ink); font-weight: 600; }
@media (max-width: 640px) { .menu a.rv-badge { display: none; } }
.rv-badge span { position: absolute; left: -4px; top: -1.15em; min-width: 1.5em; padding: 1px 5px; border-radius: 999px; background: var(--accent); color: var(--bg); font: 700 .72rem/1.35 var(--sans); text-align: center; }
.rv-nojs[hidden], .rv-app[hidden] { display: none; } .rv-q { margin: 0 0 16px; padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); min-width: 0; } .rv-q.is-right { border-color: var(--ok); } .rv-q.is-wrong { border-color: var(--danger); }
.rv-q button.opt { display: block; width: 100%; box-sizing: border-box; text-align: left; color: inherit; background: transparent; } .rv-q button.opt:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; } .rv-q button.opt:disabled { cursor: default; }
.rv-n, .rv-from { margin: 0 0 6px; font: .86rem/1.4 var(--sans); color: var(--muted); } .rv-qt { margin: 0 0 10px; font: 700 1.04rem/1.4 var(--serif); color: var(--ink); } .rv-ans { margin: 10px 0 0; font: .93rem/1.5 var(--sans); color: var(--muted); } .rv-end { margin: 8px 0 18px; padding: 12px 16px; border-radius: var(--radius); background: var(--ok-soft); color: var(--ok); font: 600 1rem/1.4 var(--sans); } .rv-back { margin-top: 24px; }

/* Course lab goals (site-src/course/labs/goals.js): a checklist under the lab; a met goal turns accent-coloured and shows the congratulation */
.lab-goals { margin: 14px 0 0; padding: 12px 14px; border: 1px dashed var(--line); border-radius: 10px; } .lab-goals-title { margin: 0 0 6px; font: 700 .72rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--accent-ink); } .lab-goals ul { list-style: none; margin: 0; padding: 0; } .lab-goal { display: block; margin: 6px 0 0; padding: 0 0 0 1.5rem; position: relative; line-height: 1.45; overflow-wrap: anywhere; } .lab-goal-mark { position: absolute; left: 0; top: 0; width: 1.2rem; text-align: center; color: var(--muted); } .lab-goal.is-met .lab-goal-mark { color: var(--accent-ink); font-weight: 700; } .lab-goal.is-met .lab-goal-msg { display: block; margin-top: 2px; font-weight: 600; color: var(--accent-ink); }
.warmup { margin: 0 0 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); } .warmup > details > summary { padding: 10px 14px; cursor: pointer; font: .95rem/1.4 var(--sans); } .warmup summary .muted { margin-left: 4px; } .wu-list { padding: 0 12px 10px; }
.warmup .q.wq { margin: 0 0 10px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); min-width: 0; } .warmup legend, .wq-q { margin: 0 0 6px; padding: 0 4px; font: 600 .97rem/1.4 var(--sans); color: var(--ink); } .wq-from { display: block; margin-bottom: 2px; font: .8rem/1.3 var(--sans); font-weight: 400; color: var(--muted); }
.warmup .opt { margin: 4px 0; padding: 7px 10px; font-size: .93rem; } .wq button.opt { display: block; width: 100%; box-sizing: border-box; text-align: left; color: inherit; background: transparent; } .wq button.opt:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; } .wq button.opt:disabled { cursor: default; } .wq .q-verdict:empty { margin: 0; } .wq-ans { margin: 6px 0 0; font: .92rem/1.45 var(--sans); color: var(--ink); }
.wk { margin: 12px 0 0; font: .92rem/1.45 var(--sans); color: var(--muted); } .wk[hidden] { display: none; }
.layers { margin: 28px 0; } .layer { margin: 10px 0; padding: 0 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); } .layer > summary { cursor: pointer; padding: 12px 0; font: 600 1rem/1.4 var(--sans); color: var(--ink); } .layer > summary:hover { color: var(--accent-ink); } .layer[open] > summary { border-bottom: 1px solid var(--line); margin-bottom: 8px; } .layer-body { padding-bottom: 12px; min-width: 0; }
.layer pre.code { margin: 10px 0; padding: 12px 14px; overflow-x: auto; border-radius: 8px; background: var(--code); font: .84rem/1.5 var(--mono); white-space: pre; } .layer pre.code code { background: none; padding: 0; font: inherit; } .code-out-label { margin: 12px 0 0; font: 600 .82rem/1.4 var(--sans); color: var(--muted); }
.nb-link { margin: 14px 0 4px; font: .9rem/1.5 var(--sans); color: var(--muted); } .nb-link a { font-weight: 600; }
.ai-catch { margin: 28px 0; padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); } .ai-catch h2 { margin-top: 0; } .ai-q { margin: 8px 0 12px; } .ai-a { border: 0; padding: 0; margin: 0; min-width: 0; } .ai-a legend { font: 600 .9rem/1.4 var(--sans); color: var(--muted); margin-bottom: 6px; } .ai-s { display: block; }
/* header menu (T35, site-src/nav-menu.js): bar = Kursy (nav-k) · wide-only items (nav-w) · search · account · language · ☰ at every width; phones keep Kursy, search, ☰ */
.navx-panel { position: absolute; left: 0; right: 0; top: 100%; z-index: 30; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px 20px; max-height: calc(100dvh - var(--top-h, 64px)); overflow-y: auto; padding: 14px max(16px, calc((100% - 1140px) / 2)) 18px; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
.navx-g { display: flex; flex-direction: column; min-width: 0; } .navx-h { margin: 0 0 4px; padding: 0 8px; font: 700 .72rem/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); }
.menu .navx-panel a { padding: 9px 8px; border-radius: 8px; color: var(--ink); font-size: 1rem; line-height: 1.3; } .menu .navx-panel a:hover { background: var(--accent-soft); text-decoration: none; } .navx-panel .navx-support { grid-column: 1 / -1; justify-self: start; }
.navx-langs { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: 2px; margin: 0; padding: 6px 0 0 8px; border-top: 1px solid var(--line); font: 600 .86rem/1 var(--sans); color: var(--muted); } .navx-lt { margin-right: 4px; font-weight: 500; } .menu .navx-langs a, .navx-langs span[aria-current] { padding: 9px 7px; font-size: .86rem; } .navx-langs span[aria-current] { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 3px; }
.rv-dot.rv-in { position: static; display: inline-block; margin-left: 8px; vertical-align: 1px; }
.menu > a.nav-k { color: var(--ink); font-weight: 600; } .brand, .menu > a, .menu .acct-sum { white-space: nowrap; }
@media (max-width: 1000px) { .menu > :is(.nav-w, .rv-badge) { display: none; } } /* T93: from 1001 px the wide items fit with room to spare in all six languages (ui.css compact bar to 1199 px) */
@media (min-width: 1001px) { .navx-btn .rv-dot { display: none; } }
@media (max-width: 640px) { .navx-panel { grid-template-columns: 1fr 1fr; gap: 12px 10px; padding: 10px 12px 16px; } .menu > :is(.nav-w, .acct, .acct-menu, .langs, .support) { display: none; } }
/* „what next” (tasks/T38, course/next.js): the „n to review” link beside the start button, the finished-lesson panel, the last lesson's list */
.hero-actions .cn-due { align-self: center; font: 600 .95rem/1.4 var(--sans); } .lesson-next { margin: 12px 0 0; } .lesson-next .ln-review { margin: 10px 0 0; } .lesson-next .hero-actions { margin-top: 10px; } .what-next { margin: 28px 0; padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); } .what-next h2 { margin-top: 0; } .what-next .home-list a { padding: 8px 0 2px; } .what-next .home-list .muted { display: block; white-space: normal; padding-bottom: 6px; }
/* home v4 (T39, home.js): five sections, ≤ 4 phone screens; steps as numbered circles, one course card, compact lookup */
.home-how .muted { margin: 4px 0 10px; } .how-steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 10px 18px; }
.how-steps li { counter-increment: step; display: grid; grid-template-columns: 2.1em 1fr; column-gap: 10px; align-items: start; font: .95rem/1.4 var(--sans); }
.how-steps li::before { content: counter(step); grid-row: span 2; display: flex; align-items: center; justify-content: center; width: 2.1em; height: 2.1em; border-radius: 50%; background: var(--accent-soft); color: var(--accent-ink); font-weight: 700; }
.how-steps strong { color: var(--ink); } .how-steps span { color: var(--muted); }
.home-facts { margin: 12px 0 0; font: 600 .9rem/1.5 var(--sans); color: var(--muted); }
.home-course { margin: 6px 0 0; max-width: 820px; } .home-course h3 { margin: 0 0 4px; font-size: 1.12rem; } .home-course p { margin: 6px 0 0; } .home-course .home-more { margin-top: 8px; }
.cc-progress { display: flex; align-items: center; gap: 10px; font: 600 .88rem/1.4 var(--sans); color: var(--muted); } .cc-progress progress { flex: 0 1 180px; height: 8px; accent-color: var(--accent); }
.home-lookup h3 { margin: 16px 0 8px; font: 700 .78rem/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); } .home-lookup .search { margin-top: 6px; }
.terms-all { margin: 10px 0 0; } .terms-all > summary { cursor: pointer; padding: 8px 0; font: 600 .95rem/1.4 var(--sans); color: var(--accent-ink); } .terms-all[open] > summary { margin-bottom: 6px; }
.home-where .home-list .muted { display: block; white-space: normal; margin-top: 2px; } .home-where .home-list a { padding: 4px 0 0; }
/* T37: course call-to-action at the end of every topic (site-src/topic-cta.js); static, no script → no layout shift */
.entry-cta { margin: 28px 0 8px; padding: 14px 18px; background: var(--accent-soft); border-left: 4px solid var(--accent); border-radius: 12px; font: .95rem/1.5 var(--sans); }
.entry-cta p { margin: 0; } .entry-cta p + p { margin-top: 6px; } .entry-cta-q { font-weight: 650; }
.entry-cta-go { display: inline-flex; align-items: center; min-height: 44px; padding: 0 14px; margin-right: 2px; border-radius: 10px; background: var(--accent); color: var(--on-accent, #fff); font-weight: 600; text-decoration: none; }
.entry-cta-go:hover, .entry-cta-go:focus-visible { background: var(--accent-ink); color: var(--on-accent, #fff); }
.entry-cta-more, .entry-cta-langs { color: var(--muted); font-size: .88rem; }
.entry-cta-langs a { display: inline-block; padding: 6px 0; }
.lesson-gap { margin: -4px 0 14px; font: .9rem/1.45 var(--sans); color: var(--muted); } /* T88: „4.1–4.4 are still being written” under a lesson title */
/* T70: a question that wraps (phones) no longer straddles the card border: the legend floats inside the card, the options clear it */ .quiz .q > legend, .predict .pq > legend, .warmup .q.wq > legend { float: left; width: 100%; box-sizing: border-box; margin: 0 0 8px; padding: 0; } .quiz .q > :not(legend), .predict .pq > :not(legend), .warmup .q.wq > :not(legend) { clear: both; }
/* site-src/ui.css — v3 look on top of atlas.css (joined into one hashed file by assets.js): one modern sans (Inter, self-hosted),
   calmer colours, header search on every page, 44 px touch targets on phones, a sticky „on this page” strip, styled sliders. */
@font-face { font-family: "Inter"; font-style: normal; font-weight: 100 900; font-display: swap; src: url(/fonts/inter-latin.woff2) format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 100 900; font-display: swap; src: url(/fonts/inter-latin-ext.woff2) format("woff2"); unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
:root {
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Roboto, Arial, sans-serif; --serif: var(--sans);
  --bg: #f7f7f9; --paper: #ffffff; --ink: #16171d; --muted: #555863; --faint: #696c78; --line: #e5e6eb; --line-strong: #d2d4dc; --field-line: #82858f;
  --accent: #3355f0; --accent-ink: #2341c9; --accent-soft: #ebefff; --code: #f0f1f5;
  --shadow: 0 1px 2px rgba(22,23,29,.05), 0 6px 20px rgba(22,23,29,.06); --shadow-lg: 0 2px 6px rgba(22,23,29,.06), 0 18px 48px rgba(22,23,29,.14);
  --on-accent: #fff; --radius: 16px; --top-h: 60px; --ease: cubic-bezier(.2,.7,.2,1);
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) {
  --bg: #0f1013; --paper: #17181c; --ink: #ececf0; --muted: #a4a6b0; --faint: #8a8d98; --line: #26272d; --line-strong: #363841; --field-line: #6b6e7a;
  --accent: #7f9bff; --accent-ink: #a8bbff; --accent-soft: #1b2240; --code: #20222a; --shadow-lg: 0 18px 48px rgba(0,0,0,.5); --on-accent: #0b0c10;
} }
:root[data-theme="dark"] { --bg: #0f1013; --paper: #17181c; --ink: #ececf0; --muted: #a4a6b0; --faint: #8a8d98; --line: #26272d; --line-strong: #363841; --field-line: #6b6e7a; --accent: #7f9bff; --accent-ink: #a8bbff; --accent-soft: #1b2240; --code: #20222a; --shadow-lg: 0 18px 48px rgba(0,0,0,.5); --on-accent: #0b0c10; }
html { scroll-padding-top: calc(var(--top-h) + 16px); }
body { font: 16.5px/1.65 var(--sans); font-feature-settings: "cv11", "ss01"; }
h1, h2, h3 { font-weight: 700; letter-spacing: -.022em; }
h1 { letter-spacing: -.03em; line-height: 1.12; }
h2 { font-size: 1.45rem; } h3 { font-size: 1.1rem; }
.lead { font: 400 1.14rem/1.6 var(--sans); }
.kicker { letter-spacing: .06em; font-size: .74rem; }
::selection { background: color-mix(in srgb, var(--accent) 22%, transparent); }

/* header: taller tap rows, a search button on every page (nav.js opens the dialog; without JS it is a link to the home search) */
.top { background: color-mix(in srgb, var(--bg) 82%, transparent); }
.bar { height: var(--top-h); padding-block: 0; }
.brand { font: 750 1.08rem/1 var(--sans); letter-spacing: -.02em; }
.menu { gap: 4px; }
.menu > a, .menu .acct-sum, .menu .lang { display: inline-flex; align-items: center; min-height: 40px; padding: 0 12px; border-radius: 10px; font-weight: 500; transition: background-color .15s, color .15s; }
.menu > a:hover, .menu .acct-sum:hover { background: color-mix(in srgb, var(--ink) 6%, transparent); }
.menu .lang { min-height: 36px; margin-left: 4px; border-radius: 10px; }
.menu > .qbtn { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; min-width: 40px; padding: 0 10px 0 12px; margin-right: 6px; border: 1px solid var(--line-strong); border-radius: 12px; background: var(--paper); color: var(--muted); font: 500 .9rem/1 var(--sans); cursor: pointer; transition: border-color .15s, box-shadow .15s, color .15s; }
.menu > .qbtn:hover { color: var(--ink); border-color: var(--accent); text-decoration: none; box-shadow: 0 0 0 4px var(--accent-soft); }
.qbtn svg { width: 17px; height: 17px; flex: none; }
.qbtn kbd { font: 600 .72rem/1 var(--sans); color: var(--faint); border: 1px solid var(--line); border-radius: 6px; padding: 4px 6px; margin-left: 14px; }
.crumbs a { display: inline-block; padding: 6px 0; }

/* search dialog (qsearch.js): a command palette — type, ↑ ↓, Enter */
.qdlg { width: min(640px, calc(100vw - 24px)); max-height: min(70vh, 560px); margin: 10vh auto auto; padding: 0; border: 1px solid var(--line); border-radius: 18px; background: var(--paper); color: var(--ink); box-shadow: var(--shadow-lg); overflow: hidden; }
.qdlg[open] { display: flex; flex-direction: column; animation: q-pop .16s var(--ease); }
.qdlg::backdrop { background: rgba(15,16,19,.42); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }
@keyframes q-pop { from { opacity: 0; transform: translateY(-6px) scale(.985); } }
.qdlg-head { display: flex; align-items: center; gap: 10px; padding: 6px 8px 6px 16px; border-bottom: 1px solid var(--line); }
.qdlg-head svg { width: 20px; height: 20px; color: var(--faint); flex: none; }
.qdlg input { flex: 1; min-width: 0; height: 52px; border: 0; outline: 0; background: none; color: var(--ink); font: 500 1.08rem/1 var(--sans); }
.qdlg input::-webkit-search-cancel-button { display: none; }
.qdlg-x { flex: none; height: 36px; padding: 0 12px; border: 0; border-radius: 10px; background: var(--code); color: var(--muted); font: 600 .8rem/1 var(--sans); cursor: pointer; }
.qdlg-list { list-style: none; margin: 0; padding: 8px; overflow-y: auto; overscroll-behavior: contain; }
.qdlg-list a { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 11px 12px; border-radius: 10px; color: var(--ink); font-weight: 500; }
.qdlg-list a span { flex: none; font-size: .78rem; font-weight: 600; color: var(--faint); }
.qdlg-list a:hover, .qdlg-list a[aria-selected="true"] { background: var(--accent-soft); color: var(--accent-ink); text-decoration: none; }
.qdlg-note { margin: 0; padding: 14px 20px 18px; color: var(--muted); font-size: .92rem; }
@media (max-width: 640px) { .qdlg { margin-top: 8px; max-height: calc(100dvh - 16px); } .menu > a.qbtn { display: inline-flex; padding: 0; justify-content: center; margin-right: 2px; } .qbtn kbd { display: none; } .qbtn-txt { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; } } /* T106: words clipped, not removed — they are the link's only name */
/* T93: from 1001 px (the wide items appear, atlas-2.css) to 1199 px the bar carries Kursy + 4 wide items + search + account + language + ☰ on one line: the search button shrinks to its loupe (the words stay for screen readers) and links get 8px sides, so the bar fits the window in all six languages (test/menu.test.js budget) */
@media (min-width: 1001px) and (max-width: 1199px) { .menu > a, .menu .acct-sum, .menu .lang { padding: 0 8px; } .menu > a.qbtn { padding: 0; justify-content: center; margin-right: 2px; } .qbtn kbd { display: none; } .qbtn-txt { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; } }

/* surfaces: one radius, soft lift on hover, a primary button that looks pressable */
.btn, .read-toggle { min-height: 44px; padding: 10px 20px; border-radius: 12px; font-weight: 600; }
.btn-primary { background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 88%, #fff), var(--accent)); border-color: var(--accent); color: var(--on-accent); box-shadow: 0 1px 2px rgba(22,23,29,.12), 0 4px 14px color-mix(in srgb, var(--accent) 28%, transparent); }
.btn-primary:hover { background: var(--accent-ink); color: var(--on-accent); transform: translateY(-1px); }
.card, .sec-card, .path, .path-list a, .lesson-card, .pager a, .lang-list a, .sec-link, .konto-card { border-radius: var(--radius); transition: transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s; }
.card:hover, .sec-card:hover, .path:hover, .path-list a:hover, .lesson-card:hover, .pager a:hover, .lang-list a:hover, .sec-link:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.card strong, .path strong, .lc-main strong, .sec-card strong, .toc-list strong, .path-list strong, .step > a, .konto-card-title, .quiz legend, .foot-brand strong { font-family: var(--sans); letter-spacing: -.01em; }
.chip { min-height: 38px; display: inline-flex; align-items: center; padding: 6px 14px; }
.course-block { border-radius: 20px; background: radial-gradient(120% 140% at 0% 0%, var(--accent-soft), var(--paper) 62%); box-shadow: var(--shadow); }
.course-mini a { padding: 10px 0; }
.home-list li { padding: 0; } .home-list a { display: inline-block; padding: 11px 0; }
.sec-links { gap: 8px; } .sec-link { padding: 12px 14px; font-weight: 600; align-items: center; }

/* topic page: sans prose, roomier lines, the „W skrócie” box as a card */
.term { font: 1.05rem/1.75 var(--sans); }
.term h2 { padding-top: .2em; }
.answer { border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent); border-left-width: 4px; border-radius: 14px; }
.answer p { font-size: 1.08rem; line-height: 1.65; }
.faq dt { font-size: 1.02rem; } .faq dd { line-height: 1.7; }
.path-strip .prev, .path-strip .next { display: inline-grid; place-items: center; min-width: 40px; min-height: 40px; border-radius: 10px; }
.toc li a { padding: 7px 0 7px 14px; transition: color .15s, border-color .15s, background-color .15s; }
.toc li a[aria-current] { color: var(--accent-ink); border-left-color: var(--accent); font-weight: 600; }

/* phones and tablets: the „on this page” list becomes a sticky strip of chips under the header */
@media (max-width: 1000px) {
  .toc { display: block; position: sticky; top: calc(var(--top-h) + 1px); z-index: 15; margin: 0 -20px; padding: 8px 20px; background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
  .toc-title { display: none; }
  .toc ol { display: flex; gap: 6px; overflow-x: auto; border: 0; scrollbar-width: none; -webkit-mask: linear-gradient(90deg, #000 88%, transparent); mask: linear-gradient(90deg, #000 88%, transparent); }
  .toc ol::-webkit-scrollbar { display: none; }
  .toc li { flex: none; }
  .toc li a { margin: 0; padding: 8px 14px; border: 1px solid var(--line-strong); border-radius: 999px; background: var(--paper); color: var(--ink); font-weight: 500; white-space: nowrap; }
  .toc li a:hover { border-color: var(--accent); }
  .toc li a[aria-current] { background: var(--ink); border-color: var(--ink); color: var(--bg); }
  html:has(.toc) { scroll-padding-top: calc(var(--top-h) + 72px); }
}
@media (max-width: 640px) {
  :root { --top-h: 56px; }
  body { font-size: 16px; }
  .toc { margin: 0 -16px; padding: 8px 16px; }
  .bar { padding-inline: 12px 10px; gap: 8px; }
  .menu { gap: 0; } .menu > a, .menu .acct-sum { min-height: 44px; padding: 0 9px; }
  .menu .lang { margin-left: 2px; padding: 0 8px; }
  .navx > summary { width: 44px; height: 40px; border-radius: 12px; }
  .menu .navx-panel a { padding: 14px 10px; }
  .crumbs { white-space: nowrap; overflow-x: auto; scrollbar-width: none; } .crumbs a { padding: 10px 0; }
  .term { font-size: 1.02rem; line-height: 1.72; }
  .foot-links { gap: 0 18px; } .foot-links a, .foot a { display: inline-block; padding: 8px 0; }
  .az-group li a, .term-links li a { display: block; padding: 8px 0; }
  .home-hero h1 { font-size: 2.05rem; }
}

/* sliders: a real track and thumb instead of the browser default */
input[type="range"] { -webkit-appearance: none; appearance: none; height: 36px; background: transparent; cursor: pointer; --fill: var(--accent); }
input[type="range"]::-webkit-slider-runnable-track { height: 6px; border-radius: 999px; background: var(--line-strong); }
input[type="range"]::-moz-range-track { height: 6px; border-radius: 999px; background: var(--line-strong); }
input[type="range"]::-moz-range-progress { height: 6px; border-radius: 999px; background: var(--fill); }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px; margin-top: -8px; border-radius: 50%; background: var(--paper); border: 2px solid var(--fill); box-shadow: 0 1px 3px rgba(0,0,0,.2); transition: transform .12s; }
input[type="range"]::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--paper); border: 2px solid var(--fill); box-shadow: 0 1px 3px rgba(0,0,0,.2); }
input[type="range"]:active::-webkit-slider-thumb { transform: scale(1.15); }
/* T105 focus: outline inside the slider box (the value label sits flush above it) + thicker accent ring on the thumb; vendor pseudo-elements in separate rules (one unknown selector drops a whole list) */
input[type="range"]:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; border-radius: 10px; }
input[type="range"]:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 2px var(--accent); }
input[type="range"]:focus-visible::-moz-range-thumb { box-shadow: 0 0 0 2px var(--accent); }

/* home: search first, big and friendly */
.search input { height: 56px; padding-left: 50px; border-radius: 16px; font-size: 1.05rem; border-color: var(--field-line); transition: border-color .15s, box-shadow .15s; background-position: 18px 50%; }
.search input:focus { border-color: var(--accent); box-shadow: var(--shadow); } .search input:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 16px; }
.results { border-radius: 16px; padding: 8px; } .results a { padding: 11px 14px; }
.home-hero + .search { margin-top: 18px; }

/* account page: started things first and big, the rest as a quiet list (account-page.js) */
.konto-more { list-style: none; margin: 0; padding: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); overflow: hidden; }
.konto-more li + li { border-top: 1px solid var(--line); }
.konto-more a { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; padding: 10px 16px; color: var(--ink); font-weight: 600; }
.konto-more a:hover { background: var(--accent-soft); text-decoration: none; }
.konto-more span { flex: none; font: 600 .78rem/1 var(--sans); color: var(--faint); }
.konto-rest { grid-column: 1 / -1; } .konto-rest .konto-h2 { margin-top: 8px; }
.konto-empty { margin: 0; padding: 16px 18px; border: 1px dashed var(--line-strong); border-radius: var(--radius); color: var(--muted); }
@media (prefers-reduced-motion: reduce) { .qdlg[open] { animation: none; } .card:hover, .sec-card:hover, .path:hover, .lesson-card:hover, .pager a:hover, .sec-link:hover, .btn-primary:hover { transform: none; } }
/* „Czy to było pomocne?” (vote.js; pulse.js shows it and sends the vote) */
.vote { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 2.2em 0 0; padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); font: 500 .95rem/1.4 var(--sans); }
.vote-q { margin: 0 auto 0 0; font-weight: 650; color: var(--ink); }
.vote-btn { min-height: 40px; padding: 8px 16px; }
.vote-btn[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); }
.vote-btn:disabled { cursor: default; } .vote-btn:disabled:not([aria-pressed="true"]) { opacity: .45; }
.vote-thanks { flex-basis: 100%; margin: 2px 0 0; color: var(--ok); font-weight: 600; }
@media (max-width: 480px) { .vote-q { flex-basis: 100%; } .vote-btn { flex: 1; } }
/* T107 (WCAG 2.5.8): lone targets ≥ 24 px at 375 px with nothing moved — the logo fills more of the fixed bar; padding paid back by an equal negative margin; inline padding moves no line */
.brand { min-height: 44px; } .q-ans summary { padding-block: 2px; margin-block: -2px; } .path-step-links a { padding-block: 2px; margin-block: -2px; } .home-course h3 a { padding-block: 2px; }
/* site-src/daily.css — „Dzienne ML” (/pl/dzienne/, /en/daily/): the puzzle card, option buttons, result grid. */
.daily { margin: 8px 0 28px; }
.daily-card { padding: 20px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.daily-meta { margin: 0 0 10px; font: 600 .85rem/1.4 var(--sans); }
.daily-type { color: var(--accent-ink); }
.daily-q { margin: 0 0 14px; font: 600 1.2rem/1.45 var(--serif); }
.daily-hint { margin: 0 0 10px; font-size: .9rem; }
.daily-opts { margin: 0 0 14px; padding: 0; list-style: none; display: grid; gap: 10px; }
ol.daily-opts { list-style: upper-alpha; padding-left: 1.6em; display: block; }
ol.daily-opts li { margin: 0 0 8px; }
.daily-opt { display: block; width: 100%; min-height: 48px; padding: 12px 16px; text-align: left; font: 500 1rem/1.4 var(--sans); color: var(--ink); background: var(--bg); border: 1px solid var(--line-strong); border-radius: 12px; cursor: pointer; }
.daily-opt:hover:not(:disabled) { border-color: var(--accent); background: var(--accent-soft); }
.daily-opt:disabled { cursor: default; }
.daily-opt.is-wrong { color: var(--muted); text-decoration: line-through; border-style: dashed; background: transparent; }
.daily-opt.is-right { border: 2px solid var(--ok); background: var(--ok-soft); font-weight: 600; }
.daily-opt.is-right::before { content: "✓ "; }
.daily-verdict { min-height: 1.5em; margin: 0 0 8px; font-weight: 600; }
.daily-why { font-size: 1.04rem; }
.daily-h { margin: 18px 0 8px; font: 700 1rem/1.4 var(--sans); }
.daily-grid { display: block; width: 100%; max-width: 26em; padding: 10px 12px; font: 1.05rem/1.6 var(--sans); color: var(--ink); background: var(--bg); border: 1px solid var(--field-line); border-radius: 10px; resize: none; }
.daily-actions { margin: 10px 0; display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.daily-streak { margin: 8px 0 4px; font: 600 .95rem/1.4 var(--sans); }
.daily-answer { margin: 14px 0 6px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 12px; }
.daily-answer summary { cursor: pointer; color: var(--accent-ink); font: 600 .95rem/1.4 var(--sans); }
.daily-stale { margin: 10px 0 0; font-size: .85rem; }
.daily-about ul { padding-left: 1.2em; }
@media (max-width: 640px) { .daily-card { padding: 14px; } .daily-q { font-size: 1.1rem; } }
/* site-src/advent.css — „Adwent ML” (/pl/adwent/, /en/advent/): the doors, the task panel, the share box. */
.adv-doors { margin: 0 0 18px; padding: 0; list-style: none; display: grid; gap: 10px; }
.adv-door { display: flex; gap: 12px; align-items: flex-start; padding: 12px 14px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; }
.adv-btn { display: flex; gap: 12px; align-items: flex-start; width: 100%; margin: -12px -14px; padding: 12px 14px; text-align: left; font: inherit; color: inherit; background: none; border: 0; border-radius: 12px; cursor: pointer; width: calc(100% + 28px); }
.adv-btn:hover { background: var(--accent-soft); }
.adv-n { flex: none; display: grid; place-items: center; width: 2.2rem; height: 2.2rem; font: 700 1rem/1 var(--sans); color: var(--accent-ink); background: var(--accent-soft); border-radius: 50%; }
.adv-body { display: grid; gap: 2px; min-width: 0; }
.adv-t { font: 600 1rem/1.4 var(--sans); }
.adv-d { font-size: .85rem; }
.adv-door.is-locked { background: transparent; border-style: dashed; }
.adv-door.is-locked .adv-n { color: var(--muted); background: var(--code); }
.adv-door.is-locked .adv-t { color: var(--muted); }
.adv-door.is-selected { border: 2px solid var(--accent); }
.adv-door.is-done .adv-n { color: var(--ok); background: var(--ok-soft); }
.adv-door.is-done .adv-n::after { content: "✓"; }
.adv-door.is-done .adv-n { font-size: 0; }
.adv-door.is-done .adv-n::after { font-size: 1.1rem; }
.adv-app { margin: 8px 0 28px; }
.adv-panel { padding: 20px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.adv-title { margin: 0 0 6px; font: 700 1.3rem/1.3 var(--serif); }
.adv-meta { margin: 0 0 12px; }
.adv-h { margin: 16px 0 6px; font: 700 1rem/1.4 var(--sans); }
.adv-setup { padding-left: 1.2em; }
.adv-q { margin: 14px 0; font: 600 1.1rem/1.5 var(--serif); }
.adv-form { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.adv-form label { flex-basis: 100%; font: 600 .9rem/1.4 var(--sans); }
.adv-input { flex: 1 1 9em; min-width: 0; max-width: 14em; min-height: 44px; padding: 8px 12px; font: 1.05rem/1.4 var(--sans); color: var(--ink); background: var(--bg); border: 1px solid var(--field-line); border-radius: 10px; }
.adv-tol { margin: 8px 0 0; font-size: .85rem; }
.adv-verdict { min-height: 1.5em; margin: 8px 0; font-weight: 600; }
.adv-hint-list { padding-left: 1.4em; }
.adv-hint-btn { margin-top: 4px; }
.adv-code { margin: 6px 0 12px; padding: 12px 14px; overflow-x: auto; font: .85rem/1.5 var(--mono); background: var(--code); border-radius: 10px; }
.adv-details { margin: 14px 0 6px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 12px; }
.adv-details summary { cursor: pointer; color: var(--accent-ink); font: 600 .95rem/1.4 var(--sans); }
.adv-foot { margin-top: 14px; }
.adv-progress { margin: 0 0 8px; font: 600 .95rem/1.4 var(--sans); }
.adv-share { display: block; width: 100%; max-width: 26em; padding: 10px 12px; font: 1.05rem/1.6 var(--sans); color: var(--ink); background: var(--bg); border: 1px solid var(--field-line); border-radius: 10px; resize: none; }
.adv-actions { margin: 10px 0; display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.adv-error { color: var(--danger); font-weight: 600; }
.adv-about ul { padding-left: 1.2em; }
@media (max-width: 640px) { .adv-panel { padding: 14px; } .adv-title { font-size: 1.15rem; } }
.adv-panel, .adv-door { overflow-wrap: anywhere; }
/* groups (T17): one table per group, nickname × 12 days; the table scrolls inside its box on a phone, the page never does */
.adv-groups { margin: 8px 0 18px; }
.adv-g { margin: 14px 0; padding: 14px 16px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; }
.adv-g-meta { margin: 0 0 10px; }
.adv-g-code { font: 600 .95rem/1.4 var(--mono); letter-spacing: .08em; }
.adv-g-scroll { overflow-x: auto; }
.adv-g-table { border-collapse: collapse; font: .9rem/1.4 var(--sans); }
.adv-g-table th, .adv-g-table td { padding: 4px 6px; text-align: center; border-bottom: 1px solid var(--line); }
.adv-g-table th[scope="row"] { text-align: left; font-weight: 600; white-space: nowrap; }
.adv-g-on { color: var(--ok); font-weight: 700; }
.adv-g-off { color: var(--muted); }
.adv-g-total { font-weight: 700; }
.adv-g-table tr.is-you { background: var(--accent-soft); }
.adv-g-box { margin: 18px 0 0; }
.adv-g-form .adv-input { max-width: 18em; }
.adv-g-msg { min-height: 1.5em; color: var(--danger); font-weight: 600; }
.adv-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
/* site-src/start.css — „Start tutaj” /pl/start/ (T36, site-src/start-page.js), its link on the PL home and the glossary /pl/slowniczek/ (T84). Joined into the one stylesheet (assets.js). */
.start-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 6px; }
.start-req li { margin: 0 0 10px; }
.start-next { margin: 14px 0 0; font-weight: 600; }
.start-q { min-width: 0; margin: 0 0 16px; padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.start-q legend { font-weight: 600; line-height: 1.45; }
.start-q pre.code { max-width: 100%; margin: 10px 0; padding: 12px 14px; overflow-x: auto; border-radius: 8px; background: var(--code); font: .84rem/1.5 var(--mono); white-space: pre; }
.start-q pre.code code { background: none; padding: 0; font: inherit; }
.start-out { margin: 4px 0 18px; padding: 12px 16px; border-radius: var(--radius); background: var(--accent-soft); font-weight: 600; }
.start-plans { list-style: none; margin: 12px 0 0; padding: 0; }
.start-plan { margin: 0 0 10px; padding: 12px 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); transition: border-color .15s ease, box-shadow .15s ease; }
.start-plan h3 { margin: 0 0 4px; }
.start-plan summary .muted { display: block; font-size: .92rem; }
.start-plan p { margin: 0 0 6px; }
.start-plan ul { margin: 8px 0 0; padding-left: 1.2em; }
.start-plan.is-pick { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
/* T95: secondary parts fold into <details>; summaries are one tappable line (≥ 44 px), the chevron turns when open */
.start-jump { margin: 14px 0 0; } .start-jump .muted { margin: 0 0 4px; font-size: .9rem; } .start-jump .chips { margin: 0; }
.start-page :is(.start-fold, .start-mat, .start-faq, .start-plan details) > summary { list-style: none; cursor: pointer; }
.start-page :is(.start-fold, .start-mat, .start-faq, .start-plan details) > summary::-webkit-details-marker { display: none; }
.start-page :is(.start-fold, .start-mat, .start-faq) > summary::after, .start-plan summary h3::after { content: " ▾"; color: var(--faint); }
.start-page :is(.start-fold, .start-mat, .start-faq)[open] > summary::after, .start-plan details[open] summary h3::after { content: " ▴"; }
.start-fold, .start-mat, .start-faq { margin: 8px 0; padding: 0 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.start-page :is(.start-fold, .start-mat, .start-faq) > summary { padding: 11px 0; font: 600 1rem/1.4 var(--sans); color: var(--ink); }
.start-page :is(.start-fold, .start-mat, .start-faq) > summary:hover { color: var(--accent-ink); }
.start-page :is(.start-fold, .start-mat, .start-faq)[open] { padding-bottom: 10px; }
.start-page :is(.start-fold, .start-mat, .start-faq)[open] > summary { margin-bottom: 8px; border-bottom: 1px solid var(--line); }
.start-fold > :not(summary) { min-width: 0; }
.start-mats { margin: 12px 0 0; }
.start-mat > summary .start-meta { font-weight: 400; }
.start-meta { margin: 0 0 6px; font-size: .9rem; color: var(--muted); }
.start-mat p, .start-faq p { margin: 0 0 6px; }
.start-guides { margin: 8px 0 0; padding-left: 1.2em; } .start-guides li { margin: 0 0 6px; }
.start-src { font-size: .85rem; color: var(--muted); overflow-wrap: anywhere; }
.start-note { margin: 18px 0; padding: 12px 18px; border-left: 4px solid var(--danger); border-radius: 0 var(--radius) var(--radius) 0; background: var(--danger-soft); }
.start-note h3 { margin: 0 0 6px; }
.home-start { margin: 10px 0 0; font-size: .95rem; }
/* „Słowniczek pierwszych pojęć ML” /pl/slowniczek/ (T84, site-src/glossary-page.js) */
.gl-jump .chips { margin: 4px 0 8px; }
.gl-term { margin: 0 0 14px; padding: 14px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); scroll-margin-top: 72px; }
.gl-term h2 { margin: 0 0 2px; font-size: 1.2rem; }
.gl-term p { margin: 0 0 6px; }
.gl-term .gl-en { font-size: .88rem; color: var(--muted); }
.gl-term .gl-links { margin: 0; font-size: .92rem; overflow-wrap: anywhere; }
.gl-term:target { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
/* PL home, „Kursy”: the AI path card under the ML course (T95) */
.home-course + .home-course { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); } /* the second and third course cards (AI path T95, NN course T124) */
.home-course .home-more .muted { font-weight: 400; }
/* site-src/teach.css — „Dla prowadzących” /pl/dla-prowadzacych/ and the print-ready quiz sheets /pl/dla-prowadzacych/kartkowka/ (tasks/T86,
   site-src/teach-page.js). Joined into the one stylesheet (assets.js). Print: only the sheet in the URL anchor (:target), the key only when open. */
.tp-meet { margin: 0 0 14px; padding: 14px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); scroll-margin-top: 72px; }
.tp-meet h3 { margin: 0 0 6px; font-size: 1.15rem; }
.tp-meet p { margin: 0 0 6px; }
.tp-meet ol, .tp-meet ul { margin: 4px 0 10px; padding-left: 1.3em; }
.tp-meet li { margin: 0 0 4px; }
.tp-meet:target { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.tp-min { color: var(--muted); font-size: .92rem; }
.tp-label { margin: 10px 0 2px; font-weight: 600; }
.tp-links { overflow-wrap: anywhere; font-size: .95rem; }
.tp-how li { margin: 0 0 8px; }
.tp-cite { margin: 8px 0; padding: 10px 14px; border-left: 4px solid var(--line); border-radius: 0 var(--radius) var(--radius) 0; background: var(--paper); overflow-wrap: anywhere; font-size: .92rem; }
.kk-sheet { margin: 0 0 18px; padding: 14px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); scroll-margin-top: 72px; }
.kk-sheet:target { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.kk-sheet h2 { margin: 0 0 4px; font-size: 1.2rem; }
.kk-meta { margin: 0 0 4px; font-size: .88rem; color: var(--muted); overflow-wrap: anywhere; }
.kk-hint { margin: 0 0 10px; font-size: .9rem; }
.kk-group h3 { margin: 12px 0 4px; font-size: 1.05rem; }
.kk-name { margin: 0 0 8px; display: flex; gap: 8px; align-items: flex-end; }
.kk-line { flex: 1; min-width: 6em; border-bottom: 1px solid var(--muted); }
.kk-qs { margin: 0 0 8px; padding-left: 1.3em; }
.kk-qs > li { margin: 0 0 10px; }
.kk-q { margin: 0 0 4px; font-weight: 600; }
.kk-opts { margin: 0; padding-left: 1.4em; list-style: lower-alpha; }
.kk-opts li { margin: 0 0 2px; }
.kk-key { margin: 10px 0 0; font-size: .92rem; }
.kk-key summary { cursor: pointer; font-weight: 600; }
.kk-why { padding-left: 1.3em; }
@media print {
  body:has(.kk-page) header.top, body:has(.kk-page) nav.crumbs, body:has(.kk-page) footer.bottom, body:has(.kk-page) .skip, .kk-intro, .kk-jump, .kk-hint { display: none !important; }
  body:has(.kk-page) { background: #fff; color: #000; }
  body:has(.kk-sheet:target) .kk-sheet:not(:target) { display: none; }
  .kk-sheet { margin: 0; padding: 0; border: 0; box-shadow: none !important; background: none; break-after: page; }
  .kk-group + .kk-group, .kk-key { break-before: page; }
  .kk-qs > li { break-inside: avoid; }
  .kk-key:not([open]) { display: none; }
  .kk-key summary { list-style: none; }
  .kk-page a { color: inherit; text-decoration: none; }
}
/* site-src/schema.css — static topic diagrams (site-src/schemas/, T51). Colours only from tokens (atlas.css, ui.css, --plot-c* in atlas-2.css), so the light and dark themes both work. */
.schema { margin: 1.1em 0 1.5em; }
.schema svg { display: block; width: 100%; max-width: 440px; height: auto; margin: 0 auto; overflow: visible; }
.schema figcaption { margin-top: .5em; text-align: center; font: .85rem/1.4 var(--sans); color: var(--muted); }
.sc { --k0: var(--plot-c0); --k1: var(--plot-c1); --k2: var(--plot-c2); --k3: var(--plot-c6); --k4: var(--plot-c4); }
.sc text { font-family: var(--sans); fill: var(--ink); }
.sc .t-t { font-size: 12px; } .sc .t-n { font-size: 11px; } .sc .t-s { font-size: 11px; fill: var(--muted); } .sc .t-b { font-size: 12px; font-weight: 700; } .sc .t-h { font-size: 13px; font-weight: 700; } .sc .t-xl { font-size: 28px; font-weight: 700; } .sc .t-l { font-size: 18px; font-weight: 700; } .sc .t-xl.faint { fill: var(--faint); }
.sc .bx { fill: var(--paper); stroke: var(--line-strong); stroke-width: 1.2; }
.sc .bx.k0 { fill: color-mix(in srgb, var(--k0) 13%, var(--paper)); stroke: var(--k0); } .sc .bx.k1 { fill: color-mix(in srgb, var(--k1) 13%, var(--paper)); stroke: var(--k1); }
.sc .bx.k2 { fill: color-mix(in srgb, var(--k2) 13%, var(--paper)); stroke: var(--k2); } .sc .bx.k3 { fill: color-mix(in srgb, var(--k3) 13%, var(--paper)); stroke: var(--k3); }
.sc .bx.k4 { fill: color-mix(in srgb, var(--k4) 15%, var(--paper)); stroke: var(--k4); }
.sc .grid { fill: none; stroke: var(--line-strong); stroke-width: 1; }
.sc .frame { fill: none; stroke: var(--line-strong); stroke-width: 1; }
.sc .ln { fill: none; stroke: var(--muted); stroke-width: 1.5; } .sc .hd { fill: var(--muted); } .sc .dash { stroke-dasharray: 4 3; }
.sc .ln.k3 { stroke: var(--k3); } .sc .hd.k3 { fill: var(--k3); }
.sc .c0, .sc .c1, .sc .c2, .sc .c4, .sc .c5 { fill: none; stroke-width: 1.5; stroke-linejoin: round; stroke-linecap: round; }
.sc .c0 { stroke: var(--k0); } .sc .c1 { stroke: var(--k1); } .sc .c2 { stroke: var(--k2); } .sc .c4 { stroke: var(--k4); } .sc .c5 { stroke: var(--plot-c5); }
.sc .thick { stroke-width: 2.4; }
.sc .pt { stroke: var(--paper); stroke-width: 1; } .sc .pt.k0 { fill: var(--k0); } .sc .pt.k1 { fill: var(--k1); } .sc .pt.k2 { fill: var(--k2); } .sc .pt.k3 { fill: var(--k3); } .sc .pt.k4 { fill: var(--k4); } .sc .pt.k5 { fill: var(--plot-c5); }
.sc .sbar.k0 { fill: var(--k0); } .sc .sbar.k1 { fill: var(--k1); } .sc .sbar-old { fill: none; stroke: var(--plot-c5); stroke-width: 1.5; stroke-dasharray: 4 3; }
.sc .reg { fill: color-mix(in srgb, var(--k1) 10%, transparent); stroke: none; } .sc .reg.k0 { fill: color-mix(in srgb, var(--k0) 10%, transparent); }
.sc .band { fill: color-mix(in srgb, var(--k0) 18%, transparent); stroke: none; } .sc .rug { stroke: var(--muted); stroke-width: 1; }