/* site-src/atlas.css — Atlas v2: an encyclopedia that reads like a good book. Serif prose, sans UI, one ink accent, light and dark. */
: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 { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.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 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: #fff; }
.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 a:nth-child(4):not(.lang):not(.support), .menu a:nth-child(5):not(.lang):not(.support) { display: none; }
  .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 (max-width: 400px) { .menu a:nth-child(3):not(.lang):not(.support) { display: none; } }
@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(280px, 1fr)); gap: 14px; }
.path { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.path h3 { margin: 0 0 4px; font-size: 1.12rem; }
.path p { margin: 0 0 10px; font-size: .9rem; }
.path ol { margin: 0; padding-left: 1.4em; font-size: .94rem; line-height: 1.75; }
.path li::marker { color: var(--faint); font-family: var(--mono); font-size: .82em; }

/* 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(--line-strong); 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; }