/* Poradniki i narzędzia (podstrony). Ta sama estetyka co strona główna: czerń, pomarańcz, Inter. */
/* Inter z własnego serwera (bez Google Fonts). Licencja: fonts/OFL.txt */
@font-face { font-family: "Inter"; font-style: normal; font-weight: 300 800; font-display: swap;
  src: url(fonts/inter-v20-cyrillic.woff2) format("woff2"); unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 300 800; font-display: swap;
  src: url(fonts/inter-v20-latin-ext.woff2) format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 300 800; font-display: swap;
  src: url(fonts/inter-v20-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+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
:root {
  --bg: #0A0908; --ink: #F6F2EC; --text: rgba(246,242,236,.86); --muted: rgba(246,242,236,.66); --faint: rgba(246,242,236,.44);
  --line: rgba(246,242,236,.12); --card: rgba(255,255,255,.03); --accent: #FF6B2C; --accent-2: #FF8A4F;
  --pad: clamp(18px, 3.2vw, 46px);
  color-scheme: dark;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: "Inter", system-ui, sans-serif; background: var(--bg); color: var(--ink); line-height: 1.6;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
  background-image: radial-gradient(55% 38% at 88% 0%, rgba(255,107,44,.11), transparent 70%); background-repeat: no-repeat; }
a { color: inherit; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* GÓRNY PASEK */
.top { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: clamp(18px, 3.4vw, 44px);
  padding: 12px var(--pad); background: rgba(10,9,8,.84); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line); }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; letter-spacing: -.02em; text-decoration: none; }
.logo svg { width: 28px; height: 28px; transition: transform .6s cubic-bezier(.2,.8,.2,1); }
.logo:hover svg { transform: rotate(90deg); }
.top nav { display: flex; gap: clamp(16px, 3vw, 36px); font-size: 15px; color: var(--muted); }
.top nav a { text-decoration: none; white-space: nowrap; transition: color .25s; }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--ink); }
.btn-cta { margin-left: auto; font-weight: 600; font-size: 14.5px; color: #140A04; background: var(--accent); white-space: nowrap;
  padding: 10px 18px; border-radius: 999px; text-decoration: none; box-shadow: 0 0 36px rgba(255,107,44,.22); transition: background .25s; }
.btn-cta:hover { background: var(--accent-2); }

/* ARTYKUŁ */
.art { max-width: 780px; margin: 0 auto; padding: clamp(26px, 6vh, 60px) var(--pad) 24px; }
.art .crumbs { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.art .crumbs li { margin: 0; font-size: 13.5px; color: var(--faint); }
.art .crumbs li + li::before { content: "›"; margin-right: 8px; color: var(--faint); }
.art .crumbs a { color: var(--faint); text-decoration: none; } .art .crumbs a:hover { color: var(--ink); }
.art h1 { font-size: clamp(32px, 5.2vw, 56px); line-height: 1.06; letter-spacing: -.038em; font-weight: 800; margin: 18px 0 16px; text-wrap: balance; }
.meta { font-size: 14px; color: var(--faint); }
.lead { font-size: clamp(17.5px, 1.5vw, 20px); line-height: 1.55; color: var(--muted); margin-top: 18px; }
.tldr { margin: 30px 0; padding: 20px 22px 18px; border: 1px solid rgba(255,138,79,.38); border-radius: 18px; background: rgba(255,107,44,.06); }
.tldr > strong, .toc > strong { display: block; font-size: 12.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--accent-2); margin-bottom: 10px; }
.tldr ul { margin: 0; padding-left: 20px; }
.toc { margin: 26px 0 8px; padding: 18px 22px; border: 1px solid var(--line); border-radius: 18px; background: var(--card); }
.toc > strong { color: var(--faint); }
.art .toc ol { padding-left: 20px; margin: 0; columns: 2; column-gap: 32px; }
.art .toc li { break-inside: avoid; font-size: 15px; margin: 0 0 6px; }
.art .toc a { text-decoration: none; color: var(--muted); } .art .toc a:hover { color: var(--ink); }

.art h2 { font-size: clamp(25px, 2.8vw, 33px); line-height: 1.18; letter-spacing: -.028em; font-weight: 700; margin: 52px 0 14px; scroll-margin-top: 90px; text-wrap: balance; }
.art h3 { font-size: clamp(19px, 1.8vw, 22px); line-height: 1.3; letter-spacing: -.015em; font-weight: 650; margin: 30px 0 10px; scroll-margin-top: 90px; }
.art p, .art li, .art dd { font-size: 17px; color: var(--text); }
.art p + p, .art p + ul, .art p + ol, .art ul + p, .art ol + p { margin-top: 14px; }
.art ul, .art ol { padding-left: 22px; margin-top: 12px; }
.art li + li { margin-top: 7px; }
.art li::marker { color: var(--accent-2); }
.art strong { color: var(--ink); font-weight: 650; }
.art p a, .art li a, .art td a, .note a { color: var(--accent-2); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.art p a:hover, .art li a:hover, .art td a:hover { color: var(--ink); }
.note { margin-top: 18px; padding: 14px 16px; border-left: 3px solid var(--accent); background: var(--card); border-radius: 0 12px 12px 0; font-size: 15.5px; color: var(--muted); }

.tbl { margin: 22px 0; overflow-x: auto; border: 1px solid var(--line); border-radius: 16px; }
.tbl table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 15px; }
.tbl th, .tbl td { text-align: left; vertical-align: top; padding: 12px 14px; border-bottom: 1px solid var(--line); color: var(--text); }
.tbl th { font-size: 12.5px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--faint); background: rgba(255,255,255,.03); }
.tbl tr:last-child td { border-bottom: 0; }
.tbl td strong { white-space: nowrap; }
.tbl caption { caption-side: bottom; text-align: left; padding: 10px 14px; font-size: 13px; color: var(--faint); }
.tbl caption a { color: var(--accent-2); text-underline-offset: 2px; }
.tbl td.num, .tbl th.num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }

.steps { list-style: none; padding: 0 !important; counter-reset: s; display: grid; gap: 12px; margin-top: 18px !important; }
.steps li { counter-increment: s; position: relative; padding: 16px 18px 16px 58px; border: 1px solid var(--line); border-radius: 16px; background: var(--card); margin: 0 !important; }
.steps li::before { content: counter(s); position: absolute; left: 16px; top: 15px; width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center; font-size: 14px; font-weight: 700; color: #140A04; background: var(--accent); }

.cta { margin: 44px 0; padding: clamp(22px, 3vw, 30px); border-radius: 22px; border: 1px solid rgba(255,138,79,.38);
  background: linear-gradient(135deg, rgba(255,107,44,.17), rgba(255,107,44,.04)); display: grid; gap: 12px; }
.cta .t { font-size: clamp(21px, 2.3vw, 26px); font-weight: 700; letter-spacing: -.02em; line-height: 1.2; }
.cta p { color: var(--muted); font-size: 16.5px; }
.cta .row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }
.pill { display: inline-flex; align-items: center; gap: 12px; font-weight: 600; font-size: 15.5px; text-decoration: none; white-space: nowrap;
  background: #F6F2EC; color: #130A04; padding: 7px 7px 7px 20px; border-radius: 999px; box-shadow: 0 10px 34px rgba(0,0,0,.45); transition: background .25s, transform .2s; }
.pill:hover { background: #fff; transform: translateY(-1px); }
.pill i { width: 34px; height: 34px; border-radius: 50%; background: var(--accent); display: grid; place-items: center; font-style: normal; color: #140A04; }
.pill i svg { width: 10px; height: 10px; }
.pill--ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); box-shadow: none; padding: 12px 20px; }
.pill--ghost:hover { background: rgba(255,255,255,.05); border-color: var(--accent); }

details { border: 1px solid var(--line); border-radius: 16px; background: var(--card); padding: 0 18px; }
details + details { margin-top: 10px; }
summary { cursor: pointer; list-style: none; padding: 16px 30px 16px 0; font-weight: 600; font-size: 16.5px; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 13px; font-size: 22px; font-weight: 400; color: var(--accent-2); transition: transform .25s; }
details[open] summary::after { transform: rotate(45deg); }
details > *:not(summary) { padding-bottom: 16px; }
details p { font-size: 16px !important; }

.author { display: flex; gap: 16px; align-items: flex-start; margin-top: 56px; padding: 22px 0 0; border-top: 1px solid var(--line); }
.author svg { width: 40px; height: 40px; flex: none; }
.author p { font-size: 14.5px !important; color: var(--muted) !important; }
.author strong { display: block; color: var(--ink); font-size: 15.5px; }

/* HUB I KARTY */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; margin-top: 28px; }
.card { display: grid; gap: 10px; align-content: start; padding: 22px; border-radius: 20px; border: 1px solid var(--line); background: var(--card);
  text-decoration: none; transition: border-color .25s, transform .25s, background .25s; }
.card:hover { border-color: rgba(255,138,79,.55); background: rgba(255,107,44,.05); transform: translateY(-2px); }
.card .k { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent-2); font-weight: 600; }
.card .t { font-size: 19px; font-weight: 700; line-height: 1.25; letter-spacing: -.015em; }
.card .d { font-size: 15px; color: var(--muted); }
.wide { max-width: 1120px; }

/* NARZĘDZIA (kalkulator) */
.art--tool { max-width: 1120px; }
.art--tool > .lead, .art--tool .prose { max-width: 760px; }
.calc { display: grid; grid-template-columns: 1.25fr 1fr; gap: 20px; margin-top: 30px; align-items: start; }
.calc fieldset { border: 1px solid var(--line); border-radius: 20px; background: var(--card); padding: 20px 22px 22px; min-width: 0; }
.calc fieldset + fieldset { margin-top: 16px; }
.calc legend { padding: 0 8px; margin-left: -8px; font-weight: 700; font-size: 17px; letter-spacing: -.01em; }
.trow, .frow { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.trow:last-child { border-bottom: 0; }
.trow label, .frow label { font-size: 15.5px; color: var(--text); }
.num { display: inline-flex; align-items: center; gap: 8px; flex: none; }
.num em { font-style: normal; font-size: 14px; color: var(--faint); width: 18px; }
.calc input[type="number"] { width: 92px; font: inherit; font-size: 16px; font-weight: 600; color: var(--ink); text-align: right;
  background: rgba(255,255,255,.05); border: 1px solid var(--line); border-radius: 12px; padding: 9px 12px; }
.calc input[type="number"]:focus, .calc input[type="range"]:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.calc input[type="range"] { width: 100%; margin: 6px 0 2px; accent-color: var(--accent); }
.calc output { font-weight: 700; font-size: 16px; color: var(--accent-2); }
.calc .hint { font-size: 13.5px; color: var(--faint); margin: 6px 0 4px; line-height: 1.5; }
.calc .hint a { color: var(--accent-2); }
.calc__out { position: sticky; top: 84px; display: grid; gap: 14px; padding: 26px; border-radius: 22px;
  border: 1px solid rgba(255,138,79,.4); background: linear-gradient(160deg, rgba(255,107,44,.16), rgba(255,107,44,.03) 60%); }
.calc__out .k { font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent-2); font-weight: 600; }
.calc__out .big { font-size: clamp(38px, 4.4vw, 54px); font-weight: 800; letter-spacing: -.04em; line-height: 1; }
.calc__out dl { display: grid; gap: 0; margin-top: 4px; }
.calc__out dl > div { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.calc__out dt { font-size: 15px; color: var(--muted); }
.calc__out dd { font-size: 16px; font-weight: 700; text-align: right; white-space: nowrap; }
.calc__out .pill { justify-self: start; margin-top: 4px; white-space: normal; }
.calc__bar { display: none; }
@media (max-width: 900px) {
  .calc { grid-template-columns: 1fr; }
  .calc__out { position: static; }
  .calc__bar { display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 15; justify-content: space-between; align-items: center; gap: 12px;
    padding: 12px max(16px, env(safe-area-inset-right, 0px)) calc(12px + env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px));
    background: rgba(17,13,10,.95); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); border-top: 1px solid rgba(255,138,79,.38);
    font-size: 13.5px; color: var(--muted); transition: transform .3s ease, opacity .3s ease; }
  .calc__bar strong { display: block; font-size: 18px; color: var(--ink); letter-spacing: -.02em; }
  .calc__bar span + span { text-align: right; }
  .calc__bar.hide { transform: translateY(110%); opacity: 0; pointer-events: none; }
}
@media (max-width: 420px) {
  .trow { align-items: flex-start; }
  .calc input[type="number"] { width: 78px; }
}

/* STOPKA */
.foot { max-width: 1180px; margin: 64px auto 0; padding: 30px var(--pad) 44px; border-top: 1px solid var(--line);
  display: grid; grid-template-columns: 1.1fr 2fr; gap: 28px; }
.foot .brand strong { display: block; font-size: 26px; font-weight: 700; letter-spacing: -.03em; }
.foot .brand span { font-size: 14px; color: var(--muted); }
.foot ul { list-style: none; columns: 2; column-gap: 28px; font-size: 14.5px; color: var(--muted); }
.foot li { margin-bottom: 8px; break-inside: avoid; }
.foot a { text-decoration: none; } .foot a:hover { color: var(--accent-2); }

@media (max-width: 760px) {
  .top nav { display: none; }
  .btn-cta { padding: 9px 15px; font-size: 14px; }
  .toc ol { columns: 1; }
  .foot { grid-template-columns: 1fr; }
  .foot ul { columns: 1; }
  .art p, .art li { font-size: 16.5px; }
}