/* ============================================================
   Hostingownik - design system
   Paleta: grafit serwerowni + miedź (kable, ciepło, złącza)
   Typografia: Space Grotesk (display) / IBM Plex Sans (tekst)
                / IBM Plex Mono (etykiety techniczne)
   ============================================================ */

:root {
  --bg: #f2f3f3;
  --surface: #ffffff;
  --surface-2: #e8eceb;
  --ink: #111a1c;
  --ink-soft: #2f3c3e;
  --muted: #5c6a6b;
  --line: #d8dedd;
  --line-strong: #b9c4c2;

  --accent: #a34d0b;
  --accent-ink: #7d3a06;
  --accent-soft: #f7ece1;
  --accent-line: #e6cdb5;

  --signal: #0f6572;
  --signal-soft: #e3f0f1;
  --signal-line: #bcd9dc;

  --danger: #96291c;
  --danger-soft: #fbeae7;
  --danger-line: #ecc6bf;

  --panel: #0b1316;
  --panel-2: #121f23;
  --panel-ink: #eef3f3;
  --panel-muted: #a4b4b5;

  --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --header-h: 64px;
  --sidebar-w: 300px;
  --radius-s: 4px;
  --radius-m: 8px;

  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);

  --shadow-pop: 0 12px 32px rgba(11, 19, 22, 0.14);

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a1012;
    --surface: #101a1d;
    --surface-2: #162226;
    --ink: #e7eeed;
    --ink-soft: #c6d2d0;
    --muted: #9faeae;
    --line: #1e2b2e;
    --line-strong: #2c3d40;

    --accent: #e8a76b;
    --accent-ink: #f3c396;
    --accent-soft: #24180f;
    --accent-line: #3d2a1a;

    --signal: #63c4d0;
    --signal-soft: #0f2226;
    --signal-line: #1f3d42;

    --danger: #ef9d90;
    --danger-soft: #27130f;
    --danger-line: #4a2420;

    --panel: #070d0f;
    --panel-2: #0f1a1e;
    --panel-ink: #eef3f3;
    --panel-muted: #9fb0b1;

    --shadow-pop: 0 12px 32px rgba(0, 0, 0, 0.55);
  }
}

/* ---------- Reset ---------- */

*, *::before, *::after { box-sizing: border-box; }

html {
  font-size: 17px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
}

body {
  margin: 0;
  background: var(--bg);
  background-image:
    radial-gradient(60rem 30rem at 100% -10%, rgba(163, 77, 11, 0.06), transparent 70%),
    radial-gradient(50rem 26rem at -10% 100%, rgba(15, 101, 114, 0.05), transparent 70%);
  background-attachment: fixed;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (min-width: 900px) {
  html { font-size: 18px; }
}

img, svg { max-width: 100%; }
img { display: block; height: auto; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-ink); }

button { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin: 0;
}

p { text-wrap: pretty; }

::selection { background: var(--accent); color: #fff; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 300;
  background: var(--surface);
  color: var(--ink);
  padding: 10px 16px;
  border: 1px solid var(--line-strong);
  text-decoration: none;
  transition: top 160ms var(--ease-out);
}
.skip-link:focus { top: 12px; }

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  padding: 0 clamp(14px, 2.4vw, 28px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  flex-shrink: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-s);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-left: -6px;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  cursor: pointer;
  color: var(--ink);
}

.menu-toggle:active { transform: scale(0.96); }

/* Search */

.search {
  position: relative;
  flex: 1 1 auto;
  max-width: 430px;
  margin-left: auto;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

.search input {
  width: 100%;
  height: 40px;
  padding: 0 14px 0 37px;
  font: inherit;
  font-size: 0.9rem;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  appearance: none;
  transition: border-color 160ms var(--ease-out), background 160ms var(--ease-out);
}

.search input::placeholder { color: var(--muted); opacity: 1; }

.search input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface);
}

.search input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.search-results {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  max-height: min(62vh, 520px);
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-pop);
  z-index: 120;
  padding: 6px;
}

.search-results a {
  display: block;
  padding: 9px 11px;
  text-decoration: none;
  color: var(--ink);
  border-radius: var(--radius-s);
}

.search-results a:hover,
.search-results a.is-active {
  background: var(--accent-soft);
  color: var(--accent-ink);
}

.sr-title {
  display: block;
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1.35;
}

.sr-section {
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.sr-empty {
  padding: 14px 12px;
  font-size: 0.9rem;
  color: var(--muted);
}

.header-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex-shrink: 0;
  padding: 9px 15px;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--accent-ink);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-s);
  text-decoration: none;
  transition: transform 160ms var(--ease-out), background 160ms var(--ease-out);
}

.header-link:hover { transform: translateY(-1px); color: var(--accent-ink); }
.header-link:active { transform: scale(0.98); }
.header-link svg { transition: transform 200ms var(--ease-out); }
.header-link:hover svg { transform: translateX(2px); }

/* ---------- Layout ---------- */

.layout { display: block; }

.sidebar {
  position: fixed;
  top: var(--header-h);
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--surface);
  border-right: 1px solid var(--line);
  padding: 22px 0 32px;
  z-index: 90;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.sidebar::-webkit-scrollbar { width: 9px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 6px; }

.sidebar-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 0 22px 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 14px;
}

.sidebar-kicker {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.sidebar-total {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted);
  white-space: nowrap;
}

.sidebar-nav { padding: 0 10px; }

.sb-section { margin-bottom: 6px; }

.sb-section-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 12px 12px 7px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

.sb-num { color: var(--accent); opacity: 0.85; }

.sb-list { list-style: none; margin: 0; padding: 0; }

.sb-link {
  display: block;
  padding: 6px 12px 6px 30px;
  font-size: 0.9rem;
  line-height: 1.4;
  color: var(--ink-soft);
  text-decoration: none;
  border-radius: var(--radius-s);
  transition: background 140ms var(--ease-out), color 140ms var(--ease-out);
}

.sb-link:hover { background: var(--surface-2); color: var(--ink); }

.sb-link.is-active {
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-weight: 500;
}

.sidebar-foot {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 20px;
  padding: 16px 22px 0;
  border-top: 1px solid var(--line);
}

.sidebar-foot a {
  font-size: 0.82rem;
  color: var(--muted);
  text-decoration: none;
}

.sidebar-foot a:hover { color: var(--accent); text-decoration: underline; }

.sidebar-overlay {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  background: rgba(7, 13, 15, 0.55);
  z-index: 85;
  opacity: 0;
  transition: opacity 220ms var(--ease-out);
}

.sidebar-overlay.is-open { opacity: 1; }

.main {
  margin-left: var(--sidebar-w);
  padding-top: var(--header-h);
  min-height: 100vh;
}

.wrap {
  max-width: 1020px;
  margin: 0 auto;
  padding: 0 clamp(18px, 3.6vw, 52px);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  min-height: clamp(360px, 40vw, 480px);
  background: var(--panel);
  color: var(--panel-ink);
  overflow: hidden;
  border-bottom: 2px solid var(--accent);
}

.hero-copy {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 22px;
  padding: clamp(30px, 4.5vw, 64px) clamp(24px, 4vw, 60px);
}

.hero h1 { margin: 0; }

.hero-brand {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5vw, 3.9rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1;
  color: var(--panel-ink);
}

.hero-line {
  display: block;
  margin-top: 16px;
  font-family: var(--font-body);
  font-size: clamp(1.2rem, 1.9vw, 1.55rem);
  font-weight: 400;
  line-height: 1.36;
  letter-spacing: 0;
  color: #c6d3d2;
  max-width: 30ch;
}

.hero-lead {
  margin: 0;
  max-width: 44ch;
  font-size: 0.98rem;
  line-height: 1.62;
  color: #b7c6c5;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  gap: 9px;
  padding: 13px 22px;
  font-family: var(--font-body);
  font-size: 0.94rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius-s);
  text-decoration: none;
  transition: transform 160ms var(--ease-out), background 160ms var(--ease-out);
}

.hero-cta:hover { background: #8c4108; color: #fff; transform: translateY(-1px); }
.hero-cta:active { transform: scale(0.985); }
.hero-cta svg { transition: transform 220ms var(--ease-out); }
.hero-cta:hover svg { transform: translateX(3px); }

.hero-media {
  position: relative;
  overflow: hidden;
  background: var(--panel-2);
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 60% 50%;
  animation: heroReveal 900ms var(--ease-out) both;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--panel) 0%, rgba(11, 19, 22, 0.55) 26%, rgba(11, 19, 22, 0) 62%);
  pointer-events: none;
}

.hero-media figcaption {
  position: absolute;
  right: 14px;
  bottom: 10px;
  z-index: 3;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(238, 243, 243, 0.62);
}

@keyframes heroReveal {
  from { clip-path: inset(0 0 0 100%); transform: scale(1.04); }
  to { clip-path: inset(0 0 0 0); transform: scale(1); }
}

.hero-copy > * { animation: heroIn 700ms var(--ease-out) both; }
.hero-copy > :nth-child(1) { animation-delay: 60ms; }
.hero-copy > :nth-child(2) { animation-delay: 140ms; }
.hero-copy > :nth-child(3) { animation-delay: 220ms; }
.hero-copy > :nth-child(4) { animation-delay: 300ms; }

@keyframes heroIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Explainer / request path ---------- */

.explain {
  padding: clamp(38px, 5vw, 62px) 0 clamp(30px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
}

.explain-head {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(18px, 3vw, 48px);
  align-items: end;
  margin-bottom: clamp(26px, 3.4vw, 40px);
}

.explain h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  letter-spacing: -0.025em;
}

.explain-head p {
  margin: 0;
  max-width: 58ch;
  color: var(--muted);
  font-size: 0.96rem;
}

.path {
  display: grid;
  grid-template-columns: 1fr 56px 1fr 56px 1fr 56px 1fr;
  align-items: stretch;
}

.path-node {
  display: block;
  padding: 16px 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  text-decoration: none;
  color: var(--ink);
  transition: transform 200ms var(--ease-out), border-color 200ms var(--ease-out);
}

.path-node:hover {
  transform: translateY(-3px);
  border-color: var(--accent-line);
  color: var(--ink);
}

.path-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.path-title {
  display: block;
  margin-top: 6px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.path-desc {
  display: block;
  margin-top: 3px;
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--muted);
}

.path-link {
  position: relative;
  align-self: center;
  height: 1px;
  background: var(--line-strong);
}

.path-pulse {
  position: absolute;
  top: -2px;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulseTravel 3.2s var(--ease-in-out) infinite;
}

.path-link:nth-of-type(2) .path-pulse { animation-delay: 1.05s; }
.path-link:nth-of-type(3) .path-pulse { animation-delay: 2.1s; }

@keyframes pulseTravel {
  0% { left: 0; opacity: 0; }
  12% { opacity: 1; }
  88% { opacity: 1; }
  100% { left: calc(100% - 5px); opacity: 0; }
}

.explain-note {
  margin: 18px 0 0;
  font-size: 0.86rem;
  color: var(--muted);
}

/* ---------- Home section index ---------- */

.home-index { padding: clamp(36px, 4.6vw, 56px) 0 80px; }

.index-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 8px;
}

.index-head h2 {
  font-size: clamp(1.45rem, 2.4vw, 1.85rem);
}

.index-head span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

.home-section {
  padding: 30px 0 26px;
  border-bottom: 1px solid var(--line);
}

.section-head {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin-bottom: 16px;
}

.section-num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  padding-top: 6px;
  border-top: 2px solid var(--accent);
  display: block;
}

.section-head h2 {
  font-size: clamp(1.22rem, 1.9vw, 1.42rem);
  letter-spacing: -0.02em;
}

.section-head p {
  margin: 5px 0 0;
  font-size: 0.86rem;
  color: var(--muted);
  max-width: 62ch;
}

.topic-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 38px;
}

.topic-list li { border-top: 1px solid var(--line); }

.topic-list li:nth-child(-n+2) { border-top: 0; }

.topic-list a {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 2px 14px;
  text-decoration: none;
  color: var(--ink);
}

.topic-list a:hover { color: var(--accent-ink); }

.topic-text { flex: 1 1 auto; min-width: 0; }

.topic-title {
  display: block;
  font-size: 0.96rem;
  font-weight: 500;
  line-height: 1.4;
}

.topic-excerpt {
  display: block;
  margin-top: 3px;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--muted);
}

.topic-arrow {
  flex: 0 0 auto;
  margin-top: 3px;
  color: var(--accent);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 180ms var(--ease-out), transform 180ms var(--ease-out);
}

.topic-list a:hover .topic-arrow,
.topic-list a:focus-visible .topic-arrow { opacity: 1; transform: translateX(0); }

/* Scroll reveal - content is visible by default */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 520ms var(--ease-out), transform 520ms var(--ease-out);
}

.reveal.is-in { opacity: 1; transform: none; }

/* ---------- Article ---------- */

.article {
  max-width: 820px;
  margin: 0 auto;
  padding: clamp(28px, 4vw, 52px) clamp(18px, 3.6vw, 52px) 88px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 22px;
}

.breadcrumb a { color: var(--ink-soft); font-weight: 500; text-decoration: none; }
.breadcrumb a:hover { color: var(--accent-ink); text-decoration: underline; }
.breadcrumb span[aria-hidden] { opacity: 0.55; }

.article-head { margin-bottom: 26px; }

.article-kicker {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-ink);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: 3px;
}

.article h1 {
  font-size: clamp(1.85rem, 3.6vw, 2.65rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.article-lead {
  margin: 16px 0 0;
  font-size: 1.04rem;
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 62ch;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Article table of contents */

.article-toc {
  margin: 26px 0 34px;
  padding: 16px 20px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
}

.article-toc p {
  margin: 0 0 9px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.article-toc ol {
  margin: 0;
  padding-left: 1.15em;
  font-size: 0.9rem;
  line-height: 1.55;
}

.article-toc li { margin: 4px 0; }
.article-toc a { color: var(--ink-soft); text-decoration: none; }
.article-toc a:hover { color: var(--accent); text-decoration: underline; }

/* Body */

.article-body { font-size: 1rem; }

.article-body > h2 {
  font-size: clamp(1.3rem, 2.1vw, 1.55rem);
  margin: 2.5em 0 0.7em;
  padding-top: 1.1em;
  border-top: 1px solid var(--line);
  letter-spacing: -0.02em;
}

.article-body > h2:first-child { margin-top: 0; padding-top: 0; border-top: 0; }

.article-body h3 {
  font-size: 1.1rem;
  margin: 1.8em 0 0.5em;
  letter-spacing: -0.01em;
}

.article-body p { margin: 0 0 1.05em; }

.article-body ul { margin: 0 0 1.15em; padding-left: 1.2em; }
.article-body ol { margin: 0 0 1.15em; padding-left: 1.35em; }
.article-body li { margin: 0 0 0.45em; }
.article-body ul li::marker { color: var(--accent); }

.article-body strong { font-weight: 600; color: var(--ink); }

.article-body a { text-decoration-color: rgba(163, 77, 11, 0.4); }
.article-body a:hover { text-decoration-color: currentColor; }

.article-body > p:last-child { margin-bottom: 0; }

/* Tables */

.table-responsive {
  margin: 1.6em 0;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  background: var(--surface);
  -webkit-overflow-scrolling: touch;
}

.table-responsive table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 0.9rem;
  line-height: 1.5;
}

.table-responsive th {
  padding: 11px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: var(--surface-2);
  border-bottom: 1px solid var(--line-strong);
  vertical-align: bottom;
}

.table-responsive td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  color: var(--ink-soft);
}

.table-responsive tr:last-child td { border-bottom: 0; }
.table-responsive td strong { color: var(--ink); }

/* Callout boxes - explicit text colour in both themes */

.info-box, .warning-box, .tip-box, .key-takeaways {
  margin: 1.7em 0;
  padding: 17px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  font-size: 0.95rem;
  line-height: 1.62;
  color: var(--ink);
}

.info-box { background: var(--signal-soft); border-color: var(--signal-line); }
.warning-box { background: var(--danger-soft); border-color: var(--danger-line); }
.tip-box { background: var(--accent-soft); border-color: var(--accent-line); }

.info-box p, .warning-box p, .tip-box p { margin: 0 0 0.7em; }
.info-box p:last-child, .warning-box p:last-child, .tip-box p:last-child { margin-bottom: 0; }

.key-takeaways { background: var(--surface); border-color: var(--line-strong); }

.key-takeaways::before {
  content: "W skrócie";
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--accent);
}

.key-takeaways ul { margin: 0; padding-left: 1.15em; }
.key-takeaways li { margin: 0 0 0.4em; }
.key-takeaways li:last-child { margin-bottom: 0; }

/* FAQ (details/summary) */

.faq-item {
  border-top: 1px solid var(--line);
  padding: 4px 0;
}

.faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 500;
  line-height: 1.4;
  cursor: pointer;
  list-style: none;
  color: var(--ink);
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: "";
  flex: 0 0 auto;
  width: 13px;
  height: 13px;
  margin-top: 5px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg);
  transition: transform 200ms var(--ease-out);
}

.faq-item[open] summary::after { transform: rotate(-135deg); }
.faq-item summary:hover { color: var(--accent-ink); }

.faq-a {
  padding: 0 30px 16px 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.faq-a p { margin: 0 0 0.7em; }
.faq-a p:last-child { margin-bottom: 0; }

/* Glossary */

dl.glossary { margin: 1.4em 0; }

dl.glossary dt {
  margin-top: 1.25em;
  padding-top: 0.9em;
  border-top: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--ink);
}

dl.glossary dt:first-child { margin-top: 0; padding-top: 0; border-top: 0; }

dl.glossary dd {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* Pager */

.pager {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 48px;
  padding-top: 26px;
  border-top: 2px solid var(--ink);
}

.pager a {
  display: block;
  padding: 15px 17px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  text-decoration: none;
  color: var(--ink);
  transition: transform 180ms var(--ease-out), border-color 180ms var(--ease-out);
}

.pager a:hover { transform: translateY(-2px); border-color: var(--accent-line); }
.pager a:active { transform: scale(0.99); }

.pager-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 5px;
}

.pager-title {
  display: block;
  font-family: var(--font-display);
  font-size: 0.96rem;
  font-weight: 500;
  line-height: 1.35;
}

.pager a.is-next { text-align: right; }
.pager a.is-empty { visibility: hidden; }

.back-home {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 26px;
  font-size: 0.86rem;
  color: var(--muted);
  text-decoration: none;
}

.back-home:hover { color: var(--accent); }

/* ---------- Footer ---------- */

.site-footer {
  margin-left: var(--sidebar-w);
  background: var(--panel);
  color: #c3d0cf;
  border-top: 2px solid var(--accent);
}

.footer-inner {
  max-width: 1020px;
  margin: 0 auto;
  padding: clamp(38px, 5vw, 60px) clamp(18px, 3.6vw, 52px) 34px;
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 3vw, 46px);
}

.footer-brand span {
  display: block;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--panel-ink);
  margin-top: 10px;
}

.footer-mark { color: var(--accent); }

.footer-brand p {
  margin: 10px 0 0;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--panel-muted);
  max-width: 34ch;
}

.footer-col h2 {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--panel-muted);
  margin-bottom: 12px;
}

.footer-col a {
  display: block;
  padding: 4px 0;
  font-size: 0.86rem;
  color: #c3d0cf;
  text-decoration: none;
}

.footer-col a:hover { color: var(--accent); text-decoration: underline; }

.footer-bottom {
  max-width: 1020px;
  margin: 0 auto;
  padding: 16px clamp(18px, 3.6vw, 52px) 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  font-size: 0.74rem;
  color: var(--panel-muted);
}

/* ---------- Cookie bar ---------- */

.vd-cookie-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 200;
  background: var(--surface);
  border-top: 1px solid var(--line-strong);
  box-shadow: 0 -8px 30px rgba(11, 19, 22, 0.12);
}

.vd-cookie-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px clamp(16px, 3vw, 32px);
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: space-between;
}

.vd-cookie-inner p {
  margin: 0;
  flex: 1 1 420px;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--ink-soft);
}

.vd-cookie-actions { display: flex; gap: 9px; flex-shrink: 0; }

.vd-btn-solid, .vd-btn-ghost {
  padding: 9px 16px;
  font-size: 0.82rem;
  font-weight: 500;
  border-radius: var(--radius-s);
  cursor: pointer;
  transition: transform 140ms var(--ease-out), background 140ms var(--ease-out);
}

.vd-btn-solid { color: #fff; background: var(--accent); border: 1px solid var(--accent); }
.vd-btn-solid:hover { background: #8c4108; }
.vd-btn-ghost { color: var(--ink); background: transparent; border: 1px solid var(--line-strong); }
.vd-btn-ghost:hover { background: var(--surface-2); }
.vd-btn-solid:active, .vd-btn-ghost:active { transform: scale(0.97); }

/* ---------- Noscript ---------- */

.noscript {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 20px;
}
.noscript h1 { font-size: 2rem; }
.noscript ul { line-height: 2; }

/* ---------- Responsive ---------- */

@media (max-width: 1100px) {
  .footer-inner { grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 1000px) {
  :root { --sidebar-w: 300px; }

  .menu-toggle { display: inline-flex; }

  .sidebar {
    transform: translateX(-100%);
    transition: transform 260ms var(--ease-out);
    box-shadow: var(--shadow-pop);
    width: min(86vw, 340px);
  }

  .sidebar.is-open { transform: translateX(0); }

  .main, .site-footer { margin-left: 0; }

  .hero { grid-template-columns: 1fr; min-height: 0; }

  .hero-copy { padding: clamp(28px, 6vw, 48px) clamp(20px, 5vw, 44px); order: 1; }

  .hero-media { order: 2; height: clamp(190px, 34vw, 300px); }

  .hero-media::after {
    background: linear-gradient(180deg, var(--panel) 0%, rgba(11, 19, 22, 0.35) 22%, rgba(11, 19, 22, 0) 55%);
  }

  .hero-line { max-width: 34ch; }

  .explain-head { grid-template-columns: 1fr; gap: 12px; align-items: start; }

  .path {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .path-link {
    width: 1px;
    height: 30px;
    margin-left: 26px;
    background: var(--line-strong);
  }

  .path-pulse {
    top: 0;
    left: -2px;
    animation: pulseTravelY 3.2s var(--ease-in-out) infinite;
  }

  .path-link:nth-of-type(2) .path-pulse { animation-delay: 1.05s; }
  .path-link:nth-of-type(3) .path-pulse { animation-delay: 2.1s; }

  @keyframes pulseTravelY {
    0% { top: 0; opacity: 0; }
    12% { opacity: 1; }
    88% { opacity: 1; }
    100% { top: calc(100% - 5px); opacity: 0; }
  }

  .topic-list { gap: 0 26px; }
}

@media (max-width: 700px) {
  .header-inner { gap: 10px; padding: 0 12px; }
  .brand-name { display: none; }
  .header-link { display: none; }
  .search { max-width: none; }

  .hero-brand { font-size: clamp(2.3rem, 11vw, 3rem); }
  .hero-line { font-size: 1.12rem; }
  .hero-lead { font-size: 0.92rem; }
  .hero-cta { padding: 12px 18px; font-size: 0.9rem; }

  .explain { padding: 32px 0 28px; }
  .explain h2 { font-size: 1.4rem; }

  .index-head { flex-wrap: wrap; gap: 4px; }
  .index-head span { font-size: 0.64rem; }

  .section-head { grid-template-columns: 40px minmax(0, 1fr); gap: 10px; }

  .topic-list { grid-template-columns: 1fr; }
  .topic-list li:nth-child(2) { border-top: 1px solid var(--line); }
  .topic-list a { padding: 12px 0 13px; }
  .topic-arrow { display: none; }

  .article { padding: 24px 16px 64px; }
  .article-body { font-size: 0.98rem; }
  .article h1 { font-size: clamp(1.6rem, 7vw, 2.05rem); }
  .article-lead { font-size: 0.98rem; }
  .article-toc { padding: 14px 16px; }

  .pager { grid-template-columns: 1fr; }
  .pager a.is-next { text-align: left; }
  .pager a.is-empty { display: none; }

  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }

  .vd-cookie-inner { padding: 14px 16px; gap: 12px; }
  .vd-cookie-inner p { flex: 1 1 100%; font-size: 0.78rem; }
  .vd-cookie-actions { width: 100%; }
  .vd-cookie-actions button { flex: 1 1 50%; }

  .table-responsive table { font-size: 0.84rem; }
  .info-box, .warning-box, .tip-box, .key-takeaways { padding: 14px 16px; font-size: 0.92rem; }
}

/* ---------- Motion preferences ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .hero-media img, .hero-copy > * { animation: none; }
  .path-pulse { display: none; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Print ---------- */

@media print {
  .site-header, .sidebar, .site-footer, .vd-cookie-bar, .pager, .back-home, .article-toc { display: none !important; }
  .main { margin-left: 0; padding-top: 0; }
  .article { max-width: none; padding: 0; }
  body { background: #fff; color: #000; }
}