/* Puszcza Krzemowa — świerkowa noc z zorzą / mglisty poranek */
:root {
  --c-bg: #07120e;          /* świerkowa noc */
  --c-panel: rgba(8, 20, 15, .72);
  --c-text: #cdd8bd;        /* porost */
  --c-muted: #7f9479;       /* szary mech */
  --c-moss: #9ccc5f;        /* młody mech */
  --c-leaf: #4f8a3a;        /* igliwie w cieniu */
  --c-teal: #46d3b0;        /* krzemowy turkus */
  --c-amber: #e6a650;       /* sierść żubra, świetliki */
  --c-birch: #f1ead8;       /* kora brzozy */
  --c-rule: #2a4a38;
  --glow-teal: rgba(70, 211, 176, .16);
  --glow-moss: rgba(156, 204, 95, .12);
  --glow-amber: rgba(230, 166, 80, .12);
  --fur-dark: #8b7f74;      /* sierść łba żubra */
  --fur-face: #b8ad9f;
  --fur-body: #8d8a86;
  --fur-leg: #6f6b66;
  --mono: ui-monospace, "Cascadia Mono", "JetBrains Mono", "DejaVu Sans Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --c-bg: #e9eee2;
    --c-panel: rgba(244, 246, 238, .8);
    --c-text: #213127;
    --c-muted: #56685a;
    --c-moss: #43701f;
    --c-leaf: #8db071;
    --c-teal: #11806a;
    --c-amber: #9a5f12;
    --c-birch: #12201a;
    --c-rule: #b6c6ab;
    --glow-teal: rgba(17, 128, 106, .14);
    --glow-moss: rgba(67, 112, 31, .12);
    --glow-amber: rgba(154, 95, 18, .12);
    --fur-dark: #4a3f37;
    --fur-face: #75695d;
    --fur-body: #6b6863;
    --fur-leg: #55514c;
    color-scheme: light;
  }
}

/* Grafiki ASCII mają własną czcionkę: systemowe monospace (np. na Androidzie) nie mają
   znaków ramek i bloków, więc przeglądarka brała je z innej czcionki o innej szerokości
   i rysunki się rozjeżdżały. Podzbiór DejaVu Sans Mono, licencja: pk-mono-LICENSE.txt */
@font-face {
  font-family: "PK Mono";
  src: url("pk-mono.woff2?v=1") format("woff2");
  font-weight: 400;
  font-display: block;
}
@font-face {
  font-family: "PK Mono";
  src: url("pk-mono-bold.woff2?v=1") format("woff2");
  font-weight: 700;
  font-display: block;
}

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

html {
  background: var(--c-bg);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  min-height: 100vh;
  color: var(--c-text);
  background: var(--c-bg);
  font-family: var(--mono);
  font-size: 1rem;
  line-height: 1.7;
  text-align: center;
  overflow-x: hidden;
  padding: env(safe-area-inset-top, 0) env(safe-area-inset-right, 0) env(safe-area-inset-bottom, 0) env(safe-area-inset-left, 0);
}

/* zorza nad puszczą: trzy miękkie poświaty dryfujące bardzo powoli */
body::before {
  content: "";
  position: fixed;
  inset: -20%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(40% 35% at 25% 20%, var(--glow-teal), transparent 70%),
    radial-gradient(35% 30% at 75% 30%, var(--glow-moss), transparent 70%),
    radial-gradient(45% 40% at 60% 85%, var(--glow-amber), transparent 70%);
  animation: aurora 38s ease-in-out infinite alternate;
}
@keyframes aurora {
  0%   { transform: translate3d(-4%, -2%, 0) rotate(0deg); }
  50%  { transform: translate3d(3%, 2%, 0) rotate(4deg); }
  100% { transform: translate3d(-2%, 4%, 0) rotate(-3deg); }
}

#puszcza {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

main, footer {
  position: relative;
  z-index: 1;
  width: min(100% - 2rem, 78ch);
  margin-inline: auto;
}

/* panel pod tekstem, żeby animacja nie walczyła z czytelnością */
main {
  margin-top: clamp(1.5rem, 6vh, 4rem);
  padding: clamp(1.25rem, 4vw, 3rem);
  background: var(--c-panel);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  border: 1px solid var(--c-rule);
  border-radius: 4px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .15), 0 0 80px var(--glow-teal);
}
/* narożniki jak w ramce terminala */
main::before, main::after {
  position: absolute;
  color: var(--c-teal);
  line-height: 1;
  font-size: .9rem;
  opacity: .8;
}
main::before { content: "┌─"; top: -.5em; left: -.3em; }
main::after  { content: "─┘"; bottom: -.5em; right: -.3em; }

/* grafiki ASCII skalują się do szerokości kolumny tekstu */
.hero, section { container-type: inline-size; }

pre {
  margin: 0 auto;
  width: fit-content;
  max-width: 100%;
  text-align: left;
  font-family: "PK Mono", var(--mono);
  line-height: 1.15;
  padding-bottom: .15em;   /* podkreślenia w ostatnim wierszu */
  overflow: hidden;
}
pre i, pre b, pre u, pre em { font-style: normal; font-weight: inherit; text-decoration: none; }

/* ---------- hero ---------- */
.prompt {
  margin: 0 0 1.5rem;
  max-width: none;
  text-align: left;          /* jak w terminalu */
  font-size: .85rem;
  color: var(--c-text);
}
.ps1 { color: var(--c-moss); }
.pc { color: var(--c-teal); }
.cursor { color: var(--c-amber); margin-left: .1ch; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.logo {
  /* SVG z tools/logo.py: wygląda tak samo na każdym ekranie (bloki to prostokąty, nie znaki) */
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
  overflow: visible;
  filter: drop-shadow(0 0 18px var(--glow-teal));
}
.logo-frame { fill: none; stroke: var(--c-leaf); }
/* litery mienią się od kory brzozy przez mech i turkus do bursztynu */
.logo .st-birch { stop-color: var(--c-birch); }
.logo .st-moss { stop-color: var(--c-moss); }
.logo .st-teal { stop-color: var(--c-teal); }
.logo .st-amber { stop-color: var(--c-amber); }
.logo-shine {
  transform-box: fill-box;
  animation: shimmer 12s ease-in-out infinite;
}
@keyframes shimmer {
  0%, 15% { transform: translateX(-66.667%); }
  60%, 100% { transform: translateX(0); }
}

.lead {
  margin: 1.75rem auto 0;
  max-width: 50ch;
  font-size: 1.05rem;
}

.zubr { margin: 2.25rem 0 0; }
.zubr pre {
  /* 74 znaki szerokości, ~0.6em każdy; klatki animacji: tools/zubr.py */
  color: var(--c-muted);
  font-size: 6px;
  font-size: min(13px, 100cqi / 45);
  line-height: 1.15;
}
/* klasy kolorów z generatora: grzywa, sierść głowy, pysk, róg, zad, nogi, oko, para, kurz */
.zubr .m { color: var(--c-amber); }
.zubr .h { color: var(--fur-dark); }
.zubr .f { color: var(--fur-face); }
.zubr .k { color: var(--c-birch); }
.zubr .b { color: var(--fur-body); }
.zubr .l { color: var(--fur-leg); }
.zubr .e { color: var(--c-birch); font-weight: 700; }
.zubr .o { color: var(--c-teal); }
.zubr .d { color: var(--c-amber); opacity: .7; }
.grass {
  color: var(--c-moss);
  background: linear-gradient(90deg, var(--c-leaf), var(--c-moss), var(--c-teal), var(--c-moss), var(--c-leaf));
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: sway 9s linear infinite;
}
@keyframes sway { to { background-position: -200% 0; } }

/* ---------- sekcje ---------- */
section { margin-top: 3.5rem; }

h2 {
  display: flex;
  align-items: center;
  gap: 1.5ch;
  margin: 0 0 1.5rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: lowercase;
  color: var(--c-moss);
}
h2::before, h2::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-rule) 30%, var(--c-teal));
}
h2::after { background: linear-gradient(90deg, var(--c-teal), var(--c-rule) 70%, transparent); }
h2 .proper { text-transform: none; }   /* nazwy własne w nagłówkach, np. Podlasie */

p { margin: 0 auto 1rem; max-width: 62ch; }

/* pojawianie się sekcji przy przewijaniu (tylko gdy działa JS) */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .9s ease, transform .9s ease; }
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- ekosystem ---------- */
.map { margin: 1.5rem 0 2rem; }
/* drzewo ekosystemu to SVG: linie i boxy to geometria, napisy wyśrodkowane przez
   text-anchor, więc układ nie zależy od szerokości znaków na danym urządzeniu */
.tree {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
  overflow: visible;
  font-family: "PK Mono", var(--mono);
  font-size: 12px;
}
.tree text { fill: var(--c-muted); text-anchor: middle; }
.tree .bit { fill: var(--c-teal); transition: fill .4s; }
.tree .bit.flip { fill: var(--c-amber); }
.tree .star { fill: var(--c-amber); animation: star 3s ease-in-out infinite; }
@keyframes star { 50% { fill: var(--c-birch); } }
.tree .grass { fill: var(--c-moss); opacity: .8; text-anchor: start; }
.tree .trunk { fill: none; stroke: var(--c-amber); stroke-width: 1.4; }
.tree .link, .tree .box { fill: none; stroke: var(--c-muted); stroke-width: 1; }
.tree .node { fill: var(--c-birch); font-size: 11px; font-weight: 700; animation: node 10s ease-in-out infinite; }
.tree .n2 { animation-delay: 2s; }
.tree .n3 { animation-delay: 4s; }
.tree .n4 { animation-delay: 6s; }
.tree .n5 { animation-delay: 8s; }
@keyframes node {
  0%, 25%, 100% { fill: var(--c-birch); }
  8% { fill: var(--c-teal); }
}
.map figcaption {
  margin-top: .75rem;
  font-size: .85rem;
  color: var(--c-muted);
}

.tree-list {
  list-style: none;
  width: fit-content;
  max-width: 60ch;
  margin: 0 auto;
  padding: 0;
  text-align: left;
}
.tree-list li {
  position: relative;
  padding-left: 4ch;
  padding-bottom: 1rem;
}
.tree-list li::before {
  content: "├──";
  position: absolute;
  left: 0;
  color: var(--c-teal);
}
/* pionowa gałąź łączy kolejne wpisy */
.tree-list li::after {
  content: "";
  position: absolute;
  left: .5ch;
  top: 1.45em;
  bottom: 0;
  border-left: 1px solid var(--c-rule);
}
.tree-list li:last-child::before { content: "└──"; }
.tree-list li:last-child::after { display: none; }
.tree-list strong {
  display: block;
  color: var(--c-birch);
  transition: color .3s;
}
.tree-list li:hover strong { color: var(--c-amber); }

/* ---------- wizja ---------- */
.vision {
  position: relative;
  max-width: 54ch;
  margin: 0 auto 1.5rem;
  padding: 1.25rem 1.5rem;
  border: 1px dashed var(--c-teal);
  box-shadow: 0 0 40px var(--glow-teal);
}
.vision::before {
  content: " wizja.txt ";
  position: absolute;
  top: -.8em;
  left: 50%;
  transform: translateX(-50%);
  padding: 0 .5ch;
  background: var(--c-bg);
  color: var(--c-teal);
  font-size: .8rem;
}
.vision p { margin: 0; font-size: 1.12rem; color: var(--c-birch); }

/* ---------- jak to działa: kroki podświetlają się po kolei ---------- */
.flow {
  list-style: none;
  counter-reset: krok;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 19ch), 1fr));
  gap: .75rem;
  margin: 0 0 1.75rem;
  padding: 0;
  text-align: left;
}
.flow li {
  counter-increment: krok;
  padding: .6rem .8rem;
  border: 1px solid var(--c-rule);
  font-size: .9rem;
  line-height: 1.5;
  animation: krok 12s ease-in-out infinite;
}
.flow li:nth-child(2) { animation-delay: 2s; }
.flow li:nth-child(3) { animation-delay: 4s; }
.flow li:nth-child(4) { animation-delay: 6s; }
.flow li:nth-child(5) { animation-delay: 8s; }
.flow li:nth-child(6) { animation-delay: 10s; }
@keyframes krok {
  0%, 22%, 100% { border-color: var(--c-rule); box-shadow: none; }
  8% { border-color: var(--c-teal); box-shadow: 0 0 18px var(--glow-teal); }
}
.flow strong { display: block; color: var(--c-birch); }
.flow strong::before {
  content: counter(krok, decimal-leading-zero) " → ";
  color: var(--c-teal);
  font-weight: 400;
}

.chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .4rem 1rem;
  margin: 0;
  padding: 0;
  font-size: .9rem;
}
.chips li { color: var(--c-moss); transition: color .2s; }
.chips li::before { content: "[ "; color: var(--c-muted); }
.chips li::after { content: " ]"; color: var(--c-muted); }
.chips li:hover { color: var(--c-amber); }

/* ---------- co zyskuje region ---------- */
.cards {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 24ch), 1fr));
  gap: 1rem;
  margin: 0 0 1.75rem;
  padding: 0;
  text-align: left;
}
.cards li {
  padding: .9rem 1rem;
  border: 1px dashed var(--c-rule);
  background: rgba(0, 0, 0, .12);
  line-height: 1.55;
  transition: border-color .3s;
}
.cards li:hover { border-color: var(--c-amber); }
.cards strong { display: block; margin-bottom: .25rem; color: var(--c-amber); }
.cards strong::before { content: "# "; color: var(--c-muted); font-weight: 400; }

.rules {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .25rem 1.75rem;
  font-size: .85rem;
  color: var(--c-teal);
}
.rules span::before { content: "✓ "; color: var(--c-amber); }

/* ---------- kontakt ---------- */
.mailbox {
  display: inline-grid;
  margin: .75rem auto 1.5rem;
  color: var(--c-teal);
  font-size: clamp(.8rem, 3.6vw, 1.05rem);
}
.mailbox pre { line-height: 1.2; width: auto; }
.mail {
  display: block;
  padding: .5rem 0;
  text-align: center;
  color: var(--c-amber);
  font-weight: 700;
  text-decoration: none;
  border-left: 1px solid var(--c-teal);
  border-right: 1px solid var(--c-teal);
  margin-inline: calc(.5ch - .5px);
  animation: glow 4s ease-in-out infinite;
}
@keyframes glow { 50% { text-shadow: 0 0 14px var(--c-amber); } }
.mail:hover { color: var(--c-birch); }

.actions { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: .5rem 1.5rem; }
.btn {
  font: inherit;
  color: var(--c-moss);
  background: none;
  border: 0;
  padding: .3rem .6rem;
  cursor: pointer;
  text-decoration: none;
  transition: color .2s, background-color .2s;
}
.btn:hover { color: var(--c-bg); background: var(--c-moss); }
.status { flex-basis: 100%; color: var(--c-amber); min-height: 1.7em; }

a { color: var(--c-moss); }
a:hover { color: var(--c-birch); }

:focus-visible {
  outline: 2px solid var(--c-amber);
  outline-offset: 3px;
}

/* ---------- stopka ---------- */
footer {
  margin-top: 2.5rem;
  margin-bottom: 3rem;
  font-size: .85rem;
  color: var(--c-muted);
}
footer p { margin: 0 auto .25rem; max-width: none; }
footer a { color: var(--c-muted); }

/* ---------- pomocnicze ---------- */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip {
  position: absolute; left: 1rem; top: -3rem; z-index: 2;
  padding: .5rem 1rem; background: var(--c-bg); color: var(--c-amber);
}
.skip:focus { top: 1rem; }

@media (max-width: 480px) {
  body { font-size: .95rem; }
  main { width: calc(100% - 1rem); }
}
/* przy ograniczonym ruchu zostają tylko łagodne zmiany koloru, bez przesunięć */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  body::before, .logo-shine { animation: none; }
  .js .reveal { transform: none; }
}