/* ============================================================
   ANTYKWADRAT — arkusz stylów
   Kwadrat zamiast okładki. Papier, atrament, jeden kolor skóry.
   ============================================================ */

:root {
  /* papier szaro-zielony, atrament z zielonym odcieniem */
  --papier:        #EDEEE8;
  --papier-2:      #E3E4DC;   /* wgłębienia, tła kwadratów */
  --papier-3:      #D6D8CE;   /* linie, obramowania */
  --atrament:      #1B1F1A;
  --atrament-2:    #454A44;   /* tekst pomocniczy */
  --atrament-3:    #7A7F78;   /* metryczka, podpisy */

  --skora:         #7A1F2B;   /* Kanon, odznaka BTR */
  --skora-tlo:     #7A1F2B14;
  --grafit:        #3E4A5C;   /* Rezerwa */
  --grafit-tlo:    #3E4A5C14;
  --mosiadz:       #8C6A2E;   /* Białe kruki */
  --mosiadz-tlo:   #8C6A2E16;

  --fokus:         #2F5DA8;

  --f-tekst:   'Literata', 'Georgia', 'Times New Roman', serif;
  --f-tytul:   'Newsreader', 'Literata', 'Georgia', serif;
  --f-mono:    'IBM Plex Mono', 'SFMono-Regular', 'Menlo', monospace;

  --miara: 66ch;
  --r: 2px;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --papier:      #161815;
    --papier-2:    #1E211D;
    --papier-3:    #2C302B;
    --atrament:    #E6E4DC;
    --atrament-2:  #B8B7AE;
    --atrament-3:  #85877F;
    --skora:       #C4525F;
    --skora-tlo:   #C4525F1F;
    --grafit:      #8FA3BF;
    --grafit-tlo:  #8FA3BF1F;
    --mosiadz:     #C9A455;
    --mosiadz-tlo: #C9A45520;
    --fokus:       #7FA6E8;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --papier:      #161815;
  --papier-2:    #1E211D;
  --papier-3:    #2C302B;
  --atrament:    #E6E4DC;
  --atrament-2:  #B8B7AE;
  --atrament-3:  #85877F;
  --skora:       #C4525F;
  --skora-tlo:   #C4525F1F;
  --grafit:      #8FA3BF;
  --grafit-tlo:  #8FA3BF1F;
  --mosiadz:     #C9A455;
  --mosiadz-tlo: #C9A45520;
  --fokus:       #7FA6E8;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--papier);
  color: var(--atrament);
  font-family: var(--f-tekst);
  font-size: 17px;
  line-height: 1.55;
  font-feature-settings: "kern", "liga", "onum";
}
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--fokus);
  outline-offset: 2px;
}
::selection { background: var(--skora); color: var(--papier); }

/* ---------- ramy ---------- */
.rama { max-width: 1180px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 40px); }

header.naglowek {
  display: flex; align-items: baseline; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  padding: 22px 0 18px;
  border-bottom: 1px solid var(--papier-3);
}
.marka {
  font-family: var(--f-tytul); font-optical-sizing: auto; font-size: 30px; font-weight: 500;
  letter-spacing: -0.01em; text-decoration: none; display: inline-flex; align-items: center; gap: 10px;
}
.marka .kw { display: inline-block; width: 0.58em; height: 0.58em; background: var(--atrament); }
nav.menu { display: flex; gap: 22px; flex-wrap: wrap; font-family: var(--f-mono); font-size: 12.5px; letter-spacing: 0.06em; text-transform: uppercase; }
nav.menu a { text-decoration: none; color: var(--atrament-2); padding: 4px 0; border-bottom: 1px solid transparent; }
nav.menu a:hover, nav.menu a[aria-current="page"] { color: var(--atrament); border-bottom-color: var(--atrament); }

main { min-height: 60vh; padding-bottom: 60px; }
footer.stopka {
  border-top: 1px solid var(--papier-3); padding: 28px 0 40px; margin-top: 40px;
  color: var(--atrament-2); font-size: 14.5px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 28px;
}
footer.stopka h4 { margin: 0 0 8px; font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--atrament-3); font-weight: 500; }
footer.stopka p { margin: 0 0 6px; }

/* ---------- typografia ---------- */
h1, h2, h3 { font-family: var(--f-tytul); font-optical-sizing: auto; font-weight: 500; line-height: 1.1; text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: clamp(30px, 4.6vw, 46px); }
h2 { font-size: clamp(22px, 2.8vw, 30px); }
h3 { font-size: 20px; }
.etykieta { font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--atrament-3); font-weight: 500; }
.mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
p { margin: 0 0 1em; }
.wstep { max-width: var(--miara); font-size: 18.5px; line-height: 1.5; color: var(--atrament-2); margin: 30px 0 8px; }
.wstep strong { color: var(--atrament); font-weight: 600; }

/* ---------- koszyki ---------- */
.k-LISTA   { --k: var(--skora);   --k-tlo: var(--skora-tlo); }
.k-REZERWA { --k: var(--grafit);  --k-tlo: var(--grafit-tlo); }
.k-CENA    { --k: var(--mosiadz); --k-tlo: var(--mosiadz-tlo); }
.k-STUB    { --k: var(--atrament-3); --k-tlo: transparent; }

.znak { display: inline-flex; align-items: center; gap: 7px; font-family: var(--f-mono); font-size: 11.5px; letter-spacing: 0.07em; text-transform: uppercase; color: var(--k); font-weight: 500; }
.znak::before { content: ""; width: 9px; height: 9px; background: var(--k); flex: none; }

.btr {
  display: inline-flex; align-items: baseline; gap: 4px;
  font-family: var(--f-mono); font-variant-numeric: tabular-nums; font-size: 12.5px;
  color: var(--skora); border: 1px solid var(--skora); padding: 3px 7px 2px; line-height: 1;
}
.btr b { font-weight: 600; font-size: 14px; }
.btr small { opacity: .75; }

/* ---------- panel sterowania ---------- */
.sterowanie {
  display: grid; grid-template-columns: 1fr auto auto; gap: 12px; align-items: end;
  padding: 22px 0 18px; margin-top: 8px; border-bottom: 1px solid var(--papier-3);
}
@media (max-width: 720px) { .sterowanie { grid-template-columns: 1fr; } }
.sterowanie label { display: grid; gap: 6px; }
.sterowanie input, .sterowanie select {
  font: inherit; font-family: var(--f-tekst); font-size: 16px; color: var(--atrament);
  background: var(--papier); border: 1px solid var(--papier-3); border-radius: var(--r);
  padding: 9px 11px; min-width: 0;
}
.sterowanie select { font-family: var(--f-mono); font-size: 13px; }
.koszyki { display: flex; gap: 0; flex-wrap: wrap; border: 1px solid var(--papier-3); border-radius: var(--r); overflow: hidden; }
.koszyki button {
  font: inherit; font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase;
  background: transparent; color: var(--atrament-2); border: 0; border-right: 1px solid var(--papier-3);
  padding: 9px 13px; cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
}
.koszyki button:last-child { border-right: 0; }
.koszyki button[aria-pressed="true"] { background: var(--atrament); color: var(--papier); }
.koszyki button .kropka { width: 8px; height: 8px; background: var(--k, var(--atrament-3)); }
.koszyki button[aria-pressed="true"] .kropka { background: var(--papier); }
.licznik { font-family: var(--f-mono); font-size: 12.5px; color: var(--atrament-3); margin: 14px 0 0; }

/* ---------- ściana kwadratów ---------- */
.sciana {
  display: grid; gap: 14px; margin-top: 18px;
  grid-template-columns: repeat(auto-fill, minmax(215px, 1fr));
}
@media (max-width: 480px) { .sciana { grid-template-columns: repeat(2, 1fr); gap: 10px; } }

.kwadrat {
  aspect-ratio: 1 / 1; position: relative; display: flex; flex-direction: column; justify-content: space-between;
  background: var(--papier-2); color: var(--atrament); text-decoration: none;
  padding: 14px 15px 12px; border: 1px solid transparent;
  transition: background .18s ease, border-color .18s ease, transform .18s ease;
}
.kwadrat:hover { background: var(--k-tlo); border-color: var(--k); transform: translateY(-2px); }
.kwadrat .gora { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.kwadrat .autor { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--atrament-2); line-height: 1.35; }
.kwadrat .tytul { font-family: var(--f-tytul); font-optical-sizing: auto; font-size: clamp(17px, 1.9vw, 22px); line-height: 1.12; font-weight: 500; text-wrap: balance; overflow-wrap: anywhere; margin: 8px 0; }
.kwadrat .tytul.dlugi { font-size: 16px; }
.kwadrat .dol { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; border-top: 1px solid var(--papier-3); padding-top: 8px; }
.kwadrat .cena { font-family: var(--f-mono); font-variant-numeric: tabular-nums; font-size: 13.5px; }
.kwadrat .btr { font-size: 11px; padding: 2px 5px 1px; }
.kwadrat .btr b { font-size: 12px; }
.kwadrat.maly { aspect-ratio: auto; padding: 12px 13px 10px; }
.kwadrat.maly .tytul { font-size: 17px; margin: 5px 0 6px; }

/* ---------- strona książki ---------- */
.ksiazka { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); margin-top: 34px; align-items: start; }
@media (max-width: 860px) { .ksiazka { grid-template-columns: 1fr; gap: 26px; } }
.ksiazka .lewa { position: sticky; top: 20px; display: grid; gap: 18px; }
@media (max-width: 860px) { .ksiazka .lewa { position: static; } }
.ksiazka .kwadrat { cursor: default; transform: none !important; }
.ksiazka .kwadrat:hover { background: var(--papier-2); border-color: transparent; }
.ksiazka .kwadrat .tytul { font-size: clamp(22px, 2.6vw, 28px); }

.metryczka { font-family: var(--f-mono); font-size: 13px; line-height: 1.6; display: grid; grid-template-columns: max-content 1fr; gap: 3px 16px; color: var(--atrament-2); }
.metryczka dt { color: var(--atrament-3); letter-spacing: 0.05em; text-transform: uppercase; font-size: 11px; padding-top: 2px; }
.metryczka dd { margin: 0; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.metryczka .wyroznik { color: var(--skora); font-weight: 500; }

.kup {
  display: inline-flex; align-items: center; justify-content: space-between; gap: 14px;
  font-family: var(--f-mono); font-size: 13px; letter-spacing: 0.04em; text-decoration: none;
  background: var(--atrament); color: var(--papier); padding: 12px 16px; border-radius: var(--r);
}
.kup:hover { background: var(--skora); }
.kup .cena { font-size: 15px; font-weight: 600; font-variant-numeric: tabular-nums; }

.prawa .nad { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.prawa h1 { margin-bottom: 8px; }
.prawa .autor-linia { font-family: var(--f-mono); font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--atrament-2); margin-bottom: 26px; }
.opis { max-width: var(--miara); font-size: 17.5px; line-height: 1.6; }
.opis p { margin: 0 0 1.05em; hyphens: auto; }
.opis p:first-child::first-letter { font-family: var(--f-tytul); font-size: 3.1em; float: left; line-height: .82; padding: .06em .1em 0 0; font-weight: 500; }

/* ocena panelu — szyna 0–55 */
.panel { margin: 30px 0 0; max-width: var(--miara); padding: 16px 0 0; border-top: 1px solid var(--papier-3); }
.panel .tyt { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
.panel .tyt .etykieta { color: var(--atrament-2); }
.szyna { position: relative; height: 26px; }
.szyna .os { position: absolute; left: 0; right: 0; top: 12px; height: 1px; background: var(--papier-3); }
.szyna .prog { position: absolute; top: 6px; width: 1px; height: 13px; background: var(--atrament-3); }
.szyna .prog span { position: absolute; top: 15px; left: -8px; font-family: var(--f-mono); font-size: 10px; color: var(--atrament-3); }
.szyna .kreska { position: absolute; top: 8px; width: 2px; height: 9px; background: var(--atrament-2); margin-left: -1px; }
.szyna .mediana { position: absolute; top: 3px; width: 9px; height: 19px; background: var(--skora); margin-left: -4px; }
.panel .pod { font-family: var(--f-mono); font-size: 12px; color: var(--atrament-3); margin-top: 16px; display: flex; gap: 18px; flex-wrap: wrap; }
.panel .pod b { color: var(--atrament-2); font-weight: 500; }

/* zobacz też */
.zobacz { margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--papier-3); }
.zobacz h2 { font-size: 22px; margin-bottom: 4px; }
.zobacz .pod { color: var(--atrament-3); font-size: 14px; margin-bottom: 18px; }
.zobacz ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.zobacz li { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 16px; align-items: start; }
@media (max-width: 600px) { .zobacz li { grid-template-columns: 1fr; gap: 8px; } }
.zobacz .dlaczego { font-size: 16px; line-height: 1.5; color: var(--atrament-2); max-width: 52ch; padding-top: 6px; }
.zobacz .dlaczego .gdzie { display: block; margin-top: 6px; }

/* stub — ślepy zaułek */
.powrot {
  display: inline-flex; align-items: center; gap: 10px; text-decoration: none;
  font-family: var(--f-mono); font-size: 12.5px; letter-spacing: 0.05em; color: var(--atrament-2);
  padding: 9px 13px; border: 1px solid var(--papier-3); border-radius: var(--r); background: var(--papier);
}
.powrot:hover { border-color: var(--atrament); color: var(--atrament); }
.powrot .tyt { font-family: var(--f-tekst); letter-spacing: 0; text-transform: none; font-size: 14px; color: var(--atrament); }
.stub .prawa .obok { max-width: var(--miara); margin: 26px 0 0; padding: 16px 18px; background: var(--papier-2); border-left: 3px solid var(--k, var(--atrament-3)); font-size: 16px; color: var(--atrament-2); }
.stub .prawa .obok .etykieta { display: block; margin-bottom: 6px; }
.stub .powrot-dol { margin-top: 36px; }

/* strony tekstowe */
.tekst { max-width: var(--miara); margin-top: 30px; }
.tekst h1 { margin-bottom: 18px; }
.tekst h2 { font-size: 22px; margin: 32px 0 10px; }
.tekst p { font-size: 17.5px; line-height: 1.6; }
.kryteria { list-style: none; padding: 0; margin: 14px 0 0; display: grid; gap: 14px; counter-reset: k; }
.kryteria li { display: grid; grid-template-columns: 36px 1fr; gap: 12px; align-items: baseline; }
.kryteria li::before { counter-increment: k; content: counter(k); font-family: var(--f-mono); font-size: 13px; color: var(--atrament-3); }
.kryteria b { font-family: var(--f-tytul); font-weight: 500; font-size: 19px; display: block; margin-bottom: 2px; }
.kryteria li.kluczowe b { color: var(--skora); }
.skala { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; font-size: 16px; margin-top: 14px; }
.skala dt { font-family: var(--f-mono); font-variant-numeric: tabular-nums; font-size: 13.5px; color: var(--atrament); }
.skala dd { margin: 0; color: var(--atrament-2); }

.pusto { padding: 60px 0; color: var(--atrament-3); font-family: var(--f-mono); font-size: 13px; }

@media (prefers-reduced-motion: reduce) {
  .kwadrat { transition: none; }
  .kwadrat:hover { transform: none; }
}