[hidden] { display: none !important; }
img { max-width: 100%; }

/* Układ: zeszyt w kratkę (jasny) / tablica szkolna (ciemny); treść po lewej, korepetytor AI po prawej (na telefonie wysuwany od dołu). */
:root {
  --paper: #fbfcfe;
  --grid: #e6ecf4;
  --card: #ffffff;
  --ink: #1b2a44;
  --ink-soft: #55647e;
  --line: #d5deea;
  --pen: #2347a8;
  --pen-soft: #e7edfb;
  --red: #c42e28;
  --ok: #1d7a4b;
  --ok-soft: #e3f4ea;
  --red-soft: #fbe9e7;
  --hi: #fff2a8;
  --f-display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --f-body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Menlo, monospace;
  --f-hand: "Caveat", "Segoe Print", cursive;
  --r: 10px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #16221d; --grid: #1d2b25; --card: #1c2a24; --ink: #e9f0ea; --ink-soft: #a6b6ab;
    --line: #314439; --pen: #94b8ff; --pen-soft: #233a52; --red: #ff8f85; --ok: #7fd6a2;
    --ok-soft: #1f3a2c; --red-soft: #3d2422; --hi: #4a4420; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #16221d; --grid: #1d2b25; --card: #1c2a24; --ink: #e9f0ea; --ink-soft: #a6b6ab;
  --line: #314439; --pen: #94b8ff; --pen-soft: #233a52; --red: #ff8f85; --ok: #7fd6a2;
  --ok-soft: #1f3a2c; --red-soft: #3d2422; --hi: #4a4420; color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; color: var(--ink); font: 16px/1.6 var(--f-body);
  background-color: var(--paper);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
}
.wrap {
  max-width: 1320px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  padding-block: 20px 96px;
}
h1, h2, h3 { font-family: var(--f-display); line-height: 1.15; text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); font-weight: 800; }
h2 { font-size: 1.45rem; font-weight: 800; }
h3 { font-size: 1.12rem; font-weight: 600; }
p { margin: 0; }
a { color: var(--pen); }
button, input, textarea, select { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--pen); outline-offset: 2px; border-radius: 4px; }

.top { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 12px 24px; margin-bottom: 18px; }
.top .eyebrow { font: 500 12px/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 8px; }
.top .marg { font-family: var(--f-hand); font-size: 1.35rem; color: var(--red); transform: rotate(-2deg); display: inline-block; }
.progress { display: flex; gap: 8px; flex-wrap: wrap; }
.pill { font: 500 13px/1 var(--f-mono); padding: 8px 11px; border: 1px solid var(--line); background: var(--card); border-radius: 999px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.pill b { color: var(--pen); font-weight: 500; }

.layout { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 24px; align-items: start; }
.main { min-width: 0; display: grid; gap: 20px; }
.main > * { min-width: 0; }

/* Plan klasy */
.plan { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 16px; }
.plan-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 16px; align-items: baseline; margin-bottom: 12px; }
.plan-head small { color: var(--ink-soft); font-size: 13px; }
.dzialy { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 10px; }
.dzial { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; display: grid; gap: 6px; align-content: start; background: var(--paper); }
.dzial.aktywny { border-color: var(--pen); box-shadow: inset 0 0 0 1px var(--pen); background: var(--pen-soft); }
.dzial .nr { font: 500 12px/1 var(--f-mono); color: var(--ink-soft); }
.dzial h3 { font-size: 1rem; }
.dzial p { font-size: 13px; color: var(--ink-soft); line-height: 1.45; }
.dzial .stan { font: 500 11px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .06em; }
.dzial .stan.gotowe { color: var(--ok); }
.dzial .stan.wkrotce { color: var(--ink-soft); }
.pp { font: 500 11px/1 var(--f-mono); color: var(--ink-soft); border: 1px solid var(--line); border-radius: 4px; padding: 3px 5px; margin-left: 8px; vertical-align: middle; white-space: nowrap; letter-spacing: 0; }
.dalej { margin-top: 12px; }
.tabela { border-collapse: collapse; font-family: var(--f-mono); font-size: 14.5px; font-variant-numeric: tabular-nums; }
.tabela th, .tabela td { border: 1px solid var(--line); padding: 5px 12px; text-align: right; }
.tabela th { color: var(--ink-soft); font-weight: 500; }
.tab-wrap { overflow-x: auto; max-width: 100%; }
.linkbtn { background: none; border: 0; padding: 0; color: var(--pen); font-size: 13px; font-weight: 600; cursor: pointer; text-align: left; text-decoration: underline; text-underline-offset: 3px; }

/* Moduł */
.modul { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.modul-head { padding: 18px 18px 0; display: grid; gap: 6px; }
.modul-head p { color: var(--ink-soft); }
.tabs { display: flex; gap: 4px; overflow-x: auto; padding: 14px 14px 0; border-bottom: 1px solid var(--line); scrollbar-width: none; }
.tabs a { padding: 10px 14px; text-decoration: none; color: var(--ink-soft); font-weight: 600; border-radius: 8px 8px 0 0; border: 1px solid transparent; border-bottom: 0; white-space: nowrap; }
.tabs a[aria-current="page"] { color: var(--pen); background: var(--paper); border-color: var(--line); margin-bottom: -1px; }
.view { padding: 18px; display: grid; gap: 18px; }

/* Teoria */
.teoria { display: grid; gap: 14px; }
.sekcja { border-left: 3px solid var(--line); padding: 2px 0 2px 16px; display: grid; gap: 8px; max-width: 72ch; }
.sekcja:hover { border-left-color: var(--pen); }
.sekcja ul { margin: 0; padding-left: 20px; display: grid; gap: 4px; }
.wz { font-family: var(--f-mono); font-size: .95em; background: linear-gradient(transparent 12%, var(--hi) 12%, var(--hi) 88%, transparent 88%); padding: 0 4px; white-space: nowrap; }
.wzory { display: flex; flex-wrap: wrap; gap: 8px; }
.wzory .wz { font-size: 1rem; padding: 4px 8px; }
.uwaga { font-family: var(--f-hand); font-size: 1.3rem; color: var(--red); line-height: 1.2; }

/* Laboratorium */
.lab { display: grid; gap: 14px; }
.lab-ctrl { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px 18px; }
.suwak { display: grid; gap: 4px; }
.suwak label { display: flex; justify-content: space-between; font-weight: 600; font-size: 14px; }
.suwak output { font-family: var(--f-mono); color: var(--pen); font-variant-numeric: tabular-nums; }
input[type="range"] { width: 100%; accent-color: var(--pen); }
.przyciski { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.btn { border: 1px solid var(--pen); background: var(--pen); color: var(--card); padding: 9px 14px; border-radius: 8px; font-weight: 600; cursor: pointer; font-size: 15px; }
.btn.drugi { background: transparent; color: var(--pen); }
.btn.cichy { border-color: var(--line); background: var(--card); color: var(--ink); }
.btn:disabled { opacity: .5; cursor: default; }
.tor { width: 100%; height: 120px; display: block; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); }
.wykresy { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 10px; }
.wykres { width: 100%; height: 170px; display: block; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); }
.odczyt { display: flex; flex-wrap: wrap; gap: 8px; }
.wyzwanie { border: 1px dashed var(--red); border-radius: 8px; padding: 12px 14px; display: grid; gap: 6px; }
.wyzwanie[hidden] { display: none !important; }
.wyzwanie .uwaga { font-size: 1.25rem; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { border: 1px solid var(--line); background: var(--card); border-radius: 999px; padding: 6px 12px; font-size: 14px; cursor: pointer; }
.chip:hover { border-color: var(--pen); }
.chip[aria-pressed="true"] { border-color: var(--pen); background: var(--pen-soft); color: var(--pen); font-weight: 600; }

/* Zadania */
.zad-layout { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 18px; align-items: start; }
.typy { display: grid; gap: 4px; }
.typ { display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; text-align: left; border: 1px solid transparent; background: none; border-radius: 8px; padding: 8px 10px; cursor: pointer; }
.typ:hover { background: var(--paper); border-color: var(--line); }
.typ[aria-pressed="true"] { background: var(--pen-soft); border-color: var(--pen); }
.typ .n { font-weight: 600; font-size: 14px; }
.typ .gw { font-size: 12px; color: var(--red); letter-spacing: 1px; }
.typ .ile { grid-column: 1 / -1; font: 12px/1.2 var(--f-mono); color: var(--ink-soft); }
.zadanie { display: grid; gap: 14px; min-width: 0; }
.tresc { font-size: 1.08rem; max-width: 70ch; }
.odp { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.odp input { width: 160px; padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); font-family: var(--f-mono); font-size: 16px; }
.odp .jedn { font-family: var(--f-mono); color: var(--ink-soft); }
.wynik { padding: 10px 14px; border-radius: 8px; font-weight: 600; }
.wynik.ok { background: var(--ok-soft); color: var(--ok); }
.wynik.zle { background: var(--red-soft); color: var(--red); }
.wynik[hidden] { display: none !important; }
.kroki { margin: 0; padding-left: 22px; display: grid; gap: 6px; font-family: var(--f-mono); font-size: 14.5px; }
.kroki li::marker { color: var(--red); }
.rozumowanie { display: grid; gap: 8px; border-top: 1px dashed var(--line); padding-top: 14px; }
textarea { width: 100%; min-height: 84px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); resize: vertical; font-size: 16px; }
.male { font-size: 13px; color: var(--ink-soft); }

/* Quiz */
.quiz { display: grid; gap: 14px; max-width: 70ch; }
.pytanie { font-size: 1.12rem; font-weight: 600; }
.opcje { display: grid; gap: 8px; }
.opcja { text-align: left; border: 1px solid var(--line); background: var(--card); padding: 11px 14px; border-radius: 8px; cursor: pointer; font-size: 15.5px; }
.opcja:hover:not(:disabled) { border-color: var(--pen); }
.opcja.ok { border-color: var(--ok); background: var(--ok-soft); color: var(--ok); font-weight: 600; }
.opcja.zle { border-color: var(--red); background: var(--red-soft); color: var(--red); }
.opcja:disabled { cursor: default; }
.licznik { font: 500 13px/1 var(--f-mono); color: var(--ink-soft); }

/* Korepetytor */
.tutor { position: sticky; top: 16px; display: flex; flex-direction: column; max-height: calc(100vh - 32px); background: var(--card); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.tutor-head { padding: 14px 16px; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; gap: 10px; align-items: start; }
.tutor-head p { font-size: 13px; color: var(--ink-soft); }
.zamknij { display: none; border: 1px solid var(--line); background: var(--card); border-radius: 8px; padding: 4px 10px; cursor: pointer; }
.rozmowa { flex: 1; overflow-y: auto; padding: 14px 16px; display: grid; gap: 10px; align-content: start; min-height: 180px; }
.dymek { padding: 10px 12px; border-radius: 10px; font-size: 15px; line-height: 1.55; max-width: 100%; overflow-wrap: anywhere; display: grid; gap: 6px; }
.dymek.ucz { background: var(--pen-soft); justify-self: end; max-width: 92%; white-space: pre-wrap; }
.dymek.ai { background: var(--paper); border: 1px solid var(--line); }
.dymek.ai ul, .dymek.ai ol { margin: 0; padding-left: 20px; display: grid; gap: 3px; }
.dymek.ai code { font-family: var(--f-mono); font-size: .92em; }
.dymek .md-h { font-weight: 600; }
.dymek.czeka { color: var(--ink-soft); font-style: italic; }
.dymek.blad { border-color: var(--red); color: var(--red); }
.tutor-dol { border-top: 1px solid var(--line); padding: 10px 12px calc(12px + env(safe-area-inset-bottom, 0px)); display: grid; gap: 8px; }
.tutor-dol .chips .chip { font-size: 13px; padding: 5px 10px; }
.pole { display: flex; gap: 8px; align-items: end; }
.pole textarea { min-height: 44px; max-height: 140px; }
.brak-ai { margin: 14px 16px; padding: 12px; border: 1px dashed var(--line); border-radius: 8px; font-size: 14px; color: var(--ink-soft); }
.brak-ai[hidden] { display: none !important; }
.fab { display: none; }

@media (max-width: 1100px) {
  .layout { grid-template-columns: minmax(0, 1fr) 330px; }
  .zad-layout { grid-template-columns: 1fr; }
  .typy { grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); }
}
@media (max-width: 899px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .tutor { position: fixed; left: 0; right: 0; bottom: 0; top: auto; z-index: 20; height: min(82vh, 680px); max-height: none; border-radius: 14px 14px 0 0; transform: translateY(105%); transition: transform .25s ease; box-shadow: 0 -8px 30px rgba(0,0,0,.18); padding-left: env(safe-area-inset-left, 0px); padding-right: env(safe-area-inset-right, 0px); }
  .tutor.otwarty { transform: translateY(0); }
  .zamknij { display: inline-block; }
  .fab { display: inline-flex; position: fixed; z-index: 15; right: max(16px, env(safe-area-inset-right, 0px)); bottom: calc(16px + env(safe-area-inset-bottom, 0px)); border: 0; border-radius: 999px; padding: 13px 18px; background: var(--red); color: #fff; font-weight: 600; box-shadow: 0 6px 18px rgba(0,0,0,.25); cursor: pointer; font-size: 15px; }
}
@media (max-width: 600px) {
  .dzialy { grid-template-columns: none; grid-auto-flow: column; grid-auto-columns: min(78vw, 300px); overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 4px; }
  .dzial { scroll-snap-align: start; }
}
@media (max-width: 480px) {
  .view { padding: 14px; }
  .modul-head { padding: 14px 14px 0; }
  .odp input { width: 120px; }
  .wykres { height: 150px; }
}
@media (prefers-reduced-motion: reduce) { .tutor { transition: none; } }

/* ---------- Logowanie, konto, panel rodzica ---------- */
.logowanie { min-height: 100vh; display: grid; grid-template-columns: minmax(0, 1fr); place-items: center; padding-block: 24px; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.logowanie[hidden], .wrap[hidden], .rodzic[hidden] { display: none !important; }
.log-karta { width: min(400px, 100%); background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 24px; display: grid; gap: 10px; }
.log-karta .eyebrow { font: 500 12px/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); }
.log-karta label { font-weight: 600; font-size: 14px; }
.log-karta input { width: 100%; min-width: 0; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); font-size: 16px; }
.konto { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.btn.maly { padding: 6px 11px; font-size: 14px; text-decoration: none; display: inline-block; }
a.btn { text-decoration: none; }
.rodzic { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 16px; display: grid; gap: 16px; }
#rodzicTresc { display: grid; gap: 18px; }
.rodzic-karta { border: 1px solid var(--line); border-radius: 8px; padding: 14px; display: grid; gap: 12px; background: var(--paper); min-width: 0; }
.rodzic-karta header { display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: baseline; justify-content: space-between; }
.rodzic-tab td:first-child { text-align: left; font-family: var(--f-body); }
.rodzic-tab th:first-child { text-align: left; }
.stan-pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-weight: 600; }
.stan-pill.ok { background: var(--ok-soft); color: var(--ok); }
.stan-pill.srednio { background: var(--hi); color: var(--ink); }
.stan-pill.slabo { background: var(--red-soft); color: var(--red); }
.slupki { display: grid; grid-template-columns: repeat(14, minmax(0, 1fr)); gap: 4px; height: 90px; align-items: end; }
.slupek { height: 100%; display: grid; grid-template-rows: 1fr auto; align-items: end; justify-items: center; gap: 2px; }
.slupek span { width: 100%; min-height: 2px; background: var(--pen); border-radius: 3px 3px 0 0; }
.slupek small { font: 10px/1 var(--f-mono); color: var(--ink-soft); }
.quizy { margin: 0; padding-left: 18px; display: grid; gap: 6px; font-size: 14px; }
.quizy ul { margin: 4px 0 0; padding-left: 18px; color: var(--ink-soft); }
.rodzic-karta .pill { white-space: normal; line-height: 1.35; }
#rodzicTresc { min-width: 0; }
@media (max-width: 480px) {
  .rodzic { padding: 12px; }
  .rodzic-karta { padding: 10px; }
}
.rodzic-tab td:last-child, .rodzic-tab th:last-child { text-align: left; font-family: var(--f-body); }

/* ---------- Dział Wprowadzenie: laboratorium wektorów, przedrostki ---------- */
.wek-plotno { width: 100%; max-width: 560px; aspect-ratio: 1 / 1; height: auto; display: block; margin-inline: auto; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); touch-action: none; cursor: crosshair; }
.wek-pola { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: end; }
.wek-pola fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px 10px; display: flex; gap: 6px; align-items: center; margin: 0; }
.wek-pola legend { font-weight: 600; font-size: 14px; padding: 0 4px; }
.wek-pola label { font-family: var(--f-mono); font-size: 14px; color: var(--ink-soft); }
.wek-pola input[type="number"] { width: 64px; padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); font-family: var(--f-mono); font-size: 16px; }
.wek-pola .suwak { min-width: 200px; }
.wek-wzor { font-family: var(--f-mono); font-size: 14.5px; flex-basis: 100%; overflow-wrap: anywhere; }
.tabela-przedrostki th[scope="row"] { text-align: left; }
.dzial-akcje { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.dzial.powtorka { border-style: dashed; border-color: var(--red); }
.dzial.powtorka.aktywny { box-shadow: inset 0 0 0 1px var(--red); background: var(--red-soft); }
.dzial .btn.maly { justify-self: start; }
.typ.losuj { border-color: var(--red); border-style: dashed; }
.typ.losuj .gw { color: var(--red); font-weight: 700; }