/* Matematyka (repo matmoza) — wygląd Lingozy (kremowe tło, pastelowe karty 3D, Libre Baskerville + Jost, bez kursywy)
   z delikatnym akcentem matematyki: znaki + − × ÷ na kartach, kratka zeszytu w tle ćwiczeń, cyfry tabelaryczne. */
@font-face { font-family: 'Jost'; src: url('fonts/Jost.ttf') format('truetype'); font-weight: 100 900; font-display: swap; }
@font-face { font-family: 'Libre Baskerville'; src: url('fonts/LibreBaskerville.ttf') format('truetype'); font-weight: 400 700; font-display: swap; }

:root {
  --tlo: #F5F2EA; --karta: #FCFAF5; --tusz: #1D1C22; --szary: #77736B; --linia: #E5E0D4; --oliwka: #A0986A;
  --lila: #C9C5F7; --rozowy: #F6C7EE; --zolty: #F4EE90; --mietowy: #C5EFDC; --zielony: #2F9B5A; --brzoskwinia: #F9D7AF;
  --niebieski: #C0E4F5; --krem: #F1E7BF;
  --ok: #2F9B5A; --ok-tlo: #DDF4E6; --zle: #D6455D; --zle-tlo: #FBE1E5;
  --r: 22px; --cien: 0 1px 0 rgba(29,28,34,.04), 0 10px 26px -14px rgba(29,28,34,.28);
  --dol: env(safe-area-inset-bottom, 0px); --gora: env(safe-area-inset-top, 0px);
  /* akcent matematyki: rozsypane znaki działań (biała kreska, jak zawijas na kartach Lingozy) */
  --znaki: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 140' fill='none' stroke='white' stroke-opacity='.6' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M150 14v22M139 25h22'/%3E%3Cpath d='M101 50l14 14M115 50l-14 14'/%3E%3Cpath d='M160 80h22'/%3E%3Ccircle cx='171' cy='71' r='1.6' fill='white'/%3E%3Ccircle cx='171' cy='89' r='1.6' fill='white'/%3E%3Cpath d='M123 104h20M123 112h20'/%3E%3Cpath d='M180 30h12' stroke-opacity='.5'/%3E%3C/svg%3E");
  --kratka: linear-gradient(rgba(29,28,34,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(29,28,34,.045) 1px, transparent 1px);
  color-scheme: light;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--tlo); color: var(--tusz); font: 17px/1.45 Jost, -apple-system, system-ui, sans-serif; min-height: 100dvh; touch-action: manipulation; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
.serif { font-family: 'Libre Baskerville', Baskerville, Georgia, serif; font-weight: 400; letter-spacing: -.015em; }
em, i { font-style: normal; }
.maly, small { font-size: 13px; color: var(--szary); }
.ladowanie { text-align: center; padding: 40vh 16px; color: var(--szary); }

.ekran { max-width: 620px; margin: 0 auto; padding: calc(var(--gora) + 16px) 16px calc(var(--dol) + 40px); }
.logo { font-size: 24px; text-align: center; padding: 10px 0; }
.logo em, .tytul em, .profile-wybor h1 em { color: var(--oliwka); }

/* ikony */
.ik { display: inline-grid; place-items: center; line-height: 0; }
.ik svg { width: 20px; height: 20px; }
.btn .ik svg, .chip .ik svg { width: 19px; height: 19px; }

/* nagłówek ekranu głównego */
.naglowek { display: flex; align-items: center; gap: 10px; }
.avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--rozowy); display: grid; place-items: center; font-size: 20px; }
.naglowek-txt { flex: 1; display: flex; flex-direction: column; line-height: 1.15; }
.naglowek-txt b { font-weight: 500; }
.ikona-btn { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--linia); background: var(--karta); display: grid; place-items: center; cursor: pointer; flex: none; }
.tytul { font-size: clamp(34px, 9.6vw, 46px); line-height: 1.08; margin: 18px 0 16px; }
.podtytul { color: var(--szary); margin: -4px 0 16px; }
.sekcja { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--szary); font-weight: 500; margin: 22px 2px 10px; }

/* górny pasek: „Wróć” zawsze w lewym górnym rogu — ten sam przycisk co na ogarnijmaterial.pl */
.pasek { display: flex; align-items: center; justify-content: space-between; min-height: 48px; gap: 10px; margin-bottom: 8px; }
.pasek-prawe { display: flex; align-items: center; gap: 10px; }
.wroc { display: inline-flex; align-items: center; gap: 4px; height: 44px; padding: 0 16px 0 10px; border-radius: 22px; flex: none; cursor: pointer;
  background: var(--karta); border: 1px solid var(--linia); color: var(--tusz); font-size: 16px; font-weight: 500; line-height: 1; box-shadow: 0 3px 0 var(--linia); }
.wroc .ik svg { width: 22px; height: 22px; }
.wroc:active, .okragly:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--linia); }
.okragly { width: 44px; height: 44px; border-radius: 50%; background-color: var(--karta); border: 1px solid var(--linia); display: grid; place-items: center; box-shadow: 0 3px 0 var(--linia); flex: none; }
.okragly.inicjal { font-size: 19px; line-height: 1; }
.przedmiot-etykieta { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--szary); font-weight: 500; margin: 14px 2px 0; }

/* kolory kart (jak w Lingozie) */
.kolor-lila { background-color: var(--lila); --tlo-karty: var(--lila); --brzeg: #A7A0EA; }
.kolor-rozowy { background-color: var(--rozowy); --tlo-karty: var(--rozowy); --brzeg: #DFA2D3; }
.kolor-zolty { background-color: var(--zolty); --tlo-karty: var(--zolty); --brzeg: #D6CD5C; }
.kolor-mietowy { background-color: var(--mietowy); --tlo-karty: var(--mietowy); --brzeg: #98D6BA; }
.kolor-brzoskwinia { background-color: var(--brzoskwinia); --tlo-karty: var(--brzoskwinia); --brzeg: #E5B57B; }
.kolor-niebieski { background-color: var(--niebieski); --tlo-karty: var(--niebieski); --brzeg: #92C6E0; }
.kolor-krem { background-color: var(--krem); --tlo-karty: var(--krem); --brzeg: #D8CA92; }

/* bąbel ze znakiem działania — matematyczny odpowiednik ilustracji działu w Lingozie */
.kp-emoji, .profil-avatar, .blok-nr { flex: none; display: grid; place-items: center; border-radius: 50%;
  background-image: radial-gradient(circle at 35% 28%, rgba(255,255,255,.98), rgba(255,255,255,.62) 55%, rgba(255,255,255,.34) 100%);
  box-shadow: inset 0 -3px 6px rgba(29,28,34,.08), inset 0 2px 1px rgba(255,255,255,.9), 0 8px 14px -8px rgba(29,28,34,.45); }
.kp-emoji { width: 54px; height: 54px; font-size: 27px; line-height: 1; }
.znak-mat { color: var(--tusz); text-shadow: 0 2px 0 rgba(255,255,255,.8); padding-bottom: 2px; }

/* karty zestawów */
.lista-pakietow { display: flex; flex-direction: column; gap: 14px; }
.karta-pakietu { position: relative; display: block; padding: 16px 18px; border-radius: var(--r);
  background-image: var(--znaki), linear-gradient(180deg, rgba(255,255,255,.4), rgba(255,255,255,0) 45%);
  background-repeat: no-repeat; background-position: right -14px top -6px, 0 0; background-size: 56% auto, auto;
  box-shadow: inset 0 1.5px 0 rgba(255,255,255,.75), 0 5px 0 var(--brzeg, rgba(0,0,0,.12)), 0 18px 24px -18px rgba(29,28,34,.5);
  transition: transform .15s, box-shadow .15s; }
.karta-pakietu:active { transform: translateY(4px); box-shadow: inset 0 1.5px 0 rgba(255,255,255,.75), 0 1px 0 var(--brzeg, rgba(0,0,0,.12)), 0 8px 14px -12px rgba(29,28,34,.5); }
.kp-gora { display: flex; gap: 14px; align-items: center; }
.kp-txt { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; min-width: 0; }
.kp-tytul { font-size: 21px; line-height: 1.18; }
.kp-opis { font-size: 14px; opacity: .8; margin: 10px 0 0; max-width: 88%; }
.kp-dol { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 10px; }
.kp-dol small { color: inherit; opacity: .75; }
.termin { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; background: rgba(255,255,255,.62); border-radius: 999px; padding: 2px 10px; font-weight: 500; }
.termin.pilne { background: var(--tusz); color: #fff; }

/* nagłówek zestawu */
.naglowek-dzialu { position: relative; border-radius: var(--r); padding: 22px 20px 20px; margin-bottom: 16px; min-height: 120px;
  background-image: var(--znaki), linear-gradient(180deg, rgba(255,255,255,.42), rgba(255,255,255,0) 45%);
  background-repeat: no-repeat; background-position: right -10px top 0, 0 0; background-size: 52% auto, auto;
  box-shadow: inset 0 1.5px 0 rgba(255,255,255,.75), 0 6px 0 var(--brzeg, rgba(0,0,0,.12)), 0 22px 30px -20px rgba(29,28,34,.5); }
.naglowek-dzialu h1 { font-size: 30px; line-height: 1.12; margin: 6px 0 8px; padding-right: 70px; }
.naglowek-dzialu .kat-etykieta { display: block; padding-right: 70px; }
.naglowek-dzialu p { margin: 0; opacity: .85; }
.nagl-znak { position: absolute; top: 14px; right: 16px; width: 64px; height: 64px; font-size: 32px; }
.kat-etykieta { text-transform: uppercase; letter-spacing: .08em; font-size: 11px; color: inherit; opacity: .7; }
.np-staty { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 12px; font-size: 14px; }
.np-staty b { font-size: 18px; font-weight: 500; }

/* duży przycisk */
.cta { width: 100%; display: flex; align-items: center; gap: 12px; padding: 18px 20px; border: 0; border-radius: var(--r); background: var(--tusz); color: #fff; text-align: left; cursor: pointer; box-shadow: var(--cien); margin-bottom: 6px; }
.cta-txt { flex: 1; display: flex; flex-direction: column; }
.cta-txt b { font-size: 20px; font-weight: 500; }
.cta-txt small { color: #CFCBC2; }
.cta-strzalka { width: 42px; height: 42px; border-radius: 50%; background: var(--zolty); color: var(--tusz); display: grid; place-items: center; }
.cta:active { transform: scale(.98); }

/* lista bloków / wyników */
.lista-pozycji { list-style: none; padding: 0; margin: 0; background: var(--karta); border-radius: 18px; border: 1px solid var(--linia); text-align: left; width: 100%; }
.pozycja { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-bottom: 1px solid var(--linia); }
.pozycja:last-child { border-bottom: 0; }
.pozycja.klik { cursor: pointer; transition: background-color .12s; }
.pozycja.klik:active { background: rgba(255,255,255,.95); }
.blok-nr { width: 38px; height: 38px; font-size: 17px; }
.poz-txt { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.poz-txt b { font-weight: 500; }
.poz-status { font-size: 12px; padding: 3px 10px; border-radius: 10px; background: var(--linia); color: var(--szary); white-space: nowrap; font-variant-numeric: tabular-nums; }
.poz-status.uczy { background: var(--zolty); color: var(--tusz); }
.poz-status.zna { background: rgba(255,255,255,.7); color: var(--tusz); }
.poz-status.opan { background: var(--zielony); color: #fff; }
.bledy .pozycja { border-left: 3px solid var(--zle); }
.bledy small { display: block; margin-top: 2px; }
.bledy .dobra { color: var(--ok); font-weight: 500; }
.mat { font-variant-numeric: tabular-nums; }

/* przyciski */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 50px; padding: 12px 20px; border-radius: 16px; border: 0; cursor: pointer; font-size: 16px; font-weight: 500; text-align: center; }
.btn:disabled { opacity: .45; cursor: default; }
.btn.glowny { background: var(--tusz); color: #fff; }
.btn.jasny { background: var(--karta); border: 1px solid var(--linia); }
.btn.zielony { background: var(--ok); color: #fff; }
.btn.czerwony { background: var(--zle); color: #fff; }
.btn.szeroki { width: 100%; }
.btn:active:not(:disabled) { transform: scale(.98); }
.przyciski { display: flex; gap: 10px; flex-wrap: wrap; margin: 4px 0 8px; }
.przyciski .btn { flex: 1; min-width: 130px; }
.przyciski.kolumna { flex-direction: column; width: 100%; margin-top: 18px; }
.chip { display: inline-flex; align-items: center; gap: 4px; border: 1px solid var(--linia); background: var(--karta); border-radius: 999px; padding: 6px 14px; cursor: pointer; font-size: 14px; }
.chip.akt { background: var(--tusz); color: #fff; border-color: var(--tusz); }

/* wybór profilu — kafelki „rzucone” nierówno, bąbel z literą wystaje ponad kafelek */
.profile-wybor h1 { font-size: 38px; line-height: 1.1; text-align: center; margin: 16px 0 6px; }
.profile-siatka { display: grid; grid-template-columns: 1fr 1fr; gap: 26px 14px; padding: 44px 4px 30px; align-items: start; }
.profil-kafel { position: relative; border: 0; display: flex; flex-direction: column; align-items: center; gap: 4px; cursor: pointer;
  padding: 62px 12px 18px; transform: rotate(var(--obr, 0deg));
  background-image: var(--znaki), linear-gradient(180deg, rgba(255,255,255,.42), rgba(255,255,255,0) 45%);
  background-repeat: no-repeat; background-size: 66% auto, auto; background-position: right -22px top -4px, 0 0;
  box-shadow: inset 0 1.5px 0 rgba(255,255,255,.75), 0 5px 0 var(--brzeg, rgba(0,0,0,.12)), 0 18px 24px -18px rgba(29,28,34,.5);
  transition: transform .15s; }
.profil-kafel:nth-child(1) { --obr: -3deg; border-radius: 34px 24px 28px 14px; }
.profil-kafel:nth-child(2) { --obr: 2.4deg; margin-top: 34px; border-radius: 24px 34px 14px 30px; }
.profil-kafel:active { transform: rotate(0deg) scale(.96); }
.profil-avatar { position: absolute; top: -34px; left: 50%; width: 84px; height: 84px; font-size: 40px; background-color: var(--karta);
  transform: translateX(-50%) rotate(calc(var(--obr, 0deg) * -2)); }
.profil-kafel b { font-family: 'Libre Baskerville', Georgia, serif; font-weight: 400; font-size: 21px; letter-spacing: -.01em; }
.profil-kafel small { background: rgba(255,255,255,.62); border-radius: 999px; padding: 2px 11px; margin-top: 4px; color: rgba(29,28,34,.7); }

/* ---------------- lekcja (ćwiczenie) ---------------- */
body.w-lekcji { overflow: hidden; }
.lekcja { position: fixed; inset: 0; z-index: 50; display: flex; flex-direction: column; padding-top: var(--gora);
  background-color: var(--tlo-karty, var(--tlo));
  /* akcent: kratka z zeszytu do matematyki, ledwo widoczna */
  background-image: linear-gradient(180deg, rgba(255,255,255,.4), rgba(255,255,255,0) 45%), var(--kratka);
  background-size: auto, 24px 24px, 24px 24px; }
.lekcja-gora { display: flex; align-items: center; gap: 12px; padding: 12px 16px 8px; max-width: 620px; width: 100%; margin: 0 auto; min-height: 60px; }
.postep { flex: 1; height: 14px; border-radius: 8px; background: rgba(255,255,255,.55); overflow: hidden; }
.postep-wew { height: 100%; border-radius: 8px; background: linear-gradient(90deg, #8AD9A8, var(--ok)); transition: width .4s; }
.licznik { font-size: 13px; color: rgba(29,28,34,.6); font-variant-numeric: tabular-nums; min-width: 28px; text-align: right; }
.lekcja-tytul { max-width: 620px; width: 100%; margin: 0 auto; padding: 0 18px; font-size: 18px; opacity: .75; }
.cw-pole { flex: 1; min-height: 0; overflow-y: auto; -webkit-overflow-scrolling: touch; padding: 8px 16px 20px; max-width: 620px; width: 100%; margin: 0 auto; }
.cw-pole > * { animation: pojaw .28s ease both; }
@keyframes pojaw { from { opacity: 0; transform: translateY(8px); } }
.cw-polecenie { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: rgba(29,28,34,.65); margin: 6px 2px 12px; font-weight: 500; }
.cw-nr { font-variant-numeric: tabular-nums; letter-spacing: 0; white-space: nowrap; flex: none; }

/* karta z działaniem — biała, z brzegiem 3D jak krok gramatyki w Lingozie */
.zadanie-karta { background: rgba(255,255,255,.9); border-radius: 30px; padding: 22px 14px 16px; min-height: 24dvh; display: flex; flex-direction: column; justify-content: center;
  box-shadow: inset 0 1.5px 0 rgba(255,255,255,.9), 0 6px 0 var(--brzeg, rgba(0,0,0,.12)), 0 22px 30px -20px rgba(29,28,34,.45);
  transition: background-color .2s; }
.zadanie-karta.ok { background: var(--ok-tlo); }
.zadanie-karta.zle { background: var(--zle-tlo); }
.tresc { font-size: 22px; line-height: 1.4; margin: 0 0 10px; }
.etykieta { font-size: 17px; margin: 0 0 6px; }
.dzialanie { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; column-gap: .26em; row-gap: 8px;
  font-size: clamp(46px, 13.5vw, 68px); font-weight: 500; font-variant-numeric: tabular-nums lining-nums; padding: 24px 0 12px; text-align: center; white-space: pre-wrap; }
.dzialanie.dlugie { font-size: clamp(38px, 11vw, 56px); }
.dzialanie.bardzo-dlugie { font-size: clamp(29px, 8.6vw, 42px); }
.dzialanie.samo { padding-top: 4px; }
.zadanie-karta.zle { min-height: 0; }
.zadanie-karta.zle .dzialanie { font-size: clamp(24px, 7.5vw, 32px); padding: 4px 0 0; }
.zadanie-karta.zle .tresc { font-size: 16px; }
.jednostka { font-size: .55em; color: var(--szary); }
.info { min-height: 22px; text-align: center; font-weight: 500; margin: 6px 0 0; font-size: 15px; }
.info.podpowiedz { color: var(--zle); }

/* ułamki, potęgi, okienka */
.ul { display: inline-flex; flex-direction: column; align-items: center; vertical-align: middle; font-size: .74em; line-height: 1.05; margin: 0 .06em; }
.ul > :first-child { border-bottom: .07em solid currentColor; padding: 0 .14em .05em; }
.ul > :last-child { padding: .05em .14em 0; }
.mieszana { display: inline-flex; align-items: center; gap: .06em; }
sup { font-size: .55em; line-height: 0; }
.kwadrat { display: inline-block; width: .85em; height: .85em; border: 2px solid currentColor; border-radius: 6px; vertical-align: middle; opacity: .6; }
.pole { display: inline-grid; place-items: center; min-width: 1.6em; height: 1.36em; padding: 0 .18em; margin: 0 .04em;
  border: 2px solid var(--linia); border-bottom-width: 4px; border-radius: 14px; background: var(--karta); font: inherit; cursor: pointer; line-height: 1; }
.pole.aktywne { border-color: #8AA8F0; background: #EAF0FF; }
.pole.aktywne.puste::after { content: ''; width: 3px; height: .75em; border-radius: 2px; background: #5B7FE0; animation: kursor 1s steps(1) infinite; }
.zadanie-karta.ok .pole { border-color: var(--ok); background: #fff; color: var(--ok); }
.zadanie-karta.zle .pole { border-color: var(--zle); background: #fff; color: var(--zle); text-decoration: line-through; }
.wpis-ulamek { display: inline-flex; align-items: center; gap: .1em; }
.ul.wpis { font-size: 1em; gap: .16em; }
.ul.wpis > :first-child, .ul.wpis > :last-child { padding: 0 .14em; }
.ul.wpis > .pole { min-width: 1.5em; height: 1.16em; border-radius: 12px; border-bottom-width: 4px; border-bottom-style: solid; border-bottom-color: var(--linia); }
.ul.wpis > .pole.aktywne { border-color: #8AA8F0; }
.ul.wpis::after { content: ''; order: 1; width: 100%; height: 3px; border-radius: 2px; background: currentColor; }
.ul.wpis > .pole:last-child { order: 2; }
.pole.cale { min-width: 1.15em; }
.pole.cale.puste:not(.aktywne) { opacity: .45; border-style: dashed; }
.wybor-pole { cursor: default; min-width: 1.2em; border-style: dashed; }
@keyframes kursor { 50% { opacity: 0; } }

/* stopka lekcji: klawiatura + przycisk; po odpowiedzi zielona albo czerwona */
.stopka { flex: none; padding: 12px 16px calc(var(--dol) + 14px); background: var(--tlo-karty, var(--tlo)); border-top: 1px solid rgba(29,28,34,.08); display: flex; flex-direction: column; gap: 10px; }
.stopka > * { max-width: 588px; width: 100%; margin: 0 auto; }
.stopka.ok { background: var(--ok-tlo); border-color: transparent; min-height: 120px; justify-content: center; }
.stopka.zle { background: var(--zle-tlo); border-color: transparent; }
.stopka-tytul { display: flex; align-items: center; gap: 6px; font-size: 20px; font-weight: 600; }
.stopka.ok .stopka-tytul { color: var(--ok); }
.stopka.zle .stopka-tytul { color: var(--zle); font-size: 18px; }
.stopka-tytul .ik svg { width: 24px; height: 24px; }
.seria { margin-left: auto; font-size: 13px; font-weight: 500; background: #fff; border-radius: 999px; padding: 3px 10px; color: var(--ok); }
.stopka .przyciski { margin: 0; }

.klawiatura { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
/* klawiatura jak w grach „Ucz się sprytniej” (Rachmistrz, Tabliczka): kremowy klawisz z czarnym konturem,
   krzywe „wycięte nożyczkami” rogi i przesunięty kolorowy cień; przy dotknięciu klawisz wsuwa się na swój cień */
.klawiatura { --atrament: #1F1B17; --marker: #F5A524; --beż: #E6DDCE; --akcent: #1D7A5F; gap: 10px 12px; padding: 0 3px 3px 0; }
.klawisz { height: clamp(58px, 8.4dvh, 78px); border: 2px solid var(--atrament); background: #FFFDF8; color: var(--atrament);
  border-radius: 255px 18px 225px 18px / 18px 225px 18px 255px;
  box-shadow: 4px 4px 0 0 var(--marker), 4px 4px 0 2px var(--atrament);
  font-family: 'Baloo 2', Jost, system-ui, sans-serif; font-size: clamp(30px, 4.4dvh, 38px); font-weight: 800; line-height: 1; font-variant-numeric: tabular-nums;
  cursor: pointer; user-select: none; -webkit-user-select: none; display: grid; place-items: center; padding: 4px 0 0;
  transition: transform .05s ease-out, box-shadow .05s ease-out; }
.klawisz:nth-child(3n+2) { border-radius: 18px 225px 18px 255px / 255px 18px 225px 18px; }
.klawisz:nth-child(3n) { border-radius: 225px 18px 255px 18px / 18px 255px 18px 225px; }
.klawisz:active, .klawisz.wcisniety { transform: translate(4px, 4px); box-shadow: 0 0 0 0 var(--marker), 0 0 0 2px var(--atrament); }
.klawisz[data-k="przecinek"], .klawisz[data-k="kasuj"], .klawisz[data-k="dalej"], .klawisz[data-k="minus"] { box-shadow: 4px 4px 0 0 var(--beż), 4px 4px 0 2px var(--atrament); }
.klawisz[data-k="przecinek"]:active, .klawisz[data-k="kasuj"]:active, .klawisz[data-k="dalej"]:active, .klawisz[data-k="minus"]:active,
.klawisz.wcisniety[data-k] { box-shadow: 0 0 0 0 var(--beż), 0 0 0 2px var(--atrament); }
.klawisz .ik svg { width: 30px; height: 30px; stroke-width: 2.4; }
.krazek { display: contents; }
.stopka .btn.sprawdz { min-height: 60px; border: 2px solid #1F1B17; background: #FFFDF8; color: #1F1B17; font-family: 'Baloo 2', Jost, sans-serif; font-weight: 800; font-size: 22px;
  border-radius: 255px 18px 225px 18px / 18px 225px 18px 255px; box-shadow: 4px 4px 0 0 #1D7A5F, 4px 4px 0 2px #1F1B17; margin: 0 4px 6px 0; width: calc(100% - 4px);
  transition: transform .05s, box-shadow .05s; padding-top: 6px; }
.stopka .btn.sprawdz:active, .stopka .btn.sprawdz.wcisniety { transform: translate(4px, 4px); box-shadow: 0 0 0 0 #1D7A5F, 0 0 0 2px #1F1B17; }

.opcje { display: flex; flex-direction: column; gap: 10px; }
.opcje.znaki { flex-direction: row; }
.opcja { flex: 1; display: flex; align-items: center; justify-content: center; gap: 12px; padding: 14px 16px; border-radius: 18px; border: 2px solid transparent; background: var(--karta); cursor: pointer; font-size: 19px;
  box-shadow: 0 6px 0 var(--brzeg, #D9D2C2), 0 12px 16px -12px rgba(29,28,34,.4); margin-bottom: 6px; transition: transform .06s, box-shadow .06s; }
.opcja:active, .opcja.wcisniety { transform: translateY(5px); box-shadow: 0 1px 0 var(--brzeg, #D9D2C2); }
.opcje.znaki .opcja { font-size: 38px; padding: 8px; min-height: 76px; font-family: 'Libre Baskerville', Georgia, serif; }
.opcja.ok { border-color: var(--ok); background: var(--ok-tlo); }
.opcja.zle { border-color: var(--zle); background: var(--zle-tlo); }

/* wstęp do bloku — jak lekcja gramatyki w Lingozie */
.gram-lekcja { display: flex; flex-direction: column; gap: 10px; padding-top: 6px; }
.wstep-tytul { font-size: 32px; line-height: 1.12; margin: 0; }
.wstep-polecenie { margin: 0 0 6px; font-size: 18px; }
.gram-krok { position: relative; border-radius: 28px; padding: 20px 18px 18px; background: rgba(255,255,255,.88);
  box-shadow: inset 0 1.5px 0 rgba(255,255,255,.9), 0 6px 0 var(--brzeg, rgba(0,0,0,.12)), 0 22px 30px -20px rgba(29,28,34,.45); }
.gram-klucz { display: inline-block; font-size: 22px; line-height: 1.1; background: var(--tlo-karty); border-radius: 14px; padding: 6px 14px 8px; margin-bottom: 12px; }
.gram-tekst { font-size: 18px; line-height: 1.45; margin: 0 0 10px; }
.gram-tekst b { background: var(--zolty); border-radius: 6px; padding: 0 4px; font-weight: 500; }
.gram-przyklad { display: flex; gap: 12px; align-items: center; background: var(--tlo); border-radius: 18px; padding: 12px 14px; margin-top: 6px; }
.gp-znak { width: 40px; height: 40px; flex: none; border-radius: 50%; background: var(--zolty); display: grid; place-items: center; font-size: 22px; }
.gp-linie { font-size: 19px; line-height: 1.5; font-variant-numeric: tabular-nums; }

/* poprawka po błędzie */
.poprawka { margin-top: 16px; background: rgba(255,255,255,.92); border-radius: 24px; padding: 16px; box-shadow: 0 5px 0 rgba(29,28,34,.07), 0 18px 24px -18px rgba(29,28,34,.4); }
.twoja { margin: 0 0 10px; color: var(--zle); font-weight: 500; }
.twoja s { text-decoration-thickness: 2px; }
.uwaga { font-size: 15px; background: var(--krem); border-radius: 12px; padding: 8px 12px; margin: 0 0 10px; }
.ramka-poprawna { border-radius: 18px; padding: 10px 14px 12px; background: var(--ok-tlo); color: var(--ok); }
.rownanie { font-size: clamp(27px, 8.5vw, 40px); font-weight: 500; font-variant-numeric: tabular-nums; text-align: center; color: var(--tusz); }
.poprawka .sekcja { margin-top: 16px; }
.kroki { margin: 0; padding-left: 1.4em; font-size: 17px; }
.kroki li { margin-bottom: 7px; font-variant-numeric: tabular-nums; }
.kroki li::marker { color: var(--oliwka); font-weight: 600; }
.wraca { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--szary); margin: 12px 0 0; }
.wraca .ik svg { width: 16px; height: 16px; }

/* koniec bloku i podsumowanie */
.podsum { text-align: center; display: flex; flex-direction: column; gap: 10px; align-items: center; padding-top: 18px; }
.podsum h2 { font-size: 28px; line-height: 1.15; margin: 0; }
.wynik-duzy { font-size: 64px; line-height: 1; font-variant-numeric: tabular-nums; }
.gwiazdki { letter-spacing: 2px; font-size: 15px; color: #E9B400; white-space: nowrap; }
.gwiazdki.duze { font-size: 38px; letter-spacing: 6px; text-shadow: 0 3px 0 rgba(29,28,34,.1); }
.gw-puste { color: rgba(29,28,34,.18); }
.podsum-kafle { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; width: 100%; margin-top: 4px; }
.kafel { border-radius: 18px; padding: 12px; display: flex; flex-direction: column; gap: 2px; text-align: left; box-shadow: 0 4px 0 rgba(29,28,34,.07); }
.kafel b { font-size: 26px; font-weight: 600; font-variant-numeric: tabular-nums; }
.kafel small { color: rgba(29,28,34,.65); }
.kafel.bialy { background: rgba(255,255,255,.8); }
.ocena-szkolna { display: flex; align-items: center; gap: 14px; background: rgba(255,255,255,.85); border-radius: 22px; padding: 10px 18px 10px 10px; box-shadow: 0 5px 0 var(--brzeg, rgba(0,0,0,.1)); }
.ocena-cyfra { width: 62px; height: 62px; border-radius: 50%; background: var(--zolty); display: grid; place-items: center; font-size: 36px; }
.ocena-opis { display: flex; flex-direction: column; text-align: left; }
.ocena-opis b { font-size: 20px; font-weight: 600; }
.kafel.zolty { background: var(--zolty); } .kafel.mietowy { background: var(--mietowy); } .kafel.rozowy { background: var(--rozowy); }
.podsum .sekcja { align-self: flex-start; margin-bottom: 0; }
.bez-bledow { font-weight: 500; color: var(--ok); }
.status { min-height: 0; margin: 0; font-weight: 500; color: var(--ok); }
.kopiuj { width: 100%; min-height: 160px; margin-top: 6px; border: 1px solid var(--linia); border-radius: 14px; padding: 10px; background: var(--karta); }

/* ustawienia */
.profil-gora { display: flex; align-items: center; gap: 14px; margin: 8px 0; }
.profil-gora h1 { font-size: 33px; margin: 0; line-height: 1.1; }
.profil-duzy-avatar { width: 64px; height: 64px; border-radius: 50%; background-color: var(--rozowy); display: grid; place-items: center; font-size: 30px; }
.ust { background: var(--karta); border: 1px solid var(--linia); border-radius: var(--r); padding: 4px 16px 14px; margin-top: 14px; }
.ust .sekcja { margin-top: 14px; }
.wiersz { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--linia); }
.wiersz:last-child { border-bottom: 0; }
input.pole { display: block; width: 100%; height: auto; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--linia); background: var(--tlo); margin: 6px 0 10px; cursor: text; font-size: 16px; }

/* własne okienko (jak w Lingozie: wysuwane od dołu) */
.okno-tlo { position: fixed; inset: 0; z-index: 90; background: rgba(29,28,34,.32); backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px); opacity: 0; transition: opacity .2s; }
.okno-tlo.wid { opacity: 1; }
.okno { position: fixed; left: 12px; right: 12px; bottom: calc(var(--dol) + 12px); z-index: 91; max-width: 460px; margin: 0 auto; background: var(--karta);
  border-radius: 30px; padding: 26px 22px 20px; text-align: center; box-shadow: 0 6px 0 var(--linia), 0 30px 60px -20px rgba(29,28,34,.45);
  transform: translateY(120%); transition: transform .28s cubic-bezier(.2,.9,.3,1.1); }
.okno.wid { transform: none; }
.okno-tytul { font-size: 24px; line-height: 1.2; margin-bottom: 6px; }
.okno-tekst { color: var(--szary); margin: 0 0 18px; font-size: 16px; }
.okno-przyciski { display: flex; gap: 10px; }
.okno-przyciski .btn { flex: 1; }

/* klawiatura z nawiasami (okresy) ma 5 rzędów — niższe klawisze, żeby działanie zostało widoczne */
.klawiatura.piec-rzedow .klawisz { height: clamp(46px, 6.4dvh, 60px); font-size: clamp(26px, 3.8dvh, 32px); }

@media (max-height: 700px) {
  .klawisz { height: 54px; }
  .dzialanie { padding: 8px 0 2px; }
  .lekcja-tytul { display: none; }
}
@media (min-width: 700px) {
  .tytul { font-size: 52px; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

/* znaczek z inicjałem w kolorze osoby (jak na ogarnijmaterial.pl) */
.okragly.inicjal[class*="kolor-"], .profil-duzy-avatar[class*="kolor-"] { background-color: var(--tlo-karty); }