:root{
  --bg:#f5f6f8; --panel:#ffffff; --ink:#1f2430; --muted:#6b7280;
  --line:#e3e6eb; --brand:#2563eb; --brand-d:#1d4ed8;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.5}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
code{background:#eef1f5;padding:1px 5px;border-radius:4px;font-size:.9em}

header{display:flex;justify-content:space-between;align-items:center;
  padding:12px 24px;background:var(--panel);border-bottom:1px solid var(--line)}
.brand{font-weight:700;font-size:1.05rem}
header nav{display:flex;gap:16px;align-items:center}
main{max-width:920px;margin:24px auto;padding:0 20px}
footer{max-width:920px;margin:40px auto;padding:16px 20px;color:var(--muted);
  font-size:.85rem;border-top:1px solid var(--line)}

h1{font-size:1.6rem;margin:.2em 0}
h2{margin-top:1.6em}
.muted{color:var(--muted)}
.small{font-size:.86rem}
.back{display:inline-block;margin-bottom:8px;font-size:.9rem}

.btn{display:inline-block;padding:8px 14px;border-radius:8px;border:1px solid var(--line);
  background:#fff;color:var(--ink);cursor:pointer;font-size:.92rem}
.btn:hover{text-decoration:none;border-color:#c7ccd5}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-d);border-color:var(--brand-d)}
.btn-danger{color:#b91c1c;border-color:#fca5a5}
.btn-danger:hover{background:#fee2e2;border-color:#f87171}
.audio-panel{background:#eff6ff;border-color:#bfdbfe}
.audio-panel audio{width:100%;max-width:560px;margin-top:6px;display:block}
.podpunkty{display:flex;gap:6px;flex-wrap:wrap;margin:.3em 0}
.pp{padding:3px 9px;border-radius:999px;font-size:.86rem;border:1px solid var(--line)}
.pp-ok{background:#dcfce7;border-color:#86efac}
.pp-bad{background:#fee2e2;border-color:#fca5a5}
.btn:disabled{opacity:.5;cursor:not-allowed}

.hero{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px;margin-bottom:8px}
.hero h1{margin-top:0}

.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px}
.card h3{margin:.3em 0}
.card-head{display:flex;justify-content:space-between;align-items:center}
.card-actions{display:flex;gap:8px;margin-top:10px}

.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:.75rem;font-weight:700;color:#fff;background:#888}
.tag-math{background:#7c3aed}.tag-pl{background:#dc2626}.tag-en{background:#0891b2}.tag-unknown{background:#6b7280}
.badge{background:#fde68a;color:#92400e;border-radius:6px;padding:1px 6px;font-size:.78rem}

.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px;margin:14px 0}
.panel .row{display:flex;gap:16px;flex-wrap:wrap;margin:12px 0}
label{display:block;margin:10px 0;font-size:.92rem}
input[type=text],select,input[type=file]{display:block;margin-top:4px;padding:8px;
  border:1px solid var(--line);border-radius:8px;width:100%;max-width:420px;font-size:.95rem;background:#fff}

.page-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap}
.score{text-align:right}
.score-big{font-size:1.8rem;font-weight:800}

.grid{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.grid th,.grid td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;font-size:.92rem}
.grid thead{background:#eef2f7}

.zadanie{background:var(--panel);border:1px solid var(--line);border-left:5px solid var(--line);
  border-radius:10px;padding:14px 16px;margin:14px 0}
.zadanie.ok{border-left-color:#16a34a}
.zadanie.part{border-left-color:#f59e0b}
.zadanie.bad{border-left-color:#dc2626}
.zadanie-head{display:flex;justify-content:space-between;align-items:baseline}
.zadanie-head h3{margin:.2em 0}
.pkt{font-weight:700}
.tresc{margin:.4em 0;white-space:normal}
.opcje{list-style:none;padding-left:0}
.opcje li{padding:3px 8px;border-radius:6px}
.opcje li.correct{background:#dcfce7;font-weight:600}
.klucz{margin-top:8px;padding-top:8px;border-top:1px dashed var(--line)}
.grafiki{display:flex;gap:14px;flex-wrap:wrap;margin-top:10px}
/* pojedyncze figury — wyraźnie większe niż dawniej; klik = pełny rozmiar */
.grafiki img{max-width:480px;max-height:480px;width:auto;height:auto;
  border:1px solid var(--line);border-radius:8px;cursor:zoom-in}
/* składanki (szeroki obraz, np. wiersze A/B/C słuchania, quilling, oś) — do pełnej szerokości */
.grafiki img.wide{max-width:min(100%,900px);max-height:none}
.tekst-zrodlowy{border-top:1px solid var(--line);padding-top:8px;margin-top:8px}
.tekst-zrodlowy h4{margin:.3em 0}
.tekst-zrodlowy .tresc{white-space:pre-wrap;font-size:.93rem;max-height:420px;overflow:auto}

.lbl{font-weight:600;margin:.6em 0 .2em}
.answer{background:#fafafa;border:1px solid var(--line);border-radius:8px;padding:10px;white-space:pre-wrap}
.answer.marked{white-space:pre-wrap}
.notatka{background:#eff6ff;border:1px solid #bfdbfe;border-radius:8px;padding:8px 10px}
details summary{cursor:pointer;color:var(--brand);margin:.4em 0}

/* zaznaczanie błędów */
mark.err-spelling{background:#ffd2d2;color:#b00000;border-radius:3px;padding:0 1px}
mark.err-grammar{background:#ffe1c2;color:#9a4a00;border-radius:3px;padding:0 1px}
mark.err-punctuation{background:#d8e8ff;color:#103a87;border-radius:3px;padding:0 1px}
mark.err-stylistic{background:#d9f3d9;color:#1d6b1d;border-radius:3px;padding:0 1px}
.legend{display:flex;gap:16px;flex-wrap:wrap;margin:10px 0;font-size:.85rem}
.legend .lg mark{padding:0 4px}

.flash{padding:10px 14px;border-radius:8px;margin:10px 0;font-size:.92rem}
.flash-ok{background:#dcfce7;border:1px solid #86efac}
.flash-error{background:#fee2e2;border:1px solid #fca5a5}
.flash-warn{background:#fef9c3;border:1px solid #fde047}

/* panel ucznia */
.card-link{display:block;color:inherit}
.card-link:hover{text-decoration:none;border-color:#c7ccd5;box-shadow:0 2px 10px rgba(0,0,0,.05)}
.card-link h3{color:var(--ink)}

.opt-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:16px 0}
.opt-card{display:block;background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:22px;color:inherit;transition:.12s}
.opt-card:hover{text-decoration:none;border-color:var(--brand);box-shadow:0 4px 16px rgba(37,99,235,.10);transform:translateY(-1px)}
.opt-card h3{margin:.3em 0}
.opt-emoji{font-size:2rem}

.highlight-best{border-left:5px solid #f59e0b}
.highlight-last{border-left:5px solid var(--brand)}

/* formularz online */
.pola{margin-top:10px}
textarea{display:block;width:100%;max-width:640px;margin-top:6px;padding:10px;border:1px solid var(--line);
  border-radius:8px;font:inherit;font-size:.95rem;background:#fff;resize:vertical}
.subq{display:flex;align-items:center;gap:8px;max-width:480px}
.subq .sub{min-width:48px;font-weight:600}
.sub{font-weight:600;margin:.5em 0 .2em}
.opts{display:flex;flex-direction:column;gap:4px;margin:.3em 0 .8em}
.opt{display:flex;align-items:baseline;gap:8px;margin:0;padding:5px 8px;border-radius:8px;cursor:pointer}
.opt:hover{background:#f1f5ff}
.opt input{margin:0}

/* panel nauczyciela */
.inline-form{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:0}
.inline-form input[type=text]{margin:0;max-width:320px}

.stat-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin:12px 0}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px;text-align:center}
.stat-val{font-size:1.7rem;font-weight:800;color:var(--brand)}
.stat-lbl{font-size:.84rem;color:var(--muted);margin-top:2px}

.filtry{display:flex;gap:14px;flex-wrap:wrap;align-items:center;margin:8px 0 12px}
.filtr-sub{display:flex;gap:6px;flex-wrap:wrap}
.chip{padding:5px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;
  cursor:pointer;font-size:.86rem;color:var(--ink)}
.chip:hover{border-color:#c7ccd5}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
#egz-szukaj{margin:0;max-width:280px}

.egz-lista{display:flex;flex-direction:column;gap:4px;max-height:340px;overflow:auto;
  border:1px solid var(--line);border-radius:10px;padding:8px}
.egz-opt{display:flex;align-items:center;gap:8px}