@font-face { font-family: "PT Serif"; font-weight: 400; font-style: normal; font-display: swap; src: url("fonts/pt-serif-latin-400-normal.woff2") format("woff2"); unicode-range: U+0000-00FF, U+2000-206F, U+2190-2193, U+2212; }
@font-face { font-family: "PT Serif"; font-weight: 400; font-style: normal; font-display: swap; src: url("fonts/pt-serif-latin-ext-400-normal.woff2") format("woff2"); unicode-range: U+0100-02AF; }
@font-face { font-family: "PT Serif"; font-weight: 700; font-style: normal; font-display: swap; src: url("fonts/pt-serif-latin-700-normal.woff2") format("woff2"); unicode-range: U+0000-00FF, U+2000-206F, U+2190-2193, U+2212; }
@font-face { font-family: "PT Serif"; font-weight: 700; font-style: normal; font-display: swap; src: url("fonts/pt-serif-latin-ext-700-normal.woff2") format("woff2"); unicode-range: U+0100-02AF; }
@font-face { font-family: "PT Serif"; font-weight: 400; font-style: italic; font-display: swap; src: url("fonts/pt-serif-latin-400-italic.woff2") format("woff2"); unicode-range: U+0000-00FF, U+2000-206F; }
@font-face { font-family: "PT Serif"; font-weight: 400; font-style: italic; font-display: swap; src: url("fonts/pt-serif-latin-ext-400-italic.woff2") format("woff2"); unicode-range: U+0100-02AF; }
@font-face { font-family: "PT Serif"; font-weight: 700; font-style: italic; font-display: swap; src: url("fonts/pt-serif-latin-700-italic.woff2") format("woff2"); unicode-range: U+0000-00FF, U+2000-206F; }
@font-face { font-family: "PT Serif"; font-weight: 700; font-style: italic; font-display: swap; src: url("fonts/pt-serif-latin-ext-700-italic.woff2") format("woff2"); unicode-range: U+0100-02AF; }

:root {
  --text: #000;
  --mute: #555;
  --bg: #fff;
  --panel: #f3f3f3;
  --line: #ccc;
  --link: #0a58ca;
  --ok: #157347;
  --chyba: #bb2d3b;
  --odhad: #8a6400;
  --kod-typ: #0a58ca;
  --kod-text: #8a4b00;
  --kod-pozn: #157347;
  --kod-fce: #6f42c1;
}

:root[data-motiv="dark"] {
  --text: #fff;
  --mute: #b5b5b5;
  --bg: #000;
  --panel: #1c1c1c;
  --line: #444;
  --link: #6ea8fe;
  --ok: #75d6a1;
  --chyba: #f1868f;
  --odhad: #ffc107;
  --kod-typ: #6ea8fe;
  --kod-text: #ffc107;
  --kod-pozn: #75d6a1;
  --kod-fce: #c29ffa;
}

* { box-sizing: border-box; }
html { scroll-padding-top: 4rem; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 18px/1.6 "PT Serif", Georgia, "Times New Roman", serif;
}

.rozlozeni {
  display: grid;
  grid-template-columns: minmax(14rem, 18rem) minmax(0, 52rem);
  gap: 2.5rem;
  justify-content: center;
  padding: 0 1.25rem;
}

main { min-width: 0; padding: 1.5rem 0 5rem; }
.rozlozeni > main:only-child { grid-column: 1 / -1; width: 100%; max-width: 52rem; margin: 0 auto; }
main p, main li { hyphens: auto; }
main > p, .blok-telo > p, .rozbal-telo > p { text-align: justify; }

h1 { font-size: 2rem; line-height: 1.2; margin: 0.5rem 0 1rem; }
h2 { font-size: 1.5rem; line-height: 1.25; margin: 2.4rem 0 0.8rem; font-weight: 400; }
h3 { font-size: 1.15rem; margin: 1.6rem 0 0.5rem; }
.cislo-sekce { color: var(--mute); font-variant-numeric: tabular-nums; }

a { color: var(--link); }
img, svg { max-width: 100%; }
.ikona { width: 1.1em; height: 1.1em; vertical-align: -0.15em; }

nav.hlavni {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.6rem;
  align-items: center;
  padding: 0.5rem 1.25rem;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}
nav.hlavni a { padding: 0.1rem 0.5rem; border-radius: 4px; color: var(--text); text-decoration: none; white-space: nowrap; }
nav.hlavni a:hover { background: var(--panel); }
nav.hlavni a.aktivni { background: var(--text); color: var(--bg); font-weight: 700; }
nav.hlavni a[data-pocet]:not([data-pocet=""])::after { content: " " attr(data-pocet); font-weight: 700; }
#prepnout-motiv { margin: 0 0 0 auto; padding: 0.2rem 0.5rem; }
[data-motiv="dark"] .ikona-tmava, [data-motiv="light"] .ikona-svetla { display: none; }

code { padding: 0.1em 0.3em; background: var(--panel); border-radius: 3px; font: 0.85em ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
pre { overflow-x: auto; padding: 0.8rem 1rem; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; }
pre code { padding: 0; background: none; font-size: 0.85rem; line-height: 1.5; }
.hljs-comment { color: var(--kod-pozn); font-style: italic; }
.hljs-keyword, .hljs-type, .hljs-built_in { color: var(--kod-typ); }
.hljs-string, .hljs-number, .hljs-literal { color: var(--kod-text); }
.hljs-meta { color: var(--mute); }
.hljs-title { color: var(--kod-fce); }

table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.95rem; }
th, td { padding: 0.4rem 0.6rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--panel); }
.katex-display { overflow-x: auto; overflow-y: hidden; }
blockquote { margin: 0.6rem 0; padding: 0.2rem 0.9rem; border-left: 3px solid var(--line); color: var(--mute); }

/* Bloky */
.blok { margin: 1.3rem 0; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); overflow: hidden; }
.blok-hlava { display: flex; align-items: center; gap: 0.6rem; padding: 0.5rem 1rem; font-size: 1.15rem; line-height: 1.3; }
.blok-titulek { flex: 1; }
.blok-ikona { color: inherit; display: inline-flex; }
.blok-telo { padding: 0.9rem 1rem; }
.blok-telo > :first-child { margin-top: 0; }
.blok-telo > :last-child { margin-bottom: 0; }
.blok-poznamka { display: inline-flex; margin: 0; padding: 0.1rem 0.3rem; background: none; border: 0; color: inherit; font-size: 0.9rem; opacity: 0.6; }
.blok-poznamka:hover { opacity: 1; }

.definice .blok-hlava { background: #198754; color: #fff; }
.veta .blok-hlava { background: #0dcaf0; color: #000; }
.priklad .blok-hlava { background: #ffc107; color: #000; }
.pozor .blok-hlava { background: #dc3545; color: #fff; }
.cviceni .blok-hlava { background: #0d6efd; color: #fff; }
.poznamka > .blok-hlava { background: #6c757d; color: #fff; }
.tahak .blok-hlava { background: #343a40; color: #fff; }
.cil .blok-hlava { background: var(--panel); color: var(--text); font-size: 1rem; }
.cil ul { margin: 0; padding-left: 1.2rem; }

/* Rozbalovací důkazy a řešení */
.rozbal { margin: 0.9rem 0; border: 1px solid var(--line); border-radius: 6px; }
.rozbal > summary { position: relative; padding: 0.6rem 2.6rem 0.6rem 1rem; cursor: pointer; list-style: none; font-size: 1.05rem; }
.rozbal > summary::-webkit-details-marker { display: none; }
.rozbal > summary::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 1.1rem;
  width: 0.55rem;
  height: 0.55rem;
  margin-top: -0.4rem;
  border-right: 2px solid var(--link);
  border-bottom: 2px solid var(--link);
  transform: rotate(45deg);
}
.rozbal[open] > summary::after { margin-top: -0.1rem; transform: rotate(-135deg); }
.rozbal > summary:focus-visible { outline: 2px solid var(--link); outline-offset: -2px; border-radius: 6px; }
.rozbal-telo { padding: 0.2rem 1rem 0.9rem; border-top: 1px solid var(--line); }
.napoveda > summary { color: var(--mute); }
.blok .rozbal { background: var(--bg); }

/* Boční menu */
.bocni { position: sticky; top: 3.1rem; align-self: start; max-height: calc(100vh - 3.4rem); overflow-y: auto; padding: 1.2rem 0.3rem 1rem 0; font-size: 0.9rem; line-height: 1.35; }
.bocni summary { display: none; }
.bocni-nadpis { margin: 0 0 0.3rem; color: var(--mute); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.bocni ol { margin: 0 0 1.3rem; padding: 0; list-style: none; }
.bocni li a { display: block; padding: 0.3rem 0.55rem; border-left: 3px solid transparent; color: var(--text); text-decoration: none; }
.bocni li a:hover { background: var(--panel); }
.bocni li a.aktualni { border-left-color: var(--text); background: var(--panel); font-weight: 700; }
.bocni li a.pod { padding: 0.15rem 0.55rem 0.15rem 1.3rem; color: var(--mute); font-size: 0.82rem; }
.bocni li a.pod.aktualni { color: var(--text); }
.bocni .cislo { font-weight: 700; font-variant-numeric: tabular-nums; }
.bocni li a.prostudovano::after { content: " ✓"; color: var(--ok); font-weight: 700; }
.bocni-obsah a[href^="#kviz"], .bocni-obsah a[href^="#tahak"] { font-weight: 700; }

.meta { display: flex; flex-wrap: wrap; gap: 0.2rem 1.5rem; margin: 0 0 1rem; color: var(--mute); font-size: 0.9rem; text-align: left; }
.meta strong { color: var(--text); }

.hotovo { display: block; margin: 2.5rem 0 0; padding: 0.7rem 1rem; border: 1px solid var(--line); border-radius: 6px; cursor: pointer; }
.strankovani { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1rem; }
.strankovani a { display: block; padding: 0.6rem 1rem; border: 1px solid var(--line); border-radius: 6px; color: var(--text); text-decoration: none; font-weight: 700; }
.strankovani a:hover { border-color: var(--text); }
.strankovani small { display: block; color: var(--mute); font-weight: 400; }
.strankovani .dalsi { text-align: right; }

/* Kvíz */
.kviz { margin: 1.5rem 0; padding: 1rem; border: 1px solid var(--line); border-radius: 6px; }
.kviz-titulek { margin: 0 0 0.6rem; font-size: 1.15rem; }
.otazka { margin: 0 0 1.3rem; padding: 0; border: 0; }
.otazka legend { padding: 0; font-weight: 700; }
.moznost { display: flex; gap: 0.5rem; align-items: baseline; margin: 0.2rem 0; padding: 0.1rem 0.4rem; border-radius: 4px; }
.moznost.spravna { background: rgba(25, 135, 84, 0.22); }
.moznost.chybna { background: rgba(220, 53, 69, 0.22); }
button { margin-top: 0.4rem; padding: 0.3rem 0.8rem; background: var(--panel); color: var(--text); border: 1px solid var(--line); border-radius: 5px; font: inherit; font-size: 0.95rem; cursor: pointer; }
button:hover { border-color: var(--text); }
input[type="text"], select, textarea { padding: 0.25rem 0.4rem; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 4px; font: inherit; }
input[type="text"] { width: 6rem; }
.vysledek { margin: 0.4rem 0 0.2rem; font-weight: 700; }
.vysledek.spravne { color: var(--ok); }
.vysledek.spatne { color: var(--chyba); }
.vysvetleni { color: var(--mute); }
.kviz-skore { margin: 0; font-weight: 700; }
.kviz-reset { margin-top: 0.6rem; }

/* Přehled */
#terminy-seznam, #terminy-prosle { margin: 0.5rem 0; padding: 0; list-style: none; }
.termin { display: flex; flex-wrap: wrap; gap: 0.15rem 0.7rem; align-items: baseline; padding: 0.45rem 0; border-bottom: 1px solid var(--line); }
.termin-kdy { font-weight: 700; font-variant-numeric: tabular-nums; }
.termin-predmet { padding: 0 0.4rem; border: 1px solid var(--line); border-radius: 3px; font-size: 0.85rem; font-weight: 700; }
.termin-zbyva { margin-left: auto; color: var(--mute); }
.termin-poznamka { flex-basis: 100%; color: var(--mute); }
.odhad { color: var(--odhad); font-size: 0.85rem; }
.predmet-body { margin: 0 0 1rem; padding: 0.6rem 1rem; border: 1px solid var(--line); border-radius: 6px; }
.predmet-body legend { padding: 0 0.3rem; font-weight: 700; }
.bod-pole { display: inline-flex; gap: 0.3rem; align-items: baseline; margin: 0.2rem 1rem 0.2rem 0; }
.bod-pole input[type="text"] { width: 3.5rem; }
.bod-max { color: var(--mute); }
.predmet-stav { margin: 0.5rem 0 0; font-weight: 700; }
input.neplatne { border-color: var(--chyba); }
.tyden-ukoly { margin: 0.5rem 0; padding: 0; list-style: none; }
.tyden-ukoly li { padding: 0.25rem 0; }
.tyden-poznamka { padding: 0.5rem 0.8rem; border-left: 4px solid #dc3545; background: var(--panel); }
.tyden { margin-bottom: 2rem; }
.tyden-predbezny { color: var(--odhad); font-size: 0.9rem; }
.tyden-terminy { margin: 0.5rem 0; }
.kontrola-bod { list-style: none; margin-left: -1.3rem; }

.zdroje { margin-top: 3rem; padding-top: 0.5rem; border-top: 1px solid var(--line); color: var(--mute); font-size: 0.85rem; }
.zdroje h2 { margin-top: 0.5rem; font-size: 1rem; font-weight: 700; }

/* Krokovač Turingova stroje */
.ts { margin: 1rem 0; padding: 0.7rem 1rem; border: 1px solid var(--line); border-radius: 6px; }
.ts-ovladani { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; margin: 0 0 0.6rem; }
.ts-ovladani button { margin: 0; }
.ts-ovladani input { width: 9rem; font-family: ui-monospace, Menlo, Consolas, monospace; }
.ts-pasky { overflow-x: auto; }
.ts-paska { display: flex; margin: 0.25rem 0; }
.ts-bunka { display: inline-flex; flex: 0 0 auto; justify-content: center; align-items: center; width: 2rem; height: 2rem; margin-right: -1px; border: 1px solid var(--line); font-family: ui-monospace, Menlo, Consolas, monospace; }
.ts-hlava { background: var(--text); color: var(--bg); font-weight: 700; }
.ts-prechod { margin: 0.5rem 0 0; color: var(--mute); font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 0.85rem; }
.ts-stav { margin: 0.2rem 0 0; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 0.9rem; }
.ts-stav.spravne { color: var(--ok); }
.ts-stav.spatne { color: var(--chyba); }

.obrazek { margin: 1.2rem 0; text-align: center; }
.obrazek svg { width: 100%; height: auto; max-width: 40rem; }
.obrazek figcaption { color: var(--mute); font-size: 0.9rem; }
.opakovani-radek { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem; margin: 0.3rem 0; padding: 0.3rem 0; border-bottom: 1px solid var(--line); }
.opakovani-radek button { margin: 0; }

/* Poznámky */
#poznamka-pridat { position: fixed; right: 1rem; bottom: 1rem; z-index: 6; margin: 0; padding: 0.45rem 0.9rem; background: var(--text); color: var(--bg); border: 0; border-radius: 6px; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35); }
#poznamka-vyber { position: absolute; z-index: 7; margin: 0; padding: 0.3rem 0.7rem; background: var(--text); color: var(--bg); border: 0; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35); }
#poznamka-dialog { width: min(36rem, calc(100vw - 2rem)); padding: 1rem 1.2rem; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 8px; }
#poznamka-dialog::backdrop { background: rgba(0, 0, 0, 0.55); }
#poznamka-misto { margin: 0 0 0.5rem; color: var(--mute); font-size: 0.9rem; }
#poznamka-citace { max-height: 8rem; overflow-y: auto; }
#poznamka-typ { display: block; margin: 0.5rem 0; }
#poznamka-text { width: 100%; }
.poznamka-tlacitka { display: flex; justify-content: flex-end; gap: 0.5rem; margin: 0.5rem 0 0; }
.poznamka { margin: 0.8rem 0; padding: 0.6rem 0.9rem; border: 1px solid var(--line); border-radius: 6px; }
.poznamka p { margin: 0.3rem 0; }
.poznamka-hlava { color: var(--mute); font-size: 0.9rem; }
.poznamka-hlava strong { color: var(--text); }
.poznamky-akce { display: flex; flex-wrap: wrap; gap: 0.5rem; }

@media (max-width: 62rem) {
  body { font-size: 17px; }
  nav.hlavni { flex-wrap: nowrap; overflow-x: auto; }
  .rozlozeni { display: block; }
  .bocni { position: static; max-height: none; padding: 0.6rem 0 0; }
  .bocni summary { display: block; padding: 0.4rem 0; color: var(--link); font-weight: 700; cursor: pointer; }
  .bocni details:not([open]) ol, .bocni details:not([open]) p { display: none; }
  main > p, .blok-telo > p, .rozbal-telo > p { text-align: left; }
}

@media print {
  nav.hlavni, button, .sebehodnoceni, .bocni, .strankovani, .hotovo, #poznamky-stranky, #poznamka-pridat { display: none !important; }
  :root { --text: #000; --bg: #fff; --panel: #f3f3f3; --line: #bbb; --mute: #444; }
  body { font-size: 11pt; }
  .rozlozeni { display: block; padding: 0; }
  main { padding: 0; }
  .blok, .kviz, .otazka { break-inside: avoid; }
  .blok-hlava { print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  .vysvetleni { display: block !important; }
  a { color: inherit; }
}