:root{
  color-scheme:dark;

  /* Web je zamerne JEDNOTEMATICKY - tmavy, at ho divak otevre s jakymkoli nastavenim
     systemu (rozhodnuti autora 14. 9. 2026). Proto tu NENI @media (prefers-color-scheme)
     ani [data-theme]: kdyz se prida svetla varianta, musi se s ni prekreslit i obrazky
     (viz web/README.md, sekce "Tmavy podklad"). */
  --ground:#0E1210; --surface:#161B18; --surface-2:#1E2420;
  --ink:#E6EAE4; --muted:#96A197; --line:#2A322C;
  --accent:#E8B04A; --accent-soft:#2E2716;
  --free:#5FBE7F; --block:#E8705A; --plan:#5BBCD6; --route:#C287E2;
  --hero-bg:#12160F; --hero-ink:#F2F3EC; --hero-muted:#9AA394; --hero-line:#2E362A;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--ground); color:var(--ink);
  font-family:"Newsreader",Georgia,"Times New Roman",serif;
  font-size:20px; line-height:1.68;
}
h1,h2,h3,.eyebrow,.stat-n,.chip,.mono,figcaption,th,.btn{
  font-family:"Archivo","Helvetica Neue",Arial,sans-serif;
}
.mono,.eyebrow,.stat-n,.tag,.legend,.kv td:first-child{
  font-family:"JetBrains Mono",ui-monospace,"SFMono-Regular",Consolas,monospace;
}

/* ---------- layout spine ---------- */
/* Jedna sirka pro text i obrazky (sjednoceno 14. 9. 2026 na pokyn autora).
   Trida .wide zustava kvuli existujicimu znaceni, ale miri do teze drahy. */
main{
  display:grid;
  grid-template-columns:
    [full-start] minmax(20px,1fr)
    [wide-start text-start] minmax(0,1040px) [text-end wide-end]
    minmax(20px,1fr) [full-end];
  row-gap:0;
}
main > *{grid-column:text}
.wide{grid-column:wide}
.full{grid-column:full}

section{padding:clamp(38px,6vw,72px) 0 0}
section.first{padding-top:clamp(30px,5vw,56px)}

/* ---------- hero ---------- */
.hero{
  grid-column:full; background:var(--hero-bg); color:var(--hero-ink);
  padding:clamp(44px,7vw,96px) 20px clamp(36px,5vw,64px);
  border-bottom:1px solid var(--hero-line);
}
.hero-in{max-width:1040px;margin:0 auto}
.hero .eyebrow{color:var(--accent)}
.hero h1{
  font-size:clamp(38px,7.4vw,74px); line-height:1.02; font-weight:700;
  letter-spacing:-.028em; margin:.28em 0 0; max-width:15ch; text-wrap:balance;
}
.hero p{color:var(--hero-ink); font-size:clamp(19px,2.1vw,23px); margin:1.1em 0 0}
.hero p.sub{color:var(--hero-muted); font-size:17px}

.eyebrow{
  font-size:11.5px; font-weight:600; letter-spacing:.16em; text-transform:uppercase;
  color:var(--muted); margin:0;
}

.stats{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  gap:1px; background:var(--hero-line); border:1px solid var(--hero-line);
  margin-top:clamp(30px,4vw,48px);
}
.stat{background:var(--hero-bg); padding:16px 18px 18px}
.stat-n{
  display:block; font-size:clamp(26px,3.4vw,34px); font-weight:600; letter-spacing:-.02em;
  color:var(--accent); font-variant-numeric:tabular-nums;
}
.stat-l{display:block; font-size:14px; line-height:1.4; color:var(--hero-muted); margin-top:6px;
  font-family:"Archivo",Arial,sans-serif;}

/* ---------- type ---------- */
h2{
  font-size:clamp(27px,3.6vw,38px); line-height:1.14; font-weight:700; letter-spacing:-.022em;
  margin:.35em 0 .4em; text-wrap:balance;
}
h3{font-size:20px; font-weight:600; letter-spacing:-.01em; margin:2em 0 .35em}
p{margin:0 0 1.05em}
.lead{font-size:22px; color:var(--ink)}
a{color:var(--accent)}
a:focus-visible,.btn:focus-visible{outline:2px solid var(--accent); outline-offset:3px}
strong{font-weight:600}
.mark{background:var(--accent-soft); padding:0 .18em; border-radius:2px}

ul{margin:0 0 1.1em; padding-left:1.15em}
li{margin:.3em 0}
li::marker{color:var(--accent)}

/* ---------- figures ---------- */
figure{margin:2.2em 0 2.4em}
figure img{
  /* obrazek vyplni sloupec, uzsi (se stropem max-width primo na <img>) se vystredi */
  display:block; width:100%; height:auto; margin-left:auto; margin-right:auto; border:1px solid var(--line); border-radius:3px;
  background:var(--surface-2);
}
figcaption{
  font-size:13.5px; line-height:1.5; color:var(--muted); margin-top:10px; max-width:70ch;
}
figcaption b{color:var(--ink); font-weight:600}
.diagram{
  background:var(--surface); border:1px solid var(--line); border-radius:3px;
  padding:18px 16px 10px; overflow-x:auto;
}
.diagram svg{display:block; width:100%; min-width:620px; height:auto; color:var(--ink)}

/* ---------- side note ---------- */
.note{
  border-left:3px solid var(--accent); padding:2px 0 2px 18px; margin:2em 0;
  font-size:17px; color:var(--muted);
}
.note b{color:var(--ink)}

/* ---------- cards ---------- */
.cards{display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:18px; margin:2em 0 1em}
.card{background:var(--surface); border:1px solid var(--line); padding:20px 20px 22px}
.card h3{margin:.5em 0 .4em; font-size:19px}
.card p{font-size:16px; line-height:1.55; color:var(--muted); margin:0}
.card .eyebrow{color:var(--accent)}

/* ---------- key/value ---------- */
.kv{width:100%; border-collapse:collapse; font-size:16px; margin:1.4em 0 1em}
.kv td{border-top:1px solid var(--line); padding:10px 0; vertical-align:top}
.kv td:first-child{width:38%; font-size:13px; color:var(--muted); padding-right:18px;
  text-transform:uppercase; letter-spacing:.06em}
.kv tr:last-child td{border-bottom:1px solid var(--line)}

/* ---------- footer ---------- */
footer{
  grid-column:full; margin-top:clamp(48px,7vw,90px); border-top:1px solid var(--line);
  background:var(--surface); padding:36px 20px 44px;
}
.foot-in{max-width:1040px; margin:0 auto; display:flex; flex-wrap:wrap; gap:18px 40px;
  align-items:baseline; font-size:14.5px; color:var(--muted)}
.foot-in .mono{font-size:12.5px; letter-spacing:.04em}

@media (prefers-reduced-motion:no-preference){
  a{transition:opacity .15s ease}
}
@media (max-width:760px){
  body{font-size:19px}
  .lead{font-size:19.5px}
}

/* ---------- hlavička a navigace webu (sdílené všemi stránkami) ---------- */
.sitehead{
  background:var(--hero-bg); color:var(--hero-ink);
  border-bottom:1px solid var(--hero-line);
  display:flex; flex-wrap:wrap; align-items:center; gap:10px 28px;
  padding:12px 20px;
}
.sitehead .brand{
  display:flex; align-items:center; gap:10px; text-decoration:none; color:var(--hero-ink);
  font-family:"Archivo",Arial,sans-serif; font-weight:700; letter-spacing:-.01em; font-size:19px;
}
.sitehead .brand img{width:26px; height:26px; display:block}
.sitehead nav{display:flex; flex-wrap:wrap; gap:4px 20px}
.sitehead nav a{
  font-family:"Archivo",Arial,sans-serif; font-size:14px; text-decoration:none;
  color:var(--hero-muted); padding:4px 0; border-bottom:2px solid transparent;
}
.sitehead nav a:hover{color:var(--hero-ink)}
.sitehead nav a.on{color:var(--accent); border-bottom-color:var(--accent)}

/* ---------- jednoduchá stránka (bez hero) ---------- */
.pagehead{grid-column:text; padding:clamp(34px,5vw,60px) 0 0}
.pagehead h1{
  font-family:"Archivo",Arial,sans-serif; font-weight:700; letter-spacing:-.024em;
  font-size:clamp(30px,4.6vw,46px); line-height:1.08; margin:.2em 0 .3em; text-wrap:balance;
}

/* ---------- prázdná stránka, která čeká na obsah ---------- */
.stub{
  border:1px dashed var(--line); background:var(--surface); border-radius:3px;
  padding:22px 24px; color:var(--muted); font-size:17px; margin:1.4em 0 0;
}
.stub b{color:var(--ink); font-weight:600}

/* ---------- rozcestník na úvodní stránce ---------- */
.linkcards{display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:18px; margin:2.2em 0 1em}
.linkcards a{
  display:block; text-decoration:none; color:inherit;
  background:var(--surface); border:1px solid var(--line); padding:20px 20px 22px;
}
.linkcards a:hover{border-color:var(--accent)}
.linkcards h3{margin:.4em 0 .35em; font-size:19px; color:var(--accent)}
.linkcards p{font-size:16px; line-height:1.55; color:var(--muted); margin:0}

/* ---------- obrázek modelu na úvodu ---------- */
.model{margin:0}
.model img{background:transparent; border:0}

/* ---------- číslované vzorce (sází MathJax) ---------- */
.eqs{margin:1.8em 0; display:grid; gap:.35em}
.eq{display:grid; grid-template-columns:1fr auto; align-items:center; gap:18px}
.eq > div:first-child{overflow-x:auto; overflow-y:hidden; min-width:0}
.eq .num{
  font-family:"JetBrains Mono",ui-monospace,Consolas,monospace; font-size:13px;
  color:var(--muted); font-variant-numeric:tabular-nums;
}
.legend{font-family:"Newsreader",Georgia,serif; margin:1.2em 0 1.6em; display:grid; gap:.25em; font-size:16px; color:var(--muted)}
.legend div{display:grid; grid-template-columns:auto 1fr; gap:12px; align-items:baseline}
.legend b{color:var(--ink); font-weight:500; text-align:right; white-space:nowrap}

/* ---------- chybějící zdroj (dočasné) ---------- */
.missing{
  border-left:3px solid var(--block); background:var(--surface); padding:14px 18px;
  margin:1.8em 0; font-size:16px; color:var(--muted);
}
.missing b{color:var(--ink); font-weight:600}

/* ---------- tabulka výsledků ---------- */
.results-wrap{overflow-x:auto; margin:1.8em 0}
table.results{border-collapse:collapse; font-size:16px; min-width:420px}
table.results th, table.results td{
  border:1px solid var(--line); padding:7px 14px; text-align:center;
  font-variant-numeric:tabular-nums;
}
table.results th{
  background:var(--surface-2); font-family:"Archivo",Arial,sans-serif; font-size:13px;
  letter-spacing:.05em; text-transform:uppercase; font-weight:600;
}
table.results td.robot{
  font-family:"Archivo",Arial,sans-serif; font-weight:700; background:var(--surface);
  letter-spacing:-.01em;
}
table.results td.y{text-align:right; color:var(--muted)}
table.results td.win{color:var(--accent); font-weight:600}
/* Odkaz na vysledkovou listinu primo v bunce. Barvu NEDEDI z a{color:var(--accent)}:
   accent tu uz znamena "vitezstvi" (td.win), takze prolinkovana sedmicka by vypadala
   jako vyhra. Odkaz proto nese barvu textu bunky a poznat je po tecknovanem podtrzeni;
   v bunce s vitezstvim se accent zdedi spravne prave pres color:inherit. */
table.results td a{
  color:inherit; text-decoration:underline; text-decoration-style:dotted;
  text-decoration-color:var(--muted); text-underline-offset:4px;
}
table.results td a:hover, table.results td a:focus-visible{
  text-decoration-style:solid; text-decoration-color:currentColor;
}


/* ---------- seznam článků o soutěžích ---------- */
/* Ročník je ve vlastním sloupci, aby šel seznam číst po letech; šířka 3,6em stačí
   na čtyřmístný rok v monospace. Na úzkém okně se sloupce složí pod sebe. */
ul.clanky{list-style:none; padding-left:0; margin:1.4em 0}
ul.clanky li{display:grid; grid-template-columns:3.6em 1fr; gap:0 14px; margin:.7em 0}
ul.clanky .src{color:var(--muted); white-space:nowrap}
@media (max-width:520px){
  ul.clanky li{grid-template-columns:1fr; gap:2px}
}


/* ---------- hero se snímkem (návrh úvodní stránky) ---------- */
/* Dva sloupce jen na široké obrazovce; pod 860 px se text a fotka poskládají pod sebe,
   jinak by na mobilu byly oba sloupce nečitelně úzké. */
.hero-split{display:grid; grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:clamp(24px,4vw,56px); align-items:center}
.hero-photo{margin:0}
.hero-photo img{display:block; width:100%; height:auto;
  border:1px solid var(--hero-line); border-radius:3px}
/* Ve dvousloupcovem hero je pas cisel uzky, takze 2x2 - auto-fit by nechal jednu bunku prazdnou. */
.hero-split .stats{grid-template-columns:repeat(2,1fr)}
@media (max-width:860px){ .hero-split{grid-template-columns:1fr} }
@media (max-width:420px){ .hero-split .stats{grid-template-columns:1fr} }

/* ---------- pás vítězství ---------- */
ul.wins{
  list-style:none; padding:0; margin:1.6em 0;
  display:grid; grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
  gap:1px; background:var(--line); border:1px solid var(--line);
}
ul.wins li{background:var(--surface); padding:13px 15px; margin:0}
ul.wins b{
  display:block; color:var(--accent); font-family:"Archivo",Arial,sans-serif;
  font-size:15px; font-weight:600; letter-spacing:-.01em;
}
ul.wins span{display:block; color:var(--muted); font-size:13.5px; margin-top:3px}

/* ---------- kontaktní údaje ---------- */
.contact{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:26px; margin:2em 0}
.contact h3{margin:0 0 .5em; font-size:14px; text-transform:uppercase; letter-spacing:.08em; color:var(--muted)}
.contact p{margin:0; line-height:1.7}

/* ---------- blok matematiky (MathJax si čísluje sám přes 	ag) ---------- */
.mathblock{overflow-x:auto; overflow-y:hidden; margin:1.9em 0; padding-bottom:4px}
.mathblock mjx-container{margin:0 !important}

/* ---------- pás fotek (náhrada karuselu z Google Sites) ---------- */
.strip{margin:2.2em 0 2.4em}
.strip-scroll{
  display:flex; gap:10px; overflow-x:auto; overflow-y:hidden;
  padding-bottom:10px; scroll-snap-type:x proximity;
  scrollbar-width:thin;
}
.strip-scroll a{
  flex:0 0 auto; scroll-snap-align:start; display:block; line-height:0;
  border:1px solid var(--line); background:var(--surface-2);
}
.strip-scroll a:hover{border-color:var(--accent)}
.strip-scroll img{height:230px; width:auto; display:block}
.strip figcaption{margin-top:2px}
.strip .hint{
  font-family:"JetBrains Mono",ui-monospace,Consolas,monospace; font-size:11.5px;
  letter-spacing:.04em; color:var(--muted); text-transform:uppercase;
}
@media (max-width:760px){ .strip-scroll img{height:170px} }

/* ---------- uzsi schema (nema smysl tahnout pres cely sloupec) ---------- */
.diagram.uzky{max-width:560px; margin-left:auto; margin-right:auto}
.diagram.uzky svg{min-width:0}
.diagram.stredni{max-width:760px; margin-left:auto; margin-right:auto}
.diagram.stredni svg{min-width:0}

/* ---------- historie: registr úkolů (stránka je generovaná z doc/ukoly.yaml) ---------- */
.stav{
  display:inline-block; font-family:"Archivo",Arial,sans-serif; font-size:12px; font-weight:600;
  letter-spacing:.06em; text-transform:uppercase; padding:2px 8px; border-radius:2px;
  border:1px solid var(--line); color:var(--muted);
}
.stav-hotovo{color:var(--free); border-color:var(--free)}
.stav-v-kodu{color:var(--plan); border-color:var(--plan)}
.stav-otevreno{color:var(--accent); border-color:var(--accent)}
.filtr{display:flex; flex-wrap:wrap; gap:8px 18px; align-items:center; font-size:15px; margin:1.2em 0 0}
.filtr label{display:inline-flex; align-items:center; gap:6px; cursor:pointer; user-select:none}
.filtr input[type=checkbox]{position:absolute; opacity:0; width:0; height:0}
.filtr input[type=checkbox]:not(:checked) + .stav{opacity:.35; border-style:dashed}
.filtr input[type=checkbox]:focus-visible + .stav{outline:2px solid var(--accent); outline-offset:2px}
.filtr input[type=search]{flex:1 1 220px; min-width:180px; background:var(--surface); color:var(--ink); border:1px solid var(--line); border-radius:2px; padding:6px 10px; font:inherit; font-size:15px}
.filtr input[type=search]:focus{outline:2px solid var(--accent); outline-offset:1px; border-color:var(--accent)}
.filtr .pocet{color:var(--muted); font-size:13px}
.skryto{display:none !important}
.osa{margin:1.4em 0 0}
.osa h3{margin:0 0 .3em; font-size:16px; text-transform:uppercase; letter-spacing:.08em; color:var(--muted)}
.osa ul{list-style:none; padding:0; margin:0 0 .6em}
/* radek osy = mrizka s pevnymi sloupci (datum | typ | tema), aby kombinovane stitky
   "nalezeno i vyreseno" neodsouvaly odkaz - jinak polozky poskakovaly */
.osa li{display:grid; grid-template-columns:4.2em 12.5em minmax(0,1fr); column-gap:.6em; align-items:baseline; margin:.15em 0; font-size:17px}
.osa .mono{font-size:13px; color:var(--muted); white-space:nowrap}
.osa .typ{font-family:"Archivo",Arial,sans-serif; font-size:12px; text-transform:uppercase; letter-spacing:.06em;
  color:var(--muted); white-space:nowrap}
@media (max-width:600px){ .osa li{grid-template-columns:4.2em minmax(0,1fr)} .osa .typ{grid-column:2; font-size:11px} .osa li a{grid-column:2} }
.tema{background:var(--surface); border:1px solid var(--line); padding:18px 22px 16px; margin:1.4em 0 0}
.tema h3{margin:0 0 .45em; font-size:21px}
.tema-meta{display:flex; flex-wrap:wrap; gap:6px 14px; align-items:center; font-size:14px; color:var(--muted); margin:0 0 .9em}
.tema p{margin-bottom:.8em}
ul.kroky{list-style:none; padding:0; margin:0 0 .8em}
ul.kroky li{margin:.25em 0; padding-left:1.5em; position:relative; font-size:17px}
ul.kroky li::before{position:absolute; left:0; top:0; font-family:"JetBrains Mono",monospace}
ul.kroky li.hotovo::before{content:"✓"; color:var(--free)}
ul.kroky li.otevreno::before{content:"○"; color:var(--accent)}
ul.kroky .mono{font-size:12.5px; color:var(--muted); margin-left:.4em}
.tema-odkazy{font-size:14.5px; color:var(--muted); margin:0}