/* Paleta vychází ze zvýrazňování syntaxe — vernakuláru oboru, ne z obecné „ajtí modré“. */
:root {
  --ink: #1b1a2e;
  --ink-soft: #4a4866;
  --paper: #ffffff;
  --wash: #f1f0fa;
  --rule: #d9d7ea;

  --kw: #6b21e8;   /* klíčové slovo */
  --str: #0e7a55;  /* řetězec */
  --num: #c7410d;  /* číslo */
  --fn: #1546c8;   /* funkce */
  --type: #a81758; /* typ */

  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas,
          "Liberation Mono", "Courier New", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
          Arial, sans-serif;

  --measure: 66ch;
  --gap: clamp(1.5rem, 4vw, 3rem);
  --pad: clamp(1.15rem, 5vw, 4rem);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; }

a { color: var(--kw); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: 3px solid var(--fn);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: #fff; padding: 0.75rem 1rem; z-index: 50;
}
.skip:focus { left: 0; }

.wrap { max-width: 78rem; margin: 0 auto; padding-inline: var(--pad); }
.prose { max-width: var(--measure); }
.prose p { margin: 0 0 1.1em; }

/* ---------------------------------------------------------------- hlavička */
.masthead { border-bottom: 1px solid var(--rule); background: var(--paper); }
.masthead .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 4.25rem;
}

.brand {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
  line-height: 1.2;
}
.brand span { display: block; font-weight: 400; font-size: 0.72rem; color: var(--ink-soft); }

.nav ul { display: flex; gap: 1.35rem; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
.nav a { color: var(--ink); text-decoration: none; font-size: 0.94rem; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--kw); text-decoration: underline; }

.menu { display: none; }
.menu > summary {
  list-style: none; cursor: pointer; font-family: var(--mono);
  font-size: 0.9rem; padding: 0.5rem 0.7rem; border: 1px solid var(--rule); border-radius: 4px;
}
.menu > summary::-webkit-details-marker { display: none; }
.menu[open] > summary { background: var(--wash); }

/* ------------------------------------------------------------------- hero */
.hero { padding-block: clamp(2.5rem, 7vw, 5rem) clamp(2rem, 5vw, 3.5rem); }
.hero h1 {
  font-family: var(--mono);
  font-size: clamp(1.85rem, 1.1rem + 3.4vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-weight: 700;
  margin: 0 0 1.1rem;
  max-width: 20ch;
}
.hero .lead { max-width: 56ch; font-size: clamp(1.05rem, 1rem + 0.4vw, 1.2rem); color: var(--ink-soft); margin: 0 0 1.75rem; }

/* Rejstřík jazyků — hlavní prvek stránky. Veškerá odvaha je utracená tady. */
.index { border-top: 2px solid var(--ink); margin-top: clamp(2rem, 5vw, 3rem); }
.index-row {
  display: grid;
  grid-template-columns: minmax(7.5rem, 1fr) 4.5rem minmax(0, 2.2fr) auto;
  gap: 0.75rem 1rem;
  align-items: baseline;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
  color: var(--ink);
}
.index-row:hover { background: var(--wash); }
.index-name {
  font-family: var(--mono);
  font-size: clamp(1.25rem, 1rem + 1.1vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}
.index-year { font-family: var(--mono); font-size: 0.85rem; color: var(--ink-soft); }
.index-para { font-size: 0.9rem; color: var(--ink-soft); }
.index-role { font-size: 0.85rem; font-family: var(--mono); }

.c0 .index-name, .c0 .index-role { color: var(--kw); }
.c1 .index-name, .c1 .index-role { color: var(--str); }
.c2 .index-name, .c2 .index-role { color: var(--num); }
.c3 .index-name, .c3 .index-role { color: var(--fn); }
.c4 .index-name, .c4 .index-role { color: var(--type); }

/* ---------------------------------------------------------------- sekce */
.band { padding-block: clamp(2.25rem, 5vw, 3.75rem); border-top: 1px solid var(--rule); }
.band-wash { background: var(--wash); border-top: none; }

h2 {
  font-family: var(--mono);
  font-size: clamp(1.3rem, 1.1rem + 0.85vw, 1.85rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin: 0 0 0.9rem;
}
h3 {
  font-family: var(--mono);
  font-size: 1.08rem;
  letter-spacing: -0.02em;
  margin: 0 0 0.45rem;
}

/* Dvousloupcový list: levý sloupec nese informaci, není to ozdobný štítek. */
.sheet { display: grid; grid-template-columns: 12rem minmax(0, 1fr); gap: 0.5rem var(--gap); }
.sheet + .sheet { margin-top: 1.75rem; padding-top: 1.75rem; border-top: 1px solid var(--rule); }
.sheet > dt { font-family: var(--mono); font-size: 0.88rem; color: var(--ink-soft); }
.sheet > dd { margin: 0; max-width: var(--measure); }

.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); gap: var(--gap); }

.list { margin: 0; padding: 0; list-style: none; }
.list li { padding: 0.5rem 0 0.5rem 1.35rem; border-bottom: 1px solid var(--rule); position: relative; }
.list li::before {
  content: "·"; position: absolute; left: 0.25rem; color: var(--kw);
  font-family: var(--mono); font-weight: 700;
}

.steps { counter-reset: step; margin: 0; padding: 0; list-style: none; }
.steps > li { counter-increment: step; padding: 1.15rem 0; border-top: 1px solid var(--rule); }
.steps > li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono); font-size: 0.85rem; color: var(--num); display: block; margin-bottom: 0.3rem;
}

.crumbs { font-size: 0.85rem; color: var(--ink-soft); padding-block: 1rem 0; }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 0.4rem; list-style: none; margin: 0; padding: 0; }
.crumbs li + li::before { content: "/"; margin-right: 0.4rem; color: var(--rule); }

.page-head { padding-block: clamp(1.75rem, 4vw, 3rem) 1.5rem; }
.page-head h1 {
  font-family: var(--mono);
  font-size: clamp(1.65rem, 1.2rem + 2.2vw, 2.8rem);
  line-height: 1.12; letter-spacing: -0.035em; margin: 0 0 0.9rem; max-width: 22ch;
}
.page-head .lead { max-width: 58ch; font-size: 1.1rem; color: var(--ink-soft); margin: 0; }

.tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.25rem 0 0; padding: 0; list-style: none; }
.tags a {
  font-family: var(--mono); font-size: 0.85rem; text-decoration: none;
  border: 1px solid var(--rule); border-radius: 3px; padding: 0.3rem 0.6rem; color: var(--ink);
  display: inline-block;
}
.tags a:hover { border-color: var(--kw); color: var(--kw); }

details.faq { border-bottom: 1px solid var(--rule); }
details.faq > summary {
  cursor: pointer; padding: 0.9rem 0; font-family: var(--mono); font-size: 0.98rem;
  letter-spacing: -0.01em;
}
details.faq > summary:hover { color: var(--kw); }
details.faq > div { padding-bottom: 1rem; max-width: var(--measure); }

.cta {
  display: inline-block; background: var(--kw); color: #fff; text-decoration: none;
  font-family: var(--mono); font-size: 0.95rem; padding: 0.8rem 1.4rem; border-radius: 4px;
}
.cta:hover { background: #551bbb; }

table { border-collapse: collapse; width: 100%; font-size: 0.93rem; }
th, td { text-align: left; padding: 0.6rem 0.75rem 0.6rem 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-family: var(--mono); font-weight: 600; font-size: 0.85rem; }

/* ---------------------------------------------------------------- formulář */
.form { max-width: 34rem; }
.field { margin-bottom: 1.1rem; }
.field label { display: block; font-family: var(--mono); font-size: 0.88rem; margin-bottom: 0.35rem; }
.field input, .field textarea, .field select {
  width: 100%; font: inherit; color: inherit; background: var(--paper);
  border: 1px solid var(--ink-soft); border-radius: 4px; padding: 0.6rem 0.7rem;
}
.field textarea { min-height: 8.5rem; resize: vertical; }
.field .hint { font-size: 0.85rem; color: var(--ink-soft); margin-top: 0.3rem; }
.check { display: flex; gap: 0.65rem; align-items: flex-start; margin-bottom: 1.25rem; }
.check input { margin-top: 0.3rem; }
.check label { font-size: 0.93rem; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.err { color: #b3121f; font-size: 0.88rem; margin-top: 0.3rem; }
.errbox { border: 2px solid #b3121f; padding: 1rem 1.15rem; margin-bottom: 1.5rem; border-radius: 4px; }
.errbox h2 { color: #b3121f; font-size: 1.05rem; margin-bottom: 0.5rem; }

/* ----------------------------------------------------------------- patička */
.foot { border-top: 2px solid var(--ink); margin-top: clamp(2.5rem, 6vw, 4.5rem); padding-block: clamp(2rem, 4vw, 3rem) 2rem; font-size: 0.92rem; }
.foot h2 { font-size: 0.88rem; font-family: var(--mono); color: var(--ink-soft); margin-bottom: 0.75rem; letter-spacing: 0; }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin-bottom: 0.4rem; }
.foot a { color: var(--ink); text-decoration: none; }
.foot a:hover { color: var(--kw); text-decoration: underline; }
.legal-block { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--rule); color: var(--ink-soft); }
.legal-block address { font-style: normal; margin: 0 0 0.6rem; }
.legal-block .sep { border: 0; border-top: 1px solid var(--rule); margin: 0.75rem 0; max-width: 18rem; }
.ghost {
  font: inherit; font-family: var(--mono); font-size: 0.9rem; background: none;
  border: 1px solid var(--rule); border-radius: 3px; padding: 0.35rem 0.65rem;
  color: var(--ink); cursor: pointer;
}
.ghost:hover { border-color: var(--kw); color: var(--kw); }

.note { background: var(--wash); border-left: 3px solid var(--kw); padding: 1rem 1.15rem; max-width: var(--measure); }
.note p:last-child { margin-bottom: 0; }

/* ------------------------------------------------------------------ mobil */
@media (max-width: 62rem) {
  .sheet { grid-template-columns: 1fr; }
  .sheet > dt { color: var(--kw); }
}

@media (max-width: 48rem) {
  .nav { display: none; }
  .menu { display: block; position: relative; }
  .menu .nav { display: block; position: absolute; right: 0; top: calc(100% + 0.5rem);
    background: var(--paper); border: 1px solid var(--rule); border-radius: 4px;
    padding: 0.75rem 1rem; min-width: 13rem; box-shadow: 0 8px 28px rgba(27, 26, 46, 0.12); z-index: 20; }
  .menu:not([open]) .nav { display: none; }
  .menu .nav ul { display: block; }
  .menu .nav li { padding: 0.4rem 0; }
  .index-row { grid-template-columns: 1fr auto; row-gap: 0.15rem; }
  .index-year { text-align: right; }
  .index-para { grid-column: 1 / -1; }
  .index-role { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}