/* ---------- tutorial: sprievodca krok po kroku ---------- */
/* Bez JS je cela stranka citatelna zhora nadol - JS z nej az potom spravi
   sprievodcu (skryje kroky, doplni tlacidla a postup). */
.tut { margin: 0 0 1.6rem; }
.tut [hidden] { display: none !important; }

/* vyber scenara */
.tut-pick {
  display: grid; gap: .7rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  margin: 0 0 1.8rem;
}
.tut-card {
  display: block; padding: .85rem 1rem;
  border: 1px solid var(--hairline); border-radius: var(--r-lg);
  background: var(--surface-soft); color: inherit; text-decoration: none;
  transition: border-color .15s ease, background .15s ease;
}
.tut-card b {
  display: block;
  font-family: var(--font-display); font-size: 1.06rem; font-weight: 500;
  letter-spacing: -.015em; color: var(--ink);
}
.tut-card span {
  display: block; margin-top: .15rem;
  font-size: .88rem; line-height: 1.5; color: var(--muted);
}
@media (hover: hover) {
  .tut-card:hover {
    border-color: color-mix(in srgb, var(--primary) 45%, transparent);
    background: var(--surface-card);
  }
}

/* lista s postupom (dopĺňa ju JS) */
.tut-bar {
  display: flex; align-items: baseline; flex-wrap: wrap; gap: .5rem .9rem;
  margin: 0 0 1.4rem; padding-bottom: .7rem;
  border-bottom: 1px solid var(--hairline);
}
.tut-bar-name {
  font-family: var(--font-display); font-size: 1.15rem; letter-spacing: -.015em;
  color: var(--ink); margin-right: auto;
}
.tut-bar-step {
  font-family: var(--font-mono); font-size: .7rem; color: var(--muted-soft);
  font-variant-numeric: tabular-nums;
}
.tut-prog { flex: 0 0 100%; height: 3px; border-radius: 3px; background: var(--hairline); }
.tut-prog i {
  display: block; height: 100%; border-radius: 3px;
  background: var(--primary); transition: width .2s ease;
}

/* kroky */
.tut-steps { list-style: none; padding: 0; margin: 0; counter-reset: tstep; }
.tut-step { position: relative; margin: 0 0 2.2rem; padding: 0 0 0 2.6rem; }
.tut-step::before {
  counter-increment: tstep; content: counter(tstep);
  position: absolute; left: 0; top: .1rem;
  width: 1.6rem; height: 1.6rem; border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--primary) 40%, transparent);
  background: transparent;
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: .7rem; color: var(--primary);
}
/* v rezime sprievodcu je viditelny vzdy len jeden krok, cislo je v liste hore */
.tut-on .tut-step { padding-left: 0; margin-bottom: 0; }
.tut-on .tut-step::before { content: none; }
.tut-step h4 {
  margin: 0 0 .7rem;
  font-family: var(--font-sans); font-size: 1.02rem; font-weight: 600;
  letter-spacing: -.005em; color: var(--ink);
}
.tut-step h4:focus { outline: none; }
.tut-step h4:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

/* otazka s odpovedami */
.tut-q { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.tut-q li { padding: 0; margin: 0; }
.tut-q li::before { content: none; }

.tut-q a, .tut-opt, .tut-btn {
  font: inherit; cursor: pointer; text-align: left;
  border: 1px solid var(--hairline); border-radius: var(--r-md);
  background: var(--surface-soft); color: var(--ink);
  transition: border-color .15s ease, background .15s ease, color .15s ease;
}
.tut-q a, .tut-opt { display: block; width: 100%; padding: .7rem .9rem; text-decoration: none; }
.tut-q a b, .tut-opt b { display: block; font-weight: 600; color: var(--ink); }
.tut-q a span, .tut-opt span { display: block; margin-top: .1rem; font-size: .88rem; line-height: 1.5; color: var(--muted); }
@media (hover: hover) {
  .tut-q a:hover, .tut-opt:hover, .tut-btn:hover {
    border-color: color-mix(in srgb, var(--primary) 45%, transparent);
    background: var(--surface-card);
  }
}

.tut-nav { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.3rem 0 0; }
.tut-btn { padding: .45rem .95rem; font-size: .92rem; }
.tut-btn.go { background: var(--primary); border-color: var(--primary); color: var(--canvas); }
@media (hover: hover) {
  .tut-btn.go:hover { background: var(--primary-active); border-color: var(--primary-active); color: var(--canvas); }
}
.tut-btn.ghost { background: transparent; color: var(--muted); }
.tut-btn[disabled] { opacity: .35; cursor: default; }
@media (hover: hover) { .tut-btn[disabled]:hover { border-color: var(--hairline); background: transparent; } }

/* na co si dat pozor */
.tut-warn {
  border-left: 2px solid color-mix(in srgb, var(--amber) 75%, transparent);
  border-radius: var(--r-sm);
  background: color-mix(in srgb, var(--amber) 9%, var(--canvas));
  padding: .7rem .9rem; margin: 0 0 1.15rem;
  font-size: .93rem; line-height: 1.6; color: var(--body);
}
.tut-warn strong { color: var(--ink); }

/* zhrnutie na konci scenara */
.tut-done {
  border: 1px solid var(--hairline); border-radius: var(--r-lg);
  background: var(--surface-soft);
  padding: 1rem 1.15rem; margin: 0 0 1.15rem;
}
.tut-done p { margin: 0 0 .6rem; }
.tut-done ul { margin: 0; }
.tut-done li { font-size: .95rem; }

/* ---------- videa (nahlad + prehratie priamo v stranke) ---------- */
/* Nahlady su lokalne webp, na YouTube sa nic neposiela, kym clovek neklikne.
   Cele video ma vodorovnu kartu 16:9, short zvislu dlazdicu 9:16 - kazdy
   format tak dostane svoj tvar a nikde nie su rozmazane pasy od YouTube. */

/* --- cele video: vodorovna karta --- */
.vid {
  display: grid; grid-template-columns: 9.6rem 1fr; align-items: center;
  column-gap: .85rem;
  margin: .65rem 0 0;
  padding: .45rem .9rem .45rem .45rem;
  border: 1px solid var(--hairline); border-radius: var(--r-lg);
  background: var(--surface-soft);
  color: inherit; text-decoration: none;
  transition: border-color .15s ease, background .15s ease;
}
li > .vid:last-child { margin-bottom: .2rem; }

.vid-th {
  position: relative; display: block; overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-md); background: var(--code-bg);
}
.vid-th img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* prehravacie tlacidlo v strede nahladu */
.vid-play {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 2.1rem; height: 2.1rem; border-radius: 50%;
  background: rgba(20, 20, 19, .58);
  display: grid; place-items: center;
  transition: background .15s ease, transform .15s ease;
}
.vid-play::after {
  content: ""; width: 0; height: 0; margin-left: .12rem;
  border-left: .52rem solid #faf9f5;
  border-top: .32rem solid transparent; border-bottom: .32rem solid transparent;
}
/* dlzka videa priamo na nahlade */
.vid-len {
  position: absolute; right: .3rem; bottom: .3rem;
  padding: .05rem .3rem; border-radius: var(--r-xs);
  background: rgba(20, 20, 19, .78);
  font-family: var(--font-mono); font-size: .6rem; line-height: 1.5; color: #faf9f5;
}

.vid-body { display: block; min-width: 0; }
.vid-title {
  display: block; font-size: .88rem; font-weight: 500; line-height: 1.35; color: var(--ink);
  overflow: hidden;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.vid-meta {
  display: block; margin-top: .25rem;
  font-family: var(--font-mono); font-size: .64rem; line-height: 1.5; color: var(--muted-soft);
}
/* casova znacka: klik zacne presne tam, nie od zaciatku */
.vid-at {
  display: inline-block; margin-right: .35rem;
  padding: .05rem .32rem; border-radius: var(--r-xs);
  background: color-mix(in srgb, var(--primary) 13%, transparent);
  color: var(--primary); white-space: nowrap;
}

@media (hover: hover) {
  .vid:hover { border-color: color-mix(in srgb, var(--primary) 50%, transparent); background: var(--surface-card); }
  .vid:hover .vid-play { background: var(--primary); transform: translate(-50%, -50%) scale(1.08); }
}
.vid:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* Na uzkom displeji drzia short aj video rovnaky tvar: nahlad vlavo, text
   vpravo, len video ma sirsi nahlad (16:9 oproti 9:16). Predtym sa video pod
   30rem lamalo na dva riadky, kym short ostaval vodorovny - posobili potom
   ako dva rozne komponenty. */
@media (max-width: 899px) {
  .shorts { grid-template-columns: 1fr; gap: .5rem; }
  .short { grid-template-columns: 3rem 1fr; }
  .vids { grid-template-columns: 1fr; gap: .5rem; }
  .vid { grid-template-columns: 5.6rem 1fr; row-gap: 0; padding: .45rem .8rem .45rem .45rem; }
  .vid-body { padding: 0; }
  .vid-title, .short-cap { font-size: .82rem; }
}

/* viac celych videi vedla seba, ak je miesto */
.vids { display: grid; gap: .7rem; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); margin: .8rem 0 0; }
.vids .vid { margin: 0; }

/* --- short: vodorovna karta, rovnaky tvar ako cele video --- */
.shorts {
  display: grid; gap: .7rem; margin: .8rem 0 0;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}
.short {
  display: grid; grid-template-columns: 3.4rem 1fr;
  align-items: center; column-gap: .85rem;
  margin: 0; padding: .45rem .9rem .45rem .45rem;
  border: 1px solid var(--hairline); border-radius: var(--r-lg);
  background: var(--surface-soft);
  color: inherit; text-decoration: none;
  transition: border-color .15s ease, background .15s ease;
}
.short-th {
  position: relative; display: block; overflow: hidden;
  aspect-ratio: 9 / 16; border-radius: var(--r-md);
  background: var(--code-bg);
}
.short-th img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* odznak odlisi short od celeho videa, ked maju rovnaky tvar karty */
.short-tag {
  position: absolute; left: .22rem; top: .22rem; z-index: 1;
  display: flex; align-items: center; gap: .18rem;
  padding: .06rem .28rem; border-radius: 999px;
  background: rgba(20, 20, 19, .7);
  font-family: var(--font-mono); font-size: .5rem; letter-spacing: .07em;
  text-transform: uppercase; color: #faf9f5;
}
.short-tag::before { content: ""; width: .25rem; height: .42rem; border-radius: 1px; background: var(--primary); }

.short-body { display: block; min-width: 0; }
.short-cap {
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: .86rem; font-weight: 500; line-height: 1.35; color: var(--ink);
}
.short-meta {
  display: block; margin-top: .25rem;
  font-family: var(--font-mono); font-size: .64rem; line-height: 1.5; color: var(--muted-soft);
}
.short-who { display: inline; margin-right: .4rem; letter-spacing: .06em; }

@media (hover: hover) {
  .short:hover { border-color: color-mix(in srgb, var(--primary) 50%, transparent); background: var(--surface-card); }
}
.short:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* --- video aj short sa prehravaju v svetelnom boxe, lisi sa len pomer --- */
.vlb {
  position: fixed; inset: 0; z-index: 60;
  display: grid; place-items: center; padding: 1.2rem;
  background: color-mix(in srgb, var(--canvas) 14%, rgba(10, 10, 9, .86));
  animation: vlb-in .16s ease;
}
@keyframes vlb-in { from { opacity: 0 } to { opacity: 1 } }
.vlb-box { width: min(23rem, 100%); }
.vlb-box.vlb-wide { width: min(62rem, 100%, 142vh); }
.vlb-frame {
  position: relative; aspect-ratio: 9 / 16; max-height: 80vh; margin: 0 auto;
  border-radius: var(--r-xl); overflow: hidden; background: #000;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .45);
}
.vlb-wide .vlb-frame { aspect-ratio: 16 / 9; max-height: none; border-radius: var(--r-lg); }
.vlb-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.vlb-bar {
  display: flex; align-items: center; gap: .6rem; margin-top: .6rem;
  font-family: var(--font-mono); font-size: .66rem; color: #cfcac1;
}
.vlb-bar a { color: #cfcac1; border-bottom-color: rgba(207, 202, 193, .4); }
.vlb-x {
  margin-left: auto; cursor: pointer;
  border: 1px solid rgba(250, 249, 245, .22); border-radius: var(--r-sm);
  background: transparent; color: #faf9f5;
  font-family: var(--font-mono); font-size: .66rem; padding: .15rem .55rem;
}
@media (hover: hover) { .vlb-x:hover { border-color: #faf9f5; } }

@media (prefers-reduced-motion: reduce) {
  .vid, .vid-play, .short-th, .vlb { transition: none; animation: none; }
}

/* ---------- poznamka ---------- */
.note {
  background: color-mix(in srgb, var(--primary) 9%, var(--canvas));
  border: 1px solid color-mix(in srgb, var(--primary) 24%, transparent);
  border-radius: var(--r-lg);
  padding: 1rem 1.15rem; margin: 0 0 1.6rem;
  font-size: .95rem; color: var(--body);
}
.note p:last-child { margin-bottom: 0; }

/* ---------- kroky ---------- */
.flow { list-style: none; padding: 0; margin: 0 0 1.6rem; counter-reset: step; }
.flow li {
  position: relative; padding: 1.05rem 0 1.05rem 2.6rem;
  border-bottom: 1px solid var(--hairline); margin: 0;
}
.flow li:last-child { border-bottom: 0; }
.flow li p:last-child { margin-bottom: 0; }
.flow li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 1.15rem;
  width: 1.6rem; height: 1.6rem; border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--primary) 40%, transparent);
  background: transparent;
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: .7rem; color: var(--primary);
}

/* ---------- obrazky ---------- */
figure { margin: 0 0 1.8rem; }
figure img {
  display: block;
  /* nikdy neroztahovat nad prirodzenu velkost a nedat obrazku prerast obrazovku */
  width: auto; height: auto;
  max-width: 100%;
  max-height: min(24rem, 58vh);
  margin-inline: auto;
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  background: var(--surface-card);
}
figcaption {
  font-size: .82rem; color: var(--muted-soft); margin-top: .65rem;
  padding-left: .85rem; border-left: 2px solid var(--hairline);
}

/* vysoke diagramy netiahnut cez celu sirku, ale nechat ich citatelne */
figure.tall img { max-width: 22rem; max-height: min(36rem, 74vh); }

/* ---------- rozcestnik ---------- */

/* ---------- prev / next ---------- */
.pager {
  display: grid; gap: .85rem;
  margin-top: 4.5rem; padding-top: 2rem;
  border-top: 1px solid var(--hairline);
}
@media (min-width: 640px) {
  .pager { grid-template-columns: 1fr 1fr; }
  .pager .next { grid-column: 2; }
}
.pager a {
  border: 1px solid var(--hairline); border-radius: var(--r-lg);
  background: var(--surface-soft);
  padding: 1rem 1.2rem; text-decoration: none; color: inherit;
  transition: border-color .15s ease, background .15s ease;
}
@media (hover: hover) {
  .pager a:hover { border-color: color-mix(in srgb, var(--primary) 45%, transparent); background: var(--surface-card); }
}
.pager .lbl {
  display: block; margin-bottom: .3rem;
  font-size: .68rem; font-weight: 500; letter-spacing: .12em; text-transform: uppercase;
  color: var(--muted-soft);
}
.pager .ttl {
  display: block; font-family: var(--font-display);
  font-size: 1.12rem; letter-spacing: -.015em; color: var(--ink);
}
.pager .next { text-align: right; }

/* ---------- mobil ---------- */
@media (max-width: 640px) {
  .wrap {
    padding: 1.75rem max(1.15rem, env(safe-area-inset-right)) 4rem max(1.15rem, env(safe-area-inset-left));
  }
  .hero { margin-bottom: 1.75rem; }
  h2 { margin: 2.6rem 0 1.05rem; padding-top: 1.4rem; }
  h3 { margin: 1.9rem 0 .5rem; }
  .kind { padding: 1.1rem 1.15rem; }
  .note { padding: .9rem 1rem; }
  .chan { padding: .95rem 1rem; column-gap: .85rem; grid-template-columns: 2.6rem 1fr; }
  .chan-ava { width: 2.6rem; height: 2.6rem; }
  .flow li { padding: .95rem 0 .95rem 2.4rem; }
  figure { margin-bottom: 1.4rem; }
  .term .term-body { white-space: pre-wrap; }
  .pager { margin-top: 3.25rem; }
}

@media (max-width: 380px) {
  body { font-size: 16px; }
  .cmd pre, .term { font-size: .78rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}