/* Nina na Zélandu: barvy hor, moře a buše */
:root {
  --les: #0f5c55;
  --tyrkys: #2bb3a3;
  --more: #1b6f93;
  --pisek: #f6f1e7;
  --papir: #ffffff;
  --text: #1d2b2a;
  --tlumene: #5d6f6c;
  --sede: #c9d1cf;
  --stin: 0 1px 2px rgb(15 60 55 / .06), 0 6px 20px rgb(15 60 55 / .08);
  --barva: var(--tyrkys);
  --radius: 18px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--pisek);
  line-height: 1.55;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--more); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .4em; letter-spacing: -.01em; }
h1 { font-size: clamp(1.7rem, 6vw, 2.4rem); }

/* Hlavička a patička */
.hlavicka {
  background: linear-gradient(135deg, var(--les), var(--more));
  color: #fff;
  padding: 14px 16px;
}
.hlavicka__logo {
  display: inline-flex; align-items: center; gap: 10px;
  color: #fff; text-decoration: none; font-weight: 700; font-size: 1.1rem;
}
.hlavicka__hory { width: 40px; color: #7fd6c2; }
.obsah { width: 100%; max-width: 760px; margin: 0 auto; padding: 20px 16px 48px; flex: 1; }
.paticka { color: var(--les); text-align: center; font-size: .9rem; margin-top: 24px; }
.paticka__vlny { display: block; width: 100%; height: 28px; color: var(--les); }
.paticka p { margin: 0; padding: 14px 16px 24px; background: var(--les); color: #d6efe9; }

.nadpis-sekce { font-size: 1.15rem; margin: 32px 0 12px; color: var(--les); }
.stitek { margin: 0 0 4px; font-size: .8rem; font-weight: 600; color: var(--barva); text-transform: uppercase; letter-spacing: .04em; }
.meta { color: var(--tlumene); font-size: .9rem; margin: 4px 0 0; }
.prazdne { text-align: center; color: var(--tlumene); padding: 24px 0; }
.zpet { display: inline-block; margin-bottom: 12px; text-decoration: none; font-weight: 600; }

/* Úvod s kruhovým ukazatelem */
.uvod {
  display: flex; align-items: center; gap: 20px;
  background: var(--papir); border-radius: var(--radius); box-shadow: var(--stin);
  padding: 20px;
  background-image: radial-gradient(circle at 100% 0, rgb(43 179 163 / .14), transparent 55%);
}
.uvod__text { flex: 1; }
.uvod p { margin: 0; color: var(--tlumene); }
.kruh { position: relative; width: 112px; flex: none; }
.kruh svg { transform: rotate(-90deg); display: block; }
.kruh circle { fill: none; stroke-width: 11; }
.kruh__pozadi { stroke: #e3ece9; }
.kruh__postup {
  stroke: var(--tyrkys); stroke-linecap: round;
  stroke-dasharray: calc(var(--procento) * 1) 100;
  animation: kruh-naplneni 1.2s ease-out;
}
@keyframes kruh-naplneni { from { stroke-dasharray: 0 100; } }
.kruh__cislo { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; }
.kruh__cislo strong { font-size: 2rem; color: var(--les); line-height: 1; }
.kruh__cislo span { color: var(--tlumene); font-size: .9rem; }

/* Karty skupin */
.skupiny { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.skupina-karta {
  display: flex; flex-direction: column; gap: 4px;
  background: var(--papir); border-radius: var(--radius); box-shadow: var(--stin);
  padding: 16px; text-decoration: none; color: var(--text);
  border-top: 6px solid var(--barva);
  transition: transform .15s ease;
}
.skupina-karta:hover { transform: translateY(-2px); }
.skupina-karta__ikona { font-size: 2rem; }
.skupina-karta__nazev { font-weight: 700; font-size: 1.05rem; }
.skupina-karta__sloveso { color: var(--barva); font-weight: 600; font-size: .9rem; }
.skupina-karta__stav { color: var(--tlumene); font-size: .85rem; }
.body { display: flex; gap: 5px; margin-top: 6px; }
.bod { width: 100%; height: 8px; border-radius: 4px; background: #e3e8e6; }
.bod--splneno { background: var(--barva); }
.bod--odemceno { background: color-mix(in srgb, var(--barva) 35%, #fff); }

/* Příspěvky */
.prispevky { display: grid; gap: 14px; }
.prispevek-karta {
  display: grid; background: var(--papir); border-radius: var(--radius); box-shadow: var(--stin);
  overflow: hidden; text-decoration: none; color: var(--text);
}
.prispevek-karta__foto img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.prispevek-karta__text { padding: 14px 16px 16px; }
.prispevek-karta__text h3 { margin: 0 0 4px; }
.prispevek-karta__text p { margin: 0 0 4px; }
@media (min-width: 620px) {
  .prispevek-karta { grid-template-columns: 220px 1fr; }
  .prispevek-karta__foto img { height: 100%; aspect-ratio: auto; }
}

/* Stránka skupiny */
.skupina-hlava {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--papir); border-radius: var(--radius); box-shadow: var(--stin); padding: 20px;
  border-left: 6px solid var(--barva);
}
.skupina-hlava p { margin: 0; color: var(--tlumene); }
.skupina-hlava__ikona { font-size: 2.6rem; line-height: 1; }
.ukazatel { height: 10px; background: #e3e8e6; border-radius: 5px; margin-top: 14px; overflow: hidden; }
.ukazatel span { display: block; height: 100%; background: var(--barva); border-radius: 5px; }

/* Cesta: úkoly od nejlehčího po nejtěžší */
.cesta { list-style: none; margin: 28px 0 0; padding: 0; position: relative; }
.cesta::before {
  content: ""; position: absolute; left: 27px; top: 28px; bottom: 28px;
  border-left: 4px dashed color-mix(in srgb, var(--barva) 40%, #fff);
}
.ukol { position: relative; display: flex; gap: 14px; align-items: center; margin-bottom: 18px; }
.ukol__znak {
  position: relative; z-index: 1; flex: none;
  width: 58px; height: 58px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--papir); border: 4px solid var(--barva); color: var(--barva);
  font-weight: 800; font-size: 1.3rem;
}
.ukol__znak > * { grid-area: 1 / 1; }
.ukol__zamek, .ukol__fajfka { width: 26px; height: 26px; }
.ukol__zamek, .ukol__fajfka, .ukol__cislo { opacity: 0; }
.ukol__karta {
  flex: 1; min-width: 0; background: var(--papir); border-radius: var(--radius); box-shadow: var(--stin);
  padding: 14px 16px; text-decoration: none; color: var(--text);
}
.ukol__karta h2 { font-size: 1.1rem; margin: 0; }
.ukol__karta p:not(.stitek):not(.meta) { margin: 4px 0 0; color: var(--tlumene); font-size: .95rem; }

.ukol--splneno .ukol__znak { background: var(--barva); color: #fff; }
.ukol--splneno .ukol__fajfka { opacity: 1; }
.ukol--odemceno .ukol__cislo { opacity: 1; }
.ukol--odemceno .ukol__znak { animation: pulz 2.4s ease-in-out infinite; }
.ukol--odemceno .ukol__karta { outline: 2px solid var(--barva); }
.ukol--zamceno .ukol__znak { border-color: var(--sede); color: #98a5a2; background: #eef1f0; }
.ukol--zamceno .ukol__zamek { opacity: 1; }
.ukol--zamceno .ukol__karta { background: #eef1f0; box-shadow: none; color: #8a9794; }
.ukol--zamceno .stitek { color: #8a9794; }

@keyframes pulz {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--barva) 45%, transparent); }
  50% { box-shadow: 0 0 0 10px transparent; }
}

/* Odměna: zámek se zatřese, otevře a zmizí, pak naskočí fajfka nebo číslo */
.cerstve .ukol__zamek { animation: zamek-pryc 1.1s ease forwards; animation-delay: calc(var(--poradi-animace, 0) * .5s + .3s); opacity: 1; }
.cerstve .ukol__oblouk { animation: oblouk-otevrit 1.1s ease forwards; animation-delay: inherit; transform-origin: 16px 11px; }
.cerstve .ukol__fajfka, .cerstve .ukol__cislo { opacity: 0; }
.ukol--splneno.cerstve .ukol__fajfka,
.ukol--odemceno.cerstve .ukol__cislo { animation: naskocit .5s cubic-bezier(.3, 1.6, .5, 1) forwards; animation-delay: calc(var(--poradi-animace, 0) * .5s + 1.2s); }
.ukol--splneno.cerstve .ukol__znak { animation: obarvit 1.6s ease both; animation-delay: calc(var(--poradi-animace, 0) * .5s); }
.ukol.cerstve .ukol__karta { animation: rozsvitit 1.2s ease both; animation-delay: calc(var(--poradi-animace, 0) * .5s + 1s); }

@keyframes zamek-pryc {
  0% { transform: none; opacity: 1; }
  10%, 30% { transform: rotate(-12deg); }
  20%, 40% { transform: rotate(12deg); }
  50% { transform: none; opacity: 1; }
  100% { transform: translateY(-14px) scale(.6); opacity: 0; }
}
@keyframes oblouk-otevrit { 0%, 45% { transform: none; } 70%, 100% { transform: translateY(-4px) rotate(-25deg); } }
@keyframes naskocit { from { opacity: 0; transform: scale(.2); } to { opacity: 1; transform: scale(1); } }
@keyframes obarvit {
  0%, 60% { background: #eef1f0; border-color: var(--sede); color: #98a5a2; }
  100% { background: var(--barva); border-color: var(--barva); color: #fff; }
}
@keyframes rozsvitit { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--barva) 60%, transparent); } 100% { box-shadow: var(--stin), 0 0 0 14px transparent; } }

.jiskra {
  position: absolute; width: 10px; height: 10px; border-radius: 2px; pointer-events: none; z-index: 2;
  background: var(--c); animation: jiskra .9s ease-out forwards;
}
@keyframes jiskra {
  from { transform: translate(0, 0) rotate(0); opacity: 1; }
  to { transform: translate(var(--x), var(--y)) rotate(200deg); opacity: 0; }
}

/* Detail úkolu */
.detail__hlava {
  background: var(--papir); border-radius: var(--radius); box-shadow: var(--stin); padding: 20px;
  border-top: 6px solid var(--barva);
}
.detail__zadani { margin: 0; color: var(--tlumene); }
.detail__prispevek, .detail__ceka { margin-top: 18px; }
.detail__ceka { background: var(--papir); border-radius: var(--radius); padding: 18px 20px; color: var(--tlumene); }
.odznak {
  display: inline-block; margin: 0; padding: 6px 14px; border-radius: 999px;
  background: var(--barva); color: #fff; font-weight: 700;
  animation: naskocit .6s cubic-bezier(.3, 1.6, .5, 1);
}
.detail__text { margin-top: 16px; font-size: 1.05rem; }
.detail__text p { margin: 0 0 1em; }
.galerie { display: grid; gap: 8px; margin-top: 16px; grid-template-columns: repeat(2, 1fr); }
.galerie--jedna { grid-template-columns: 1fr; }
.galerie__foto { display: block; border-radius: 12px; overflow: hidden; background: #e3e8e6; }
.galerie__foto img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; transition: transform .3s ease; }
.galerie--jedna .galerie__foto img { aspect-ratio: auto; }
.galerie__foto:hover img { transform: scale(1.03); }
/* Při lichém počtu fotek je první přes celou šířku, ať nezůstane díra */
.galerie--licha .galerie__foto:first-child { grid-column: 1 / -1; }
.galerie--licha .galerie__foto:first-child img { aspect-ratio: 16 / 9; }

.lightbox { border: 0; padding: 0; background: transparent; max-width: 96vw; max-height: 92dvh; }
.lightbox::backdrop { background: rgb(5 25 25 / .88); }
.lightbox img { max-width: 96vw; max-height: 92dvh; object-fit: contain; border-radius: 8px; }
.lightbox__zavrit {
  position: fixed; top: 12px; right: 12px; width: 44px; height: 44px; border-radius: 50%; border: 0;
  background: rgb(255 255 255 / .9); font-size: 1.2rem; cursor: pointer;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; animation-delay: 0s !important; transition: none !important; }
}