/*
 * stranky/predpo.css - porovnani pred / po (posuvnik), D-015.
 *
 * Komponenta k assets/pmc/pmc-predpo.js. Vstup je blok Builderu "columns"
 * s customClass "pmc-predpo" (sloupec .pmc-predpo-pred, sloupec .pmc-predpo-po,
 * odstavec .pmc-predpo-stitek). Trida .is-predpo prijde az z JS; bez ni
 * (a v editoru Builderu) zustanou dva sloupce vedle sebe.
 *
 * Zamer (Roman: "stara / nova Praha"): obe vrstvy ukazuji tutez fotku ve stejnem
 * vyrezu, takze posun cary odhaluje promenu tehoz mista. Vlevo od cary novy web
 * (ostra fotka, velky nadpis), vpravo stary web (vybledla nizke rozliseni,
 * modry pruh, Times a Verdana). Ze stare ShopMC titulky (sekce "design-lab")
 * prevzato: rozdeleni plochy, cara s kolecken, spodni jezdec s popisky.
 * Plna sirka: plocha = sirka obsahu (okraj --pmc-okraj), vyska roste s oknem.
 */

/* =========================================================
   Sekce titulky (tmava) - jen mc/index.php, blok blk_tit_predpo
   ========================================================= */
.tit .cmc-b-document .tit-predpo { background: var(--pmc-cerna); color: var(--pmc-bila); }
.tit .cmc-b-document .tit-predpo h2 { color: var(--pmc-bila); }
.tit .cmc-b-document .tit-predpo .pmc-sloupce-text .cmc-b-paragraph { color: var(--pmc-text-tlumeny-inverz); }
.tit .cmc-b-document .tit-predpo .pmc-sloupce-text { margin-bottom: clamp(32px, 3.125vw, 80px); }

/* =========================================================
   Bez JS / editor: dva tmave sloupce vedle sebe
   ========================================================= */
.cmc-b-document .pmc-predpo:not(.is-predpo) > .cmc-b-column { background: #1c1c1c; color: var(--pmc-bila, #fff); }
.cmc-b-document .pmc-predpo:not(.is-predpo) > .cmc-b-column h3 { color: inherit; }
.cmc-b-document .pmc-predpo:not(.is-predpo) .cmc-b-image { margin: 12px 0; }
.cmc-b-document .pmc-predpo:not(.is-predpo) .cmc-b-image img { width: 100%; height: auto; }

/* =========================================================
   Plocha porovnani
   ========================================================= */
.cmc-b-document .pmc-predpo.is-predpo {
  --predpo: 50%;
  --predpo-vyska: clamp(440px, 44vw, 1100px);      /* 845 px pri 1920, 634 pri 1440 */
  --predpo-obr-pos: 50% 50%;                       /* stejny vyrez v obou vrstvach */
  --predpo-vnitrni: clamp(20px, 2.5vw, 72px);      /* vnitrni okraj obsahu vrstev */
  --predpo-kolecko: clamp(56px, 3.75vw, 88px);     /* 72 px pri 1920 */
  --predpo-plynule: .5s cubic-bezier(.22, .61, .36, 1);
  position: relative; display: block;
  height: var(--predpo-vyska);
  margin: 0; padding: 0; gap: 0;
  overflow: hidden; isolation: isolate;
  border-radius: var(--pmc-radius-karta, 6px);
  background: #111;
  cursor: ew-resize;
  touch-action: pan-y;                             /* svisly posun stranky zustava, vodorovny tah = cara */
  user-select: none; -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.cmc-b-document .pmc-predpo.is-predpo > .cmc-b-column {
  position: absolute; inset: 0;
  margin: 0; padding: var(--predpo-vnitrni);
  border: 0; border-radius: 0;
  overflow: hidden;
}
.cmc-b-document .pmc-predpo.is-predpo .cmc-b-image { margin: 0; }
.cmc-b-document .pmc-predpo.is-predpo img { -webkit-user-drag: none; user-select: none; pointer-events: none; }

/* Stitky (editovatelne odstavce) */
.cmc-b-document .pmc-predpo.is-predpo .pmc-predpo-stitek {
  position: absolute; z-index: 3; top: var(--predpo-vnitrni);
  margin: 0; padding: 8px 16px; border-radius: var(--pmc-radius-pill, 999px);
  font-family: var(--pmc-pismo); font-size: var(--pmc-fs-maly); line-height: 1.2; letter-spacing: .02em;
  white-space: nowrap; pointer-events: none;
}

/* ---------- Vrstva PO (novy web): vlevo od cary ---------- */
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-po {
  z-index: 2;
  clip-path: inset(0 calc(100% - var(--predpo)) 0 0);
  background: #000; color: var(--pmc-bila);
  display: flex; flex-direction: column; justify-content: flex-end; align-items: flex-start;
}
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-po .cmc-b-image { position: absolute; inset: 0; z-index: 0; }
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-po .cmc-b-image img {
  width: 100%; height: 100%; max-width: none; object-fit: cover; object-position: var(--predpo-obr-pos);
}
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-po::after {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, .70) 0%, rgba(0, 0, 0, .34) 42%, rgba(0, 0, 0, 0) 72%),
    linear-gradient(0deg, rgba(0, 0, 0, .55) 0%, rgba(0, 0, 0, 0) 45%);
}
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-po > :not(.cmc-b-image):not(.pmc-predpo-stitek) { position: relative; z-index: 2; }
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-po h3 {
  max-width: 12ch; margin: 0 0 clamp(12px, 1.0417vw, 28px);
  color: var(--pmc-bila);
  font-family: var(--pmc-pismo); font-weight: var(--pmc-pismo-vaha-nadpis);
  font-size: var(--pmc-fs-h1); line-height: var(--pmc-lh-h1); letter-spacing: var(--pmc-ls-h1);
}
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-po .cmc-b-paragraph:not(.pmc-predpo-stitek) {
  max-width: 34ch; font-size: var(--pmc-fs-text); line-height: var(--pmc-lh-text); color: var(--pmc-text-tlumeny-inverz);
}
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-po .pmc-predpo-stitek {
  left: var(--predpo-vnitrni);
  background: rgba(0, 0, 0, .42); color: var(--pmc-bila);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .45);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}

/* ---------- Vrstva PRED (stary web): vpravo od cary ---------- */
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-pred {
  z-index: 1;
  background: #d9d3c7; color: #222;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: auto 1fr auto; grid-template-areas: "hlava hlava" "nic nic" ". text";
  padding: 0;
}
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-pred .cmc-b-image { position: absolute; inset: 0; z-index: 0; }
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-pred .cmc-b-image img {
  width: 100%; height: 100%; max-width: none; object-fit: cover; object-position: var(--predpo-obr-pos);
  /* stara fotka: vybledla, nizky kontrast, mekka */
  filter: sepia(.55) saturate(.55) contrast(.78) brightness(1.08) blur(.6px);
}
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-pred::after {
  /* zrno a vinetace stare fotky */
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 50%, rgba(0, 0, 0, 0) 55%, rgba(60, 40, 10, .38) 100%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, .05) 0 1px, rgba(0, 0, 0, 0) 1px 3px);
}
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-pred > :not(.cmc-b-image):not(.pmc-predpo-stitek) { position: relative; z-index: 2; }
/* Modry pruh stareho webu s nadpisem v Times */
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-pred h3 {
  grid-area: hlava; margin: 0;
  padding: clamp(14px, 1.25vw, 30px) var(--predpo-vnitrni) clamp(30px, 2.4vw, 56px);
  background: linear-gradient(180deg, #3a5f9e 0%, #1f3b70 100%);
  border-bottom: 3px solid #f2c94c;
  color: #fff; font-family: "Times New Roman", Times, Georgia, serif; font-weight: 700; font-style: italic;
  font-size: clamp(22px, 1.875vw, 46px); line-height: 1.1; letter-spacing: 0;
  text-align: right; text-shadow: 1px 1px 0 #0d1d3a;
}
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-pred h3::after {
  /* dekorativni menu stareho webu (neni obsah, cteckam skryto) */
  content: "Úvod | O nás | Služby | Fotogalerie | Kontakt" / "";
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 4px var(--predpo-vnitrni);
  background: #c7d3e8; color: #1f3b70;
  font: 700 clamp(11px, .7292vw, 16px) / 1.4 Verdana, Tahoma, sans-serif; font-style: normal;
  text-shadow: none; text-align: right; white-space: nowrap; overflow: hidden;
}
/* Textovy box stareho webu vpravo dole */
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-pred .cmc-b-paragraph:not(.pmc-predpo-stitek) {
  grid-area: text; justify-self: end;
  max-width: 36ch; margin: 0 var(--predpo-vnitrni) var(--predpo-vnitrni);
  padding: clamp(12px, .9375vw, 24px);
  background: #fffef6; border: 1px solid #8a8a8a; box-shadow: 3px 3px 0 rgba(0, 0, 0, .25);
  font-family: Verdana, Tahoma, sans-serif; font-size: clamp(12px, .7292vw, 17px); line-height: 1.45; color: #333;
}
.cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-pred .pmc-predpo-stitek {
  right: var(--predpo-vnitrni);
  top: calc(var(--predpo-vnitrni) + clamp(80px, 5.5vw, 136px));
  background: rgba(255, 255, 255, .9); color: #222;
  box-shadow: 0 1px 6px rgba(0, 0, 0, .2);
}

/* ---------- Cara a prostredni kolecko ---------- */
.cmc-b-document .pmc-predpo.is-predpo .pmc-predpo__cara {
  position: absolute; top: 0; bottom: 0; left: var(--predpo); z-index: 4; width: 0;
}
.cmc-b-document .pmc-predpo.is-predpo .pmc-predpo__cara::before {
  content: ""; position: absolute; top: 0; bottom: 0; left: -1px; width: 2px;
  background: var(--pmc-bila);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .12), 0 0 18px rgba(255, 255, 255, .45);
}
.cmc-b-document .pmc-predpo.is-predpo .pmc-predpo__kolecko {
  position: absolute; top: 50%; left: 0;
  width: var(--predpo-kolecko); height: var(--predpo-kolecko);
  transform: translate(-50%, -50%);
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, .96); color: var(--pmc-cerna);
  box-shadow: 0 8px 28px rgba(0, 0, 0, .38), 0 0 0 6px rgba(255, 255, 255, .22);
  cursor: grab; touch-action: none;
  transition: transform .2s ease, box-shadow .2s ease;
}
.cmc-b-document .pmc-predpo.is-predpo .pmc-predpo__kolecko svg { width: 46%; height: auto; display: block; }
.cmc-b-document .pmc-predpo.is-predpo .pmc-predpo__kolecko:hover { transform: translate(-50%, -50%) scale(1.06); box-shadow: 0 10px 32px rgba(0, 0, 0, .42), 0 0 0 10px rgba(255, 255, 255, .2); }
.cmc-b-document .pmc-predpo.is-predpo.is-tazeni { cursor: grabbing; }
.cmc-b-document .pmc-predpo.is-predpo.is-tazeni .pmc-predpo__kolecko { cursor: grabbing; transform: translate(-50%, -50%) scale(.94); }
.cmc-b-document .pmc-predpo.is-predpo .pmc-predpo__kolecko:focus { outline: none; }
.cmc-b-document .pmc-predpo.is-predpo .pmc-predpo__kolecko:focus-visible { outline: 3px solid var(--pmc-akcent, #006ffe); outline-offset: 5px; }

/* Plynuly presun po kliku a klavese (pri tazeni bez zpozdeni) */
.cmc-b-document .pmc-predpo.is-predpo.is-plynule > .pmc-predpo-po { transition: clip-path var(--predpo-plynule); }
.cmc-b-document .pmc-predpo.is-predpo.is-plynule .pmc-predpo__cara { transition: left var(--predpo-plynule); }

/* =========================================================
   Spodni jezdec
   ========================================================= */
.pmc-predpo-ovladani {
  display: flex; align-items: center; justify-content: center; gap: clamp(12px, 1.25vw, 32px);
  margin-top: clamp(20px, 1.6667vw, 44px);
  font-size: var(--pmc-fs-maly); line-height: var(--pmc-lh-maly);
  color: var(--pmc-text-tlumeny-inverz, rgba(255, 255, 255, .72));
}
.pmc-predpo-ovladani__popis { white-space: nowrap; }
.pmc-predpo-ovladani__jezdec {
  --predpo: 50%;
  -webkit-appearance: none; appearance: none;
  width: clamp(200px, 22vw, 560px); height: 44px; margin: 0;
  background: transparent; cursor: ew-resize;
}
.pmc-predpo-ovladani__jezdec::-webkit-slider-runnable-track {
  height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--pmc-bila, #fff) 0 var(--predpo), rgba(255, 255, 255, .28) var(--predpo) 100%);
}
.pmc-predpo-ovladani__jezdec::-moz-range-track { height: 2px; border-radius: 2px; background: rgba(255, 255, 255, .28); }
.pmc-predpo-ovladani__jezdec::-moz-range-progress { height: 2px; background: var(--pmc-bila, #fff); }
.pmc-predpo-ovladani__jezdec::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 22px; height: 22px; margin-top: -10px; border-radius: 50%;
  background: var(--pmc-bila, #fff); border: 0; box-shadow: 0 0 0 5px rgba(255, 255, 255, .18);
}
.pmc-predpo-ovladani__jezdec::-moz-range-thumb {
  width: 22px; height: 22px; border-radius: 50%; border: 0;
  background: var(--pmc-bila, #fff); box-shadow: 0 0 0 5px rgba(255, 255, 255, .18);
}
.pmc-predpo-ovladani__jezdec:focus { outline: none; }
.pmc-predpo-ovladani__jezdec:focus-visible { outline: 3px solid var(--pmc-akcent, #006ffe); outline-offset: 4px; border-radius: 4px; }

/* =========================================================
   Mobil
   ========================================================= */
@media (max-width: 760px) {
  .cmc-b-document .pmc-predpo.is-predpo {
    --predpo-vyska: clamp(440px, 135vw, 640px);    /* 527 px pri 390 */
    --predpo-obr-pos: 34% 50%;                     /* vyrez jako v hero (D-013) */
    --predpo-vnitrni: 16px;
    --predpo-kolecko: 52px;
  }
  .cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-po h3 { font-size: clamp(30px, 8.5vw, 40px); max-width: 9ch; }
  .cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-po .cmc-b-paragraph:not(.pmc-predpo-stitek) { max-width: 22ch; font-size: 15px; }
  .cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-pred { grid-template-columns: minmax(0, 1fr); grid-template-areas: "hlava" "nic" "text"; }
  .cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-pred h3::after { content: "Úvod | O nás | Služby | Kontakt" / ""; }
  .cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-pred .cmc-b-paragraph:not(.pmc-predpo-stitek) { max-width: 52%; font-size: 11px; padding: 10px; }
  .cmc-b-document .pmc-predpo.is-predpo > .pmc-predpo-pred .pmc-predpo-stitek { top: 96px; }
  .pmc-predpo-ovladani { gap: 10px; }
  .pmc-predpo-ovladani__popis { white-space: normal; max-width: 9ch; text-align: center; }
  .pmc-predpo-ovladani__jezdec { width: auto; flex: 1 1 auto; min-width: 120px; }
}

/* =========================================================
   Omezeny pohyb: zadne prechody ani zvetseni
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  .cmc-b-document .pmc-predpo.is-predpo .pmc-predpo__kolecko,
  .cmc-b-document .pmc-predpo.is-predpo.is-plynule > .pmc-predpo-po,
  .cmc-b-document .pmc-predpo.is-predpo.is-plynule .pmc-predpo__cara { transition: none; }
  .cmc-b-document .pmc-predpo.is-predpo .pmc-predpo__kolecko:hover,
  .cmc-b-document .pmc-predpo.is-predpo.is-tazeni .pmc-predpo__kolecko { transform: translate(-50%, -50%); }
}