/*
 * LISTOVACÍ KATALÓG (Vojto 6. 10. 2026) - catalog/katalog.blade.php
 * Tmavá plocha cez celú obrazovku, strany v strede, šípky po stranách,
 * počítadlo vľavo hore, biela lišta s ovládaním dole.
 */
*, *::before, *::after { box-sizing: border-box; }

html, body.kt {
    height: 100%;
    margin: 0;
    overflow: hidden;
    background: #3E4245;
    font-family: "Open Sans", Arial, sans-serif;
    color: #FFFFFF;
}

.kt-plocha {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
}

.kt-pocitadlo {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 5;
    padding: 10px 14px;
    background: #2B2E30;
    font-size: 15px;
    font-weight: 700;
}

/* Scéna: strany v strede; pri priblížení sa dá posúvať. */
.kt-scena {
    position: relative;
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
    display: flex;
    padding: 10px 70px;
}

.kt-rozlozenie {
    display: flex;
    margin: auto;
}

/* Tieň má každá strana zvlášť - prázdne miesto vedľa obálky a poslednej
   strany (kt-prazdna) je priehľadné. */
.kt-strana {
    position: relative;
    background: #FFFFFF;
    box-shadow: 0 10px 40px rgba(0, 0, 0, .45);
}

.kt-strana.kt-prazdna {
    background: transparent;
    box-shadow: none;
}

.kt-strana canvas {
    display: block;
}

.kt-strana.je-nacitava::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 36px;
    height: 36px;
    margin: -18px 0 0 -18px;
    border: 3px solid #DDDDDD;
    border-top-color: #555555;
    border-radius: 50%;
    animation: kt-tocit .8s linear infinite;
}

@keyframes kt-tocit { to { transform: rotate(360deg); } }

/* Šípky po stranách. */
.kt-sipka {
    position: absolute;
    top: 50%;
    z-index: 4;
    width: 54px;
    height: 80px;
    margin-top: -40px;
    padding: 0;
    border: 0;
    background: none;
    color: #FFFFFF;
    cursor: pointer;
    opacity: .85;
}

.kt-sipka:hover { opacity: 1; }
.kt-sipka:disabled { opacity: .2; cursor: default; }
.kt-sipka svg { width: 44px; height: 44px; }
.kt-sipka--vlavo { left: 8px; }
.kt-sipka--vpravo { right: 8px; }

/* Lišta dole. */
.kt-lista {
    flex: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 22px;
    height: 54px;
    background: #FFFFFF;
}

.kt-lista button,
.kt-lista a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: 0;
    border-radius: 6px;
    background: none;
    color: #222222;
    cursor: pointer;
}

.kt-lista button:hover,
.kt-lista a:hover,
.kt-lista button.je-aktivne { background: #EEEEEE; }
.kt-lista svg { width: 24px; height: 24px; }
.kt-lista .kt-pauza { display: none; }
.kt-lista .je-prehrava .kt-play { display: none; }
.kt-lista .je-prehrava .kt-pauza { display: block; }

/* Zoznam strán a hľadanie - vrstva cez plochu. */
.kt-zoznam,
.kt-hladanie {
    position: absolute;
    inset: 0 0 54px 0;
    z-index: 10;
    overflow-y: auto;
    padding: 70px 40px 40px;
    background: rgba(40, 42, 44, .92);
    backdrop-filter: blur(6px);
}

.kt-zoznam[hidden],
.kt-hladanie[hidden] { display: none; }

.kt-zavriet {
    position: fixed;
    top: 16px;
    right: 22px;
    z-index: 11;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    background: none;
    color: #FFFFFF;
    cursor: pointer;
}

.kt-zavriet svg { width: 32px; height: 32px; }

.kt-mriezka {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 22px;
    max-width: 1400px;
    margin: 0 auto;
}

.kt-nahlad {
    position: relative;
    display: block;
    aspect-ratio: 1060 / 1500;
    padding: 0;
    border: 0;
    background: #F2F2F2;
    box-shadow: 0 3px 10px rgba(0, 0, 0, .35);
    cursor: pointer;
}

.kt-nahlad {
    overflow: hidden;
}

/* Rozmer náhľadu určuje dlaždica, nie vykreslenie (inline štýl z JS). */
.kt-nahlad img,
.kt-nahlad canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
    object-fit: contain;
}

.kt-nahlad span {
    position: absolute;
    right: 4px;
    bottom: 4px;
    padding: 1px 6px;
    background: #222222;
    font-size: 13px;
    font-weight: 700;
    color: #FFFFFF;
}

.kt-nahlad.je-aktualna { outline: 3px solid #FFFFFF; }

.kt-hladanie-pole {
    display: flex;
    gap: 10px;
    max-width: 700px;
    margin: 0 auto 24px;
}

.kt-hladanie-pole input {
    flex: 1;
    height: 45px;
    padding: 0 20px;
    border: 0;
    border-radius: 10px;
    font: inherit;
    font-size: 16px;
}

.kt-hladanie-pole button {
    height: 45px;
    padding: 0 22px;
    border: 0;
    border-radius: 10px;
    background: #E4202A;
    font: inherit;
    font-weight: 700;
    color: #FFFFFF;
    cursor: pointer;
}

.kt-vysledky {
    max-width: 700px;
    margin: 0 auto;
    padding: 0;
    list-style: none;
}

.kt-vysledky li + li { margin-top: 8px; }

.kt-vysledky button {
    width: 100%;
    padding: 12px 16px;
    border: 0;
    border-radius: 8px;
    background: rgba(255, 255, 255, .08);
    font: inherit;
    font-size: 14px;
    color: #FFFFFF;
    text-align: left;
    cursor: pointer;
}

.kt-vysledky button:hover { background: rgba(255, 255, 255, .16); }
.kt-vysledky strong { display: block; margin-bottom: 4px; font-size: 15px; }
.kt-vysledky mark { background: #FFE14D; color: #000000; }
.kt-vysledky .kt-prazdne { padding: 12px 16px; color: #BBBBBB; }

@media (max-width: 767px) {
    .kt-scena { padding: 8px 4px; }
    .kt-sipka { width: 40px; }
    .kt-sipka svg { width: 32px; height: 32px; }
    .kt-sipka--vlavo { left: 0; }
    .kt-sipka--vpravo { right: 0; }
    .kt-lista { gap: 8px; }
    .kt-zoznam, .kt-hladanie { padding: 70px 14px 20px; }
    .kt-mriezka { grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); gap: 12px; }
}

/* Listovanie strán (Trello 8W1VSGXV, 6. 10. 2026): list sa otočí cez chrbát
   knihy v 3D, odkrývaná strana má tieň, zadná strana listu tieň od chrbta. */
.kt-rozlozenie {
    position: relative;
    perspective: 2600px;
}

.kt-list {
    position: absolute;
    top: 0;
    z-index: 3;
    transform-style: preserve-3d;
    transition: transform .7s cubic-bezier(.45, .05, .35, 1);
}

.kt-list--dopredu { transform-origin: left center; }
.kt-list--dozadu { transform-origin: right center; }
.kt-list--dopredu.je-otocene { transform: rotateY(-180deg); }
.kt-list--dozadu.je-otocene { transform: rotateY(180deg); }

.kt-list-strana {
    position: absolute;
    inset: 0;
    overflow: hidden;
    background: #FFFFFF;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.kt-list-zadna { transform: rotateY(180deg); }

/* Ohyb: svetlo a tieň na liste počas otáčania. */
.kt-list-strana::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0;
    transition: opacity .35s ease-in;
}

.kt-list--dopredu .kt-list-predna::after { background: linear-gradient(to right, rgba(0,0,0,.25), rgba(0,0,0,0) 35%, rgba(255,255,255,.15) 75%, rgba(0,0,0,.05)); }
.kt-list--dopredu .kt-list-zadna::after { background: linear-gradient(to left, rgba(0,0,0,.3), rgba(0,0,0,0) 40%); }
.kt-list--dozadu .kt-list-predna::after { background: linear-gradient(to left, rgba(0,0,0,.25), rgba(0,0,0,0) 35%, rgba(255,255,255,.15) 75%, rgba(0,0,0,.05)); }
.kt-list--dozadu .kt-list-zadna::after { background: linear-gradient(to right, rgba(0,0,0,.3), rgba(0,0,0,0) 40%); }
.kt-list.je-otocene .kt-list-strana::after { opacity: 1; }

.kt-list-tien {
    position: absolute;
    top: 0;
    bottom: 0;
    z-index: 2;
    pointer-events: none;
    animation: kt-tien .7s ease-in-out forwards;
}

.kt-list-tien--vpravo { right: 0; background: linear-gradient(to right, rgba(0,0,0,.35), rgba(0,0,0,0) 60%); }
.kt-list-tien--vlavo { left: 0; background: linear-gradient(to left, rgba(0,0,0,.35), rgba(0,0,0,0) 60%); }

@keyframes kt-tien {
    0% { opacity: .9; }
    100% { opacity: 0; }
}

/* Mobil / obálka - nová strana vojde zo strany. */
.kt-posun-z-prava > * { animation: kt-z-prava .35s ease-out; }
.kt-posun-z-lava > * { animation: kt-z-lava .35s ease-out; }

@keyframes kt-z-prava { from { transform: translateX(40%); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes kt-z-lava { from { transform: translateX(-40%); opacity: 0; } to { transform: none; opacity: 1; } }