* {
    margin: 0;
    padding: 0;
    border: 0;
    box-sizing: border-box;
}

.main-section-wrapper {
    max-width: 1600px;
    margin: 0 auto;
    font-family: Arial, Helvetica, sans-serif;
}

/* ------- SLIDES -------
   Originalna slika: 1600 x 850 px (omjer 850 / 1600 = 53.125%).
   Do 1200px slide je fiksan 1600 x 850 i centriran.
   Tek od 1199px naniže (media-query.css) prelazi na proporcionalno
   skaliranje po širini i visini. */
.slide-1,
.slide-2,
.slide-3 {
    position: relative;
    width: 100%;
    max-width: 1600px;
    height: 850px;
    margin: 0 auto 3px;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
}

.slide-1 {
    background-image: url(../images/slide-1.jpg);
}

.slide-2 {
    background-image: url(../images/slide-2.jpg);
}

.slide-3 {
    background-image: url(../images/slide-3.jpg);
}

.slide-1 > a,
.slide-2 > a,
.slide-3 > a {
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    width: 100%;
    height: 100%;
    z-index: 2;
}

/* ------- ANIMACIJA "KOCKE SE SLAŽU" -------
   JS (assets/js/slides.js) generira .slide-tiles mrežu 4x2 pločica
   unutar svakog slidea. Svaka pločica ima istu sliku s pomaknutim
   background-position pa zajedno čine cijelu sliku. Kad slide uđe u
   viewport, dodaje se .in-view i pločice ulijeću sa staggerom. */
/* Puna slika iza pločica (razvučena isto kao pločice) — pojavi se kad
   se pločice slože i popuni subpikselne razmake (bez bijelih crta). */
.slide-backing {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
    z-index: 0;
    opacity: 0;
    pointer-events: none;
}

.has-tiles.in-view .slide-backing {
    opacity: 1;
    transition: opacity .35s ease;
    transition-delay: .55s;
}

.slide-tiles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 1fr);
    z-index: 1;
    pointer-events: none;
}

.slide-tile {
    display: block;
    width: 100%;
    height: 100%;
    background-repeat: no-repeat;
    will-change: transform, opacity;
}

@media (prefers-reduced-motion: no-preference) {
    .has-tiles .slide-tile {
        opacity: 0;
        transform: translateY(45px) scale(.8) rotate(-3deg);
    }

    .has-tiles.in-view .slide-tile {
        animation: tileIn .65s cubic-bezier(.2, .7, .25, 1) forwards;
    }
}

@keyframes tileIn {
    0%   { opacity: 0; transform: translateY(45px) scale(.8) rotate(-3deg); }
    60%  { opacity: 1; }
    100% { opacity: 1; transform: translateY(0) scale(1) rotate(0); }
}

/* ------- FOOTER ------- */
.slide-footer {
    background: #000;
    color: #fff;
    text-align: center;
    padding: 45px 20px 55px;
}

.slide-footer .container {
    max-width: 920px;
    margin: 0 auto;
}

.slide-footer p {
    font-size: 18px;
    line-height: 1.5;
    margin-bottom: 18px;
}

.slide-footer p.highlight {
    font-weight: bold;
    font-size: 23px;
    margin-bottom: 23px;
}

.slide-footer a {
    text-decoration: none;
}

.slide-footer p a {
    color: #fff;
    text-decoration: underline;
}

.slide-footer p a:hover {
    text-decoration: none;
}

.slide-footer a.rules {
    display: table;
    margin: 0 auto 26px;
    padding: 11px 26px;
    background: #4d4d4d;
    color: #fff;
    border-radius: 4px;
    font-size: 15px;
    text-decoration: underline;
}

.slide-footer a.rules:hover {
    text-decoration: none;
}

.slide-footer a.register {
    display: table;
    margin: 0 auto;
    padding: 14px 42px;
    background: #e30613;
    color: #fff;
    border-radius: 6px;
    font-size: 22px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: .5px;
}