body {
    padding: 0;
    margin: 0;
    background-color: #141414;
    overflow-x: hidden; /* Чтобы 3D не создавало полос прокрутки */
}


section {
    display: flex;
    flex-direction: column;
}

section.mainframe {
    width: 100%;
    height: 100%;
}

.container {
    /* padding: 0 8vh; */
    align-self: flex-end;
    /* margin: 0 auto; */
    width: 40%;
}

/* --- ОБЕРТКА И ЛОГИКА ЗАТУХАНИЯ --- */
.cards__wrapper {
    padding: 2vh;
    box-sizing: border-box;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    position: relative;
    z-index: 2;
    /* border: 2px black solid; */
}

/* Эффект затухания: когда навели на обертку, все карты тускнеют */
.cards__wrapper:hover .card {
    opacity: 0.32;
    filter: blur(3px);
    /* transform: scale(0.7); */
}

/* А та, на которую навели — горит ярко */
.cards__wrapper .card:hover {
    opacity: 1 !important;
    filter: blur(0);
    transform: scale(1.05); /* 3D наклон из JS применится поверх этого */
    z-index: 10;
}

.cards__wrapper .card {

}

/* --- КАРТОЧКА --- */
.card {
    cursor: pointer;
    position: relative;
    z-index: 2;
    width: 20vh;
    height: 30.5vh;
    margin: 1vh 1vh;
    box-sizing: border-box;
    background-color: black;
    background-image: var(--bg);
    /* margin-top: 6vh; */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: 10px;
    /* border-width: .2vh;
    border-style: solid;
    border-color: rgba(0, 0, 0, .2); */
    
    
    /* Важно для 3D */
    transform-style: preserve-3d;
    perspective: 1000px;
    transition: transform .1s ease-out, opacity 0.4s ease, filter 0.4s ease, border 0.3s ease, box-shadow 0.3s ease;
}

/* Цветное свечение сзади карточки */
.card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: var(--bg);
    background-size: cover;
    background-position: center;
    filter: blur(35px) brightness(1.2);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.1s ease;
    border-radius: 10px;
    scale: 1.1;
    box-sizing: border-box;
}

.card::before::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: var(--bg);
    background-size: cover;
    background-position: center;
    filter: blur(35px) brightness(10);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.1s ease;
    border-radius: 10px;
    scale: 1.1;
    box-sizing: border-box;
}

.card::after {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: var(--bg);
    background-size: cover;
    background-position: center;
    /* filter: blur(35px) brightness(1.2); */
    z-index: 2;
    /* opacity: 0; */
    transition: opacity 0.1s ease;
    border-radius: 10px;
    /* border: 5px solid rgba(255, 255, 255, 0.1); */
}

.card:hover {
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 0 25px rgba(255, 255, 255, 0.3), inset 0 0 15px rgba(255, 255, 255, 0.2);
    scale: 1.1;
}

.card:hover::before {
    opacity: 0.7;
}

/* --- ЗАДНИЙ ФОН (ДВОЙНОЙ СЛОЙ) --- */
.back-img {
    position: fixed;
    left: -18%; top: 0;
    width: 100%; height: 100%;
    z-index: -1;
    background-image: var(--current-bg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: #000;
}

.background_wrapper {
    
}

.background_wrapper::after {
    position: fixed;
    content: "";
    right: 0;
    top: 0;

    width: 100%;
    height: 100%;
        /*
    * Created with https://www.css-gradient.com
    * Gradient link: https://www.css-gradient.com/?c1=ffffff&c2=010101&gt=r&gd=dcr
    */
    background: #FFFFFF;
    /* background: radial-gradient(at center, rgb(255, 255, 255, .0), rgba(1, 1, 1, .5)); */
    background: linear-gradient(270deg, rgba(0, 0, 0, 1) 20%, rgba(0, 0, 0, .64) 40%, rgba(0,0,0,0) 50%);
}

.background_wrapper::before {
    position: fixed;
    content: "";
    right: 0;
    top: 0;

    width: 100%;
    height: 100%;
    /* background: linear-gradient(270deg, rgba(0, 0, 0, 1) 20%, rgba(0, 0, 0, .64) 40%, rgba(0,0,0,0) 50%); */
    background: radial-gradient(at center, rgb(255, 255, 255, .0) 67%, rgba(1, 1, 1, .87));
}

.back-img-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.6s ease-in-out;
}

.back-img-overlay.fade-in {
    opacity: 1;
}

@keyframes cardSpin {
    0% {
        /* Начинаем с текущего масштаба */
        /* transform: perspective(1000px) scale(1.05); */
        transform: perspective(2000px) scale(1);
        filter: brightness(1);
    }
    40% {
        /* В середине вращения карта чуть ближе к экрану */
        /* transform: perspective(1000px) scale(.9); */
        transform: perspective(2000px) scale(1) rotateY(180deg);
        /* filter: brightness(2); */
    }
    80% {
        /* transform: perspective(1000px) scale(1.2) rotateY(180deg); */
        transform: perspective(2000px) scale(1.05) rotateY(360deg);
        /* Заканчиваем полный оборот */
        filter: brightness(1);
    }
}

.card.is-clicking {
    /* Длительность 0.6s, чтобы успеть рассмотреть вращение */
    animation: cardSpin .87s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 100;
}