/* CARD CONTAINER */
.card {
    background: white;
    padding: 20px;
    border-radius: 18px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);

    display: flex;
    flex-direction: column;
    align-items: center;

    height: 375px;
    width: calc(100% - 80px);
    max-width: 600px;

    will-change: opacity, transform;
    transform: translateZ(0);
    transition: opacity 0.25s ease, transform 0.25s ease;

    position: relative;
    overflow: hidden;
}

/* Skeleton active state */
.card.loading {
    pointer-events: none;
}

.card.loading #img {
    opacity: 0;
    filter: blur(6px);
    transform: scale(1.02);
}

/* Hide content while loading */
.card.loading img,
.card.loading .answer {
    opacity: 0;
}

/* SINGLE overlay skeleton */
.card.loading::before {
    content: "";
    position: absolute;
    inset: 0;

    border-radius: inherit;

    background: linear-gradient(
        120deg,
        #e0e0e0 0%,
        #f2f2f2 40%,
        #e0e0e0 80%
    );

    background-size: 200% 200%;
    animation: skeleton-shimmer 1.8s ease-in-out infinite;
    z-index: 2;
}

/* Diagonal animation */
@keyframes skeleton-shimmer {
    0% {
        background-position: -100% -100%;
    }
    100% {
        background-position: 100% 100%;
    }
}

.card img,
.card .answer {
    opacity: 1;
    transition: opacity 0.25s ease;
}

.card:not(.loading) img,
.card:not(.loading) .answer {
    opacity: 1;
}

/* MOBILE */
@media (max-width: 600px) {
    .card {
        height: 320px;
        margin-top: 20px;
    }

    .container {
        padding: 10px;
    }
}

/* FADE ANIMATION */
.card.fade-out {
    opacity: 0;
    transform: scale(0.98);
}

/* =========================
   SKELETON LOADER
   ========================= */
@keyframes skeleton-loading {
    0% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0 50%;
    }
}

/* =========================
   IMAGE
   ========================= */
#img {
    cursor: pointer;
    opacity: 1;
    /* transition: opacity 0.2s ease; */
    transition: opacity 0.25s ease, filter 0.25s ease, transform 0.25s ease;

    max-width: 100%;
    height: auto;
    max-height: 320px;
    object-fit: contain;
    border-radius: 14px;

    will-change: opacity;
    z-index: 1;
}

/* MOBILE IMAGE */
@media (max-width: 600px) {
    #img {
        max-height: 250px;
    }
}

/* ANSWER */
.answer {
    margin-top: 10px;
    font-size: 20px;
    color: #111;

    min-height: 50px;

    opacity: 0;
    transition: opacity 0.2s ease;
}

/* MOBILE ANSWER */
@media (max-width: 600px) {
    .answer {
        font-size: 18px;
    }
}

/* ANSWER VISIBLE */
.answer.visible {
    opacity: 1;
}

.answer .mandatory-latin {
    color: #cd3333;
    font-weight: 500;
}

/* DECK LABEL INSIDE CARD */
.deck-label {
    font-size: 12px;
    color: #888;
    margin-top: 5px;
}