#memory-game,
#ai-game {
    background: #c0c0c0;
    border: 3px solid;
    border-color: #ffffff #808080 #808080 #ffffff;
    box-shadow: 2px 2px 0 #000000;
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

#game-info,
#ai-game-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 6px 12px;
    background: #c0c0c0;
    border: 2px solid;
    border-color: #808080 #ffffff #ffffff #808080;
    font-size: 14px;
    font-weight: bold;
}

#timer,
#ai-timer {
    background: #000000;
    color: #ff0000;
    padding: 2px 6px;
    font-family: "w95";
    font-size: 16px;
    border: 2px inset #808080;
}

#reset-btn,
#ai-reset-btn {
    background: #c0c0c0;
    border: 2px solid;
    border-color: #ffffff #808080 #808080 #ffffff;
    padding: 4px 10px;
    font-weight: bold;
    cursor: pointer;
}

#reset-btn:active,
#ai-reset-btn:active {
    border-color: #808080 #ffffff #ffffff #808080;
}

#game-board,
#ai-game-board {
    display: grid;
    grid-template-columns: repeat(4, 110px);
    grid-template-rows: repeat(4, 110px);
    gap: 8px;
    padding: 8px;
    background: #808080;
    border: 2px solid;
    border-color: #404040 #ffffff #ffffff #404040;
}

.card,
.ai-card {
    width: 100%;
    height: 100%;
    background: #c0c0c0;
    border: 3px solid;
    border-color: #ffffff #404040 #404040 #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    overflow: hidden;
    user-select: none;
}

.card:active,
.ai-card:active {
    border-color: #404040 #ffffff #ffffff #404040;
}

.card img,
.ai-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.card.matched,
.ai-card.matched {
    border-color: #808080 #ffffff #ffffff #808080;
    background: #a0a0a0;
    cursor: default;
    filter: grayscale(40%);
}

#result,
#ai-result {
    font-weight: bold;
    color: #000080;
}