.k-mem-container {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    background: var(--bg-panel);
    font-family: var(--font-main);
    border: 2px solid var(--k-white);
    border-right-color: var(--k-gray-shadow);
    border-bottom-color: var(--k-gray-shadow);
    box-sizing: border-box;
}

.k-mem-header {
    background: var(--k-accent-red);
    color: var(--k-white);
    padding: 8px 12px;
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    font-weight: bold;
    border-bottom: 2px solid var(--k-black);
    box-shadow: inset 2px 2px 0px var(--k-light-reflect);
}

.k-mem-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 1fr;
    gap: 10px;
    padding: 15px;
    flex-grow: 1;
    background: #d9d9d9;
    border: 2px inset var(--k-white);
    margin: 10px;
}

.k-mem-card {
    background: var(--k-gray-shadow);
    border: 2px solid var(--k-white);
    border-right-color: #404040;
    border-bottom-color: #404040;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 2px 2px 0 var(--k-black);
    position: relative;
}

.k-mem-card.flipped {
    background: var(--card-bg, #fff);
    border: 2px solid var(--k-black);
    box-shadow: none;
    transform: translate(1px, 1px);
    color: var(--k-black);
}

.k-mem-footer {
    font-size: 8px;
    text-align: center;
    padding: 8px;
    color: #555;
    border-top: 1px solid var(--k-gray-shadow);
    background: var(--bg-panel);
}