/* =====================================
   Memory Engine — visual system
   ===================================== */

.memoryScreen {
    --memory-ui-surface: #ffffff;
    --memory-ui-text: #172033;
    --memory-ui-muted: #667085;
    width: min(680px, calc(100% - 32px));
    margin: 0 auto;
    padding: 24px 0 32px;
    color: var(--memory-ui-text);
    text-align: center;
}

.memoryScreen h1 { margin: 0 0 12px; }
.memoryScreen h2 { margin: 12px 0 18px; }

.memoryScreen .scoreBox {
    width: min(520px, 100%);
    margin: 12px auto 20px;
    padding: 12px 16px;
    box-sizing: border-box;
    border-radius: 14px;
    background: #f4f7fb;
    font-weight: 700;
}

.memoryBoard {
    width: min(560px, 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, minmax(60px, 1fr));
    gap: 12px;
    direction: ltr;
}

.memoryCard {
    aspect-ratio: 1;
    min-width: 0;
    border: 2px solid #dbe4ef;
    border-radius: 16px;
    background: #eef3f8;
    color: #172033;
    font-size: clamp(22px, 5vw, 34px);
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 5px 14px rgba(15,23,42,.07);
    transition: transform .15s ease, background .15s ease, border-color .15s ease;
}

.memoryCard:hover { transform: translateY(-2px); background: #f8fafc; }
.memoryCard:active { transform: scale(.97); }
.memoryCard:disabled { cursor: default; }

.memoryMessage {
    min-height: 32px;
    margin: 14px auto;
    font-weight: 800;
}

@media (max-width: 480px) {
    .memoryScreen { width: min(100% - 20px, 680px); padding-top: 16px; }
    .memoryBoard { gap: 8px; }
    .memoryCard { border-radius: 12px; }
}