.board-wrapper {
    position: relative;
    overflow: hidden;
}

#game-canvas {
    width: 100%;
    border-radius: 24px;
    background: linear-gradient(180deg, rgba(15,23,42,0.95), rgba(15,23,42,0.85));
    display: block;
}

.hud {
    margin-top: 16px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.color-swatch {
    display: inline-block;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.18);
    vertical-align: middle;
}

.overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: rgba(15, 23, 42, 0.94);
    border-radius: 24px;
}

.overlay.hidden {
    display: none;
}

@media (max-width: 640px) {
    .hud {
        flex-direction: column;
        align-items: center;
    }
}