/* Visual Memory */

.vm-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    user-select: none;
}

.vm-hud {
    display: flex;
    gap: 1.5rem;
    font-weight: 600;
    color: var(--color-text-light);
}

/* Square grid sized off the viewport so a 7x7 board still fits a phone. */
.vm-grid {
    --vm-size: 3;
    display: grid;
    grid-template-columns: repeat(var(--vm-size), 1fr);
    gap: 6px;
    width: min(360px, 86vw);
    aspect-ratio: 1;
}

.vm-cell {
    border: 1px solid var(--color-border);
    padding: 0;
    border-radius: var(--radius-sm);
    background: var(--color-card-bg);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: background-color 120ms ease, transform 120ms ease;
}

.vm-cell:focus-visible {
    outline: 3px solid var(--color-text);
    outline-offset: 2px;
}

.vm-cell.lit {
    background: var(--cat-memory);
}

.vm-cell.hit {
    background: var(--color-success);
    transform: scale(0.94);
}

.vm-cell.miss {
    background: var(--color-accent);
}

/* Tiles the player never found, revealed at game over. */
.vm-cell.missed {
    background: repeating-linear-gradient(
        45deg,
        var(--cat-memory),
        var(--cat-memory) 5px,
        var(--color-border-light) 5px,
        var(--color-border-light) 10px
    );
}

/* Clicking during the flash phase would let players cheat the timer. */
.state-showing .vm-cell,
.state-cleared .vm-cell,
.state-result .vm-cell,
.state-idle .vm-cell {
    pointer-events: none;
}

.vm-feedback {
    min-height: 1.4em;
    margin: 0;
    font-weight: 600;
    color: var(--color-text-light);
}

.vm-btn {
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    background: var(--color-primary);
    color: var(--color-text);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.vm-btn:hover { background: var(--color-primary-dark); }
.vm-btn:focus-visible {
    outline: 3px solid var(--color-text);
    outline-offset: 2px;
}

.state-showing .vm-btn,
.state-playing .vm-btn,
.state-cleared .vm-btn { visibility: hidden; }