/* ============================================
   Sliding Puzzle Game Styles
   ============================================ */

.sliding-puzzle-game {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.sliding-puzzle-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.sliding-puzzle-header h2 {
    font-size: 1.75rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.sliding-puzzle-instruction {
    font-size: 1rem;
    color: var(--color-text-dark);
    opacity: 0.8;
    margin: 0 0 var(--spacing-xs) 0;
}

.move-counter {
    font-size: 0.875rem;
    color: var(--color-secondary);
    font-weight: 600;
    margin: 0;
}

/* Puzzle Container */
.sliding-puzzle-container {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    aspect-ratio: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 8px;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, #FFFFFF, #F0F8F9);
    border-radius: 16px;
    box-shadow: 0 8px 24px var(--color-shadow-teal);
    border: 2px solid rgba(77, 184, 196, 0.3);
}

/* Puzzle Tile */
.puzzle-tile {
    background: linear-gradient(135deg, #FFFFFF, #E8F4F5);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xs);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 2px solid rgba(77, 184, 196, 0.2);
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

/* Empty Tile */
.puzzle-tile.empty {
    background: rgba(77, 184, 196, 0.1);
    border: 2px dashed rgba(77, 184, 196, 0.3);
    box-shadow: none;
}

/* Movable Tile */
.puzzle-tile.movable {
    cursor: pointer;
    border-color: var(--color-primary);
}

.puzzle-tile.movable:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(77, 184, 196, 0.3);
    border-color: var(--color-secondary);
}

.puzzle-tile.movable:active {
    transform: scale(0.98);
}

/* Tile Number */
.tile-number {
    position: absolute;
    top: 4px;
    left: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-secondary);
    opacity: 0.5;
}

/* Tile Text */
.tile-text {
    font-size: 0.75rem;
    text-align: center;
    color: var(--color-text-dark);
    line-height: 1.3;
    word-wrap: break-word;
    max-width: 100%;
}

/* Puzzle Hint */
.sliding-puzzle-hint {
    text-align: center;
    margin-top: var(--spacing-sm);
}

.sliding-puzzle-hint small {
    color: var(--color-text-dark);
    opacity: 0.6;
    font-size: 0.875rem;
}

/* Puzzle Complete State */
.puzzle-complete {
    grid-column: 1 / -1;
    grid-row: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-lg);
    animation: contentScaleFade 600ms cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.puzzle-complete h3 {
    font-size: 1.5rem;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

.puzzle-message {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-md);
}

.puzzle-stats {
    font-size: 0.875rem;
    color: var(--color-primary);
    font-weight: 600;
}

/* Responsive */
@media (max-width: 768px) {
    .sliding-puzzle-container {
        max-width: 320px;
        gap: 6px;
        padding: var(--spacing-sm);
    }

    .tile-text {
        font-size: 0.65rem;
    }

    .sliding-puzzle-header h2 {
        font-size: 1.5rem;
    }
}

/* Add scale fade animation if not already present */
@keyframes contentScaleFade {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}