.word-card-flipping-container {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --success-gradient: linear-gradient(135deg, #84fab0 0%, #8fd3f4 100%);
    --card-front-gradient: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --primary-color: #667eea;
    --success-color: #4CAF50;
    --text-color: #333;
    --white: #fff;
    --border-radius: 10px;
    --card-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    --container-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --transition-fast: 0.3s ease;
    --transition-slow: 0.6s;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: var(--primary-gradient);
    border-radius: 15px;
    box-shadow: var(--container-shadow);
}

.word-card-flipping-container .round-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 600px;
    margin-bottom: 20px;
    padding: 15px 25px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.word-card-flipping-container .round-number,
.word-card-flipping-container .pairs-info {
    font-size: 18px;
    font-weight: bold;
    color: var(--text-color);
}

.word-card-flipping-container .round-number span,
.word-card-flipping-container .pairs-info span {
    color: var(--primary-color);
    font-size: 20px;
}

.word-card-flipping-container .cards-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    width: 100%;
    max-width: 600px;
    padding: 10px;
}

.word-card-flipping-container .poker {
    aspect-ratio: 3/2;
    perspective: 1000px;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.word-card-flipping-container .poker:hover {
    transform: scale(1.05);
}

.word-card-flipping-container .poker-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform var(--transition-slow);
    transform-style: preserve-3d;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.word-card-flipping-container .poker-inner.flipped,
.word-card-flipping-container .poker.matched-success .poker-inner {
    transform: rotateY(180deg);
}

.word-card-flipping-container .poker-front,
.word-card-flipping-container .poker-back {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: bold;
    padding: 10px;
    text-align: center;
    box-sizing: border-box;
    overflow: hidden;
    word-wrap: break-word;
    word-break: break-word;
    border: 2px solid transparent;
}

.word-card-flipping-container .poker-front {
    background: var(--card-front-gradient);
    color: var(--text-color);
    transform: rotateY(180deg);
    border-color: var(--primary-color);
}

.word-card-flipping-container .poker-back {
    background: var(--primary-gradient);
    color: var(--white);
    font-size: 36px;
    border-color: var(--white);
}

.word-card-flipping-container .poker.matched-success .poker-front {
    background: var(--success-gradient);
    border-color: var(--success-color);
}

.word-card-flipping-container .poker.matched-success {
    cursor: default;
    pointer-events: none;
}

@media (max-width: 768px) {
    .word-card-flipping-container {
        padding: 15px;
        min-height: 400px;
    }

    .word-card-flipping-container .round-info {
        padding: 10px 15px;
    }

    .word-card-flipping-container .round-number,
    .word-card-flipping-container .pairs-info {
        font-size: 14px;
    }

    .word-card-flipping-container .round-number span,
    .word-card-flipping-container .pairs-info span {
        font-size: 16px;
    }

    .word-card-flipping-container .cards-container {
        gap: 10px;
        padding: 5px;
    }

    .word-card-flipping-container .poker-front,
    .word-card-flipping-container .poker-back {
        font-size: 14px;
    }

    .word-card-flipping-container .poker-back {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .word-card-flipping-container {
        padding: 10px;
    }

    .word-card-flipping-container .round-info {
        padding: 8px 12px;
    }

    .word-card-flipping-container .round-number,
    .word-card-flipping-container .pairs-info {
        font-size: 12px;
    }

    .word-card-flipping-container .round-number span,
    .word-card-flipping-container .pairs-info span {
        font-size: 14px;
    }

    .word-card-flipping-container .cards-container {
        gap: 8px;
    }

    .word-card-flipping-container .poker-front,
    .word-card-flipping-container .poker-back {
        font-size: 12px;
        padding: 5px;
    }

    .word-card-flipping-container .poker-back {
        font-size: 24px;
    }
}

@media (max-width: 360px) {
    .word-card-flipping-container .cards-container {
        gap: 6px;
    }

    .word-card-flipping-container .poker-front,
    .word-card-flipping-container .poker-back {
        font-size: 10px;
        padding: 3px;
    }

    .word-card-flipping-container .poker-back {
        font-size: 20px;
    }
}