:root {
    --card-width: 80px;
    --card-height: 112px;
    --card-gap: 12px;
}

.game-board {
    padding: 10px;
}

.score {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-color);
}

.top-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.stock-waste {
    display: flex;
    gap: var(--card-gap);
}

.stock, .waste, .foundation {
    width: var(--card-width);
    height: var(--card-height);
    border-radius: 6px;
    position: relative;
}

.stock {
    background: var(--card-back);
    border: 2px solid var(--card-back-border);
    cursor: pointer;
}

.stock.empty::after {
    content: '↺';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2.5rem;
    color: rgba(255, 255, 255, 0.5);
}

.stock.empty {
    cursor: pointer;
}

.waste {
    border: 2px dashed rgba(255, 255, 255, 0.15);
    background: rgba(0,0,0,0.15);
    overflow: visible;
    position: relative;
}

.foundations {
    display: flex;
    gap: 8px;
}

.foundation {
    border: 2px dashed rgba(255, 255, 255, 0.15);
    background: rgba(0,0,0,0.15);
}

.middle-row {
    display: flex;
    margin-bottom: 20px;
}

.reserve {
    position: relative;
    width: var(--card-width);
    min-height: var(--card-height);
}

.reserve .card {
    position: absolute;
    top: 0;
    left: 0;
}

.tableau {
    display: flex;
    gap: 8px;
    min-height: 400px;
    justify-content: center;
}

.tableau-column {
    position: relative;
    height: var(--card-height);
    width: var(--card-width);
    border: 2px dashed rgba(255, 255, 255, 0.15);
    background: rgba(0,0,0,0.15);
}

@media (max-width: 768px) {
    .game-board {
        margin-left: 0;
        margin-right: 0;
        padding-left: 5px;
        padding-right: 5px;
    }

    :root {
        --card-width: 50px;
        --card-height: 70px;
        --card-gap: 8px;
    }

    .game-header {
        flex-wrap: wrap;
        gap: 10px;
    }

    .game-header h1 {
        width: 100%;
        text-align: center;
    }

    .tableau {
        min-height: 250px;
    }

    .card-face {
        padding: 3px;
        font-size: 0.7rem;
    }

    .card-center {
        font-size: 1.25rem;
    }
}