.solitaire-board {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.top-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 24px;
    flex-wrap: wrap;
}

.stock-panel,
.foundations {
    display: flex;
    gap: 14px;
}

.pile {
    width: 90px;
    min-height: 130px;
    padding: 10px;
    border-radius: 18px;
    background: rgba(15, 23, 42, 0.85);
    border: 1px solid rgba(255,255,255,0.1);
    position: relative;
    cursor: pointer;
}

.pile-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.pile-slot {
    width: 100%;
    min-height: 100px;
    background: rgba(255,255,255,0.05);
    border-radius: 14px;
}

.tableau {
    display: grid;
    grid-template-columns: repeat(7, minmax(90px, 1fr));
    gap: 14px;
}

.column {
    min-height: 260px;
    position: relative;
    padding-bottom: 20px;
}

.card {
    width: 90px;
    height: 130px;
    border-radius: 18px;
    box-shadow: 0 12px 24px rgba(0,0,0,0.18);
    position: absolute;
    left: 0;
    transition: transform 0.1s ease;
    cursor: pointer;
}

.card.face-down {
    background: linear-gradient(180deg, #334155 0%, #1e293b 100%);
    border: 1px solid rgba(255,255,255,0.08);
}

.card.face-up {
    background: linear-gradient(180deg, #f8fafc 0%, #e2e8f0 100%);
    border: 1px solid rgba(148,163,184,0.3);
}

.card.selected {
    transform: translateY(-8px);
    box-shadow: 0 18px 28px rgba(0,0,0,0.32);
}

.card .rank,
.card .suit {
    position: absolute;
    left: 12px;
    font-size: 1rem;
    font-weight: 700;
}

.card .rank {
    top: 12px;
}

.card .suit {
    top: 30px;
}

.card .center-suit {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 2.4rem;
}

.game-help {
    color: var(--text-secondary);
    font-size: 0.95rem;
    text-align: center;
}

.game-message {
    min-height: 1.4rem;
    color: #a3e635;
    font-weight: 700;
    text-align: center;
}

@media (max-width: 960px) {
    .tableau {
        grid-template-columns: repeat(4, minmax(90px, 1fr));
    }
}

@media (max-width: 640px) {
    .top-row {
        flex-direction: column;
        align-items: stretch;
    }
    .stock-panel,
    .foundations {
        justify-content: center;
        flex-wrap: wrap;
    }
    .tableau {
        grid-template-columns: repeat(2, minmax(90px, 1fr));
    }
}