.card-stats {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
    margin-bottom: 12px;
    font-size: 0.9rem;
}

.card-message {
    min-height: 24px;
    margin-bottom: 12px;
    font-size: 0.88rem;
    color: var(--red);
}

.venn-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}

.venn-svg {
    width: 100%;
    max-width: 320px;
}

.venn-circle {
    fill-opacity: 0.15;
    stroke-width: 2;
}

.venn-circle.a {
    fill: var(--accent);
    stroke: var(--accent);
}

.venn-circle.b {
    fill: var(--red);
    stroke: var(--red);
}

.venn-label {
    font-family: 'Lalezar', sans-serif;
    font-size: 18px;
    fill: var(--ink);
}

.venn-zones {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    width: 100%;
    max-width: 520px;
}

.venn-zone {
    border: 1.5px dashed var(--card-border);
    border-radius: 10px;
    padding: 14px 6px;
    text-align: center;
    font-size: 0.78rem;
    color: var(--ink-soft);
    min-height: 60px;
}

.venn-zone.drag-over {
    border-color: var(--accent);
    background: var(--paper-2);
}

.item-pool {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.pool-item {
    padding: 10px 16px;
    border-radius: 999px;
    background: var(--paper-2);
    border: 1.5px solid var(--card-border);
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    cursor: grab;
}

.pool-item.placed {
    opacity: 0.3;
    cursor: default;
}