.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);
}

.line-svg {
    width: 100%;
    max-width: 420px;
    display: block;
    margin: 0 auto;
    background: var(--panel-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
}

.grid-line {
    stroke: var(--grid);
    stroke-width: 1;
}

.axis-line {
    stroke: var(--ink-faint);
    stroke-width: 1.5;
}

.point-dot {
    fill: var(--paper-2);
    stroke: var(--card-border);
    stroke-width: 1;
    cursor: pointer;
}

.point-dot:hover {
    fill: var(--accent);
}

.point-dot.selected {
    fill: var(--accent);
}

.solution-line {
    stroke: var(--green);
    stroke-width: 2.5;
}