#graph {
    width: 100vw;
    height: 100vh;
    background: #fff;
}

.legend {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: #fff;
    border: 1px solid #ccc;
    padding: 12px 14px;
    border-radius: 6px;
    font-size: 13px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.theme-dark #graph {
    background: #0f1117;
}

.theme-dark .legend {
    background: #1a1f2e;
    border-color: #2d3550;
    color: #e2e8f0;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

.theme-dark .legend h4 {
    color: #e2e8f0;
}

.legend h4 {
    margin: 0 0 6px 0;
    font-size: 13px;
}

.legend-item {
    cursor: pointer;
    user-select: none;
    margin-bottom: 4px;
}

.legend-item.disabled {
    opacity: 0.35;
    text-decoration: line-through;
}

.swatch {
    display: inline-block;
    width: 12px;
    height: 12px;
    margin-right: 6px;
    vertical-align: middle;
    border: 1px solid #888;
}