/* Chart controls */
.controls {
    margin: 1em 0;
    padding: 1em;
}

.controls label {
    display: block;
    margin-bottom: 0.3em;
    font-weight: 600;
}

.controls select {
    padding: 0.5em 0.75em;
    border: 1px solid #ddd;
    font-size: 0.85em;
    margin-bottom: 1em;
    background: white;
    color: black;
}

@media (prefers-color-scheme: dark) {
    .controls {
        background: #111;
    }

    .controls select {
        background: #222;
        color: #fff;
        border: 1px solid #444;
    }
}

.platform-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 1em;
}

.platform-filter {
    display: flex;
    align-items: center;
    gap: 0.3em;
}

.platform-filter input {
    cursor: pointer;
}

.platform-filter label {
    display: inline;
    margin: 0;
    font-weight: normal;
    cursor: pointer;
}

/* Chart container */
.chart-container {
    margin: 1em 0;
    padding: 1em;
}

@media (prefers-color-scheme: dark) {
    .chart-container {
        background: #111;
    }
}

/* D3 chart elements */
.line {
    fill: none;
    stroke-width: 2.5;
}

.dot {
    stroke: white;
    stroke-width: 2;
}

@media (prefers-color-scheme: dark) {
    .dot {
        stroke: #000;
    }

    .axis line,
    .axis path {
        stroke: #fff;
    }

    .axis text {
        fill: #fff;
    }

    .axis-label {
        fill: #fff;
    }

    .grid line {
        stroke: #444;
        stroke-opacity: 0.5;
    }
}

.axis {
    font-size: 0.75em;
}

.axis-label {
    font-size: 0.85em;
    font-weight: 600;
}

.grid line {
    stroke: #e0e0e0;
    stroke-opacity: 0.7;
}

.grid path {
    stroke-width: 0;
}

.tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 0.5em 0.75em;
    font-size: 0.75em;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
}

@media (prefers-color-scheme: dark) {
    .tooltip {
        background: rgba(255, 255, 255, 0.9);
        color: black;
    }
}

.legend {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2em;
    margin-top: 1em;
    justify-content: center;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.4em;
    font-size: 0.85em;
}

.legend-color {
    width: 1.2em;
    height: 0.2em;
}