body {

    margin: 0;
    padding: 20px;

    font-family: Arial, Helvetica, sans-serif;

    background: #f5f5f5;
    color: #222;

    transition: all 0.3s;
}

.container {

    max-width: 1800px;
    margin: auto;
}

h1 {

    margin-bottom: 20px;
}

.toolbar {

    display: flex;
    flex-wrap: wrap;
    gap: 10px;

    align-items: center;

    margin-bottom: 15px;
}

input,
button {

    padding: 8px 12px;
}

.chart-container {

    height: 750px;

    background: white;

    padding: 10px;

    border-radius: 8px;

    box-shadow:
        0 2px 10px rgba(0,0,0,0.1);
}

body.dark {

    background: #1c1c1c;
    color: white;
}

body.dark .chart-container {

    background: #2b2b2b;
}

@media (max-width: 900px)
{
    .chart-container {

        height: 500px;
    }
}

.station-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
	margin-top: 15px;
    margin-bottom: 10px;
}

.station-item {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 14px;
    cursor: pointer;
}

.station-value {
    font-weight: bold;
}

.color-box {
    width: 12px;
    height: 12px;
    display: inline-block;
}

.quick-buttons {

    display: flex;

    flex-wrap: wrap;

    gap: 8px;

    margin-bottom: 20px;
}