body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    color: #222;
}

header {
    text-align: center;
    padding: 20px;
    background-color: #1e3a5f;
    color: white;
}

main {
    max-width: 1200px;
    margin: auto;
    padding: 20px;
}

section {
    margin-bottom: 40px;
}

h2 {
    margin-bottom: 10px;
}

svg {
    background-color: white;
    border: 1px solid #ccc;
}

#map {
    width: 100%;
    height: 550px;
}


#chart {
    width: 100%;
    height: 400px;
}

.country {
    fill: #e0e0e0;
    stroke: #999;
    stroke-width: 0.5px;
}

.route {
    fill: none;
    stroke: rgba(30, 144, 255, 0.6);
}

.airport {
    fill: #d32f2f;
    stroke: white;
    stroke-width: 0.5px;
}

.tooltip {
    position: absolute;
    background: white;
    border: 1px solid #ccc;
    padding: 6px;
    font-size: 12px;
    pointer-events: none;
    opacity: 0;
}

footer {
    text-align: center;
    padding: 10px;
    background-color: #eee;
    font-size: 12px;
}

#map-container {
    display: flex;
}

#filter-panel {
    width: 200px;
    margin-right: 20px;
    font-size: 14px;
}

#map {
    flex-grow: 1;
}