.line-red {
    display: inline-block;
    width: 20px;
    height: 20px;
    background-color: var(--primary-color);
    border-radius: 50%;
    margin-right: 0.5rem;
}

.line-blue {
    display: inline-block;
    width: 20px;
    height: 20px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    margin-right: 0.5rem;
}

.line-green {
    display: inline-block;
    width: 20px;
    height: 20px;
    background-color: var(--tertiary-color);
    border-radius: 50%;
    margin-right: 0.5rem;
}

.station-marker {
    position: absolute;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 12px;
    cursor: pointer;
    transition: transform 0.2s;
    z-index: 10;
}

.station-marker:hover {
    transform: scale(1.2);
    z-index: 20;
}

.station-marker.red {
    background-color: var(--primary-color);
}

.station-marker.blue {
    background-color: var(--secondary-color);
}

.station-marker.green {
    background-color: var(--tertiary-color);
}

.station-marker.interchange {
    background-color: #ff9800;
}

.metro-line {
    position: absolute;
    height: 6px;
    transform-origin: left center;
    z-index: 5;
}

.metro-line.red {
    background-color: var(--primary-color);
}

.metro-line.blue {
    background-color: var(--secondary-color);
}

.metro-line.green {
    background-color: var(--tertiary-color);
}

.station-tooltip {
    background-color: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    z-index: 30;
    max-width: 200px;
}

.station-tooltip h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.path-step {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
    padding: 0.5rem;
    background-color: #f9f9f9;
    border-radius: 4px;
}

.path-step i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.line-change {
    display: flex;
    align-items: center;
    margin: 0.5rem 0 0.5rem 2rem;
    padding: 0.5rem;
    background-color: #fff8e1;
    border-radius: 4px;
}