/* ツールチップスタイル */
.tooltip-container {
    position: relative;
    display: inline-block;
}

.tooltip-icon {
    display: inline-block;
    width: 16px;
    height: 16px;
    background-color: #2196F3;
    color: white;
    border-radius: 50%;
    text-align: center;
    line-height: 16px;
    font-size: 12px;
    font-weight: bold;
    cursor: help;
    margin-left: 4px;
    vertical-align: middle;
}

.tooltip-content {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    z-index: 1000;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #333;
    color: #fff;
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 13px;
    line-height: 1.5;
    width: 250px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: opacity 0.3s, visibility 0.3s;
    white-space: normal;
    text-align: left;
}

.tooltip-content::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #333 transparent transparent transparent;
}

.tooltip-container:hover .tooltip-content {
    visibility: visible;
    opacity: 1;
}

/* モバイル対応 */
@media (max-width: 768px) {
    .tooltip-content {
        width: 200px;
        font-size: 12px;
    }
}