.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    position: sticky;
    top: 0;
    z-index: 10;
}

.toggle-button {
    background: none;
    border: none;
    font-size: 1.2em;
    cursor: pointer;
    transition: transform 0.3s;
    color: var(--text-primary);
}

.toggle-button.collapsed {
    transform: rotate(-90deg);
}

.settings-content {
    max-height: unset; /* 既存の max-height 制限を解除 */
    overflow: visible; /* オーバーフローを許可 */
    transition: all 0.3s ease-out;
}

.settings-content.collapsed {
    max-height: 0;
    overflow: hidden;
}