/* Seolang 语种切换组件 - 全部类名 seolang- 前缀，杜绝全局冲突 */
.seolang-switch {
    position: relative;
    display: inline-flex;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-size: 14px;
    cursor: pointer;
    user-select: none;
    z-index: 9999;
}
.seolang-trigger {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid #e5e7eb;
    background: #ffffff;
    transition: all 0.2s ease;
}
.seolang-trigger:hover {
    border-color: #165DFF;
    box-shadow: 0 2px 8px rgba(22,93,255,0.08);
}
.seolang-icon {
    font-size: 16px;
    line-height: 1;
}
.seolang-current {
    color: #333;
    white-space: nowrap;
}
.seolang-arrow {
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid #666;
    transition: transform 0.2s ease;
}
.seolang-arrow.seolang-open {
    transform: rotate(180deg);
}
.seolang-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 130px;
    padding: 6px 0;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.12);
    border: 1px solid #eee;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: all 0.2s ease;
    z-index: 9999;
}
.seolang-dropdown.seolang-show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.seolang-item {
    display: block;
    padding: 8px 16px;
    color: #333;
    text-decoration: none;
    font-size: 13px;
    transition: background 0.18s;
    white-space: nowrap;
}
.seolang-item:hover {
    background-color: #f3f4f6;
}
.seolang-item.active {
    color: #165DFF;
    background-color: #f0f7ff;
    font-weight: 500;
}

/* ========== 移动端适配 ========== */
@media screen and (max-width: 768px) {
    .seolang-dropdown {
        left: auto;
        right: 0;
    }
    .seolang-trigger {
        padding: 8px 10px;
    }
}