/* 语言切换器样式 */
.lang-switcher {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.lang-dropdown {
    position: relative;
    display: inline-block;
}

.lang-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 10px 16px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.lang-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.lang-button:active {
    transform: translateY(0);
}

.lang-icon {
    font-size: 16px;
}

.lang-arrow {
    font-size: 12px;
    transition: transform 0.3s ease;
}

.lang-dropdown.active .lang-arrow {
    transform: rotate(180deg);
}

.lang-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    min-width: 180px;
    max-width: 220px;
    max-height: 400px !important;
    overflow-y: auto !important;
    overflow-x: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    scrollbar-width: thin;
    scrollbar-color: #667eea #f0f0f0;
    z-index: 1001;
}

.lang-menu::-webkit-scrollbar {
    width: 6px;
}

.lang-menu::-webkit-scrollbar-track {
    background: #f0f0f0;
    border-radius: 3px;
}

.lang-menu::-webkit-scrollbar-thumb {
    background: #667eea;
    border-radius: 3px;
}

.lang-menu::-webkit-scrollbar-thumb:hover {
    background: #5568d3;
}

.lang-dropdown.active .lang-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-menu-item {
    display: block;
    padding: 8px 12px;
    color: #333;
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px solid #f0f0f0;
    font-size: 14px;
    white-space: nowrap;
}

.lang-menu-item:first-child {
    border-radius: 8px 8px 0 0;
}

.lang-menu-item:last-child {
    border-bottom: none;
    border-radius: 0 0 8px 8px;
}

.lang-menu-item:hover {
    background: #f8f9ff;
    color: #667eea;
    padding-left: 16px;
}

.lang-menu-item.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: 500;
}

.lang-menu-item.active:hover {
    padding-left: 12px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .lang-switcher {
        top: 10px;
        right: 10px;
    }

    .lang-button {
        padding: 8px 12px;
        font-size: 13px;
    }

    .lang-menu {
        min-width: 140px;
    }
}