@charset "UTF-8";
/**
 * 语言切换器样式
 * Language Switcher Styles
 */

/* 语言切换按钮容器 */
.language-switcher {
    position: relative;
    display: inline-block;
    margin-left: 15px;
}

/* 语言切换按钮 */
.language-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.05) 100%);
    border: 1.5px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: white;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.language-btn:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0.15) 100%);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.language-btn:active {
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
}

/* 语言标志 */
.language-flag {
    font-size: 20px;
    line-height: 1;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
}

/* 语言名称 */
.language-name {
    font-size: 14px;
    letter-spacing: 0.3px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* 下拉箭头 */
.language-arrow {
    font-size: 12px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.language-switcher.active .language-arrow {
    transform: rotate(180deg);
}

/* 语言下拉菜单 */
.language-dropdown {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    min-width: 200px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(0, 0, 0, 0.05);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-15px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    overflow: hidden;
    backdrop-filter: blur(20px);
}

.language-switcher.active .language-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

/* 下拉菜单标题 */
.language-dropdown-header {
    padding: 16px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 13px;
    font-weight: 700;
    text-align: center;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 语言选项列表 */
.language-options {
    padding: 10px 0;
}

/* 语言选项 */
.language-option {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 20px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border-left: 3px solid transparent;
}

.language-option:hover {
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.05) 100%);
    border-left-color: #667eea;
    transform: translateX(3px);
}

.language-option.active {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15) 0%, rgba(118, 75, 162, 0.12) 100%);
    border-left-color: #667eea;
    font-weight: 600;
}

.language-option.active::after {
    content: '✓';
    position: absolute;
    right: 20px;
    color: #667eea;
    font-weight: bold;
    font-size: 18px;
    animation: checkFadeIn 0.3s ease;
}

@keyframes checkFadeIn {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* 语言选项标志 */
.language-option-flag {
    font-size: 22px;
    line-height: 1;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

/* 语言选项信息 */
.language-option-info {
    flex: 1;
}

.language-option-name {
    font-size: 15px;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 3px;
    letter-spacing: 0.2px;
}

.language-option-native {
    font-size: 12px;
    color: #95a5a6;
    font-weight: 400;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .language-switcher {
        margin-left: 10px;
    }
    
    .language-btn {
        padding: 8px 14px;
        font-size: 13px;
    }
    
    .language-name {
        display: none;
    }
    
    .language-dropdown {
        min-width: 220px;
        right: 0;
        left: auto;
    }

    .language-option {
        padding: 12px 18px;
    }
}

/* 加载状态 */
.language-btn.loading {
    opacity: 0.7;
    cursor: wait;
}

.language-btn.loading .language-arrow {
    animation: languageRotate 0.8s linear infinite;
}

@keyframes languageRotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* 通知样式内联样式补充 */
.notification-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.notification-icon {
    font-size: 24px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.notification-text {
    font-size: 14px;
    letter-spacing: 0.3px;
}

/* 页面切换过渡效果 */
body {
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 语言切换成功提示动画 */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideOutRight {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(100px);
    }
}
        right: auto;
        left: 50%;
        transform: translateX(-50%) translateY(-10px);
    }
    
    .language-switcher.active .language-dropdown {
        transform: translateX(-50%) translateY(0);
    }
}

/* 深色主题适配 */
@media (prefers-color-scheme: dark) {
    .language-dropdown {
        background: #2c3e50;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    }
    
    .language-option:hover {
        background: rgba(255, 255, 255, 0.05);
    }
    
    .language-option.active {
        background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%);
    }
    
    .language-option-name {
        color: #ecf0f1;
    }
    
    .language-option-native {
        color: #95a5a6;
    }
}

/* 动画效果 */
@keyframes languageFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.language-dropdown.active {
    animation: languageFadeIn 0.3s ease;
}

/* 顶部导航栏中的语言切换器（浅色背景） */
.top-nav .language-btn {
    background: white;
    border: 1px solid #e0e0e0;
    color: #2c3e50;
}

.top-nav .language-btn:hover {
    background: #f8f9fa;
    border-color: #667eea;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.2);
}

/* 侧边栏中的语言切换器 */
.sidebar .language-switcher {
    width: 100%;
    margin: 10px 0;
}

.sidebar .language-btn {
    width: 100%;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
}

.sidebar .language-dropdown {
    left: 0;
    right: 0;
    width: 100%;
}

/* 加载状态 */
.language-btn.loading {
    pointer-events: none;
    opacity: 0.6;
}

.language-btn.loading::after {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-left: 8px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 工具提示 */
.language-tooltip {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 12px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    font-size: 12px;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1001;
}

.language-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.8);
}

.language-btn:hover .language-tooltip {
    opacity: 1;
    visibility: visible;
}