/* 多语言切换器样式 */
html.i18n-booting body {
    opacity: 0;
    visibility: hidden;
}

html.i18n-ready body {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.18s ease;
}

.language-selector {
    display: none !important;
    position: fixed;
    top: 10px;
    right: 10px;
    z-index: 9999;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

body.home-page .language-selector {
    display: block !important;
}

.language-selector .lang-btn {
    background: transparent;
    color: #fff;
    border: none;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.language-selector .lang-btn:hover {
    transform: scale(1.05);
}

.language-selector .earth-icon {
    width: 22px;
    height: 22px;
    fill: currentColor;
    transition: transform 0.5s ease;
    color: #fff;
}

.language-selector .lang-btn:hover .earth-icon {
    transform: rotate(180deg);
}

.language-selector .lang-text {
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    white-space: nowrap;
}

/* 下拉菜单 */
.language-selector .lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-10px) scale(0.95);
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.08);
    min-width: 200px;
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: top center;
}

.language-selector.active .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0) scale(1);
}

/* 下拉菜单项 */
.language-selector .lang-option {
    padding: 12px 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
    border-radius: 8px;
    color: #333;
    margin-bottom: 2px;
    font-size: 14px;
}

.language-selector .lang-option:last-child {
    margin-bottom: 0;
}

.language-selector .lang-option:hover {
    background: #f5f5f5;
    color: #000;
    transform: translateX(3px);
}

.language-selector .lang-option.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.4);
}

.language-selector .lang-option .flag {
    font-size: 20px;
    line-height: 1;
    filter: drop-shadow(0 1px 2px rgba(0,0,0,0.1));
}

.language-selector .lang-option .name {
    font-size: 14px;
    font-weight: 500;
    flex: 1;
}

.language-selector .lang-option .check-icon {
    margin-left: auto;
    opacity: 0;
    transform: scale(0);
    transition: all 0.2s ease;
    color: white;
    font-size: 14px;
}

.language-selector .lang-option.active .check-icon {
    opacity: 1;
    transform: scale(1);
}

/* 下拉箭头 */
.language-selector .lang-dropdown::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 12px;
    height: 12px;
    background: #ffffff;
    border-left: 1px solid rgba(0, 0, 0, 0.08);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

[dir="rtl"] .language-selector {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
}

[dir="rtl"] .language-selector .lang-dropdown {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    transform-origin: top center;
}

[dir="rtl"] .language-selector .lang-dropdown::before {
    left: 50%;
    right: auto;
    transform: translateX(-50%) rotate(45deg);
}

[dir="rtl"] .language-selector .lang-option:hover {
    transform: translateX(-3px);
}

[dir="rtl"] .language-selector .lang-option .check-icon {
    margin-left: 0;
    margin-right: auto;
}

@media (max-width: 768px) {
    .language-selector {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        top: 50%;
        margin-top: -10px;
    }
    
    [dir="rtl"] .language-selector {
        left: 50%;
        transform: translateX(-50%);
    }

    .language-selector .lang-btn {
        padding: 6px;
        width: 36px;
        height: 36px;
    }
    
    .language-selector .earth-icon {
        width: 20px;
        height: 20px;
    }
    
    .language-selector .lang-dropdown {
        min-width: 180px;
        left: 50%;
        transform: translateX(-50%);
    }
    
    .language-selector .lang-dropdown::before {
        left: 50%;
        transform: translateX(-50%) rotate(45deg);
    }

    body.home-page .language-selector {
        position: static !important;
        left: auto !important;
        right: auto !important;
        top: auto !important;
        transform: none !important;
        margin-top: 0 !important;
        display: flex !important;
        align-items: center;
        justify-content: flex-end;
    }

    body.home-page .language-selector .lang-btn {
        width: auto;
        height: 32px;
        min-height: 32px;
        min-width: 0;
        padding: 0 8px;
        gap: 4px;
        border-radius: 16px;
    }

    body.home-page .language-selector .lang-text {
        display: none;
    }

    body.home-page .language-selector .earth-icon {
        width: 16px;
        height: 16px;
    }

    body.home-page .language-selector .lang-dropdown {
        left: auto;
        right: 0;
        transform: translateY(-10px) scale(0.95);
        min-width: 168px;
    }

    body.home-page .language-selector.active .lang-dropdown {
        transform: translateY(0) scale(1);
    }

    body.home-page .language-selector .lang-dropdown::before {
        left: auto;
        right: 16px;
        transform: rotate(45deg);
    }
}

.i18n-loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.i18n-loading.active {
    opacity: 1;
    visibility: visible;
}

.i18n-loading .spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.i18n-toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 12px 25px;
    border-radius: 25px;
    font-size: 14px;
    z-index: 10001;
    opacity: 0;
    transition: all 0.3s ease;
}

.i18n-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}