/* Internationalization Styles */

/* Language Toggle Button - Hidden for English-only site */
.btn-language-toggle,
#languageToggle {
    display: none !important;
}

/* Hide any Chinese text elements */
[lang="zh"],
[data-lang="zh"],
.chinese-text {
    display: none !important;
}

.btn-language-toggle:active {
    transform: translateY(0);
    box-shadow: 0 4px 15px rgba(0, 255, 136, 0.2);
}

/* Language toggle animation */
.btn-language-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-language-toggle:hover::before {
    left: 100%;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .btn-language-toggle {
        font-size: 12px;
        padding: 6px 10px;
        margin-right: 8px;
        min-width: 40px;
    }
}

/* Language switching animation */
.i18n-fade-out {
    opacity: 0;
    transition: opacity 0.2s ease-out;
}

.i18n-fade-in {
    opacity: 1;
    transition: opacity 0.3s ease-in;
}

/* Loading state for language switching */
.i18n-loading {
    position: relative;
}

.i18n-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid #00ff88;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: i18n-spin 1s linear infinite;
}

@keyframes i18n-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Smooth transitions for text changes */
[data-i18n], [data-i18n-html], [data-i18n-aria] {
    transition: opacity 0.2s ease;
}

/* Language indicator in footer */
.language-indicator {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 10px;
}

.language-indicator::before {
    content: '🌐';
    font-size: 14px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn-language-toggle {
        border: 2px solid #00ff88;
        background: #000;
        color: #00ff88;
    }
    
    .btn-language-toggle:hover {
        background: #00ff88;
        color: #000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .btn-language-toggle,
    .i18n-fade-out,
    .i18n-fade-in,
    [data-i18n],
    [data-i18n-html],
    [data-i18n-aria] {
        transition: none;
    }
    
    .btn-language-toggle::before {
        display: none;
    }
    
    @keyframes i18n-spin {
        0%, 100% { transform: rotate(0deg); }
    }
}