/* 重新设计的语言切换样式 */

/* 语言切换按钮 */
.lang-switcher {
    margin-left: var(--spacing-sm);
}

.lang-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-dark);
    border: 2px solid var(--primary-dark);
    color: var(--white);
    padding: 0.75rem 1.25rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(10, 25, 41, 0.2);
    position: relative;
    overflow: hidden;
}

.lang-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.lang-button:hover {
    background: #0f1f35;
    border-color: #0f1f35;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(10, 25, 41, 0.3);
}

.lang-button:hover::before {
    left: 100%;
}

.lang-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(10, 25, 41, 0.2);
}

.lang-button svg {
    width: 18px;
    height: 18px;
}

/* 双语内容基础样式 */
.bilingual-title {
    position: relative;
}

.zh-title, .en-title {
    transition: opacity 0.3s ease;
}

.bilingual-desc {
    position: relative;
}

.zh-desc, .en-desc {
    transition: opacity 0.3s ease;
}

.bilingual-button {
    position: relative;
}

.zh-text, .en-text {
    transition: opacity 0.3s ease;
}

.bilingual-nav {
    position: relative;
}

.zh-nav, .en-nav {
    transition: opacity 0.3s ease;
}

.bilingual-label {
    position: relative;
}

.bilingual-label .zh-text,
.bilingual-label .en-text {
    transition: opacity 0.3s ease;
}

/* 默认显示中文 */
.lang-zh .zh-title,
.lang-zh .zh-desc,
.lang-zh .zh-text,
.lang-zh .zh-nav {
    display: block;
}

.lang-zh .en-title,
.lang-zh .en-desc,
.lang-zh .en-text,
.lang-zh .en-nav {
    display: none;
}

/* 英文模式显示英文 */
.lang-en .zh-title,
.lang-en .zh-desc,
.lang-en .zh-text,
.lang-en .zh-nav {
    display: none;
}

.lang-en .en-title,
.lang-en .en-desc,
.lang-en .en-text,
.lang-en .en-nav {
    display: block;
}

/* 特殊处理：按钮内的文本应该是inline */
.lang-zh .bilingual-button .zh-text,
.lang-en .bilingual-button .en-text {
    display: inline;
}

.lang-zh .bilingual-button .en-text,
.lang-en .bilingual-button .zh-text {
    display: none;
}

/* 导航菜单特殊处理 */
.lang-zh .bilingual-nav .zh-nav,
.lang-en .bilingual-nav .en-nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.lang-zh .bilingual-nav .en-nav,
.lang-en .bilingual-nav .zh-nav {
    display: none;
}

/* 兼容旧的双语类名（逐步迁移） */
.en-text {
    display: none;
}

.en-small {
    font-size: 0.75em;
    color: var(--gray-light);
    font-weight: 400;
}

.en-subtitle {
    font-size: 0.6em;
    font-weight: 400;
    opacity: 0.9;
    display: block;
    margin-top: var(--spacing-sm);
}

/* 英文模式下的旧类名处理 */
.lang-en .en-text {
    display: block;
}

.lang-en .en-small {
    display: block;
}

.lang-en .en-subtitle {
    display: block;
}

/* 中文模式隐藏英文旧类名 */
.lang-zh .en-text {
    display: none;
}

/* 语言特定的按钮显示/隐藏 */
.lang-zh .zh-only {
    display: block !important;
}

.lang-zh .en-only {
    display: none !important;
}

.lang-en .zh-only {
    display: none !important;
}

.lang-en .en-only {
    display: block !important;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .lang-button {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
    
    .lang-button svg {
        width: 16px;
        height: 16px;
    }
}