/**
 * Japanese Navigation Layout Optimization
 * 日本語ナビゲーションレイアウト最適化
 * 
 * 日语站点主导航栏的排版优化（不影响功能）
 * 
 * @package Corporate_Theme
 * @version 1.0.0
 */

/* ==========================================================================
   导航栏容器优化 - Navigation Container Optimization
   ========================================================================== */

/* 增加导航栏高度和内边距，提升视觉舒适度 */
html[lang="ja-JP"] .site-header,
html[lang="ja"] .site-header {
    padding: 0.5rem 0;
}

html[lang="ja-JP"] .site-header .container,
html[lang="ja"] .site-header .container {
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
}

/* ==========================================================================
   Logo 区域优化 - Logo Area Optimization
   ========================================================================== */

html[lang="ja-JP"] .site-branding .custom-logo,
html[lang="ja"] .site-branding .custom-logo {
    max-height: 48px;
    width: auto;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

html[lang="ja-JP"] .site-branding .custom-logo:hover,
html[lang="ja"] .site-branding .custom-logo:hover {
    opacity: 0.85;
    transform: scale(1.02);
}

/* 文字 Logo 优化 */
html[lang="ja-JP"] .site-title,
html[lang="ja"] .site-title {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.08em;
}

html[lang="ja-JP"] .site-title a,
html[lang="ja"] .site-title a {
    transition: color 0.3s ease;
}

/* ==========================================================================
   导航菜单间距优化 - Navigation Menu Spacing Optimization
   ========================================================================== */

/* 主导航容器 - 增加间距 */
html[lang="ja-JP"] .main-navigation,
html[lang="ja"] .main-navigation {
    gap: 2.5rem;
}

/* 菜单列表 - 优化菜单项之间的间距 */
html[lang="ja-JP"] .primary-menu-container ul,
html[lang="ja"] .primary-menu-container ul {
    gap: 2rem;
}

/* ==========================================================================
   菜单项文字优化 - Menu Item Text Optimization
   ========================================================================== */

/* 菜单链接 - 日语文字排版优化 */
html[lang="ja-JP"] .primary-menu-container a,
html[lang="ja"] .primary-menu-container a {
    padding: 0.625rem 0.75rem;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    line-height: 1.6;
    transition: color 0.3s ease;
}

/* 悬停效果 - 优雅的下划线动画 */
html[lang="ja-JP"] .primary-menu-container a::after,
html[lang="ja"] .primary-menu-container a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #1e88e5 0%, #1565c0 100%);
    transform: translateX(-50%);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html[lang="ja-JP"] .primary-menu-container a:hover::after,
html[lang="ja"] .primary-menu-container a:hover::after {
    width: 100%;
}

/* 当前页面高亮 */
html[lang="ja-JP"] .primary-menu-container .current-menu-item > a,
html[lang="ja-JP"] .primary-menu-container .current_page_item > a,
html[lang="ja"] .primary-menu-container .current-menu-item > a,
html[lang="ja"] .primary-menu-container .current_page_item > a {
    font-weight: 600;
}

html[lang="ja-JP"] .primary-menu-container .current-menu-item > a::after,
html[lang="ja-JP"] .primary-menu-container .current_page_item > a::after,
html[lang="ja"] .primary-menu-container .current-menu-item > a::after,
html[lang="ja"] .primary-menu-container .current_page_item > a::after {
    width: 100%;
}

/* ==========================================================================
   下拉菜单优化 - Dropdown Menu Optimization
   ========================================================================== */

/* 子菜单容器 - 优化阴影和圆角 */
html[lang="ja-JP"] .primary-menu-container .sub-menu,
html[lang="ja"] .primary-menu-container .sub-menu {
    min-width: 220px;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    padding: 0.75rem 0;
    margin-top: 0.5rem;
}

/* 子菜单项 */
html[lang="ja-JP"] .primary-menu-container .sub-menu a,
html[lang="ja"] .primary-menu-container .sub-menu a {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    letter-spacing: 0.06em;
}

html[lang="ja-JP"] .primary-menu-container .sub-menu a::after,
html[lang="ja"] .primary-menu-container .sub-menu a::after {
    display: none;
}

html[lang="ja-JP"] .primary-menu-container .sub-menu a:hover,
html[lang="ja"] .primary-menu-container .sub-menu a:hover {
    background: linear-gradient(90deg, rgba(30, 136, 229, 0.08) 0%, rgba(30, 136, 229, 0.04) 100%);
    padding-left: 1.75rem;
}

/* ==========================================================================
   语言切换器样式优化 - Language Switcher Style Optimization
   ========================================================================== */

/* 语言切换按钮 - 优化视觉效果 */
html[lang="ja-JP"] .language-dropdown-toggle,
html[lang="ja"] .language-dropdown-toggle {
    gap: 0.625rem;
    padding: 0.625rem 1.125rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html[lang="ja-JP"] .language-dropdown-toggle:hover,
html[lang="ja"] .language-dropdown-toggle:hover {
    background: linear-gradient(135deg, rgba(30, 136, 229, 0.05) 0%, rgba(30, 136, 229, 0.02) 100%);
    transform: translateY(-1px);
}

/* 国旗图标 - 优化尺寸和阴影 */
html[lang="ja-JP"] .language-dropdown-toggle .lang-flag,
html[lang="ja"] .language-dropdown-toggle .lang-flag {
    width: 22px;
    height: 16px;
    border-radius: 3px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* 语言下拉菜单 - 优化样式 */
html[lang="ja-JP"] .language-dropdown-menu,
html[lang="ja"] .language-dropdown-menu {
    min-width: 180px;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    padding: 0.625rem 0;
}

/* 语言选项 */
html[lang="ja-JP"] .language-dropdown-menu a,
html[lang="ja"] .language-dropdown-menu a {
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    font-size: 0.9rem;
    letter-spacing: 0.04em;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html[lang="ja-JP"] .language-dropdown-menu a:hover,
html[lang="ja"] .language-dropdown-menu a:hover {
    background: linear-gradient(90deg, rgba(30, 136, 229, 0.08) 0%, rgba(30, 136, 229, 0.04) 100%);
    padding-left: 1.5rem;
}

html[lang="ja-JP"] .language-dropdown-menu .current-lang a,
html[lang="ja"] .language-dropdown-menu .current-lang a {
    background: linear-gradient(90deg, rgba(30, 136, 229, 0.1) 0%, rgba(30, 136, 229, 0.05) 100%);
    font-weight: 600;
}

html[lang="ja-JP"] .language-dropdown-menu .lang-flag,
html[lang="ja"] .language-dropdown-menu .lang-flag {
    width: 22px;
    height: 16px;
    border-radius: 3px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* ==========================================================================
   移动端菜单按钮优化 - Mobile Menu Toggle Optimization
   ========================================================================== */

html[lang="ja-JP"] .menu-toggle:hover,
html[lang="ja"] .menu-toggle:hover {
    transform: scale(1.05);
}

/* ==========================================================================
   响应式设计 - Responsive Design
   ========================================================================== */

/* 平板设备 (1024px 以下) */
@media (max-width: 1024px) {
    html[lang="ja-JP"] .primary-menu-container ul,
    html[lang="ja"] .primary-menu-container ul {
        gap: 1.5rem;
    }
    
    html[lang="ja-JP"] .primary-menu-container a,
    html[lang="ja"] .primary-menu-container a {
        font-size: 0.9rem;
        padding: 0.5rem 0.625rem;
    }
    
    html[lang="ja-JP"] .main-navigation,
    html[lang="ja"] .main-navigation {
        gap: 2rem;
    }
}

/* 移动设备 (768px 以下) */
@media (max-width: 768px) {
    /* 移动端菜单项 */
    html[lang="ja-JP"] .primary-menu-container a,
    html[lang="ja"] .primary-menu-container a {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
    
    html[lang="ja-JP"] .primary-menu-container a::after,
    html[lang="ja"] .primary-menu-container a::after {
        display: none;
    }
    
    html[lang="ja-JP"] .primary-menu-container a:hover,
    html[lang="ja"] .primary-menu-container a:hover {
        background: linear-gradient(90deg, rgba(30, 136, 229, 0.08) 0%, rgba(30, 136, 229, 0.04) 100%);
        padding-left: 2rem;
    }
    
    /* 移动端子菜单 */
    html[lang="ja-JP"] .primary-menu-container .sub-menu a,
    html[lang="ja"] .primary-menu-container .sub-menu a {
        padding-left: 2.5rem;
        font-size: 0.95rem;
    }
    
    html[lang="ja-JP"] .primary-menu-container .sub-menu a:hover,
    html[lang="ja"] .primary-menu-container .sub-menu a:hover {
        padding-left: 3rem;
    }
    
    /* 移动端语言切换器 */
    html[lang="ja-JP"] .language-dropdown-toggle,
    html[lang="ja"] .language-dropdown-toggle {
        padding: 0.875rem 1.25rem;
        font-size: 1rem;
    }
}

/* 小型移动设备 (480px 以下) */
@media (max-width: 480px) {
    html[lang="ja-JP"] .site-header .container,
    html[lang="ja"] .site-header .container {
        padding-top: 1rem;
        padding-bottom: 1rem;
    }
    
    html[lang="ja-JP"] .site-branding .custom-logo,
    html[lang="ja"] .site-branding .custom-logo {
        max-height: 40px;
    }
    
    html[lang="ja-JP"] .site-title,
    html[lang="ja"] .site-title {
        font-size: 1.25rem;
    }
}