/* 主导航菜单样式 */
.main-navigation {
    background: linear-gradient(135deg, #1a237e 0%, #283593 100%);
    padding: 0 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.main-navigation ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-navigation > ul > li {
    position: relative;
}

.main-navigation > ul > li > a {
    color: white;
    text-decoration: none;
    padding: 15px 20px;
    display: block;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s;
    border-right: 1px solid rgba(255,255,255,0.1);
}

.main-navigation > ul > li:last-child > a {
    border-right: none;
}

.main-navigation > ul > li > a:hover {
    background: rgba(255,255,255,0.1);
    color: #ffeb3b;
}

/* 下拉菜单 */
.main-navigation ul ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    min-width: 250px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    border-radius: 0 0 8px 8px;
    z-index: 999;
    border-top: 3px solid #ff5722;
}

.main-navigation ul ul li {
    border-bottom: 1px solid #f0f0f0;
}

.main-navigation ul ul li:last-child {
    border-bottom: none;
}

.main-navigation ul ul a {
    color: #333;
    padding: 12px 20px;
    display: block;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
}

.main-navigation ul ul a:hover {
    background: #f8f9fa;
    color: #ff5722;
    padding-left: 25px;
}

/* 显示下拉菜单 */
.main-navigation li:hover > ul {
    display: block;
}

/* 二级菜单指示器 */
.main-navigation > ul > li.menu-item-has-children > a:after {
    content: ' ▼';
    font-size: 12px;
    margin-left: 5px;
    opacity: 0.7;
}

/* 移动端响应式 */
@media (max-width: 768px) {
    .main-navigation {
        padding: 0;
        border-radius: 0;
    }
    
    .main-navigation ul {
        flex-direction: column;
    }
    
    .main-navigation > ul > li > a {
        border-right: none;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .main-navigation ul ul {
        position: static;
        box-shadow: none;
        border: none;
        background: rgba(0,0,0,0.05);
    }
    
    .main-navigation ul ul a {
        padding-left: 30px;
    }
    
    .main-navigation ul ul a:hover {
        padding-left: 35px;
    }
}

/* 语言切换器集成 */
.main-navigation .language-switcher {
    margin-left: auto;
    padding: 15px 20px;
}

.main-navigation .language-switcher a {
    color: white;
    text-decoration: none;
    padding: 5px 10px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.3s;
}

.main-navigation .language-switcher a:hover {
    background: rgba(255,255,255,0.1);
    border-color: white;
}

/* 当前菜单项高亮 */
.current-menu-item > a,
.current-category-parent > a {
    background: rgba(255,87,34,0.2) !important;
    color: #ffeb3b !important;
    border-left: 3px solid #ff5722;
}