/* 头部导航样式 - 渐变背景设计 */

/* 确保body和html没有padding/margin影响header */
body,
html {
    margin: 0 !important;
    padding: 0 !important;
    overflow-x: hidden;
}

/* 确保site容器不影响header */
#page.site,
.site {
    margin: 0 !important;
    padding: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    overflow-x: hidden;
}

/* 头部容器 */
.site-header {
    background: linear-gradient(135deg, #e3f2fd 0%, #ffffff 100%);
    position: relative;
    padding: 0;
    border-bottom: none;
    overflow: hidden;
    width: 100vw;
    max-width: 100vw;
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    left: 0;
    right: 0;
    box-sizing: border-box;
}

/* 确保header全宽显示，不受父容器限制 */
#page.site .site-header,
.site .site-header,
body .site-header {
    width: 100vw !important;
    max-width: 100vw !important;
    margin-left: calc(-50vw + 50%) !important;
    margin-right: calc(-50vw + 50%) !important;
    left: 0 !important;
    right: 0 !important;
    padding-left: 0 !important;
    padding-right: 0 !important;
    position: relative;
}

/* 渐变对角线分隔效果 */
.site-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #e3f2fd 0%, #e3f2fd 35%, transparent 35%, transparent 100%);
    pointer-events: none;
    z-index: 0;
}

.site-header .container {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

/* 品牌标识区域 */
.site-branding {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.site-title {
    font-size: 32px;
    font-weight: 700;
    margin: 0;
    line-height: 1.2;
}

.site-title a {
    color: #2196f3;
    text-decoration: none;
    transition: color 0.3s ease;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    letter-spacing: -0.5px;
}

.site-title a:hover {
    color: #1976d2;
}

.site-description {
    display: none; /* 隐藏描述，保持简洁 */
}

/* 导航菜单区域 */
.main-navigation {
    margin-top: 0;
    flex-shrink: 0;
}

.main-navigation ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 30px;
    margin: 0;
    padding: 0;
}

.main-navigation li {
    margin: 0;
    padding: 0;
    position: relative;
}

.main-navigation a {
    color: #666;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    padding: 8px 0;
    transition: color 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.main-navigation a:hover {
    color: #2196f3;
}

/* 下拉菜单箭头 */
.main-navigation .menu-item-has-children > a::after {
    content: '▼';
    font-size: 10px;
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.main-navigation .menu-item-has-children:hover > a::after {
    transform: rotate(180deg);
}

/* 下拉菜单 */
.main-navigation .sub-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: #fff;
    min-width: 180px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 10px 0;
    margin-top: 10px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    list-style: none;
}

.main-navigation .menu-item-has-children:hover .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.main-navigation .sub-menu li {
    margin: 0;
    padding: 0;
}

.main-navigation .sub-menu a {
    display: block;
    padding: 10px 20px;
    color: #333;
    font-size: 14px;
    white-space: nowrap;
}

.main-navigation .sub-menu a:hover {
    background: #f5f5f5;
    color: #2196f3;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    background: transparent;
    border: 2px solid #2196f3;
    color: #2196f3;
    padding: 10px 15px;
    cursor: pointer;
    font-size: 16px;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.menu-toggle:hover {
    background: #2196f3;
    color: #fff;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .site-header .container {
        padding: 20px 30px;
    }
    
    .main-navigation ul {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .site-header .container {
        padding: 15px 20px;
        flex-wrap: wrap;
    }
    
    .site-title {
        font-size: 24px;
    }
    
    .menu-toggle {
        display: block;
        order: 2;
    }
    
    .main-navigation {
        order: 3;
        width: 100%;
        margin-top: 15px;
    }
    
    .main-navigation ul {
        display: none;
        flex-direction: column;
        gap: 0;
        background: #fff;
        border-radius: 8px;
        padding: 10px 0;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        margin-top: 10px;
    }
    
    .main-navigation ul.active {
        display: flex;
    }
    
    .main-navigation li {
        width: 100%;
    }
    
    .main-navigation a {
        display: block;
        padding: 12px 20px;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .main-navigation li:last-child a {
        border-bottom: none;
    }
    
    .main-navigation .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        margin-top: 0;
        padding-left: 20px;
        background: #f8f9fa;
        border-radius: 0;
    }
    
    .main-navigation .menu-item-has-children > a::after {
        transform: rotate(0deg);
    }
}