/* 内容布局样式文件 - 包含主内容区、左侧导航栏等样式 */

/* 主内容区布局 */
.content-main {
    max-width: 1600px;
    margin: 0 auto;
    padding: 40px 60px;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 50px;
    align-items: start;
}

/* 左侧导航 - 移除阴影，使用简洁边框 */
.sidebar-nav {
    position: sticky;
    top: 100px;
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.sidebar-header {
    background: linear-gradient(135deg, var(--theme-primary) 0%, var(--theme-primary-light) 100%);
    color: var(--white);
    padding: 20px 24px;
    text-align: center;
    position: relative;
}

.sidebar-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
}

.sidebar-header h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
}

.sidebar-menu {
    padding: 8px 0;
}

.sidebar-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sidebar-item {
    position: relative;
    margin: 2px 0;
}

.sidebar-link {
    display: flex;
    align-items: center;
    padding: 14px 24px;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border-left: 3px solid transparent;
}

.sidebar-link i {
    width: 18px;
    margin-right: 12px;
    text-align: center;
    color: var(--text-light);
    transition: color 0.3s;
}

.sidebar-link span {
    flex: 1;
}

.sidebar-arrow {
    margin-left: auto;
    margin-right: 0;
    font-size: 12px;
    transition: transform 0.3s;
}

.sidebar-item:hover .sidebar-link {
    background: rgba(0, 81, 142, 0.04);
    color: var(--theme-primary);
    border-left-color: var(--theme-primary);
}

.sidebar-item:hover .sidebar-link i {
    color: var(--theme-primary);
}

.sidebar-item.active .sidebar-link {
    background: linear-gradient(135deg, rgba(0, 81, 142, 0.08) 0%, rgba(0, 81, 142, 0.04) 100%);
    color: var(--theme-primary);
    border-left-color: var(--theme-primary);
    font-weight: 600;
}

.sidebar-item.active .sidebar-link i {
    color: var(--theme-primary);
}

/* 子菜单 */
.sidebar-submenu {
    list-style: none;
    padding: 0;
    margin: 0;
    background: #FAFBFC;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-item.has-submenu.active .sidebar-submenu {
    max-height: 300px;
}

.sidebar-item.has-submenu.active .sidebar-arrow {
    transform: rotate(180deg);
}

.sidebar-sublink {
    display: block;
    padding: 12px 24px 12px 54px;
    color: var(--text-gray);
    text-decoration: none;
    font-size: 13px;
    font-weight: 400;
    transition: all 0.3s;
    border-left: 3px solid transparent;
    position: relative;
}

.sidebar-sublink::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 4px;
    background: var(--text-light);
    border-radius: 50%;
    transition: all 0.3s;
}

.sidebar-sublink:hover {
    background: rgba(0, 81, 142, 0.06);
    color: var(--theme-primary);
    border-left-color: var(--theme-primary);
    padding-left: 58px;
}

.sidebar-sublink:hover::before {
    background: var(--theme-primary);
    transform: translateY(-50%) scale(1.5);
}

.sidebar-sublink.active{
    background: rgba(0, 81, 142, 0.06);
    color: var(--theme-primary);
    border-left-color: var(--theme-primary);
    padding-left: 58px;
}

.sidebar-sublink.active::before {
    background: var(--theme-primary);
    transform: translateY(-50%) scale(1.5);
}
/* 右侧内容区 */
.content-area {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-light);
}

/* 滚动条优化 */
.sidebar-nav::-webkit-scrollbar,
.content-area::-webkit-scrollbar {
    width: 6px;
}

.sidebar-nav::-webkit-scrollbar-track,
.content-area::-webkit-scrollbar-track {
    background: #F3F4F6;
    border-radius: 3px;
}

.sidebar-nav::-webkit-scrollbar-thumb,
.content-area::-webkit-scrollbar-thumb {
    background: var(--theme-primary);
    border-radius: 3px;
}

.sidebar-nav::-webkit-scrollbar-thumb:hover,
.content-area::-webkit-scrollbar-thumb:hover {
    background: var(--theme-primary-light);
}

/* 响应式 - 内容布局部分 */
@media (max-width: 1400px) {
    .content-main {
        padding-left: 30px;
        padding-right: 30px;
    }
}

@media (max-width: 1200px) {
    .content-main {
        grid-template-columns: 260px 1fr;
        gap: 30px;
    }
}

@media (max-width: 992px) {
    .content-main {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 30px 20px;
    }
    
    .sidebar-nav {
        position: static;
        order: 2;
        margin-top: 30px;
    }
    
    .content-area {
        order: 1;
    }
}

@media (max-width: 480px) {
    .content-main {
        padding: 20px 15px;
    }
    
    .sidebar-nav {
        border-radius: 8px;
    }
    
    .sidebar-header {
        padding: 15px 20px;
    }
    
    .sidebar-link {
        padding: 12px 20px;
    }
}