/* 主容器样式 */
.main-container {
    margin-top: var(--header-height);
    padding: 20px;
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr var(--sidebar-width);
    gap: 20px;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

/* 左侧边栏样式 */
.left-sidebar {
    position: sticky;
    top: calc(var(--header-height) + 20px);
    height: calc(100vh - var(--header-height) - 40px);
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px var(--shadow-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.category-nav h2 {
    margin-bottom: 15px;
    font-size: 18px;
    color: var(--primary-color);
}

.category-list li {
    margin-bottom: 10px;
    display: flex;
    flex-direction: row;
    border-radius: 5px;
    transition: all 0.3s;
    height: 38px;
    align-items: center;
}

.category-list li:hover {
    background-color: var(--sidebar-hover-bg);
}

.category-list li.active {
    color: var(--primary-color);
    background-color: var(--sidebar-hover-bg);
}

.category-list a {
    margin-left: 5px;
    display: block;
    border-radius: 4px;
    transition: all 0.3s;
    font-size: 14px;
}

.category-list a:hover {
    color: var(--primary-color);
}

.quick_nav_icon {
    width: 20px;
}

/* 内容区域样式 */
.content {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px var(--shadow-color);
}

.feed-container {
    display: grid;
    gap: 20px;
}

.loading {
    text-align: center;
    padding: 20px;
    color: var(--text-color);
    opacity: 0.7;
}

/* 右侧边栏样式 */
.right-sidebar {
    position: sticky;
    top: calc(var(--header-height) + 20px);
    height: calc(100vh - var(--header-height) - 40px);
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 10px;
    box-shadow: 0 2px 4px var(--shadow-color);
}

.title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 响应式布局 */
@media screen and (max-width: 1200px) {
    .main-container {
        grid-template-columns: 200px 1fr 200px;
    }
}

@media screen and (max-width: 992px) {
    .main-container {
        grid-template-columns: 1fr;
    }

    .left-sidebar,
    .right-sidebar {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav-menu {
        display: none;
    }

    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: #fff;
        padding: 20px;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
}

.aside-footer {
    width: 100%;
    height: auto;
    font-size: 12px;
    color: var(--text-color3);
    padding: 5px;
}


.friend-link {
    width: 100%;
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 10px;
}

.friend-link h4 {
    color: var(--primary-color);
}

.friend-link-list {
    margin-top: 10px;
    width: 100%;
    font-size: 12px;
    color: var(--text-color3);
}