/* ========================================
   友情链接和图片广告样式
   ======================================== */

/* 友情链接容器 */
.friend-links-container {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    padding: 20px 0;
}

.friend-link-item {
    color: #666;
    text-decoration: none;
    padding: 8px 16px;
    background: #f8f9fa;
    border-radius: 4px;
    transition: all 0.3s;
    font-size: 14px;
}

.friend-link-item:hover {
    color: #2196F3;
    background: #e3f2fd;
    text-decoration: none;
}

/* 广告容器样式 */
.ad-banner-container {
    width: 100%;
    max-width: 1200px;
    margin: 20px auto;
    text-align: center;
    overflow: hidden;
}

.ad-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    padding: 0;
    overflow: hidden;
}

.ad-sidebar-container {
    width: 100%;
    margin: 0;
    text-align: center;
    padding: 0;
    overflow: hidden;
}

/* 广告项 */
.ad-item {
    display: inline-block;
    position: relative;
}

.ad-item a {
    display: block;
    text-decoration: none;
}

.ad-image {
    display: block;
    max-width: 100%;
    height: auto;
    object-fit: cover;
}

/* 隐藏广告容器（当没有广告时） */
.ad-banner-container[style*="display: none"],
.ad-container[style*="display: none"],
.ad-sidebar-container[style*="display: none"] {
    display: none !important;
}

/* 空广告容器不占位 */
.ad-container:empty,
.ad-sidebar-container:empty {
    display: none;
}

/* 有内容的广告容器添加间距 */
.ad-container:not(:empty) {
    margin: 20px auto;
    padding: 10px 0;
}

.ad-sidebar-container:not(:empty) {
    margin: 15px 0;
}

/* 响应式广告 */
@media (max-width: 768px) {
    .friend-links-container {
        gap: 10px;
    }

    .friend-link-item {
        padding: 6px 12px;
        font-size: 13px;
    }

    .ad-banner-container,
    .ad-container {
        padding: 5px 0;
        margin: 10px auto;
    }

    .ad-image {
        max-width: 100% !important;
        height: auto !important;
    }
}