/* 
 * 功能页面CSS
 * 样式基于用户提供的模板
 */

/* 功能页面基本样式 */
.feature-page {
    padding: 20px 0 60px;
}

.page-title {
    text-align: center;
    margin-bottom: 30px;
    color: var(--text-primary);
}

/* 功能分类标题 */
.feature-category {
    margin-bottom: 40px;
}

.category-title {
    margin-bottom: 20px;
    color: var(--text-primary);
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

/* 功能卡片样式 */
.feature-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    position: relative;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.feature-card:hover,
.feature-card.hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.feature-card-icon {
    font-size: 28px;
    margin-right: 15px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(57, 118, 203, 0.1);
    border-radius: 50%;
    flex-shrink: 0;
}

.feature-card-content {
    flex-grow: 1;
}

.feature-card-content h3 {
    margin: 0 0 5px;
    font-size: 18px;
    color: var(--text-primary);
}

.feature-card-content p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 14px;
}

.feature-card-link {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    border-radius: 50%;
    color: #fff;
    opacity: 0;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-card-link,
.feature-card.hover .feature-card-link {
    opacity: 1;
}

.feature-card-link svg {
    width: 16px;
    height: 16px;
}

.feature-card-link:hover {
    background-color: var(--primary-hover);
    transform: translateY(-50%) scale(1.1);
}

/* 媒体查询 - 平板适配 */
@media (max-width: 991px) {
    .feature-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 媒体查询 - 移动设备适配 */
@media (max-width: 767px) {
    .feature-cards {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .feature-card {
        padding: 15px;
    }
    
    .feature-card-icon {
        font-size: 24px;
        width: 40px;
        height: 40px;
        margin-right: 10px;
    }
    
    .feature-card-content h3 {
        font-size: 16px;
    }
    
    .feature-card-content p {
        font-size: 13px;
    }
    
    .feature-card-link {
        opacity: 1;
        width: 28px;
        height: 28px;
    }
    
    .feature-card-link svg {
        width: 14px;
        height: 14px;
    }
}

/* 资料导航容器样式 */
.material-navigation-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 15px;
    max-height: 120px; /* 设置默认高度，超出部分隐藏 */
    overflow: hidden;
    transition: max-height 0.3s ease;
}

/* 展开状态样式 */
.material-navigation-container.expanded {
    max-height: 1000px; /* 设置足够大的高度以显示所有内容 */
}

/* 导航展开/收起按钮样式 */
.nav-toggle-btn {
    margin-top: 5px;
    background-color: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 5px 15px;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.nav-toggle-btn:hover {
    background-color: #e9e9e9;
}

/* 移动端隐藏特定的元素 */
@media (min-width: 768px) {
    .mobile-only {
        display: none;
    }
    
    .material-navigation-container {
        max-height: none; /* 桌面端默认展开 */
    }
}