/* 基础样式 */
.oak-knowledge-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.oak-knowledge-header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
}

.oak-knowledge-title {
    font-size: 2.5rem;
    color: #1e293b;
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.oak-knowledge-desc {
    color: #64748b;
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
}

/* 搜索区域 */
.oak-knowledge-search {
    margin-bottom: 2.5rem;
}

.oak-knowledge-search-form {
    display: flex;
    gap: 0.75rem;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.oak-knowledge-search-input {
    flex: 1;
    padding: 0.875rem 1.25rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.25s ease;
    min-height: 54px;
    box-sizing: border-box;
    color: #1e293b;
}

.oak-knowledge-search-input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.oak-knowledge-search-btn {
    background: #2563eb;
    color: white;
    border: none;
    padding: 0 1.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background 0.25s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 54px;
    box-sizing: border-box;
    white-space: nowrap;
}

.oak-knowledge-search-btn:hover {
    background: #1d4ed8;
}

/* 分类筛选 - 重点优化移动端横向滚动 */
.oak-knowledge-categories {
    margin-bottom: 2.5rem;
    /* 关键：允许横向滚动，隐藏纵向滚动条 */
    overflow-x: auto;
    overflow-y: hidden;
    /* 移动端顺滑滚动 */
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    /* 防止内容溢出容器 */
    width: 100%;
    /* 移动端增加顶部/底部内边距 */
    padding: 0.5rem 0;
}

/* 隐藏滚动条但保留滚动功能（Chrome/Safari） */
.oak-knowledge-categories::-webkit-scrollbar {
    height: 6px;
}

.oak-knowledge-categories::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 3px;
}

.oak-knowledge-categories::-webkit-scrollbar-thumb {
    background: #cbd5e0;
    border-radius: 3px;
}

.oak-knowledge-categories::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* 分类列表 - 关键：禁止换行，保持横向排列 */
.oak-knowledge-categories-list {
    display: flex;
    /* 禁止换行！！！ */
    flex-wrap: nowrap;
    gap: 0.75rem;
    list-style: none;
    padding: 0;
    margin: 0;
    /* 增加左右内边距，避免第一个/最后一个分类贴边 */
    padding: 0.25rem 0.5rem;
    /* 防止滚动时内容被截断 */
    min-width: max-content;
}

/* 分类项 - 确保不换行 */
.oak-knowledge-category-item {
    display: inline-flex;
    /* 禁止文字换行 */
    white-space: nowrap;
}

.oak-knowledge-category-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.625rem 1.25rem;
    background: #f8fafc;
    color: #64748b;
    border-radius: 999px;
    text-decoration: none;
    transition: all 0.25s ease;
    font-weight: 500;
    font-size: 0.9375rem;
    border: 1px solid transparent;
    /* 禁止文字换行 */
    white-space: nowrap;
    /* 防止文字溢出 */
    overflow: hidden;
    text-overflow: ellipsis;
    /* 最小宽度保证可读性 */
    min-width: fit-content;
}

.oak-knowledge-category-link:hover,
.oak-knowledge-category-link.active {
    background: #2563eb;
    color: white;
    transform: translateY(-2px);
    border-color: #3b82f6;
}

/* 知识列表 - 一行四个，每页10个 */
.oak-knowledge-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
    margin-bottom: 2rem;
}

/* 分页样式 */
.oak-knowledge-pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.oak-knowledge-pagination a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 0.375rem;
    border: 1px solid #e2e8f0;
    background: white;
    color: #64748b;
    text-decoration: none;
    transition: all 0.2s ease;
}

.oak-knowledge-pagination a:hover,
.oak-knowledge-pagination a.active {
    background: #2563eb;
    color: white;
    border-color: #2563eb;
}

.oak-knowledge-card {
    background: white;
    border-radius: 0.75rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.oak-knowledge-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
    border-color: #dae1e7;
}

.oak-knowledge-card-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
}

.oak-knowledge-card-title {
    font-size: 1.375rem;
    margin: 0 0 0.75rem 0;
    line-height: 1.4;
}

.oak-knowledge-card-title a {
    color: #1e293b;
    text-decoration: none;
    transition: color 0.25s ease;
}

.oak-knowledge-card-title a:hover {
    color: #2563eb;
}

.oak-knowledge-card-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.25rem;
    font-size: 0.875rem;
    color: #64748b;
}

.oak-knowledge-card-meta i {
    margin-right: 0.375rem;
}

/* 多分类标签样式 */
.oak-knowledge-card-categories {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.oak-knowledge-card-category {
    display: inline-flex;
    align-items: center;
    font-size: 0.8125rem;
    color: #2563eb;
    background: rgba(37, 99, 235, 0.1);
    padding: 0 8px;
    border-radius: 999px;
    font-weight: 500;
    height: 22px;
    line-height: 22px;
}

.oak-knowledge-card-body {
    padding: 1.5rem;
}

.oak-knowledge-card-excerpt {
    color: #64748b;
    margin: 0 0 1.25rem 0;
    line-height: 1.6;
}

.oak-knowledge-card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: #2563eb;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.25s ease;
}

.oak-knowledge-card-link:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

/* 无结果提示 */
.oak-knowledge-no-results {
    text-align: center;
    padding: 5rem 2rem;
    color: #64748b;
    background: #f8fafc;
    border-radius: 0.75rem;
    border: 1px dashed #e2e8f0;
    grid-column: span 3;
}

.oak-knowledge-no-results i {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    color: #cbd5e0;
}

.oak-knowledge-no-results h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: #1e293b;
}

/* 详情模态框 */
.oak-knowledge-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    overflow: hidden;
}

@media (max-width: 768px) {
    .oak-knowledge-modal-container {
        width: 100% !important;
        height: 100% !important;
        max-width: none !important;
        max-height: none !important;
        border-radius: 0 !important;
        margin: 0 !important;
        top: 0 !important;
    }
}

.oak-knowledge-modal-container {
    width: 100%;
    max-width: 1200px;
    top: 85px;
    bottom: 20px;
    margin: 0 auto;
    background: white;
    border-radius: 0.75rem;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
    max-height: calc(100vh - 110px);
}

.oak-knowledge-modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    position: sticky;
    top: 0;
    z-index: 10;
}

.oak-knowledge-modal-title {
    margin: 0;
    font-size: 1.5rem;
    color: #1e293b;
}

.oak-knowledge-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #64748b;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
}

.oak-knowledge-modal-close:hover {
    color: #dc2626;
    background: #fef2f2;
}

.oak-knowledge-modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.oak-knowledge-modal-content {
    line-height: 1.8;
    color: #1e293b;
}

.oak-knowledge-modal-meta {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

/* 多分类标签样式 - 模态框 */
.oak-knowledge-modal-categories {
    display: inline-flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.oak-knowledge-modal-category {
    display: inline-flex;
    align-items: center;
    background: rgba(37, 99, 235, 0.1);
    color: #2563eb;
    padding: 0.25rem 0.875rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    height: 28px;
    line-height: 28px;
}

.oak-knowledge-modal-number {
    display: inline-flex;
    align-items: center;
    background: rgba(100, 116, 139, 0.1);
    color: #64748b;
    padding: 0.25rem 0.875rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    height: 28px;
    line-height: 28px;
}

.oak-knowledge-modal-date {
    color: #64748b;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
}

.oak-knowledge-modal-date i {
    margin-right: 0.375rem;
    margin-left: 0.5rem;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .oak-knowledge-list {
        grid-template-columns: repeat(3, 1fr);
    }
    .oak-knowledge-no-results {
        grid-column: span 3;
    }
}

@media (max-width: 992px) {
    .oak-knowledge-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .oak-knowledge-no-results {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .oak-knowledge-title {
        font-size: 2rem;
    }
    
    .oak-knowledge-search-form {
        flex-direction: row;
        gap: 0.5rem;
    }
    
    .oak-knowledge-search-input {
        padding: 0.75rem 1rem;
        font-size: 1rem;
        min-height: 54px;
        flex: 1;
    }
    
    .oak-knowledge-search-btn {
        padding: 0 1rem;
        font-size: 0.9375rem;
        min-height: 54px;
        width: auto;
        flex-shrink: 0;
    }
    
    .oak-knowledge-list {
        grid-template-columns: 1fr;
    }
    .oak-knowledge-no-results {
        grid-column: span 1;
    }

    /* 移动端分类容器优化 */
    .oak-knowledge-categories {
        margin-bottom: 2rem;
        /* 移动端增加滚动条高度 */
        scrollbar-width: thin;
    }

    .oak-knowledge-categories-list {
        gap: 0.5rem;
        padding: 0.25rem 0.25rem;
    }

    .oak-knowledge-category-link {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
        gap: 0.25rem;
    }
}

/* 极小屏适配（如iPhone SE） */
@media (max-width: 375px) {
    .oak-knowledge-category-link {
        padding: 0.45rem 0.9rem;
        font-size: 0.8125rem;
    }
}