/* ==========================================================================
   组件名称: mx-certificates.css
   视觉规范: 0圆角, 高对比度, 品牌色 #111418 / #E32D2D
   ========================================================================== */

.mx-cert-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 !important; /* 👈 核心修改：干掉原本的 3rem 0，把留白权全部上交给容器 */
    font-family: inherit;
}

/* =========================================
   🛡️ MX Matrix 终极防御：Certificates 模块
========================================= */

/* 1. 外部绝对清零：彻底干掉 WordPress 主题默认的 20px 留白 */
body .inside-article:has(.mx-cert-section),
body .entry-content:has(.mx-cert-section) {
    padding: 0 !important; 
}

/* 2. 电脑端 (≥769px)：容器接管，上下左右绝对 30px */
@media (min-width: 769px) {
    .mx-matrix-wrapper:has(.mx-cert-section) .mx-container {
        padding: 30px !important; 
        max-width: 1640px; 
        margin: 0 auto;    
    }
}

/* 3. 手机端 (≤768px)：容器接管，上下 30px，左右 10px */
@media (max-width: 768px) {
    .mx-matrix-wrapper:has(.mx-cert-section) .mx-container {
        padding: 30px 10px !important; 
    }
}

/* --- 分类过滤导航栏 --- */
.mx-cert-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
    justify-content: center;
}

.mx-filter-btn {
    background: transparent;
    border: 2px solid #111418;
    color: #111418;
    padding: 0.6rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    border-radius: 0; 
    transition: all 0.2s ease;
}

.mx-filter-btn:hover,
.mx-filter-btn.active {
    background-color: #E32D2D;
    border-color: #E32D2D;
    color: #ffffff;
}

/* --- 证书网格系统 --- */
.mx-cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2.5rem;
    align-items: stretch;
}

/* --- 证书卡片 --- */
.mx-cert-card {
    background-color: #ffffff;
    border: 2px solid #111418;
    border-radius: 0; 
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    flex-direction: column;
}

.mx-cert-card:hover {
    transform: translateY(-6px);
    box-shadow: 8px 8px 0px 0px #E32D2D; 
}

/* --- 隐藏状态 (配合 JS 过滤) --- */
.mx-cert-card.mx-hidden {
    display: none !important;
}

/* --- 图片展示区 --- */
.mx-cert-image-wrapper {
    border-bottom: 2px solid #111418;
    background: #f8f9fa;
    padding: 2rem 1.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.mx-cert-img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08); 
}

/* --- 文本内容区 --- */
.mx-cert-content {
    padding: 1.8rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.mx-cert-title {
    font-size: 1.2rem;
    color: #111418;
    margin: 0 0 1.2rem 0;
    font-weight: 700;
    line-height: 1.4;
    border-left: 4px solid #E32D2D;
    padding-left: 0.8rem;
}

.mx-cert-details {
    list-style: none;
    padding: 0;
    margin: 0; 
    font-size: 0.9rem;
    color: #444;
}

.mx-cert-details li {
    margin-bottom: 0.8rem;
    border-bottom: 1px solid #eaeaea;
    padding-bottom: 0.4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mx-cert-details li:last-child {
    margin-bottom: 0;
    border-bottom: none;
}

.mx-cert-details strong {
    color: #111418;
    font-weight: 700;
    text-align: right;
    max-width: 60%;
}

/* --- 移动端专属优化 (Mobile Responsiveness) --- */ 
@media (max-width: 768px) {
    .mx-cert-section {
        padding: 0 !important; /* 👈 核心修改：干掉原本的上下 padding */
    }

    .mx-cert-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem; 
    }

    .mx-cert-filters {
        gap: 0.5rem;
        margin-bottom: 1.5rem; 
    }
    
    .mx-filter-btn {
        flex: 1 1 100%; 
        padding: 0.8rem;
        font-size: 0.9rem;
        text-align: center;
    }

    .mx-cert-image-wrapper {
        padding: 1.5rem 1rem;
    }

    .mx-cert-content {
        padding: 1.2rem;
    }

    .mx-cert-details strong {
        max-width: 70%; 
        word-wrap: break-word; 
    }
}