/*
 * @kanway-css-index
 * 文件: css/cooperation/cooperation-case.css
 * 层级: 组件复用
 * 引用页面: 产品列表页（与 product.css 同引）
 * 依赖: product.css
 * 修改指引: 案例卡片网格 .case-section / .case-grid（与产品列表共用）
 * 索引: css/00-样式文件索引.css
 */
/* =====================================================
 * Cooperation Case Page
 * Guangdong Kanway Smart Technology Co., Ltd.
 * ===================================================== */

:root {
    --primary-blue: #1D5198;
    --secondary-blue: #3a7bd5;
    --accent-orange: #FC6B00;
    --white: #ffffff;
    --light-bg: #f8f9fa;
    --text-dark: #1a1a1a;
    --text-muted: #666;
    --border-color: #e1e5ea;
}

.case-section {
    padding: 50px 0 100px;
    background: var(--white);
}

/* .case-section .container — 版心见 header.css */

/* =====================================================
 * Filters
 * ===================================================== */
.case-filters {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    border: 1px solid var(--border-color);
    background: var(--white);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--primary-blue);
    background: var(--primary-blue);
    color: #fff;
}

/* =====================================================
 * Case Grid
 * ===================================================== */
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.case-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: opacity 0.35s ease, transform 0.35s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.case-grid .case-card.is-filter-hidden {
    display: none;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.case-card-img {
    height: 160px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f0f4f8, #e8eef5);
}

.case-card-img i {
    font-size: 2.5rem;
    color: var(--primary-blue);
    transition: all 0.3s ease;
}

.case-card:hover .case-card-img i {
    transform: scale(1.1);
}

.case-region {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--primary-blue);
    color: #fff;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 11px;
    font-weight: 600;
}

.case-card-content {
    padding: 20px;
}

.case-card-content h3 {
    font-size: 1.15rem;
    color: var(--text-dark);
    margin-bottom: 10px;
    font-weight: 600;
}

.case-card-content .case-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 12px;
}

.case-stats {
    display: flex;
    gap: 8px;
}

.case-stat {
    flex: 1;
    background: #f8f9fa;
    padding: 8px 6px;
    border-radius: 6px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.case-stat .stat-num {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.case-stat .stat-num .bx {
    display: block;
    font-size: 1.35rem;
    line-height: 1.2;
}

.case-stat .stat-label {
    font-size: 10px;
    color: var(--text-muted);
}

/* =====================================================
 * Responsive
 * ===================================================== */
@media (max-width: 1200px) {
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .case-section {
        padding: 40px 0 80px;
    }

    .case-grid {
        grid-template-columns: 1fr;
    }

    .case-filters {
        gap: 8px;
    }

    .filter-btn {
        padding: 6px 14px;
        font-size: 11px;
    }
}

/* Product-Light: case-card used as product tiles */
.case-grid a.case-card {
    text-decoration: none;
    color: inherit;
    display: block;
}

/* Product-Light: image area — cover fill */
.case-section .case-card-img {
    height: 260px;
    display: block;
    padding: 0;
    background: linear-gradient(135deg, #f0f4f8, #e8eef5);
}

@media (max-width: 1200px) {
    .case-section .case-card-img {
        height: 230px;
    }
}

@media (max-width: 768px) {
    .case-section .case-card-img {
        height: 200px;
    }
}

.case-section .case-card-img img {
    width: 100%;
    height: 100%;
    max-width: none;
    max-height: none;
    margin: 0;
    display: block;
    object-fit: cover;
    object-position: center;
}

.case-section .case-region {
    z-index: 2;
}

.case-card:hover .case-card-content h3 {
    color: var(--primary-blue);
}