/* ======================================
   方案案例 - 侧边栏 + 主内容布局
   ====================================== */
.case-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 30px;
    align-items: start;
}

.case-sidebar {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 20px;
    position: sticky;
    top: 20px;
}

.sidebar-title {
    font-size: 16px;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid #2563eb;
}

.sidebar-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav li {
    margin-bottom: 4px;
}

.sidebar-link {
    display: block;
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 14px;
    color: #4b5563;
    text-decoration: none;
    transition: all 0.2s ease;
}

.sidebar-link:hover {
    background: #eff6ff;
    color: #2563eb;
}

.sidebar-link.active {
    background: #eff6ff;
    color: #2563eb;
    font-weight: 600;
}

.sidebar-link.disabled {
    color: #d1d5db;
    cursor: default;
    pointer-events: none;
}

.sidebar-link.disabled small {
    color: #f59e0b;
    font-size: 11px;
}

.case-main {
    min-width: 0;
}

/* ======================================
   Banner 调整：铺满 & 缩小
   ====================================== */
.banner-section {
    width: 100%;
}

.banner {
    width: 100%;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}

.banner-content {
    max-width: 1200px;
    padding: 0 20px;
}

.banner h1 {
    font-size: 42px;
    margin-bottom: 8px;
    color: #ffffff;
    text-shadow:
        0 1px 0 #cccccc,
        0 2px 0 #c9c9c9,
        0 3px 0 #bbb,
        0 4px 0 #b9b9b9,
        0 5px 0 #aaa,
        0 6px 1px rgba(0,0,0,.1),
        0 0 5px rgba(0,0,0,.1),
        0 1px 3px rgba(0,0,0,.3),
        0 3px 5px rgba(0,0,0,.2),
        0 5px 10px rgba(0,0,0,.25),
        0 10px 10px rgba(0,0,0,.2),
        0 20px 20px rgba(0,0,0,.15);
}

.banner p {
    font-size: 14px;
    color: #ccd3e0;
    margin: 0;
}

/* ======================================
   Tab 筛选按钮
   ====================================== */
.tab-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 20px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.tab {
    padding: 8px 20px;
    border-radius: 6px;
    background: #fff;
    border: none;
    cursor: pointer;
    font-size: 15px;
    transition: .3s;
}

.tab.active {
    background: #2563eb;
    color: #fff;
}

.tab-wrap .tab {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 6px;
    background: #fff;
    color: #333;
    text-decoration: none;
    font-size: 15px;
    cursor: pointer;
    transition: .3s;
    border: none;
}

.tab-wrap .tab.active,
.tab-wrap .tab:hover {
    background: #2563eb;
    color: #fff;
}

/* ======================================
   案例卡片网格
   ====================================== */
.case-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 60px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, .05);
    transition: .3s;
    padding: 0;
    text-align: left;
    border: 2px solid #d1d5db;
    text-decoration: none;
    color: inherit;
    display: block;
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, .1);
}

.case-img {
    height: 200px;
    background: #ede9fe;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-info {
    padding: 20px;
}

.case-title {
    font-size: 17px;
    color: #1a2b48;
    margin-bottom: 8px;
    font-weight: 600;
}

.case-tag {
    font-size: 12px;
    color: #2563eb;
    background: #e8f0fe;
    padding: 2px 6px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 10px;
}

.case-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
    margin-bottom: 15px;
}

.case-btn {
    display: inline-block;
    padding: 8px 16px;
    background: #2563eb;
    color: #fff;
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
}

/* ======================================
   案例详情页
   ====================================== */
body {
    background: #f7f8fa;
}

/* ======================================
   Tabler 图标样式
   ====================================== */
.case-img i {
    color: #7c3aed;
    font-size: 48px;
}
.card-icon i {
    display: block;
}
.blog-meta i {
    font-size: 14px;
    vertical-align: middle;
}

/* ======================================
   案例列表页响应式媒体查询
   ====================================== */

/* 平板 + 侧边栏折叠 */
@media (max-width: 1024px) {
    .case-layout {
        grid-template-columns: 200px 1fr;
        gap: 20px;
    }

    .case-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .banner h1 {
        font-size: 36px;
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .case-layout {
        grid-template-columns: 1fr;
    }
    .case-sidebar {
        position: static;
        padding: 12px;
        margin-bottom: 20px;
    }
    .sidebar-nav {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
    }
    .sidebar-nav li {
        margin-bottom: 0;
    }
    .sidebar-link {
        padding: 6px 12px;
        font-size: 13px;
    }
    .sidebar-title {
        font-size: 14px;
        margin-bottom: 10px;
        padding-bottom: 8px;
    }

    /* Banner缩小 */
    .banner {
        height: 140px;
    }
    .banner h1 {
        font-size: 28px;
    }
    .banner p {
        font-size: 13px;
    }

    /* Tab按钮调整 */
    .tab-wrap {
        padding: 20px 15px;
        gap: 8px;
    }
    .tab-wrap .tab {
        padding: 6px 15px;
        font-size: 14px;
    }

    /* 案例卡片单列布局 */
    .case-container {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 15px 40px;
    }
    .case-img {
        height: 180px;
    }
    .case-info {
        padding: 15px;
    }
    .case-title {
        font-size: 16px;
    }
    .case-desc {
        font-size: 13px;
    }
    .case-btn {
        padding: 6px 14px;
        font-size: 13px;
    }
}

/* 小屏手机适配 */
@media (max-width: 480px) {
    .banner {
        height: 120px;
    }
    .banner h1 {
        font-size: 24px;
    }
    .tab-wrap .tab {
        padding: 5px 12px;
        font-size: 13px;
    }
    .case-img {
        height: 160px;
    }
    .case-info {
        padding: 12px;
    }
}