/* ============================================
   英文数据库导航 - 内容区样式
   全局布局（侧边栏/顶栏）与设计变量由模板提供，
   本文件只负责主内容区样式，适配模板设计语言。
   ============================================ */

/* 布局容器 */
.container {
    max-width: 1320px;
    margin: 0 auto;
}

/* ================= 页头 ================= */
.page-header { margin-bottom: 18px; text-align: center; }

.page-title {
    font-size: 24px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: .3px;
}
.cn-badge,
.en-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--brand), var(--brand-dark));
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    border-radius: 8px;
    padding: 4px 12px;
    margin-right: 10px;
    position: relative;
    top: -3px;
    box-shadow: 0 3px 10px rgba(47, 107, 255, .35);
}
.page-subtitle {
    margin-top: 8px;
    font-size: 13.5px;
    color: var(--text-3);
}
#totalCount {
    color: var(--brand);
    font-weight: 700;
}

/* ================= 搜索与筛选工具卡 ================= */
.search-section {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    padding: 16px 18px;
    margin-bottom: 18px;
    display: flex;
    flex-direction: column;
    gap: 13px;
}

/* 搜索框 */
.search-box {
    display: flex;
    align-items: center;
    width: 100%;
    background: #fff;
    border: 1.5px solid var(--border);
    border-radius: 12px;
    padding: 0 6px 0 14px;
    transition: border-color .2s, box-shadow .2s;
}
.search-box:focus-within {
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(47, 107, 255, .1);
}
.search-box input {
    flex: 1;
    min-width: 0;
    border: none;
    outline: none;
    background: transparent;
    padding: 10px 0;
    font-size: 13.5px;
    font-family: inherit;
    color: var(--text);
}
.search-box input::placeholder { color: var(--text-3); }
.search-box button {
    border: none;
    background: transparent;
    color: var(--text-3);
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color .15s;
}
.search-box button:hover { color: var(--brand); }
.search-box svg {
    width: 18px;
    height: 18px;
}

/* 分类筛选 */
.category-filter {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.filter-btn {
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 999px;
    padding: 6px 15px;
    font-size: 13px;
    font-family: inherit;
    color: var(--text-2);
    cursor: pointer;
    white-space: nowrap;
    transition: all .15s;
}
.filter-btn:hover {
    border-color: var(--brand);
    color: var(--brand);
}
.filter-btn.active {
    background: var(--brand);
    border-color: var(--brand);
    color: #fff;
    font-weight: 600;
}

/* ================= Banner 广告位 ================= */
.banner-wrap {
    margin-bottom: 18px;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--border);
    line-height: 0;
}
.banner-wrap img {
    display: block;
    width: 100%;
    height: auto;
}

/* ================= 数据库卡片网格 ================= */
.database-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(252px, 1fr));
    gap: 14px;
}
.database-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 18px;
    cursor: pointer;
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.database-card:hover {
    transform: translateY(-3px);
    border-color: rgba(47, 107, 255, .45);
    box-shadow: var(--shadow-card);
}
.database-header {
    display: flex;
    align-items: center;
    gap: 11px;
    min-width: 0;
}
.database-icon {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #fff;
    padding: 4px;
    object-fit: contain;
}
.database-name {
    font-size: 14.5px;
    font-weight: 700;
    color: var(--text);
    line-height: 1.4;
}
.database-description {
    flex: 1;
    font-size: 12.5px;
    line-height: 1.7;
    color: var(--text-2);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.database-tags {
    display: flex;
    gap: 6px;
}
.tag {
    background: var(--brand-light);
    color: var(--brand);
    font-size: 11.5px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
}

/* ================= 分页 ================= */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin: 24px 0 6px;
}
.page-btn {
    min-width: 36px;
    height: 36px;
    padding: 0 14px;
    border: 1px solid var(--border);
    background: var(--card);
    border-radius: 10px;
    font-size: 13px;
    font-family: inherit;
    color: var(--text-2);
    cursor: pointer;
    transition: all .15s;
}
.page-btn:hover:not(:disabled) {
    border-color: var(--brand);
    color: var(--brand);
}
.page-btn.active {
    background: var(--brand);
    border-color: var(--brand);
    color: #fff;
    font-weight: 600;
}
.page-btn:disabled {
    opacity: .45;
    cursor: not-allowed;
}

/* ================= 空状态 ================= */
.no-results {
    text-align: center;
    padding: 60px 0;
    color: var(--text-3);
}
.no-results svg {
    width: 44px;
    height: 44px;
    margin-bottom: 12px;
    opacity: .5;
}
.no-results p {
    font-size: 13.5px;
}

/* ================= 响应式 ================= */
@media (max-width: 900px) {
    .page-title { font-size: 21px; }
    .database-grid {
        grid-template-columns: repeat(auto-fill, minmax(216px, 1fr));
        gap: 12px;
    }
}

@media (max-width: 640px) {
    .search-section { padding: 13px 14px; }
    /* 分类按钮改横向滑动，避免换行占高 */
    .category-filter {
        flex-wrap: nowrap;
        overflow-x: auto;
        margin: 0 -14px;
        padding: 0 14px 4px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .category-filter::-webkit-scrollbar { display: none; }
    .filter-btn {
        flex-shrink: 0;
        padding: 6px 13px;
        font-size: 12.5px;
    }
    .database-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .database-card { padding: 13px; }
    .database-icon { width: 38px; height: 38px; }
    .database-name { font-size: 13.5px; }
    .database-description {
        -webkit-line-clamp: 2;
        font-size: 12px;
    }
    .page-btn {
        min-width: 32px;
        height: 32px;
        padding: 0 10px;
        font-size: 12px;
    }
    .no-results { padding: 40px 0; }
}

@media (max-width: 420px) {
    .database-grid { grid-template-columns: 1fr; }
    .database-description { -webkit-line-clamp: 3; }
}