/* ===== tools 公共样式 ===== */
.tools-catalog{
    min-height: 100vh;
    padding: 120px 0 80px;
}

.tools-catalog .section-title{
    text-align: center;
    margin-bottom: 3rem;
}

.tools-catalog .section-title h2{
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tools-catalog .section-title p{
    font-size: 1.2rem;
    color: var(--text-gray);
}

/* 新增：搜索和筛选控制区域 */
.tools-controls {
    max-width: 800px;
    margin: 0 auto 3rem;
    padding: 0 1rem;
}

/* 搜索框样式 */
.search-box {
    position: relative;
    margin-bottom: 1.5rem;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-gray);
    pointer-events: none;
}

.search-box input {
    width: 100%;
    padding: 1rem 1rem 1rem 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--card-bg);
    color: var(--text-light);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.1);
}

/* 筛选按钮样式 */
.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
    justify-content: center;
}

.filter-btn {
    padding: 0.6rem 1.2rem;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: var(--card-bg);
    color: var(--text-gray);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    font-weight: 500;
}

.filter-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.filter-btn.active {
    background: var(--gradient-accent);
    color: #fff;
    border-color: transparent;
}

/* 结果计数器 */
.results-count {
    text-align: center;
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-top: 1rem;
    opacity: 0.8;
}

/* 工具网格布局 */
.tools-grid{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    transition: all 0.3s ease;
}

/* 少项目时的宽松布局 */
.tools-grid.layout-sparse {
    max-width: 800px;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

/* 多项目时的紧凑布局 */
.tools-grid.layout-dense {
    max-width: 1200px;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.tool-card{
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all .3s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.tool-card:hover{
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 20px 40px rgba(0, 198, 255, .1);
}

.tool-icon{
    width: 80px;
    height: 80px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.tool-icon i{
    font-size: 2rem;
    color: #fff;
}

.tool-card h3{
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.tool-card p{
    color: var(--text-gray);
    line-height: 1.6;
    margin: 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .tools-grid.layout-dense {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1rem;
    }

    .tool-card {
        padding: 1.5rem;
    }

    .tool-icon {
        width: 60px;
        height: 60px;
    }

    .tool-icon i {
        font-size: 1.5rem;
    }
}

/* 无结果提示 */
.no-results {
    text-align: center;
    color: var(--text-gray);
    padding: 3rem;
    grid-column: 1 / -1;
}

.no-results i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}