/* 分类网格 */
.categories-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
}

.category-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 25px;
    transition: var(--transition);
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.category-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: white;
    font-size: 1.5rem;
}

.category-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.category-card p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.5;
}

.category-stats {
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--border);
    padding-top: 15px;
}

/* 工具卡片 */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.tool-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    transition: var(--transition);
    position: relative;
}

.tool-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary-light);
    box-shadow: var(--shadow);
}

.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.tool-icon-small {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
}

.tool-actions {
    display: flex;
    gap: 10px;
}

.favorite-btn, .info-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 5px;
    transition: var(--transition);
}

.favorite-btn:hover, .info-btn:hover {
    color: var(--primary);
}

.tool-card h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.tool-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
    line-height: 1.5;
}

.tool-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.tool-tag {
    background: var(--surface-dark);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.8rem;
}

.tool-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.use-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

.use-btn:hover {
    background: var(--primary-dark);
}

/* 特色工具 */
.featured-tools {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.featured-tool {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px;
    position: relative;
    overflow: hidden;
}

.featured-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--warning);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.featured-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: white;
    font-size: 2rem;
}

.featured-tool h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.featured-tool p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.feature-list {
    list-style: none;
    margin-bottom: 25px;
}

.feature-list li {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.feature-list li:before {
    content: "✓";
    color: var(--success);
    font-weight: bold;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.stat-card i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.stat-card h3 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-card p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* 列表视图 */
.list-view .tools-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.list-view .tool-card {
    display: flex;
    align-items: center;
    padding: 15px;
    gap: 20px;
}

.list-view .tool-header {
    margin-bottom: 0;
    flex: 0 0 auto;
}

.list-view .tool-content {
    flex: 1;
}

.list-view .tool-footer {
    flex: 0 0 auto;
}