/* Search Section */
.search-section {
    margin-bottom: 2rem;
    padding: 2rem;
    background: var(--white);
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

.search-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.search-container input {
    flex: 1;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 0.5rem;
    font-size: 1rem;
}

.search-container button {
    padding: 0.8rem 1.5rem;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.search-container button:hover {
    background-color: var(--secondary-color);
}

.filter-container {
    display: flex;
    gap: 1rem;
}

.filter-container select {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 0.5rem;
    font-size: 1rem;
    background-color: var(--white);
    cursor: pointer;
}

/* Tools Grid */
.tools-section {
    margin-top: 2rem;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .search-section {
        padding: 1rem;
    }

    .search-container {
        flex-direction: column;
    }

    .filter-container {
        flex-direction: column;
    }

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

/* 工具页面样式 */
:root {
    --primary-color: #4A90E2;
    --secondary-color: #357ABD;
    --text-color: #333;
    --background-light: #f8f9fa;
    --border-color: #e1e4e8;
    --shadow: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 12px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
}

/* Hero 部分 */
.tools-hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 60px 0;
    color: white;
    text-align: center;
    margin-bottom: 40px;
}

.tools-hero h1 {
    font-size: 2.8em;
    font-weight: 700;
    margin-bottom: 20px;
}

.tools-hero p {
    font-size: 1.2em;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* 分类部分 */
.tools-categories {
    padding: 40px 0;
}

.category-section {
    margin-bottom: 60px;
    position: relative;
}

.category-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.category-header .header-left {
    flex: 1;
}

.category-header h2 {
    font-size: 2em;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.category-header h2 i {
    color: var(--primary-color);
    font-size: 1.2em;
}

.category-header p {
    color: #666;
    font-size: 1.1em;
    margin: 0;
}

.btn-more {
    background: var(--primary-color);
    color: white;
    padding: 8px 20px;
    border-radius: 6px;
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-more:hover {
    background: var(--secondary-color);
    color: white;
}

.btn-more i {
    transition: transform 0.3s ease;
}

.btn-more.expanded i {
    transform: rotate(180deg);
}

/* 工具卡片显示规则 */
.tool-card {
    display: none;
}

.tool-card:nth-child(-n+3) {
    display: block;
}

.category-section.expanded .tool-card {
    display: block;
}

/* 工具卡片样式 */
.tool-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.tool-card:hover::before {
    transform: scaleX(1);
}

.tool-header {
    margin-bottom: 15px;
}

.tool-header h3 {
    font-size: 1.4em;
    margin-bottom: 10px;
}

.tool-header h3 a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.tool-header h3 a:hover {
    color: var(--primary-color);
}

.tool-meta {
    display: flex;
    gap: 15px;
    font-size: 0.9em;
    color: #666;
}

.tool-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.tool-meta i {
    color: #f8c51c;
}

.tool-card p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.tool-features {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.tool-features span {
    background: var(--background-light);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.9em;
    color: var(--text-color);
}

.tool-actions {
    display: flex;
    justify-content: flex-end;
}

.btn-view {
    background: var(--primary-color);
    color: white;
    padding: 8px 20px;
    border-radius: 6px;
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
}

.btn-view:hover {
    background: var(--secondary-color);
    color: white;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .tools-hero {
        padding: 40px 0;
    }

    .tools-hero h1 {
        font-size: 2.2em;
    }

    .category-header h2 {
        font-size: 1.8em;
    }

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

@media (max-width: 480px) {
    .tools-hero h1 {
        font-size: 1.8em;
    }

    .tool-card {
        padding: 20px;
    }

    .tool-features {
        gap: 8px;
    }

    .tool-features span {
        padding: 4px 10px;
        font-size: 0.85em;
    }
}