/* 电路图页面样式 */

/* 面包屑导航 */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 15px;
}

.breadcrumb-link {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s;
}

.breadcrumb-link:hover {
    color: var(--secondary);
    text-decoration: underline;
}

.breadcrumb-separator {
    color: var(--gray-light);
}

.breadcrumb-current {
    color: var(--dark);
    font-weight: 600;
}

/* 页面标题 */
.page-header {
    margin-bottom: 30px;
}

.page-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    margin: 15px 0;
}

.page-icon {
    font-size: 32px;
}

.page-stats {
    display: flex;
    gap: 20px;
    margin-top: 15px;
    font-size: 14px;
    flex-wrap: wrap;
}

.stat-badge {
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    white-space: nowrap;
}

.stat-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.stat-secondary {
    background: #E8F4FF;
    color: var(--primary);
}

/* 分类导航 */
.category-section {
    background: white;
    padding: 25px;
    border-radius: 16px;
    margin-bottom: 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.06);
}

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.category-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    padding-left: 12px;
    border-left: 4px solid var(--primary);
    margin: 0;
}

.category-toggle {
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.3s;
}

.category-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
}

.category-link {
    padding: 12px;
    background: linear-gradient(135deg, #FFF, #F8F9FA);
    border-radius: 8px;
    text-decoration: none;
    color: var(--dark);
    font-size: 14px;
    transition: all 0.3s;
    text-align: center;
    border: 2px solid transparent;
    font-weight: 600;
}

.category-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.category-all {
    display: none;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 2px dashed var(--light);
}

/* 电路图网格 */
.circuit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.circuit-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.06);
    transition: all 0.3s;
    border: 2px solid transparent;
}

.circuit-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.circuit-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.circuit-image {
    height: 200px;
    background: linear-gradient(135deg, #F8F9FA, #ECF0F1);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.circuit-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.3s;
}

.circuit-card:hover .circuit-image img {
    transform: scale(1.05);
}

.circuit-info {
    padding: 20px;
}

.circuit-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 12px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 45px;
}

.circuit-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--gray);
}

.circuit-action {
    color: var(--primary);
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-title {
        font-size: 24px;
    }
    
    .page-icon {
        font-size: 28px;
    }
    
    .page-stats {
        gap: 10px;
    }
    
    .stat-badge {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .category-section {
        padding: 20px 15px;
    }
    
    .category-title {
        font-size: 16px;
    }
    
    .category-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 10px;
    }
    
    .category-link {
        padding: 10px;
        font-size: 13px;
    }
    
    .circuit-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 15px;
    }
    
    .circuit-image {
        height: 160px;
    }
    
    .circuit-info {
        padding: 15px;
    }
    
    .circuit-title {
        font-size: 14px;
        min-height: 40px;
    }
}

@media (max-width: 480px) {
    .breadcrumb {
        font-size: 12px;
        flex-wrap: wrap;
    }
    
    .page-title {
        font-size: 20px;
        gap: 8px;
    }
    
    .page-icon {
        font-size: 24px;
    }
    
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .circuit-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}