.select-category-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.category-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: block;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
    border-color: var(--primary);
    text-decoration: none;
}

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

.category-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    position: relative;
}

.category-name {
    font-size: 1.25rem;
    font-weight: 700;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.category-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.6;
    margin-bottom: 1rem;
    min-height: 3rem;
}


.page-header {
    text-align: center;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--glass-border);
}

.page-header h1 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin: 0;
}

.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius-lg);
    margin-top: 2rem;
}

.empty-state i {
    font-size: 3rem;
    color: var(--text-secondary);
    opacity: 0.3;
    margin-bottom: 1rem;
}

.empty-state h3 {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.empty-state p {
    color: var(--text-secondary);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .select-category-container {
        padding: 1rem 0.75rem;
    }
    
    .page-header {
        margin-bottom: 1.5rem;
        padding-bottom: 1rem;
    }
    
    .page-header h1 {
        font-size: 1.125rem;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .category-card {
        padding: 1.5rem;
    }
}