/* 图片占位符样式 */
.product-placeholder,
.solution-placeholder,
.case-placeholder,
.article-placeholder {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border: 2px dashed #dee2e6;
    border-radius: 10px;
    min-height: 200px;
    transition: all 0.3s ease;
}

.product-placeholder:hover,
.solution-placeholder:hover,
.case-placeholder:hover,
.article-placeholder:hover {
    background: linear-gradient(135deg, #e9ecef, #dee2e6);
    border-color: #3498db;
    transform: translateY(-2px);
}

.placeholder-icon {
    font-size: 48px;
    margin-bottom: 15px;
    opacity: 0.7;
}

.placeholder-text {
    font-size: 16px;
    font-weight: 600;
    color: #6c757d;
    text-align: center;
    line-height: 1.4;
}

/* 特定尺寸的占位符 */
.placeholder-large {
    min-height: 300px;
}

.placeholder-medium {
    min-height: 200px;
}

.placeholder-small {
    min-height: 150px;
}

.placeholder-icon.large {
    font-size: 64px;
}

.placeholder-icon.small {
    font-size: 32px;
}

/* 不同类型的占位符颜色 */
.product-placeholder {
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
}

.solution-placeholder {
    background: linear-gradient(135deg, #e8f5e8, #c8e6c9);
}

.case-placeholder {
    background: linear-gradient(135deg, #fff3e0, #ffcc02);
}

.article-placeholder {
    background: linear-gradient(135deg, #f3e5f5, #e1bee7);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .placeholder-icon {
        font-size: 36px;
    }
    
    .placeholder-text {
        font-size: 14px;
    }
    
    .product-placeholder,
    .solution-placeholder,
    .case-placeholder,
    .article-placeholder {
        min-height: 150px;
    }
}