/* 
 * 图片占位符样式
 * 用于临时展示图片，带提示信息
 */

/* 图片容器 */
.image-placeholder {
  position: relative;
  display: inline-block;
  overflow: hidden;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: var(--radius-lg);
}

.image-placeholder img {
  width: 100%;
  height: auto;
  display: block;
  transition: filter var(--transition-normal);
}

/* 鼠标悬停时的遮罩层 */
.image-placeholder::after {
  content: '图片来源于互联网，临时展示，稍后替换';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  text-align: center;
  font-size: 0.875rem;
  font-weight: 500;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  backdrop-filter: blur(4px);
}

.image-placeholder:hover::after {
  opacity: 1;
  visibility: visible;
}

/* 图片加载中的状态 */
.image-placeholder.loading img {
  filter: blur(10px);
}

/* 图片容器变体 - 渐变背景 */
.image-placeholder.gradient-blue {
  background: linear-gradient(135deg, #1D4ED8, #06B6D4);
}

.image-placeholder.gradient-green {
  background: linear-gradient(135deg, #10B981, #059669);
}

.image-placeholder.gradient-orange {
  background: linear-gradient(135deg, #F59E0B, #D97706);
}

.image-placeholder.gradient-purple {
  background: linear-gradient(135deg, #8B5CF6, #6D28D9);
}

.image-placeholder.gradient-pink {
  background: linear-gradient(135deg, #EC4899, #DB2777);
}

/* 带图标的占位符 */
.image-placeholder.with-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}

.image-placeholder.with-icon::before {
  content: attr(data-icon);
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.8;
}

/* 响应式图片容器 */
.responsive-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

/* 图片画廊 */
.image-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.image-gallery .image-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
}

/* 产品图片展示区 */
.product-showcase {
  position: relative;
  background: var(--bg-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  overflow: hidden;
}

.product-showcase-image {
  position: relative;
  z-index: 1;
}

/* 特性图标 */
.feature-icon-large {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin: 0 auto var(--spacing-md);
}