/* =====================================================
   简化卡片系统 - 参考下载页设计
   简洁 | 高性能 | 清爽医疗风格
   版本: v4.0 Simplified Cards
   ===================================================== */

/* ===== 简化色彩系统 ===== */
:root {
  /* 主色调 - 清爽医疗蓝紫 */
  --color-primary: #6366f1;
  --color-primary-light: #818cf8;
  --color-primary-dark: #4f46e5;
  
  /* 辅色调 */
  --color-accent: #8b5cf6;
  --color-blue: #3b82f6;
  --color-green: #22c55e;
  --color-orange: #fb923c;
  
  /* 玻璃效果 */
  --glass-bg: rgba(255, 255, 255, 0.9);
  --glass-border: rgba(99, 102, 241, 0.12);
  --glass-border-hover: rgba(99, 102, 241, 0.25);
}

/* ===== 基础卡片容器 ===== */
.premium-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: var(--spacing-xl, 1.5rem);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

/* ===== 卡片内容样式 ===== */
.premium-card-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 1rem;
  padding: 12px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.premium-card-icon img,
.premium-card-icon svg {
  width: 100%;
  height: 100%;
  object-fit: contain;
  color: var(--color-primary);
}

.premium-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary, #0f172a);
  margin-bottom: 0.5rem;
}

.premium-card-description {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text-secondary, #475569);
}

/* ===== 网格布局 ===== */
.premium-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .premium-cards-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  
  .premium-card {
    padding: 1rem;
  }
  
  .premium-card-icon {
    width: 48px;
    height: 48px;
  }
}