/* 全局平滑滚动与字体优化 */
html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 工具类：隐藏滚动条但允许滚动 (用于横向滑动区域) */
.no-scrollbar::-webkit-scrollbar {
  display: none;
}
.no-scrollbar {
  -ms-overflow-style: none; /* IE and Edge */
  scrollbar-width: none; /* Firefox */
}

/* 动画关键帧定义 */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { 
    opacity: 0;
    transform: translateY(30px);
  }
  to { 
    opacity: 1;
    transform: translateY(0);
  }
}

/* 动画实用类 */
.animate-fade-in {
  animation: fadeIn 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.animate-slide-up {
  opacity: 0; /* 初始隐藏，等待动画执行 */
  animation: slideUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* 动画延迟工具类 */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-500 { animation-delay: 500ms; }

/* 交互：图片悬停微缩放效果 */
.group:hover .img-zoom {
  transform: scale(1.05);
}
.img-zoom {
  transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

/* 导航链接底部跟随动画 */
.nav-link {
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: -4px;
  left: 0;
  background-color: currentColor;
  transition: width 0.3s ease;
}
.nav-link:hover::after {
  width: 100%;
}

/* 移动端菜单折叠过渡 */
.mobile-menu {
  transition: max-height 0.4s ease-in-out, opacity 0.3s ease-in-out;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
}
.mobile-menu.open {
  max-height: 24rem;
  opacity: 1;
}

/* 文本截断 */
.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 动态内容槽位标识 (保持结构灵活性) */
[data-slot="content"] {
  display: contents;
}