/* 全局样式定义 - 时尚男装网站 */

/* 字体导入 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

/* CSS变量定义 - 设计令牌 */
:root {
  /* 色彩方案 */
  --primary-gray: #6B7280;     /* 高级灰 - 70% */
  --matte-black: #1F2937;     /* 哑光黑 - 20% */
  --cement-gray: #9CA3AF;      /* 水泥灰 - 10% */
  --light-gray: #F9FAFB;       /* 浅灰背景 */
  --dark-gray: #111827;        /* 深灰文字 */
  
  /* 间距系统 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* 字体系统 */
  --font-primary: 'Noto Sans SC', 'Helvetica Neue', sans-serif;
  
  /* 动画时长 */
  --transition-fast: 0.3s;
  --transition-normal: 0.5s;
}

/* 全局基础样式 */
body {
  font-family: var(--font-primary);
  color: var(--dark-gray);
  background-color: var(--light-gray);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 页面过渡动画 */
.page-transition {
  animation: fadeIn var(--transition-normal) ease-in-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 轮播图容器 */
.carousel-container {
  position: relative;
  overflow: hidden;
}

.carousel-slide {
  transition: opacity var(--transition-normal) ease-in-out;
}

/* 图片悬停效果 */
.image-hover {
  position: relative;
  overflow: hidden;
}

.image-hover::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.15);
  opacity: 0;
  transition: opacity var(--transition-fast) ease;
}

.image-hover:hover::after {
  opacity: 1;
}

.image-hover .hover-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 1.125rem;
  opacity: 0;
  transition: opacity var(--transition-fast) ease;
  pointer-events: none;
  z-index: 10;
}

.image-hover:hover .hover-text {
  opacity: 1;
}

/* 瀑布流布局 */
.masonry-grid {
  column-count: 3;
  column-gap: var(--spacing-sm);
}

@media (max-width: 1024px) {
  .masonry-grid {
    column-count: 2;
  }
}

@media (max-width: 640px) {
  .masonry-grid {
    column-count: 1;
  }
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: var(--spacing-sm);
}

/* 横向滚动容器 */
.horizontal-scroll {
  display: flex;
  overflow-x: auto;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  gap: var(--spacing-lg);
  padding: var(--spacing-sm) 0;
}

.horizontal-scroll::-webkit-scrollbar {
  height: 6px;
}

.horizontal-scroll::-webkit-scrollbar-track {
  background: var(--cement-gray);
  opacity: 0.3;
}

.horizontal-scroll::-webkit-scrollbar-thumb {
  background: var(--matte-black);
  border-radius: 3px;
}

/* 手风琴菜单 */
.accordion-item {
  border-bottom: 1px solid var(--cement-gray);
}

.accordion-header {
  cursor: pointer;
  padding: var(--spacing-md) 0;
  transition: color var(--transition-fast) ease;
}

.accordion-header:hover {
  color: var(--primary-gray);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal) ease;
}

.accordion-content.active {
  max-height: 1000px;
}

/* 时间轴样式 */
.timeline {
  position: relative;
  padding: var(--spacing-lg) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--cement-gray);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-xl);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 20px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--matte-black);
  transform: translateX(-50%);
}

/* 导航栏固定样式 */
.navbar-fixed {
  backdrop-filter: blur(10px);
  background: rgba(31, 41, 55, 0.95);
}

/* 动态文字条 */
.text-marquee {
  animation: marquee 20s linear infinite;
}

@keyframes marquee {
  0% {
    transform: translateX(100%);
  }
  100% {
    transform: translateX(-100%);
  }
}

/* 加载动画 */
.loading-skeleton {
  background: linear-gradient(90deg, var(--cement-gray) 25%, var(--primary-gray) 50%, var(--cement-gray) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* 响应式字体大小 */
@media (max-width: 768px) {
  body {
    font-size: 14px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  body {
    font-size: 15px;
  }
}

@media (min-width: 1025px) {
  body {
    font-size: 16px;
  }
}

/* 滚动行为优化 */
html {
  scroll-behavior: smooth;
}

/* 选择文本样式 */
::selection {
  background: var(--primary-gray);
  color: white;
}

/* 焦点状态 */
.focus-visible {
  outline: 2px solid var(--primary-gray);
  outline-offset: 2px;
}