/* 全局样式变量 */
:root {
  --color-primary: #1a1a1a;
  --color-secondary: #666666;
  --color-accent: #8b7355;
  --color-background: #fafafa;
  --color-surface: #ffffff;
  --color-text: #333333;
  --color-text-light: #999999;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --border-radius: 4px;
  --transition: all 0.3s ease;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  overflow-x: hidden;
}

/* 页面过渡动画 */
.page-transition {
  animation: fadeIn 0.6s ease-out;
}

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

/* 导航栏样式 */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: var(--color-surface);
  box-shadow: var(--shadow);
  z-index: 1000;
  transition: var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
}

.nav-logo {
  font-size: 1.2rem;
  font-weight: 300;
  letter-spacing: 2px;
  color: var(--color-primary);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--color-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 1px;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* 主内容区域 */
.main-content {
  margin-top: 60px;
  min-height: calc(100vh - 120px);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* 轮播图样式 */
.carousel {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.carousel-slide {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.carousel-slide.active {
  opacity: 1;
}

.carousel-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-caption {
  position: absolute;
  bottom: 10%;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--color-surface);
  z-index: 2;
}

.carousel-caption h2 {
  font-size: 3rem;
  font-weight: 300;
  letter-spacing: 3px;
  margin-bottom: var(--spacing-sm);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.carousel-caption p {
  font-size: 1.2rem;
  font-weight: 300;
  letter-spacing: 1px;
  opacity: 0.9;
}

.carousel-indicators {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-xs);
  z-index: 2;
}

.indicator {
  width: 40px;
  height: 2px;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: var(--transition);
}

.indicator.active {
  background: var(--color-surface);
  width: 60px;
}

/* 瀑布流布局 */
.masonry-grid {
  columns: 3;
  column-gap: var(--spacing-sm);
  padding: var(--spacing-md) 0;
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: var(--spacing-sm);
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius);
}

.masonry-image {
  width: 100%;
  height: auto;
  display: block;
  transition: var(--transition);
}

.masonry-item:hover .masonry-image {
  transform: scale(1.05);
}

.masonry-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  color: var(--color-surface);
  padding: var(--spacing-md);
  transform: translateY(100%);
  transition: var(--transition);
}

.masonry-item:hover .masonry-caption {
  transform: translateY(0);
}

.masonry-caption h3 {
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-xs);
}

.masonry-caption p {
  font-size: 0.85rem;
  opacity: 0.9;
  line-height: 1.4;
}

/* 图文混排样式 */
.content-section {
  padding: var(--spacing-xl) 0;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.content-text h2 {
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 2px;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.content-text h3 {
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.content-text p {
  color: var(--color-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
}

.content-image {
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

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

.content-image:hover img {
  transform: scale(1.03);
}

/* 面料展示样式 */
.material-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  padding: var(--spacing-md) 0;
}

.material-card {
  background: var(--color-surface);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.material-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.material-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.material-info {
  padding: var(--spacing-md);
}

.material-info h3 {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  letter-spacing: 1px;
}

.material-info p {
  color: var(--color-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* 页脚样式 */
.footer {
  background: var(--color-primary);
  color: var(--color-surface);
  text-align: center;
  padding: var(--spacing-md);
  font-size: 0.9rem;
  letter-spacing: 1px;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-menu {
    gap: var(--spacing-md);
  }
  
  .nav-link {
    font-size: 0.85rem;
  }
  
  .carousel-caption h2 {
    font-size: 2rem;
  }
  
  .carousel-caption p {
    font-size: 1rem;
  }
  
  .masonry-grid {
    columns: 2;
  }
  
  .content-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .material-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .nav-menu {
    gap: var(--spacing-sm);
  }
  
  .masonry-grid {
    columns: 1;
  }
  
  .carousel-caption h2 {
    font-size: 1.5rem;
  }
  
  .carousel-caption p {
    font-size: 0.9rem;
  }
}

/* 加载动画 */
.loading {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-background);
}

::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}