/* 全局样式 - 时尚男装展示网站 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
  --primary-black: #1a1a1a;
  --primary-white: #ffffff;
  --medium-gray: #808080;
  --light-gray: #f5f5f5;
  --dark-gray: #333333;
  --accent-dark-blue: #1e3a5f;
  --accent-dark-green: #2d4a3d;
  --font-chinese: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-english: 'Helvetica', 'Arial', sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-chinese), var(--font-english);
  background-color: var(--primary-white);
  color: var(--primary-black);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 0;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--primary-black);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 3rem;
}

.nav-menu a {
  color: var(--dark-gray);
  text-decoration: none;
  font-weight: 400;
  font-size: 0.95rem;
  transition: color 0.3s ease;
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--primary-black);
  transition: width 0.3s ease;
}

.nav-menu a:hover {
  color: var(--primary-black);
}

.nav-menu a:hover::after {
  width: 100%;
}

/* 主容器 */
.main-container {
  margin-top: 80px;
  min-height: calc(100vh - 80px);
}

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

.carousel-slide {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

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

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

.hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--primary-white);
  z-index: 2;
}

.hero-title {
  font-size: 4rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: 3px;
  animation: fadeInUp 1s ease;
}

.hero-subtitle {
  font-size: 1.2rem;
  font-weight: 300;
  letter-spacing: 1px;
  animation: fadeInUp 1s ease 0.3s both;
}

/* 导航图标区域 */
.icon-nav-section {
  padding: 5rem 2rem;
  background-color: var(--light-gray);
}

.icon-nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.icon-nav-item {
  text-align: center;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.icon-nav-item:hover {
  transform: translateY(-10px);
}

.icon-nav-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background-color: var(--primary-black);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease;
}

.icon-nav-item:hover .icon-nav-icon {
  background-color: var(--accent-dark-blue);
}

.icon-nav-title {
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--primary-black);
}

.icon-nav-desc {
  font-size: 0.9rem;
  color: var(--medium-gray);
}

/* 卡片布局样式 */
.cards-section {
  padding: 5rem 2rem;
}

.cards-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
}

.style-card {
  background-color: var(--primary-white);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.style-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.card-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.style-card:hover .card-image {
  transform: scale(1.05);
}

.card-content {
  padding: 2rem;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 1rem;
  color: var(--primary-black);
}

.card-description {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--dark-gray);
}

/* 瀑布流布局 */
.masonry-container {
  max-width: 1200px;
  margin: 0 auto;
  columns: 3;
  column-gap: 2rem;
  padding: 2rem;
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 2rem;
}

.masonry-item img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  transition: transform 0.3s ease;
}

.masonry-item:hover img {
  transform: scale(1.02);
}

.masonry-content {
  padding: 1.5rem;
  background-color: var(--primary-white);
}

/* 文章列表样式 */
.articles-section {
  padding: 5rem 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.article-item {
  padding: 3rem 0;
  border-bottom: 1px solid var(--light-gray);
  cursor: pointer;
  transition: opacity 0.3s ease;
}

.article-item:hover {
  opacity: 0.8;
}

.article-item:last-child {
  border-bottom: none;
}

.article-title {
  font-size: 2rem;
  font-weight: 500;
  margin-bottom: 1rem;
  color: var(--primary-black);
}

.article-excerpt {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--dark-gray);
}

/* 关于页面样式 */
.about-section {
  padding: 5rem 2rem;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.about-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
  margin-bottom: 3rem;
  border-radius: 8px;
}

.about-content {
  font-size: 1.1rem;
  line-height: 2;
  color: var(--dark-gray);
}

.about-content p {
  margin-bottom: 2rem;
}

/* 页脚样式 */
footer {
  background-color: var(--primary-black);
  color: var(--primary-white);
  text-align: center;
  padding: 2rem;
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-menu {
    gap: 1.5rem;
    font-size: 0.9rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .cards-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .masonry-container {
    columns: 2;
    column-gap: 1rem;
    padding: 1rem;
  }
  
  .article-title {
    font-size: 1.5rem;
  }
  
  .about-content {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .nav-menu {
    display: none;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .masonry-container {
    columns: 1;
  }
  
  .icon-nav-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* 加载动画 */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--light-gray);
  border-radius: 50%;
  border-top-color: var(--primary-black);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* 图片懒加载淡入效果 */
.lazy-load {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lazy-load.loaded {
  opacity: 1;
}