/* 全局样式定义 - 风尚秘境 */

/* 设计令牌 */
:root {
  --primary-color: #fafafa;
  --secondary-color: #f5f5f5;
  --accent-color: #333;
  --text-color: #1a1a1a;
  --subtle-text: #666;
  --hover-color: #8b7355;
  --border-color: #e0e0e0;
  --shadow-light: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-medium: 0 4px 16px rgba(0,0,0,0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 字体系统 */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background: var(--primary-color);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 容器布局 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(250, 250, 250, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

.navbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--text-color);
  text-decoration: none;
  transition: var(--transition);
}

.navbar-brand:hover {
  color: var(--hover-color);
}

.navbar-menu {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

.navbar-menu a {
  color: var(--text-color);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  transition: var(--transition);
  position: relative;
}

.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--hover-color);
  transition: width 0.3s ease;
}

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

/* 主视觉区域 */
.hero-section {
  margin-top: 80px;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.hero-section:hover .hero-image {
  transform: scale(1.05);
}

.hero-content {
  position: absolute;
  text-align: center;
  color: white;
  z-index: 2;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 200;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
  font-size: 1.2rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  opacity: 0.9;
}

/* 网格布局 */
.grid-section {
  padding: 5rem 0;
}

.grid-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  margin-bottom: 3rem;
  color: var(--text-color);
}

.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.grid-item {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  box-shadow: var(--shadow-light);
  transition: var(--transition);
  cursor: pointer;
}

.grid-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

.grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.grid-item:hover img {
  transform: scale(1.1);
}

.grid-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  padding: 2rem 1.5rem 1.5rem;
  color: white;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.grid-item:hover .grid-overlay {
  transform: translateY(0);
}

.grid-overlay h3 {
  font-size: 1.1rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.grid-overlay p {
  font-size: 0.9rem;
  opacity: 0.9;
  font-weight: 300;
}

/* 分类区域 */
.category-section {
  padding: 4rem 0;
  background: var(--secondary-color);
}

.category-header {
  text-align: center;
  margin-bottom: 4rem;
}

.category-title {
  font-size: 2.5rem;
  font-weight: 200;
  letter-spacing: 0.1em;
  color: var(--text-color);
  margin-bottom: 1rem;
}

.category-description {
  font-size: 1.1rem;
  color: var(--subtle-text);
  font-weight: 300;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

/* 叙事区域 */
.story-section {
  padding: 5rem 0;
}

.story-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-bottom: 5rem;
}

.story-item:nth-child(even) {
  direction: rtl;
}

.story-item:nth-child(even) > * {
  direction: ltr;
}

.story-image {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: var(--shadow-medium);
}

.story-content h3 {
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  margin-bottom: 1.5rem;
  color: var(--text-color);
}

.story-content p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--subtle-text);
  font-weight: 300;
}

/* 关于页面 */
.about-section {
  padding: 6rem 0;
  text-align: center;
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-title {
  font-size: 3rem;
  font-weight: 200;
  letter-spacing: 0.1em;
  margin-bottom: 3rem;
  color: var(--text-color);
}

.about-text {
  font-size: 1.2rem;
  line-height: 2;
  color: var(--subtle-text);
  font-weight: 300;
  text-align: justify;
}

/* 页脚 */
.footer {
  background: var(--primary-color);
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  text-align: center;
}

.footer-text {
  color: var(--subtle-text);
  font-size: 0.9rem;
  font-weight: 300;
  letter-spacing: 0.05em;
}

/* 返回顶部按钮 */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--text-color);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--hover-color);
  transform: translateY(-2px);
}

/* 图片懒加载动画 */
.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) {
  .navbar-menu {
    flex-direction: column;
    gap: 1rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .story-item {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .story-item:nth-child(even) {
    direction: ltr;
  }
  
  .story-image {
    height: 300px;
  }
  
  .category-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .grid-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .navbar-content {
    flex-direction: column;
    gap: 1rem;
  }
}