/* 全局样式变量 */
:root {
  --background-color: #fafafa;
  --text-color: #333;
  --primary-color: #000;
  --secondary-color: #666;
  --border-color: #e5e5e5;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  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: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

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

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

.nav-logo {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--primary-color);
  text-decoration: none;
}

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

.nav-link {
  color: var(--text-color);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  transition: var(--transition);
  position: relative;
}

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

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

/* 主容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* 英雄区域 */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  z-index: 0;
}

.hero-content {
  text-align: center;
  color: white;
  z-index: 1;
  padding: var(--spacing-md);
}

.hero-title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 200;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-sm);
  animation: fadeInUp 1s ease;
}

.hero-subtitle {
  font-size: 1.1rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  opacity: 0.9;
  animation: fadeInUp 1s ease 0.2s backwards;
}

/* 系列预览 */
.series-preview {
  padding: var(--spacing-lg) 0;
}

.series-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.series-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.series-card:hover {
  transform: translateY(-5px);
}

.series-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: var(--transition);
}

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

.series-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  padding: var(--spacing-md);
  color: white;
}

.series-title {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.05em;
}

/* 产品网格 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
  padding: var(--spacing-lg) 0;
}

.product-card {
  background: white;
  overflow: hidden;
  transition: var(--transition);
}

.product-card:hover {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.product-image {
  width: 100%;
  height: 350px;
  object-fit: cover;
}

product-info {
  padding: var(--spacing-sm);
}

product-title {
  font-size: 1.1rem;
  font-weight: 300;
  margin-bottom: var(--spacing-xs);
  color: var(--text-color);
}

product-description {
  font-size: 0.9rem;
  color: var(--secondary-color);
  line-height: 1.6;
}

/* 灵感故事页面 */
.story-container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-sm);
}

.story-image {
  width: 100%;
  height: 500px;
  object-fit: cover;
  margin-bottom: var(--spacing-md);
}

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

.story-content p {
  margin-bottom: var(--spacing-sm);
}

/* 页脚 */
footer {
  text-align: center;
  padding: var(--spacing-md) 0;
  color: var(--secondary-color);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

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

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  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: var(--spacing-sm);
  }
  
  .nav-link {
    font-size: 0.8rem;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .series-grid {
    grid-template-columns: 1fr;
  }
  
  .products-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0 var(--spacing-xs);
  }
  
  .hero-content {
    padding: var(--spacing-sm);
  }
  
  .container {
    padding: 0 var(--spacing-xs);
  }
}

/* 加载动画 */
.loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: white;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s ease;
}

.loading.hide {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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