/* Google Fonts - 中文字体 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&family=Noto+Serif+SC:wght@400;600&display=swap');

/* CSS变量定义 */
:root {
  --primary-bg: #F8F6F3;
  --secondary-bg: #FFFFFF;
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-light: #999999;
  --border-color: #E5E5E5;
  --accent-color: #D4A574;
  --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.12);
  --transition-base: all 0.3s ease;
  --max-width: 1200px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--primary-bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 通用容器 */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* 导航栏样式 */
.navbar {
  background-color: var(--secondary-bg);
  box-shadow: var(--shadow-light);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition-base);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
}

.navbar-brand {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
}

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

.navbar-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 400;
  transition: var(--transition-base);
  position: relative;
}

.navbar-link:hover,
.navbar-link.active {
  color: var(--accent-color);
}

.navbar-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-color);
  transition: width 0.3s ease;
}

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

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-base);
}

/* 首页轮播图 */
.hero-carousel {
  position: relative;
  height: 70vh;
  min-height: 400px;
  overflow: hidden;
  margin-bottom: var(--spacing-xl);
}

.carousel-container {
  position: relative;
  width: 100%;
  height: 100%;
}

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

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

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

.carousel-indicators {
  position: absolute;
  bottom: var(--spacing-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-sm);
  z-index: 10;
}

.indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: var(--transition-base);
}

.indicator.active {
  background-color: var(--secondary-bg);
  transform: scale(1.2);
}

/* 主要内容区域 */
.main-content {
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.hero-title {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.8;
}

/* 画廊页面 */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  padding: var(--spacing-lg) 0;
}

.gallery-item {
  background-color: var(--secondary-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-light);
  transition: var(--transition-base);
  cursor: pointer;
}

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

.gallery-item img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.gallery-caption {
  padding: var(--spacing-md);
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-style: italic;
}

/* 系法艺术页面 */
.styles-container {
  padding: var(--spacing-xl) 0;
}

.style-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  background-color: var(--secondary-bg);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-light);
  transition: var(--transition-base);
}

.style-card:hover {
  box-shadow: var(--shadow-medium);
}

.style-card:nth-child(even) {
  direction: rtl;
}

.style-card:nth-child(even) > * {
  direction: ltr;
}

.style-image {
  position: relative;
  overflow: hidden;
}

.style-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background-color: rgba(212, 165, 116, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-base);
}

.play-button:hover {
  background-color: var(--accent-color);
  transform: translate(-50%, -50%) scale(1.1);
}

.play-button::after {
  content: '▶';
  color: white;
  font-size: 1.25rem;
  margin-left: 4px;
}

.style-content {
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.style-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.style-description {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.style-tag {
  display: inline-block;
  padding: 4px 12px;
  background-color: var(--primary-bg);
  color: var(--accent-color);
  border-radius: 16px;
  font-size: 0.875rem;
}

/* 材质故事页面 */
.materials-container {
  padding: var(--spacing-xl) 0;
}

.material-section {
  margin-bottom: var(--spacing-xl);
  background-color: var(--secondary-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-light);
}

.material-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: center;
}

.material-image {
  height: 500px;
  overflow: hidden;
}

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

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

.material-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.material-description {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 1.125rem;
}

.material-section:nth-child(even) .material-content {
  direction: rtl;
}

.material-section:nth-child(even) .material-info {
  direction: ltr;
}

/* 页脚 */
.footer {
  background-color: var(--text-primary);
  color: var(--secondary-bg);
  text-align: center;
  padding: var(--spacing-md) 0;
  font-size: 0.875rem;
}

/* 动画效果 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .navbar-menu {
    position: fixed;
    top: 60px;
    right: -100%;
    width: 100%;
    height: calc(100vh - 60px);
    background-color: var(--secondary-bg);
    flex-direction: column;
    padding: var(--spacing-lg);
    transition: right 0.3s ease;
    box-shadow: var(--shadow-medium);
  }

  .navbar-menu.active {
    right: 0;
  }

  .hamburger {
    display: flex;
  }

  .hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }

  .hero-carousel {
    height: 50vh;
    min-height: 300px;
  }

  .style-card,
  .material-content {
    grid-template-columns: 1fr;
  }

  .style-image img,
  .material-image img {
    height: 300px;
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-sm);
  }

  .material-section:nth-child(even) .material-content {
    direction: ltr;
  }

  .style-card:nth-child(even) {
    direction: ltr;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .main-content {
    padding: var(--spacing-lg) 0;
  }

  .style-content,
  .material-info {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .style-title,
  .material-title {
    font-size: 1.5rem;
  }
}

/* 加载状态 */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* 通用按钮样式 */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--accent-color);
  color: white;
  text-decoration: none;
  border-radius: 4px;
  transition: var(--transition-base);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn:hover {
  background-color: #B8935F;
  transform: translateY(-2px);
}