/* 全局变量定义 */
:root {
  --color-pearl-white: #FFFFFF;
  --color-high-gray: #F8F9FA;
  --color-midnight-black: #1A1A1A;
  --color-sand: #E6DACE;
  --color-terracotta: #B76E79;
  --color-haze-blue: #9BB7D4;
  --color-copper: #B08D57;
  --transition-smooth: 0.3s ease;
}

/* 字体导入 */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@300;400;500;600&display=swap');

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--color-high-gray);
  color: var(--color-midnight-black);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 标题字体 */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Noto Serif SC', serif;
  font-weight: 500;
  letter-spacing: 0.5px;
}

.en-title {
  font-family: 'Playfair Display', serif;
}

/* 导航栏 */
.nav-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 1.5rem 2rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

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

.nav-menu a {
  text-decoration: none;
  color: var(--color-midnight-black);
  font-size: 1rem;
  font-weight: 400;
  position: relative;
  transition: color var(--transition-smooth);
}

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

.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-copper);
}

/* 轮播容器 */
.carousel-container {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  margin-top: 70px;
}

.carousel-slide {
  position: absolute;
  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;
  object-position: center;
}

.carousel-dots {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 1rem;
  z-index: 10;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: background var(--transition-smooth);
}

.dot.active {
  background: var(--color-pearl-white);
}

/* 网格布局 */
.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  padding: 3rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.grid-item {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  border-radius: 2px;
  cursor: pointer;
}

.grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

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

.grid-overlay {
  position: absolute;
  inset: 0;
  background: rgba(26, 26, 26, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-smooth);
  padding: 2rem;
}

.grid-item:hover .grid-overlay {
  opacity: 1;
}

.grid-text {
  color: var(--color-pearl-white);
  text-align: center;
  font-size: 1.1rem;
  line-height: 1.8;
}

/* 视差滚动区块 */
.parallax-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  background: var(--color-midnight-black);
  color: var(--color-pearl-white);
}

.parallax-title {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  text-align: center;
}

.parallax-content {
  max-width: 1200px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.parallax-item {
  text-align: center;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.parallax-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.parallax-item img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  margin-bottom: 1.5rem;
  border-radius: 2px;
}

.parallax-item p {
  font-size: 0.95rem;
  font-weight: 300;
  letter-spacing: 0.5px;
  line-height: 1.8;
}

/* 风格档案分类 */
.style-section {
  padding: 4rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.style-title {
  font-size: 2rem;
  margin-bottom: 2rem;
  text-align: center;
  color: var(--color-midnight-black);
}

.style-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  margin-bottom: 4rem;
}

.style-card {
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}

.style-card img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.style-card:hover img {
  transform: scale(1.02);
}

.style-description {
  margin-top: 1rem;
  font-size: 0.95rem;
  color: var(--color-midnight-black);
  line-height: 1.8;
  text-align: center;
}

/* 页脚 */
.footer {
  text-align: center;
  padding: 2rem;
  background: var(--color-pearl-white);
  color: var(--color-midnight-black);
  font-size: 0.85rem;
  margin-top: 4rem;
}

/* 加载动画 */
.loading-placeholder {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-menu {
    gap: 1.5rem;
    font-size: 0.9rem;
  }

  .grid-container {
    grid-template-columns: 1fr;
    padding: 2rem 1rem;
  }

  .parallax-title {
    font-size: 2rem;
  }

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

  .carousel-container {
    margin-top: 60px;
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 1rem;
  }

  .nav-menu {
    gap: 1rem;
    font-size: 0.85rem;
  }

  .parallax-title {
    font-size: 1.5rem;
  }
}