/* 全局字体与基础样式 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@200;300;400&display=swap');

:root {
  --primary-black: #000000;
  --primary-white: #ffffff;
  --medium-gray: #666666;
  --light-gray: #f5f5f5;
  --dark-gray: #1a1a1a;
  --footer-bg: #2a2a2a;
  --footer-text: #999999;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Noto Serif SC', serif;
  font-weight: 300;
  color: var(--primary-black);
  background-color: var(--primary-white);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 导航栏样式 */
.nav-container {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: var(--transition);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-item {
  position: relative;
  cursor: pointer;
  transition: var(--transition);
}

.nav-item::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 1px;
  background: var(--primary-black);
  transition: var(--transition);
  transform: translateX(-50%);
}

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

/* 轮播图样式 */
.hero-carousel {
  position: relative;
  width: 100%;
  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-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.4) 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: var(--primary-white);
  text-align: center;
}

/* 网格布局样式 */
.collections-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  padding: 4rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.collection-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  background: var(--light-gray);
}

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

.collection-card img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: var(--transition);
}

.collection-card:hover img {
  transform: scale(1.05);
}

/* 瀑布流布局 */
.waterfall-container {
  column-count: 3;
  column-gap: 1rem;
  padding: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.waterfall-item {
  break-inside: avoid;
  margin-bottom: 1rem;
  position: relative;
  overflow: hidden;
  background: var(--light-gray);
}

.waterfall-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: var(--transition);
}

.waterfall-item:hover img {
  transform: scale(1.03);
}

.waterfall-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 100%);
  color: var(--primary-white);
  padding: 2rem 1rem 1rem;
  font-size: 0.9rem;
  line-height: 1.4;
  opacity: 0;
  transition: var(--transition);
}

.waterfall-item:hover .waterfall-caption {
  opacity: 1;
}

/* 灵感页面样式 */
.inspiration-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.inspiration-card {
  text-align: center;
}

.inspiration-card img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  margin-bottom: 1.5rem;
}

.inspiration-title {
  font-size: 1.2rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
  color: var(--dark-gray);
}

/* 关于页面样式 */
.about-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 6rem 2rem;
  text-align: center;
}

.about-title {
  font-size: 2.5rem;
  font-weight: 200;
  letter-spacing: 0.2em;
  margin-bottom: 3rem;
  color: var(--dark-gray);
}

.about-text {
  font-size: 1.1rem;
  line-height: 2;
  color: var(--medium-gray);
  letter-spacing: 0.05em;
}

/* 页脚样式 */
footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  text-align: center;
  padding: 2rem;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .waterfall-container {
    column-count: 2;
  }
  
  .collections-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 2rem 1rem;
  }
  
  .inspiration-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2rem 1rem;
  }
  
  .about-container {
    padding: 4rem 1.5rem;
  }
  
  .about-title {
    font-size: 2rem;
  }
  
  .about-text {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .waterfall-container {
    column-count: 1;
  }
  
  .collection-card img,
  .inspiration-card img {
    height: 300px;
  }
}

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

.fade-in {
  animation: fadeIn 1s ease-out forwards;
}

/* 按钮样式 */
.explore-btn {
  display: inline-block;
  padding: 1rem 3rem;
  border: 1px solid var(--primary-white);
  color: var(--primary-white);
  text-decoration: none;
  letter-spacing: 0.1em;
  transition: var(--transition);
  font-weight: 300;
  margin-top: 2rem;
}

.explore-btn:hover {
  background: var(--primary-white);
  color: var(--primary-black);
  transform: translateY(-2px);
}