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

:root {
  --color-cream: #F5F1E8;
  --color-oat: #E8DCC4;
  --color-stone: #9D9D9D;
  --color-deep-blue: #2C3E50;
  --color-white: #FFFFFF;
  --color-black: #000000;
  --font-light: 200;
  --font-thin: 100;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--color-stone);
  background-color: var(--color-cream);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 导航栏样式 */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.nav-link {
  font-weight: var(--font-light);
  letter-spacing: 2px;
  transition: opacity 0.3s ease;
}

.nav-link:hover {
  opacity: 0.6;
}

/* 首屏全屏背景 */
.hero-section {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.9);
}

.hero-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2rem;
  font-weight: var(--font-thin);
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 4px;
  text-align: center;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  animation: fadeIn 2s ease-in;
}

/* 瀑布流网格 */
.gallery-grid {
  column-count: 3;
  column-gap: 1.5rem;
  padding: 3rem 2rem;
}

.gallery-item {
  break-inside: avoid;
  margin-bottom: 1.5rem;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.4s ease;
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

/* 横向滚动布局 */
.horizontal-scroll {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

.horizontal-scroll::-webkit-scrollbar {
  display: none;
}

.scroll-section {
  min-width: 100vw;
  height: 100vh;
  scroll-snap-align: start;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem;
}

.scroll-content {
  max-width: 1200px;
  display: flex;
  gap: 4rem;
  align-items: center;
}

.scroll-image {
  flex: 1;
  max-width: 600px;
}

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

.scroll-text {
  flex: 1;
  font-size: 1.2rem;
  font-weight: var(--font-light);
  letter-spacing: 2px;
  color: var(--color-stone);
  line-height: 2;
}

/* 幻灯片样式 */
.slideshow-container {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

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

.slide.active {
  opacity: 1;
}

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

.slide-nav {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 1rem;
  z-index: 10;
}

.slide-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.3s ease;
}

.slide-dot.active {
  background: rgba(255, 255, 255, 1);
  transform: scale(1.2);
}

/* 页脚样式 */
.footer {
  background: var(--color-black);
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
  padding: 2rem;
  font-size: 0.875rem;
  font-weight: var(--font-light);
  letter-spacing: 2px;
}

/* 动画效果 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translate(-50%, -45%);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%);
  }
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .gallery-grid {
    column-count: 2;
  }
  
  .scroll-content {
    flex-direction: column;
    gap: 2rem;
  }
  
  .hero-text {
    font-size: 1.5rem;
  }
}

@media (max-width: 640px) {
  .gallery-grid {
    column-count: 1;
    padding: 2rem 1rem;
  }
  
  .hero-text {
    font-size: 1.2rem;
    letter-spacing: 2px;
  }
  
  .scroll-section {
    padding: 2rem 1rem;
  }
  
  .scroll-text {
    font-size: 1rem;
  }
  
  .nav-link {
    font-size: 0.875rem;
    letter-spacing: 1px;
  }
}

/* 懒加载占位符 */
.lazy-load {
  background: linear-gradient(90deg, var(--color-oat) 25%, var(--color-cream) 50%, var(--color-oat) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

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