@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
  --color-primary: #000000;
  --color-secondary: #ffffff;
  --color-accent: #f5f5f5;
  --color-gray-light: #fafafa;
  --color-gray-medium: #e5e5e5;
  --color-gray-dark: #333333;
  --font-family-base: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  color: var(--color-primary);
  background-color: var(--color-secondary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 视差滚动效果 */
.parallax {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.parallax-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 120%;
  will-change: transform;
}

/* 瀑布流布局 */
.masonry {
  column-count: 3;
  column-gap: 1rem;
}

@media (max-width: 1024px) {
  .masonry {
    column-count: 2;
  }
}

@media (max-width: 640px) {
  .masonry {
    column-count: 1;
  }
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 1rem;
}

/* 灯箱效果 */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.lightbox.active {
  display: flex;
}

.lightbox img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
}

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

.fade-in {
  animation: fadeIn 0.8s ease-out;
}

/* 导航栏样式 */
.nav-fixed {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.9);
  transition: all 0.3s ease;
}

/* 图片悬停效果 */
.image-hover {
  transition: transform 0.3s ease, filter 0.3s ease;
}

.image-hover:hover {
  transform: scale(1.02);
  filter: brightness(1.05);
}

/* 文本排版 */
.text-poetry {
  font-weight: 300;
  letter-spacing: 0.05em;
  line-height: 1.8;
}

.text-story {
  max-width: 600px;
  margin: 0 auto;
  padding: 2rem;
  font-size: 1.125rem;
  line-height: 2;
  color: var(--color-gray-dark);
}

/* 分类筛选按钮 */
.filter-btn {
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--color-gray-medium);
  background: transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: var(--font-family-base);
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--color-primary);
  color: var(--color-secondary);
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-gray-light);
}

::-webkit-scrollbar-thumb {
  background: var(--color-gray-medium);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-dark);
}

/* 页脚样式 */
footer {
  padding: 2rem;
  text-align: center;
  color: var(--color-gray-dark);
  font-size: 0.875rem;
}