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

/* 设计令牌 */
:root {
  --color-primary: #f5f5f0;
  --color-secondary: #e8e8e3;
  --color-accent: #d4af37;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-lighter: #999999;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --border-radius: 0.25rem;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础样式 */
* {
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
  font-weight: 300;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-primary);
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(245, 245, 240, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: var(--transition);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-accent);
  transition: width 0.3s ease;
}

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

/* 页面容器 */
.page-container {
  min-height: 100vh;
  padding-top: 80px;
  opacity: 0;
  animation: fadeIn 0.8s ease forwards;
}

/* 图片样式 */
.image-container {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease, filter 0.5s ease;
}

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

.image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  color: white;
  padding: var(--spacing-sm);
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.image-container:hover .image-overlay {
  transform: translateY(0);
}

/* 网格布局 */
.grid-layout {
  display: grid;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* 瀑布流布局 */
.masonry-layout {
  column-count: 4;
  column-gap: var(--spacing-sm);
  padding: var(--spacing-md);
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: var(--spacing-sm);
}

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.8;
  }
}

/* 标签样式 */
.tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-secondary);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
}

.tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.tag.active {
  background-color: var(--color-accent);
  color: white;
}

/* 文本样式 */
.text-muted {
  color: var(--color-text-light);
}

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

.text-uppercase {
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  border: 1px solid var(--color-text);
  color: var(--color-text);
  text-decoration: none;
  transition: var(--transition);
  font-weight: 400;
  background: transparent;
}

.btn:hover {
  background-color: var(--color-text);
  color: var(--color-primary);
}

/* 页脚样式 */
.footer {
  text-align: center;
  padding: var(--spacing-md);
  color: var(--color-text-lighter);
  font-size: 0.875rem;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .masonry-layout {
    column-count: 3;
  }
}

@media (max-width: 768px) {
  .masonry-layout {
    column-count: 2;
  }
  
  .grid-layout {
    padding: var(--spacing-sm);
  }
  
  .page-container {
    padding-top: 60px;
  }
}

@media (max-width: 480px) {
  .masonry-layout {
    column-count: 1;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .tag {
    font-size: 0.75rem;
    padding: calc(var(--spacing-xs) * 0.75) calc(var(--spacing-sm) * 0.75);
  }
}

/* 懒加载动画 */
.lazy-load {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.lazy-load.loaded {
  opacity: 1;
}

/* 轮播图样式 */
.carousel {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

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

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

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

/* 详细解析布局 */
.analysis-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
}

/* 打字机效果 */
.typewriter {
  overflow: hidden;
  white-space: nowrap;
  animation: typing 3s steps(40, end);
}

@keyframes typing {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}