/* 设计令牌 */
:root {
  --color-primary: #000000;
  --color-secondary: #c4a57b;
  --color-accent: #d2691e;
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text-primary: #333333;
  --color-text-secondary: #666666;
  --font-chinese: "Noto Sans SC", sans-serif;
  --font-english: "Helvetica Neue", Arial, sans-serif;
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

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

/* 字体设置 */
body {
  font-family: var(--font-chinese), var(--font-english), sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: #888;
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #555;
}

/* 毛玻璃效果 */
.glass-effect {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.8);
}

/* 渐入动画 */
.fade-in {
  animation: fadeIn 0.8s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

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

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

/* 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;
}

/* 模态框样式 */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-content {
  position: relative;
  margin: 5% auto;
  width: 90%;
  max-width: 1200px;
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from { transform: translateY(-50px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.close {
  position: absolute;
  right: 20px;
  top: 20px;
  color: white;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  transition: color 0.3s ease;
}

.close:hover {
  color: #ccc;
}

/* 标签样式 */
.tag {
  display: inline-block;
  padding: 4px 12px;
  background-color: var(--color-bg);
  border: 1px solid #e0e0e0;
  border-radius: var(--border-radius-sm);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  transition: all 0.3s ease;
}

.tag:hover {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* 按钮样式 */
.btn {
  padding: 10px 24px;
  border: none;
  border-radius: var(--border-radius-md);
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-block;
}

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

.btn-primary:hover {
  background-color: #333;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* 卡片样式 */
.card {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* 文章样式 */
.article-content {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text-primary);
}

.article-content p {
  margin-bottom: 1.5rem;
}

.article-content img {
  width: 100%;
  height: auto;
  margin: 2rem 0;
  border-radius: var(--border-radius-md);
}

/* 响应式字体 */
@media (max-width: 640px) {
  html {
    font-size: 14px;
  }
}

/* 移动端菜单 */
.mobile-menu {
  transform: translateX(-100%);
  transition: transform 0.3s ease;
}

.mobile-menu.active {
  transform: translateX(0);
}

/* 加载动画 */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid #f3f3f3;
  border-top: 3px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}