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

:root {
  /* 配色方案 */
  --color-primary: #4F46E5; /* 主色 Indigo */
  --color-secondary: #D9E2FF; /* 辅色 Lavender Blue */
  --color-accent: #3730A3; /* 强调色 Dark Indigo */
  --color-background: #F0F4FF; /* 背景色 Ghost White */
  --color-text: #1E293B; /* 主文本色 */
  --color-text-secondary: #64748B; /* 次要文本色 */
  --color-border: #CBD5E1; /* 边框色 */
  --color-white: #FFFFFF; /* 白色 */
  --color-footer-bg: #E2E8F0; /* 页脚背景色 */
}

body {
  font-family: 'Noto Sans SC', sans-serif;
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

/* 页眉样式 */
.site-header {
  background-color: var(--color-white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 1rem 0;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.5rem;
}

.logo-svg {
  width: 48px;
  height: 48px;
  margin-right: 0.5rem;
}

/* 导航菜单 */
.main-nav {
  display: none;
}

.main-nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--color-text);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.main-nav a:hover {
  background-color: var(--color-secondary);
  color: var(--color-accent);
}

/* 移动端菜单按钮 */
.menu-toggle {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  border-radius: 4px;
}

.menu-toggle:hover {
  background-color: var(--color-secondary);
}

.menu-icon {
  width: 24px;
  height: 24px;
}

/* 移动端菜单 */
.mobile-menu {
  display: none;
  background-color: var(--color-white);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  padding: 1rem;
}

.mobile-menu.show {
  display: block;
}

.mobile-menu ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mobile-menu a {
  display: block;
  padding: 0.75rem 1rem;
  text-decoration: none;
  color: var(--color-text);
  border-radius: 4px;
  transition: background-color 0.3s ease;
}

.mobile-menu a:hover {
  background-color: var(--color-secondary);
}

/* 搜索和按钮区域 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.search-input {
  display: none; /* 默认隐藏搜索框 */
  padding: 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: 0.9rem;
}

.action-button {
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  cursor: pointer;
  font-weight: 500;
  transition: background-color 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.action-button:hover {
  background-color: var(--color-accent);
}

/* 主内容区 */
.main-content {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
}

/* 页脚样式 */
.site-footer {
  background-color: var(--color-footer-bg);
  padding: 2rem 0;
  margin-top: 3rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--color-text);
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--color-primary);
}

.copyright {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* 响应式设计 */
@media (min-width: 768px) {
  .main-nav {
    display: block;
  }

  .menu-toggle {
    display: none;
  }

  .search-input {
    display: block;
  }
}