/* 全局公共样式 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  min-height: 100vh; background: var(--bg-page); color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  display: flex; flex-direction: column; align-items: center;
}

/* 导航栏（公共） */
nav {
  width: 100%; padding: 16px 40px; display: flex; justify-content: space-between; align-items: center;
  background: rgba(var(--white-rgb), 0.88); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-nav); position: fixed; top: 0; z-index: 100;
}
nav .logo-sm { font-size: 18px; font-weight: 700; color: var(--primary-color); }
nav .nav-links a { color: var(--text-secondary); text-decoration: none; margin-left: 28px; font-size: 14px; transition: color 0.2s; }
nav .nav-links a:hover { color: var(--text-main); }

/* Hero区 - 主页样式 */
.hero { margin-top: 100px; display: flex; flex-direction: column; align-items: center; width: 100%; max-width: 720px; padding: 0 20px; }
.hero h1 {
  font-size: 48px; font-weight: 800;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-color-light), var(--h1-gradient-last));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  letter-spacing: -1px; margin-bottom: 12px;
}
.hero p { color: var(--text-secondary); font-size: 16px; margin-bottom: 40px; }

/* Hero区 - 结果页样式（仅搜索框，无标题） */
.hero-result { margin-top: 120px; }

/* 搜索框（公共） */
.search-box { width: 100%; position: relative; }
.search-box input {
  width: 100%; height: 56px; border-radius: 16px; border: 1px solid var(--border-main); background: var(--bg-white);
  padding: 0 130px 0 24px; font-size: 16px; color: var(--text-main); outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.search-box input::placeholder { color: var(--text-placeholder); }
.search-box input:focus { 
  border-color: var(--primary-color); 
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.12), 0 8px 32px rgba(var(--primary-rgb), 0.08); 
}
.search-box button {
  position: absolute; right: 6px; top: 6px; height: 44px; padding: 0 28px; border: none; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-color-light)); color: var(--text-white); font-size: 15px; font-weight: 600;
  cursor: pointer; transition: transform 0.15s, box-shadow 0.2s;
}
.search-box button:hover { 
  transform: translateY(-1px); 
  box-shadow: 0 4px 16px rgba(var(--primary-rgb), 0.35); 
}
.search-box button:active { transform: translateY(0); }

/* 热门标签（仅主页） */
.hot-tags { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.hot-tags span.label { color: var(--text-secondary); font-size: 13px; line-height: 32px; }
.hot-tags a {
  display: inline-block; padding: 4px 14px; border-radius: 8px; background: var(--bg-white); color: var(--text-tertiary);
  font-size: 13px; line-height: 1.75; text-decoration: none; border: 1px solid var(--border-main);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.hot-tags a:hover { 
  background: var(--bg-primary-light); 
  color: var(--primary-color); 
  border-color: var(--primary-color-lighter); 
}

/* 功能卡片（仅主页） */
.features { margin-top: 80px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; width: 100%; max-width: 800px; padding: 0 20px; }
.card {
  background: var(--bg-white); border: 1px solid var(--border-main); border-radius: 16px; padding: 28px 24px; text-align: center;
  transition: border-color 0.3s, transform 0.2s, box-shadow 0.3s;
}
.card:hover { 
  border-color: var(--primary-color-lighter); 
  transform: translateY(-4px); 
  box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.08); 
}
.card .icon {
  width: 48px; height: 48px; border-radius: 12px; background: var(--bg-primary-light);
  display: inline-flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 16px;
}
.card h3 { font-size: 15px; font-weight: 600; margin-bottom: 8px; color: var(--text-main); }
.card p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

/* 加载动画（仅结果页） */
.loading {
  margin-top: 40px; display: none; flex-direction: column; align-items: center; gap: 16px;
  width: 100%; max-width: 800px; padding: 40px 20px;
}
.loading-spinner {
  width: 40px; height: 40px; border: 4px solid var(--border-main); border-top: 4px solid var(--primary-color);
  border-radius: 50%; animation: spin 1s linear infinite;
}
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
.loading-text { color: var(--text-secondary); font-size: 14px; }

/* 搜索结果模块（仅结果页） */
.search-results {
  margin-top: 40px; display: none; width: 100%; max-width: 800px; padding: 0 20px;
}
/* 结果统计栏 */
.result-stats {
  background: var(--bg-white); border: 1px solid var(--border-main); border-radius: 16px; padding: 16px 24px;
  margin-bottom: 20px; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
}
.stats-left { display: flex; gap: 24px; }
.stats-item { color: var(--text-secondary); font-size: 14px; }
.stats-item strong { color: var(--primary-color); font-weight: 600; }
.stats-sort select {
  padding: 6px 12px; border: 1px solid var(--border-main); border-radius: 8px; background: var(--bg-white);
  color: var(--text-tertiary); font-size: 13px; outline: none; cursor: pointer;
}
.stats-sort select:focus { border-color: var(--primary-color); }

/* 结果列表 */
.result-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 24px; }
.result-item {
  background: var(--bg-white); border: 1px solid var(--border-main); border-radius: 16px; padding: 20px 24px;
  transition: border-color 0.2s, transform 0.2s;
}
.result-item a {
  text-decoration: none;
}
.result-item:hover { 
  border-color: var(--primary-color-lighter); 
  transform: translateY(-2px); 
}
.result-title {
  color: var(--text-main); font-size: 15px; font-weight: 600; text-decoration: none;
  line-height: 1.5; margin-bottom: 12px; display: block;
}
.result-title:hover { color: var(--primary-color); }
.result-meta {
  display: flex; flex-wrap: wrap; gap: 16px; color: var(--text-secondary); font-size: 13px;
}
.meta-p-badge {
  background: var(--primary-color); color: var(--bg-primary-light); padding: 2px 8px; border-radius: 6px;
  font-size: 12px; font-weight: 500;
}
.meta-badge {
  background: var(--bg-primary-light); color: var(--primary-color); padding: 2px 8px; border-radius: 6px;
  font-size: 12px; font-weight: 500;
}
.size-badge {
  background: var(--bg-yellow-light); color: var(--text-yellow); padding: 2px 8px; border-radius: 6px;
  font-size: 12px; font-weight: 500;
}

/* 分页模块（仅结果页） */
.pagination {
  display: flex; justify-content: center; gap: 8px; flex-wrap: wrap;
}
.page-btn {
  padding: 8px 16px; border: 1px solid var(--border-main); border-radius: 8px; background: var(--bg-white);
  color: var(--text-tertiary); font-size: 13px; cursor: pointer; transition: all 0.2s;
}
.page-btn:hover { 
  border-color: var(--primary-color); 
  color: var(--primary-color); 
}
.page-btn.active { 
  background: var(--primary-color); 
  color: var(--text-white); 
  border-color: var(--primary-color); 
}
.page-btn:disabled { 
  opacity: 0.5; cursor: not-allowed; 
  border-color: var(--border-main); 
  color: var(--text-placeholder); 
}

/* 页脚（公共） */
footer { margin-top: auto; padding: 40px 20px 24px; text-align: center; color: var(--text-secondary); font-size: 13px; width: 100%; border-top: 1px solid var(--border-main); }
/* 主页footer margin-top */
.foot-main { margin-top: 100px; }
/* 结果页footer margin-top */
.foot-result { margin-top: 60px; }
footer a { color: var(--text-tertiary); text-decoration: none; }
footer a:hover { color: var(--primary-color); }

/* 移动端适配（公共） */
@media (max-width: 640px) {
  .hero { margin-top: 80px; }
  .hero-result { margin-top: 100px; }
  .hero h1 { font-size: 32px; }
  .features { grid-template-columns: 1fr; max-width: 400px; }
  .search-results { max-width: 400px; }
  .stats-left { flex-direction: column; gap: 8px; margin-bottom: 12px; }
  nav { padding: 12px 20px; }
}
.highlight { color: var(--primary-color); }