/* 基础样式和变量 */
:root {
  --primary-color: #2563eb;
  --secondary-color: #64748b;
  --accent-color: #f59e0b;
  --success-color: #10b981;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  --info-color: #3b82f6;
  
  --bg-color: #ffffff;
  --surface-color: #f8fafc;
  --card-color: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --transition: all 0.2s ease-in-out;
}

/* 暗色主题 */
[data-theme="dark"] {
  --bg-color: #0f172a;
  --surface-color: #1e293b;
  --card-color: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --border-color: #475569;
}

/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  transition: var(--transition);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 头部样式 */
.header {
  background-color: var(--card-color);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.nav {
  display: flex;
  gap: 2rem;
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle {
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.theme-toggle:hover {
  background-color: var(--surface-color);
}

.last-update {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* 概览卡片 */
.overview-section {
  background-color: var(--surface-color);
  padding: 2rem 0;
}

.overview-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.overview-card {
  background-color: var(--card-color);
  padding: 1.5rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition);
}

.overview-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background-color: var(--primary-color);
  color: white;
}

.card-icon.new {
  background-color: var(--warning-color);
}

.card-icon.important {
  background-color: var(--danger-color);
}

.card-icon.platforms {
  background-color: var(--success-color);
}

.card-content h3 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.card-content p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* 主要内容区域 */
.main {
  padding: 2rem 0;
}

.content-section {
  display: none;
}

.content-section.active {
  display: block;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.section-header h2 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--text-primary);
}

.section-filters {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.section-filters select,
.section-filters input {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background-color: var(--card-color);
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: var(--transition);
}

.section-filters select:focus,
.section-filters input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

/* 事件列表 */
.events-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.event-card {
  background-color: var(--card-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}

.event-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-color);
}

.event-card.new {
  border-left: 4px solid var(--warning-color);
}

.event-card.important {
  border-left: 4px solid var(--danger-color);
}

.event-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.event-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.platform-badge {
  background-color: var(--primary-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}

.platform-badge.cls {
  background-color: #dc2626;
}

.platform-badge.jiuyangongshe {
  background-color: #059669;
}

.platform-badge.tonghuashun {
  background-color: #7c3aed;
}

.platform-badge.investing {
  background-color: #ea580c;
}

.platform-badge.eastmoney {
  background-color: #0891b2;
}

.importance-stars {
  color: var(--warning-color);
}

.event-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.event-content {
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  line-height: 1.5;
}

.event-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.tag {
  background-color: var(--surface-color);
  color: var(--text-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
}

.event-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 0.5rem;
}

.stocks-list {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.stock-code {
  background-color: var(--info-color);
  color: white;
  padding: 0.125rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: var(--border-radius);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: #1d4ed8;
}

.btn-outline {
  background-color: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

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

/* 模态框 */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  background-color: var(--card-color);
  margin: 5% auto;
  padding: 0;
  border-radius: var(--border-radius-lg);
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
}

.close {
  font-size: 1.5rem;
  font-weight: bold;
  cursor: pointer;
  color: var(--text-muted);
  transition: var(--transition);
}

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

.modal-body {
  padding: 1.5rem;
}

/* 加载状态 */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 3rem;
  color: var(--text-secondary);
}

.loading i {
  font-size: 1.5rem;
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
}

.empty-state i {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--text-muted);
}

/* 关于页面 */
.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.about-card {
  background-color: var(--card-color);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
}

.about-card h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.about-card ul {
  list-style: none;
  padding-left: 0;
}

.about-card li {
  padding: 0.25rem 0;
  color: var(--text-secondary);
}

.about-card li strong {
  color: var(--text-primary);
}

.github-link {
  text-align: center;
  margin-top: 3rem;
}

/* 响应式设计 (继续) */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
  
  .header-content {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav {
    gap: 1rem;
  }
  
  .overview-cards {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
  
  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .section-filters {
    width: 100%;
    justify-content: stretch;
  }
  
  .section-filters select,
  .section-filters input {
    flex: 1;
    min-width: 120px;
  }
  
  .event-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .event-meta {
    flex-wrap: wrap;
  }
  
  .modal-content {
    margin: 10% auto;
    width: 95%;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .overview-cards {
    grid-template-columns: 1fr;
  }
  
  .section-filters {
    flex-direction: column;
  }
  
  .section-filters select,
  .section-filters input {
    width: 100%;
  }
}

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

.event-card {
  animation: fadeIn 0.3s ease-out;
}

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

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

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

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* 打印样式 */
@media print {
  .header,
  .overview-section,
  .section-filters,
  .modal {
    display: none !important;
  }
  
  .event-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
}
/* 历史数据页面样式 */
.history-stats {
    margin-bottom: 2rem;
}

.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.stat-card {
    background-color: var(--card-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.stat-card h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 搜索页面样式 */
.search-container {
    margin-bottom: 2rem;
}

.search-input-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.search-input-group input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--card-color);
    color: var(--text-primary);
    font-size: 1rem;
}

.search-filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.search-filters select,
.search-filters input {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--card-color);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.search-options {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
    margin: 0;
}

.search-results {
    min-height: 200px;
}

/* 加载状态增强 */
.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 3rem;
    color: var(--text-secondary);
}

.loading-spinner .spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 历史数据特殊样式 */
.event-card.historical {
    border-left: 4px solid var(--info-color);
    opacity: 0.9;
}

.event-card.historical .event-meta::before {
    content: "📚 ";
}

/* 响应式优化 */
@media (max-width: 768px) {
    .search-input-group {
        flex-direction: column;
    }
    
    .search-filters {
        flex-direction: column;
    }
    
    .stats-cards {
        grid-template-columns: 1fr;
    }
    
    .section-filters {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .section-filters input,
    .section-filters select,
    .section-filters button {
        width: 100%;
    }
}
/* 历史数据特殊样式 */
.historical-badge {
    background-color: var(--info-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.historical-tag {
    background-color: var(--info-color);
    color: white;
}

.event-card.historical {
    border-left: 4px solid var(--info-color);
    background-color: rgba(59, 130, 246, 0.05);
}

/* 模态框增强样式 */
.modal-event-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-event-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.modal-section {
    margin-bottom: 1.5rem;
}

.modal-section h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 600;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 0.75rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-label {
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 80px;
}

.info-value {
    color: var(--text-primary);
}

.stocks-list,
.themes-list,
.concepts-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* 搜索结果样式 */
.search-results .event-card {
    position: relative;
}

.search-results .event-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, var(--primary-color), var(--info-color));
}

/* 空状态样式增强 */
.empty-state.warning {
    color: var(--warning-color);
}

.empty-state.error {
    color: var(--danger-color);
}

.empty-state.empty {
    color: var(--text-muted);
}

/* 加载动画优化 */
.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 3rem;
    color: var(--text-secondary);
}

.loading-spinner .spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .modal-event-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .info-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .info-label {
        min-width: auto;
        font-size: 0.875rem;
    }
}