/* ========================================
   清代天文档案平台 - 高级检索页样式
   ======================================== */

/* ==================== 页面标题区域 ==================== */
.search-header {
  background: linear-gradient(135deg, rgba(160, 36, 34, 0.05) 0%, rgba(212, 175, 55, 0.05) 100%);
  border: 2px solid var(--imperial-gold);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.search-header h1 {
  font-size: 2.5rem;
  color: var(--imperial-red);
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.1em;
}

.search-header p {
  font-size: 1.1rem;
  color: var(--text-muted);
  font-family: var(--font-serif);
}

.mobile-search-actions {
  margin-bottom: var(--spacing-md);
}

/* ==================== 搜索主区域 ==================== */
.search-main {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

/* 移动端改为单列 */
@media (max-width: 991.98px) {
  .search-main {
    grid-template-columns: 1fr;
  }
}

/* ==================== 筛选面板 ==================== */
.filter-panel {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-card) 100%);
  border: 2px solid var(--imperial-gold);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: var(--spacing-lg);
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}

@media (min-width: 992px) {
  #mobileFilterPanel {
    display: block !important;
    height: auto !important;
    visibility: visible !important;
  }
}

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

.filter-panel::-webkit-scrollbar-track {
  background: var(--bg-primary);
  border-radius: var(--radius-sm);
}

.filter-panel::-webkit-scrollbar-thumb {
  background: var(--imperial-gold);
  border-radius: var(--radius-sm);
}

.filter-panel::-webkit-scrollbar-thumb:hover {
  background: var(--bronze-brown);
}

/* 筛选面板标题 */
.filter-panel h3 {
  font-size: 1.3rem;
  color: var(--imperial-red);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--imperial-gold);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.filter-panel h3 .badge {
  font-size: 0.9rem;
  padding: 0.3em 0.6em;
  background-color: var(--imperial-red);
  color: white;
}

/* 筛选组 */
.filter-group {
  margin-bottom: var(--spacing-lg);
}

.filter-group-title {
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.filter-group-title .clear-btn {
  font-size: 0.85rem;
  color: var(--imperial-red);
  cursor: pointer;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.filter-group-title .clear-btn:hover {
  color: var(--bronze-brown);
  text-decoration: underline;
}

/* ==================== 时间范围滑块 ==================== */
.range-slider-container {
  padding: var(--spacing-sm) 0;
}

.range-label {
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
  font-size: 0.9rem;
}

.range-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border-light);
  outline: none;
  -webkit-appearance: none;
  margin: var(--spacing-xs) 0;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--imperial-red);
  cursor: pointer;
  border: 3px solid white;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  transition: all var(--transition-fast);
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  background: var(--bronze-brown);
}

.range-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--imperial-red);
  cursor: pointer;
  border: 3px solid white;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  transition: all var(--transition-fast);
}

.range-slider::-moz-range-thumb:hover {
  transform: scale(1.2);
  background: var(--bronze-brown);
}

.range-values {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-xs);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.range-value {
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  min-width: 80px;
  text-align: center;
  font-weight: 600;
  color: var(--imperial-red);
}

/* ==================== 多选标签 ==================== */
.multi-select-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.multi-select-item {
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--bg-card);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.9rem;
  user-select: none;
}

.multi-select-item:hover {
  border-color: var(--imperial-gold);
  background-color: rgba(212, 175, 55, 0.1);
}

.multi-select-item.selected {
  background-color: var(--imperial-red);
  border-color: var(--imperial-red);
  color: white;
  font-weight: 600;
}

.multi-select-item .count {
  margin-left: var(--spacing-xs);
  opacity: 0.7;
  font-size: 0.85em;
}

/* ==================== 全文搜索框 ==================== */
.fulltext-search {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.fulltext-search input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  padding-right: 100px;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.fulltext-search input:focus {
  border-color: var(--imperial-gold);
  box-shadow: 0 0 0 0.2rem rgba(212, 175, 55, 0.15);
  outline: none;
}

.fulltext-search .search-actions {
  position: absolute;
  right: var(--spacing-xs);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  gap: var(--spacing-xs);
}

.fulltext-search .search-actions .btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.9rem;
}

/* ==================== 搜索选项 ==================== */
.search-options {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm);
  background-color: var(--bg-card);
  border-radius: var(--radius-sm);
}

.search-option {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-xs);
  cursor: pointer;
  user-select: none;
}

.search-option:last-child {
  margin-bottom: 0;
}

.search-option input[type="checkbox"] {
  margin-right: var(--spacing-xs);
  cursor: pointer;
}

.search-option label {
  margin: 0;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ==================== 保存的搜索条件 ==================== */
.saved-searches {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 2px solid var(--border-light);
}

.saved-searches h4 {
  font-size: 1.1rem;
  color: var(--imperial-red);
  margin-bottom: var(--spacing-sm);
}

.saved-search-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm);
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.saved-search-item:hover {
  border-color: var(--imperial-gold);
  background-color: rgba(212, 175, 55, 0.05);
}

.saved-search-name {
  flex: 1;
  font-weight: 600;
  color: var(--text-primary);
}

.saved-search-actions {
  display: flex;
  gap: var(--spacing-xs);
}

.saved-search-actions .btn {
  padding: 0.2em 0.5em;
  font-size: 0.8rem;
}

/* ==================== 搜索结果区域 ==================== */
.search-results-panel {
  background-color: var(--bg-card);
  border: 2px solid var(--imperial-gold);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

/* 结果统计栏 */
.results-stats {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-card) 100%);
  border: 2px solid var(--imperial-gold);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.results-count {
  font-size: 1.1rem;
  color: var(--text-primary);
}

.results-count strong {
  color: var(--imperial-red);
  font-size: 1.3rem;
}

.results-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* 结果工具栏 */
.results-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.results-view-toggle {
  display: flex;
  gap: var(--spacing-xs);
}

.results-view-toggle .btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.9rem;
}

.results-sort {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.results-sort select {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.compare-panel .table-responsive {
  overflow-x: auto;
}

/* ==================== 搜索结果列表 ==================== */
.search-results-list {
  display: grid;
  gap: var(--spacing-md);
}

/* 列表视图 */
.result-item-list {
  background-color: var(--bg-card);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all var(--transition-base);
  cursor: pointer;
}

.result-item-list:hover {
  border-color: var(--imperial-gold);
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.result-item-list .result-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}

.result-item-list .result-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--imperial-red);
  margin: 0;
  flex: 1;
}

.result-item-list .result-meta {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  flex-wrap: wrap;
}

.result-item-list .result-meta span {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.result-item-list .result-snippet {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

.result-item-list .result-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--border-light);
}

.result-item-list .result-tags {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.result-item-list .result-actions {
  display: flex;
  gap: var(--spacing-xs);
}

/* 网格视图 */
.result-item-grid {
  background-color: var(--bg-card);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all var(--transition-base);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.result-item-grid:hover {
  border-color: var(--imperial-gold);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.result-item-grid .result-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--imperial-red);
  margin-bottom: var(--spacing-sm);
}

.result-item-grid .result-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-sm);
}

.result-item-grid .result-snippet {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: var(--spacing-sm);
  flex: 1;
}

/* ==================== 结果对比面板 ==================== */
.compare-panel {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-card) 100%);
  border: 2px solid var(--imperial-gold);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  display: none;
}

.compare-panel.active {
  display: block;
  animation: slideDown 0.3s ease;
}

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

.compare-panel h3 {
  font-size: 1.3rem;
  color: var(--imperial-red);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--spacing-md);
}

.compare-table th,
.compare-table td {
  padding: var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}

.compare-table th {
  background-color: var(--bg-secondary);
  color: var(--imperial-red);
  font-weight: 600;
  width: 150px;
}

.compare-table td {
  color: var(--text-secondary);
}

/* ==================== 分页控件 ==================== */
.results-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-md);
}

/* ==================== 高亮文本 ==================== */
.highlight {
  background-color: var(--imperial-yellow);
  padding: 2px 4px;
  border-radius: 3px;
  font-weight: 600;
}

.highlight-secondary {
  background-color: rgba(160, 36, 34, 0.1);
  border-bottom: 2px solid var(--imperial-red);
  padding: 0 2px;
}

/* ==================== 响应式设计 ==================== */

/* 移动端优化 */
@media (max-width: 767.98px) {
  .search-header h1 {
    font-size: 1.75rem;
  }

  .filter-panel {
    position: static;
    max-height: none;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
  }

  .mobile-search-actions .btn {
    min-height: 46px;
    font-weight: 600;
    letter-spacing: 0.04em;
  }

  .fulltext-search input {
    padding-right: var(--spacing-md);
  }

  .fulltext-search .search-actions {
    position: static;
    transform: none;
    margin-top: var(--spacing-sm);
    justify-content: stretch;
  }

  .fulltext-search .search-actions .btn {
    flex: 1;
    min-height: 42px;
  }

  .search-main {
    gap: var(--spacing-md);
  }

  .results-stats {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
    padding: var(--spacing-sm);
  }

  .results-actions {
    width: 100%;
  }

  .results-actions .btn {
    flex: 1 1 100%;
    min-height: 42px;
  }

  .results-toolbar {
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
  }

  .results-view-toggle,
  .results-sort {
    width: 100%;
    justify-content: center;
  }

  .results-view-toggle .btn,
  .results-sort select {
    width: 100%;
    min-height: 42px;
  }

  .results-sort {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-xs);
  }

  .result-item-list .result-header {
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .result-item-list,
  .result-item-grid,
  .search-results-panel {
    padding: var(--spacing-md);
  }

  .result-item-list .result-meta,
  .result-item-list .result-actions,
  .result-item-list .result-tags {
    gap: 0.4rem;
  }

  .result-item-list .result-footer {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: stretch;
  }

  .result-item-list .result-actions {
    justify-content: center;
  }

  .compare-table {
    font-size: 0.9rem;
  }

  .compare-table th,
  .compare-table td {
    padding: var(--spacing-xs);
  }

  .multi-select-container {
    gap: 0.4rem;
  }

  .multi-select-item {
    min-height: 38px;
    display: inline-flex;
    align-items: center;
  }
}

/* 平板端优化 */
@media (min-width: 768px) and (max-width: 1023.98px) {
  .search-main {
    grid-template-columns: 300px 1fr;
  }
}

/* ==================== 加载状态 ==================== */
.loading-results {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-muted);
}

.loading-spinner {
  width: 50px;
  height: 50px;
  margin: 0 auto var(--spacing-md);
  border: 4px solid var(--border-light);
  border-top-color: var(--imperial-red);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ==================== 空状态 ==================== */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-state-title {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.empty-state-description {
  font-size: 1rem;
  margin-bottom: var(--spacing-md);
}

/* ==================== 打印样式 ==================== */
@media print {
  .filter-panel,
  .results-toolbar,
  .results-pagination,
  .compare-panel {
    display: none !important;
  }

  .search-main {
    grid-template-columns: 1fr;
  }

  .result-item-list,
  .result-item-grid {
    page-break-inside: avoid;
  }
}