:root {
  --bg: #f7f9fc;
  --card-bg: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --primary: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --accent: #eef2ff;
}

html {
  scroll-behavior: smooth;
}

html, body {
  margin: 0;
  padding: 0;
}

.anchor-offset {
  scroll-margin-top: 72px;
}

body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Microsoft Yahei", sans-serif;
  background: linear-gradient(180deg, var(--bg) 0%, #fbfcfe 100%);
  color: var(--text);
  line-height: 1.6;
}

.tab-panel {
  display: none;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.tab-panel.active {
  display: block;
}

.tab-panel.fade-in {
  opacity: 1;
}

/* 切换动画（由 index_tabs.js 添加） */
.fade-in {
  animation: fadeIn 160ms ease-out;
}

@keyframes fadeIn {
  from { opacity: 0.4; transform: translateY(2px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 卡片（图表 / 资讯）区域 */
.chart-container {
  width: 90%;
  max-width: 1200px;
  margin: 24px auto;
  padding: 20px 20px 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.06);
}

.chart-controls {
  text-align: center;
  margin-bottom: 16px;
}

.chart-controls button {
  padding: 10px 18px;
  background: linear-gradient(180deg, var(--primary) 0%, var(--primary-600) 100%);
  color: #ffffff;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  margin: 0 6px;
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.25);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.chart-controls button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(29, 78, 216, 0.25);
  background: linear-gradient(180deg, var(--primary-600) 0%, var(--primary-700) 100%);
}

#chart-area {
  min-height: 420px;
  border: 1px dashed var(--border);
  background-color: #ffffff;
  padding: 12px;
  border-radius: 10px;
}

.loading {
  text-align: center;
  padding: 24px;
  color: var(--muted);
  font-size: 14px;
}

.error {
  color: #dc2626;
  text-align: center;
  padding: 20px;
  font-weight: 500;
}

/* 表格样式（涨停明细：复刻旧版） */
table {
  border-collapse: separate;
  border-spacing: 0;
  width: 90%;
  max-width: 1200px;
  margin: 20px auto 36px;
  background: var(--card-bg);
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.06);
  overflow: hidden;
}

thead th {
  background: #f8fafc;
  color: #111827;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  padding: 12px 10px;
}

th, td {
  border: none;
  padding: 12px 10px;
  text-align: center;
}

tbody tr {
  border-bottom: 1px solid var(--border);
}

tbody tr:last-child {
  border-bottom: none;
}

tbody tr:nth-child(even) {
  background: #fafbff;
}

tbody tr:hover {
  background: #eef2ff;
}

.table-empty {
  text-align: center;
  color: var(--muted);
  padding: 24px 0;
}

/* 主题标签（复刻旧版） */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  font-size: 12px;
  color: #3730a3;
  background: #eef2ff;
  border: 1px solid #e0e7ff;
  border-radius: 999px;
  white-space: nowrap;
}

.tag.clickable {
  cursor: pointer;
  transition: background .15s ease, color .15s ease, transform .1s ease;
}

.tag.clickable:hover {
  background: #c7d2fe;
  color: #1e3a8a;
  transform: translateY(-1px);
}

.tag.clickable.active {
  background: #6366f1;
  color: #ffffff;
  border-color: #4f46e5;
}

/* 日期控件（复刻旧版） */
.date-controls {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 14px;
}

.date-tabs {
  display: inline-flex;
  gap: 8px;
  flex-wrap: wrap;
}

.date-tab {
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  transition: background .15s ease, color .15s ease, box-shadow .15s ease;
}

.date-tab:hover {
  background: var(--accent);
  color: var(--primary-700);
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.08);
}

.date-tab.active {
  background: var(--primary);
  border-color: var(--primary-600);
  color: #fff;
  box-shadow: 0 6px 18px rgba(59, 130, 246, 0.25);
}

.date-picker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.date-picker label {
  font-weight: 600;
  color: #1f2937;
}

.date-picker input[type="date"] {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  font-size: 14px;
  color: var(--text);
  outline: none;
}

.date-picker button {
  padding: 8px 14px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  border-radius: 8px;
  cursor: pointer;
  transition: background .15s ease, box-shadow .15s ease;
}

.date-picker button:hover {
  background: var(--accent);
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.08);
}

.date-note {
  color: var(--muted);
}

/* 主题股票展开区域（复刻旧版） */
.theme-stocks-expand {
  display: none;
  padding: 12px 20px;
  background: #f8fafc;
  border-top: 1px solid var(--border);
}

.theme-stocks-expand.show {
  display: block;
}

.theme-stocks-header {
  font-size: 13px;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 8px;
}

.theme-stocks-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.theme-stock-item {
  padding: 4px 10px;
  font-size: 12px;
  color: #374151;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  white-space: nowrap;
}

/* 主题股票名称汇总行样式（复刻旧版） */
.theme-stock-names-row {
  background: #f9fafb;
}

.theme-stock-names-cell {
  padding: 8px 20px;
  border-top: 1px dashed var(--border);
  font-size: 12px;
  color: #374151;
}

.theme-stock-names-header {
  font-weight: 600;
  margin-bottom: 4px;
  color: #111827;
}

.theme-stock-names-content {
  line-height: 1.6;
  word-break: break-all;
}

.theme-stocks-loading {
  padding: 8px;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
}

.theme-stocks-error {
  padding: 8px;
  text-align: center;
  color: #dc2626;
  font-size: 12px;
}

/* 连板胶囊（复刻旧版） */
.pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 12px;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid #bfdbfe;
  background: #dbeafe;
  color: #1d4ed8;
}

@media (max-width: 960px) {
  table, .chart-container, .date-controls {
    width: 94%;
  }
}