:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-muted: #f1f4f8;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #64748b;
  --primary: #2563eb;
  --primary-soft: #eff6ff;
  --success: #059669;
  --success-soft: #ecfdf5;
  --warn: #d97706;
  --warn-soft: #fffbeb;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.layout {
  max-width: 1140px;
  margin: 0 auto;
  padding: 20px 16px 48px;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 14px;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-badge {
  background: #fff3e8;
  color: #ea580c;
  border: 1px solid #fed7aa;
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 600;
}

h1 {
  margin: 0;
  font-size: 20px;
}

.subtitle {
  margin: 6px 0 0;
  color: var(--text-muted);
  font-size: 13px;
}

.subtitle code {
  background: var(--surface-muted);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12px;
}

.topbar-metrics {
  display: flex;
  gap: 12px;
}

.metric-card {
  background: var(--surface-muted);
  border-radius: 10px;
  padding: 10px 16px;
  min-width: 96px;
  text-align: center;
}

.metric-card strong {
  display: block;
  font-size: 20px;
  color: var(--text);
}

.metric-card span {
  font-size: 12px;
  color: var(--text-muted);
}

/* 采集控制台 */
.collector-console {
  background: var(--surface);
  border: 1px solid #dbeafe;
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 16px;
}

.console-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.console-hint {
  margin-left: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.console-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}

.btn:disabled {
  opacity: 0.6;
  cursor: wait;
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.btn-secondary {
  background: var(--primary-soft);
  border-color: #bfdbfe;
  color: var(--primary);
}

.sync-feedback {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--surface-muted);
  font-size: 12.5px;
}

.sync-outcome-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}

.sync-pill {
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 12px;
  border: 1px solid var(--border);
  background: #fff;
}

.sync-pill.is-updated {
  background: var(--success-soft);
  border-color: #a7f3d0;
  color: var(--success);
}

.sync-pill.is-unchanged {
  background: #f8fafc;
  color: var(--text-muted);
}

.sync-pill.is-failed {
  background: #fef2f2;
  border-color: #fecaca;
  color: #dc2626;
}

/* 控制区 */
.workspace {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.search-row {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.search-row input {
  flex: 1;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
}

.search-row select,
.filter-selects select {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  font-size: 13px;
}

.tabs-and-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.mode-tabs {
  display: inline-flex;
  background: var(--surface-muted);
  padding: 3px;
  border-radius: 8px;
  gap: 4px;
}

.mode-tab {
  border: none;
  background: transparent;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text-muted);
}

.mode-tab.is-active {
  background: #fff;
  color: var(--text);
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

.filter-selects {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.brand-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.chip {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
  color: var(--text);
}

.chip.is-active {
  background: var(--text);
  color: #fff;
  border-color: var(--text);
}

.chip small {
  opacity: 0.7;
  margin-left: 3px;
}

/* 商品聚合表 */
.product-table-head {
  display: grid;
  grid-template-columns: 1fr 100px 90px;
  padding: 10px 8px;
  font-size: 12px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.product-row {
  border-bottom: 1px solid var(--border);
  padding: 12px 8px;
}

.product-summary {
  display: grid;
  grid-template-columns: 1fr 100px 90px;
  align-items: center;
  gap: 8px;
}

.product-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 4px;
}

.badge {
  font-size: 11px;
  padding: 1px 7px;
  border-radius: 4px;
  background: var(--surface-muted);
  color: var(--text-muted);
}

.badge-brand {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
}

.product-title {
  display: inline-block;
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  margin-bottom: 4px;
}

.product-title:hover {
  color: var(--primary);
}

.group-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  background: transparent;
  padding: 2px 0;
  color: var(--text-muted);
  font-size: 12.5px;
  cursor: pointer;
}

.group-toggle:hover {
  color: var(--primary);
}

.price-col {
  font-size: 16px;
  font-weight: 700;
  color: #dc2626;
}

.price-col small {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 2px;
}

.updated-col {
  font-size: 12px;
  color: var(--text-muted);
}

/* 同款比价展开面板 */
.offer-panel {
  margin-top: 10px;
  background: var(--surface-muted);
  border-radius: 8px;
  padding: 8px 12px;
}

.offer-row {
  display: grid;
  grid-template-columns: 1fr 90px 64px;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 13px;
}

.offer-row:last-child {
  border-bottom: none;
}

.offer-tag {
  margin-left: 6px;
  font-size: 11px;
  padding: 0 5px;
  border-radius: 4px;
  background: #fef3c7;
  color: #b45309;
}

.offer-tag.is-best {
  background: var(--success-soft);
  color: var(--success);
}

.offer-hint {
  margin-left: 8px;
  font-size: 11.5px;
  color: var(--text-muted);
}

/* 店铺卡片 */
.shop-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.shop-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  background: #fff;
}

.shop-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.shop-card h3 {
  margin: 0;
  font-size: 15px;
}

.shop-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin: 8px 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.shop-preview-list {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 8px;
}

.logs-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.log-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 12.5px;
}

.empty-tip {
  text-align: center;
  color: var(--text-muted);
  padding: 36px 0;
  font-size: 14px;
}

/* 弹窗 */
.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal[hidden] {
  display: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
}

.modal-dialog {
  position: relative;
  background: #fff;
  border-radius: 12px;
  width: min(620px, 92vw);
  max-height: 85vh;
  overflow: auto;
  padding: 20px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
}

.modal-sm {
  width: min(440px, 92vw);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  border: none;
  background: transparent;
  font-size: 20px;
  cursor: pointer;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 12px 0;
}

.signal-box {
  background: var(--surface-muted);
  border-radius: 8px;
  padding: 10px;
}

.signal-box span {
  display: block;
  font-size: 11.5px;
  color: var(--text-muted);
}

.signal-box strong {
  font-size: 15px;
}

.add-shop-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.add-shop-form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
}

.add-shop-form input,
.add-shop-form select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
}