:root {
  --bg: #f7f9fb;
  --surface: #ffffff;
  --surface-soft: #f1f5f7;
  --text: #172026;
  --muted: #65727c;
  --border: #dbe3e8;
  --border-strong: #b7c5ce;
  --accent: #087f8c;
  --accent-strong: #045f69;
  --accent-soft: #e5f5f7;
  --warning: #b7791f;
  --shadow: 0 16px 40px rgba(23, 32, 38, 0.08);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  letter-spacing: 0;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.brand-block h1 {
  margin: 0;
  font-size: 22px;
  line-height: 1.2;
  font-weight: 750;
}

.brand-block p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.toolbar,
.quick-filters,
.summary-strip,
.pager,
.panel-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.toolbar {
  flex-wrap: wrap;
  justify-content: flex-end;
}

.segmented {
  display: inline-flex;
  padding: 3px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.segment,
.text-button,
.icon-button,
.pager button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  line-height: 1.2;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s;
}

.segment:hover,
.text-button:hover,
.icon-button:hover {
  background: var(--surface-soft);
  border-color: var(--border-strong);
}

.segment.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-strong);
  font-weight: 600;
}

.icon-button {
  padding: 7px 10px;
}

.search-control {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.search-control input {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 220px;
}

.workspace {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 0;
  min-height: calc(100vh - 80px);
}

.table-region {
  display: flex;
  flex-direction: column;
  padding: 12px 16px;
  overflow: hidden;
}

.summary-strip {
  flex-wrap: wrap;
  padding: 8px 0 12px;
  font-size: 13px;
  color: var(--muted);
}

.summary-strip strong {
  margin-left: 4px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.quick-filters {
  flex-wrap: wrap;
  padding-bottom: 10px;
  font-size: 13px;
}

.quick-filters label {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
}

.quick-filters select {
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  min-width: 100px;
}

.table-wrap {
  flex: 1;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead {
  position: sticky;
  top: 0;
  z-index: 5;
}

th,
td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface-soft);
  font-weight: 600;
  white-space: nowrap;
}

.filter-row th {
  padding: 4px 6px;
  background: var(--surface);
  font-weight: 400;
}

.filter-input {
  width: 100%;
  padding: 5px 6px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 12px;
}

.sort-button {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

.sort-button:hover {
  color: var(--accent);
}

.empty-state {
  padding: 60px 20px;
  text-align: center;
  color: var(--muted);
}

.empty-state h2 {
  margin: 0 0 8px;
  font-size: 18px;
}

.pager {
  padding: 12px 0;
  justify-content: center;
}

.pager button {
  min-width: 80px;
}

.pager button:disabled {
  opacity: 0.5;
  cursor: default;
}

.side-panel {
  border-left: 1px solid var(--border);
  background: var(--surface);
  padding: 16px;
  overflow-y: auto;
  font-size: 13px;
}

.side-panel h2 {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 600;
}

.panel-title-row h2 {
  margin-bottom: 0;
}

.side-panel section + section {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  font-size: 12px;
  color: var(--accent-strong);
}

.filter-chip button {
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

.advanced-filter-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
}

.advanced-filter-row {
  display: grid;
  grid-template-columns: minmax(96px, 1fr) 82px minmax(82px, 1fr) minmax(76px, 0.8fr) minmax(76px, 0.8fr) 32px;
  gap: 6px;
  align-items: center;
}

.advanced-filter-row select,
.advanced-filter-row input,
.facet-control select,
.facet-control input,
.history-save-row input,
.history-sync input,
#columnSearch {
  width: 100%;
  min-width: 0;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 12px;
}

.advanced-remove {
  width: 32px;
  height: 32px;
  padding: 0;
}

.facet-control,
.history-save-row,
.history-sync {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.range-control {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 6px;
}

.facet-options {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  max-height: 190px;
  overflow-y: auto;
  margin-top: 10px;
}

.facet-option {
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-soft);
  color: var(--text);
  font-size: 12px;
  line-height: 1.2;
}

.facet-option:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.history-save-row {
  display: grid;
  grid-template-columns: 1fr auto;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 220px;
  overflow-y: auto;
  margin: 10px 0;
}

.history-item {
  display: grid;
  grid-template-columns: 1fr auto 26px;
  gap: 6px;
  align-items: center;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-soft);
}

.history-item span {
  color: var(--muted);
  font-size: 11px;
  white-space: nowrap;
}

.history-apply,
.history-delete {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
}

.history-apply {
  overflow: hidden;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-delete {
  width: 24px;
  height: 24px;
  color: var(--muted);
}

.history-sync p {
  min-height: 18px;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.column-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 300px;
  overflow-y: auto;
  margin-top: 8px;
}

.column-list label {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0;
  cursor: pointer;
}

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

.download-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.download-list a {
  display: block;
  padding: 6px 8px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--accent);
  text-decoration: none;
  font-size: 12px;
}

.download-list a:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
}

@media (max-width: 1024px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .side-panel {
    border-left: 0;
    border-top: 1px solid var(--border);
  }
}

@media (max-width: 720px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .toolbar {
    justify-content: flex-start;
    width: 100%;
  }

  .search-control {
    width: 100%;
  }

  .search-control input {
    min-width: 0;
    width: 100%;
  }

  .advanced-filter-row {
    grid-template-columns: 1fr 1fr;
  }

  .advanced-remove {
    width: 100%;
  }

  .range-control,
  .history-save-row,
  .history-item {
    grid-template-columns: 1fr;
  }
}