: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,
.field-filter,
.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,
.field-filter button {
  min-height: 34px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  font-weight: 650;
}

.segment {
  border-color: transparent;
  padding: 0 12px;
  background: transparent;
}

.segment.active {
  background: var(--accent);
  color: #ffffff;
}

.text-button {
  padding: 0 12px;
}

.icon-button {
  width: 36px;
  padding: 0;
}

.search-control,
.quick-filters label,
.column-search {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
}

.search-control input,
.quick-filters select,
.field-filter input,
.field-filter select,
.column-search input,
#pageSize {
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font-size: 13px;
}

.search-control input {
  width: 240px;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 16px;
  padding: 16px;
}

.table-region,
.side-panel {
  min-width: 0;
}

.summary-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  margin-bottom: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.summary-strip div {
  padding: 12px 14px;
  border-right: 1px solid var(--border);
}

.summary-strip div:last-child {
  border-right: 0;
}

.summary-label {
  display: block;
  margin-bottom: 3px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
}

.summary-strip strong {
  font-size: 22px;
  line-height: 1;
}

.quick-filters {
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.quick-filters label {
  flex: 1 1 190px;
  justify-content: space-between;
}

.table-wrap {
  position: relative;
  height: calc(100vh - 252px);
  min-height: 420px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

table {
  width: max-content;
  min-width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

th,
td {
  max-width: 280px;
  min-width: 132px;
  padding: 8px 10px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
  font-size: 13px;
}

th:first-child,
td:first-child {
  position: sticky;
  left: 0;
  z-index: 5;
  min-width: 178px;
  background: inherit;
}

thead th {
  position: sticky;
  top: 0;
  z-index: 8;
  background: #eef4f6;
  color: #24323a;
  font-weight: 750;
}

thead tr.filter-row th {
  top: 38px;
  padding: 6px;
  background: #f8fbfc;
}

thead th:first-child {
  z-index: 12;
}

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

tbody tr:hover td {
  background: var(--accent-soft);
}

.sort-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 8px;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  font-weight: 750;
}

.filter-input {
  width: 100%;
  height: 30px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  outline: 0;
  background: var(--surface);
  font-size: 12px;
}

.empty-state {
  position: sticky;
  left: 0;
  display: grid;
  min-height: 240px;
  place-content: center;
  padding: 24px;
  text-align: center;
}

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

.empty-state p {
  margin: 0;
  color: var(--muted);
}

.pager {
  justify-content: center;
  margin-top: 10px;
}

.pager button {
  padding: 0 12px;
}

.pager button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.side-panel section {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.side-panel h2 {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.2;
}

.field-filter {
  align-items: stretch;
}

.field-filter select,
.field-filter input {
  height: 34px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.field-filter select {
  width: 42%;
}

.field-filter input {
  width: 36%;
}

.field-filter button {
  padding: 0 10px;
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  max-width: 100%;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--accent-soft);
  font-size: 12px;
}

.filter-chip button {
  width: 18px;
  height: 18px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  color: #ffffff;
  line-height: 18px;
}

.panel-title-row {
  justify-content: space-between;
}

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

.link-button {
  border: 0;
  background: transparent;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 750;
}

.column-search {
  justify-content: space-between;
  margin-bottom: 10px;
}

.column-list {
  display: grid;
  max-height: 42vh;
  overflow: auto;
  gap: 6px;
  padding-right: 4px;
}

.column-list label {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
  color: var(--text);
  font-size: 13px;
}

.column-list span {
  overflow-wrap: anywhere;
}

.download-list {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.download-list a {
  color: var(--accent-strong);
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 980px) {
  .topbar {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

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

  .search-control input {
    width: 180px;
  }

  .workspace {
    grid-template-columns: 1fr;
  }

  .table-wrap {
    height: 62vh;
  }

  .summary-strip {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
  }

  .summary-strip div:nth-child(2) {
    border-right: 0;
  }
}

@media (max-width: 640px) {
  .workspace {
    padding: 10px;
  }

  .summary-strip {
    grid-template-columns: 1fr;
  }

  .summary-strip div {
    border-right: 0;
  }

  .search-control,
  .search-control input,
  .text-button,
  .segmented {
    width: 100%;
  }

  .segment {
    flex: 1;
  }
}