.datasets-panel h2 {
  
  margin: 16px 0 10px;
  font-size: 21px;
}

.datasets-list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
  font-size: 15px;
  line-height: 1.45;
}

.datasets-main {
  min-height: calc(100vh - 130px);
  background: var(--page-bg);
  font-family: var(--font-main);
  padding: 16px;
}

.datasets-search-row {
  max-width: 920px;
  margin: 0 auto 14px;
}

.datasets-search-label {
  display: none;
}

.datasets-search-input {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  font-size: 18px;
  font-family: var(--font-main);
  padding: 13px 16px;
}

.datasets-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 12px;
  max-width: 920px;
  margin: 0 auto;
}

.datasets-controls {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 16px;
  align-self: start;
}

.datasets-filter-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.datasets-filter-head h2 {
  margin: 0;
  font-size: 23px;
  font-family: var(--font-display);
}

.datasets-reset-btn {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-family: var(--font-main);
  padding: 4px 10px;
  cursor: pointer;
}

.datasets-filter-section {
  border-top: 1px solid var(--line);
  padding-top: 12px;
  margin-top: 12px;
}

.datasets-filter-section h3 {
  margin: 0 0 10px;
  font-size: 16px;
  font-family: var(--font-display);
}

.datasets-filter-option {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--text);
}

.datasets-location-input {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
  padding: 10px;
}

.datasets-control-group {
  margin-top: 14px;
}

.datasets-download-actions {
  display: grid;
  gap: 10px;
}

.datasets-download-btn {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 700;
  padding: 10px 14px;
  cursor: pointer;
}

.datasets-download-btn:hover,
.datasets-download-btn:focus-visible {
  border-color: var(--active);
  outline: none;
}

.datasets-download-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.datasets-grid-area {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 14px;
}

.datasets-results-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.datasets-results-count {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
}

.datasets-results-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.datasets-results-actions label {
  font-size: 13px;
  color: var(--muted);
}

.datasets-sort-select {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  padding: 6px 10px;
}

.datasets-results-list {
  display: grid;
  gap: 12px;
  margin-bottom: 16px;
}

.datasets-results-empty {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--muted);
}

.dataset-result-card {
  text-align: left;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 12px;
  cursor: pointer;
  display: grid;
  gap: 6px;
}

.dataset-result-card:hover,
.dataset-result-card:focus-visible {
  border-color: var(--gold);
  outline: none;
}

.dataset-result-card.is-active {
  border-color: var(--gold);
  box-shadow: inset 0 0 0 1px var(--gold);
}

.dataset-result-type {
  font-size: 12px;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--muted);
}

.dataset-result-title {
  font-size: 24px;
  font-family: var(--font-display);
  color: #2f74c7;
  text-decoration: underline;
}

.dataset-result-owner,
.dataset-result-category,
.dataset-result-meta {
  font-size: 14px;
  color: var(--text);
}

.dataset-result-rows {
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

.dataset-result-downloads {
  font-size: 13px;
  color: var(--muted);
}

.dataset-download-link {
  color: var(--gold);
  text-decoration: none;
  font-weight: 700;
  margin: 0 4px;
}

.dataset-download-link:hover,
.dataset-download-link:focus-visible {
  text-decoration: underline;
}

.dataset-download-divider {
  color: var(--muted);
}

.datasets-preview-panel {
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.datasets-preview-head h2 {
  margin: 0 0 12px;
  font-size: 20px;
  font-family: var(--font-display);
}

.datasets-grid-area .tab-content,
.datasets-grid-area #pipeline-workspace {
  height: auto;
}

.datasets-grid-area .spreadsheet-shell {
  min-height: 560px;
  height: 560px;
  padding: 0;
  align-items: stretch;
  justify-content: stretch;
  background: transparent;
}

.datasets-grid-area .spreadsheet {
  width: 100%;
  max-width: none;
  height: 100%;
  border-radius: 0;
}

.datasets-hidden-controls {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.datasets-hidden-preview {
  display: none;
}

.workspace {
  width: 100%;
  min-height: calc(100vh - 130px);
  padding: 0;
  overflow: hidden;
  display: none;
}

.workspace.active,
.workspace.pipeline-active {
  display: block;
}

.tab-content {
  display: none;
  height: auto;
}

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

#pipeline-workspace {
  min-height: calc(100vh - 170px);
}

.spreadsheet-shell {
  min-height: calc(100vh - 170px);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overflow: auto;
  background: #ffffff;
}

.spreadsheet {
  --cell-width: 84px;
  --cell-height: 26px;
  --header-height: 32px;
  --row-header-width: 48px;
  --col-count: 29;
  --row-count: 50;
  position: relative;
  width: min(1280px, calc(100% - 64px));
  height: min(760px, 78vh);
  background: #ffffff;
  border: 1px solid #d7d7d7;
  border-radius: 10px;
  box-shadow: 0 18px 35px rgba(0, 0, 0, 0.12);
  overflow: hidden;
}

.spreadsheet__viewport {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: var(--row-header-width) minmax(0, 1fr);
  grid-template-rows: var(--header-height) minmax(0, 1fr);
  overflow: auto;
  background: #ffffff;
}

.spreadsheet__corner {
  position: sticky;
  top: 0;
  left: 0;
  z-index: 4;
  width: var(--row-header-width);
  height: var(--header-height);
  grid-column: 1;
  grid-row: 1;
  background: linear-gradient(135deg, #2f2f2f, #1f1f1f);
  border-right: 1px solid #3a3a3a;
  border-bottom: 1px solid #3a3a3a;
}

.spreadsheet__col-headers {
  font-family: 'Poiret One';
  font-weight: 700;
  position: sticky;
  top: 0;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(var(--col-count), var(--cell-width));
  align-items: center;
  text-align: center;
  font-size: 14px;
  letter-spacing: 0.08em;
  background: linear-gradient(180deg, #313131 0%, #1f1f1f 100%);
  color: #f6f6f6;
  border-bottom: 1px solid #3a3a3a;
  overflow: hidden;
  height: var(--header-height);
  width: calc(var(--cell-width) * var(--col-count));
  grid-column: 2;
  grid-row: 1;
}

.spreadsheet__col-headers span {
  border-right: 1px solid #3a3a3a;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  user-select: none;
}

.spreadsheet__col-headers span:last-child {
  border-right: none;
}

.spreadsheet__row-headers {
  font-family: var(--font-display);
  position: sticky;
  left: 0;
  z-index: 2;
  display: grid;
  grid-auto-rows: var(--cell-height);
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  background: #232323;
  color: #f1f1f1;
  border-right: 1px solid #3a3a3a;
  width: var(--row-header-width);
  height: calc(var(--cell-height) * var(--row-count));
  grid-column: 1;
  grid-row: 2;
}

.spreadsheet__row-headers span {
  border-bottom: 1px solid #3a3a3a;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  user-select: none;
}

.spreadsheet__row-headers span:last-child {
  border-bottom: none;
}

.spreadsheet__cells {
  position: relative;
  width: calc(var(--cell-width) * var(--col-count));
  height: calc(var(--cell-height) * var(--row-count));
  grid-column: 2;
  grid-row: 2;
  background-color: #ffffff;
}

.spreadsheet__cells-content {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(var(--col-count), var(--cell-width));
}

.spreadsheet__cell {
  font-family: var(--font-main);
  display: flex;
  align-items: flex-start;
  padding: 4px 6px;
  font-size: 12px;
  line-height: 1.25;
  color: #1f1f1f;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
  overflow: hidden;
  border-right: 1px solid #dadada;
  border-bottom: 1px solid #dadada;
}

.spreadsheet__cell--merged-comment {
  align-items: flex-start;
  padding-top: 4px;
}

.spreadsheet__cell--truncated {
  cursor: pointer;
  background: #e6e6e6;
}

.spreadsheet__cell--truncated:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.cell-popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 90;
  padding: 16px;
}

.cell-popup-overlay.is-open {
  display: flex;
}

.cell-popup {
  width: min(820px, calc(100vw - 32px));
  max-height: min(80vh, 900px);
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
}

.cell-popup__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}

.cell-popup__header h2 {
  font-family: var(--font-display);
  letter-spacing: 0.02em;
  margin: 0;
  font-size: 16px;
}

.cell-popup__close {
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  border: 1px solid var(--line);
  background: transparent;
  color: inherit;
  font-weight: 700;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
}

.cell-popup__body {
  margin: 0;
  padding: 14px;
  overflow: auto;
  font-family: var(--font-main);
  font-size: 14px;
  line-height: 1.45;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.spreadsheet__col-resize-handle {
  position: absolute;
  top: 0;
  right: -4px;
  width: 8px;
  height: 100%;
  cursor: col-resize;
  z-index: 5;
}

.spreadsheet__row-resize-handle {
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 8px;
  cursor: row-resize;
  z-index: 5;
}

@media (max-width: 800px) {
  .spreadsheet-shell {
    align-items: flex-start;
    padding: 12px;
  }

  .spreadsheet {
    height: min(68vh, 520px);
    width: max(720px, 100%);
  }

  .datasets-layout {
    grid-template-columns: 1fr;
  }

  .datasets-controls {
    border-right: 0;
    border-bottom: 1px solid #bdbdbd;
    padding: 16px;
  }

  .datasets-control-group label {
    font-size: 24px;
  }

  .datasets-select {
    font-size: 22px;
    min-height: 52px;
  }

  .datasets-grid-area .spreadsheet-shell {
    height: auto;
    min-height: 56vh;
    padding: 12px;
  }

  .datasets-grid-area .spreadsheet {
    height: min(68vh, 520px);
    width: max(720px, 100%);
  }
}