.dataset-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.project-link-button {
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #ffffff;
  cursor: pointer;
  font: inherit;
  font-weight: 650;
  text-decoration: none;
}

.project-link-button:hover {
  background: var(--accent-dark);
}

.dataset-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.dataset-card {
  display: grid;
  gap: 16px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.card-title {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.card-title h2 {
  margin: 0;
  font-size: 18px;
}

.card-title p,
.card-title span {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.dataset-chart {
  display: grid;
  grid-template-columns: 72px auto minmax(0, 1fr);
  align-items: center;
  gap: 14px;
}

.pie-chart {
  width: 72px;
  height: 72px;
  flex: 0 0 72px;
  border-radius: 50%;
  border: 1px solid #d9e2ec;
  box-shadow: inset 0 0 0 10px #ffffff;
}

.chart-legend {
  min-width: 0;
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.legend-item i {
  width: 8px;
  height: 8px;
  border-radius: 999px;
}

.legend-train i {
  background: #1667c7;
}

.legend-val i {
  background: #16a34a;
}

.legend-test i {
  background: #f59e0b;
}

.split-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.split {
  display: grid;
  gap: 4px;
  padding: 10px;
  border-radius: 8px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
}

.split strong {
  font-size: 13px;
}

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

.dataset-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.view-button,
.download-button,
.train-button {
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  font-weight: 650;
  text-decoration: none;
}

.view-button {
  color: #334e68;
}

.download-button {
  color: #334e68;
}

.train-button {
  color: #334e68;
}

.view-button:hover,
.download-button:hover,
.train-button:hover {
  border-color: var(--line);
  background: #e6f0ff;
  color: #243b53;
}

.empty {
  padding: 32px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--muted);
  text-align: center;
}

.dataset-detail-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.dataset-detail-head h1 {
  margin: 0;
}

.dataset-detail-head p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.dataset-detail-main {
  grid-template-rows: auto auto auto minmax(0, 1fr);
  align-content: stretch;
  overflow: hidden;
}

.dataset-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.summary-card {
  display: grid;
  gap: 4px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.summary-card strong {
  font-size: 20px;
}

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

.dataset-tabs {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 0;
  min-height: 0;
  overflow: hidden;
}

.dataset-tab-list {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 1px solid var(--line);
}

.dataset-tab-buttons,
.dataset-tab-tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

.dataset-tab-buttons {
  min-width: 0;
  overflow-x: auto;
}

.dataset-tab-tools {
  flex: 0 0 auto;
  justify-content: flex-end;
  padding-bottom: 6px;
}

.dataset-tab-tools[hidden] {
  display: none;
}

.dataset-tab {
  height: 38px;
  min-width: 180px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 14px;
  border: 1px solid transparent;
  border-bottom: 0;
  border-radius: 8px 8px 0 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-weight: 650;
}

.dataset-tab:hover {
  background: #eef6ff;
  color: var(--text);
}

.dataset-tab.active {
  border-color: var(--line);
  background: #ffffff;
  color: var(--accent);
  transform: translateY(1px);
}

.dataset-tab-panel {
  min-height: 0;
  overflow: auto;
  padding-top: 12px;
}

.dataset-tab-panel[hidden] {
  display: none;
}

.dataset-tab-panel h2 {
  margin: 0;
  font-size: 18px;
}

.dataset-file-grid {
  column-count: 4;
  column-gap: 12px;
}

.dataset-file-card {
  display: grid;
  gap: 8px;
  break-inside: avoid;
  margin: 0 0 12px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.dataset-file-card img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 6px;
  background: #f1f5f9;
  cursor: zoom-in;
}

.dataset-file-card span {
  min-width: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.classes-dashboard {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr);
  gap: 14px;
}

.classes-panel {
  display: grid;
  gap: 14px;
  padding-bottom: 12px;
}

.classes-card {
  display: grid;
  gap: 10px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.classes-card-head h2 {
  margin: 0;
  font-size: 18px;
}

.classes-card-head p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.class-vertical-chart {
  min-height: 204px;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 10px;
}

.class-scale {
  height: 170px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-top: 2px;
  color: var(--muted);
  font-size: 11px;
  text-align: right;
}

.class-plot {
  position: relative;
  min-width: 0;
  height: 194px;
  display: flex;
  align-items: start;
  gap: 14px;
  padding: 0 8px;
  overflow-x: auto;
}

.class-plot::before {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  top: 0;
  height: 170px;
  border-left: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(to bottom, #e6eef8 1px, transparent 1px) 0 0 / 100% 42.5px;
  pointer-events: none;
}

.class-column {
  position: relative;
  z-index: 1;
  width: 64px;
  min-width: 64px;
  height: 100%;
  display: grid;
  grid-template-rows: 170px 18px;
  align-items: start;
  justify-items: center;
  gap: 5px;
}

.class-column-bar {
  width: 34px;
  height: 170px;
  display: flex;
  align-items: end;
}

.class-column-bar span {
  width: 100%;
  min-height: 2px;
  display: block;
  border-radius: 6px 6px 0 0;
  background: var(--accent);
}

.class-column em {
  max-width: 64px;
  overflow: hidden;
  color: #334e68;
  font-size: 12px;
  font-style: normal;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.classes-table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.classes-table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  font-size: 13px;
}

.classes-table th,
.classes-table td {
  padding: 10px 12px;
  border-bottom: 1px solid #edf2f7;
  text-align: left;
}

.classes-table th {
  background: #f8fafc;
  color: #334e68;
  font-weight: 650;
}

.classes-table td {
  color: var(--text);
}

.classes-table tfoot td {
  background: #f8fafc;
  color: #334e68;
  font-weight: 650;
}

.image-preview-dialog {
  width: min(1180px, calc(100vw - 32px));
  max-width: calc(100vw - 32px);
  max-height: calc(100dvh - 32px);
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 24px 72px rgba(15, 23, 42, .26);
}

.image-preview-dialog::backdrop {
  background: rgba(15, 23, 42, .5);
}

.image-preview-dialog figure {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 14px;
}

.image-preview-dialog img {
  max-width: 100%;
  max-height: calc(100dvh - 96px);
  display: block;
  margin: 0 auto;
  object-fit: contain;
}

.image-preview-dialog figcaption {
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.image-preview-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  color: #334e68;
  font-size: 14px;
  line-height: 1;
  text-align: center;
}

.dataset-pager {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.dataset-pager button {
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  color: #334e68;
  cursor: pointer;
  font: inherit;
}

.dataset-pager button:hover:not(:disabled) {
  background: #e6f0ff;
  color: #243b53;
}

.dataset-pager button:disabled {
  opacity: .45;
  cursor: not-allowed;
}

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

.page-size-control {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

.page-size-control select {
  width: 74px;
  height: 32px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  color: var(--text);
  font: inherit;
}

.dataset-dialog {
  width: min(440px, calc(100vw - 32px));
  padding: 0;
  border: 0;
  border-radius: 8px;
  box-shadow: 0 24px 64px rgba(31, 41, 51, .26);
}

.dataset-dialog::backdrop {
  background: rgba(15, 23, 42, .38);
}

.dataset-dialog form {
  display: grid;
  gap: 14px;
  padding: 18px;
}

.dataset-dialog-head,
.dataset-dialog-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.dataset-dialog h2 {
  margin: 0;
  font-size: 18px;
}

.dataset-dialog label {
  display: grid;
  gap: 6px;
  color: #52606d;
  font-size: 13px;
}

.dataset-dialog input,
.dataset-dialog select {
  width: 100%;
  height: 36px;
  padding: 0 10px;
  border: 1px solid #d9e2ec;
  border-radius: 6px;
  background: #ffffff;
  font: inherit;
}

.dataset-dialog button {
  height: 34px;
  padding: 0 12px;
  border: 1px solid #d9e2ec;
  border-radius: 6px;
  background: #ffffff;
  color: #334e68;
  cursor: pointer;
}

.dataset-dialog button[type="submit"] {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.dataset-dialog-close {
  width: 32px;
  padding: 0;
  font-size: 20px;
  line-height: 1;
}

@media (max-width: 720px) {
  .dataset-head {
    display: grid;
    align-items: stretch;
  }

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

  .dataset-chart {
    grid-template-columns: 1fr;
  }

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

  .dataset-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .classes-dashboard {
    grid-template-columns: 1fr;
  }

  .dataset-file-grid {
    column-count: 1;
  }

  .dataset-tab-list {
    display: grid;
    align-items: stretch;
  }

  .dataset-tab-buttons {
    overflow-x: auto;
  }

  .dataset-tab-tools {
    justify-content: flex-start;
    padding: 8px 0;
  }
}

@media (min-width: 721px) and (max-width: 1080px) {
  .dataset-grid {
    column-count: 2;
  }

  .dataset-file-grid {
    column-count: 2;
  }
}