:root {
  color-scheme: dark;
  --ds-bg: #090a10;
  --ds-panel: #14151f;
  --ds-panel-2: #1b1d29;
  --ds-border: rgba(207, 183, 255, .18);
  --ds-border-strong: rgba(207, 183, 255, .42);
  --ds-accent: #b991ff;
  --ds-accent-2: #7748d6;
  --ds-text: #f7f4ff;
  --ds-muted: rgba(247,244,255,.62);
  --ds-danger: #ff7894;
  --ds-success: #69d8aa;
}

* { box-sizing: border-box; }

body.data-studio-page {
  min-height: 100vh;
  overflow-x: hidden;
  margin: 0;
  background:
    radial-gradient(circle at 12% 8%, rgba(97,53,165,.18), transparent 32%),
    linear-gradient(180deg, #08090f 0%, #0b0c13 100%);
}

button, input, select, textarea { font: inherit; }
button { cursor: pointer; }

.visually-hidden-input {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(1px,1px,1px,1px) !important;
  white-space: nowrap !important;
}

.hidden { display: none !important; }

.data-main {
  width: min(1760px, calc(100% - 28px));
  min-height: calc(100vh - 150px);
  margin: 0 auto;
  padding: 112px 0 72px;
}

.data-hero {
  display: flex;
  gap: 24px;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 22px;
  padding: 24px 26px;
  border: 1px solid var(--ds-border);
  border-radius: 26px;
  background:
    radial-gradient(circle at 15% 20%, rgba(145,88,236,.2), transparent 34%),
    linear-gradient(150deg, rgba(28,28,41,.98), rgba(14,15,23,.98));
  box-shadow: 0 24px 80px rgba(0,0,0,.35);
}

.data-kicker {
  margin: 0;
  color: #d2b9ff;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.data-hero h1 {
  margin: 7px 0 8px;
  font-size: clamp(38px, 5vw, 66px);
  line-height: .95;
  letter-spacing: -.04em;
}

.data-hero p:last-child {
  max-width: 760px;
  margin: 0;
  color: var(--ds-muted);
  font-size: 17px;
  line-height: 1.55;
}

.hero-actions,
.preview-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.primary-action,
.secondary-action,
.text-action,
.small-action,
.preview-actions button,
.panel-tab,
.sample-grid button,
.chart-type-button {
  min-height: 42px;
  border-radius: 12px;
  font-weight: 800;
  transition: transform .16s ease, border-color .16s ease, background .16s ease, opacity .16s ease;
}

.primary-action {
  border: 1px solid rgba(229,216,255,.46);
  background: linear-gradient(145deg, #8d59e8, #6231ba);
  color: #fff;
  box-shadow: inset 0 1px rgba(255,255,255,.14), 0 10px 30px rgba(92,49,170,.28);
  padding: 0 18px;
}

.secondary-action,
.preview-actions button,
.small-action {
  border: 1px solid var(--ds-border-strong);
  background: rgba(255,255,255,.045);
  color: var(--ds-text);
  padding: 0 16px;
}

.text-action {
  border: 0;
  background: transparent;
  color: #d5bdff;
  padding: 0 10px;
}

.primary-action:hover,
.secondary-action:hover,
.preview-actions button:hover,
.small-action:hover,
.text-action:hover {
  transform: translateY(-1px);
  border-color: rgba(217,197,255,.72);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid #d7beff;
  outline-offset: 2px;
}

button:disabled {
  cursor: not-allowed;
  opacity: .42;
  transform: none !important;
}

.full-width { width: 100%; }

.data-workspace {
  display: grid;
  grid-template-columns: minmax(300px, 370px) minmax(520px, 1fr) minmax(240px, 290px);
  gap: 16px;
  align-items: stretch;
}

.control-panel,
.preview-card,
.export-panel,
.data-table-section {
  min-width: 0;
  border: 1px solid var(--ds-border);
  border-radius: 22px;
  background: linear-gradient(155deg, rgba(24,25,36,.98), rgba(13,14,21,.98));
  box-shadow: 0 20px 64px rgba(0,0,0,.3);
}

.control-panel {
  min-height: 720px;
  overflow: hidden;
}

.panel-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 8px;
  gap: 6px;
  border-bottom: 1px solid var(--ds-border);
  background: rgba(0,0,0,.14);
}

.panel-tab {
  min-height: 38px;
  padding: 0 7px;
  border: 1px solid transparent;
  background: transparent;
  color: rgba(255,255,255,.55);
  font-size: 12px;
}

.panel-tab.active {
  border-color: rgba(201,172,255,.35);
  background: rgba(121,71,208,.24);
  color: #fff;
}

.panel-scroll {
  height: 680px;
  overflow: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(191,153,255,.35) transparent;
}

.panel-page {
  display: none;
  padding: 18px;
}

.panel-page.active { display: block; }

.data-drop-zone {
  display: grid;
  place-items: center;
  gap: 6px;
  min-height: 132px;
  margin-bottom: 20px;
  padding: 18px;
  border: 1px dashed rgba(200,169,255,.48);
  border-radius: 16px;
  background: rgba(116,68,202,.08);
  text-align: center;
}

.data-drop-zone.dragover {
  border-color: #d7c0ff;
  background: rgba(136,80,230,.2);
}

.data-drop-zone strong { font-size: 18px; }
.data-drop-zone span { color: #d3bdff; font-weight: 800; }
.data-drop-zone small { color: var(--ds-muted); }

.section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 10px;
}

.section-heading h2,
.panel-section h2 {
  margin: 0;
  font-size: 18px;
}

.section-heading p,
.panel-section p {
  margin: 4px 0 0;
  color: var(--ds-muted);
  font-size: 13px;
  line-height: 1.45;
}

.compact-heading { margin-bottom: 8px; }

#data-text-input {
  width: 100%;
  min-height: 176px;
  resize: vertical;
  border: 1px solid var(--ds-border);
  border-radius: 14px;
  background: rgba(4,5,9,.52);
  color: #f8f4ff;
  padding: 13px;
  line-height: 1.45;
  tab-size: 2;
}

.sample-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 7px;
  margin: 12px 0 16px;
}

.sample-grid button {
  min-height: 38px;
  padding: 0 6px;
  border: 1px solid var(--ds-border);
  background: rgba(255,255,255,.035);
  color: #e9ddff;
  font-size: 12px;
}

.data-summary-card {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 8px;
  margin-bottom: 18px;
}

.data-summary-card > div {
  min-width: 0;
  padding: 11px;
  border: 1px solid var(--ds-border);
  border-radius: 12px;
  background: rgba(255,255,255,.025);
}

.data-summary-card span,
.column-type {
  display: block;
  color: var(--ds-muted);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.data-summary-card strong {
  display: block;
  margin-top: 5px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
}

.column-list { display: grid; gap: 8px; }
.column-card {
  display: grid;
  grid-template-columns: 36px minmax(0,1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--ds-border);
  border-radius: 12px;
  background: rgba(255,255,255,.025);
}
.column-icon {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(133,78,227,.22);
  color: #dac7ff;
  font-weight: 900;
  font-size: 12px;
}
.column-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 800;
}
.column-values {
  color: var(--ds-muted);
  font-size: 11px;
  text-align: right;
}

.empty-panel-note {
  padding: 18px;
  border: 1px dashed var(--ds-border);
  border-radius: 12px;
  color: var(--ds-muted);
  text-align: center;
}

.chart-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 9px;
}

.chart-type-button {
  display: grid;
  grid-template-columns: 46px minmax(0,1fr);
  gap: 10px;
  align-items: center;
  min-height: 72px;
  padding: 9px;
  border: 1px solid var(--ds-border);
  background: rgba(255,255,255,.025);
  color: #fff;
  text-align: left;
}

.chart-type-button.active {
  border-color: rgba(210,184,255,.72);
  background: rgba(117,66,205,.24);
  box-shadow: inset 0 0 0 1px rgba(226,211,255,.08);
}

.chart-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: linear-gradient(145deg, rgba(126,73,216,.85), rgba(66,36,118,.95));
  color: #fff;
  font-size: 16px;
  font-weight: 950;
}

.chart-type-copy strong { display: block; font-size: 13px; }
.chart-type-copy span { display: block; margin-top: 3px; color: var(--ds-muted); font-size: 10px; line-height: 1.25; }

.mapping-controls,
.control-section {
  display: grid;
  gap: 8px;
}

.mapping-controls { margin-bottom: 14px; }
.control-section {
  margin-bottom: 14px;
  padding: 13px;
  border: 1px solid var(--ds-border);
  border-radius: 13px;
  background: rgba(255,255,255,.022);
}

.mapping-field {
  display: grid;
  gap: 6px;
  padding: 11px;
  border: 1px solid var(--ds-border);
  border-radius: 12px;
  background: rgba(255,255,255,.02);
}

.mapping-field-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.mapping-field-head strong { font-size: 13px; }
.mapping-field-head span { color: var(--ds-muted); font-size: 10px; text-transform: uppercase; letter-spacing: .08em; }
.mapping-field small { color: var(--ds-muted); line-height: 1.35; }

label {
  color: rgba(255,255,255,.76);
  font-size: 12px;
  font-weight: 800;
}

input[type="text"],
input[type="number"],
input[type="search"],
select,
textarea {
  width: 100%;
  border: 1px solid var(--ds-border);
  border-radius: 10px;
  background: #0c0d14;
  color: #fff;
  min-height: 40px;
  padding: 8px 10px;
}

input[type="color"] {
  width: 100%;
  height: 42px;
  border: 1px solid var(--ds-border);
  border-radius: 10px;
  padding: 4px;
  background: #0c0d14;
}

.two-column-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 10px;
}
.two-column-controls label { display: grid; gap: 6px; }

.range-control label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.range-control output { color: #d6c1ff; }
input[type="range"] { width: 100%; accent-color: #9b69ef; }

.toggle-list label {
  display: flex;
  min-height: 34px;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.toggle-list input { accent-color: #9d69ef; }

.preview-card {
  min-width: 0;
  min-height: 720px;
  overflow: hidden;
}

.preview-toolbar,
.preview-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 15px;
  border-bottom: 1px solid var(--ds-border);
  background: rgba(0,0,0,.12);
}
.preview-footer {
  border-top: 1px solid var(--ds-border);
  border-bottom: 0;
  color: var(--ds-muted);
  font-size: 12px;
}
.preview-title { min-width: 0; }
.preview-title strong,
.preview-title span { display: block; }
.preview-title strong { font-size: 15px; }
.preview-title span {
  margin-top: 3px;
  max-width: 680px;
  color: var(--ds-muted);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.preview-actions button {
  min-height: 36px;
  padding: 0 11px;
  font-size: 12px;
}

.chart-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 646px;
  height: 646px;
  overflow: hidden;
  background:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px),
    #0a0b11;
  background-size: 24px 24px;
}

.chart-empty {
  display: grid;
  place-items: center;
  gap: 8px;
  color: var(--ds-muted);
  text-align: center;
}
.chart-empty strong { color: #fff; font-size: 20px; }
.empty-chart-mark {
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  margin-bottom: 8px;
  border: 1px solid var(--ds-border-strong);
  border-radius: 26px;
  background: linear-gradient(145deg, rgba(125,72,215,.82), rgba(50,29,91,.96));
  color: #fff;
  font-size: 20px;
  font-weight: 950;
  letter-spacing: -.04em;
}

.chart-scroll {
  width: 100%;
  height: 100%;
  overflow: auto;
  overscroll-behavior: contain;
  display: grid;
  place-items: start center;
  padding: 22px;
}
.chart-scroll.fit-chart { place-items: center; overflow: auto; }
.chart-scroll.overflow-x { justify-items: start; }
.chart-scroll.overflow-y { align-items: start; }
.chart-mount {
  flex: 0 0 auto;
  transform-origin: center center;
  box-shadow: 0 22px 64px rgba(0,0,0,.42);
}
.chart-mount svg { display: block; }

.chart-tooltip {
  position: absolute;
  z-index: 10;
  pointer-events: none;
  max-width: 260px;
  padding: 10px 12px;
  border: 1px solid rgba(220,201,255,.4);
  border-radius: 10px;
  background: rgba(12,12,19,.96);
  box-shadow: 0 14px 40px rgba(0,0,0,.45);
  color: #fff;
  font-size: 12px;
  line-height: 1.45;
}
.chart-tooltip strong { display: block; margin-bottom: 3px; color: #dac6ff; }

.export-panel {
  min-height: 720px;
  padding: 17px;
}
.panel-section {
  padding-bottom: 17px;
  margin-bottom: 17px;
  border-bottom: 1px solid var(--ds-border);
}
.panel-section:last-child { border-bottom: 0; margin-bottom: 0; }
.panel-section button + button { margin-top: 8px; }
.privacy-note {
  padding: 14px;
  border: 1px solid rgba(102,216,169,.24);
  border-radius: 13px;
  background: rgba(63,171,127,.07);
}
.privacy-note h2 { color: #8fe0bd; }

.data-table-section {
  margin-top: 16px;
  padding: 20px;
}
.table-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}
.table-heading h2 { margin: 5px 0 0; font-size: 28px; }
.table-wrap {
  max-height: 520px;
  overflow: auto;
  border: 1px solid var(--ds-border);
  border-radius: 14px;
}
#data-preview-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
#data-preview-table th,
#data-preview-table td {
  min-width: 130px;
  max-width: 360px;
  padding: 9px 11px;
  border-right: 1px solid var(--ds-border);
  border-bottom: 1px solid var(--ds-border);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: left;
}
#data-preview-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #242638;
  color: #eadfff;
}
#data-preview-table tr:nth-child(even) td { background: rgba(255,255,255,.018); }
#table-note { margin: 10px 0 0; color: var(--ds-muted); font-size: 12px; }

.preview-card:fullscreen {
  width: 100vw;
  height: 100vh;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  border-radius: 0;
  border: 0;
  background: #0a0b11;
  contain: none;
}
.preview-card:fullscreen .chart-stage {
  height: auto;
  min-height: 0;
}
.preview-card:fullscreen .chart-scroll {
  padding: 18px;
}

@media (max-width: 1260px) {
  .data-workspace {
    grid-template-columns: 330px minmax(0,1fr);
  }
  .export-panel {
    grid-column: 1 / -1;
    min-height: 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 16px;
  }
  .export-panel .panel-section {
    margin: 0;
    padding: 0;
    border: 0;
  }
}

@media (max-width: 900px) {
  .data-main {
    width: min(100% - 16px, 1760px);
    padding-top: 88px;
  }
  .data-hero {
    align-items: stretch;
    flex-direction: column;
    padding: 19px;
  }
  .hero-actions { justify-content: flex-start; }
  .data-workspace { grid-template-columns: 1fr; }
  .control-panel,
  .preview-card,
  .export-panel { min-height: 0; }
  .panel-scroll { height: auto; max-height: none; }
  .preview-card { order: -1; }
  .chart-stage { height: clamp(430px, 58vh, 560px); min-height: 430px; }
  .export-panel {
    grid-column: auto;
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .data-main { padding-bottom: 46px; }
  .data-hero { border-radius: 18px; }
  .data-hero h1 { font-size: 42px; }
  .hero-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .hero-actions .primary-action { grid-column: 1 / -1; }
  .control-panel,
  .preview-card,
  .export-panel,
  .data-table-section { border-radius: 16px; }
  .panel-tabs { overflow-x: auto; grid-template-columns: repeat(4, minmax(72px,1fr)); }
  .chart-gallery { grid-template-columns: 1fr; }
  .chart-type-button { min-height: 64px; }
  .sample-grid { grid-template-columns: repeat(2, 1fr); }
  .preview-toolbar,
  .preview-footer { align-items: flex-start; flex-direction: column; }
  .preview-actions { justify-content: flex-start; }
  .chart-stage { height: clamp(380px, 56vh, 500px); min-height: 380px; }
  .chart-scroll { padding: 10px; }
  .two-column-controls { grid-template-columns: 1fr; }
  .data-table-section { padding: 14px; }
}


/* V138 production polish */
.chart-mount svg text { text-rendering: geometricPrecision; }
.chart-mount svg path,
.chart-mount svg rect,
.chart-mount svg circle,
.chart-mount svg line { vector-effect: non-scaling-stroke; }
.preview-card { contain: layout paint; }
.panel-scroll, .chart-scroll, .table-wrap { scrollbar-gutter: stable; }
@media (prefers-reduced-motion: reduce) {
  .primary-action, .secondary-action, .text-action, .small-action,
  .preview-actions button, .panel-tab, .sample-grid button, .chart-type-button { transition: none; }
}


/* V141 interactive zoom and fullscreen canvas */
.zoom-controls {
  display: inline-flex;
  align-items: stretch;
  gap: 0;
  border: 1px solid var(--ds-border-strong);
  border-radius: 12px;
  overflow: hidden;
  background: rgba(255,255,255,.035);
}
.preview-actions .zoom-controls button {
  min-width: 38px;
  min-height: 34px;
  padding: 0 10px;
  border: 0;
  border-radius: 0;
  background: transparent;
}
.preview-actions .zoom-controls button + button {
  border-left: 1px solid var(--ds-border);
}
.preview-actions #zoom-reset-button {
  min-width: 62px;
  font-variant-numeric: tabular-nums;
}
.chart-scroll {
  touch-action: pan-x pan-y;
}
.chart-scroll.has-chart {
  cursor: default;
}
.preview-card:fullscreen .preview-toolbar,
.preview-card:fullscreen .preview-footer {
  flex: 0 0 auto;
}
@media (max-width: 620px) {
  .preview-actions { width: 100%; }
  .zoom-controls { order: -1; }
  .preview-actions #toggle-table-button { display: none; }
}


/* V143 advanced chart pack */
.chart-type-button[data-chart-type="sankey"],
.chart-type-button[data-chart-type="alluvial"],
.chart-type-button[data-chart-type="chord"],
.chart-type-button[data-chart-type="gantt"],
.chart-type-button[data-chart-type="sunburst"],
.chart-type-button[data-chart-type="circle-packing"],
.chart-type-button[data-chart-type="beeswarm"],
.chart-type-button[data-chart-type="violin"],
.chart-type-button[data-chart-type="streamgraph"],
.chart-type-button[data-chart-type="parallel-coordinates"],
.chart-type-button[data-chart-type="dendrogram"],
.chart-type-button[data-chart-type="hexbin"] { position: relative; }
.chart-type-button[data-chart-type="sankey"]::after,
.chart-type-button[data-chart-type="alluvial"]::after,
.chart-type-button[data-chart-type="chord"]::after,
.chart-type-button[data-chart-type="gantt"]::after,
.chart-type-button[data-chart-type="sunburst"]::after,
.chart-type-button[data-chart-type="circle-packing"]::after,
.chart-type-button[data-chart-type="beeswarm"]::after,
.chart-type-button[data-chart-type="violin"]::after,
.chart-type-button[data-chart-type="streamgraph"]::after,
.chart-type-button[data-chart-type="parallel-coordinates"]::after,
.chart-type-button[data-chart-type="dendrogram"]::after,
.chart-type-button[data-chart-type="hexbin"]::after {
  content: "ADV";
  position: absolute;
  top: 7px;
  right: 7px;
  padding: 2px 5px;
  border: 1px solid rgba(199,174,255,.35);
  border-radius: 999px;
  background: rgba(114,70,194,.24);
  color: #dccaff;
  font-size: 8px;
  font-weight: 900;
  letter-spacing: .06em;
}


/* V145 chart library navigation */
.chart-library-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(150px, .85fr) auto;
  gap: 10px;
  align-items: end;
  margin: 0 0 14px;
  padding: 12px;
  border: 1px solid rgba(185,145,255,.2);
  border-radius: 14px;
  background: rgba(18,18,29,.72);
}
.chart-library-toolbar label { margin: 0; }
.chart-library-toolbar label > span {
  display: block;
  margin-bottom: 6px;
  color: rgba(245,243,251,.66);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.chart-library-toolbar input,
.chart-library-toolbar select { width: 100%; min-width: 0; }
.chart-library-count {
  min-width: 72px;
  padding: 11px 8px;
  color: #d9c2ff;
  font-size: .78rem;
  text-align: right;
  white-space: nowrap;
}
.chart-type-button[hidden] { display: none !important; }
@media (max-width: 700px) {
  .chart-library-toolbar { grid-template-columns: 1fr 1fr; }
  .chart-search-field { grid-column: 1 / -1; }
  .chart-library-count { align-self: center; }
}

/* V161.2 editable dataset and column-filter controls */
.ds-filter-controls select { width: 100%; margin-bottom: 10px; }
.data-table-actions { display: flex; align-items: center; justify-content: flex-end; gap: 10px; flex-wrap: wrap; }
#data-preview-table .ds-data-editable { min-width: 110px; cursor: text; outline: none; transition: background .15s ease, box-shadow .15s ease; }
#data-preview-table .ds-data-editable:hover { background: rgba(185,145,255,.07); }
#data-preview-table .ds-data-editable:focus { background: rgba(185,145,255,.13); box-shadow: inset 0 0 0 2px rgba(185,145,255,.55); }
#data-preview-table .ds-data-row-number { position: sticky; left: 0; z-index: 3; min-width: 56px; width: 56px; background: #171824; text-align: center; }
#data-preview-table thead .ds-data-row-number { z-index: 5; }
#data-preview-table .ds-data-row-actions { position: sticky; right: 0; z-index: 3; min-width: 86px; white-space: nowrap; background: #171824; }
#data-preview-table .ds-data-row-actions button { width: 32px; height: 32px; margin: 0 3px; border: 1px solid rgba(185,145,255,.35); border-radius: 8px; background: rgba(185,145,255,.08); color: #f5f3fb; cursor: pointer; }
#data-preview-table .ds-data-row-actions button:hover { background: rgba(185,145,255,.2); }
#data-preview-table .ds-data-actions-heading { position: sticky; right: 0; z-index: 5; background: #24263a; }
@media (max-width: 760px) {
  .data-table-actions { width: 100%; justify-content: stretch; }
  .data-table-actions button { flex: 1 1 auto; }
}


/* v191: JS-assisted dropdown open state, stable on mouse + touch. */
.site-header, .chess-header { overflow: visible !important; }
.nav-dropdown.is-open > .nav-dropdown-menu { display: block !important; opacity: 1 !important; visibility: visible !important; pointer-events: auto !important; }
.nav-dropdown.is-open > .nav-dropbtn { background: rgba(255,255,255,0.12) !important; color: #fff !important; }
.nav-tools-menu { min-width: 220px; }
@media (hover: none), (pointer: coarse), (max-width: 760px) {
  .nav-dropdown:hover > .nav-dropdown-menu { display: none; }
  .nav-dropdown.is-open > .nav-dropdown-menu { display: block !important; }
}