:root{--stats-panel:rgba(14,24,44,.9);--stats-panel2:rgba(20,35,60,.9);--stats-border:rgba(163,186,235,.22);--stats-text:#e8f0ff;--stats-muted:#a3b5d4;--stats-accent:#63b2ff;--stats-accent2:#7ef0cc;--stats-danger:#ef7185}.statistics-page{margin:0;min-height:100vh;background:radial-gradient(circle at 10% 0,#18376855,transparent 35%),linear-gradient(155deg,#061023,#0b1730);color:var(--stats-text);font-family:Inter,system-ui,sans-serif}.statistics-shell{display:grid;gap:18px;margin-bottom:36px}.stats-hero,.stats-panel,.privacy-note{border:1px solid var(--stats-border);background:var(--stats-panel);box-shadow:0 20px 55px #02091866;border-radius:20px}.stats-hero{display:flex;justify-content:space-between;gap:28px;align-items:center;padding:36px;margin:0}.stats-hero-crumbs{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}.stats-hero-links{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.stats-hero .back-link{appearance:none;-webkit-appearance:none;background:rgba(158,185,236,.08);color:var(--stats-text);border:1px solid rgba(158,185,236,.26)}.stats-hero .back-link:hover{background:rgba(158,185,236,.14)}.stats-hero h1{font-size:clamp(2rem,5vw,4rem);margin:10px 0}.stats-hero p{max-width:780px;color:var(--stats-muted);font-size:1.08rem}.session-card{min-width:230px;display:grid;gap:8px;padding:18px;border-radius:15px;background:#071329;border:1px solid var(--stats-border);box-sizing:border-box}.privacy-note{display:flex;gap:12px;padding:14px 18px;margin-bottom:0;color:var(--stats-muted)}.privacy-note strong{color:var(--stats-accent2);white-space:nowrap}.stats-panel{padding:24px;margin-bottom:0}.panel-heading,.workspace-head>div,.workspace-head,.results-head,.preview-meta{display:flex;align-items:center;justify-content:space-between;gap:14px}.panel-heading>div,.workspace-head>div{display:flex;align-items:center;gap:12px}.panel-heading h2,.workspace-head h2{margin:0}.step{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--stats-accent),var(--stats-accent2));color:#062034;font-weight:900}.upload-grid,.two-column{display:grid;grid-template-columns:1.2fr 1fr;gap:20px;margin-top:18px}.drop-zone{min-height:190px;border:2px dashed #5373a4;border-radius:16px;display:grid;place-content:center;text-align:center;gap:10px;padding:24px;cursor:pointer;background:#08152b}.drop-zone.drag{border-color:var(--stats-accent2);background:#102a3b}.drop-zone input{max-width:100%}.import-options,.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.import-options button{grid-column:1/-1}label{display:grid;gap:6px;color:var(--stats-muted)}input,select,textarea,button{font:inherit;border:1px solid var(--stats-border);border-radius:10px;padding:10px 12px}input,select,textarea{background:#071329;color:var(--stats-text);width:100%}textarea{resize:vertical;font-family:ui-monospace,monospace}button{background:linear-gradient(135deg,var(--stats-accent),var(--stats-accent2));color:#052036;font-weight:800;cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}.ghost{background:#162642;color:var(--stats-text)}.danger{color:#fff;background:var(--stats-danger)}.hidden{display:none!important}.status-line{min-height:24px;margin-top:12px;color:var(--stats-muted)}.preview-panel{margin-top:18px}.table-scroll{overflow:auto;border:1px solid var(--stats-border);border-radius:12px;margin:12px 0;max-height:480px}table{border-collapse:collapse;width:100%;font-size:.88rem}th,td{padding:9px 11px;border-bottom:1px solid var(--stats-border);text-align:left;white-space:nowrap}th{position:sticky;top:0;background:#14243f;z-index:1}.samples{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px;margin-top:15px}.sample-card{display:grid;gap:8px;padding:12px;border:1px solid var(--stats-border);border-radius:12px;background:#0a172d}.sample-card strong{font-size:1rem}.sample-card span{color:var(--stats-muted);font-size:.86rem}.sample-card button,.sample-card a{justify-self:start}.sample-link{padding:8px 10px;border:1px solid var(--stats-border);border-radius:9px;color:var(--stats-accent);text-decoration:none}.tabs{display:flex;gap:7px;overflow:auto;padding:4px;margin-bottom:12px}.tabs button{white-space:nowrap;background:#111f39;color:var(--stats-muted)}.tabs button.active{color:#052036;background:linear-gradient(135deg,var(--stats-accent),var(--stats-accent2))}.tab-panel{display:none}.tab-panel.active{display:block}.toolbar,.pager,.actions-row,.workspace-actions{display:flex;align-items:end;gap:10px;flex-wrap:wrap}.toolbar label{min-width:150px}.pager{justify-content:center}.data-table-wrap{min-height:260px}.variable-list{display:grid;gap:10px}.variable-card{display:grid;gap:10px;padding:13px;border:1px solid var(--stats-border);border-radius:12px;background:#0a172d}.variable-card .variable-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.variable-card textarea{min-height:88px}.variable-card .value-labels{grid-column:1/-1}.variable-card .variable-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.variable-name strong,.variable-name small{display:block}.muted,.variable-name small{color:var(--stats-muted)}.output-box{min-height:220px;max-height:420px;overflow:auto;padding:14px;border:1px solid var(--stats-border);border-radius:12px;background:#061022;color:#c9daf4;white-space:pre-wrap}.recommendations,.results-list{display:grid;gap:12px;margin-top:16px}.recommendation,.result-card,.job-panel,.report-builder{padding:16px;border:1px solid var(--stats-border);border-radius:14px;background:var(--stats-panel2)}.job-progress{height:9px;border-radius:99px;background:#071329;overflow:hidden;margin:10px 0}.job-progress span{display:block;height:100%;background:linear-gradient(90deg,var(--stats-accent),var(--stats-accent2))}.result-card header{display:flex;align-items:center;gap:10px;justify-content:space-between}.result-card h4{margin:0}.result-actions{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.result-actions button,.result-actions a{font-size:.86rem;padding:8px 10px}.result-table{max-height:320px}.interpretation{padding:12px;border-left:3px solid var(--stats-accent2);background:#08152b}.warning{color:#ffcf85}.report-builder{margin-top:20px}.toast{position:fixed;right:20px;bottom:20px;max-width:min(420px,calc(100% - 40px));padding:13px 16px;border-radius:12px;background:#132541;border:1px solid var(--stats-border);box-shadow:0 12px 32px #0008;opacity:0;transform:translateY(12px);pointer-events:none;transition:.2s}.toast.show{opacity:1;transform:none}.toast.error{border-color:var(--stats-danger)}body.light-theme.statistics-page{--stats-panel:rgba(255,255,255,.96);--stats-panel2:#f3f7fc;--stats-border:#ccd8e8;--stats-text:#17243a;--stats-muted:#56667d;background:#eaf1f8;color:var(--stats-text)}body.light-theme .session-card,body.light-theme .drop-zone,body.light-theme input,body.light-theme select,body.light-theme textarea,body.light-theme .output-box,body.light-theme .interpretation{background:#f7faff;color:#17243a}body.light-theme th{background:#e5edf7}body.light-theme .tabs button,body.light-theme .ghost{background:#dfe8f4;color:#24344c}@media(max-width:900px){.stats-hero,.privacy-note{align-items:flex-start;flex-direction:column}.session-card{width:100%}.upload-grid,.two-column{grid-template-columns:1fr}.variable-card .variable-grid{grid-template-columns:1fr 1fr}.import-options,.form-grid{grid-template-columns:1fr 1fr}}@media(max-width:560px){.stats-panel,.stats-hero{padding:16px;border-radius:15px}.variable-card,.import-options,.form-grid{grid-template-columns:1fr}.panel-heading,.workspace-head{align-items:flex-start;flex-direction:column}.privacy-note strong{white-space:normal}}



.table-toolbar,
.analysis-head,
.panel-title-row,
.result-controls,
.analysis-head-actions {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.table-toolbar label,
.form-grid label,
.import-options label,
.analysis-form-grid label,
.result-control-card label {
  min-width: 0;
}

.table-toolbar label {
  min-width: 180px;
}

.table-prefs,
.analysis-form-panel,
.analysis-selection,
.result-controls {
  margin-top: 14px;
  padding: 16px;
  border: 1px solid var(--stats-border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--stats-panel2) 88%, transparent);
}

.panel-title-row {
  margin-bottom: 10px;
}

.table-prefs-list,
.analysis-catalog,
.results-list {
  display: grid;
  gap: 12px;
}

.table-pref-row,
.analysis-card,
.result-control-card,
.result-card,
.job-panel,
.report-builder {
  border: 1px solid var(--stats-border);
  border-radius: 14px;
  background: var(--stats-panel2);
  box-shadow: 0 12px 32px rgba(2, 9, 24, 0.18);
}

.table-pref-row {
  display: grid;
  grid-template-columns: minmax(160px, 1.2fr) auto auto auto minmax(120px, 180px);
  gap: 10px;
  align-items: center;
  padding: 12px 14px;
}

.table-pref-row .pref-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.table-pref-row .pref-title strong {
  color: var(--stats-text);
}

.table-pref-row .pref-title small,
.table-pref-row .pref-meta,
.analysis-card small,
.result-control-card small {
  color: var(--stats-muted);
}

.table-pref-row .pref-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.table-pref-row input[type="range"] {
  width: 100%;
}

.data-table-wrap {
  position: relative;
  overflow: auto;
}

.data-table-wrap table {
  min-width: 100%;
}

.data-table-wrap th,
.data-table-wrap td {
  position: relative;
}

.data-table-wrap th.sortable {
  cursor: pointer;
  user-select: none;
}

.data-table-wrap th .th-sort-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.data-table-wrap th .sort-icon {
  width: 18px;
  text-align: center;
  font-size: 0.88rem;
  color: var(--stats-accent2);
}

.data-table-wrap th .resize-handle {
  position: absolute;
  top: 0;
  right: -2px;
  width: 6px;
  height: 100%;
  cursor: col-resize;
}

.data-table-wrap tr.filter-row th {
  top: 0;
  background: #0f2038;
  z-index: 2;
}

.data-table-wrap tr.filter-row input {
  min-width: 120px;
  padding: 8px 10px;
}

.analysis-catalog {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: 14px;
}

.analysis-card {
  padding: 16px;
  display: grid;
  gap: 10px;
}

.analysis-card.is-selected {
  border-color: rgba(126, 240, 204, 0.55);
  box-shadow: 0 14px 38px rgba(8, 32, 56, 0.35);
}

.analysis-card .analysis-tags,
.analysis-selection {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.analysis-chip,
.selection-chip {
  border-radius: 999px;
  padding: 6px 10px;
  background: rgba(19, 33, 58, 0.88);
  border: 1px solid var(--stats-border);
  color: var(--stats-text);
  font-size: 0.82rem;
}

.analysis-form-panel {
  margin-top: 14px;
  display: grid;
  gap: 12px;
}

.analysis-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.analysis-form-grid .full {
  grid-column: 1 / -1;
}

.analysis-help,
.analysis-empty,
.result-empty,
.table-prefs-empty {
  color: var(--stats-muted);
}

.result-controls {
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.result-control-card {
  padding: 14px;
  display: grid;
  gap: 10px;
}

.result-control-card .mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.result-card {
  padding: 16px;
}

.result-card header {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: space-between;
  flex-wrap: wrap;
}

.result-card .result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.result-card .interpretation {
  margin-top: 12px;
  padding: 12px;
  border-left: 3px solid var(--stats-accent2);
  background: #08152b;
  border-radius: 10px;
}

.result-card .plot-grid {
  display: grid;
  gap: 12px;
}

.result-card img {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--stats-border);
  box-shadow: 0 10px 24px rgba(2, 9, 24, 0.2);
  background: rgba(7, 19, 41, 0.65);
}

.stats-footer {
  width: min(var(--container), calc(100% - 32px));
  box-sizing: border-box;
  margin: 0 auto 32px;
  border: 1px solid var(--stats-border);
  border-radius: 20px;
  background: color-mix(in srgb, var(--stats-panel) 92%, transparent);
  box-shadow: 0 20px 55px rgba(2, 9, 24, 0.42);
  padding: 20px 24px;
}

.stats-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.stats-footer h2 {
  margin: 0 0 6px;
  font-size: 1.15rem;
}

.stats-footer p {
  margin: 0;
  color: var(--stats-muted);
}

.footer-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.footer-links a {
  text-decoration: none;
  color: var(--stats-text);
  border: 1px solid var(--stats-border);
  border-radius: 999px;
  padding: 8px 12px;
  background: rgba(7, 19, 41, 0.6);
}

.statistics-page .hidden {
  display: none !important;
}

body.light-theme.statistics-page .stats-footer,
body.light-theme.statistics-page .table-prefs,
body.light-theme.statistics-page .analysis-form-panel,
body.light-theme.statistics-page .analysis-selection,
body.light-theme.statistics-page .result-controls,
body.light-theme.statistics-page .analysis-card,
body.light-theme.statistics-page .result-control-card {
  background: #f7faff;
}

body.light-theme.statistics-page .table-pref-row,
body.light-theme.statistics-page .analysis-card,
body.light-theme.statistics-page .result-control-card,
body.light-theme.statistics-page .result-card,
body.light-theme.statistics-page .job-panel,
body.light-theme.statistics-page .report-builder {
  background: #f7faff;
  color: #17243a;
}

body.light-theme.statistics-page .data-table-wrap tr.filter-row th {
  background: #e5edf7;
}

body.light-theme.statistics-page .analysis-chip,
body.light-theme.statistics-page .selection-chip,
body.light-theme.statistics-page .footer-links a {
  background: #e5edf7;
  color: #17243a;
}

@media (max-width: 900px) {
  .table-pref-row {
    grid-template-columns: 1fr;
  }
  .analysis-form-grid,
  .result-control-card .mini-grid {
    grid-template-columns: 1fr;
  }
  .statistics-brand-row,
  .statistics-actions {
    gap: 8px;
  }
}

@media (max-width: 640px) {
  .statistics-shell {
    width: calc(100% - 20px);
  }
  .stats-panel,
  .stats-hero {
    padding: 16px;
    border-radius: 15px;
  }
  .stats-footer {
    width: calc(100% - 20px);
    padding: 16px;
    border-radius: 15px;
  }
  .site-topbar .site-topbar-inner {
    grid-template-columns: 1fr;
  }
  .site-topbar-left,
  .site-topbar-right,
  .statistics-actions {
    flex-wrap: wrap;
    justify-content: flex-start;
  }
}

/* ===== Card workspace architecture ===== */

body.statistics-page {
  --container: 1680px;
}

.statistics-app-shell {
  margin-bottom: 0;
}

#statisticsApplication {
  display: grid;
  gap: 16px;
  padding-bottom: 96px;
}

.stats-hero-compact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 22px;
  border: 1px solid var(--stats-border);
  background: var(--stats-panel);
  border-radius: 18px;
}

.hero-subtitle-compact {
  margin: 0;
  color: var(--stats-muted);
  font-size: 0.96rem;
  max-width: 760px;
}

/* Workflow rail */

.workflow-rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 6px 4px 10px;
  scrollbar-width: thin;
}

.workflow-rail::-webkit-scrollbar {
  height: 6px;
}

.rail-step {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  padding: 9px 14px 9px 10px;
  border-radius: 999px;
  border: 1px solid var(--stats-border);
  background: var(--stats-panel2);
  color: var(--stats-muted);
  cursor: pointer;
  font-weight: 700;
  font-size: 0.86rem;
  transition: 0.18s ease;
  white-space: nowrap;
}

.rail-step:hover:not(:disabled) {
  border-color: rgba(126, 240, 204, 0.4);
}

.rail-step:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.rail-step .rail-step-index {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(158, 185, 236, 0.16);
  color: var(--stats-text);
  font-size: 0.78rem;
}

.rail-step[aria-current="step"] {
  color: #052036;
  background: linear-gradient(135deg, var(--stats-accent), var(--stats-accent2));
  border-color: transparent;
}

.rail-step[aria-current="step"] .rail-step-index {
  background: rgba(5, 32, 54, 0.18);
  color: #052036;
}

.rail-step.is-complete .rail-step-index {
  background: linear-gradient(135deg, var(--stats-accent2), #4fd1a5);
  color: #052036;
}

.rail-step.is-stale .rail-step-index,
.rail-step.is-warning .rail-step-index {
  background: #ffcf85;
  color: #3a2400;
}

.rail-step.is-failed .rail-step-index {
  background: var(--stats-danger);
  color: #fff;
}

.rail-step-title {
  display: inline;
}

/* Mobile compact step summary */

.mobile-step-summary {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid var(--stats-border);
  background: var(--stats-panel2);
  border-radius: 14px;
}

.mobile-step-summary strong {
  display: block;
}

.mobile-step-summary span {
  font-size: 0.84rem;
}

/* Workspace layout */

.workspace-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  gap: 18px;
  align-items: start;
}

.primary-card-region {
  min-width: 0;
}

.stage-card {
  display: none;
}

.stage-card.stage-active {
  display: block;
  animation: stage-enter var(--stage-transition-duration, 220ms) var(--stage-transition-ease, cubic-bezier(0.22, 0.8, 0.2, 1));
}

@keyframes stage-enter {
  from {
    opacity: 0;
    transform: translateX(14px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .stage-card.stage-active {
    animation: none;
  }
}

.context-card-region {
  display: grid;
  gap: 14px;
  position: sticky;
  top: 90px;
  align-self: start;
}

.context-card {
  display: grid;
  gap: 8px;
  padding: 16px;
  border: 1px solid var(--stats-border);
  border-radius: 14px;
  background: var(--stats-panel2);
}

.session-context-card button {
  justify-self: start;
}

.dataset-context-card h3 {
  margin: 0;
}

.data-table-context-card .toolbar label {
  min-width: 0;
}

/* Sticky action bar */

.workflow-action-bar {
  position: sticky;
  bottom: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px;
  padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
  border: 1px solid var(--stats-border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--stats-panel) 96%, transparent);
  box-shadow: 0 -10px 30px rgba(2, 9, 24, 0.3);
  backdrop-filter: blur(10px);
}

.workflow-action-bar-status {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 0.88rem;
}

#stageContinueBtn:disabled,
#stageBackBtn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Quality stage */

.quality-score-row {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 14px 0;
}

.quality-score-badge {
  display: grid;
  place-items: center;
  width: 86px;
  height: 86px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--stats-accent), var(--stats-accent2));
  color: #052036;
  flex-shrink: 0;
}

.quality-score-badge span {
  font-size: 1.6rem;
  font-weight: 900;
  line-height: 1;
}

.quality-score-badge small {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.quality-issues {
  display: grid;
  gap: 10px;
}

.quality-issue-card {
  display: grid;
  gap: 6px;
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--stats-border);
  background: var(--stats-panel2);
}

.quality-issue-card.severity-warning {
  border-color: rgba(255, 207, 133, 0.5);
}

.quality-issue-card .quality-issue-action {
  color: var(--stats-muted);
  font-size: 0.88rem;
}

/* Transform recipe */

.transform-history-list {
  display: grid;
  gap: 8px;
  max-height: 320px;
  overflow: auto;
}

.transform-history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--stats-border);
  background: var(--stats-panel2);
  font-size: 0.86rem;
}

.transform-history-item.is-current {
  border-color: rgba(126, 240, 204, 0.55);
}

.transform-history-item.is-undone {
  opacity: 0.55;
}

/* Results studio */

.results-studio {
  display: grid;
  grid-template-columns: minmax(160px, 220px) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.result-navigator {
  display: grid;
  gap: 6px;
  position: sticky;
  top: 90px;
}

.result-nav-item {
  text-align: left;
  padding: 9px 12px;
  border-radius: 10px;
  border: 1px solid var(--stats-border);
  background: var(--stats-panel2);
  color: var(--stats-text);
  font-size: 0.84rem;
  cursor: pointer;
}

.result-nav-item.active {
  border-color: rgba(126, 240, 204, 0.55);
  background: linear-gradient(135deg, rgba(99, 178, 255, 0.22), rgba(126, 240, 204, 0.18));
}

.results-list .result-card.is-isolated-hidden {
  display: none;
}

.stale-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 16px;
  margin-bottom: 14px;
  border-radius: 12px;
  border: 1px solid rgba(255, 207, 133, 0.5);
  background: rgba(255, 160, 88, 0.12);
  color: #ffd5b2;
}

/* Wizard / expert mode collapsible */

.wizard-details,
.expert-mode {
  border: 1px solid var(--stats-border);
  border-radius: 14px;
  padding: 14px 16px;
  background: var(--stats-panel2);
  margin-bottom: 16px;
}

.wizard-details summary,
.expert-mode summary {
  cursor: pointer;
  font-weight: 700;
}

.expert-mode textarea {
  margin-top: 10px;
}

/* Step drawer (mobile) */

.step-drawer {
  position: fixed;
  inset: 0;
  z-index: 100;
}

.step-drawer.hidden {
  display: none;
}

.step-drawer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 9, 24, 0.55);
}

.step-drawer-panel {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  max-height: 80vh;
  overflow: auto;
  border-radius: 18px 18px 0 0;
  background: var(--stats-panel);
  border: 1px solid var(--stats-border);
  padding: 16px;
  padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
}

.step-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.step-drawer-list {
  display: grid;
  gap: 8px;
}

.step-drawer-list .rail-step {
  width: 100%;
  justify-content: flex-start;
}

body.light-theme.statistics-page .context-card,
body.light-theme.statistics-page .rail-step,
body.light-theme.statistics-page .quality-issue-card,
body.light-theme.statistics-page .transform-history-item,
body.light-theme.statistics-page .result-nav-item,
body.light-theme.statistics-page .wizard-details,
body.light-theme.statistics-page .expert-mode,
body.light-theme.statistics-page .step-drawer-panel {
  background: #f7faff;
  color: #17243a;
}

@media (max-width: 1100px) {
  .workspace-layout {
    grid-template-columns: 1fr;
  }
  .context-card-region {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .results-studio {
    grid-template-columns: 1fr;
  }
  .result-navigator {
    position: static;
    display: flex;
    overflow-x: auto;
  }
}

@media (max-width: 900px) {
  .workflow-rail {
    display: none;
  }
  .mobile-step-summary {
    display: flex;
  }
  .context-card-region {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .workflow-action-bar {
    flex-wrap: wrap;
  }
  .quality-score-row {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== Dataset overview card (compact, on-demand viewer trigger) ===== */

.dataset-overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  gap: 10px;
  margin: 10px 0;
}

.dataset-overview-grid > div {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.dataset-overview-grid small {
  color: var(--stats-muted);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.dataset-overview-grid strong {
  font-size: 1.05rem;
  overflow-wrap: anywhere;
}

/* ===== Dataset viewer modal (on-demand, not a permanent sidebar) ===== */

.dataset-viewer-modal {
  position: fixed;
  inset: 0;
  z-index: 110;
  display: grid;
  place-items: center;
  padding: 24px;
}

.dataset-viewer-modal.hidden {
  display: none;
}

.dataset-viewer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 9, 24, 0.6);
}

.dataset-viewer-panel {
  position: relative;
  width: min(1400px, 100%);
  max-height: min(900px, calc(100vh - 48px));
  overflow: auto;
  border-radius: 18px;
  border: 1px solid var(--stats-border);
  background: var(--stats-panel);
  box-shadow: 0 30px 80px rgba(2, 9, 24, 0.5);
  padding: 20px;
  display: grid;
  gap: 12px;
  align-content: start;
}

.dataset-viewer-head {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.dataset-viewer-head h3 {
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
}

@media (max-width: 700px) {
  .dataset-viewer-modal {
    padding: 0;
  }
  .dataset-viewer-panel {
    width: 100%;
    height: 100%;
    max-height: 100%;
    border-radius: 0;
  }
}

/* ===== Dataset Selection stage ===== */

.selection-summary-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin: 14px 0;
}

.selection-summary-card {
  min-width: 0;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--stats-border);
  background: var(--stats-panel2);
  display: grid;
  gap: 2px;
}

.selection-summary-card strong {
  font-size: 1.3rem;
}

.selection-summary-card span {
  color: var(--stats-muted);
  font-size: 0.8rem;
}

.selection-quick-actions {
  margin: 10px 0;
}

.selection-column-list {
  display: grid;
  gap: 6px;
  max-height: 420px;
  overflow: auto;
  margin-top: 10px;
}

.selection-column-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--stats-border);
  background: var(--stats-panel2);
  min-width: 0;
}

.selection-column-row input[type="checkbox"] {
  flex-shrink: 0;
  width: auto;
}

.selection-column-name {
  min-width: 0;
  flex: 1 1 160px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.selection-column-row .muted {
  flex: 1 1 220px;
  min-width: 0;
  font-size: 0.82rem;
}

/* ===== Analysis plan summary (Plan / Configure / Run) ===== */

.analysis-plan-summary {
  margin-top: 16px;
  padding: 14px;
  border-radius: 14px;
  border: 1px solid var(--stats-border);
  background: var(--stats-panel2);
}

.plan-summary-head {
  margin-bottom: 8px;
}

.plan-summary-list {
  display: grid;
  gap: 8px;
}

.plan-summary-item {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--stats-border);
  background: color-mix(in srgb, var(--stats-panel) 88%, transparent);
  min-width: 0;
}

.plan-summary-item.has-warning {
  border-color: rgba(255, 207, 133, 0.55);
}

.plan-summary-status {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(126, 240, 204, 0.18);
  font-weight: 800;
}

.plan-summary-item.has-warning .plan-summary-status {
  background: #ffcf85;
  color: #3a2400;
}

.plan-summary-name {
  font-weight: 700;
  flex: 1 1 160px;
  min-width: 0;
}

.plan-summary-detail {
  flex: 2 1 220px;
  min-width: 0;
  font-size: 0.84rem;
}

/* ===== Visual cleaning operation form ===== */

.operation-visual-form {
  display: grid;
  gap: 12px;
  margin: 12px 0;
}

.operation-visual-form label {
  min-width: 0;
}

body.light-theme.statistics-page .dataset-viewer-panel,
body.light-theme.statistics-page .selection-summary-card,
body.light-theme.statistics-page .selection-column-row,
body.light-theme.statistics-page .analysis-plan-summary,
body.light-theme.statistics-page .plan-summary-item {
  background: #f7faff;
  color: #17243a;
}

@media (max-width: 900px) {
  .plan-summary-item {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== Root-cause fix: inputs/selects/textareas/buttons used content-box
   sizing while also using width:100% plus padding+border, so every control
   rendered ~26px wider than its grid cell and overflowed into the next
   column (most visible in the Report stage's two-column form). ===== */

.statistics-page input,
.statistics-page select,
.statistics-page textarea,
.statistics-page button {
  box-sizing: border-box;
}

.statistics-page label {
  min-width: 0;
}

.statistics-page .form-grid > *,
.statistics-page .two-column > *,
.statistics-page .import-options > * {
  min-width: 0;
}

/* ===== Report stage: stable form structure ===== */

.report-metadata-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  margin: 14px 0;
}

.report-metadata-grid .form-field {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.report-metadata-grid .form-field label {
  color: var(--stats-muted);
  font-size: 0.86rem;
}

.report-metadata-grid .toggle-field {
  align-self: end;
}

.report-metadata-grid .toggle-line {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  color: var(--stats-text);
}

.report-metadata-grid .toggle-line input[type="checkbox"] {
  width: auto;
  flex-shrink: 0;
}

@media (max-width: 720px) {
  .report-metadata-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== Report completion card (replaces the raw blue download link) ===== */

.report-completion-card {
  margin-top: 18px;
  padding: 16px;
  border-radius: 14px;
  border: 1px solid rgba(126, 240, 204, 0.5);
  background: color-mix(in srgb, var(--stats-panel2) 90%, rgba(126, 240, 204, 0.12));
}

.report-completion-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.report-completion-badge {
  display: inline-grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--stats-accent2), #4fd1a5);
  color: #052036;
  font-weight: 900;
}

.report-completion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.report-completion-grid > div {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.report-completion-grid small {
  color: var(--stats-muted);
  font-size: 0.74rem;
  text-transform: uppercase;
}

.report-completion-grid span {
  overflow-wrap: anywhere;
  font-weight: 700;
}

/* ===== Report Studio (full-screen) ===== */

.report-studio-modal {
  position: fixed;
  inset: 0;
  z-index: 120;
}

.report-studio-modal.hidden {
  display: none;
}

.report-studio-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 9, 24, 0.65);
}

.report-studio-panel {
  position: absolute;
  inset: 14px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  border-radius: 18px;
  border: 1px solid var(--stats-border);
  background: var(--stats-panel);
  box-shadow: 0 30px 90px rgba(2, 9, 24, 0.55);
  overflow: hidden;
}

.report-studio-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--stats-border);
}

.report-studio-head h3 {
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
}

.report-studio-body {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr) minmax(260px, 320px);
  min-height: 0;
  overflow: hidden;
}

.report-studio-blocks,
.report-studio-inspector {
  overflow-y: auto;
  padding: 14px;
  min-width: 0;
}

.report-studio-blocks {
  border-right: 1px solid var(--stats-border);
}

.report-studio-inspector {
  border-left: 1px solid var(--stats-border);
}

.report-studio-blocks-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.report-block-list {
  display: grid;
  gap: 8px;
}

.report-block-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--stats-border);
  background: var(--stats-panel2);
  cursor: grab;
  min-width: 0;
}

.report-block-row.is-selected {
  border-color: rgba(126, 240, 204, 0.6);
  box-shadow: 0 0 0 1px rgba(126, 240, 204, 0.3) inset;
}

.report-block-row.is-hidden-block {
  opacity: 0.5;
}

.report-block-row.is-drag-over {
  border-color: var(--stats-accent);
}

.report-block-title {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.report-block-title strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.88rem;
}

.report-block-title small {
  color: var(--stats-muted);
  font-size: 0.72rem;
  text-transform: uppercase;
}

.report-block-actions {
  display: flex;
  gap: 4px;
}

.report-block-actions button {
  padding: 4px 7px;
  font-size: 0.78rem;
}

.report-studio-preview {
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 0;
  background: #0b1424;
}

.report-preview-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--stats-border);
}

.report-preview-frame-wrap {
  position: relative;
  min-height: 0;
}

.report-preview-frame-wrap iframe {
  width: 100%;
  height: 100%;
  border: none;
  background: #fff;
}

.report-preview-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--stats-muted);
  text-align: center;
  padding: 20px;
}

.report-inspector-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.report-inspector-tabs button {
  flex: 1 1 auto;
  background: var(--stats-panel2);
  color: var(--stats-muted);
}

.report-inspector-tabs button.active {
  color: #052036;
  background: linear-gradient(135deg, var(--stats-accent), var(--stats-accent2));
}

.report-inspector-content {
  display: grid;
  gap: 12px;
}

.report-inspector-content .form-field {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.report-inspector-content .toggle-line {
  display: flex;
  align-items: center;
  gap: 8px;
}

.report-inspector-content textarea {
  min-height: 140px;
  font-family: inherit;
}

.report-markup-toolbar {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.report-markup-toolbar button {
  padding: 5px 9px;
  font-size: 0.82rem;
}

.report-studio-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-top: 1px solid var(--stats-border);
  flex-wrap: wrap;
}

.report-studio-actions-spacer {
  flex: 1 1 auto;
}

@media (max-width: 1100px) {
  .report-studio-body {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr auto;
  }
  .report-studio-blocks,
  .report-studio-inspector {
    border: none;
    border-bottom: 1px solid var(--stats-border);
    max-height: 220px;
  }
}

@media (max-width: 640px) {
  .report-studio-panel {
    inset: 0;
    border-radius: 0;
  }
}

body.light-theme.statistics-page .report-completion-card,
body.light-theme.statistics-page .report-studio-panel,
body.light-theme.statistics-page .report-block-row {
  background: #f7faff;
  color: #17243a;
}