:root {
  --bg-dark: #070b14;
  --bg-panel: #0f172a;
  --bg-card: #1e293b;
  --bg-input: #0b1120;
  --bg-header: linear-gradient(90deg, #0b1120 0%, #0f172a 60%, #1e293b 100%);
  --bg-section: rgba(30, 41, 59, 0.48);
  --bg-kpi-card: rgba(30, 41, 59, 0.55);
  --bg-tabs-bar: #0b1120;
  --bg-overlay: rgba(15, 23, 42, 0.86);
  --bg-legend-item: rgba(30, 41, 59, 0.72);
  --bg-mini-btn: #1e293b;
  --bg-mini-btn-hover: #334155;
  --bg-table-th: #1e293b;
  --bg-gas-desc: rgba(15, 23, 42, 0.65);
  --border-col: #334155;
  --border-subtle: #1e293b;
  --text-main: #f1f5f9;
  --text-heading: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --text-btn: #cbd5e1;
  --accent-orange: #f97316;
  --accent-blue: #38bdf8;
  --accent-red: #ef4444;
  --accent-yellow: #eab308;
  --accent-green: #22c55e;
  --accent-purple: #a855f7;
  --kpi-yellow: #facc15;
  --kpi-orange: #fb923c;
  --kpi-blue: #38bdf8;
}

[data-theme="light"] {
  --bg-dark: #f1f5f9;
  --bg-panel: #ffffff;
  --bg-card: #f8fafc;
  --bg-input: #ffffff;
  --bg-header: linear-gradient(90deg, #ffffff 0%, #f8fafc 60%, #e2e8f0 100%);
  --bg-section: #f8fafc;
  --bg-kpi-card: #f8fafc;
  --bg-tabs-bar: #f1f5f9;
  --bg-overlay: rgba(255, 255, 255, 0.92);
  --bg-legend-item: #f1f5f9;
  --bg-mini-btn: #f1f5f9;
  --bg-mini-btn-hover: #e2e8f0;
  --bg-table-th: #e2e8f0;
  --bg-gas-desc: #f1f5f9;
  --border-col: #cbd5e1;
  --border-subtle: #e2e8f0;
  --text-main: #0f172a;
  --text-heading: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;
  --text-btn: #1e293b;
  --accent-orange: #ea580c;
  --accent-blue: #0284c7;
  --accent-red: #dc2626;
  --accent-yellow: #ca8a04;
  --accent-green: #16a34a;
  --accent-purple: #9333ea;
  --kpi-yellow: #b45309;
  --kpi-orange: #c2410c;
  --kpi-blue: #0284c7;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-size: 13px;
}

/* Full-Screen Visualisation Mode */
body.fullscreen-view .app-header,
body.fullscreen-view .sidebar,
body.fullscreen-view .kpi-strip {
  display: none !important;
}

body.fullscreen-view .workspace {
  width: 100vw;
  height: 100vh;
}

/* Top Header Bar */
.app-header {
  height: 54px;
  background: var(--bg-header);
  border-bottom: 1px solid var(--border-col);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  flex-shrink: 0;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-heading);
  letter-spacing: -0.2px;
}

.preset-bar {
  display: flex;
  align-items: center;
  gap: 8px;
}

.preset-bar label {
  color: var(--text-muted);
  font-size: 11.5px;
  font-weight: 600;
}

.preset-select {
  background: var(--bg-input);
  color: var(--text-main);
  border: 1px solid var(--border-col);
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 12px;
  cursor: pointer;
}

.header-action-btn {
  flex: 0 0 auto !important;
  padding: 6px 11px !important;
  font-weight: 600;
}

.btn-primary-action {
  flex: 0 0 auto !important;
  padding: 6px 12px !important;
  font-weight: 700;
  background: #0284c7 !important;
  color: #fff !important;
  border-color: #38bdf8 !important;
}

.btn-primary-action:hover {
  background: #0369a1 !important;
  color: #fff !important;
}

/* Main Split Layout */
.app-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Left Input Sidebar */
.sidebar {
  width: 390px;
  min-width: 350px;
  background: var(--bg-panel);
  border-right: 1px solid var(--border-col);
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 2px 2px 4px 2px;
}

.sidebar-toolbar-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
}

.sidebar-toolbar-actions {
  display: flex;
  gap: 6px;
}

.sidebar-toolbar-actions .mini-btn {
  padding: 3px 9px;
  font-size: 11px;
  font-weight: 600;
}

.panel-section {
  background: var(--bg-section);
  border: 1px solid var(--border-col);
  border-radius: 8px;
  padding: 11px 12px;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-col);
  cursor: pointer;
  user-select: none;
  outline: none;
}

.section-header:hover .section-title,
.section-header:focus-visible .section-title {
  color: var(--accent-blue);
  opacity: 0.85;
}

.section-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--accent-blue);
  transition: color 0.15s ease;
}

.section-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  border-radius: 5px;
  background: var(--bg-mini-btn);
  border: 1px solid var(--border-col);
  color: var(--text-btn);
  font-size: 10.5px;
  font-weight: 600;
  line-height: 1.2;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.section-toggle-icon {
  display: inline-block;
  font-size: 11px;
  line-height: 1;
  transition: transform 0.18s ease;
}

.section-header:hover .section-toggle-btn,
.section-header:focus-visible .section-toggle-btn {
  color: var(--text-heading);
  background: var(--bg-mini-btn-hover);
  border-color: var(--accent-blue);
}

.panel-section.collapsed .section-header {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom-color: transparent;
}

.panel-section.collapsed .section-toggle-icon {
  transform: rotate(-90deg);
}

.panel-section.collapsed .section-body {
  display: none;
}

.dashed-top-block {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--border-col);
}

.gas-desc {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.35;
  margin-top: 4px;
  margin-bottom: 8px;
  padding: 6px 8px;
  background: var(--bg-gas-desc);
  border-radius: 5px;
  border-left: 3px solid var(--accent-orange);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 10px;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

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

.form-group label {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
  display: flex;
  justify-content: space-between;
}

.form-group label span.unit {
  color: var(--text-dim);
  font-weight: 400;
}

input[type="number"],
select {
  background: var(--bg-input);
  border: 1px solid var(--border-col);
  color: var(--text-main);
  padding: 5px 8px;
  border-radius: 5px;
  font-size: 12.5px;
  width: 100%;
}

input[type="number"]:focus,
select:focus {
  outline: none;
  border-color: var(--accent-blue);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent-blue);
  cursor: pointer;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 6px 0;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  color: var(--text-main);
}

.accent-blue-text {
  color: var(--accent-blue) !important;
}

/* Compass Dial Box */
.compass-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bg-input);
  border: 1px solid var(--border-col);
  border-radius: 7px;
  padding: 8px;
  margin: 8px 0;
}

#vectorDialCanvas {
  width: 210px;
  height: 175px;
  cursor: pointer;
}

.regime-pill {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.14);
  color: var(--accent-blue);
  border: 1px solid rgba(56, 189, 248, 0.35);
  margin-top: 4px;
  text-align: center;
}

.quick-btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 6px;
}

.mini-btn {
  background: var(--bg-mini-btn);
  color: var(--text-btn);
  border: 1px solid var(--border-col);
  border-radius: 5px;
  padding: 4px 7px;
  font-size: 11px;
  cursor: pointer;
  transition: all 0.12s;
  flex: 1;
  text-align: center;
  white-space: nowrap;
}

.mini-btn:hover {
  background: var(--bg-mini-btn-hover);
  color: var(--text-heading);
  border-color: var(--accent-blue);
}

.mini-btn.danger:hover {
  border-color: var(--accent-red);
  color: var(--accent-red);
}

/* Right Main Workspace */
.workspace {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-dark);
}

/* Top KPI Strip */
.kpi-strip {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  padding: 10px 14px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-col);
  flex-shrink: 0;
}

.kpi-card {
  background: var(--bg-kpi-card);
  border: 1px solid var(--border-col);
  border-radius: 7px;
  padding: 7px 10px;
}

.kpi-label {
  font-size: 10.5px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.kpi-value {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text-heading);
  margin-top: 2px;
}

.kpi-val-yellow {
  color: var(--kpi-yellow);
}

.kpi-val-orange {
  color: var(--kpi-orange);
}

.kpi-val-blue {
  color: var(--kpi-blue);
}

.kpi-sub {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 1px;
}

/* Navigation Tabs */
.tabs-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  background: var(--bg-tabs-bar);
  border-bottom: 1px solid var(--border-col);
  height: 42px;
  flex-shrink: 0;
}

.tabs-bar-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11.5px;
  color: var(--text-muted);
}

.fullscreen-btn {
  flex: 0 0 auto !important;
  padding: 4px 10px !important;
  font-weight: 600;
}

body.fullscreen-view .fullscreen-btn {
  background: var(--accent-blue);
  color: #fff;
  border-color: var(--accent-blue);
}

.tab-buttons {
  display: flex;
  gap: 6px;
  height: 100%;
  align-items: flex-end;
}

.tab-btn {
  background: transparent;
  color: var(--text-muted);
  border: none;
  border-bottom: 2px solid transparent;
  padding: 9px 14px;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

.tab-btn:hover {
  color: var(--text-main);
}

.tab-btn.active {
  color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
  background: rgba(56, 189, 248, 0.09);
}

/* Tab Content Panes */
.tab-pane {
  display: none;
  flex: 1;
  overflow: hidden;
  position: relative;
}

.tab-pane.active {
  display: flex;
  flex-direction: column;
}

/* 3D Viewer Layout */
.viewer-container {
  flex: 1;
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

#threeContainer {
  width: 100%;
  height: 100%;
}

.viewer-overlay-top {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  pointer-events: none;
  gap: 10px;
}

.overlay-box {
  background: var(--bg-overlay);
  backdrop-filter: blur(6px);
  border: 1px solid var(--border-col);
  border-radius: 7px;
  padding: 8px 11px;
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
}

.overlay-label {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 600;
}

.viewer-cam-box,
.viewer-options-box {
  flex-wrap: nowrap;
  white-space: nowrap;
  padding: 6px 10px;
}

.viewer-cam-box {
  gap: 6px;
}

.cam-btn {
  flex: 0 0 72px;
  width: 72px;
  padding: 4px 6px;
}

.viewer-options-box {
  gap: 10px;
}

.viewer-options-box .checkbox-label {
  font-size: 11px;
  gap: 5px;
  white-space: nowrap;
}

.viewer-overlay-bottom {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: flex-start;
  align-items: flex-end;
  pointer-events: none;
}

.legend-combined-box {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 6px;
  padding: 8px 12px;
  max-width: 100%;
}

/* Caption stays on the first line; only the swatch items wrap beneath it. */
.legend-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.legend-group-label {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  min-width: 128px;
}

.legend-items-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1 1 0;
  min-width: 0;
  flex-wrap: wrap;
}

.legend-divider {
  height: 1px;
  background: var(--border-col);
  opacity: 0.55;
  width: 100%;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  padding: 2px 7px;
  border-radius: 4px;
  background: var(--bg-legend-item);
  border: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.swatch {
  width: 11px;
  height: 11px;
  border-radius: 3px;
  display: inline-block;
}

/* Charts View */
.charts-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.chart-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-col);
  border-radius: 8px;
  padding: 10px;
  display: flex;
  flex-direction: column;
}

.chart-card.full-span {
  grid-column: 1 / -1;
}

.chart-canvas {
  width: 100%;
  height: 330px;
  display: block;
}

/* Receptor Point Probe Bar */
.probe-bar {
  background: var(--bg-panel);
  border: 1px solid var(--border-col);
  border-radius: 8px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.probe-inputs {
  display: flex;
  align-items: center;
  gap: 10px;
}

.probe-inputs label {
  font-size: 11.5px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 5px;
}

.probe-inputs input {
  width: 72px;
}

/* Tables View */
.tables-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.table-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-col);
  border-radius: 8px;
  padding: 12px;
}

.table-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.table-card-title {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--text-heading);
}

.table-card-sub {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 2px;
}

.data-table-wrap {
  overflow-x: auto;
  max-height: 390px;
  overflow-y: auto;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

table.data-table th,
table.data-table td {
  padding: 7px 10px;
  text-align: right;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

table.data-table th:first-child,
table.data-table td:first-child,
table.data-table th:nth-child(2),
table.data-table td:nth-child(2) {
  text-align: left;
}

table.data-table th {
  background: var(--bg-table-th);
  color: var(--text-btn);
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 2;
}

table.data-table tr:hover td {
  background: rgba(56, 189, 248, 0.08);
}

.badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}

@media (max-width: 1200px) {
  .kpi-strip {
    grid-template-columns: repeat(3, 1fr);
  }
  .charts-grid {
    grid-template-columns: 1fr;
  }
}