/* ============================================================================
 * GatheringScans (scans.gatheren.cloud) — Clean Architectural UI Stylesheet
 * Strict Style Discipline:
 * - Zero emojis (pure monochrome vector SVG stroke icons)
 * - Strict colour discipline (Slate-White surfaces #ffffff / #f8fafc / #f1f5f9,
 *   neutral slate typography #0f172a / #475569 / #64748b, single #0284c7 accent)
 * - Icon-only (0 words) or maximum 1-word buttons
 * ============================================================================ */

:root {
  --ui-bg-canvas: #0f172a;
  --ui-bg-window: rgba(255, 255, 255, 0.96);
  --ui-bg-subtle: #f8fafc;
  --ui-bg-pill: #f1f5f9;
  --ui-bg-hover: #e2e8f0;
  --ui-border: #e2e8f0;
  --ui-border-strong: #cbd5e1;
  --ui-text-primary: #0f172a;
  --ui-text-secondary: #475569;
  --ui-text-muted: #64748b;
  --ui-accent: #0284c7;
  --ui-accent-hover: #0369a1;
  --ui-accent-soft: rgba(2, 132, 199, 0.08);
  --ui-shadow-window: 0 10px 30px rgba(15, 23, 42, 0.14), 0 1px 3px rgba(15, 23, 42, 0.06);
  --ui-shadow-active: 0 1px 3px rgba(15, 23, 42, 0.10), 0 1px 2px rgba(15, 23, 42, 0.06);
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft JhengHei", Roboto, sans-serif;
  background: var(--ui-bg-canvas);
  color: var(--ui-text-primary);
  -webkit-font-smoothing: antialiased;
}

/* ============================================================================
 * 1. Top Navigation Bar (Clean Light Slate-White Surface)
 * ============================================================================ */
.gs-topbar {
  height: 52px;
  background: #ffffff;
  border-bottom: 1px solid var(--ui-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  gap: 12px;
  z-index: 200;
  position: relative;
  user-select: none;
}

.gs-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.gs-brand-logo {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  background: var(--ui-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.gs-brand-title {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ui-text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.gs-crs-pill {
  font-size: 11px;
  font-weight: 600;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  background: var(--ui-bg-pill);
  color: var(--ui-text-secondary);
  border: 1px solid var(--ui-border-strong);
  padding: 2px 8px;
  border-radius: 6px;
}

/* Segmented Pill Mode Switcher — Exact Match to Reference Image */
.segmented-pill {
  display: inline-flex;
  align-items: center;
  background: var(--ui-bg-pill);
  border: 1px solid var(--ui-border-strong);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
}

.segmented-pill .btn-seg {
  border: 1px solid transparent;
  background: transparent;
  color: var(--ui-text-secondary);
  border-radius: 7px;
  padding: 5px 14px;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.14s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.segmented-pill .btn-seg:hover {
  color: var(--ui-text-primary);
}

.segmented-pill .btn-seg.active {
  background: #ffffff;
  color: var(--ui-accent);
  border-color: rgba(203, 213, 225, 0.7);
  box-shadow: var(--ui-shadow-active);
}

.segmented-pill .btn-seg svg {
  stroke: currentColor;
}

/* Right Action Cluster */
.gs-topbar-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.cloud-sync-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--ui-border-strong);
  background: var(--ui-bg-pill);
  color: var(--ui-text-secondary);
  cursor: pointer;
  transition: all 0.14s ease;
}

.cloud-sync-chip:hover {
  background: #ffffff;
  color: var(--ui-accent);
  border-color: var(--ui-accent);
}

.cloud-sync-chip .status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ui-accent);
  display: inline-block;
}

.cloud-sync-chip.state-offline .status-dot {
  background: var(--ui-text-muted);
}

.gs-top-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: var(--ui-bg-pill);
  border: 1px solid var(--ui-border-strong);
  color: var(--ui-text-secondary);
  height: 32px;
  min-width: 32px;
  padding: 0 9px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.14s ease;
  text-decoration: none;
}

.gs-top-btn:hover {
  background: #ffffff;
  color: var(--ui-accent);
  border-color: var(--ui-accent);
  box-shadow: var(--ui-shadow-active);
}

.gs-top-btn.accent {
  background: #ffffff;
  border-color: var(--ui-border-strong);
  color: var(--ui-accent);
  box-shadow: var(--ui-shadow-active);
}

.gs-top-btn.accent:hover {
  background: var(--ui-accent);
  color: #ffffff;
  border-color: var(--ui-accent);
}

/* External Share Guest Scope Banner */
.gs-share-banner {
  background: #f8fafc;
  border-bottom: 1px solid var(--ui-border-strong);
  padding: 6px 16px;
  font-size: 12px;
  display: none;
  align-items: center;
  justify-content: space-between;
  color: var(--ui-text-primary);
  z-index: 190;
}

/* ============================================================================
 * 2. Main Workspace Views (Map, 3D Studio, Multi-Date Compare)
 * ============================================================================ */
.gs-main {
  position: relative;
  width: 100%;
  height: calc(100vh - 52px);
  overflow: hidden;
}

.gs-view {
  position: absolute;
  inset: 0;
  display: none;
}

.gs-view.active {
  display: block;
}

/* ============================================================================
 * 3. Map Overview & Spatial Cluster Windows (Clean Slate-White Cards)
 * ============================================================================ */
#mapContainer {
  width: 100%;
  height: 100%;
  background: #0f172a;
}

.gs-map-hud-top {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 500;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 320px;
}

.gs-map-card {
  background: var(--ui-bg-window);
  backdrop-filter: blur(12px);
  border: 1px solid var(--ui-border-strong);
  border-radius: 12px;
  padding: 14px;
  box-shadow: var(--ui-shadow-window);
  color: var(--ui-text-primary);
}

/* Spatial Cluster Blobs on Map */
.scan-cluster-blob {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--ui-accent);
  border: 2.5px solid #ffffff;
  color: #ffffff;
  font-weight: 700;
  font-size: 13px;
  box-shadow: 0 0 0 5px rgba(2, 132, 199, 0.24), 0 4px 14px rgba(15, 23, 42, 0.35);
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.scan-cluster-blob:hover {
  transform: scale(1.1);
  box-shadow: 0 0 0 8px rgba(2, 132, 199, 0.32), 0 6px 20px rgba(15, 23, 42, 0.45);
}

.scan-cluster-blob .blob-label {
  position: absolute;
  top: calc(100% + 6px);
  white-space: nowrap;
  background: #ffffff;
  border: 1px solid var(--ui-border-strong);
  color: var(--ui-text-primary);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 6px;
  box-shadow: var(--ui-shadow-active);
}

/* Hover Selection Popover for Grouped Scans */
.gs-cluster-popover {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 400px;
  max-height: calc(100vh - 88px);
  overflow-y: auto;
  background: var(--ui-bg-window);
  backdrop-filter: blur(14px);
  border: 1px solid var(--ui-border-strong);
  border-radius: 12px;
  box-shadow: var(--ui-shadow-window);
  z-index: 600;
  padding: 14px;
  display: none;
  color: var(--ui-text-primary);
}

.gs-cluster-popover.active {
  display: block;
}

.gs-scan-item-card {
  background: var(--ui-bg-subtle);
  border: 1px solid var(--ui-border);
  border-radius: 9px;
  padding: 10px 12px;
  margin-top: 8px;
  transition: all 0.14s ease;
}

.gs-scan-item-card:hover {
  border-color: var(--ui-border-strong);
  background: #ffffff;
  box-shadow: var(--ui-shadow-active);
}

.gs-scan-item-actions {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 8px;
}

/* Compact Icon-Only or 1-Word Button */
.btn-xs {
  height: 28px;
  min-width: 28px;
  padding: 0 8px;
  border-radius: 6px;
  font-size: 11.5px;
  font-weight: 600;
  border: 1px solid var(--ui-border-strong);
  background: var(--ui-bg-pill);
  color: var(--ui-text-secondary);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  transition: all 0.14s ease;
}

.btn-xs:hover {
  background: #ffffff;
  border-color: var(--ui-accent);
  color: var(--ui-accent);
  box-shadow: var(--ui-shadow-active);
}

.btn-xs.primary {
  background: #ffffff;
  border-color: var(--ui-border-strong);
  color: var(--ui-accent);
  box-shadow: var(--ui-shadow-active);
}

.btn-xs.primary:hover {
  background: var(--ui-accent);
  border-color: var(--ui-accent);
  color: #ffffff;
}

.btn-xs svg {
  stroke: currentColor;
  flex-shrink: 0;
}

/* ============================================================================
 * 4. 3D Scan Studio & Clean Icon-Only Toolbars
 * ============================================================================ */
#studioCanvasContainer {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 40%, #162032 0%, #0b0f19 100%);
}

.gs-studio-top-bar {
  position: absolute;
  top: 14px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  pointer-events: none;
  z-index: 80;
}

.gs-studio-top-bar > * {
  pointer-events: auto;
}

.gs-active-scan-pill {
  background: var(--ui-bg-window);
  backdrop-filter: blur(12px);
  border: 1px solid var(--ui-border-strong);
  border-radius: 10px;
  padding: 7px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--ui-shadow-window);
  color: var(--ui-text-primary);
}

.gs-scan-select {
  background: var(--ui-bg-pill);
  color: var(--ui-text-primary);
  border: 1px solid var(--ui-border-strong);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 600;
  outline: none;
}

/* Scan Brightness Control (0.1x – 4.0x, matching Gathering Cloud) */
.gs-brightness-control {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-left: 1px solid var(--ui-border-strong);
  padding-left: 10px;
}

.gs-brightness-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--ui-accent);
  cursor: pointer;
  padding: 2px;
  border-radius: 4px;
  transition: color 0.14s ease, background 0.14s ease;
}

.gs-brightness-icon-btn:hover {
  background: var(--ui-bg-pill);
  color: var(--ui-accent-hover);
}

.gs-brightness-slider {
  width: 78px;
  height: 4px;
  accent-color: var(--ui-accent);
  cursor: pointer;
}

.gs-brightness-val {
  font-size: 11px;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  color: var(--ui-text-primary);
  min-width: 32px;
  text-align: right;
}

/* Bottom Measurement Toolbar & Bottom Dock — Segmented Pill Clean Style */
.bim-measure-bottom-container {
  position: absolute;
  bottom: 68px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 100;
  max-width: calc(100vw - 24px);
}

.autodesk-measure-toolbar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--ui-bg-pill) !important;
  border: 1px solid var(--ui-border-strong);
  padding: 4px;
  border-radius: 12px;
  box-shadow: var(--ui-shadow-window);
  z-index: 100;
  user-select: none;
}

.autodesk-measure-subtools {
  display: flex;
  align-items: center;
  gap: 2px;
}

.autodesk-measure-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  width: 36px;
  height: 34px;
  padding: 0;
  cursor: pointer;
  color: var(--ui-text-secondary) !important;
  transition: all 0.14s ease;
}

.autodesk-measure-btn > *,
.bim-dock-btn > * {
  pointer-events: none;
}

.autodesk-measure-btn:hover {
  color: var(--ui-text-primary) !important;
  background: rgba(255, 255, 255, 0.5) !important;
}

.autodesk-measure-btn.active {
  border: 1px solid rgba(203, 213, 225, 0.8) !important;
  background: #ffffff !important;
  box-shadow: var(--ui-shadow-active) !important;
  color: var(--ui-accent) !important;
}

.autodesk-measure-btn.active svg {
  stroke: var(--ui-accent) !important;
  color: var(--ui-accent) !important;
}

.autodesk-measure-btn svg {
  stroke: currentColor;
  color: currentColor;
}

.autodesk-measure-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}

.autodesk-measure-label {
  display: none;
}

.autodesk-measure-divider {
  width: 1px;
  height: 22px;
  background: var(--ui-border-strong) !important;
  margin: 0 3px;
}

.autodesk-measure-clear-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  color: var(--ui-text-secondary);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.14s ease;
}

.autodesk-measure-clear-btn:hover {
  background: #ffffff;
  border-color: var(--ui-border-strong);
  color: var(--ui-text-primary);
  box-shadow: var(--ui-shadow-active);
}

/* Bottom Dock — Clean Segmented Pill Style */
.bim-bottom-dock {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 3px;
  background: var(--ui-bg-pill);
  border: 1px solid var(--ui-border-strong);
  padding: 4px;
  border-radius: 12px;
  box-shadow: var(--ui-shadow-window);
  z-index: 95;
  user-select: none;
}

.bim-dock-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  width: 36px;
  height: 34px;
  padding: 0;
  color: var(--ui-text-secondary);
  cursor: pointer;
  transition: all 0.14s ease;
}

.bim-dock-btn:hover {
  color: var(--ui-text-primary);
  background: rgba(255, 255, 255, 0.5);
}

.bim-dock-btn.active {
  background: #ffffff;
  border-color: rgba(203, 213, 225, 0.8);
  color: var(--ui-accent);
  box-shadow: var(--ui-shadow-active);
}

.bim-dock-icon {
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bim-dock-label,
#lblCurrentUser {
  display: none;
}

.bim-dock-divider {
  width: 1px;
  height: 20px;
  background: var(--ui-border-strong);
  margin: 0 2px;
}

/* 2D Measurement Pin & Distance Labels on 3D Canvas */
.measure-badge-2d {
  position: absolute;
  transform: translate(-50%, -100%);
  background: #ffffff;
  border: 1px solid var(--ui-border-strong);
  color: var(--ui-text-primary);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 11.5px;
  font-weight: 600;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  white-space: nowrap;
  pointer-events: none;
  box-shadow: var(--ui-shadow-window);
  z-index: 60;
}

/* Gathering Cloud / Autodesk Distance & Orthogonal Delta (X, Y, Z) Badges */
.autodesk-dist-badge {
  position: absolute;
  pointer-events: none !important;
  cursor: default;
  z-index: 62;
  background: #0084ff;
  color: #ffffff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 132, 255, 0.45);
  white-space: nowrap;
  user-select: none;
  transform: translate(-50%, -50%);
  transition: transform 0.15s ease, filter 0.15s ease;
}

.autodesk-delta-badge {
  position: absolute;
  pointer-events: none !important;
  cursor: default;
  z-index: 61;
  display: flex;
  align-items: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
  border-radius: 10px;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  user-select: none;
  transform: translate(-50%, -50%);
  transition: transform 0.15s ease, filter 0.15s ease;
}

.autodesk-delta-axis {
  padding: 2px 6px;
  color: #ffffff;
  font-weight: 700;
}
.autodesk-delta-axis.axis-x { background: #ef4444; }
.autodesk-delta-axis.axis-y { background: #10b981; }
.autodesk-delta-axis.axis-z { background: #3b82f6; }

.autodesk-delta-val {
  background: #ffffff;
  color: #0099ff;
  padding: 2px 8px;
}

/* ============================================================================
 * 5. Right-Side Surveying & Engineering Inspector Panel (Clean Slate-White)
 * ============================================================================ */
.gs-side-panel {
  position: absolute;
  top: 66px;
  right: 16px;
  width: 360px;
  max-height: calc(100vh - 150px);
  overflow-y: auto;
  background: var(--ui-bg-window);
  backdrop-filter: blur(14px);
  border: 1px solid var(--ui-border-strong);
  border-radius: 12px;
  box-shadow: var(--ui-shadow-window);
  padding: 14px;
  z-index: 90;
  display: none;
  color: var(--ui-text-primary);
}

.gs-side-panel.active {
  display: block;
}

.gs-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--ui-border);
  padding-bottom: 9px;
  margin-bottom: 12px;
}

.gs-panel-title {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--ui-text-primary);
  display: flex;
  align-items: center;
  gap: 7px;
}

.gs-form-group {
  margin-bottom: 10px;
}

.gs-form-group label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--ui-text-secondary);
  margin-bottom: 4px;
}

.gs-input, .gs-select {
  width: 100%;
  background: var(--ui-bg-subtle);
  border: 1px solid var(--ui-border-strong);
  color: var(--ui-text-primary);
  padding: 6px 9px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
}

.gs-metric-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin: 10px 0;
}

.gs-metric-box {
  background: var(--ui-bg-subtle);
  border: 1px solid var(--ui-border);
  border-radius: 8px;
  padding: 8px 10px;
}

.gs-metric-box .lbl {
  font-size: 10.5px;
  color: var(--ui-text-muted);
  font-weight: 600;
}

.gs-metric-box .val {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ui-text-primary);
  margin-top: 2px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

/* ============================================================================
 * 6. Multi-Date Split Curtain Slider View
 * ============================================================================ */
.gs-compare-stage {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: #0b0f19;
}

.gs-compare-layer {
  position: absolute;
  inset: 0;
}

#compareRightLayer {
  clip-path: inset(0 0 0 50%);
}

.gs-curtain-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: #ffffff;
  box-shadow: 0 0 8px rgba(15, 23, 42, 0.5);
  cursor: ew-resize;
  z-index: 120;
  transform: translateX(-50%);
}

.gs-curtain-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid var(--ui-border-strong);
  color: var(--ui-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--ui-shadow-window);
}

.gs-compare-hud {
  position: absolute;
  top: 14px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 130;
  pointer-events: none;
}

.gs-compare-hud > * {
  pointer-events: auto;
}

.gs-epoch-badge {
  background: var(--ui-bg-window);
  border: 1px solid var(--ui-border-strong);
  border-radius: 10px;
  padding: 6px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--ui-shadow-window);
  color: var(--ui-text-primary);
}

.gs-compare-legend {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 40;
  background: var(--ui-bg-window);
  border: 1px solid var(--ui-border-strong);
  border-radius: 10px;
  padding: 7px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--ui-shadow-window);
  color: var(--ui-text-primary);
  font-size: 11.5px;
  font-weight: 600;
}

/* ============================================================================
 * 7. Modals (Queue Monitor, Sharing Controls, Offline Cache Settings)
 * ============================================================================ */
.gs-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.gs-modal-backdrop.active {
  display: flex;
}

.gs-modal {
  background: #ffffff;
  border: 1px solid var(--ui-border-strong);
  border-radius: 12px;
  width: 100%;
  max-width: 760px;
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.25);
  padding: 18px 20px;
  color: var(--ui-text-primary);
}

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

.gs-table th, .gs-table td {
  border-bottom: 1px solid var(--ui-border);
  padding: 8px 10px;
  text-align: left;
  color: var(--ui-text-primary);
}

.gs-table th {
  color: var(--ui-text-secondary);
  font-weight: 600;
  background: var(--ui-bg-subtle);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.gs-toast {
  position: fixed;
  bottom: 22px;
  right: 22px;
  background: #ffffff;
  border: 1px solid var(--ui-border-strong);
  color: var(--ui-text-primary);
  padding: 9px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  box-shadow: var(--ui-shadow-window);
  z-index: 2000;
  display: none;
}

/* ============================================================================
 * 8. Site Selected Split View: Top 1/3 Timeline Tiles + Bottom 2/3 3D Preview
 * ============================================================================ */
.gs-site-timeline-split {
  position: absolute;
  inset: 0;
  z-index: 650;
  display: none;
  flex-direction: column;
  background: #0f172a;
}

.gs-site-timeline-split.active {
  display: flex;
}

.gs-site-timeline-top {
  height: 33.333%;
  min-height: 214px;
  max-height: 256px;
  background: #ffffff;
  border-bottom: 1px solid var(--ui-border-strong);
  display: flex;
  flex-direction: column;
  padding: 10px 16px 10px 16px;
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.12);
  z-index: 25;
}

.gs-timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--ui-border);
  flex-shrink: 0;
}

.gs-timeline-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.gs-timeline-header-right {
  display: flex;
  align-items: center;
  gap: 6px;
}

.gs-timeline-site-title {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ui-text-primary);
  letter-spacing: -0.01em;
}

.gs-timeline-site-sub {
  font-size: 11px;
  color: var(--ui-text-muted);
  margin-top: 1px;
}

.gs-timeline-track {
  flex: 1;
  display: flex;
  align-items: stretch;
  gap: 12px;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 8px 2px 4px 2px;
  position: relative;
}

.gs-timeline-tile {
  width: 244px;
  flex-shrink: 0;
  border-radius: 10px;
  border: 1.5px solid var(--ui-border);
  background: #f8fafc;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: all 0.16s ease;
  position: relative;
  user-select: none;
}

.gs-timeline-tile:hover {
  border-color: #94a3b8;
  background: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(15, 23, 42, 0.08);
}

.gs-timeline-tile.active {
  border-color: var(--ui-accent);
  background: #ffffff;
  box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.2), 0 6px 16px rgba(2, 132, 199, 0.12);
}

.gs-tile-thumb-wrap {
  position: relative;
  width: 100%;
  height: 90px;
  background: #0f172a;
  overflow: hidden;
  flex-shrink: 0;
}

.gs-tile-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.22s ease;
}

.gs-timeline-tile:hover .gs-tile-thumb {
  transform: scale(1.03);
}

.gs-tile-badge-row {
  position: absolute;
  top: 6px;
  left: 6px;
  right: 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
}

.gs-tile-chip {
  background: rgba(15, 23, 42, 0.78);
  color: #f8fafc;
  font-size: 9.5px;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.gs-tile-chip.active-indicator {
  background: var(--ui-accent);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.35);
}

.gs-tile-meta {
  padding: 7px 10px 8px 10px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex: 1;
  gap: 3px;
}

.gs-tile-date-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.gs-tile-date {
  font-size: 11.5px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--ui-text-primary);
}

.gs-tile-uploader {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 600;
  color: var(--ui-accent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.gs-tile-name {
  font-size: 10.5px;
  color: var(--ui-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Bottom 2/3 Interactive 3D Scan Preview Pane */
.gs-site-preview-bottom {
  height: 66.667%;
  flex: 1;
  position: relative;
  background: #0b1120;
  overflow: hidden;
}

#sitePreviewCanvasContainer {
  width: 100%;
  height: 100%;
  position: relative;
}

.gs-preview-hud-top-left {
  position: absolute;
  top: 14px;
  left: 16px;
  z-index: 40;
  pointer-events: auto;
}

/* Icon-Only Enlarge Button (Strictly 0 words, only icon) */
.gs-preview-enlarge-btn {
  position: absolute;
  top: 14px;
  right: 16px;
  z-index: 45;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 11px;
  background: #ffffff;
  border: 1.5px solid var(--ui-border-strong);
  color: var(--ui-text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.24);
  transition: all 0.16s ease;
}

.gs-preview-enlarge-btn:hover {
  background: var(--ui-accent);
  border-color: var(--ui-accent);
  color: #ffffff;
  transform: scale(1.05);
  box-shadow: 0 10px 28px rgba(2, 132, 199, 0.38);
}

.gs-preview-enlarge-btn svg {
  stroke: currentColor;
  pointer-events: none;
}