/* ==========================================================================
   CONDO STUDIO 3D - Architectural BIM & Walkthrough Visualizer
   Design System: Deep Slate, Glassmorphism, Precision Metric CAD Typography
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&family=Outfit:wght@500;600;700;800&display=swap');

:root {
  /* Color Palette */
  --bg-darkest: #090c12;
  --bg-darker: #0f131c;
  --bg-card: rgba(21, 27, 39, 0.85);
  --bg-card-solid: #151b27;
  --bg-card-hover: rgba(30, 39, 56, 0.9);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: #38bdf8;

  --accent-cyan: #38bdf8;
  --accent-cyan-glow: rgba(56, 189, 248, 0.25);
  --accent-amber: #f59e0b;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --header-height: 58px;
  --status-height: 32px;
  --panel-width: 320px;
  --toolbar-width: 58px;

  --shadow-lg: 0 16px 36px -8px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.05);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-darkest);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  display: flex;
  flex-direction: column;
}

/* ------------------- Top Navigation Header ------------------- */

.app-header {
  height: var(--header-height);
  background: rgba(15, 19, 28, 0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 50;
}

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

.brand-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, #0284c7, #38bdf8);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 0 16px var(--accent-cyan-glow);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: linear-gradient(180deg, #ffffff, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tag {
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

/* Project Title & Ceiling Height */
.project-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255, 255, 255, 0.04);
  padding: 4px 12px;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
}

.project-name-input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  outline: none;
  min-width: 140px;
}
.project-name-input:focus {
  color: var(--accent-cyan);
}

.ceiling-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-secondary);
  border-left: 1px solid var(--border-subtle);
  padding-left: 10px;
}

.ceiling-input {
  width: 52px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 4px;
  text-align: right;
  outline: none;
}
.ceiling-input:focus {
  border-color: var(--accent-cyan);
}

/* Center Mode Switcher Pill */
.mode-switcher {
  display: flex;
  background: rgba(0, 0, 0, 0.45);
  padding: 4px;
  border-radius: 28px;
  border: 1px solid var(--border-subtle);
  gap: 4px;
}

.mode-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 20px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.mode-btn:hover {
  color: var(--text-primary);
}

.mode-btn.active {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(2, 132, 199, 0.35);
}

/* Language Toggle Pill */
.lang-toggle {
  display: flex;
  background: rgba(0, 0, 0, 0.45);
  padding: 3px;
  border-radius: 20px;
  border: 1px solid var(--border-subtle);
  gap: 2px;
}

.lang-btn {
  padding: 4px 8px;
  border-radius: 14px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.lang-btn:hover {
  color: var(--text-primary);
}

.lang-btn.active {
  background: rgba(56, 189, 248, 0.18);
  color: var(--accent-cyan);
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: 0 0 10px var(--accent-cyan-glow);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  color: var(--text-primary);
  transition: all 0.15s ease;
}

.btn:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7, #38bdf8);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 2px 12px var(--accent-cyan-glow);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1, #0ea5e9);
  border-color: transparent;
}

.btn-export-glb {
  background: linear-gradient(135deg, #059669, #10b981);
  border-color: transparent;
  color: #ffffff;
  box-shadow: 0 2px 12px rgba(16, 185, 129, 0.3);
}
.btn-export-glb:hover {
  background: linear-gradient(135deg, #047857, #059669);
}

/* ------------------- Main App Workspace ------------------- */

.app-workspace {
  flex: 1;
  display: flex;
  position: relative;
  overflow: hidden;
}

/* Viewport Containers */
.viewport-container {
  flex: 1;
  position: relative;
  background-color: var(--bg-darkest);
  overflow: hidden;
}

#viewport-2d {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

#cad-canvas,
#viewport-3d canvas {
  touch-action: none;
}

#viewport-3d {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  display: none;
}

/* ------------------- Left CAD Drawing Toolbar ------------------- */

.toolbar-left {
  position: absolute;
  top: 16px;
  left: 16px;
  width: 50px;
  background: rgba(15, 19, 28, 0.9);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  padding: 6px;
  gap: 4px;
  z-index: 30;
  box-shadow: var(--shadow-lg);
}

.tool-btn {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: all 0.15s ease;
}

.tool-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

.tool-btn.active {
  background: rgba(56, 189, 248, 0.18);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan-glow);
}

.toolbar-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 4px 2px;
}

/* Tooltips */
[data-tooltip] {
  position: relative;
}
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  background: #1e293b;
  color: #fff;
  font-size: 11px;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 6px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  z-index: 100;
}
[data-tooltip]:hover::after {
  opacity: 1;
  visibility: visible;
}

/* ------------------- Snapping & Precision Floating Bar ------------------- */

.snapping-bar {
  position: absolute;
  bottom: 48px;
  left: 16px;
  background: rgba(15, 19, 28, 0.9);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  z-index: 30;
  box-shadow: var(--shadow-sm);
}

.snap-pill {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}
.snap-pill:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}
.snap-pill.active {
  color: var(--accent-amber);
  background: rgba(245, 158, 11, 0.12);
  border-color: rgba(245, 158, 11, 0.3);
}

/* ------------------- Right Properties Inspector Panel ------------------- */

.inspector-panel {
  width: var(--panel-width);
  background: rgba(15, 19, 28, 0.95);
  backdrop-filter: blur(16px);
  border-left: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  z-index: 30;
  overflow-y: auto;
}

.panel-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.panel-title {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.panel-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.property-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.prop-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.prop-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.prop-input {
  width: 100%;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 6px 10px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  outline: none;
  transition: border-color 0.15s ease;
}
.prop-input:focus {
  border-color: var(--accent-cyan);
}

.prop-select {
  width: 100%;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 6px 10px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 12px;
  outline: none;
  cursor: pointer;
}
.prop-select:focus {
  border-color: var(--accent-cyan);
}

.btn-chips {
  display: flex;
  gap: 6px;
  width: 100%;
}

.chip-btn {
  flex: 1;
  padding: 5px 6px;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s ease;
}
.chip-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}
.chip-btn.active {
  border-color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  font-weight: 600;
}

.color-palette-row {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
  padding: 2px 0;
}

.color-swatch {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 2px solid rgba(255, 255, 255, 0.18);
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  position: relative;
  flex-shrink: 0;
  background-clip: padding-box;
}

.color-swatch:hover {
  transform: scale(1.15);
  border-color: rgba(255, 255, 255, 0.7);
  z-index: 2;
}

.color-swatch.active {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.45);
  transform: scale(1.12);
}

.color-swatch-reset {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.05);
}

.color-input-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
}

.color-picker-input {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  width: 32px;
  height: 28px;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  padding: 0;
  outline: none;
  transition: border-color 0.15s ease;
}

.color-picker-input::-webkit-color-swatch-wrapper {
  padding: 2px;
}

.color-picker-input::-webkit-color-swatch {
  border: none;
  border-radius: 4px;
}

.color-picker-input:hover {
  border-color: var(--accent-cyan);
}

/* ------------------- 3D Walkthrough Floating Overlay ------------------- */

.overlay-3d {
  position: absolute;
  top: 16px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  pointer-events: none;
  z-index: 40;
}

.bar-3d {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(15, 19, 28, 0.88);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 6px 10px;
  pointer-events: auto;
  box-shadow: var(--shadow-lg);
}

.walk-hud-hint {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 19, 28, 0.92);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 10px 18px;
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-primary);
  font-size: 12px;
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  z-index: 40;
}

.kbd-badge {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-cyan);
}

.walk-crosshair {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  transform: translate(-50%, -50%);
  pointer-events: none;
  display: none;
  z-index: 35;
}
.walk-crosshair::before,
.walk-crosshair::after {
  content: '';
  position: absolute;
  background: rgba(255, 255, 255, 0.7);
}
.walk-crosshair::before {
  top: 4px;
  left: 0;
  width: 10px;
  height: 2px;
}
.walk-crosshair::after {
  top: 0;
  left: 4px;
  width: 2px;
  height: 10px;
}

/* ------------------- Bottom Status Bar ------------------- */

.app-status-bar {
  height: var(--status-height);
  background: var(--bg-darker);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  z-index: 50;
}

.status-coords {
  color: var(--accent-cyan);
  font-weight: 500;
}

.status-hint {
  color: var(--text-secondary);
  font-family: var(--font-sans);
}

/* ------------------- Modals & Dialogs ------------------- */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-window {
  background: var(--bg-card-solid);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  width: 90%;
  max-width: 680px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  overflow: hidden;
  transform: scale(0.96);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-backdrop.open .modal-window {
  transform: scale(1);
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  display: flex;
}
.modal-close-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  background: rgba(0, 0, 0, 0.2);
}

/* Catalog Grid */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 12px;
}

.catalog-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.catalog-card:hover {
  background: rgba(56, 189, 248, 0.1);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}
.catalog-card.selected {
  background: rgba(56, 189, 248, 0.18);
  border-color: var(--accent-cyan);
}

.catalog-icon {
  width: 44px;
  height: 44px;
  background: rgba(0, 0, 0, 0.35);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
}

.catalog-name {
  font-size: 11px;
  font-weight: 600;
  text-align: center;
  color: var(--text-primary);
}

.catalog-dims {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

/* Upload Dropzone */
.dropzone {
  border: 2px dashed rgba(255, 255, 255, 0.18);
  border-radius: 12px;
  padding: 32px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  cursor: pointer;
  background: rgba(0, 0, 0, 0.2);
  transition: all 0.2s ease;
}
.dropzone:hover,
.dropzone.dragover {
  border-color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.08);
}

.dropzone-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
}

.dropzone-text {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.dropzone-sub {
  font-size: 11px;
  color: var(--text-muted);
}

/* Custom GLB Model Library Items */
.custom-item-card {
  position: relative;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.custom-item-card:hover {
  background: rgba(56, 189, 248, 0.1);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

.custom-item-thumb-box {
  width: 76px;
  height: 64px;
  background: rgba(0, 0, 0, 0.4);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4px;
}

.custom-item-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.6));
}

.custom-item-delete-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(15, 19, 28, 0.85);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
  z-index: 10;
}

.custom-item-delete-btn:hover {
  background: #ef4444;
  border-color: #ef4444;
  color: #ffffff;
  transform: scale(1.15);
}

.custom-empty-state {
  grid-column: 1 / -1;
  padding: 32px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.6;
  border: 1px dashed rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.15);
}

/* ------------------- Skybox Photosphere Preview ------------------- */

.skybox-preview-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 12px;
}

.skybox-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.skybox-canvas-wrap {
  position: relative;
  width: 100%;
  height: 155px;
  border-radius: 8px;
  overflow: hidden;
  background: #090c12;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

#skybox-preview-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

#skybox-preview-canvas:active {
  cursor: grabbing;
}

.skybox-center-guide {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  background: rgba(56, 189, 248, 0.7);
  pointer-events: none;
  display: flex;
  justify-content: center;
}

.skybox-center-pill {
  position: absolute;
  top: 6px;
  background: rgba(15, 19, 28, 0.92);
  color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  white-space: nowrap;
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
}