/* ==========================================================================
   FORMA 3D STUDIO - 3D PREVIEW STAGE
   Clean, Minimal, Modern WebGL Viewer (Responsive on All Devices)
   ========================================================================== */

.viewer-section {
  padding: 64px 0;
  position: relative;
}

.viewer-stage-container {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 24px;
  background: var(--bg-glass-card);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--border-medium);
  border-top: 1px solid var(--border-top-specular);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  box-shadow: 0 16px 48px -12px rgba(0, 0, 0, 0.65);
}

@media (max-width: 1024px) {
  .viewer-stage-container {
    grid-template-columns: 1fr;
  }
}

/* 3D Canvas Area */
.viewer-viewport-wrap {
  position: relative;
  width: 100%;
  min-height: 480px;
  background: radial-gradient(circle at 50% 50%, #171A21 0%, #0A0C0F 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.viewer-viewport-wrap.drag-over {
  box-shadow: inset 0 0 0 2px var(--accent-primary), 0 8px 24px rgba(0, 0, 0, 0.5);
}

.viewer-drop-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 12, 16, 0.88);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--accent-primary);
  font-weight: 600;
  font-size: 1rem;
  z-index: 20;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--trans-fast), visibility var(--trans-fast);
}

.viewer-viewport-wrap.drag-over .viewer-drop-overlay {
  opacity: 1;
  visibility: visible;
}

#three-canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
  outline: none;
  cursor: grab;
}

#three-canvas:active {
  cursor: grabbing;
}

/* Clean 360° Studio Showcase Badges (User-Friendly & High-End) */
.viewer-feature-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(12, 14, 18, 0.85);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-medium);
  border-radius: 9999px;
  padding: 6px 14px;
  font-size: 0.78125rem;
  font-weight: 600;
  color: var(--text-primary);
  pointer-events: none;
  z-index: 5;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.viewer-feature-badge .pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-primary);
}

.viewer-feature-badge .badge-divider {
  color: var(--text-dim);
}

/* User-Friendly Drag Hint Pill */
.viewer-hint-pill {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(12, 14, 18, 0.78);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  padding: 6px 14px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  pointer-events: none;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 7px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

.viewer-hint-pill svg {
  color: var(--accent-primary);
}

/* Clean Viewer Controls Toolbar */
.viewer-toolbar {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(18, 20, 26, 0.9);
  backdrop-filter: blur(12px);
  padding: 6px 12px;
  border-radius: 9999px;
  border: 1px solid var(--border-medium);
  z-index: 10;
}

.tool-btn {
  padding: 6px 12px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid transparent;
  border-radius: 9999px;
  transition: color var(--trans-fast), background-color var(--trans-fast), border-color var(--trans-fast), box-shadow var(--trans-fast), transform var(--trans-fast);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

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

.tool-btn.active {
  color: var(--accent-primary);
  background: var(--accent-primary-subtle);
  border-color: var(--accent-primary);
}

/* Right-side Inspector Spec Sidebar */
.viewer-sidebar {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-left: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

@media (max-width: 1024px) {
  .viewer-sidebar {
    border-left: none;
    border-top: 1px solid var(--border-subtle);
  }
}

.viewer-product-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.viewer-material-picker {
  margin: 16px 0;
}

.material-select-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 8px;
}

.mat-option-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-align: left;
  transition: border-color var(--trans-fast), color var(--trans-fast), transform var(--trans-fast), background-color var(--trans-fast);
}

.mat-option-btn:hover {
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.mat-option-btn.active {
  border-color: var(--accent-primary);
  color: var(--text-primary);
  background: var(--accent-primary-subtle);
}

.mat-color-disc {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Mobile & Touch Optimizations */
@media (max-width: 640px) {
  .viewer-section {
    padding: 40px 0;
  }
  .viewer-viewport-wrap {
    min-height: 330px;
    touch-action: pan-y;
  }
  .viewer-toolbar {
    bottom: 10px;
    padding: 4px 8px;
    gap: 4px;
    max-width: 95%;
  }
  .tool-btn {
    padding: 6px 10px;
    font-size: 0.75rem;
  }
  .viewer-sidebar {
    padding: 20px 16px;
  }
  .material-select-grid {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }
}

/* User-Friendly Quick Steps Bar */
.viewer-quick-steps {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.step-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 9999px;
  padding: 6px 14px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--trans-fast);
}

.step-chip:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

.step-chip .step-num {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-primary-subtle);
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
  font-size: 0.72rem;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Friendly Explanation Box in Sidebar */
.viewer-explain-box {
  background: var(--accent-primary-subtle);
  border: 1px solid var(--accent-primary);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 18px;
}

.viewer-explain-box strong {
  display: block;
  color: var(--accent-primary);
  margin-bottom: 4px;
}

/* ==========================================================================
   FORMA 3D STUDIO - 3D VIEWER PRICE ESTIMATOR
   Interactive Price Estimation Widget (Clean, Pure Pricing Focus)
   ========================================================================== */

.viewer-print-calc {
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.calc-header {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.calc-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.calc-subtitle {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Price Hero Display */
.calc-price-hero {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.12) 0%, rgba(13, 15, 19, 0.95) 100%);
  border: 1px solid rgba(0, 240, 255, 0.35);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.calc-price-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.calc-price-value-row {
  text-align: right;
}

.calc-price-main {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--accent-primary);
  line-height: 1.1;
  display: block;
}

.calc-price-gst {
  font-size: 0.6875rem;
  color: var(--text-dim);
}

/* Controls */
.calc-control {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.calc-label-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.8125rem;
}

.calc-label-title {
  font-weight: 600;
  color: var(--text-primary);
}

.calc-val-pill {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-primary);
  background: rgba(0, 240, 255, 0.08);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid rgba(0, 240, 255, 0.2);
}

/* Infill Range Slider */
.calc-range-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: #232834;
  border-radius: 9999px;
  outline: none;
  cursor: pointer;
  transition: background 0.2s;
}

.calc-range-slider:focus-visible {
  box-shadow: 0 0 0 2px var(--accent-primary);
}

.calc-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.45);
  transition: transform 0.15s ease;
}

.calc-range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.calc-range-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.45);
}

.calc-range-steps {
  display: flex;
  justify-content: space-between;
  font-size: 0.6875rem;
  color: var(--text-dim);
  margin-top: -2px;
}

/* Resolution Pills */
.calc-layer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.calc-layer-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 8px 4px;
  background: var(--bg-primary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  touch-action: manipulation;
  user-select: none;
  transition: border-color var(--trans-fast), color var(--trans-fast), background-color var(--trans-fast), transform var(--trans-fast);
}

.calc-layer-btn:active {
  transform: scale(0.97);
}

@media (hover: hover) and (pointer: fine) {
  .calc-layer-btn:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
    background: rgba(0, 240, 255, 0.05);
  }
}

.calc-layer-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-primary);
}

.calc-layer-btn.active {
  background: var(--accent-primary-subtle);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.calc-layer-sub {
  font-size: 0.65rem;
  font-weight: 400;
  opacity: 0.8;
}

/* Secondary Specs Row */
.calc-specs-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.calc-spec-pill {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
}

.calc-spec-pill .spec-name {
  color: var(--text-dim);
}

.calc-spec-pill .spec-val {
  font-weight: 700;
  color: var(--text-primary);
}

/* Action button row */
.calc-footer-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.calc-slicer-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 12px;
  background: transparent;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
}

.calc-slicer-link:hover {
  background: rgba(0, 240, 255, 0.1);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.calc-slicer-link:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-primary);
}

/* Bambu Lab A1 Model Selector Dropdown & Action Chips */
.model-dropdown-menu {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.model-item-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 8px 10px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: all var(--trans-fast);
}

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

.model-item-btn.active {
  background: var(--accent-primary-subtle);
  border-color: rgba(0, 240, 255, 0.3);
  color: var(--accent-primary);
  font-weight: 600;
}

.model-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.model-item-btn.active .model-badge {
  background: rgba(0, 240, 255, 0.2);
  color: var(--accent-primary);
}