/* ═══════════════════════════════════════════════════════════
   3D VIEWER SECTION
   ═══════════════════════════════════════════════════════════ */

.viewer3d {
  background: var(--dark-primary);
  position: relative;
  overflow: hidden;
}

.viewer3d-wrapper {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-6);
  align-items: stretch;
}

.viewer3d-canvas-container {
  position: relative;
  background: rgba(10, 15, 28, 0.5);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 16/10;
}

.viewer3d-canvas-container canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
}

.viewer3d-controls {
  position: absolute;
  bottom: var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-2);
  background: rgba(10, 15, 28, 0.8);
  backdrop-filter: blur(12px);
  padding: var(--space-2);
  border-radius: var(--radius-lg);
  border: 1px solid var(--dark-border);
}

.viewer3d-control-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.viewer3d-control-btn:hover,
.viewer3d-control-btn.active {
  background: rgba(200, 164, 92, 0.15);
  color: var(--gold-primary);
}

.viewer3d-control-btn i {
  width: 18px;
  height: 18px;
}

.viewer3d-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--dark-card);
  z-index: 10;
  transition: opacity 0.5s ease;
}

.viewer3d-loading.hidden {
  opacity: 0;
  pointer-events: none;
}

.viewer3d-loading-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--dark-border);
  border-top-color: var(--gold-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Sidebar Info Panel */
.viewer3d-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  height: 100%;
}

.viewer3d-project-tabs {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.viewer3d-tab {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  background: rgba(26, 31, 46, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.viewer3d-tab:hover {
  color: var(--text-secondary);
  border-color: var(--gold-muted);
}

.viewer3d-tab.active {
  background: rgba(200, 164, 92, 0.15);
  border-color: var(--gold-primary);
  color: var(--gold-primary);
}

.viewer3d-info-card {
  background: rgba(26, 31, 46, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex: 1; /* Stretch to fill vertical space */
  box-shadow: var(--shadow-md);
}

.viewer3d-info-card h4 {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.viewer3d-info-card h4::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--gold-primary);
  border-radius: 50%;
  box-shadow: var(--gold-glow);
}

.viewer3d-info-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.viewer3d-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-top: auto; /* Push specs to the bottom */
}

.viewer3d-spec {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: rgba(10, 15, 28, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
}

.viewer3d-spec:hover {
  border-color: rgba(200, 164, 92, 0.2);
  background: rgba(10, 15, 28, 0.6);
}

.viewer3d-spec i {
  width: 16px;
  height: 16px;
  color: var(--gold-primary);
  flex-shrink: 0;
}

.viewer3d-spec-label {
  color: var(--text-muted);
}

.viewer3d-spec-value {
  color: var(--text-primary);
  font-weight: 700;
  margin-left: auto;
}

.viewer3d-floor-info {
  background: rgba(26, 31, 46, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}

.viewer3d-floor-info h5 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-base);
  margin-bottom: var(--space-3);
  color: var(--gold-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.viewer3d-cta-group {
  display: flex;
  gap: var(--space-3);
  margin-top: auto;
}

.viewer3d-cta-group .btn {
  flex: 1;
  justify-content: center;
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4);
}

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 1024px) {
  .viewer3d-wrapper {
    grid-template-columns: 1fr;
  }

  .viewer3d-canvas-container {
    aspect-ratio: 16/9;
  }
}

@media (max-width: 640px) {
  .viewer3d-controls {
    flex-wrap: wrap;
    justify-content: center;
  }

  .viewer3d-specs {
    grid-template-columns: 1fr;
  }
}