.jb-roof-build-animation {
  --jb-bg-dark: #101415;
  --jb-surface: #191c1e;
  --jb-surface-variant: #262a2d;
  --jb-border: rgba(255, 255, 255, 0.09);
  --jb-gold: #ffca45;
  --jb-gold-dim: #f59e0b;
  --jb-text-primary: #e0e3e5;
  --jb-text-muted: #9ca3af;
  --jb-accent-blue: #38bdf8;
  --jb-radius: 12px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--jb-text-primary);
  background-color: var(--jb-bg-dark);
  border: 1px solid var(--jb-border);
  border-radius: var(--jb-radius);
  padding: 30px 22px;
  margin: 30px auto;
  max-width: 1200px;
  box-sizing: border-box;
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  position: relative;
}
.jb-roof-build-animation * { box-sizing: border-box; }
.jb-roof-build-header { text-align: center; margin-bottom: 22px; }
.jb-roof-build-badge {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(255, 202, 69, 0.12);
  border: 1px solid rgba(255, 202, 69, 0.35);
  border-radius: 20px;
  color: var(--jb-gold);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.jb-roof-build-title { font-size: 26px; font-weight: 700; line-height: 1.25; color: #fff; margin: 0 0 8px; }
.jb-roof-build-subtitle { font-size: 14px; color: var(--jb-text-muted); max-width: 700px; margin: 0 auto; line-height: 1.5; }
.jb-roof-build-nav {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin-bottom: 22px;
  background: rgba(0, 0, 0, 0.25);
  padding: 6px;
  border-radius: 10px;
  border: 1px solid var(--jb-border);
}
.step-tab.step-button {
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 10px 6px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  transition: all 0.25s ease;
  min-height: 56px;
  color: var(--jb-text-muted);
}
.step-tab.step-button:hover { background: rgba(255, 255, 255, 0.05); color: #fff; }
.step-tab.step-button.active {
  background: var(--jb-surface-variant);
  border-color: rgba(255, 202, 69, 0.4);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}
.step-tab .step-num { font-size: 11px; font-weight: 800; color: var(--jb-gold); }
.step-tab .step-label { font-size: 12px; font-weight: 600; text-align: center; line-height: 1.2; }
.jb-roof-build-body { display: grid; grid-template-columns: 1.25fr 1fr; gap: 22px; align-items: start; }
.jb-roof-build-viewport {
  background: #0b0f10;
  border: 1px solid var(--jb-border);
  border-radius: 10px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.6);
}
.jb-roof-svg { width: 100%; height: auto; max-height: 420px; display: block; }
.roof-layer {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.35s ease-out, transform 0.35s ease-out;
  pointer-events: none;
}
.roof-layer.is-visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.roof-layer.is-highlighted { filter: drop-shadow(0 0 6px rgba(255, 202, 69, 0.45)); }
.jb-viewport-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.jb-play-pause-btn {
  background: var(--jb-surface-variant);
  border: 1px solid var(--jb-border);
  border-radius: 6px;
  padding: 5px 12px;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.2s;
}
.jb-play-pause-btn:hover { background: rgba(255, 202, 69, 0.15); border-color: var(--jb-gold); color: var(--jb-gold); }
.jb-progress-track { flex: 1; height: 4px; background: rgba(255, 255, 255, 0.1); border-radius: 2px; overflow: hidden; }
.jb-progress-fill { height: 100%; width: 0%; background: var(--jb-gold); border-radius: 2px; }
.jb-mode-toggle { font-size: 11px; color: var(--jb-text-muted); cursor: pointer; }
.jb-mode-toggle label { cursor: pointer; display: flex; align-items: center; gap: 5px; color: var(--jb-text-primary) !important; }
.jb-mode-toggle input { accent-color: var(--jb-gold); cursor: pointer; }
.jb-roof-build-info-container { position: relative; min-height: 420px; }
.jb-info-card {
  display: none;
  background: var(--jb-surface);
  border: 1px solid var(--jb-border);
  border-radius: 10px;
  padding: 22px;
  animation: jbFadeIn 0.3s ease-out forwards;
}
.jb-info-card.active { display: block; }
@keyframes jbFadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
.jb-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.jb-step-counter { font-size: 12px; font-weight: 700; color: var(--jb-gold); }
.jb-code-callout-badge {
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--jb-accent-blue);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 12px;
}
.jb-card-title { font-size: 18px; font-weight: 700; color: #fff; margin: 0 0 12px; line-height: 1.3; }
.jb-card-desc { font-size: 13px; line-height: 1.55; color: var(--jb-text-primary); margin-bottom: 16px; }
.jb-spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
  background: rgba(0, 0, 0, 0.2);
  padding: 12px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}
.jb-spec-item { font-size: 12px; }
.jb-spec-label { display: block; color: var(--jb-text-muted); font-size: 10px; font-weight: 600; text-transform: uppercase; margin-bottom: 2px; }
.jb-spec-value { color: #fff; font-weight: 600; }
.jb-defense-box {
  background: rgba(255, 202, 69, 0.06);
  border-left: 3px solid var(--jb-gold);
  padding: 10px 12px;
  border-radius: 0 6px 6px 0;
}
.jb-defense-title { font-size: 11px; font-weight: 700; color: var(--jb-gold); text-transform: uppercase; margin-bottom: 3px; }
.jb-defense-text { font-size: 12px; line-height: 1.45; color: var(--jb-text-primary); margin: 0; }
.jb-roof-build-footer {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--jb-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.jb-footer-callout { display: flex; flex-direction: column; gap: 3px; }
.jb-footer-badge { font-size: 13px; font-weight: 700; color: var(--jb-gold); }
.jb-footer-text { font-size: 12px; color: var(--jb-text-muted); }
.jb-cta-btn {
  background-color: #ffca45 !important;
  background-image: linear-gradient(135deg, #ffca45 0%, #f59e0b 100%) !important;
  color: #101415 !important;
  font-weight: 700;
  font-size: 14px;
  padding: 12px 22px;
  border-radius: 8px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
}
.jb-cta-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(245, 158, 11, 0.45); }
@media (max-width: 991px) {
  .jb-roof-build-body { grid-template-columns: 1fr; }
  .jb-roof-build-info-container { min-height: auto; }
  .jb-roof-build-footer { flex-direction: column; text-align: center; }
  .jb-cta-btn { justify-content: center; }
}
@media (max-width: 767px) {
  .jb-roof-build-animation { padding: 18px 12px; }
  .jb-roof-build-title { font-size: 20px; }
  .jb-roof-build-nav { display: flex; overflow-x: auto; gap: 5px; scroll-snap-type: x mandatory; }
  .step-tab.step-button { flex: 0 0 120px; scroll-snap-align: start; min-height: 48px; }
  .jb-spec-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .roof-layer, .jb-info-card, .step-tab.step-button, .jb-cta-btn { transition: none !important; animation: none !important; }
}