.app-header {
  position: absolute; top: 0; left: 0; right: 0;
  padding: 1.5rem 1.5rem 1rem;
  display: flex; justify-content: space-between; align-items: center;
  z-index: 100;
  text-shadow: 0 2px 10px rgba(0,0,0,0.6);
  opacity: 1;
  transition: opacity 0.9s var(--ease-soft), transform 0.9s var(--ease-soft);
}
.app-root.pre-opening .app-header,
.app-root.pre-opening .app-footer { opacity: 0; transform: translateY(-10px); pointer-events: none; }

.header-title {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.04em;
  font-size: 1.15rem;
  min-width: 0;
  flex: 1 1 auto;
  padding-right: 0.75rem;
  line-height: 1.35;
}
.header-emoji-trigger {
  font-size: 0.85rem;
  line-height: 1;
  margin-top: 4px;
  opacity: 0.55;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.header-controls { flex: 0 0 auto; }
.icon-btn { background: none; border: none; color: var(--text-color); cursor: pointer; padding: 0.5rem; z-index: 101; opacity: 0.85; transition: opacity 0.3s, transform 0.3s; }
.icon-btn:hover { opacity: 1; transform: scale(1.08); }

.main-container { flex: 1; position: relative; overflow: hidden; z-index: 1; }
.scene-stage { width: 100%; height: 100%; position: relative; }

.scene-container {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  opacity: 0;
  transform: scale(1.035) translateY(14px);
  filter: blur(6px);
  transition:
    opacity var(--duration-scene) var(--ease-silk),
    transform var(--duration-scene) var(--ease-silk),
    filter var(--duration-scene) var(--ease-silk);
  pointer-events: none;
  padding: 2rem;
}
.scene-container.active {
  opacity: 1;
  transform: scale(1) translateY(0);
  filter: blur(0);
  pointer-events: auto;
}

.app-footer {
  position: absolute; bottom: 26px; left: 0; right: 0;
  display: flex; justify-content: center; z-index: 100;
  transition: opacity 0.6s var(--ease-soft), transform 0.6s var(--ease-soft);
}
.progress-dots-container { display: flex; gap: 10px; padding: 8px 14px; }
.dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: rgba(255,255,255,0.28);
  box-shadow: 0 0 0 rgba(232,194,122,0);
  transition: all 0.45s var(--ease-soft);
}
.dot.active {
  background: var(--accent-gold);
  transform: scale(1.6);
  box-shadow: 0 0 10px rgba(232,194,122,0.65);
}

.nav-arrow-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 46px; height: 46px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(20, 8, 14, 0.35);
  border: 1px solid rgba(255,255,255,0.22);
  color: var(--text-color);
  backdrop-filter: blur(6px);
  cursor: pointer;
  z-index: 90;
  opacity: 0.85;
  transition: opacity 0.4s var(--ease-soft), transform 0.3s var(--ease-soft), background 0.3s ease;
}
.nav-arrow-btn:hover { opacity: 1; background: rgba(201,67,90,0.35); transform: translateY(-50%) scale(1.06); }
.nav-arrow-btn:active { transform: translateY(-50%) scale(0.94); }
.nav-prev { left: 14px; }
.nav-next { right: 14px; }
.nav-arrow-btn.nav-disabled { opacity: 0.18; pointer-events: none; }
.app-root.pre-opening .nav-arrow-btn { opacity: 0; pointer-events: none; }