/* ─── Tour Mode (Mobile 3D) ─────────────────────────────────────── */

/* Full-screen fade overlay for transitions */
#tour-fade {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: #0c0a08;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease-in-out;
}
#tour-fade.active {
  opacity: 1;
}

/* Bottom HUD bar — location name + hint */
#tour-hud {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 22;
  display: none;
  padding: 0.8rem 1rem;
  background: linear-gradient(transparent, rgba(12, 10, 8, 0.85));
  font-family: 'Press Start 2P', 'Courier New', monospace;
  text-align: center;
  pointer-events: none;
}

#tour-location {
  font-size: clamp(9px, 1.6vw, 12px);
  color: #00ff41;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-shadow: 0 0 8px rgba(0, 255, 65, 0.4);
  margin-bottom: 0.3rem;
}

#tour-hint {
  font-size: clamp(7px, 1.2vw, 9px);
  color: rgba(255, 255, 255, 0.45);
  font-family: 'Courier New', monospace;
}

/* Exhibit interact button — shown at alcove stops */
#tour-exhibit-btn {
  position: fixed;
  bottom: 4.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 22;
  display: none;
  background: rgba(12, 10, 8, 0.9);
  border: 1px solid rgba(0, 255, 65, 0.5);
  color: #00ff41;
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: clamp(8px, 1.4vw, 11px);
  padding: 0.7rem 1.2rem;
  cursor: pointer;
  pointer-events: auto;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: border-color 0.2s, background 0.2s;
}

#tour-exhibit-btn:active {
  background: rgba(0, 255, 65, 0.15);
  border-color: #00ff41;
}

/* Back button — shown at alcove stops */
#tour-back-btn {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 22;
  display: none;
  background: rgba(12, 10, 8, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: rgba(255, 255, 255, 0.7);
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: clamp(8px, 1.2vw, 10px);
  padding: 0.5rem 0.8rem;
  cursor: pointer;
  pointer-events: auto;
  transition: border-color 0.2s;
}

#tour-back-btn:active {
  border-color: #00ff41;
  color: #00ff41;
}

/* Curator (PROXYCHAT) button — always visible in tour mode */
#tour-curator-btn {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 22;
  display: none;
  background: rgba(12, 10, 8, 0.8);
  border: 1px solid rgba(0, 255, 65, 0.4);
  color: #00ff41;
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: clamp(7px, 1.2vw, 9px);
  padding: 0.5rem 0.7rem;
  cursor: pointer;
  pointer-events: auto;
  text-shadow: 0 0 6px rgba(0, 255, 65, 0.3);
  transition: border-color 0.2s, background 0.2s;
}

#tour-curator-btn:active {
  background: rgba(0, 255, 65, 0.15);
  border-color: #00ff41;
}

#tour-exhibit-btn:focus-visible,
#tour-back-btn:focus-visible,
#tour-curator-btn:focus-visible {
  outline: 2px solid #00ff41;
  outline-offset: 2px;
}