/* ==== Album Navigation Arrows ==== */
.album-viewer .nav-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 48px;
  color: rgba(255, 255, 255, 0.85);
  text-shadow: 0 0 8px rgba(0,0,0,0.6);
  cursor: pointer;
  user-select: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 20;
}

.album-viewer .nav-arrow:hover {
  opacity: 0.9;
  transform: translateY(-50%) scale(1.15);
}

.album-viewer .nav-left { left: 20px; }
.album-viewer .nav-right { right: 20px; }

.phase-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  font-size: 48px;
  color: rgba(255,255,255,0.9);
  cursor: pointer;
  user-select: none;
  z-index: 50;
  transition: color 0.3s ease, transform 0.2s ease;
}
.phase-nav.left { left: 28px; }
.phase-nav.right { right: 28px; }

.phase-nav:hover {
  color: #fff;
  transform: translateY(-50%) scale(1.1);
}