/* Animated gradient background */
.promo-animated-bg {
  background: linear-gradient(90deg, #06b6d4, #3b82f6, #a855f7, #06b6d4);
  background-size: 300% 100%;
  animation: promoGradient 10s ease infinite;
}

@keyframes promoGradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Glow line */
.promo-glow {
  box-shadow:
    0 10px 40px rgba(6, 182, 212, 0.25),
    0 2px 0 rgba(6, 182, 212, 0.25) inset;
}

/* Small shimmer highlight */
.promo-shimmer {
  position: relative;
  overflow: hidden;
}

.promo-shimmer::before {
  content: "";
  position: absolute;
  top: 0;
  left: -40%;
  width: 40%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.22), transparent);
  transform: skewX(-18deg);
  animation: shimmer 3.5s ease-in-out infinite;
}

@keyframes shimmer {
  0% { left: -60%; }
  60% { left: 120%; }
  100% { left: 120%; }
}

/* Soft pulse for badge */
.promo-pulse {
  animation: promoPulse 1.8s ease-in-out infinite;
}

@keyframes promoPulse {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(-1px); opacity: 0.95; }
}

/* Fade/slide transitions controlled by JS */
#promo-bar {
  transition: transform 260ms ease, opacity 260ms ease;
}