/* Ad Background Overlay */
#promo-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 999999;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
  box-sizing: border-box;
}

/* Ad Box */
#promo-box {
  position: relative;
  background: #ffffff;
  width: 100%;
  max-width: 440px;
  border-radius: 12px;
  padding: 32px 24px 24px 24px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #333333;
  text-align: center;
  box-sizing: border-box;
  animation: promoFadeIn 0.25s ease-out;
}

/* Dismiss 'X' Button */
#promo-close-btn {
  position: absolute;
  top: 10px;
  right: 12px;
  background: none;
  border: none;
  font-size: 24px;
  line-height: 1;
  color: #888;
  cursor: pointer;
  padding: 6px;
  transition: color 0.2s;
}

#promo-close-btn:hover {
  color: #111;
}

/* Content Elements */
.promo-title {
  margin: 0 0 10px 0;
  font-size: 1.25rem;
  font-weight: 700;
}

.promo-text {
  margin: 0 0 20px 0;
  font-size: 0.95rem;
  line-height: 1.5;
  color: #555;
}

.promo-btn {
  display: inline-block;
  background-color: #0070f3;
  color: #ffffff;
  text-decoration: none;
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
}

@keyframes promoFadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}