#promotion-popup {
  max-width: 600px;
  margin: 0 auto;
  background: radial-gradient(circle at 25% 20%, rgba(255, 255, 255, 0.15), transparent 45%),
    radial-gradient(circle at 80% 75%, rgba(255, 255, 255, 0.1), transparent 45%),
    linear-gradient(180deg, #7a0000, #c40000, #7a0000);
  border: 2px solid #ffffff;
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  font-family: 'Segoe UI', Arial, sans-serif;
  color: #fff5f5;
  padding: 0;
}

#promotion-popup .title {
  background: linear-gradient(145deg, #ff1a1a, #b30000);
  padding: 12px 0;
  text-align: center;
  position: relative;
  border-bottom: 2px solid #ffffff;
  font-size: 18px;
  color: #fff;
  margin: 0;
  font-weight: 900;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  text-shadow: 0 0 6px rgba(255, 255, 255, 0.9),
    0 0 14px rgba(255, 0, 0, 0.6);
}