.grv-promo-backdrop {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: none;
  background: rgba(10, 14, 26, 0.72);
  backdrop-filter: blur(6px);
  animation: grv-promo-fade 0.2s ease-out;
}
.grv-promo-backdrop.is-open {
  display: flex;
  align-items: center;
  justify-content: center;
}
.grv-promo-modal {
  position: relative;
  width: min(420px, 92vw);
  background: #fff;
  border-radius: 20px;
  padding: 36px 32px 32px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.25);
  animation: grv-promo-pop 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}
.grv-promo-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border: none;
  background: rgba(0, 0, 0, 0.04);
  border-radius: 50%;
  font-size: 18px;
  color: #333;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
.grv-promo-close:hover {
  background: rgba(0, 0, 0, 0.1);
}
.grv-promo-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, #1bc88a, #3ad4a0);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
}
.grv-promo-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.8);
  animation: grv-promo-pulse 1.4s ease-in-out infinite;
}
.grv-promo-title {
  font-size: 22px;
  font-weight: 700;
  color: #0a0e1a;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.grv-promo-subtitle {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
  margin: 0 0 24px;
}
.grv-promo-qr-wrap {
  width: 240px;
  height: 240px;
  margin: 0 auto 18px;
  padding: 12px;
  background: #f8f9fb;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #eef0f4;
}
.grv-promo-qr {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.grv-promo-tip {
  text-align: center;
  font-size: 13px;
  color: #888;
  margin: 0 0 16px;
}
.grv-promo-perks {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  padding-top: 18px;
  border-top: 1px dashed #eef0f4;
}
.grv-promo-perk {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: rgba(27, 200, 138, 0.08);
  color: #1bc88a;
  font-size: 12px;
  border-radius: 999px;
  font-weight: 500;
}
.grv-promo-perk::before {
  content: '✓';
  font-weight: 700;
}
@keyframes grv-promo-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes grv-promo-pop {
  from { transform: scale(0.92) translateY(10px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}
@keyframes grv-promo-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.8); opacity: 0.5; }
}
@media (max-width: 480px) {
  .grv-promo-modal { padding: 28px 20px 24px; }
  .grv-promo-qr-wrap { width: 200px; height: 200px; }
}