/* Upgrade prompt overlay — loaded globally so game pages can trigger the modal */

.upgrade-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.upgrade-modal {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  max-width: 440px;
  width: 100%;
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  text-align: center;
  animation: upgradeModalIn var(--transition-modal) forwards;
}

@keyframes upgradeModalIn {
  from { opacity: 0; transform: scale(0.93) translateY(8px); }
  to   { opacity: 1; transform: scale(1)    translateY(0);   }
}

.upgrade-modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-alpha);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.upgrade-modal-close:hover {
  color: var(--text-primary);
}

.upgrade-modal-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin: 0 auto var(--space-5);
  box-shadow: var(--shadow-glow);
}

.upgrade-modal-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 var(--space-3);
  letter-spacing: -0.02em;
}

.upgrade-modal-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0 0 var(--space-5);
}

.upgrade-modal-social {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: 0.85rem;
  color: var(--color-warning);
  margin-bottom: var(--space-5);
}

.upgrade-modal-plans {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.upgrade-plan-btn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-3);
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.upgrade-plan-btn:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-focus);
}

.upgrade-plan-btn--featured {
  border-color: var(--color-primary);
  background: var(--surface-primary);
}

.upgrade-plan-badge {
  position: absolute;
  top: -9px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--color-success);
  color: #fff;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.upgrade-plan-price {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.upgrade-plan-price span {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.upgrade-plan-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.upgrade-modal-link {
  font-size: 0.82rem;
  color: var(--color-primary-light);
  text-decoration: none;
}

.upgrade-modal-link:hover {
  text-decoration: underline;
}