/* ========== РЕФЕРАЛЫ ==========
   Оверлей/окно — тот же паттерн position:fixed + центрирование, что и у остальных
   фичевых оверлеев (см. friends_styles.css/reports_styles.css). Внутри переиспользуем
   .admin-header/.close-shop-btn/.admin-text-input/.item-btn (общие классы). */

#referralOverlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1200;
}

#referralWindow {
  background: white;
  width: 90%;
  max-width: 520px;
  max-height: 85vh;
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
}

#referralContent {
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.referral-code-box {
  background: #f7f8fc;
  border-radius: 10px;
  padding: 14px;
}

.referral-code-box label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: #666;
  margin-bottom: 4px;
}

.referral-code-row {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 10px;
}

.referral-code-row:last-child {
  margin-bottom: 0;
}

.referral-code-value {
  flex: 1;
  font-family: monospace;
  font-size: 14px;
  padding: 8px 10px;
  background: white;
  border: 1px solid #ddd;
  border-radius: 6px;
  overflow-x: auto;
  white-space: nowrap;
}

.referral-copy-btn {
  padding: 8px 12px;
  border: none;
  border-radius: 6px;
  background: #667eea;
  color: white;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  flex-shrink: 0;
}

.referral-copy-btn:hover {
  background: #5a6fd8;
}

.referral-stats {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: #444;
}

.referral-pending-rewards {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.referral-reward-card {
  background: #fff8e6;
  border: 1px solid #f0d896;
  border-radius: 10px;
  padding: 12px;
}

.referral-reward-card p {
  margin: 0 0 10px;
  font-size: 13px;
}

.referral-reward-choices {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.referral-reward-choices button {
  padding: 8px 12px;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  background: #667eea;
  color: white;
}

.referral-reward-choices button:disabled {
  background: #ccc;
  cursor: not-allowed;
}

.referral-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.referral-list-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #f7f8fc;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 13px;
}

.referral-list-empty {
  color: #888;
  font-size: 13px;
  text-align: center;
  padding: 10px;
}