* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}


.checkout-container {
  background: white;
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  max-width: 420px;
  width: 100%;
  overflow: hidden;
}

.checkout-container .checkout-header {
  background: linear-gradient(135deg, #ff2c55 0%, #e0264a 100%);
  color: white;
  padding: 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.checkout-header h1 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.checkout-header .amount {
  font-size: 32px;
  font-weight: 800;
}

.checkout-content {
  padding: 28px 24px;
}

.checkout-summary {
  background: #f8f9fa;
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 24px;
}

.checkout-summary .summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 15px;
}

.checkout-summary .summary-row.total {
  font-weight: 700;
  font-size: 18px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 2px solid #e0e0e0;
}

.payment-methods-info {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #e8f5e9;
  border: 1px solid #c8e6c9;
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 24px;
  font-size: 14px;
  color: #2e7d32;
}

.payment-methods-info .icon {
  font-size: 28px;
  flex-shrink: 0;
}

.checkout-payment-warning {
  background: #fff3cd;
  border: 1px solid #ffc107;
  color: #856404;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 24px;
  line-height: 1.4;
}

.checkout-btn {
  width: 100%;
  background: linear-gradient(135deg, #ff2c55 0%, #e0264a 100%);
  color: white;
  border: none;
  padding: 18px 24px;
  font-size: 18px;
  font-weight: 700;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.checkout-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 44, 85, 0.4);
}

.checkout-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.checkout-error {
  display: none;
  background: #ffebee;
  border: 1px solid #f44336;
  color: #c62828;
  padding: 12px 16px;
  border-radius: 8px;
  margin-top: 16px;
  font-size: 14px;
}

.checkout-footer {
  padding: 16px 24px;
  text-align: center;
  font-size: 13px;
  color: #666;
  border-top: 1px solid #eee;
}

.checkout-footer p {
  margin: 4px 0;
}