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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  background: white;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  padding: 40px;
}

h1 {
  color: #333;
  margin-bottom: 10px;
  font-size: 28px;
}

.subtitle {
  color: #666;
  margin-bottom: 30px;
  font-size: 14px;
}

.form-section {
  margin-bottom: 30px;
  padding: 20px;
  background: #f9f9f9;
  border-radius: 8px;
}

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  color: #333;
  font-weight: 500;
  font-size: 14px;
}

input, select {
  width: 100%;
  padding: 12px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 14px;
  transition: border-color 0.3s;
}

input:focus, select:focus {
  outline: none;
  border-color: #667eea;
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

button {
  padding: 14px 28px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Popup Modal Styles */
.popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  animation: fadeIn 0.3s ease;
}

.popup-overlay.show {
  display: flex;
}

.popup-modal {
  background: white;
  border-radius: 12px;
  padding: 30px;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: slideUp 0.3s ease;
  position: relative;
}

.popup-modal.success {
  border-top: 4px solid #4caf50;
}

.popup-modal.error {
  border-top: 4px solid #f44336;
}

.popup-icon {
  font-size: 48px;
  text-align: center;
  margin-bottom: 15px;
}

.popup-modal.success .popup-icon {
  color: #4caf50;
}

.popup-modal.error .popup-icon {
  color: #f44336;
}

.popup-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
  text-align: center;
  color: #333;
}

.popup-message {
  font-size: 14px;
  color: #666;
  text-align: center;
  line-height: 1.6;
  margin-bottom: 20px;
}

.popup-close {
  position: absolute;
  top: 15px;
  right: 15px;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: #999;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background 0.2s;
}

.popup-close:hover {
  background: #f5f5f5;
  color: #333;
}

.popup-button {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.popup-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    transform: translateY(30px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.loading {
  text-align: center;
  color: #666;
  margin: 20px 0;
  display: none;
}

.loading.show {
  display: block;
}

.payment-container {
  margin-top: 30px;
  padding: 20px;
  border: 2px dashed #e0e0e0;
  border-radius: 8px;
  min-height: 400px;
  display: none;
}

.payment-container.show {
  display: block;
}

.payment-container h3 {
  margin-bottom: 20px;
  color: #333;
}

#checkout-container, #adyen-container, #qicard-container {
  min-height: 300px;
}

.info-box {
  background: #e3f2fd;
  border-left: 4px solid #2196f3;
  padding: 15px;
  margin-bottom: 20px;
  border-radius: 4px;
}

.info-box h4 {
  color: #1976d2;
  margin-bottom: 8px;
}

.info-box p {
  color: #555;
  font-size: 14px;
  line-height: 1.6;
}