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

body {
  font-family: 'Arial', sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: black;
}

/* Header */
.header {
  background-color: #007bff;
  color: #ffffff;
  padding: 1rem;
}

/* Hero */
.hero {
  background-image: url('hero-bg.jpg');
  background-size: cover;
  height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #ffffff;
}

/* Sections */
.section {
  padding: 2rem;
}

/* Footer */
.footer {
  background-color: #f8f9fa;
  padding: 1rem;
}

.footer__text {
  color: #343a40;
  background-color: transparent;
  justify-content: flex-start;
}

.footer__link {
  color: #FFD700;
}

.footer__link:hover {
  color: #FFC700;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1000;
}

.modal__content {
  background-color: white;
  margin: 15% auto;
  padding: 20px;
  border: 1px solid #888;
  width: 80%;
  max-width: 500px;
}

/* Payment Containers */
#paymentOptionsContainer {
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(20px);
}

#paymentOptionsContainer.show {
  opacity: 1;
  transform: translateY(0);
}

#cardFieldsContainer {
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(20px);
}

#cardFieldsContainer.show {
  opacity: 1;
  transform: translateY(0);
}

#feedbackContainer {
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(20px);
}

#feedbackContainer.show {
  opacity: 1;
  transform: translateY(0);
}

#loaderContainer {
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(20px);
}

#loaderContainer.show {
  opacity: 1;
  transform: translateY(0);
}

/* Form Elements */
input.error {
  border-color: #dc3545;
  background-color: #f8d7da;
}

input.success {
  border-color: #28a745;
  background-color: #d4edda;
}

.error-message {
  color: #dc3545;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.success-message {
  color: #28a745;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

/* Feedback */
.feedback-success {
  background-color: #d4edda;
  color: #155724;
  padding: 0.75rem;
  border: 1px solid #c3e6cb;
  border-radius: 0.25rem;
  margin-bottom: 1rem;
}

.feedback-error {
  background-color: #f8d7da;
  color: #721c24;
  padding: 0.75rem;
  border: 1px solid #f5c6cb;
  border-radius: 0.25rem;
  margin-bottom: 1rem;
}

/* Loader */
.loader-spinner {
  border: 4px solid #f3f3f3;
  border-top: 4px solid #3498db;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

/* Animations */
@keyframes slideUp {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

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

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    height: 40vh;
  }
  .section {
    padding: 1rem;
  }
  .modal__content {
    width: 90%;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 0.5rem;
  }
  .footer {
    padding: 0.5rem;
  }
  .hero {
    height: 30vh;
  }
  .section {
    padding: 0.5rem;
  }
  .modal__content {
    width: 95%;
    margin: 20% auto;
  }
}