/**
 * Checkout Loading States
 * Styles for Stripe Checkout Sessions loading and error states
 */

/* Import base design system */
@import url("/css/base.css");
@import url("/css/typography.css");

/* ============================================
   Checkout Loading States
   ============================================ */

/* Loading overlay for checkout process */
.checkout-loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 10000;
  opacity: 0;
  animation: fadeIn 0.3s ease forwards;
}

.checkout-loading-content {
  text-align: center;
  max-width: 400px;
  padding: 2rem;
}

/* Spinner for checkout loading */
.checkout-spinner {
  width: 60px;
  height: 60px;
  border: 4px solid #f3f3f3;
  border-top: 4px solid var(--color-blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 2rem;
}

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

/* Loading text */
.checkout-loading-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-black);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.checkout-loading-subtext {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================
   Checkout Error States
   ============================================ */

.checkout-error {
  background: #fef2f2;
  border: 2px solid #cc2936;
  border-radius: 0;
  padding: 1.5rem;
  margin: 1rem 0;
  animation: slideDown 0.3s ease forwards;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.checkout-error-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: #cc2936;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.checkout-error-message {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: #991b1b;
  line-height: 1.5;
}

.checkout-error-actions {
  margin-top: 1rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.checkout-error-btn {
  padding: 0.75rem 1.5rem;
  border: 2px solid #cc2936;
  background: transparent;
  color: #cc2936;
  font-family: var(--font-display);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all 0.2s ease;
}

.checkout-error-btn:hover {
  background: #cc2936;
  color: white;
}

/* ============================================
   Inline Loading States
   ============================================ */

/* Button loading state */
.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn-loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid #ffffff;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 0.8s linear infinite;
}

/* Dark button variant */
.btn-loading.btn-dark::after {
  border-color: #000000;
  border-top-color: transparent;
}

/* ============================================
   Toast Notifications
   ============================================ */

.checkout-toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  max-width: 400px;
  background: white;
  border: 2px solid var(--color-black);
  padding: 1rem 1.5rem;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.1);
  animation: slideInRight 0.3s ease forwards;
  z-index: 9999;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.checkout-toast.error {
  border-color: #cc2936;
  background: #fef2f2;
}

.checkout-toast.success {
  border-color: #4caf50;
  background: #f0fdf4;
}

.checkout-toast-message {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
}

.checkout-toast-close {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.checkout-toast-close:hover {
  opacity: 1;
}

/* ============================================
   Progress Indicator
   ============================================ */

.checkout-progress {
  width: 100%;
  max-width: 300px;
  margin: 1rem auto;
}

.checkout-progress-bar {
  height: 4px;
  background: #e5e5e5;
  border-radius: 2px;
  overflow: hidden;
}

.checkout-progress-fill {
  height: 100%;
  background: var(--color-blue);
  width: 0;
  animation: progressFill 2s ease-out forwards;
}

@keyframes progressFill {
  to {
    width: 90%;
  }
}

/* ============================================
   Mobile Optimizations
   ============================================ */

@media (max-width: 640px) {
  .checkout-loading-content {
    padding: 1.5rem;
  }

  .checkout-spinner {
    width: 40px;
    height: 40px;
    margin-bottom: 1.5rem;
  }

  .checkout-loading-text {
    font-size: 1.25rem;
  }

  .checkout-toast {
    bottom: 1rem;
    right: 1rem;
    left: 1rem;
    max-width: none;
  }

  .checkout-error-actions {
    flex-direction: column;
  }

  .checkout-error-btn {
    width: 100%;
    text-align: center;
  }
}

/* ============================================
   Accessibility
   ============================================ */

/* Screen reader only text */
.checkout-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus styles */
.checkout-error-btn:focus,
.checkout-toast-close:focus {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .checkout-loading,
  .checkout-error,
  .checkout-toast {
    animation: none;
  }

  .checkout-spinner {
    animation: none;
    border-top-color: var(--color-blue);
  }

  .checkout-progress-fill {
    animation: none;
    width: 90%;
  }
}

/* ==========================================================================
   DARK MODE ENHANCEMENTS
   ========================================================================== */

/* Checkout loading overlay dark mode */
[data-theme="dark"] .checkout-loading {
  background-color: var(--color-surface-overlay);
}

[data-theme="dark"] .checkout-spinner {
  border-color: var(--color-border-medium);
  border-top-color: var(--color-blue);
}

[data-theme="dark"] .checkout-loading-text {
  color: var(--color-text-primary);
}

[data-theme="dark"] .checkout-loading-subtext {
  color: var(--color-text-secondary);
}

/* Error states dark mode */
[data-theme="dark"] .checkout-error {
  background: var(--color-error-light);
  border-color: var(--color-error);
}

[data-theme="dark"] .checkout-error-title {
  color: var(--color-error);
}

[data-theme="dark"] .checkout-error-message {
  color: var(--color-text-primary);
}

[data-theme="dark"] .checkout-error-btn {
  border-color: var(--color-error);
  background: transparent;
  color: var(--color-error);
}

[data-theme="dark"] .checkout-error-btn:hover {
  background: var(--color-error);
  color: var(--color-white);
}

/* Button loading states dark mode */
[data-theme="dark"] .btn-loading::after {
  border-color: var(--color-text-inverse);
  border-top-color: transparent;
}

[data-theme="dark"] .btn-loading.btn-dark::after {
  border-color: var(--color-text-primary);
  border-top-color: transparent;
}

/* Toast notifications dark mode */
[data-theme="dark"] .checkout-toast {
  background: var(--color-surface);
  border-color: var(--color-border-medium);
  box-shadow: 0 4px 16px var(--shadow-color-strong);
}

[data-theme="dark"] .checkout-toast.error {
  border-color: var(--color-error);
  background: var(--color-error-light);
}

[data-theme="dark"] .checkout-toast.success {
  border-color: var(--color-success);
  background: var(--color-success-light);
}

[data-theme="dark"] .checkout-toast-message {
  color: var(--color-text-primary);
}

[data-theme="dark"] .checkout-toast-close {
  color: var(--color-text-secondary);
}

[data-theme="dark"] .checkout-toast-close:hover {
  color: var(--color-text-primary);
}

/* Progress indicator dark mode */
[data-theme="dark"] .checkout-progress-bar {
  background: var(--color-background-tertiary);
}

[data-theme="dark"] .checkout-progress-fill {
  background: var(--color-blue);
}

/* Enhanced visibility for loading states */
[data-theme="dark"] .checkout-loading-content {
  background: var(--color-surface);
  border-radius: 12px;
  padding: var(--space-3xl);
  box-shadow: 0 8px 32px var(--shadow-color-strong);
}

/* Focus styles for dark mode */
[data-theme="dark"] .checkout-error-btn:focus,
[data-theme="dark"] .checkout-toast-close:focus {
  outline-color: var(--color-blue);
}