/* Error Handling and Loading States CSS */

/* === ERROR OVERLAY === */

.error-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 1;
  visibility: visible;
  transition: all var(--duration-normal) var(--ease-in-out);
}

.error-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.error-modal {
  background: var(--theme-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--theme-shadow-heavy);
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow: hidden;
  transform: scale(1);
  transition: transform var(--duration-normal) var(--ease-out);
}

.error-overlay.hidden .error-modal {
  transform: scale(0.95);
}

.error-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--theme-border-primary);
  background: linear-gradient(135deg, 
    rgba(var(--color-error-rgb), 0.1) 0%, 
    rgba(var(--color-error-rgb), 0.05) 100%);
}

.error-title {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-error);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.error-title::before {
  content: '⚠️';
  font-size: var(--font-size-xl);
}

.error-close {
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--theme-text-secondary);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-base);
  transition: all var(--duration-fast) var(--ease-in-out);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.error-close:hover {
  background-color: var(--theme-bg-tertiary);
  color: var(--theme-text-primary);
}

.error-content {
  padding: var(--space-6);
  max-height: 300px;
  overflow-y: auto;
}

.error-message {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--theme-text-primary);
  margin-bottom: var(--space-4);
}

.error-details {
  background-color: var(--theme-bg-secondary);
  border: 1px solid var(--theme-border-primary);
  border-radius: var(--radius-base);
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--theme-text-secondary);
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 200px;
  overflow-y: auto;
}

.error-actions {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-6);
  border-top: 1px solid var(--theme-border-primary);
  background-color: var(--theme-bg-secondary);
  flex-wrap: wrap;
}

.error-retry-btn,
.error-details-btn,
.error-report-btn {
  @extend .btn-base;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: all var(--duration-normal) var(--ease-in-out);
}

.error-retry-btn {
  background-color: var(--color-western-purple);
  color: var(--color-white);
  border: 1px solid var(--color-western-purple);
}

.error-retry-btn:hover {
  background-color: #6b3c99;
  transform: translateY(-1px);
}

.error-details-btn {
  background-color: transparent;
  color: var(--theme-text-secondary);
  border: 1px solid var(--theme-border-primary);
}

.error-details-btn:hover {
  background-color: var(--theme-bg-tertiary);
  color: var(--theme-text-primary);
}

.error-report-btn {
  background-color: var(--color-turquoise);
  color: var(--color-white);
  border: 1px solid var(--color-turquoise);
}

.error-report-btn:hover {
  background-color: #007d85;
  transform: translateY(-1px);
}

/* === LOADING OVERLAY === */

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 1;
  visibility: visible;
  transition: all var(--duration-normal) var(--ease-in-out);
}

.loading-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-modal {
  background: var(--theme-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--theme-shadow-heavy);
  padding: var(--space-8);
  text-align: center;
  min-width: 200px;
  transform: scale(1);
  transition: transform var(--duration-normal) var(--ease-out);
}

.loading-overlay.hidden .loading-modal {
  transform: scale(0.95);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--theme-border-primary);
  border-top-color: var(--color-western-purple);
  border-radius: var(--radius-full);
  animation: loading-spin 1s linear infinite;
  margin: 0 auto var(--space-4);
}

@keyframes loading-spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-message {
  font-size: var(--font-size-base);
  color: var(--theme-text-primary);
  margin-bottom: var(--space-4);
  font-weight: var(--font-weight-medium);
}

.loading-cancel {
  @extend .btn-base;
  padding: var(--space-2) var(--space-4);
  background-color: transparent;
  color: var(--theme-text-secondary);
  border: 1px solid var(--theme-border-primary);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  transition: all var(--duration-normal) var(--ease-in-out);
}

.loading-cancel:hover {
  background-color: var(--theme-bg-tertiary);
  color: var(--theme-text-primary);
}

/* === INLINE LOADING STATES === */

.loading-button {
  position: relative;
  pointer-events: none;
}

.loading-button::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin-top: -8px;
  margin-left: -8px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: var(--radius-full);
  animation: loading-spin 1s linear infinite;
}

.loading-button .button-text {
  opacity: 0;
}

/* === SKELETON LOADERS === */

.skeleton {
  background: linear-gradient(90deg, 
    var(--theme-bg-secondary) 25%, 
    var(--theme-bg-tertiary) 50%, 
    var(--theme-bg-secondary) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: var(--radius-base);
}

@keyframes skeleton-shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.skeleton-text {
  height: 1em;
  margin-bottom: var(--space-2);
  border-radius: var(--radius-sm);
}

.skeleton-text.short {
  width: 60%;
}

.skeleton-text.medium {
  width: 80%;
}

.skeleton-text.long {
  width: 100%;
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
}

.skeleton-button {
  height: 40px;
  width: 120px;
  border-radius: var(--radius-base);
}

.skeleton-card {
  height: 200px;
  border-radius: var(--radius-md);
}

/* === PROGRESS INDICATORS === */

.progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--theme-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, 
    var(--color-western-purple) 0%, 
    var(--color-turquoise) 100%);
  border-radius: var(--radius-full);
  transition: width var(--duration-slow) var(--ease-out);
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.3) 50%, 
    transparent 100%);
  animation: progress-shine 2s infinite;
}

@keyframes progress-shine {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.progress-indeterminate {
  position: relative;
  overflow: hidden;
}

.progress-indeterminate::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    var(--color-western-purple) 0%, 
    var(--color-turquoise) 100%);
  animation: progress-indeterminate 2s infinite;
}

@keyframes progress-indeterminate {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/* === TOAST ANIMATIONS === */

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

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

/* === FORM VALIDATION STATES === */

.form-field.loading .form-input {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3e%3cpath fill='%236b7280' d='M12,4a8,8,0,0,1,7.89,6.7A1.53,1.53,0,0,0,21.38,12h0a1.5,1.5,0,0,0,1.48-1.75,11,11,0,0,0-21.72,0A1.5,1.5,0,0,0,2.62,12h0a1.53,1.53,0,0,0,1.49-1.3A8,8,0,0,1,12,4Z'%3e%3canimateTransform attributeName='transform' dur='0.75s' repeatCount='indefinite' type='rotate' values='0 12 12;360 12 12'/%3e%3c/path%3e%3c/svg%3e");
  background-position: right var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 16px 16px;
  padding-right: var(--space-10);
}

.form-field.success .form-input {
  border-color: var(--color-success);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23A6BB48'%3e%3cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3e%3c/svg%3e");
  background-position: right var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 16px 16px;
  padding-right: var(--space-10);
}

.form-field.error .form-input {
  border-color: var(--color-error);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23DC3545'%3e%3cpath fill-rule='evenodd' d='M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7 4a1 1 0 11-2 0 1 1 0 012 0zm-1-9a1 1 0 00-1 1v4a1 1 0 102 0V6a1 1 0 00-1-1z' clip-rule='evenodd'/%3e%3c/svg%3e");
  background-position: right var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 16px 16px;
  padding-right: var(--space-10);
}

/* === RESPONSIVE DESIGN === */

@media (max-width: 768px) {
  .error-modal {
    width: 95%;
    max-height: 90vh;
  }
  
  .error-header {
    padding: var(--space-4);
  }
  
  .error-content {
    padding: var(--space-4);
  }
  
  .error-actions {
    padding: var(--space-4);
    flex-direction: column;
  }
  
  .error-retry-btn,
  .error-details-btn,
  .error-report-btn {
    width: 100%;
    justify-content: center;
  }
  
  .loading-modal {
    padding: var(--space-6);
    width: 90%;
  }
}

@media (max-width: 480px) {
  .error-title {
    font-size: var(--font-size-base);
  }
  
  .error-details {
    font-size: var(--font-size-xs);
  }
  
  .loading-spinner {
    width: 32px;
    height: 32px;
    border-width: 3px;
  }
}

/* === ACCESSIBILITY === */

@media (prefers-reduced-motion: reduce) {
  .loading-spinner,
  .skeleton,
  .progress-fill::after,
  .progress-indeterminate::before {
    animation: none;
  }
  
  .error-modal,
  .loading-modal {
    transition: none;
  }
}

/* === HIGH CONTRAST === */

@media (prefers-contrast: high) {
  .error-modal,
  .loading-modal {
    border: 2px solid var(--theme-text-primary);
  }
  
  .loading-spinner {
    border-width: 3px;
  }
  
  .progress-bar {
    border: 1px solid var(--theme-text-primary);
  }
}