/**
 * Error States & Offline Handling
 *
 * Visual feedback for error conditions, offline states, and failed operations.
 * Provides consistent error UI across the entire application.
 * Dark theme compatible, uses CSS variables throughout.
 */

/* Error state container */
.error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 2rem;
  text-align: center;
  background: var(--bg-card, #151520);
  border: 2px dashed rgba(220, 38, 38, 0.4);
  border-radius: 8px;
  margin: 2rem 0;
}

.error-state__icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.7;
}

.error-state__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fca5a5;
  margin-bottom: 0.5rem;
}

.error-state__message {
  font-size: 1rem;
  color: var(--text-secondary, #a1a1aa);
  margin-bottom: 1.5rem;
  max-width: 500px;
}

.error-state__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.error-state__button {
  padding: 0.75rem 1.5rem;
  background: #dc2626;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.error-state__button:hover {
  background: #b91c1c;
}

.error-state__button--secondary {
  background: var(--bg-tertiary, #1a1a24);
  color: #fca5a5;
  border: 1px solid rgba(220, 38, 38, 0.4);
}

.error-state__button--secondary:hover {
  background: var(--bg-secondary, #12121a);
}

/* Offline state */
.offline-state {
  background: var(--bg-card, #151520);
  border-color: rgba(245, 158, 11, 0.4);
}

.offline-state .error-state__title {
  color: #fcd34d;
}

.offline-state .error-state__message {
  color: var(--text-secondary, #a1a1aa);
}

.offline-state .error-state__button {
  background: #f59e0b;
  color: #000;
}

.offline-state .error-state__button:hover {
  background: #d97706;
}

.offline-state .error-state__button--secondary {
  color: #fcd34d;
  border-color: rgba(245, 158, 11, 0.4);
  background: var(--bg-tertiary, #1a1a24);
}

.offline-state .error-state__button--secondary:hover {
  background: var(--bg-secondary, #12121a);
}

/* Empty state (no data) */
.empty-state {
  background: var(--bg-card, #151520);
  border-color: var(--border-medium, rgba(255, 255, 255, 0.15));
  border-style: solid;
}

.empty-state .error-state__title {
  color: var(--text-primary, #e5e5e7);
}

.empty-state .error-state__message {
  color: var(--text-secondary, #a1a1aa);
}

.empty-state .error-state__button {
  background: var(--accent-primary, #0ea5e9);
}

.empty-state .error-state__button:hover {
  background: var(--accent-hover, #00b8e0);
}

/* Inline error messages */
.inline-error {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: rgba(220, 38, 38, 0.1);
  border-left: 4px solid #dc2626;
  border-radius: 4px;
  margin: 1rem 0;
}

.inline-error__icon {
  font-size: 1.5rem;
  color: #fca5a5;
  flex-shrink: 0;
}

.inline-error__content {
  flex: 1;
}

.inline-error__title {
  font-weight: 600;
  color: #fca5a5;
  margin-bottom: 0.25rem;
}

.inline-error__message {
  font-size: var(--text-sm);
  color: var(--text-secondary, #a1a1aa);
  line-height: 1.5;
}

.inline-error__close {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: #fca5a5;
  cursor: pointer;
  padding: 0.25rem;
  line-height: 1;
  flex-shrink: 0;
}

.inline-error__close:hover {
  color: #dc2626;
}

/* Warning variant */
.inline-error--warning {
  background: rgba(245, 158, 11, 0.1);
  border-left-color: #f59e0b;
}

.inline-error--warning .inline-error__icon {
  color: #fcd34d;
}

.inline-error--warning .inline-error__title {
  color: #fcd34d;
}

.inline-error--warning .inline-error__message {
  color: var(--text-secondary, #a1a1aa);
}

.inline-error--warning .inline-error__close {
  color: #fcd34d;
}

.inline-error--warning .inline-error__close:hover {
  color: #f59e0b;
}

/* Info variant */
.inline-error--info {
  background: rgba(14, 165, 233, 0.1);
  border-left-color: var(--accent-primary, #0ea5e9);
}

.inline-error--info .inline-error__icon {
  color: #93c5fd;
}

.inline-error--info .inline-error__title {
  color: #93c5fd;
}

.inline-error--info .inline-error__message {
  color: var(--text-secondary, #a1a1aa);
}

.inline-error--info .inline-error__close {
  color: #93c5fd;
}

.inline-error--info .inline-error__close:hover {
  color: var(--accent-primary, #0ea5e9);
}

/* Form field errors */
.field-error {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.25rem;
  font-size: var(--text-sm);
  color: #fca5a5;
}

.field-error__icon {
  font-size: 1rem;
}

.input-error {
  border-color: #dc2626 !important;
  background: rgba(220, 38, 38, 0.1) !important;
}

.input-error:focus {
  outline: 2px solid #dc2626;
  outline-offset: 2px;
}

/* Toast notifications for errors */
.error-toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  min-width: 300px;
  max-width: 500px;
  background: var(--bg-card, #151520);
  border: 1px solid var(--border-medium, rgba(255, 255, 255, 0.15));
  border-left: 4px solid #dc2626;
  border-radius: 8px;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  padding: 1rem;
  z-index: 9999;
  animation: toast-slide-in 0.3s ease-out;
}

@keyframes toast-slide-in {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.error-toast--success {
  border-left-color: #10b981;
}

.error-toast--warning {
  border-left-color: #f59e0b;
}

.error-toast--info {
  border-left-color: var(--accent-primary, #0ea5e9);
}

.error-toast__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.error-toast__title {
  font-weight: 600;
  color: var(--text-primary, #e5e5e7);
  font-size: var(--text-base);
}

.error-toast__close {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--text-secondary, #a1a1aa);
  cursor: pointer;
  padding: 0;
  line-height: 1;
}

.error-toast__close:hover {
  color: var(--text-primary, #e5e5e7);
}

.error-toast__message {
  font-size: var(--text-sm);
  color: var(--text-secondary, #a1a1aa);
  line-height: 1.5;
}

/* Loading failed state */
.load-failed {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem;
  text-align: center;
}

.load-failed__icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.load-failed__text {
  color: var(--text-secondary, #a1a1aa);
  margin-bottom: 1rem;
}

.load-failed__retry {
  padding: 0.5rem 1rem;
  background: var(--accent-primary, #0ea5e9);
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: var(--text-sm);
}

.load-failed__retry:hover {
  background: var(--accent-hover, #00b8e0);
}

/* Network status indicator */
.network-status {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 0.75rem 1rem;
  background: rgba(220, 38, 38, 0.15);
  border-bottom: 2px solid #dc2626;
  text-align: center;
  font-size: var(--text-sm);
  color: #fca5a5;
  font-weight: 600;
  z-index: 10000;
  transform: translateY(-100%);
  transition: transform 0.3s ease-out;
}

.network-status--visible {
  transform: translateY(0);
}

.network-status--online {
  background: rgba(16, 185, 129, 0.15);
  border-bottom-color: #10b981;
  color: #6ee7b7;
}

/* Retry counter */
.retry-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
  font-size: var(--text-sm);
  color: var(--text-secondary, #a1a1aa);
}

.retry-info__spinner {
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--border-medium, rgba(255, 255, 255, 0.15));
  border-top-color: var(--accent-primary, #0ea5e9);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* spin keyframes defined in transitions.css (canonical location) */

/* Mobile adjustments */
@media (max-width: 640px) {
  .error-toast {
    bottom: 1rem;
    right: 1rem;
    left: 1rem;
    min-width: auto;
  }

  .error-state {
    padding: 2rem 1rem;
  }

  .error-state__icon {
    font-size: 3rem;
  }

  .error-state__title {
    font-size: 1.25rem;
  }

  .error-state__actions {
    flex-direction: column;
    width: 100%;
  }

  .error-state__button {
    width: 100%;
  }
}

/* ================================================================
   ALERT BANNERS (Semantic Variants)
   Backported from Master Template
   ================================================================ */

.alert {
  padding: 1rem 1.25rem;
  border-radius: 8px;
  border-left: 4px solid var(--border-medium, rgba(255, 255, 255, 0.15));
  background: var(--bg-card, #151520);
  color: var(--text-primary, #e5e5e7);
  font-size: var(--text-base);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.alert a {
  color: inherit;
  font-weight: 600;
  text-decoration: underline;
}

.alert--success {
  background: rgba(16, 185, 129, 0.1);
  border-left-color: #10b981;
  color: #6ee7b7;
}

.alert--warning {
  background: rgba(245, 158, 11, 0.1);
  border-left-color: #f59e0b;
  color: #fcd34d;
}

.alert--error {
  background: rgba(220, 38, 38, 0.1);
  border-left-color: #dc2626;
  color: #fca5a5;
}

.alert--info {
  background: rgba(59, 130, 246, 0.1);
  border-left-color: var(--accent-primary, #0ea5e9);
  color: #93c5fd;
}

/* ================================================================
   CALLOUT / INFO BOXES
   Backported from Master Template
   ================================================================ */

.callout {
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 8px;
  border: 1px solid var(--border-medium, rgba(255, 255, 255, 0.15));
  background: var(--bg-card, #151520);
}

.callout__title {
  font-weight: 700;
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout--warning {
  border-color: rgba(245, 158, 11, 0.4);
  background: rgba(245, 158, 11, 0.08);
}

.callout--warning .callout__title {
  color: #fcd34d;
}

.callout--info {
  border-color: rgba(59, 130, 246, 0.4);
  background: rgba(59, 130, 246, 0.08);
}

.callout--info .callout__title {
  color: #93c5fd;
}

.callout--tip {
  border-color: rgba(16, 185, 129, 0.4);
  background: rgba(16, 185, 129, 0.08);
}

.callout--tip .callout__title {
  color: #6ee7b7;
}

.callout--danger {
  border-color: rgba(220, 38, 38, 0.4);
  background: rgba(220, 38, 38, 0.08);
}

.callout--danger .callout__title {
  color: #fca5a5;
}

/* ================================================================
   INLINE CONTENT BOXES (compact border-left style)
   Backported from Master Template
   ================================================================ */

.disclaimer-box {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  background: rgba(59, 130, 246, 0.08);
  border-left: 4px solid var(--accent-primary, #0ea5e9);
  border-radius: 4px;
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary, #e5e5e7);
}

.tip-box {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  background: rgba(16, 185, 129, 0.08);
  border-left: 4px solid #10b981;
  border-radius: 4px;
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary, #e5e5e7);
}

.background-reading {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  background: var(--bg-tertiary, #1a1a24);
  border-left: 4px solid var(--border-medium, rgba(255, 255, 255, 0.15));
  border-radius: 4px;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--text-secondary, #a1a1aa);
}

.background-reading a {
  color: var(--accent-primary, #0ea5e9);
  font-weight: 600;
}

.disclaimer-box p:last-child,
.tip-box p:last-child,
.background-reading p:last-child {
  margin-bottom: 0;
}

/* ================================================================
   PAGINATION
   Backported from Master Template
   ================================================================ */

.pagination {
  display: flex;
  gap: 0.25rem;
  justify-content: center;
  align-items: center;
  margin: 2rem 0;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
}

.pagination a,
.pagination button,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--border-medium, rgba(255, 255, 255, 0.15));
  border-radius: 4px;
  background: var(--bg-card, #151520);
  color: var(--text-primary, #e5e5e7);
  text-decoration: none;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.pagination a:hover,
.pagination button:hover {
  background: var(--bg-tertiary, #1a1a24);
  border-color: var(--accent-primary, #0ea5e9);
  color: var(--accent-primary, #0ea5e9);
}

.pagination .active a,
.pagination .active span {
  background: var(--accent-primary, #0ea5e9);
  border-color: var(--accent-primary, #0ea5e9);
  color: #fff;
  cursor: default;
}

.pagination .disabled a,
.pagination .disabled span {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* ================================================================
   REDUCED MOTION
   ================================================================ */

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

  .retry-info__spinner {
    animation: none;
    border-top-color: var(--accent-primary, #0ea5e9);
  }

  .network-status {
    transition: none;
  }
}