/**
 * Transit Route UI Components
 * v0.2.0
 *
 * Shared UI components: Error Modal, Toast notifications
 * Uses design tokens from design-tokens.css
 */

/* ========================================
   Error Modal
   ======================================== */

.error-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-overlay, rgba(0, 0, 0, 0.5));
  z-index: var(--z-modal-backdrop, 300);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal, 250ms ease),
              visibility var(--transition-normal, 250ms ease);
}

.error-modal-backdrop.visible {
  opacity: 1;
  visibility: visible;
}

.error-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background: var(--bg-primary, #ffffff);
  border-radius: var(--radius-lg, 12px);
  box-shadow: var(--shadow-xl, 0 20px 25px -5px rgb(0 0 0 / 0.1));
  z-index: var(--z-modal, 400);
  width: 90%;
  max-width: 420px;
  max-height: 90vh;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal, 250ms ease),
              visibility var(--transition-normal, 250ms ease),
              transform var(--transition-normal, 250ms ease);
}

.error-modal.visible {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.error-modal-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-3, 12px);
  padding: var(--spacing-4, 16px) var(--spacing-5, 20px);
  border-bottom: 1px solid var(--border-light, #e2e8f0);
}

.error-modal-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full, 9999px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.error-modal-icon.error {
  background: var(--alert-severe-bg, #fef2f2);
  color: var(--alert-severe, #ef4444);
}

.error-modal-icon.warning {
  background: var(--alert-warning-bg, #fffbeb);
  color: var(--alert-warning, #f59e0b);
}

.error-modal-icon.info {
  background: var(--alert-info-bg, #eff6ff);
  color: var(--alert-info, #3b82f6);
}

.error-modal-title {
  flex: 1;
  font-size: var(--font-size-lg, 18px);
  font-weight: var(--font-weight-semibold, 600);
  color: var(--text-primary, #1e293b);
  margin: 0;
}

.error-modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--text-secondary, #64748b);
  cursor: pointer;
  border-radius: var(--radius-sm, 4px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast, 150ms ease),
              color var(--transition-fast, 150ms ease);
}

.error-modal-close:hover {
  background: var(--bg-tertiary, #f1f5f9);
  color: var(--text-primary, #1e293b);
}

.error-modal-body {
  padding: var(--spacing-5, 20px);
}

.error-modal-code {
  display: inline-block;
  padding: var(--spacing-1, 4px) var(--spacing-2, 8px);
  background: var(--bg-tertiary, #f1f5f9);
  border-radius: var(--radius-sm, 4px);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm, 12px);
  color: var(--text-secondary, #64748b);
  margin-bottom: var(--spacing-3, 12px);
}

.error-modal-message {
  font-size: var(--font-size-base, 14px);
  color: var(--text-primary, #1e293b);
  line-height: var(--line-height-relaxed, 1.75);
  margin: 0;
}

.error-modal-detail {
  margin-top: var(--spacing-3, 12px);
  padding: var(--spacing-3, 12px);
  background: var(--bg-secondary, #f8fafc);
  border-radius: var(--radius-md, 8px);
  font-size: var(--font-size-sm, 12px);
  color: var(--text-secondary, #64748b);
  font-family: var(--font-mono);
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 120px;
  overflow-y: auto;
}

.error-modal-footer {
  display: flex;
  gap: var(--spacing-3, 12px);
  padding: var(--spacing-4, 16px) var(--spacing-5, 20px);
  border-top: 1px solid var(--border-light, #e2e8f0);
  justify-content: flex-end;
}

.error-modal-btn {
  padding: var(--spacing-2, 8px) var(--spacing-4, 16px);
  border-radius: var(--radius-md, 8px);
  font-size: var(--font-size-base, 14px);
  font-weight: var(--font-weight-medium, 500);
  cursor: pointer;
  transition: background var(--transition-fast, 150ms ease),
              border-color var(--transition-fast, 150ms ease),
              transform var(--transition-fast, 150ms ease);
  min-height: var(--btn-height-md, 40px);
}

.error-modal-btn:active {
  transform: scale(0.98);
}

.error-modal-btn-primary {
  background: var(--color-primary, #3b82f6);
  color: var(--text-inverse, #ffffff);
  border: none;
}

.error-modal-btn-primary:hover {
  background: var(--color-primary-hover, #2563eb);
}

.error-modal-btn-secondary {
  background: transparent;
  color: var(--text-secondary, #64748b);
  border: 1px solid var(--border-medium, #cbd5e1);
}

.error-modal-btn-secondary:hover {
  background: var(--bg-tertiary, #f1f5f9);
  border-color: var(--border-dark, #94a3b8);
}

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

.toast-container {
  position: fixed;
  bottom: var(--spacing-5, 20px);
  right: var(--spacing-5, 20px);
  z-index: var(--z-toast, 500);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2, 8px);
  pointer-events: none;
  max-width: 400px;
  width: calc(100% - 40px);
}

@media (max-width: 480px) {
  .toast-container {
    left: var(--spacing-3, 12px);
    right: var(--spacing-3, 12px);
    bottom: var(--spacing-3, 12px);
    width: auto;
  }
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3, 12px);
  padding: var(--spacing-3, 12px) var(--spacing-4, 16px);
  background: var(--bg-primary, #ffffff);
  border-radius: var(--radius-lg, 12px);
  box-shadow: var(--shadow-lg, 0 10px 15px -3px rgb(0 0 0 / 0.1));
  border-left: 4px solid var(--alert-info, #3b82f6);
  pointer-events: auto;
  opacity: 0;
  transform: translateX(100%);
  transition: opacity var(--transition-normal, 250ms ease),
              transform var(--transition-normal, 250ms ease);
}

.toast.visible {
  opacity: 1;
  transform: translateX(0);
}

.toast.removing {
  opacity: 0;
  transform: translateX(100%);
}

.toast.error {
  border-left-color: var(--alert-severe, #ef4444);
}

.toast.warning {
  border-left-color: var(--alert-warning, #f59e0b);
}

.toast.info {
  border-left-color: var(--alert-info, #3b82f6);
}

.toast.success {
  border-left-color: var(--status-ontime, #22c55e);
}

.toast-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.toast.error .toast-icon {
  color: var(--alert-severe, #ef4444);
}

.toast.warning .toast-icon {
  color: var(--alert-warning, #f59e0b);
}

.toast.info .toast-icon {
  color: var(--alert-info, #3b82f6);
}

.toast.success .toast-icon {
  color: var(--status-ontime, #22c55e);
}

.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-title {
  font-size: var(--font-size-base, 14px);
  font-weight: var(--font-weight-medium, 500);
  color: var(--text-primary, #1e293b);
  margin: 0 0 var(--spacing-1, 4px) 0;
}

.toast-message {
  font-size: var(--font-size-sm, 12px);
  color: var(--text-secondary, #64748b);
  margin: 0;
  word-break: break-word;
}

.toast-close {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border: none;
  background: transparent;
  color: var(--text-tertiary, #94a3b8);
  cursor: pointer;
  border-radius: var(--radius-sm, 4px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast, 150ms ease),
              background var(--transition-fast, 150ms ease);
}

.toast-close:hover {
  color: var(--text-primary, #1e293b);
  background: var(--bg-tertiary, #f1f5f9);
}

.toast-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: currentColor;
  opacity: 0.3;
  border-radius: 0 0 0 var(--radius-lg, 12px);
}

.toast-actions {
  display: flex;
  gap: var(--spacing-2, 8px);
  margin-top: var(--spacing-2, 8px);
}

.toast-action-btn {
  padding: var(--spacing-1, 4px) var(--spacing-2, 8px);
  font-size: var(--font-size-sm, 12px);
  font-weight: var(--font-weight-medium, 500);
  border: none;
  background: transparent;
  color: var(--color-primary, #3b82f6);
  cursor: pointer;
  border-radius: var(--radius-sm, 4px);
  transition: background var(--transition-fast, 150ms ease);
}

.toast-action-btn:hover {
  background: var(--color-primary-light, #dbeafe);
}

/* ========================================
   Dark Mode Support
   ======================================== */

@media (prefers-color-scheme: dark) {
  .error-modal,
  .toast {
    background: var(--bg-secondary, #1e293b);
  }

  .error-modal-header,
  .error-modal-footer {
    border-color: var(--border-light, #334155);
  }

  .error-modal-code,
  .error-modal-detail {
    background: var(--bg-tertiary, #334155);
  }
}

/* ========================================
   Animations
   ======================================== */

@keyframes shake {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  10%, 30%, 50%, 70%, 90% { transform: translate(-50%, -50%) scale(1) translateX(-5px); }
  20%, 40%, 60%, 80% { transform: translate(-50%, -50%) scale(1) translateX(5px); }
}

.error-modal.shake {
  animation: shake 0.5s ease-in-out;
}