/**
 * Modals Component Styles
 * Modal dialogs, overlays, and toast notifications
 */

/* ============================================================================
   MODALS
   ============================================================================ */

.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  z-index: var(--z-modal);
}

.modal-overlay,
.backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal-backdrop);
  animation: fadeIn var(--transition-fast);
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain; /* Prevents iOS rubber-banding on backdrop */
}

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

.modal-content {
  position: relative;
  background: var(--surface-color);
  border-radius: var(--radius-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-5);
  animation: slideUp var(--transition-normal);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-round);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
  z-index: 1;
}

.modal-close:hover {
  background: rgba(0, 0, 0, 0.1);
}

.modal-close .material-icons {
  font-size: 24px;
  color: var(--text-secondary);
}

.modal-body {
  padding: var(--modal-spacing-md);
  overflow-y: auto;
  overscroll-behavior: contain; /* Prevents scroll leakage to background */
}

/* ============================================================================
   MODAL TABS (Generic styles for all tabbed modals)
   ============================================================================ */

.modal-tabs {
  display: flex;
  gap: var(--spacing-xs);
  padding: 0 var(--modal-spacing-md);
  border-bottom: 1px solid var(--border-color);
  background: var(--surface-color);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  flex-shrink: 0;
}

.modal-tabs::-webkit-scrollbar {
  display: none;
}

.modal-tab {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.modal-tab:hover {
  color: var(--text-primary);
}

.modal-tab.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.modal-tab .material-icons {
  font-size: 18px;
  vertical-align: middle;
  margin-right: var(--spacing-xs);
}

/* Tab content panels - hidden by default, shown when active */
.modal-tab-content {
  display: none;
}

.modal-tab-content.active {
  display: block;
}

/* Dark theme adjustments */
.dark-theme .modal-tabs {
  border-bottom-color: var(--border-color);
}

.dark-theme .modal-tab:hover {
  color: var(--text-primary);
}

/* ============================================================================
   TOAST NOTIFICATIONS (UX Improvement)
   ============================================================================ */

.toast {
  position: fixed;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  max-width: 500px;
  min-width: 320px;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--surface-color);
  color: var(--text-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-4);
  z-index: var(--z-tooltip);
  animation: toast-slide-up 0.3s ease-out;
}

@keyframes toast-slide-up {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.toast .material-icons {
  font-size: 24px;
  flex-shrink: 0;
}

.toast-message {
  flex: 1;
  font-size: var(--font-size-base);
  line-height: 1.5;
}

.toast .btn {
  flex-shrink: 0;
}

.toast-success {
  border-left: 4px solid var(--success-color);
  background: var(--success-bg);
}

.toast-success .material-icons {
  color: var(--success-color);
}

.toast-error {
  border-left: 4px solid var(--error-color);
  background: var(--error-bg);
}

.toast-error .material-icons {
  color: var(--error-color);
}

.toast-warning {
  border-left: 4px solid var(--warning-color);
  background: var(--warning-bg);
}

.toast-warning .material-icons {
  color: var(--warning-color);
}

.toast-info {
  border-left: 4px solid var(--info-color);
  background: var(--info-bg);
}

.toast-info .material-icons {
  color: var(--info-color);
}

/* Toast on mobile */
@media (max-width: 768px) {
  .toast {
    left: var(--spacing-md);
    right: var(--spacing-md);
    transform: translateX(0);
    min-width: auto;
  }

  @keyframes toast-slide-up {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

/* ============================================================================
   SKELETON LOADING PLACEHOLDERS (Story 1.1 - Instant Modal Opening)
   ============================================================================ */

/* Base skeleton field - mimics form input appearance */
.skeleton-field {
  height: 48px;
  background: var(--skeleton-bg, #E0E0E0);
  border-radius: 4px;
  animation: skeleton-pulse 1.5s ease-in-out infinite;
  margin-bottom: 16px;
}

/* Skeleton for larger areas like textareas */
.skeleton-field--large {
  height: 96px;
}

/* Skeleton for small inline elements */
.skeleton-field--small {
  height: 24px;
  width: 120px;
}

/* Skeleton for labels */
.skeleton-label {
  height: 16px;
  width: 80px;
  background: var(--skeleton-bg, #E0E0E0);
  border-radius: 4px;
  margin-bottom: 8px;
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

/* Group multiple skeleton fields together */
.skeleton-group {
  display: flex;
  flex-direction: column;
  gap: var(--modal-spacing-sm);
}

/* Pulse animation for skeleton loading effect */
@keyframes skeleton-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Reduced motion support - disable animation for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  .skeleton-field,
  .skeleton-label {
    animation: none;
    opacity: 0.7;
  }
}

/* Dark theme skeleton colors */
.dark-theme .skeleton-field,
.dark-theme .skeleton-label {
  --skeleton-bg: #424242;
}

/* ============================================================================
   DARK THEME ADJUSTMENTS
   ============================================================================ */

.dark-theme .modal-close:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* ============================================================================
   FORCED COLORS (Windows High Contrast Mode)
   ============================================================================ */

@media (forced-colors: active) {
  .modal-content {
    border: 2px solid ButtonText;
  }

  .modal-overlay,
  .backdrop {
    background: Canvas;
    opacity: 0.8;
  }

  .modal-close {
    border: 1px solid ButtonText;
  }

  .modal-tab {
    border-bottom: 2px solid transparent;
  }

  .modal-tab.active {
    border-bottom-color: Highlight;
    color: Highlight;
  }

  .toast {
    border: 2px solid ButtonText;
  }

  .toast-success {
    border-left-color: ButtonText;
  }

  .toast-error {
    border-left-color: LinkText;
  }
}