/* ============================================
   FoodSelection Mobile Optimizations
   Touch-friendly and responsive enhancements
   ============================================ */

/* ==========================================
   Mobile-First Touch Targets
   iOS/Android guidelines: min 44x44px
   ========================================== */

/* Enhanced Touch Targets for All Clickable Elements */
@media (max-width: 768px) {
  /* Increase minimum touch target size */
  .fs-button,
  .fs-food-tag-remove,
  .custom-food-chip,
  .btn,
  button {
    min-height: 48px;
    min-width: 48px;
  }

  /* Food selection items need larger touch areas */
  .selected-food-item {
    min-height: 56px;
    padding: var(--fs-spacing-md) var(--fs-spacing-lg);
    position: relative;
  }

  /* Serving controls with better spacing */
  .serving-controls-compact {
    gap: var(--fs-spacing-md);
  }

  .serving-controls-compact .form-select-sm,
  .serving-controls-compact select {
    min-height: 44px;
    padding: var(--fs-spacing-sm) var(--fs-spacing-md);
    font-size: 16px; /* Prevents iOS zoom */
  }

  /* Remove button with larger touch area */
  .btn-outline-danger,
  .remove-btn {
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

/* ==========================================
   Bottom Sheet Pattern for Mobile Search
   ========================================== */
@media (max-width: 768px) {
  .food-search-modal {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--fs-bg-primary);
    border-radius: var(--fs-radius-lg) var(--fs-radius-lg) 0 0;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
    z-index: var(--fs-z-modal);
    transform: translateY(100%);
    transition: transform var(--fs-transition-slow);
    max-height: 85vh;
    overflow-y: auto;
    padding-top: var(--fs-spacing-md);
  }

  .food-search-modal.active {
    transform: translateY(0);
  }

  /* Drag handle for bottom sheet */
  .food-search-modal::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 4px;
    background: var(--fs-border-default);
    border-radius: var(--fs-radius-pill);
  }

  /* Search input in bottom sheet */
  .food-search-modal .fs-search-wrapper {
    margin: var(--fs-spacing-lg);
    position: sticky;
    top: 0;
    background: var(--fs-bg-primary);
    z-index: 10;
  }
}

/* ==========================================
   Mobile-Optimized Select2 Overrides
   ========================================== */
@media (max-width: 768px) {
  /* Make Select2 dropdowns full width on mobile */
  .select2-container {
    width: 100% !important;
  }

  /* Larger touch targets for Select2 */
  .select2-selection--multiple {
    min-height: 48px !important;
    padding: var(--fs-spacing-sm) !important;
  }

  /* Select2 search field */
  .select2-search__field {
    font-size: 16px !important; /* Prevent iOS zoom */
    height: 44px !important;
    padding: var(--fs-spacing-sm) !important;
  }

  /* Select2 results */
  .select2-results__option {
    padding: var(--fs-spacing-md) var(--fs-spacing-lg) !important;
    min-height: 48px;
    display: flex;
    align-items: center;
  }

  /* Select2 choice tags */
  .select2-selection__choice {
    min-height: 36px !important;
    display: flex !important;
    align-items: center !important;
    padding: var(--fs-spacing-sm) var(--fs-spacing-md) !important;
    margin: var(--fs-spacing-xs) !important;
  }

  .select2-selection__choice__remove {
    width: 24px !important;
    height: 24px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 18px !important;
    margin-right: var(--fs-spacing-sm) !important;
  }

  /* Full screen dropdown on mobile */
  .select2-dropdown {
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    top: auto !important;
    width: 100% !important;
    max-height: 70vh !important;
    border-radius: var(--fs-radius-lg) var(--fs-radius-lg) 0 0 !important;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15) !important;
  }
}

/* ==========================================
   Swipe Gestures Support
   ========================================== */
.swipeable-item {
  position: relative;
  overflow: hidden;
  touch-action: pan-y; /* Allow vertical scroll, handle horizontal swipe */
}

.swipeable-item.swiping {
  transition: transform var(--fs-transition-base);
}

.swipeable-item.swipe-left {
  transform: translateX(-80px);
}

.swipe-action {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 80px;
  background: var(--fs-error);
  color: var(--fs-text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-font-size-lg);
}

/* Visual feedback for swipe */
@media (max-width: 768px) {
  .selected-food-item {
    position: relative;
    overflow: hidden;
  }

  .selected-food-item::after {
    content: '← Swipe to remove';
    position: absolute;
    right: var(--fs-spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    color: var(--fs-text-muted);
    font-size: var(--fs-font-size-xs);
    opacity: 0;
    transition: opacity var(--fs-transition-base);
    pointer-events: none;
  }

  .selected-food-item:first-child::after {
    opacity: 1;
    animation: fadeOut 3s forwards;
  }
}

@keyframes fadeOut {
  0%, 70% { opacity: 1; }
  100% { opacity: 0; }
}

/* ==========================================
   Responsive Grid Layouts
   ========================================== */
@media (max-width: 768px) {
  /* Stack food selection components vertically */
  .split-food-selector-container {
    padding: var(--fs-spacing-md);
    margin: 0 -15px; /* Full width on mobile */
  }

  /* Single column for selected foods */
  .selected-foods-grid {
    grid-template-columns: 1fr;
    gap: var(--fs-spacing-sm);
  }

  /* Custom food chips - 2 columns on mobile */
  .custom-food-chips-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--fs-spacing-sm);
  }

  .custom-food-chip {
    padding: var(--fs-spacing-md);
    font-size: var(--fs-font-size-sm);
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
  }

  /* Stack meal selection vertically */
  .meal-selection-row {
    flex-direction: column;
    align-items: stretch;
    gap: var(--fs-spacing-sm);
  }

  .meal-label {
    font-size: var(--fs-font-size-lg);
    margin-bottom: var(--fs-spacing-xs);
  }

  .meal-select {
    width: 100%;
    min-height: 48px;
  }
}

/* ==========================================
   Loading States for Slow Connections
   ========================================== */
.fs-loading-mobile {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--fs-spacing-3xl);
  text-align: center;
}

.fs-loading-mobile .spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--fs-border-default);
  border-top-color: var(--fs-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.fs-loading-mobile .loading-text {
  margin-top: var(--fs-spacing-lg);
  color: var(--fs-text-secondary);
  font-size: var(--fs-font-size-base);
}

/* Skeleton loaders for food items */
.skeleton-food-item {
  height: 56px;
  background: linear-gradient(90deg, 
    var(--fs-bg-secondary) 25%, 
    var(--fs-bg-tertiary) 50%, 
    var(--fs-bg-secondary) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: var(--fs-radius-md);
  margin-bottom: var(--fs-spacing-sm);
}

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

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ==========================================
   Voice Input Support
   ========================================== */
.voice-input-btn {
  position: absolute;
  right: var(--fs-spacing-md);
  top: 50%;
  transform: translateY(-50%);
  background: var(--fs-primary);
  color: var(--fs-text-inverse);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--fs-transition-all);
}

.voice-input-btn:active {
  background: var(--fs-primary-hover);
  transform: translateY(-50%) scale(0.95);
}

.voice-input-btn.recording {
  background: var(--fs-error);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { transform: translateY(-50%) scale(1); }
  50% { transform: translateY(-50%) scale(1.1); }
}

/* ==========================================
   Collapsible Sections for Mobile
   ========================================== */
@media (max-width: 768px) {
  .collapsible-section {
    border: 1px solid var(--fs-border-default);
    border-radius: var(--fs-radius-md);
    margin-bottom: var(--fs-spacing-md);
    overflow: hidden;
  }

  .collapsible-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--fs-spacing-md) var(--fs-spacing-lg);
    background: var(--fs-bg-secondary);
    cursor: pointer;
    min-height: 48px;
    user-select: none;
  }

  .collapsible-header:active {
    background: var(--fs-bg-tertiary);
  }

  .collapsible-header .badge {
    background: var(--fs-primary);
    color: var(--fs-text-inverse);
    padding: var(--fs-spacing-xs) var(--fs-spacing-sm);
    border-radius: var(--fs-radius-pill);
    font-size: var(--fs-font-size-xs);
    min-width: 24px;
    text-align: center;
  }

  .collapsible-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--fs-transition-slow);
  }

  .collapsible-section.expanded .collapsible-content {
    max-height: 1000px;
    padding: var(--fs-spacing-md);
  }

  .collapsible-header .chevron {
    transition: transform var(--fs-transition-base);
  }

  .collapsible-section.expanded .chevron {
    transform: rotate(180deg);
  }
}

/* ==========================================
   Haptic Feedback Visual Cues
   ========================================== */
@media (max-width: 768px) {
  /* Visual feedback for touch interactions */
  .touchable:active {
    transform: scale(0.98);
    opacity: 0.9;
  }

  .fs-button:active:not(:disabled) {
    transform: scale(0.95);
  }

  .custom-food-chip:active {
    transform: scale(0.95);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
  }

  /* Long press visual feedback */
  .long-press-target {
    position: relative;
  }

  .long-press-target::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.2);
    transition: width 0.3s, height 0.3s;
  }

  .long-press-target.pressing::before {
    width: 100%;
    height: 100%;
  }
}

/* ==========================================
   Optimized Animations for Mobile
   ========================================== */
@media (max-width: 768px) {
  /* Reduce animation complexity on mobile */
  * {
    animation-duration: 0.2s !important;
  }

  /* Disable hover effects on mobile */
  .fs-food-item:hover,
  .fs-button:hover,
  .custom-food-chip:hover {
    transform: none;
  }

  /* Simple fade transitions only */
  .fs-food-tag {
    animation: simpleFadeIn 0.2s ease-out;
  }

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

/* ==========================================
   Fixed Bottom Action Bar
   ========================================== */
@media (max-width: 768px) {
  .mobile-action-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--fs-bg-primary);
    border-top: 1px solid var(--fs-border-default);
    padding: var(--fs-spacing-md);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: var(--fs-z-sticky);
    display: flex;
    gap: var(--fs-spacing-md);
  }

  .mobile-action-bar .fs-button {
    flex: 1;
    margin: 0;
  }

  /* Add padding to prevent content from being hidden */
  .split-food-selector-container {
    padding-bottom: 80px;
  }
}

/* ==========================================
   Accessibility Enhancements for Mobile
   ========================================== */
@media (max-width: 768px) {
  /* Larger focus indicators for mobile */
  *:focus-visible {
    outline: 3px solid var(--fs-primary);
    outline-offset: 2px;
  }

  /* Better contrast for outdoor visibility */
  @media (prefers-contrast: high) {
    .fs-food-tag,
    .custom-food-chip {
      border-width: 2px;
      font-weight: var(--fs-font-weight-bold);
    }
  }

  /* Reduced motion for accessibility */
  @media (prefers-reduced-motion: reduce) {
    * {
      animation: none !important;
      transition: none !important;
    }
  }
}

/* ==========================================
   Landscape Mode Adjustments
   ========================================== */
@media (max-width: 768px) and (orientation: landscape) {
  /* Reduce vertical spacing in landscape */
  .split-food-selector-container {
    padding: var(--fs-spacing-sm);
  }

  .meal-selection-row,
  .food-search-row,
  .selected-foods-display {
    margin-bottom: var(--fs-spacing-md);
  }

  /* Two column layout in landscape */
  .selected-foods-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Reduce bottom sheet height */
  .food-search-modal,
  .select2-dropdown {
    max-height: 90vh !important;
  }
}

/* ==========================================
   iOS-Specific Fixes
   ========================================== */
@supports (-webkit-touch-callout: none) {
  /* iOS elastic scroll */
  .food-search-modal,
  .select2-dropdown {
    -webkit-overflow-scrolling: touch;
  }

  /* Prevent text selection on buttons */
  .fs-button,
  .custom-food-chip {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
  }

  /* Fix for iOS safe areas */
  .mobile-action-bar {
    padding-bottom: env(safe-area-inset-bottom, 16px);
  }
}

/* ==========================================
   Android-Specific Fixes
   ========================================== */
@media screen and (-webkit-min-device-pixel-ratio: 0) {
  /* Android input focus fix */
  input[type="text"],
  input[type="search"],
  select {
    -webkit-appearance: none;
    border-radius: 0;
  }
}