/**
 * Component Styles - Family Meal Planner
 * Reusable UI components with consistent styling
 */

/* === BUTTONS === */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  min-height: var(--touch-target-min);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
}

/* Button Variants */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-text-inverse);
  border-color: var(--color-secondary);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-secondary-hover);
  border-color: var(--color-secondary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background-color: var(--color-success);
  color: var(--color-text-inverse);
  border-color: var(--color-success);
}

.btn-accent:hover:not(:disabled) {
  background-color: var(--color-success-hover);
  border-color: var(--color-success-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border-primary);
}

.btn-outline:hover:not(:disabled) {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-border-secondary);
}

.btn-danger {
  background-color: var(--color-error);
  color: var(--color-text-inverse);
  border-color: var(--color-error);
}

.btn-danger:hover:not(:disabled) {
  background-color: var(--color-error-hover);
  border-color: var(--color-error-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-warning {
  background-color: var(--color-warning);
  color: var(--color-text-inverse);
  border-color: var(--color-warning);
}

.btn-warning:hover:not(:disabled) {
  background-color: var(--color-warning-hover);
  border-color: var(--color-warning-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-xs);
  min-height: 36px;
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-lg);
  min-height: 52px;
}

/* Icon-only buttons */
.btn-icon {
  padding: var(--space-2);
  min-width: var(--touch-target-min);
  min-height: var(--touch-target-min);
}

.btn-icon .btn-text {
  display: none;
}

.btn-icon .btn-icon {
  font-size: var(--font-size-lg);
}

/* Button with loading state */
.btn.loading {
  color: transparent;
  pointer-events: none;
}

.btn.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* === INPUTS === */

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.input-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.input-field {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  transition: all var(--transition-base);
  min-height: var(--touch-target-min);
}

.input-field:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.input-field:invalid {
  border-color: var(--color-border-error);
}

.input-field::placeholder {
  color: var(--color-text-muted);
}

/* Textarea */
.textarea {
  min-height: 100px;
  resize: vertical;
  font-family: inherit;
}

/* Select */
.select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 16px 12px;
  padding-right: var(--space-10);
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}

/* Checkbox and Radio */
.checkbox,
.radio {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.checkbox input,
.radio input {
  width: 18px;
  height: 18px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.checkbox input[type='checkbox'] {
  border-radius: var(--radius-sm);
}

.radio input[type='radio'] {
  border-radius: 50%;
}

/* Mobile: Ensure checkbox labels meet 44px minimum touch target */
@media (max-width: 767px) {
  .checkbox {
    min-height: var(--touch-target-min); /* 44px */
    padding: var(--space-2) 0; /* 8px vertical padding for better touch area */
  }

  /* Increase checkbox input size on mobile for better visibility and tapping */
  .checkbox input[type='checkbox'],
  .checkbox input[type='radio'] {
    width: 20px;
    height: 20px;
  }
}

/* === CARDS === */
/* Pattern: Uses .elevated-surface pattern (background, border, border-radius, box-shadow) */

.card {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: all var(--transition-base);
}

.card-elevated {
  box-shadow: var(--shadow-base);
}

.card-elevated:hover {
  box-shadow: var(--shadow-md);
}

.card-interactive {
  cursor: pointer;
  border-color: var(--color-border-secondary);
}

.card-interactive:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.card-interactive:active {
  transform: translateY(0);
}

.card-header {
  margin-bottom: var(--space-3);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.card-subtitle .badge {
  margin-right: 0; /* Rely on flex gap instead */
}

.card-content {
  margin-bottom: var(--space-3);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-primary);
}

/* === BADGES === */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.badge-primary {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.badge-secondary {
  background-color: var(--color-secondary-light);
  color: var(--color-secondary);
}

.badge-success {
  background-color: var(--color-success-light);
  color: var(--color-success);
}

.badge-warning {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
}

.badge-error {
  background-color: var(--color-error-light);
  color: var(--color-error);
}

/* === PILLS === */

.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.pill-remove {
  cursor: pointer;
  color: var(--color-text-muted);
  font-weight: var(--font-weight-bold);
  padding: 0 var(--space-1);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.pill-remove:hover {
  background-color: var(--color-error-light);
  color: var(--color-error);
}

/* === DIVIDERS === */

.divider {
  height: 1px;
  background-color: var(--color-border-primary);
  border: none;
  margin: var(--space-4) 0;
}

.divider-vertical {
  width: 1px;
  height: auto;
  background-color: var(--color-border-primary);
  margin: 0 var(--space-4);
}

/* === SPINNER === */

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border-primary);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.spinner-sm {
  width: 16px;
  height: 16px;
  border-width: 1.5px;
}

.spinner-lg {
  width: 32px;
  height: 32px;
  border-width: 3px;
}

/* === LOADING INDICATOR === */
/* Pattern: Uses .elevated-surface-lg pattern (background, border, border-radius, box-shadow) */

.loading-indicator {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-6);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-modal);
}

.loading-indicator[aria-hidden='true'] {
  display: none;
}

.loading-indicator[aria-hidden='false'] {
  display: flex;
}

.loading-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* === TOAST CONTAINER === */

.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 400px;
  pointer-events: none;
}

/* === MODAL CONTAINER === */

.modal-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-modal);
  pointer-events: none;
}

/* === MODAL STYLES === */

/* Modal Backdrop */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-bg-overlay);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  transition: opacity var(--transition-base);
}

/* Modal Container States */
.modal-container.modal-open,
.modal-container[aria-hidden='false'] {
  pointer-events: auto;
}

.modal-container.modal-open .modal-backdrop {
  opacity: 1;
}

.modal-container.modal-open .modal {
  opacity: 1;
  /* Transform removed - JavaScript positioning handles this to ensure 16px margins */
}

/* Modal Core */
.modal {
  position: fixed;
  /* Positioning handled by JavaScript on desktop (calculatePosition) for 16px margins */
  /* Mobile uses bottom sheet positioning via CSS media query */
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  z-index: var(--z-modal);
  opacity: 0;
  /* CRITICAL: Only transition opacity, not position/transform - JavaScript handles positioning */
  transition: opacity var(--transition-base);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border-primary);
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.modal-close {
  position: relative;
  font-size: var(--font-size-2xl);
  line-height: 1;
  color: var(--color-text-secondary);
}

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

.modal-body {
  padding: var(--space-6);
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-6);
  border-top: 1px solid var(--color-border-primary);
}

.modal-footer:empty {
  display: none;
}

/* Recipe Selector */
.recipe-selector {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-height: 100%;
}

.recipe-option {
  padding: var(--space-4);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  background-color: var(--color-bg-primary);
}

.recipe-option:active {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-primary);
}

@media (hover: hover) {
  .recipe-option:hover {
    background-color: var(--color-bg-tertiary);
    border-color: var(--color-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
  }
}

.recipe-option h4 {
  margin: 0 0 var(--space-2) 0;
  color: var(--color-text-primary);
}

.recipe-option p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* Modal Sizes */
.modal-small {
  width: 90%;
  max-width: 400px;
}

.modal-medium {
  width: 90%;
  max-width: 600px;
}

.modal-large {
  width: 90%;
  max-width: 800px;
}

/* Mobile: Remove width/margin rules - handled by .modal padding approach */
@media (max-width: 767px) {
  .modal-small,
  .modal-medium,
  .modal-large {
    max-width: none;
    /* Width and margin removed - handled by .modal padding below */
  }
}

.modal-full {
  width: 95vw;
  max-width: 95vw;
  height: 95vh;
}

/* Modal Animations */
.modal-container.modal-opening .modal-backdrop {
  animation: fadeIn var(--transition-base);
}

.modal-container.modal-opening .modal {
  animation: slideUp var(--transition-base);
}

.modal-container.modal-closing .modal-backdrop {
  animation: fadeOut var(--transition-base);
}

.modal-container.modal-closing .modal {
  animation: slideDown var(--transition-base);
}

/* Body Scroll Lock */
body.modal-open {
  overflow: hidden;
}

/* Mobile Responsive */
@media (max-width: 767px) {
  .modal-container {
    padding: 0;
    align-items: flex-end;
  }

  .modal {
    top: auto;
    bottom: 0;
    left: 16px; /* 16px margin from left edge */
    right: 16px; /* 16px margin from right edge */
    width: auto; /* Auto width fills space between left and right */
    transform: none;
    max-height: 90vh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    /* Keep internal padding for content spacing */
    padding-left: var(--space-6);
    padding-right: var(--space-6);
    padding-bottom: var(--space-6);
    /* Ensure modal header has sufficient touch target area (minimum 44px height on mobile) */
    /* Header padding (24px top + 24px bottom) + content ensures adequate touch area */
  }

  .modal-container.modal-opening .modal {
    animation: slideUpMobile var(--transition-base);
  }
}

/* Mobile Safe Area Support */
@media (max-width: 767px) {
  @supports (padding: max(0px)) {
    .modal {
      /* Use max() to ensure safe area insets are respected for positioning */
      left: max(16px, var(--safe-area-inset-left));
      right: max(16px, var(--safe-area-inset-right));
      padding-bottom: max(var(--space-6), var(--safe-area-inset-bottom));
      /* Keep internal padding for content spacing */
      padding-left: var(--space-6);
      padding-right: var(--space-6);
    }

    .modal-body {
      padding-bottom: max(var(--space-6), var(--safe-area-inset-bottom));
    }

    .modal-footer {
      padding-bottom: max(var(--space-6), var(--safe-area-inset-bottom));
    }
  }
}

/* === TOAST STYLES === */

/* Core Toast */
.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border-primary);
  min-width: 300px;
  max-width: 400px;
  pointer-events: auto;
  opacity: 0;
  transform: translateY(-10px);
  transition: all var(--transition-base);
}

.toast-content {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  flex: 1;
}

.toast-icon {
  font-size: var(--font-size-lg);
  line-height: 1;
  flex-shrink: 0;
}

.toast-message {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  line-height: var(--line-height-normal);
}

.toast-action {
  flex-shrink: 0;
  margin-left: var(--space-sm);
}

.toast-close {
  flex-shrink: 0;
  font-size: var(--font-size-lg);
  line-height: 1;
}

/* Toast Variants */
.toast-success {
  border-color: var(--color-success);
  background-color: var(--color-success-light);
}

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

.toast-error {
  border-color: var(--color-error);
  background-color: var(--color-error-light);
}

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

.toast-warning {
  border-color: var(--color-warning);
  background-color: var(--color-warning-light);
}

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

.toast-info {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.toast-info .toast-icon {
  color: var(--color-primary);
}

/* Toast States */
.toast-show {
  opacity: 1;
  transform: translateY(0);
}

.toast-hide {
  opacity: 0;
  transform: translateY(-10px);
}

/* Mobile Responsive */
@media (max-width: 767px) {
  .toast {
    width: calc(100vw - var(--space-8));
    max-width: none;
  }
}

/* === DROPDOWN STYLES === */

/* Core Dropdown */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
}

.dropdown-selected {
  flex: 1;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dropdown-arrow {
  font-size: var(--font-size-sm);
  transition: transform var(--transition-base);
}

.dropdown.open .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  right: 0;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  display: none;
  max-height: 320px;
  overflow-y: auto;
}

.dropdown.open .dropdown-menu {
  display: block;
  animation: slideUp 0.15s ease-out;
}

.dropdown-search {
  margin: var(--space-2);
  width: calc(100% - var(--space-4));
}

.dropdown-options {
  list-style: none;
  padding: 0;
  margin: 0;
}

.dropdown-option {
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  font-size: var(--font-size-sm);
}

.dropdown-option:hover {
  background-color: var(--color-bg-tertiary);
}

.dropdown-option.selected {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
}

.dropdown-option.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.dropdown-no-results {
  padding: var(--space-4);
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-style: italic;
}

/* Mobile Responsive */
@media (max-width: 767px) {
  .dropdown-menu {
    left: 0;
    right: 0;
    min-width: 100%;
  }
}

/* === GLOBAL REUSABLE UTILITIES === */

/* Full-Screen Overlay Base Pattern */
.overlay-base {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* Elevated Surface Pattern */
.elevated-surface {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.elevated-surface-sm {
  box-shadow: var(--shadow-base);
}

.elevated-surface-lg {
  box-shadow: var(--shadow-xl);
}

/* Visibility Animation States */
.hidden-animated {
  opacity: 0;
  pointer-events: none;
}

.visible-animated {
  opacity: 1;
  pointer-events: auto;
}

/* === KEYFRAME ANIMATIONS === */

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

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

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

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

@keyframes slideUpMobile {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

/* === RESPONSIVE UTILITIES === */

/* Mobile-first responsive design */
@media (max-width: 767px) {
  .btn .btn-text {
    display: none;
  }

  .btn {
    min-width: var(--touch-target-min);
    padding: var(--space-2);
  }

  .card {
    padding: var(--space-3);
  }

  .card-footer {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }
}

/* Tablet and up */
@media (min-width: 768px) {
  .btn .btn-text {
    display: inline;
  }

  .card-footer {
    flex-direction: row;
    align-items: center;
  }
}

/* Desktop and up */
@media (min-width: 1024px) {
  .card:hover {
    box-shadow: var(--shadow-md);
  }
}

/* === ACCESSIBILITY === */

/* High contrast mode */
@media (prefers-contrast: high) {
  .btn {
    border-width: 2px;
  }

  .card {
    border-width: 2px;
  }

  .input-field {
    border-width: 2px;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .btn,
  .card,
  .input-field {
    transition: none;
  }

  .spinner {
    animation: none;
  }

  .btn:hover {
    transform: none;
  }

  .card-interactive:hover {
    transform: none;
  }
}

/* === SHOPPING LIST COMPONENT === */

.shopping-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border-primary);
}

/* Mobile: Sticky header for long lists */
@media (max-width: 767px) {
  .shopping-list-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background-color: var(--color-bg-primary);
    padding-top: var(--space-3);
    padding-bottom: var(--space-3);
    margin-bottom: var(--space-4);
  }
}

.shopping-list-categories {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.shopping-category {
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  border: 1px solid var(--color-border-primary);
}

.category-header {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--color-primary);
}

.shopping-items {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.shopping-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2);
  border-radius: var(--radius);
  transition: background-color var(--transition-base);
}

/* Mobile: Better list layout for mobile screens */
@media (max-width: 767px) {
  .shopping-item {
    padding: var(--space-4);
    gap: var(--space-4);
  }

  .shopping-item .item-label {
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  .shopping-item .item-name {
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .shopping-item .item-recipes {
    font-size: var(--font-size-xs);
    line-height: var(--line-height-normal);
  }
}

.shopping-item:hover {
  background-color: var(--color-bg-secondary);
}

.shopping-item.checked {
  opacity: 0.6;
  text-decoration: line-through;
}

.shopping-item .item-label {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: baseline;
}

.shopping-item .item-name {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.shopping-item .item-recipes {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.item-checkbox {
  width: 18px;
  height: 18px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-border-primary);
  background-color: var(--color-bg-primary);
  cursor: pointer;
  transition: all var(--transition-base);
}

.item-checkbox:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.item-checkbox:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Mobile: Larger checkbox touch targets (WCAG 44px minimum) */
@media (max-width: 767px) {
  .item-checkbox {
    width: 44px;
    height: 44px;
  }
}

/* === INSTALL PROMPT === */

.install-prompt-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--color-primary-500);
  color: var(--color-text-inverse);
  padding: calc(var(--space-3) + var(--safe-area-inset-top)) var(--space-4) var(--space-3);
  padding-left: max(var(--space-4), var(--safe-area-inset-left));
  padding-right: max(var(--space-4), var(--safe-area-inset-right));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base);
}

.install-prompt-banner.hidden {
  transform: translateY(-100%);
}

.install-prompt-content {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
}

.install-prompt-icon {
  font-size: var(--font-size-lg);
}

.install-prompt-message {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.install-prompt-actions {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.install-prompt-dismiss {
  min-width: 32px;
  padding: var(--space-2);
  font-size: var(--font-size-lg);
  line-height: 1;
}

/* Install prompt modal (for iOS) */
.install-prompt-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.install-prompt-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.install-prompt-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  max-width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  z-index: 2001;
  box-shadow: var(--shadow-xl);
  opacity: 0;
  transition: all var(--transition-base);
  pointer-events: none;
}

.install-prompt-modal.visible {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  pointer-events: auto;
}

.install-prompt-modal-content h3 {
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

.install-prompt-instructions {
  margin-bottom: var(--space-4);
  color: var(--color-text-secondary);
}

.install-prompt-instructions ol {
  margin-left: var(--space-4);
  padding-left: var(--space-2);
}

.install-prompt-instructions li {
  margin-bottom: var(--space-2);
}

/* === OFFLINE INDICATOR === */

.offline-indicator {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--color-warning-500);
  color: var(--color-text-inverse);
  padding: calc(var(--space-3) + var(--safe-area-inset-top)) var(--space-4) var(--space-3);
  padding-left: max(var(--space-4), var(--safe-area-inset-left));
  padding-right: max(var(--space-4), var(--safe-area-inset-right));
  display: flex;
  align-items: center;
  gap: var(--space-2);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base);
}

.offline-indicator.hidden {
  transform: translateY(-100%);
}

.offline-indicator-icon {
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.offline-indicator-message {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

/* Adjust offline indicator position if install prompt is visible */
/* Note: Offline indicator will be positioned below install prompt via JavaScript */

/* === SHARE BUTTON === */

.btn-share {
  /* Uses existing .btn styles */
}

.week-share-btn {
  margin-left: var(--space-2);
}

/* === TOUCH INTERACTIONS === */

/* Visual feedback for touch interactions on Safari */
.touch-active {
  opacity: 0.7;
  transform: scale(0.98);
  transition:
    opacity 0.15s,
    transform 0.15s;
}