/**
 * Header Section Styles
 * App header, navigation, logo, and header actions
 */

/* ============================================================================
   HEADER
   ============================================================================ */

.app-header {
  position: sticky;
  top: 0;
  background: var(--surface-color);
  box-shadow: var(--shadow-1);
  z-index: var(--z-sticky);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo {
  height: 40px;
  width: auto;
}

.restaurant-name {
  font-size: var(--font-size-xl);
  font-weight: 500;
  color: var(--text-primary);
  margin: 0;
}

.header-actions {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

/* ============================================================================
   ICON BUTTONS
   ============================================================================ */

.icon-button {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-round);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
  position: relative;
}

.icon-button:hover {
  background: rgba(0, 0, 0, 0.04);
}

.icon-button:active {
  background: rgba(0, 0, 0, 0.1);
}

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

.language-label {
  position: absolute;
  bottom: 2px;
  right: 2px;
  font-size: 10px;
  font-weight: 700;
  background: var(--primary-color);
  color: var(--primary-contrast);
  padding: 2px 4px;
  border-radius: 2px;
}

/* Dark mode: ensure language badge meets WCAG AA 4.5:1 contrast */
.dark-theme .language-label {
  background: #1565c0;
  color: #ffffff;
}

.cart-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  background: var(--error-color);
  color: white;
  font-size: 11px;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

.button-primary {
  background: var(--primary-color);
  color: var(--primary-contrast);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-1);
  width: 100%;
}

.button-primary:hover {
  background: var(--primary-dark);
  box-shadow: var(--shadow-2);
}

.button-primary:active {
  transform: scale(0.98);
}

/* ============================================================================
   SEARCH BAR (Located under header)
   ============================================================================ */

.search-section {
  background: var(--surface-color);
  padding: var(--spacing-md) 0;
  box-shadow: var(--shadow-1);
}

.search-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--background-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: box-shadow var(--transition-fast);
}

.search-input-wrapper:focus-within {
  box-shadow: 0 0 0 2px var(--primary-alpha-30);
}

/* Focus highlight animation for keyboard shortcut */
.search-input-wrapper:has(.search-input.focus-highlight) {
  animation: search-focus-pulse 0.3s ease-out;
}

@keyframes search-focus-pulse {
  0% {
    box-shadow: 0 0 0 0px var(--primary-color);
  }
  50% {
    box-shadow: 0 0 0 8px transparent;
  }
  100% {
    box-shadow: 0 0 0 2px var(--primary-alpha-30);
  }
}

.search-icon {
  color: var(--text-secondary);
  margin-right: var(--spacing-sm);
}

.search-input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-size: var(--font-size-base);
  color: var(--text-primary);
}

/* Keyboard shortcut hint */
.search-input-wrapper::after {
  content: 'Ctrl+K';
  display: none;
  font-size: var(--font-size-xs);
  color: var(--text-disabled);
  padding: 2px 6px;
  border: 1px solid var(--divider-color);
  border-radius: var(--radius-sm);
  background: var(--surface-color);
  font-family: monospace;
}

@media (min-width: 768px) {
  .search-input:not(:focus):placeholder-shown ~ .search-input-wrapper::after {
    display: block;
  }
}

/* Show Cmd on Mac */
@supports (-webkit-backdrop-filter: blur(1px)) {
  .search-input-wrapper::after {
    content: '⌘K';
  }
}

.search-input::placeholder {
  color: var(--text-secondary);
}

.search-clear {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-round);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.search-clear:hover {
  background: rgba(0, 0, 0, 0.04);
}

.search-clear .material-icons {
  font-size: 20px;
  color: var(--text-secondary);
}

/* Search results message */
.search-results-message {
  display: none;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--primary-alpha-10);
  border-left: 3px solid var(--primary-color);
  border-radius: var(--radius-md);
  margin: var(--spacing-md) auto;
  max-width: 1200px;
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.search-results-message .material-icons {
  color: var(--primary-color);
  font-size: 20px;
}

.search-results-message strong {
  color: var(--text-primary);
}

/* Search highlight in results */
.search-highlight {
  background: var(--secondary-color);
  color: var(--secondary-contrast);
  padding: 2px 4px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: background var(--transition-fast);
}

.dark-theme .search-highlight {
  background: var(--secondary-dark);
  color: var(--text-primary);
}

/* Search suggestions dropdown */
.search-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--surface-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-4);
  margin-top: var(--spacing-xs);
  z-index: var(--z-dropdown, 100);
  max-height: 300px;
  overflow-y: auto;
  animation: slideDown 0.2s ease-out;
}

.suggestions-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--divider-color);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

.suggestions-clear {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-round);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.suggestions-clear:hover {
  background: rgba(0, 0, 0, 0.04);
}

.suggestions-clear .material-icons {
  font-size: 18px;
  color: var(--text-secondary);
}

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

.suggestion-item button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  transition: background var(--transition-fast);
  color: var(--text-primary);
}

.suggestion-item button:hover {
  background: var(--hover-overlay);
}

.suggestion-item button:active {
  background: var(--active-overlay);
}

.suggestion-item .material-icons {
  font-size: 18px;
  color: var(--text-secondary);
}

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

/* ============================================================================
   CATEGORY TABS (Located under search)
   ============================================================================ */

/* Group that sticks, containing optional banner and categories */
.sticky-header-group {
  position: sticky;
  top: 76px; /* Adjusted for larger header height */
  background: var(--surface-color);
  box-shadow: var(--shadow-1);
  z-index: calc(var(--z-sticky) - 1);
  /* Ensure background covers scrolling content underneath */
}

.categories-nav {
  position: relative; /* Reset from sticky */
  background: var(--surface-color);
  /* Removed box-shadow as it is now on the group */
  z-index: auto; /* Reset z-index */
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  /* Scroll snapping for smooth category selection */
  scroll-snap-type: x proximity;
  scroll-behavior: smooth;
}

.categories-nav::-webkit-scrollbar {
  display: none;
}

/* Fade edges to indicate scrollable content */
.categories-nav::before,
.categories-nav::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 40px;
  pointer-events: none;
  z-index: 1;
  transition: opacity var(--transition-normal);
}

.categories-nav::before {
  left: 0;
  background: linear-gradient(to right, var(--surface-color) 0%, transparent 100%);
  opacity: 0;
}

.categories-nav::after {
  right: 0;
  background: linear-gradient(to left, var(--surface-color) 0%, transparent 100%);
}

.categories-nav.scroll-start::before {
  opacity: 0;
}

.categories-nav.scroll-end::after {
  opacity: 0;
}

.categories-nav.scroll-middle::before,
.categories-nav.scroll-middle::after {
  opacity: 1;
}

.categories-scroll {
  display: flex;
  padding: 0 var(--spacing-md);
  min-width: min-content;
}

.category-tab {
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--text-secondary);
  font-weight: 500;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  background: none;
  cursor: pointer;
  border-radius: 0;
  /* Scroll snap alignment */
  scroll-snap-align: start;
  scroll-snap-stop: normal;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  position: relative;
}

/* Category icon/emoji styling */
.category-icon {
  font-size: 1.2em;
  display: inline-block;
  transition: transform var(--transition-normal);
  line-height: 1;
  /* Better emoji rendering */
  font-variant-emoji: emoji;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

.category-name {
  transition: transform var(--transition-fast);
}

/* Enhanced hover effect with subtle lift */
.category-tab:hover {
  color: var(--primary-color);
  background: var(--primary-alpha-10);
  transform: translateY(-2px);
}

/* Animate icons/emojis on hover with bounce */
.category-tab:hover .category-icon {
  animation: icon-bounce 0.5s ease-in-out;
  transform: scale(1.15);
}

@keyframes icon-bounce {
  0%, 100% { transform: scale(1.15) translateY(0); }
  25% { transform: scale(1.25) translateY(-3px); }
  50% { transform: scale(1.15) translateY(0); }
  75% { transform: scale(1.2) translateY(-1px); }
}

/* Active state with stronger visual feedback */
.category-tab.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
  font-weight: 600;
  background: var(--primary-alpha-10);
}

/* Active tab icon gets a subtle glow and scale */
.category-tab.active .category-icon {
  transform: scale(1.1);
  filter: drop-shadow(0 0 6px var(--primary-color));
}

/* Smooth transition on category name */
.category-tab:hover .category-name {
  transform: translateX(2px);
}

/* RTL adjustments */
[dir="rtl"] .category-tab:hover .category-name {
  transform: translateX(-2px);
}

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

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

.dark-theme .icon-button:active {
  background: rgba(255, 255, 255, 0.12);
}

.dark-theme .category-tab:hover {
  background: rgba(255, 255, 255, 0.05);
}

.dark-theme .search-input-wrapper {
  background: var(--surface-color);
}

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

/* ============================================================================
   RTL SUPPORT
   ============================================================================ */

[dir="rtl"] .logo-container {
  flex-direction: row-reverse;
}

[dir="rtl"] .search-icon {
  margin-right: 0;
  margin-left: var(--spacing-sm);
}

[dir="rtl"] .cart-badge,
[dir="rtl"] .language-label {
  right: auto;
  left: 4px;
}

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

@media (forced-colors: active) {
  .app-header {
    border-bottom: 1px solid ButtonText;
  }

  .icon-button {
    border: 1px solid ButtonText;
  }

  .search-input-wrapper {
    border: 1px solid ButtonText;
  }

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

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

  .cart-badge {
    border: 1px solid ButtonText;
    background: Highlight;
    color: HighlightText;
  }

  .language-label {
    border: 1px solid ButtonText;
  }

  .search-highlight {
    background: Highlight;
    color: HighlightText;
  }

  .search-suggestions {
    border: 1px solid ButtonText;
  }

  .button-primary {
    border: 1px solid ButtonText;
  }
}