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

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

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

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--mm-sp-4);
  max-width: 1200px;
  margin: 0 auto;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--mm-sp-2);
}

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

.restaurant-name {
  font-size: var(--mm-fs-xl);
  font-family: var(--mm-ff-heading);
  font-weight: var(--mm-fw-medium);
  color: var(--mm-text);
  margin: 0;
}

.header-actions {
  display: flex;
  gap: var(--mm-sp-2);
  align-items: center;
}

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

.icon-button {
  width: 44px;
  height: 44px;
  border-radius: var(--mm-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--mm-dur-short3) var(--mm-ease-standard);
  position: relative;
}

.icon-button:hover {
  background: rgb(var(--mm-shadow-rgb) / 0.04);
}

.icon-button:active {
  background: rgb(var(--mm-shadow-rgb) / 0.1);
}

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

/* ---- Theme toggle ---- */
.theme-toggle {
  overflow: visible;
}

.theme-icon {
  transition: transform 0.2s var(--mm-ease-standard);
}

.theme-icon-spin {
  animation: theme-icon-spin 0.35s var(--mm-ease-standard);
}

@keyframes theme-icon-spin {
  0%   { transform: scale(0.6) rotate(-90deg); opacity: 0.3; }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

.theme-mode-dot {
  position: absolute;
  bottom: 4px;
  right: 4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1.5px solid var(--mm-surface);
  background: var(--mm-text-secondary);
  transition: background 0.2s var(--mm-ease-standard);
  pointer-events: none;
}

.theme-mode-dot[data-mode="auto"]  { background: var(--mm-brand-functional); }
.theme-mode-dot[data-mode="light"] { background: var(--mm-tertiary-40); }
.theme-mode-dot[data-mode="dark"]  { background: var(--mm-secondary-40); }

@media (prefers-reduced-motion: reduce) {
  .theme-icon-spin { animation: none; }
  .theme-icon { transition: none; }
}

.language-label {
  position: absolute;
  bottom: 2px;
  right: 2px;
  font-size: 10px;
  font-weight: var(--mm-fw-bold);
  background: var(--mm-brand-functional);
  color: var(--mm-on-primary);
  padding: 2px 4px;
  border-radius: 2px;
}

.cart-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  background: var(--mm-error-40);
  color: white;
  font-size: 11px;
  font-weight: var(--mm-fw-bold);
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

.button-primary {
  background: var(--mm-brand-functional);
  color: var(--mm-on-primary);
  padding: var(--mm-sp-2) var(--mm-sp-6);
  border-radius: var(--mm-radius-md);
  font-weight: var(--mm-fw-medium);
  transition: all var(--mm-dur-short3) var(--mm-ease-standard);
  box-shadow: var(--mm-shadow-xs);
  width: 100%;
}

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

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

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

.search-section {
  background: var(--mm-surface);
  padding: var(--mm-sp-4) 0;
  box-shadow: var(--mm-shadow-xs);
}

.search-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--mm-sp-4);
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--mm-bg);
  border-radius: var(--mm-radius-lg);
  padding: var(--mm-sp-2) var(--mm-sp-4);
  transition: box-shadow var(--mm-dur-short3) var(--mm-ease-standard);
}

.search-input-wrapper:focus-within {
  box-shadow: 0 0 0 2px rgb(var(--mm-primary-rgb) / 0.30);
}

/* 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 rgb(var(--mm-primary-rgb) / 0.30);
  }
}

.search-icon {
  color: var(--mm-text-secondary);
  margin-right: var(--mm-sp-2);
}

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

/* Keyboard shortcut hint */
.search-input-wrapper::after {
  content: 'Ctrl+K';
  display: none;
  font-size: var(--mm-fs-xs);
  color: var(--mm-text-tertiary);
  padding: 2px 6px;
  border: 1px solid var(--mm-border);
  border-radius: var(--mm-radius-xs);
  background: var(--mm-surface);
  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(--mm-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--mm-dur-short3) var(--mm-ease-standard);
}

.search-clear:hover {
  background: rgb(var(--mm-shadow-rgb) / 0.04);
}

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

/* Search results message */
.search-results-message {
  display: none;
  align-items: center;
  gap: var(--mm-sp-2);
  padding: var(--mm-sp-4);
  background: rgb(var(--mm-primary-rgb) / 0.10);
  border-left: 3px solid var(--mm-brand-functional);
  border-radius: var(--mm-radius-md);
  margin: var(--mm-sp-4) 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(--mm-brand-functional);
  font-size: 20px;
}

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

/* Search highlight in results */
.search-highlight {
  background: var(--secondary-color);
  color: var(--secondary-contrast);
  padding: 2px 4px;
  border-radius: var(--mm-radius-xs);
  font-weight: var(--mm-fw-semibold);
  transition: background var(--mm-dur-short3) var(--mm-ease-standard);
}

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

/* Search suggestions dropdown */
.search-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--mm-surface);
  border-radius: var(--mm-radius-lg);
  box-shadow: var(--mm-shadow-lg);
  margin-top: var(--mm-sp-1);
  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(--mm-sp-2) var(--mm-sp-4);
  border-bottom: 1px solid var(--mm-border);
  font-size: var(--mm-fs-sm);
  font-weight: var(--mm-fw-semibold);
  color: var(--mm-text-secondary);
}

.suggestions-clear {
  width: 44px;
  height: 44px;
  border-radius: var(--mm-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--mm-dur-short3) var(--mm-ease-standard);
}

.suggestions-clear:hover {
  background: rgb(var(--mm-shadow-rgb) / 0.04);
}

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

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

.suggestion-item button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--mm-sp-2);
  padding: var(--mm-sp-2) var(--mm-sp-4);
  text-align: left;
  transition: background var(--mm-dur-short3) var(--mm-ease-standard);
  color: var(--mm-text);
}

.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(--mm-text-secondary);
}

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

/* Group that sticks, containing optional banner, categories, and toolbar */
.sticky-header-group {
  position: sticky;
  top: 76px; /* Fallback; JS syncStickyOffset() measures actual header height */
  background: var(--mm-surface);
  z-index: calc(var(--z-sticky) - 1);
}

/* ── Ordering disabled banner (token-based) ─────────────────────────────── */
.sticky-banner {
  display: flex;
  align-items: center;
  gap: var(--mm-sp-2);
  padding: var(--mm-sp-3) var(--mm-sp-4);
  background: rgb(var(--mm-primary-rgb) / 0.08);
  border-bottom: 1px solid rgb(var(--mm-primary-rgb) / 0.20);
  color: var(--mm-text);
  font-size: var(--mm-fs-sm);
  max-width: 1200px;
  margin: 0 auto;
}

.sticky-banner .material-icons {
  font-size: 20px;
  color: var(--mm-brand-functional);
  flex-shrink: 0;
}

.categories-nav {
  position: relative; /* Reset from sticky */
  background: var(--mm-surface);
  border-bottom: 1px solid var(--mm-border);
  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(--mm-dur-medium1) var(--mm-ease-standard);
}

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

.categories-nav::after {
  right: 0;
  background: linear-gradient(to left, var(--mm-surface) 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(--mm-sp-4);
  min-width: min-content;
  position: relative;
}

/* Sliding indicator — brand-kit tab pattern */
.category-indicator {
  position: absolute;
  bottom: 0;
  height: 3px;
  background: var(--mm-brand-functional);
  border-radius: 3px 3px 0 0;
  transition: left var(--mm-dur-medium1) var(--mm-ease-standard),
              width var(--mm-dur-medium1) var(--mm-ease-standard);
  pointer-events: none;
}

.category-tab {
  padding: var(--mm-sp-3) var(--mm-sp-5);
  color: var(--mm-text-secondary);
  font-weight: var(--mm-fw-medium);
  white-space: nowrap;
  transition: color var(--mm-dur-short3) var(--mm-ease-standard),
              background var(--mm-dur-short3) var(--mm-ease-standard);
  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(--mm-sp-1);
  position: relative;
  /* Staggered reveal when replacing skeleton pills */
  animation: mm-mot-stagger-in var(--mm-dur-medium1) var(--mm-ease-emphasized-decelerate) both;
}

.category-tab:nth-child(1) { animation-delay: 0ms; }
.category-tab:nth-child(2) { animation-delay: var(--mm-dur-short1); }
.category-tab:nth-child(3) { animation-delay: var(--mm-dur-short2); }
.category-tab:nth-child(4) { animation-delay: var(--mm-dur-short3); }
.category-tab:nth-child(5) { animation-delay: var(--mm-dur-short4); }
.category-tab:nth-child(n+6) { animation-delay: var(--mm-dur-medium1); }

/* Category icon/emoji styling */
.category-icon {
  font-size: 1.2em;
  display: inline-block;
  transition: transform var(--mm-dur-medium1) var(--mm-ease-standard);
  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(--mm-dur-short3) var(--mm-ease-standard);
}

/* M3 state-layer hover — color tint only, no translateY */
.category-tab:hover {
  color: var(--mm-brand-functional);
  background: rgb(var(--mm-primary-rgb) / 0.08);
}

/* Active state — M3 tonal fill */
.category-tab.active {
  color: var(--mm-brand-functional);
  font-weight: var(--mm-fw-semibold);
  background: rgb(var(--mm-primary-rgb) / 0.10);
}

/* Active tab icon — subtle scale, no glow */
.category-tab.active .category-icon {
  transform: scale(1.1);
}

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

.dark-theme .icon-button:hover {
  background: rgb(var(--mm-on-dark-rgb) / 0.08);
}

.dark-theme .icon-button:active {
  background: rgb(var(--mm-on-dark-rgb) / 0.12);
}

.dark-theme .category-tab:hover {
  background: rgb(var(--mm-on-dark-rgb) / 0.08);
}

.dark-theme .search-clear:hover {
  background: rgb(var(--mm-on-dark-rgb) / 0.08);
}

.dark-theme .suggestions-clear:hover {
  background: rgb(var(--mm-on-dark-rgb) / 0.08);
}

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

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

[dir="rtl"] .search-icon {
  margin-right: 0;
  margin-left: var(--mm-sp-2);
}

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

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

/* ============================================================================
   SKELETON HEADER SHIMMER
   ============================================================================ */

.skel-header-shimmer {
  position: absolute;
  inset: 0;
  z-index: 2;
  border-radius: 0;
  transition: opacity var(--mm-dur-medium2) var(--mm-ease-standard-decelerate);
}

.menu-loaded .skel-header-shimmer {
  opacity: 0;
  pointer-events: none;
}

/* ============================================================================
   SKELETON CATEGORY PILLS
   ============================================================================ */

.skel-cat-pill {
  display: inline-block;
  width: 80px;
  height: 48px;
  border-radius: var(--mm-radius-md);
  flex-shrink: 0;
}

.skel-cat-pill:nth-child(3) { width: 100px; }
.skel-cat-pill:nth-child(5) { width: 65px; }

.menu-loaded .skel-cat-pill {
  display: none !important;
}

/* ============================================================================
   SKELETON STICKY HEADER SHIMMER
   ============================================================================ */

.skel-sticky-header {
  position: absolute;
  inset: 0;
  z-index: 2;
  border-radius: 0;
  overflow: hidden;
  transition: opacity var(--mm-dur-medium2) var(--mm-ease-standard-decelerate);
}

/* ============================================================================
   STICKY TOOLBAR (Filters + View Toggle merged row)
   ============================================================================ */

.sticky-toolbar {
  display: flex;
  align-items: center;
  background: var(--mm-surface-container, var(--mm-bg));
  padding: var(--mm-sp-2) max(var(--mm-sp-4), calc((100% - 1200px) / 2 + var(--mm-sp-4)));
  gap: var(--mm-sp-2);
}

.sticky-toolbar .filters-section {
  flex: 1;
  min-width: 0;
  padding: 0;
}

.sticky-toolbar .view-toggle {
  flex-shrink: 0;
  margin-left: auto;
}

.menu-loaded .skel-sticky-header {
  opacity: 0;
  pointer-events: none;
}

/* ============================================================================
   REDUCED MOTION
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
  .category-tab {
    animation: none;
  }
}

/* ============================================================================
   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-indicator {
    background: Highlight;
  }

  .category-tab.active {
    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;
  }

  .sticky-banner {
    border-bottom: 1px solid ButtonText;
  }

  .categories-nav {
    border-bottom: 1px solid ButtonText;
  }

  .sticky-toolbar {
    border-bottom: 1px solid ButtonText;
  }
}