/* ============================================
   NAVIGATION BAR - Clean Modern Header
   Inspired by modern blog/retail headers
   ============================================ */

/* Main Navbar - Clean white with subtle backdrop blur.
   The background is near-opaque so content scrolling underneath doesn't
   bleed through as visible blur/ghost artifacts (a common cause of "UI
   glitches when scrolling" reports on integrated GPUs). The very small
   translucency keeps a modern feel without the smearing. */
.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--neutral-200);
  height: 64px;
  /* Composite the navbar on its own layer so the browser can promote it
     and avoid repainting it on every scroll frame (fixes flicker/jank on
     long product lists). */
  will-change: transform;
  transform: translateZ(0);
}

/* Landing route: hide the marketing-nav links (Home/Browse/Messages/FAQ).
   The hero already provides the primary CTA, so duplicating them in the
   top nav is visual clutter. Search and account/cart actions remain so
   signed-in users can still act. The body[data-route="landing"] hook is
   set by Pages.updateNavbar() — see js/pages/pages.js. */
body[data-route='landing'] .navbar-menu,
body[data-route='landing'] .navbar-drawer-nav {
  display: none;
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
  max-width: var(--max-content-width);
  margin: 0 auto;
  height: 100%;
}

/* Brand */
.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--neutral-900);
  text-decoration: none;
  transition: opacity 0.2s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.navbar-brand:hover {
  opacity: 0.8;
  text-decoration: none;
}

.navbar-brand-icon {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: var(--radius-md);
}

/* Navigation Links - Center */
.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.navbar-link {
  color: var(--neutral-800);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: color 0.2s ease;
  position: relative;
}

.navbar-link:hover {
  color: var(--primary);
}

.navbar-link.active {
  color: var(--primary);
}

/* Right side actions */
.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

/* Search bar (always visible) */
.navbar-search-always {
  flex: 1;
  max-width: 500px;
  margin: 0 var(--space-xl);
  display: flex;
  gap: var(--space-sm);
}

.navbar-search-input {
  flex: 1;
  height: 44px;
  padding: 0 var(--space-md);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-md);
  font-size: 16px;
  background: var(--bg-primary);
  transition: all 0.15s ease;
}

.navbar-search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 70, 190, 0.1);
}

.navbar-search-btn-submit {
  height: 44px;
  padding: 0 var(--space-lg);
  background: var(--primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
}

.navbar-search-btn-submit:hover {
  background: var(--primary-hover);
}

.navbar-search-toggle {
  display: none;
  background: transparent;
  border: none;
  width: 44px;
  min-width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-full);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--neutral-800);
  transition: background 0.2s ease;
}

.navbar-search-toggle:hover {
  background: var(--neutral-100);
}

.navbar-drawer-search {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-bottom: 1px solid var(--neutral-200);
}

.navbar-drawer-search-input {
  flex: 1;
  height: 44px;
  padding: 0 var(--space-md);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-md);
  font-size: 16px;
  background: var(--bg-primary);
}

.navbar-drawer-search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 70, 190, 0.1);
}

.navbar-drawer-search-btn {
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}

.navbar-drawer-search-btn:hover {
  background: var(--primary-hover);
}

/* Right side actions */
.navbar-cart-btn {
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  width: 44px;
  min-width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease;
  color: var(--neutral-800);
  font-size: var(--text-lg);
  position: relative;
}

.navbar-cart-btn:hover {
  background: var(--neutral-100);
}

.cart-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  background: var(--primary);
  color: #ffffff;
  font-size: 10px;
  font-weight: 700;
  min-width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

/* Auth Buttons */
#navbar-auth-buttons,
#navbar-user-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

#navbar-auth-buttons .btn,
#navbar-user-menu .btn {
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  height: 38px;
}

#navbar-auth-buttons .btn-ghost {
  color: var(--neutral-800);
  background: transparent;
  border: none;
}

#navbar-auth-buttons .btn-ghost:hover {
  color: var(--primary);
  background: rgba(0, 70, 190, 0.05);
  opacity: 1;
}

#navbar-auth-buttons .btn-primary {
  background: var(--primary);
  color: #ffffff;
  border: none;
}

#navbar-auth-buttons .btn-primary:hover {
  background: var(--primary-hover);
  opacity: 1;
}

#navbar-user-menu .btn-ghost {
  color: var(--neutral-800);
  background: transparent;
  border: none;
}

#navbar-user-menu .btn-ghost:hover {
  color: var(--primary);
  background: rgba(0, 70, 190, 0.05);
  opacity: 1;
}

/* Mobile Toggle */
.navbar-mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  width: 44px;
  min-width: 44px;
  height: 44px;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease;
  color: var(--neutral-800);
  font-size: var(--text-xl);
  position: relative;
}

.navbar-mobile-toggle:hover {
  background: var(--neutral-100);
}

/* Category Navigation Bar */
.navbar-categories {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--neutral-200);
}

.navbar-categories-container {
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
  max-width: var(--max-content-width);
  margin: 0 auto;
  overflow-x: auto;
  scrollbar-width: none;
  gap: var(--space-xs);
}

.navbar-categories-container::-webkit-scrollbar {
  display: none;
}

.navbar-category-link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--neutral-800);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all 0.15s ease;
}

.navbar-category-link:hover {
  color: var(--primary);
  background: rgba(0, 70, 190, 0.05);
  text-decoration: none;
}

.navbar-category-link.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* ============================================
   MOBILE MENU - Slide-in from left
   ============================================ */

/* Overlay */
.navbar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-sticky) + 10);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.navbar-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

/* Mobile Drawer */
.navbar-drawer {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 80%;
  max-width: 320px;
  z-index: calc(var(--z-sticky) + 20);
  background: var(--bg-primary);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
}

.navbar-drawer.active {
  transform: translateX(0);
}

/* Drawer Header */
.navbar-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--neutral-200);
}

.navbar-drawer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--neutral-900);
  text-decoration: none;
}

.navbar-drawer-brand-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.navbar-drawer-close {
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease;
  color: var(--neutral-800);
  font-size: var(--text-lg);
}

.navbar-drawer-close:hover {
  background: var(--neutral-100);
}

/* Drawer Nav */
.navbar-drawer-nav {
  flex: 1;
  padding: var(--space-md) var(--space-lg);
  overflow-y: auto;
}

.navbar-drawer-link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--neutral-800);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all 0.15s ease;
  margin-bottom: var(--space-xs);
}

.navbar-drawer-link:hover {
  color: var(--primary);
  background: rgba(0, 70, 190, 0.05);
  text-decoration: none;
}

/* Drawer Footer */
.navbar-drawer-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--neutral-200);
}

.navbar-drawer-footer .btn {
  width: 100%;
  text-align: center;
  height: 44px;
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .navbar-menu {
    display: none;
  }

  .navbar-search-always {
    display: none;
    max-width: none;
    margin: 0 var(--space-xs);
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--neutral-200);
    z-index: 99;
  }

  .navbar-search-always.active {
    display: flex;
  }

  .navbar-actions .navbar-cart-btn[aria-label='View wishlist'],
  .navbar-actions .navbar-cart-btn[aria-label='View notifications'],
  .navbar-actions #dark-mode-toggle {
    display: none;
  }

  .navbar-search-toggle {
    display: flex;
  }

  .navbar-search-input {
    font-size: 16px;
  }

  .navbar-search-btn-submit {
    padding: 0 var(--space-md);
    white-space: nowrap;
  }

  #navbar-auth-buttons .btn-ghost {
    display: none;
  }

  .navbar-mobile-toggle {
    display: flex;
  }

  .navbar-container {
    padding: 0 var(--space-md);
  }

  .navbar-brand {
    font-size: var(--text-lg);
  }

  .navbar-brand-icon {
    width: 32px;
    height: 32px;
    font-size: var(--text-sm);
  }

  .navbar-actions {
    flex-shrink: 1;
    min-width: 0;
    gap: var(--space-xs);
  }

  .navbar-actions .btn,
  .navbar-actions button {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--text-xs);
    white-space: nowrap;
  }
}

@media (max-width: 480px) {
  .navbar-actions {
    gap: 4px;
  }

  .navbar-actions .btn span.btn-label {
    display: none;
  }
}

@media (min-width: 769px) {
  .navbar-overlay,
  .navbar-drawer {
    display: none !important;
  }
}

/* ============================================
SEARCH AUTOCOMPLETE DROPDOWN
============================================ */
.search-autocomplete {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border: 1px solid var(--neutral-200);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  max-height: 360px;
  overflow-y: auto;
  z-index: var(--z-dropdown, 1000);
}

.autocomplete-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  cursor: pointer;
  transition: background 0.15s ease;
  font-size: var(--text-sm);
  color: var(--neutral-800);
}

.autocomplete-item:hover {
  background: var(--neutral-50, #f9fafb);
}

.autocomplete-icon {
  color: var(--neutral-400);
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.autocomplete-thumb {
  width: 32px;
  height: 32px;
  object-fit: cover;
  border-radius: var(--radius-sm, 4px);
  flex-shrink: 0;
}

.autocomplete-text {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.autocomplete-text strong {
  color: var(--primary, #0046be);
}

.autocomplete-price {
  font-weight: var(--font-semibold, 600);
  color: var(--success, #10b981);
  white-space: nowrap;
  font-size: var(--text-xs, 12px);
}

.autocomplete-remove {
  background: none;
  border: none;
  color: var(--neutral-400);
  cursor: pointer;
  font-size: 16px;
  padding: 0 4px;
  flex-shrink: 0;
  line-height: 1;
}

.autocomplete-remove:hover {
  color: var(--danger, #ef4444);
}

@media (max-width: 768px) {
  .search-autocomplete {
    left: -10px;
    right: -10px;
    border-radius: 0;
  }
}

[data-theme='dark'] .navbar {
  background: rgba(24, 24, 27, 0.98);
}