/* ==========================================================================
   BEYOĞLU TEKNOLOJİ — HEADER v3 (Shop-Inspired)
   Topbar → Main Header → Category Nav
   Namespace: .bt-header-*, .bt-topbar-*, .bt-nav-*, .bt-mega-*
   ========================================================================== */

/* ── 1. TOPBAR ─────────────────────────────────────────────────────────── */
.bt-header-topbar {
  background: var(--bt-dark);
  color: #94a3b8;
  font-size: 0.76rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  position: relative;
  z-index: 990;
}

.bt-topbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: nowrap;
}

.bt-topbar-links {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  flex-shrink: 0;
}

.bt-topbar-link {
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.74rem;
  font-weight: 500;
  transition: color var(--bt-transition-fast);
  white-space: nowrap;
}
.bt-topbar-link:hover { color: #ffffff; }

.bt-topbar-sep { color: rgba(255,255,255,0.18); font-size: 0.65rem; }

/* Live exchange rates pill */
.bt-topbar-rates {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 0.15rem 0.55rem;
  border-radius: var(--bt-radius-pill);
  font-size: 0.72rem;
  white-space: nowrap;
  cursor: default;
  transition: background var(--bt-transition-fast);
}
.bt-topbar-rates:hover { background: rgba(255,255,255,0.09); }

.bt-rate-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: #64748b;
  font-size: 0.7rem;
  font-weight: 600;
}

.bt-rate-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 5px rgba(34,197,94,0.6);
  animation: btRatePulse 2.5s ease-in-out infinite;
}

@keyframes btRatePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.8); }
}

.bt-rate-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.08rem 0.4rem;
  border-radius: 4px;
  background: rgba(255,255,255,0.07);
}

.bt-rate-curr { font-weight: 700; font-size: 0.69rem; }
.bt-rate-usd .bt-rate-curr { color: #38bdf8; }
.bt-rate-eur .bt-rate-curr { color: #fbbf24; }
.bt-rate-val  { color: #f1f5f9; font-weight: 700; letter-spacing: -0.01em; }

.bt-topbar-contact {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  flex-shrink: 0;
}

.bt-topbar-phone,
.bt-topbar-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.74rem;
  font-weight: 600;
  transition: color var(--bt-transition-fast);
  white-space: nowrap;
}
.bt-topbar-phone:hover   { color: #ffffff; }
.bt-topbar-whatsapp:hover { color: #4ade80; }

/* ── 2. ANNOUNCEMENT BAR ────────────────────────────────────────────────── */
.bt-header-announcement {
  background: var(--bt-primary);
  color: #ffffff;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.45rem 1rem;
  position: relative;
  letter-spacing: 0.01em;
}

.bt-header-announcement-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  position: relative;
}

.bt-header-announcement-badge {
  background: rgba(255,255,255,0.22);
  color: #ffffff;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 1px 7px;
  border-radius: var(--bt-radius-xs);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.bt-header-announcement-close {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: rgba(255,255,255,0.7);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0.15rem 0.35rem;
  line-height: 1;
  transition: color var(--bt-transition-fast);
  font-family: inherit;
}
.bt-header-announcement-close:hover { color: #ffffff; }

/* ── 3. MAIN HEADER ─────────────────────────────────────────────────────── */
.bt-header-main {
  background: var(--bt-surface);
  border-bottom: 1px solid var(--bt-border);
  position: sticky;
  top: 0;
  z-index: 980;
  transition: box-shadow var(--bt-transition-base);
}

.bt-header-main.bt-sticky-active {
  box-shadow: var(--bt-shadow-md);
}

.bt-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--bt-space-4, 1.25rem);
  padding: 0.75rem 0;
  min-height: var(--bt-header-height, 76px);
}

/* Logo */
.bt-header-logo-wrap {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.bt-header-logo {
  display: block;
  text-decoration: none;
  flex-shrink: 0;
}

.bt-header-logo img {
  height: var(--bt-logo-height, 58px);
  width: auto;
  max-width: 260px;
  object-fit: contain;
  display: block;
  transition: opacity var(--bt-transition-fast), height var(--bt-transition-fast);
}
.bt-header-logo:hover img { opacity: 0.85; }

.bt-header-main.bt-sticky-active .bt-header-logo img {
  height: var(--bt-logo-height-sticky, 44px);
}

/* Search — full width, pill, prominent */
.bt-header-search-wrap {
  flex: 1;
  min-width: 0;
  max-width: 720px;
  position: relative;
  margin: 0 1.25rem;
}

.bt-header-search-form {
  display: flex;
  align-items: center;
  background: var(--bt-surface);
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius-pill);
  overflow: hidden;
  transition: border-color var(--bt-transition-fast),
              box-shadow var(--bt-transition-fast),
              background var(--bt-transition-fast);
  height: 50px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.02);
}

.bt-header-search-form:focus-within {
  border-color: var(--bt-primary);
  box-shadow: 0 0 0 3px rgba(200,16,46,0.08);
  background: var(--bt-surface);
}

.bt-header-search-input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  outline: none;
  font-family: var(--bt-font-sans);
  font-size: var(--bt-text-base);
  color: var(--bt-text);
  padding: 0 1rem 0 1.25rem;
  height: 100%;
  min-height: 44px; /* iOS zoom prevention */
  font-weight: 400;
}

.bt-header-search-input::placeholder {
  color: var(--bt-muted);
}

.bt-header-search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--bt-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--bt-radius-pill);
  margin: 4px 5px;
  height: 40px;
  padding: 0 1.25rem;
  font-size: var(--bt-text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--bt-transition-fast), transform 0.15s ease;
  white-space: nowrap;
  letter-spacing: -0.01em;
}

.bt-header-search-btn:hover {
  background: var(--bt-primary-hover);
  transform: translateY(-1px);
}
.bt-header-search-btn:active {
  transform: scale(0.98);
}

/* Search results dropdown */
.search-results-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--bt-surface);
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius-lg);
  box-shadow: var(--bt-shadow-dropdown);
  z-index: 1000;
  max-height: 420px;
  overflow-y: auto;
  display: none;
  overscroll-behavior: contain;
}

.search-results-dropdown.active {
  display: block;
  animation: fadeInDown 0.15s ease;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Autocomplete Search Dropdown Items & Keyboard Navigation */
.search-results-section {
  border-bottom: 1px solid var(--bt-border-light, #f1f5f9);
}
.search-results-section:last-of-type {
  border-bottom: none;
}
.search-section-header {
  padding: 0.5rem 1.15rem;
  background-color: var(--bt-canvas, #f8fafc);
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--bt-text-secondary, #475569);
  letter-spacing: 0.5px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--bt-border-light, #f1f5f9);
}
.search-section-header .count-badge {
  background-color: #fdeded;
  color: var(--bt-primary, #d12131);
  font-size: 0.68rem;
  padding: 0.1rem 0.45rem;
  border-radius: var(--bt-radius-pill, 999px);
  font-weight: 700;
}
.search-group-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1.15rem;
  text-decoration: none;
  color: var(--bt-text, #1e293b);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.15s ease;
  border-left: 3px solid transparent;
}
.search-group-item:hover,
.search-group-item.keyboard-selected {
  background-color: #fdf2f3;
  border-left-color: var(--bt-primary, #d12131);
  color: var(--bt-primary, #d12131);
}
.search-group-label { flex: 1; }
.search-group-hint { font-size: 0.725rem; color: #94a3b8; font-weight: 500; }

.search-res-item {
  display: flex;
  align-items: center;
  padding: 0.65rem 1.15rem;
  gap: 0.85rem;
  border-bottom: 1px solid var(--bt-border-light, #f1f5f9);
  text-decoration: none;
  transition: background-color 0.15s ease, border-left-color 0.15s ease;
  cursor: pointer;
  border-left: 3px solid transparent;
}
.search-res-item:hover,
.search-res-item.keyboard-selected {
  background-color: #fdf2f3;
  border-left-color: var(--bt-primary, #d12131);
}
.search-res-item:last-child { border-bottom: none; }
.search-res-thumb {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: var(--bt-radius-xs, 4px);
  border: 1px solid var(--bt-border, #e2e8f0);
  background-color: #ffffff;
  flex-shrink: 0;
  padding: 2px;
}
.search-res-info { flex: 1; min-width: 0; }
.search-res-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--bt-text, #1e293b);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.search-res-cat {
  font-size: 0.725rem;
  color: var(--bt-muted, #64748b);
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.search-res-cat .stock-pill {
  color: #16a34a;
  background-color: #dcfce7;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
}
.search-res-price {
  font-weight: 800;
  color: var(--bt-primary, #d12131);
  font-size: 0.95rem;
  white-space: nowrap;
  text-align: right;
  letter-spacing: -0.01em;
}
.search-highlight {
  background-color: #fef08a;
  color: #854d0e;
  font-weight: 700;
  padding: 0 2px;
  border-radius: 2px;
}

.search-dropdown-footer {
  padding: 0.65rem 1.15rem;
  background-color: var(--bt-canvas, #f8fafc);
  border-top: 1px solid var(--bt-border, #e2e8f0);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  gap: 1rem;
}
.search-shortcut-hint { color: #64748b; font-size: 0.72rem; }
.search-all-link {
  font-weight: 700;
  color: var(--bt-primary, #d12131);
  text-decoration: none;
  font-size: 0.8rem;
  white-space: nowrap;
}
.search-all-link:hover { text-decoration: underline; }

/* Popular chips & Zero results inside dropdown */
.search-chips-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0.75rem 1rem;
}
.search-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--bt-canvas, #f8fafc);
  border: 1px solid var(--bt-border, #e2e8f0);
  border-radius: var(--bt-radius-pill, 999px);
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--bt-text-secondary, #475569);
  cursor: pointer;
  transition: all var(--bt-transition-fast, 0.15s ease);
}
.search-chip:hover {
  background-color: #fdeded;
  color: var(--bt-primary, #d12131);
  border-color: rgba(209, 33, 49, 0.3);
  transform: translateY(-1px);
}
.search-no-results-box {
  padding: 1.5rem 1.25rem;
  text-align: center;
}
.search-no-results-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: #fdeded;
  color: var(--bt-primary, #d12131);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.75rem;
}
.search-no-results-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #1a1f2e;
  margin-bottom: 0.35rem;
}
.search-no-results-desc {
  font-size: 0.8rem;
  color: #64748b;
  margin-bottom: 0.75rem;
}
.search-no-results-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
}
.search-action-btn {
  font-size: 0.775rem;
  font-weight: 700;
  padding: 0.45rem 0.95rem;
  border-radius: var(--bt-radius-sm, 6px);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
}
.search-action-btn.btn-all-products {
  background-color: var(--bt-primary, #d12131);
  color: #ffffff;
}
.search-action-btn.btn-all-products:hover { background-color: #b81423; }
.search-action-btn.btn-support {
  background-color: #25d366;
  color: #ffffff;
}
.search-action-btn.btn-support:hover { background-color: #1eb855; }

/* Right actions */
.bt-header-actions {
  display: flex;
  align-items: center;
  gap: var(--bt-space-2, 0.75rem);
  flex-shrink: 0;
  margin-left: auto;
}

.bt-header-action-item {
  position: relative;
}

.bt-header-action-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.5rem;
  border-radius: var(--bt-radius-md);
  text-decoration: none;
  color: var(--bt-text);
  transition: background var(--bt-transition-fast), color var(--bt-transition-fast);
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  justify-content: center;
}

.bt-header-action-link:hover {
  background: var(--bt-surface-subtle);
  color: var(--bt-text);
}

.bt-header-action-icon {
  position: relative;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.bt-header-badge-count {
  position: absolute;
  top: -5px;
  right: -7px;
  min-width: 17px;
  height: 17px;
  background: var(--bt-primary);
  color: #ffffff;
  font-size: 0.625rem;
  font-weight: 800;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 3px;
  border: 1.5px solid var(--bt-surface);
  line-height: 1;
}

/* User dropdown */
.has-dropdown .user-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bt-surface);
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius-lg);
  box-shadow: var(--bt-shadow-dropdown);
  min-width: 200px;
  z-index: 999;
  padding: 6px;
  animation: fadeInDown 0.15s ease;
}

.has-dropdown:hover .user-dropdown-menu {
  display: block;
}

.user-dropdown-link {
  display: block;
  padding: 0.55rem 0.875rem;
  font-size: var(--bt-text-sm);
  color: var(--bt-text-secondary);
  text-decoration: none;
  border-radius: var(--bt-radius-sm);
  font-weight: 500;
  transition: background var(--bt-transition-fast), color var(--bt-transition-fast);
}

.user-dropdown-link:hover {
  background: var(--bt-surface-subtle);
  color: var(--bt-text);
}

/* Cart icon */
.bt-cart-icon-wrap {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0.5rem 0.875rem;
  border-radius: var(--bt-radius-pill);
  border: 1.5px solid var(--bt-border);
  text-decoration: none;
  color: var(--bt-text);
  transition: all var(--bt-transition-fast);
  cursor: pointer;
  font-weight: 600;
  font-size: var(--bt-text-sm);
}

.bt-cart-icon-wrap:hover {
  border-color: var(--bt-primary);
  color: var(--bt-primary);
  background: var(--bt-primary-light);
}

/* Mobile hamburger */
.bt-mobile-menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--bt-border);
  border-radius: var(--bt-radius-md);
  background: transparent;
  color: var(--bt-text);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--bt-transition-fast);
  flex-shrink: 0;
}

.bt-mobile-menu-btn:hover {
  border-color: var(--bt-primary);
  color: var(--bt-primary);
}

@media (max-width: 768px) {
  .bt-mobile-menu-btn { display: flex; }
}

/* ── 4. CATEGORY NAV ─────────────────────────────────────────────────────── */
.bt-header-nav {
  background: var(--bt-surface);
  border-bottom: 1px solid var(--bt-border);
  position: relative;
  z-index: 970;
}

.bt-nav-row {
  display: flex;
  align-items: center;
  gap: 0;
  height: var(--bt-nav-height);
  overflow: hidden;
}

.bt-nav-item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.bt-nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0 0.9rem;
  height: 100%;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--bt-text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--bt-transition-fast);
  border-bottom: 2px solid transparent;
  letter-spacing: -0.01em;
}

.bt-nav-link:hover {
  color: var(--bt-text);
  border-bottom-color: var(--bt-border-strong);
}

.bt-nav-item:hover > .bt-nav-link,
.bt-nav-item.active > .bt-nav-link {
  color: var(--bt-primary);
  border-bottom-color: var(--bt-primary);
}

/* "Tüm Ürünler" button — distinct */
.bt-nav-all-products {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 1rem;
  height: calc(100% - 10px);
  margin: 5px 0.5rem 5px 0;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--bt-on-dark);
  text-decoration: none;
  background: var(--bt-dark-2);
  border-radius: var(--bt-radius-md);
  border-bottom: none;
  letter-spacing: -0.01em;
  transition: background var(--bt-transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
  cursor: pointer;
  border: none;
  font-family: var(--bt-font-sans);
}

.bt-nav-all-products:hover {
  background: var(--bt-dark);
  color: #ffffff;
}

/* ── 5. MEGA MENU ────────────────────────────────────────────────────────── */
.bt-mega-wrapper {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bt-surface);
  border: 1px solid var(--bt-border);
  border-top: none;
  border-radius: 0 0 var(--bt-radius-lg) var(--bt-radius-lg);
  box-shadow: var(--bt-shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.18s ease, visibility 0.18s ease, transform 0.18s ease;
  z-index: 960;
  pointer-events: none;
}

.bt-nav-item:hover .bt-mega-wrapper,
.bt-mega-wrapper:hover {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

/* Full mega menu (Tüm Ürünler) */
.bt-mega-full {
  position: fixed;
  top: auto;
  left: 0;
  right: 0;
  max-height: 70vh;
  overflow-y: auto;
}

.bt-mega-inner {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 360px;
  max-height: 70vh;
}

.bt-mega-sidebar {
  background: var(--bt-canvas);
  border-right: 1px solid var(--bt-border);
  padding: var(--bt-space-3) 0;
  overflow-y: auto;
}

.bt-mega-sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0.65rem 1.25rem;
  font-size: var(--bt-text-sm);
  font-weight: 600;
  color: var(--bt-text-secondary);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--bt-transition-fast);
  border-right: 2px solid transparent;
  letter-spacing: -0.01em;
}

.bt-mega-sidebar-item:hover,
.bt-mega-sidebar-item.active {
  background: var(--bt-surface);
  color: var(--bt-primary);
  border-right-color: var(--bt-primary);
}

.bt-mega-sidebar-icon {
  width: 20px;
  height: 20px;
  opacity: 0.65;
  flex-shrink: 0;
}

.bt-mega-content {
  padding: var(--bt-space-5);
  overflow-y: auto;
}

.bt-mega-section-title {
  font-size: 0.6875rem;
  font-weight: 800;
  color: var(--bt-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 var(--bt-space-3) 0;
}

.bt-mega-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px var(--bt-space-3);
  margin-bottom: var(--bt-space-5);
}

.bt-mega-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.45rem 0.5rem;
  font-size: var(--bt-text-sm);
  color: var(--bt-text-secondary);
  text-decoration: none;
  border-radius: var(--bt-radius-sm);
  transition: all var(--bt-transition-fast);
  font-weight: 500;
}

.bt-mega-link:hover {
  background: var(--bt-surface-subtle);
  color: var(--bt-primary);
}

/* Simple dropdown (single-level) */
.bt-nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--bt-surface);
  border: 1px solid var(--bt-border);
  border-radius: 0 var(--bt-radius-lg) var(--bt-radius-lg) var(--bt-radius-lg);
  box-shadow: var(--bt-shadow-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all 0.15s ease;
  z-index: 960;
  padding: 6px;
}

.bt-nav-item:hover .bt-nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.bt-nav-dropdown-link {
  display: block;
  padding: 0.5rem 0.85rem;
  font-size: var(--bt-text-sm);
  color: var(--bt-text-secondary);
  text-decoration: none;
  border-radius: var(--bt-radius-sm);
  font-weight: 500;
  transition: all var(--bt-transition-fast);
}

.bt-nav-dropdown-link:hover {
  background: var(--bt-surface-subtle);
  color: var(--bt-primary);
}

/* ── 6. MOBILE NAV DRAWER ────────────────────────────────────────────────── */
.bt-mobile-nav-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: min(360px, 90vw);
  height: 100%;
  background: var(--bt-surface);
  z-index: 1100;
  box-shadow: var(--bt-shadow-lg);
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.bt-mobile-nav-drawer.open {
  transform: translateX(0);
}

.bt-mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1099;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.bt-mobile-nav-overlay.open {
  opacity: 1;
  visibility: visible;
}

.bt-mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--bt-border);
  flex-shrink: 0;
}

.bt-mobile-nav-close {
  width: 36px;
  height: 36px;
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius-md);
  background: transparent;
  color: var(--bt-text);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  font-family: inherit;
  transition: all var(--bt-transition-fast);
}
.bt-mobile-nav-close:hover { background: var(--bt-surface-subtle); }

.bt-mobile-nav-search {
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid var(--bt-border);
  flex-shrink: 0;
}

.bt-mobile-nav-search input {
  width: 100%;
  height: 44px;
  background: var(--bt-canvas);
  border: 1.5px solid var(--bt-border);
  border-radius: var(--bt-radius-pill);
  padding: 0 1rem;
  font-size: 16px;
  font-family: var(--bt-font-sans);
  color: var(--bt-text);
  outline: none;
}
.bt-mobile-nav-search input:focus {
  border-color: var(--bt-primary);
}

.bt-mobile-nav-body {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem 0;
}

.bt-mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.25rem;
  font-size: var(--bt-text-base);
  font-weight: 600;
  color: var(--bt-text);
  text-decoration: none;
  border-bottom: 1px solid var(--bt-border-light);
  transition: color var(--bt-transition-fast);
  letter-spacing: -0.01em;
}
.bt-mobile-nav-link:hover { color: var(--bt-primary); }

.bt-mobile-nav-sub-link {
  display: block;
  padding: 0.6rem 1.75rem;
  font-size: var(--bt-text-sm);
  font-weight: 500;
  color: var(--bt-text-secondary);
  text-decoration: none;
  transition: color var(--bt-transition-fast);
}
.bt-mobile-nav-sub-link:hover { color: var(--bt-primary); }

/* ── 7. RESPONSIVE ───────────────────────────────────────────────────────── */
@media (max-width: 1200px) {
  .bt-header-search-wrap { max-width: 520px; }
}

@media (max-width: 1024px) {
  .bt-header-nav { display: none; }
  .bt-header-search-wrap { max-width: 420px; }
}

@media (max-width: 991px) {
  .bt-header-topbar,
  .bt-header-main,
  .bt-header-nav-bar {
    display: none !important;
  }
}

/* ── 8. NAV BAR (Desktop) ────────────────────────────────────────────────── */
.bt-header-nav-bar {
  background: var(--bt-surface);
  border-bottom: 1px solid var(--bt-border);
  position: relative;
  z-index: 1010;
}

.bt-nav-container {
  display: flex;
  align-items: center;
  height: 46px;
  gap: 0;
  overflow: visible;
  position: relative;
}

/* Tüm Ürünler trigger button */
.bt-all-categories-wrap {
  position: relative;
  flex-shrink: 0;
  z-index: 1012;
}
.bt-all-categories-wrap.active {
  z-index: 1020;
}

.btn-all-categories-trigger {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 1rem;
  height: 34px;
  margin: 6px 0.75rem 6px 0;
  font-family: var(--bt-font-sans);
  font-size: 0.8125rem;
  font-weight: 700;
  color: #ffffff;
  background: var(--bt-dark-2);
  border: none;
  border-radius: var(--bt-radius-md);
  cursor: pointer;
  transition: background var(--bt-transition-fast);
  white-space: nowrap;
  letter-spacing: -0.01em;
  user-select: none;
}
.btn-all-categories-trigger:hover { background: var(--bt-dark); }

.trigger-chevron {
  transition: transform var(--bt-transition-fast);
}
.bt-all-categories-wrap.active .trigger-chevron { transform: rotate(180deg); }

/* Dropdown panel */
.bt-all-categories-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 420px;
  max-height: 75vh;
  width: max(780px, 68vw);
  max-width: 1080px;
  background: #ffffff !important;
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius-lg);
  box-shadow: 0 20px 40px -8px rgba(0, 0, 0, 0.22), 0 0 0 1px rgba(0, 0, 0, 0.06);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 0.18s ease, visibility 0.18s ease, transform 0.18s ease;
  z-index: 1025;
  overflow: hidden;
}
.bt-all-categories-wrap.active .bt-all-categories-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

/* Left sidebar categories list */
.all-cats-nav-col {
  background: #f8fafc !important;
  border-right: 1px solid var(--bt-border);
  overflow-y: auto;
  padding: var(--bt-space-2) 0;
}
  overflow-y: auto;
  padding: var(--bt-space-2) 0;
}

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

.all-cat-item {
  display: block;
}

.all-cat-link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0.6rem 1rem;
  font-size: var(--bt-text-sm);
  font-weight: 600;
  color: var(--bt-text-secondary);
  text-decoration: none;
  cursor: pointer;
  border-right: 2px solid transparent;
  transition: all var(--bt-transition-fast);
  letter-spacing: -0.01em;
}

.all-cat-link:hover,
.all-cat-item.active .all-cat-link {
  background: var(--bt-surface);
  color: var(--bt-primary);
  border-right-color: var(--bt-primary);
}

.all-cat-icon {
  width: 18px;
  height: 18px;
  opacity: 0.6;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.all-cat-icon svg { width: 18px; height: 18px; }

.all-cat-name { flex: 1; }

.all-cat-count {
  font-size: 0.6875rem;
  color: var(--bt-muted);
  background: var(--bt-surface);
  padding: 1px 5px;
  border-radius: var(--bt-radius-pill);
  border: 1px solid var(--bt-border);
  font-weight: 600;
}

.all-cat-arrow {
  width: 14px;
  height: 14px;
  opacity: 0.4;
  flex-shrink: 0;
  stroke-width: 2;
}

/* Right sub-panel */
.all-cats-sub-col {
  overflow-y: auto;
  padding: var(--bt-space-4);
  background: #ffffff !important;
}

.all-cat-sub-panel {
  display: none;
}
.all-cat-sub-panel.active { display: block; }

.sub-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--bt-space-4);
  padding-bottom: var(--bt-space-3);
  border-bottom: 1px solid var(--bt-border);
}

.sub-panel-title {
  font-size: var(--bt-text-base);
  font-weight: 800;
  color: var(--bt-text);
  margin: 0;
  letter-spacing: -0.02em;
}
.sub-panel-title a { color: inherit; text-decoration: none; }
.sub-panel-title a:hover { color: var(--bt-primary); }

.sub-panel-view-all {
  font-size: var(--bt-text-xs);
  font-weight: 700;
  color: var(--bt-primary);
  text-decoration: none;
  white-space: nowrap;
}
.sub-panel-view-all:hover { text-decoration: underline; }

.sub-panel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--bt-space-4);
}

.sub-group-block { }

.sub-group-title {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: var(--bt-text-sm);
  font-weight: 700;
  color: var(--bt-text);
  text-decoration: none;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.sub-group-title:hover { color: var(--bt-primary); }

.sub-group-count {
  font-size: var(--bt-text-xs);
  color: var(--bt-muted);
  font-weight: 500;
}

.sub-leaf-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.sub-leaf-link {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: var(--bt-text-xs);
  color: var(--bt-text-secondary);
  text-decoration: none;
  padding: 2px 0;
  font-weight: 500;
  transition: color var(--bt-transition-fast);
}
.sub-leaf-link:hover { color: var(--bt-primary); }

/* Mega overlay */
.bt-mega-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}
.bt-mega-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* Nav list */
.bt-nav-list {
  display: flex;
  align-items: center;
  flex: 1;
  flex-wrap: nowrap;
  overflow: visible;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0;
  height: 100%;
}

.bt-nav-item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.bt-nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 0.75rem;
  height: 100%;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--bt-text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--bt-transition-fast), background var(--bt-transition-fast);
  border-bottom: 2px solid transparent;
  letter-spacing: -0.01em;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  cursor: pointer;
  font-family: var(--bt-font-sans);
  border-radius: 0;
}

.bt-nav-link:hover,
.bt-nav-item:hover > .bt-nav-link,
.bt-nav-item.active > .bt-nav-link {
  color: var(--bt-primary);
  border-bottom-color: var(--bt-primary);
  background: var(--bt-primary-light);
}

.bt-nav-arrow {
  width: 12px;
  height: 12px;
  stroke-width: 2.5;
  opacity: 0.5;
}

.nav-badge-pill {
  font-size: 0.6rem;
  font-weight: 800;
  padding: 1px 5px;
  border-radius: var(--bt-radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Right CTA */
.bt-nav-right-cta {
  margin-left: auto;
  flex-shrink: 0;
}
@media (max-width: 1200px) {
  .bt-nav-right-cta {
    display: none !important;
  }
}

.bt-nav-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: var(--bt-text-xs);
  font-weight: 700;
  color: var(--bt-primary);
  text-decoration: none;
  background: var(--bt-primary-light);
  border: 1px solid var(--bt-primary-border);
  border-radius: var(--bt-radius-md);
  padding: 0.3rem 0.75rem;
  white-space: nowrap;
  transition: all var(--bt-transition-fast);
}
.bt-nav-cta-btn:hover {
  background: var(--bt-primary);
  color: #ffffff;
  border-color: var(--bt-primary);
}

/* ── 9. MINI CART DROPDOWN ────────────────────────────────────────────────── */
.bt-mini-cart-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 340px;
  background: var(--bt-surface);
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius-lg);
  box-shadow: var(--bt-shadow-dropdown);
  z-index: 999;
  display: none;
  overflow: hidden;
}
.has-dropdown:hover .bt-mini-cart-dropdown {
  display: block;
  animation: fadeInDown 0.15s ease;
}

.bt-mini-cart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--bt-border);
}

.bt-mini-cart-title {
  font-size: var(--bt-text-sm);
  font-weight: 700;
  color: var(--bt-text);
  letter-spacing: -0.01em;
}

.bt-mini-cart-count {
  font-size: var(--bt-text-xs);
  color: var(--bt-muted);
  background: var(--bt-canvas);
  padding: 2px 7px;
  border-radius: var(--bt-radius-pill);
  border: 1px solid var(--bt-border);
  font-weight: 600;
}

.bt-mini-cart-empty {
  padding: 2rem 1rem;
  text-align: center;
}

.bt-mini-cart-empty-icon {
  font-size: 2rem;
  color: var(--bt-faint);
  margin-bottom: 0.5rem;
}

.bt-mini-cart-empty-text {
  font-size: var(--bt-text-sm);
  font-weight: 700;
  color: var(--bt-text);
  margin-bottom: 0.25rem;
}

.bt-mini-cart-empty-sub {
  font-size: var(--bt-text-xs);
  color: var(--bt-muted);
  line-height: 1.5;
}

.bt-mini-cart-items {
  max-height: 260px;
  overflow-y: auto;
  padding: 0.5rem 0;
}

.bt-mini-cart-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 1rem;
  border-bottom: 1px solid var(--bt-border-light);
}

.bt-mini-cart-item-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: var(--bt-radius-sm);
  border: 1px solid var(--bt-border);
  background: var(--bt-canvas);
  flex-shrink: 0;
}

.bt-mini-cart-item-info { flex: 1; min-width: 0; }

.bt-mini-cart-item-name {
  display: block;
  font-size: var(--bt-text-xs);
  font-weight: 600;
  color: var(--bt-text);
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
  margin-bottom: 2px;
}
.bt-mini-cart-item-name:hover { color: var(--bt-primary); }

.bt-mini-cart-item-meta {
  font-size: 0.6875rem;
  color: var(--bt-muted);
}

.bt-mini-cart-item-price {
  font-weight: 700;
  color: var(--bt-text);
}

.bt-mini-cart-footer {
  padding: 0.875rem 1rem;
  border-top: 1px solid var(--bt-border);
}

.bt-mini-cart-subtotal {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.bt-mini-cart-subtotal-label {
  font-size: var(--bt-text-sm);
  color: var(--bt-muted);
}

.bt-mini-cart-subtotal-val {
  font-size: var(--bt-text-base);
  font-weight: 800;
  color: var(--bt-text);
  letter-spacing: -0.02em;
}

.bt-mini-cart-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.bt-mini-cart-btn-cart,
.bt-mini-cart-btn-checkout {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem;
  border-radius: var(--bt-radius-md);
  font-size: var(--bt-text-xs);
  font-weight: 700;
  text-decoration: none;
  transition: all var(--bt-transition-fast);
  text-align: center;
}

.bt-mini-cart-btn-cart {
  background: var(--bt-canvas);
  border: 1.5px solid var(--bt-border);
  color: var(--bt-text);
}
.bt-mini-cart-btn-cart:hover {
  border-color: var(--bt-text);
  color: var(--bt-text);
}

.bt-mini-cart-btn-checkout {
  background: var(--bt-primary);
  border: 1.5px solid var(--bt-primary);
  color: #ffffff;
}
.bt-mini-cart-btn-checkout:hover {
  background: var(--bt-primary-hover);
  border-color: var(--bt-primary-hover);
  color: #ffffff;
}

/* ── 10. MOBILE ACCORDION ─────────────────────────────────────────────────── */
.mobile-accordion-list { }

.mobile-acc-item {
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius-md);
  margin-bottom: 0.5rem;
  background: var(--bt-surface);
  overflow: hidden;
}

.mobile-acc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  font-size: var(--bt-text-sm);
  font-weight: 600;
  color: var(--bt-text);
  cursor: pointer;
  user-select: none;
}

.mobile-acc-header .chevron {
  transition: transform var(--bt-transition-fast);
  flex-shrink: 0;
}

.mobile-acc-item.open .chevron { transform: rotate(180deg); }

.mobile-acc-content {
  display: none;
  padding: 0.5rem 0 0.75rem;
  border-top: 1px solid var(--bt-border-light);
}

.mobile-acc-item.open .mobile-acc-content { display: block; }

.mobile-acc-link {
  display: block;
  padding: 0.5rem 1rem;
  font-size: var(--bt-text-sm);
  color: var(--bt-text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--bt-transition-fast);
}
.mobile-acc-link:hover { color: var(--bt-primary); }


/* Mobile search bar */
.bt-mobile-search-bar {
  display: none;
  padding: 0.5rem var(--bt-space-4);
  background: var(--bt-surface);
  border-bottom: 1px solid var(--bt-border);
}

.bt-mobile-search-bar.open { display: flex; }
.bt-mobile-search-bar input {
  flex: 1;
  height: 44px;
  background: var(--bt-canvas);
  border: 1.5px solid var(--bt-border);
  border-radius: var(--bt-radius-pill);
  padding: 0 1rem;
  font-size: 16px;
  font-family: var(--bt-font-sans);
  color: var(--bt-text);
  outline: none;
  width: 100%;
}

/* Search toggle btn for mobile */
.bt-mobile-search-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--bt-border);
  border-radius: var(--bt-radius-md);
  background: transparent;
  color: var(--bt-text);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .bt-mobile-search-toggle { display: flex; }
}

/* Scroll-to-hide topbar on mobile */
@media (max-width: 768px) {
  .bt-header-topbar {
    display: none;
  }
}