.burger {
  width: 18px;
  height: 14px;
  display: block;
  position: relative;
}
.burger span {
  position: absolute;
  right: 0;
  left: 0;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), top 0.28s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
}
.burger span:nth-child(1) { top: 0; }
.burger span:nth-child(2) { top: 6px; }
.burger span:nth-child(3) { top: 12px; }
.menu-toggle[aria-expanded="true"] .burger span:nth-child(1) {
  top: 6px;
  transform: rotate(45deg);
}
.menu-toggle[aria-expanded="true"] .burger span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0.3);
}
.menu-toggle[aria-expanded="true"] .burger span:nth-child(3) {
  top: 6px;
  transform: rotate(-45deg);
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 998;
  background: rgba(8, 12, 20, 0.45);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.28s ease, visibility 0.28s ease;
}
body.nav-open .nav-backdrop {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

@media (max-width: 734px) {
  .nav-main {
    display: flex !important;
    flex-direction: column;
    position: fixed;
    top: var(--header, 56px);
    right: 0;
    left: 0;
    z-index: 999;
    padding: 8px 16px 20px;
    background: color-mix(in srgb, var(--as-header, #10151d) 92%, transparent);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--as-line, rgba(255,255,255,.08));
    transform: translateY(-18px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.28s ease, visibility 0.28s ease;
  }
  .nav-main.open {
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  .nav-main ul {
    flex-direction: column;
    width: 100%;
  }
  .nav-main a {
    display: block;
    padding: 12px 10px;
    transform: translateY(8px);
    opacity: 0;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease, background 0.2s ease;
  }
  .nav-main.open a {
    transform: none;
    opacity: 1;
  }
  .nav-main.open li:nth-child(1) a { transition-delay: 40ms; }
  .nav-main.open li:nth-child(2) a { transition-delay: 70ms; }
  .nav-main.open li:nth-child(3) a { transition-delay: 100ms; }
  .nav-main.open li:nth-child(4) a { transition-delay: 130ms; }
  .nav-main.open li:nth-child(5) a { transition-delay: 160ms; }
  .nav-main.open li:nth-child(6) a { transition-delay: 190ms; }
}

.header-search-panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.32s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.24s ease, padding 0.24s ease;
}
.header-search-panel.open {
  max-height: 88px;
  opacity: 1;
}

a, button, .btn, .icon-btn, .btn-add-cart, .user-chip,
input, select, textarea, .product-card, .feature-card, .post-card, .cat-card,
.pdp-thumb, .pdp-share-btn, .tab-content, .product-tabs button {
  transition:
    transform 0.24s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.24s ease,
    background-color 0.24s ease,
    border-color 0.24s ease,
    color 0.2s ease,
    opacity 0.24s ease;
}

.icon-btn:hover, .user-chip:hover, .pdp-share-btn:hover, .pdp-thumb:hover {
  transform: translateY(-1px);
}
.btn:hover, .btn-add-cart:hover, .single_add_to_cart_button:hover {
  transform: translateY(-2px);
}
.btn:active, .btn-add-cart:active, .icon-btn:active, .single_add_to_cart_button:active {
  transform: scale(0.97);
}

.product-card:hover, .feature-card:hover, .post-card:hover, .cat-card:hover {
  transform: translateY(-6px);
}

.nav-main a:hover {
  transform: translateY(-1px);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .nav-main, .nav-main a, .header-search-panel {
    transform: none !important;
    opacity: 1 !important;
  }
}