/* BTD public mobile nav hardening: premium hamburger + full-height scrollable menu on every static page. */
@media (max-width: 900px) {
  html.btd-mobile-menu-open,
  body.btd-mobile-menu-open {
    overflow: hidden !important;
    overscroll-behavior: none !important;
  }

  .nav {
    z-index: 10070 !important;
  }

  body.btd-mobile-menu-open .nav,
  html.btd-mobile-menu-open .nav,
  body:has(#nav-mobile-menu.open) .nav {
    position: fixed !important;
    inset: 0 !important;
    height: 100dvh !important;
    min-height: 100vh !important;
    overflow: hidden !important;
    background: linear-gradient(180deg, rgba(17,16,14,.98), rgba(10,9,8,.94)) !important;
    border-bottom: 1px solid rgba(232,87,74,.34) !important;
    box-shadow: 0 18px 42px rgba(0,0,0,.46), 0 1px 0 rgba(245,241,234,.05) inset !important;
  }

  .nav .wrap.nav-inner,
  .wrap.nav-inner,
  .nav-inner {
    max-width: none !important;
  }

  .nav-hamburger {
    display: flex !important;
    position: relative !important;
    align-items: center !important;
    justify-content: center !important;
    flex-direction: column !important;
    gap: 6px !important;
    width: 48px !important;
    height: 48px !important;
    min-width: 48px !important;
    border-radius: 16px !important;
    background: linear-gradient(180deg, rgba(245,241,234,.09), rgba(245,241,234,.035)) !important;
    border: 1px solid rgba(245,241,234,.13) !important;
    box-shadow: 0 10px 24px rgba(0,0,0,.32), inset 0 1px 0 rgba(255,255,255,.10) !important;
    -webkit-backdrop-filter: blur(16px) saturate(1.25) !important;
    backdrop-filter: blur(16px) saturate(1.25) !important;
    touch-action: manipulation !important;
    -webkit-tap-highlight-color: transparent !important;
    cursor: pointer !important;
    z-index: 10090 !important;
  }

  .nav-hamburger:active { transform: scale(.96) !important; }

  body.btd-mobile-menu-open .nav-hamburger,
  html.btd-mobile-menu-open .nav-hamburger,
  body:has(#nav-mobile-menu.open) .nav-hamburger,
  .nav-hamburger.is-open {
    background: linear-gradient(180deg, rgba(245,241,234,.18), rgba(245,241,234,.075)) !important;
    border-color: rgba(245,241,234,.26) !important;
    box-shadow: 0 12px 30px rgba(0,0,0,.48), 0 0 0 1px rgba(232,87,74,.18), inset 0 1px 0 rgba(255,255,255,.17) !important;
  }

  .nav-hamburger span {
    display: block !important;
    width: 24px !important;
    height: 2px !important;
    border-radius: 999px !important;
    background: linear-gradient(90deg, rgba(245,241,234,.62), #fffaf2) !important;
    box-shadow: 0 0 10px rgba(245,241,234,.12) !important;
    pointer-events: none !important;
    transform-origin: center !important;
    transition: transform .18s ease, opacity .18s ease !important;
  }

  body.btd-mobile-menu-open .nav-hamburger span:nth-child(1),
  html.btd-mobile-menu-open .nav-hamburger span:nth-child(1),
  body:has(#nav-mobile-menu.open) .nav-hamburger span:nth-child(1),
  .nav-hamburger.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg) !important; }

  body.btd-mobile-menu-open .nav-hamburger span:nth-child(2),
  html.btd-mobile-menu-open .nav-hamburger span:nth-child(2),
  body:has(#nav-mobile-menu.open) .nav-hamburger span:nth-child(2),
  .nav-hamburger.is-open span:nth-child(2) { opacity: 0 !important; transform: scaleX(.45) !important; }

  body.btd-mobile-menu-open .nav-hamburger span:nth-child(3),
  html.btd-mobile-menu-open .nav-hamburger span:nth-child(3),
  body:has(#nav-mobile-menu.open) .nav-hamburger span:nth-child(3),
  .nav-hamburger.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg) !important; }

  #nav-mobile-menu.nav-mobile-menu {
    display: none !important;
    position: fixed !important;
    top: calc(68px + env(safe-area-inset-top, 0px)) !important;
    left: 10px !important;
    right: 10px !important;
    bottom: max(10px, env(safe-area-inset-bottom, 10px)) !important;
    height: auto !important;
    max-height: none !important;
    width: auto !important;
    padding: 30px 22px 96px !important;
    border-radius: 28px 28px 18px 18px !important;
    background: radial-gradient(circle at 84% 0%, rgba(245,241,234,.08), transparent 28%), linear-gradient(180deg, #151310 0%, #0b0a09 42%, #070706 100%) !important;
    border: 1px solid rgba(245,241,234,.12) !important;
    border-top-color: rgba(232,87,74,.38) !important;
    box-shadow: 0 -1px 0 rgba(245,241,234,.06) inset, 0 24px 80px rgba(0,0,0,.58), 0 0 0 1px rgba(0,0,0,.36) !important;
    -webkit-backdrop-filter: blur(24px) saturate(1.12) !important;
    backdrop-filter: blur(24px) saturate(1.12) !important;
    overflow-x: hidden !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch !important;
    overscroll-behavior: contain !important;
    z-index: 10080 !important;
  }

  #nav-mobile-menu.nav-mobile-menu.open {
    display: flex !important;
    animation: btdMobileMenuLift .2s cubic-bezier(.2,.8,.2,1) both !important;
  }

  #nav-mobile-menu.nav-mobile-menu::before {
    content: "";
    position: absolute;
    top: 10px;
    left: 50%;
    width: 42px;
    height: 4px;
    border-radius: 999px;
    background: rgba(245,241,234,.18);
    transform: translateX(-50%);
  }

  #nav-mobile-menu .nav-mobile-close {
    position: absolute !important;
    top: 14px !important;
    right: 14px !important;
    width: 46px !important;
    height: 46px !important;
    z-index: 10095 !important;
  }

  #nav-mobile-menu .nav-mobile-cta-row { margin-top: 34px !important; }
}

@keyframes btdMobileMenuLift {
  from { opacity: 0; transform: translateY(-8px) scale(.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}